Multimedia3
Book3Unit5派生词
10．mix vt. & vi.混合；调配→mixture n．混合(物)； 混合状态 11．confirm vt.证实；证明；批准→ confirmation n. 确认；证实；证明 12 ． wealthy adj. & n ． 富 有 的 ； 富 人 ； 有 钱 人 →wealth n．财富 13．distance n．距离；远方→distant adj.远的，远
1．culture n. 文化，文明→ cultural adj. 文化的；教养的
multicultural adj. 多种文化的multimedia n. 多媒体adj. 多媒体的
2． Canada n. 加拿大 → Canadian adj. 加拿大（人）的 n. 加拿大人 3．scenery n．景色；风景→ scene n. 场面；景象→ scenic adj. 风景优美的 4．eastward adv. & adj.向东；向东的→westward adv. & adj.(反
方的
14．tradition n．传统；风俗→traditional adj.传统的
15．terrify vt.使恐怖；恐吓→terrifying adj.令人畏惧
的 → terrified adj. 感 到 畏 惧 的 → terror n ． 恐 惧
→terr please int. 请；vt. 使喜欢；使高兴→ pleased adj.
义词)向西，向西的southward向南；向南的→ northward向北；
向北的
5. upward adj. 向上的；上升的；adv. 向上downward adj. 向下 的，下降的adv. 向下
6 ． surround vt. & vi. 包围；围绕 → surroundings n．(复)周围的事物；环境→surrounding adj.周围 的
a survey on multimedia large language model
a survey on multimedia large language
model
尊敬的受访者，
欢迎您参加我们关于多媒体大型语言模型的调查。
我们希望了解您对该技术的看法和使用情况。
请在下面回答以下问题。
请注意，我们将严格保护您的隐私，并将针对调查结果进行统一分析。
1. 您对多媒体大型语言模型的了解程度如何？
A. 完全不了解
B. 了解一些基本概念
C. 略有了解
D. 掌握较为深入的知识
E. 非常熟悉
2. 您认为多媒体大型语言模型在哪些领域可以发挥重要作用？（可多选）
A. 文字生成（例如自动摘要、文章创作）
B. 智能对话系统
C. 机器翻译
D. 信息检索与推荐
E. 语音合成
F. 视频字幕生成
G. 图像描述生成
H. 其他（请注明）
3. 您是否已经使用过多媒体大型语言模型？如果是，请简要描述一下您的体验。
4. 您认为多媒体大型语言模型的优势是什么？
5. 您对多媒体大型语言模型存在的潜在风险和问题有何看法？
6. 您认为有哪些措施可以减轻多媒体大型语言模型带来的潜在
风险？
7. 您对多媒体大型语言模型在未来的发展前景持何种看法？
8. 您是否愿意提供一些基本信息，以便我们进行统计分析？（选填）
A. 年龄：
B. 性别：
C. 教育背景：
D. 职业：
非常感谢您抽出宝贵时间参与调查。
您的意见对我们的研究非常重要。
如有任何疑问，请随时与我们联系。
3篇关于《多媒体教学的好处》的英语六级作文
(一)篇一：The Benefits of Multimedia Teaching in EducationMultimedia teaching, which integrates various media such as text, images, audio, and video, brings numerous benefits to education. First and foremost, multimedia teaching caters to different learning styles, as it provides visual, auditory, and interactive materials to engage students. This diverse approach can enhance students’ understanding and retention of complex information.Moreover, multimedia teaching facilitates a more dynamic and interactive learning environment. Through multimedia, students can access a wide array of resources, including virtual simulations, educational games, and interactive exercises, which not only make learning more enjoyable and engaging, but also offer opportunities for students to apply and test their knowledge in practical settings.Furthermore, multimedia teaching fosters the development of critical thinking and digital literacy skills. Access to diverse media encourages students to evaluate and analyze information from different perspectives, while also honing their abilities to navigate and utilize digital tools effectively. These are invaluable skills for the 21st century, preparing students for success in the digital age.In conclusion, multimedia teaching offers a holistic and adaptive approach to education, catering to diverse learning styles, fostering interactive learning environments, and promoting critical thinking and digital literacy. With its numerous benefits, it is clear that multimedia teaching plays a vital role in shaping the future of education.(二)篇二：Enhancing Learning Through Multimedia TeachingThe utilization of multimedia in education has revolutionized the learning process, offering a multitude of benefits to both students and educators. One of the key advantages of multimedia teaching is its ability to enhance comprehension and retention of information. By engaging students through visual, auditory, and interactive materials, multimedia teaching accommodates different learning styles, thereby improving students’ understanding of complex concepts.Furthermore, multimedia teaching encourages active participation and engagement. Interactive multimedia resources, such as educational videos, simulations, and online exercises, enable students to take an active role in their own learning process. This not only fosters a deeper understanding of the subject matter, but also promotes the development of critical thinking and problem-solving skills.Additionally, multimedia teaching promotes inclusivity and accessibility in education. Through the use of diverse media formats, educators can tailor their teaching to accommodate students with various learning needs and abilities, ensuring that all students have equal opportunities to learn and succeed.In summary, multimedia teaching offers an effective and inclusive approach to education, enhancing comprehension, fostering active engagement, and promoting inclusivity. It has undoubtedly transformed the landscape of education, paving the way for a more interactive, adaptive, and accessible learning experience.(三)篇三：The Advantages of Multimedia Teaching in Modern EducationIn the contemporary educational landscape, the integration of multimedia has proven to be a game-changer, offering a host of benefits for both students and teachers. One of the primary advantages of multimedia teaching is its ability to cater to diverse learning styles. By incorporating visual, auditory, and interactive elements, multimedia teaching provides a more holistic and engaging learning experience, catering to the individual needs and preferences of students.Furthermore, multimedia teaching fosters creativity and critical thinking. Through the use of multimedia, students are encouraged to explore and analyze information from various sources, developing their ability to think critically and make informed decisions. Additionally, multimedia platforms provide students with opportunities for creative expression, as they can utilize different media formats to present their ideas and projects.Moreover, multimedia teaching facilitates better information retention and understanding. Studies have shown that the use of multimedia in education can significantly improve students’ retention of information, as visual and auditory stimuli can enhance memory and cognitive processes, leading to deeper understanding of the subject matter.In conclusion, multimedia teaching offers a dynamic and inclusive approach to education, catering to diverse learning styles, fostering creativity and critical thinking, and enhancing information retention. With these advantages, multimedia teaching has become an indispensable tool for modern education.。
新概念英语第三册笔记第51课上课教案
Lesson 51 predicting the future一、单词讲解New words and expressionsnotorious [nəʊˈtɔːriəs] adj. （尤指因坏事）众所周知的famous for something （声名狼藉，臭名昭著）a notorious bandit 出了名的, 众人皆知的，臭名远扬的, 声名狼藉的eg. The region is notorious for its terrible snowstorms. 这个地区以大风雪闻名。
notorious 指因劣迹而臭名昭著，含强烈贬义；但有时也作“众所周知的”解。
这组词都有“著名的，知名的”的意思，其区别是：famous 是普通用词，指传播很广，引起人们注意的人或事物。
eminent 指在某方面杰出卓越或突出的人或物。
notable 用于指事件时，侧重其重要、值得注意；用于指人时，与famous同义，但语气较弱。
outstanding 侧重指因素质优良，功绩卓著而超过同类的人或物，强调“突出”。
well-known adj.众所周知的（强调众所周知的），但是仅只好的方面-- She is well-known in the musical world. / This is well-known fact.remarkable adj.不寻常的（包括褒义和客观）（同意词：unusual, uncommon, extraordinary）-- a remarkable event , an extraordinary event 不同寻常的事件unremarkable remarkably remark vt 谈到、说起（正式评论、谈论on/upon）n. 评论、意见about outstanding（adj.突出的，杰出的，卓越的）-- Our headmaster is an outstanding youth.（n.年轻人, 青少年）Distinguished（adj. 杰出的, 卓越的, 不同非凡的）(非常成功且令人钦佩的) ~ physicist [‘fɪzɪsɪst] Eminent（adj. 显赫的, 杰出的, 有名的, 优良的）[‘emɪnənt] (尤指在某一行业、专业领域中颇有名气的) Distinguished和eminent是同义词（都是用来修饰严肃领域的人）-- a distinguished physicist（n.物理学家）, an eminent surgeon（n.外科医生）famous adj.著名的（普通用词，可用于人或物，指声名广为人知且持续很久的，名气大，有名）-- He is a famous movie star. / Luxun is famous for his articles.flagrant [ˈfleɪɡrənt] adj. 公然的，明目张胆的八级very shocking because it is done in a way that is easily noticed and shows no respect 公然的，恬不知耻的flagrant cheating 公然欺骗flagrant abuse 公开侮辱flagrant violation 公然践踏full-time a. 专职的（a&ad全职的(工作、学习)，专职的；全日制的；全部时间的）full-time job 专职工作，全天工作full-time student 全日制学生；全职学生，脱产学生part-time a&ad 部分时间的; 兼职的technician n 技师（n.技术员，技术人员someone whose job involves skilled practical work with scientific equipment,；技巧纯熟的人is very good at the detailed technical aspects of an activity）maintenance technician 修理行业的技术人员laboratory technician 化验员；实验室技师lab technician 实验室技术员；实验技师engineering technician 工程技术员computer technician 计算机技术人员“某种职业、地位或特征的人”civilian n. 平民civil 公民的comedian n. 喜剧演员comedy 喜剧mathematician数学家electrician n. 电工historian n. 历史学家politician n. 政客表形容词，“…国的；…地方的，某人的或某宗教的”Arabian adj. 阿拉伯（人）的Arab 阿拉伯人Canadian adj. 加拿大（人）的Egyptian adj. 埃及（人）的Christian adj. 基督教（徒）的technique 多指具体的某种技术和技巧。
计算机专业英语chapter
Abbreviations : MIDI (Musical Instrument Digital Interface) 乐器数字接口
12-2 ELEMENTS OF MULTIMEDIA
We break the word multimedia into its component parts, we get multi -meaning more than one ,and media-meaning form of communication. Those types of media include: . Text . Audio Sound . Static Graphics Images . Animation . Full-Motion Video 如果我们把multimedia这个词分开，我们便得到multi——多，和media——媒体。媒体类型包括： · 文本 · 声音 · 静态图像 · 动画 · 动态视频 Logical Structures. Identifying these logical relationships is a job of the data administrator. A data definition language is used for this purpose. The DBMS may then employ one of the following logical structuring techniques during storage access, and retrieval operations [1]: 逻辑结构。确定这些逻辑关系是数据管理者的任务，由数据定义语言完成。DBMS在存储、访问和检索操作过程中可选用以下逻辑构造技术:
多媒体教育类外文文献参考
多媒体教育类外文文献参考在现代教育中，多媒体教学已经成为一个不可或缺的重要组成部分。
本篇文章将对一些有代表性的关于多媒体教育的外文文献进行综述解析，以此为读者提供一些参考。
1. Multimodal interaction in digital educational games (多模式数字教育游戏中的互动)本文主要研究数字教育游戏中多模式互动对于学习效果的影响。
在数字教育游戏中，玩家可以使用多种输入方式，如触摸屏、手柄、键盘等。
研究表明，使用不同的互动方式可以提高学生认知和记忆能力，同时也可以增强游戏体验和娱乐性。
这对教育游戏的开发和设计有着重要的参考价值。
2. Integrating multimedia technology into classroominstruction (将多媒体技术融入课堂教学)随着多媒体技术的发展，将其应用于课堂教学中已成为一种流行趋势。
本文综述了多媒体技术在教育领域中的应用，包括学科教学、语言教学和跨文化教学等方面。
研究表明，多媒体技术可以提高学生学习兴趣和参与度，增强信息传达的效果，同时也能够加速知识的获取和消化，提高知识的深度和广度。
3. The use of multimedia in online education (网络教育中的多媒体应用)随着知识产业的快速发展和互联网技术的普及，网络教育已成为一种受欢迎的学习方式。
本文主要探讨了多媒体技术在网络教育中的应用。
运用多媒体技术，教师可以通过图像、声音、视频等形式进行教学。
这种方式不仅可以提高学生的兴趣和参与度，还可以增加知识的交流和共享，促进学生之间的互动和交流。
4. The impact of multimedia technology on teaching and learning (多媒体技术对教学和学习的影响)本文综述了多媒体技术在教学和学习中的影响。
多媒体技术为学生提供了更丰富和有趣的学习体验，增强了他们的兴趣和参与度。
《计算机基础》第3章
3.5 多媒体动画技术
➢ 动画则是采用计算机动画设计软件创作 由若干幅图像进行连续播放而式 SWF格式
➢常用动画编辑软件 Ulead GIFAnimator Flash 3D Studio Max Maya
电视是多媒体吗？
3.1.3 媒体主要元素
➢文本 ➢图形和图像 ➢声音 ➢视频 ➢动画
3.2.1 位图与矢量图
➢图形或矢量图
图形是指用计算机绘图软件绘制的从点、 线、面到三维空间的各种有规则的图形。如 直线、矩形、圆、多边形以及其他可用角度、 坐标和距离来表示的几何图形。
图像或位图
这里所指的是静止图像。图像可 以从现实世界中捕获，也可以利用计 算机产生数字化图像。图像是由单位 像素组成的位图来描述的，每个像素 点都用二进制数编码，用来反映像素 点的颜色和亮度。
3.4 多媒体视频处理技术
➢ 视频是指从摄像机、录像机、影碟机以 及电视接收机等影像输出设备得到的连续 活动图像信号，即若干有联系的图像数据 连续播放便形成了视频 。 电视主要有3大制式，即NTSC(525/60)、 PAL(625/50)、SECAM(625/50)
3.4.1 视频的分类和特点
➢GIF格式
对图像数据进行无损压缩,特点是定义了允许用户为图像设置背景的透明 (transparency)属性,并且能够在文件中存储若干幅彩色图形或图像,可以像放 映幻灯片那样显示从而呈现动画效果
➢PNG格式
压缩比高于GIF，支持图像透明，可以利用Alpha通道调节图像的透明度
➢PSD格式
存储了 Photoshop中的图层、通道、参考线及颜色模式等信息
计算机基础
第3章 多媒体基础知识
主要内容
3.1 多媒体基本知识 3.2 多媒体图像处理技术 3.3 多媒体音频处理技术 3.4 多媒体视频处理技术
topic3
Corporate Intranets
• Purposes - internal business support • Skills emphasis - information architecture; integration with corporate systems; maintainability • Issues - setting and maintaining standards/templates, etc; links to business systems • Case studies - Monash university(!); • Status/comments - very important and becoming more so; less multimedia focus and more e-business
Information Services
• Purposes - disseminate information on-line or via information kiosks; useful to government agencies, public interest groups, etc • Skills emphasis - information architecture; design look and feel; interactivity • Issues - supporting multiple audiences; maintainability • Case studies - .au; ; .au • Status/comments - dominated by ‘unofficial’ groups at present; could/should become very important
星技FCREADMICRO3 USB3.0多媒体卡读写器（SDHC MicroSD产品ID）说明书
USB 3.0 External Flash Multi Media Memory Card Reader - SDHC MicroSDProduct ID: FCREADMICRO3The FCREADMICRO3 USB 3.0 Multi-media Card Reader offers quick access to the most popular flash card formats, from any computer with a USB port (optimal performance with 3.0, backward compatible with USB 2.0).Suitable for quickly accessing memory cards of virtually any portable media device (e.g. digital cameras, MP3 players, etc.), this versatile media card reader supports the most popular card types, including:•Secure Digital (SD)•Multi-Media Card (MMC)•Mini-SD, Micro-SD/SDHC (T-flash)•SDHC•SDXC•RS-MMC•Mobile-MMC and MMC-micro•Memory Stick (MS)•Memory Stick PRO (MS-PRO)•MS DuoMS-PRO Duo•MS-PRO Duo•Memory Stick XC•Micro-MS (M2)•MSPRO-HG Duo 8-bit mode.An ideal Laptop or Desktop accessory, this pocket-sized memory card reader is lightweight, portable, and backed by a 2-year warranty with free lifetime technical support.Certifications, Reports and Compatibility Applications•Mobile users/travelers who need a compact and lightweight cardreader small enough to fit in a pocket•Photographers who need to regularly transfer files from their camera memory card to a computer•Transferring files to and from a variety of portable devices, each using a different memory card formatFeatures•High Speed USB 3.0 host interface with support for transfer rates upto 5 Gbps•Support for Secure Digital (SD), MultiMedia Card (MMC), Mini-SD,Micro-SD/SDHC (T-flash), SDHC, SDXC, RS-MMC, Mobile-MMC andMMC-micro, Memory Stick (MS), Memory Stick PRO (MS-PRO), MSDuo, MS-PRO Duo, Memory Stick XC, Micro-MS (M2), and MSPRO-HGDuo 8-bit mode•Ultra-compact and lightweight design•Powered directly from the USB port•Plug-and-Play and Hot-Swap compatibleWarranty 2 YearsHardware Bus Type USB 3.0Chipset ID Realtek - RTS5307Interface USB 3.0Performance Maximum Data Transfer Rate 5 Gbit/sMemory Media Type HS-MMC, HC-MMC (High Speed/High Capacity MultimediaCard)M2 (Memory Stick Micro)Memory StickmicroSDHC (Micro Secure Digital High Capacity)MS Duo, MS Pro Duo, MS Pro-HG DuoMS Micro (Memory Stick Micro)MSXC (Memory Stick eXtended Capacity)Multi Media CardRS-MMC (Reduced Size Multimedia Card)SD/MMC (Secure Digital/Multimedia Card)SDHC (Secure Digital High Capacity)SDXC (Secure Digital eXtended Capacity)Connector(s)Connector Type(s) 1 - USB Type-A (9 pin) USB 3.0 MaleExternal Ports 1 - Memory Stick / Memory Stick Pro Slot Female1 - MicroSD Female1 - SD / MMC Slot FemaleSoftware OS Compatibility OS independent; No software or drivers requiredPower Power Source USB-PoweredEnvironmental Humidity< 80% R.H.Operating Temperature0°C to 40°C (32°F to 104°F)Storage Temperature-20°C to 60°C (-4°F to 140°F)Color BlackPhysicalCharacteristicsMaterial PlasticProduct Height0.6 in [1.5 cm]Product Length 2.8 in [72 mm]Product Width0.9 in [23 mm]Weight of Product0.5 oz [15 g]Package Height 1.3 in [32 mm]PackagingInformationPackage Length 6.9 in [17.5 cm]Package Width 5.6 in [14.2 cm]Shipping (Package) Weight 3.7 oz [104 g]What's in the Box Included in Package 1 - USB 3.0 Multi Media Memory Card Reader Adapter1 - Instruction ManualProduct appearance and specifications are subject to change without notice.。
英语综合教程3答案
英语综合教程3答案《英语综合教程3》是一本英语教材，用于初级英语学习者。
对于这本教材的答案，由于篇幅较大，无法一一列举。
以下是一些可能包含在这本教材的练习题中的答案及解析。
单项选择题：1. A: Have you finished your homework?B: Yes, ______.A. I amB. I doC. I haveD. I did答案：C选项正确，表示已经完成的动作或状态。
2. I didn't watch TV yesterday ______ I was busy preparing for exams.A. soB. butC. becauseD. or答案：C选项正确，表示因果关系。
完形填空：The school is my favorite place to go. It's a place full of energy and life. I go there to learn, to play and to meet my friends. My favorite part of the school is the library. It's a place where I can 1___ and explore different worlds through books.When I walk into the library, I'm 2__ by the shelves packed with books of different genres. I can always 3__ the newest novels and the most interesting magazines there. I usually spend hours 4__ books and reading quietly in a corner. The smell of the books and the sound of turning pages make me feel 5__.The librarian in our school is very friendly. She 6__ us in findingthe books we need and recommends new books to us. Sometimes, she 7__ interesting activities in the library, like book club meetings and storytelling sessions. I always look forward to these events as they bring the books to life.The library is a 8__ of knowledge, where I can find answers to any question I have. From history and geography to science and literature, everything is available 9__. The library not only helps me to improve my reading skills, but also broadens my horizons and expands my knowledge. Whenever I walk out of the library, I feel like I have gained 10__ and inspiration.1. A. relax B. sleep C. dream D. escape答案：A选项正确，表示通过阅读放松身心，享受阅读的乐趣。
诺瓦科技LED显示屏联网播放器T3规格书英文版
Taurus SeriesMultimedia PlayersT3 SpecificationsProduct Version: V1.3.0 Document Number:NS120100242XI 'AN NOVA ST A R TEC H C O .,L T D .Copyright © 2018 Xi’an NovaStar Tech Co., Ltd. All Rights Reserved.No part of this document may be copied, reproduced, extracted or transmitted in any form or by any means without the prior written consent of Xi’an Nova Star Tech Co., Ltd.Trademarkis a trademark of Xi’an NovaStar Tech Co., Ltd.StatementYou are welcome to use the product of Xi’an NovaStar Tech Co., Ltd. (hereinafter referred to as NovaStar). This document is intended to help you understand and use the product. For accuracy and reliability, NovaStar may make improvements and/or changes to this document at any time and without notice. If you experience any problems in use or have any suggestions, please contact us via contact info given in document. We will do our best to solve any issues, as well as evaluate and implement any suggestions.X I'A NN OV AS TA RT EC HC O.,L TD.Table of ContentsTable of Contents ............................................................................................................................ ii 1 Safety .. (1)1.1 Storage and Transport Safety ..................................................................................................................... 1 1.2 Installation and Use Safety .. (1)2 Overview (3)2.1 Introduction .................................................................................................................................................. 3 2.2 Application ................................................................................................................................................... 3 3 Features ........................................................................................................................................... 5 3.1 Synchronization mechanism for multi-screen playing ................................................................................. 5 3.2 Powerful Processing Capability ................................................................................................................... 5 3.3 Omnidirectional Control Plan .. (5)3.4 Dual-Wi-Fi Mode .......................................................................................................................................... 6 3.4.1 Wi-Fi AP Mode .......................................................................................................................................... 7 3.4.2 Wi-Fi Sta Mode .. (7)3.4.3 Wi-Fi AP+Sta Mode .................................................................................................................................. 7 3.5 Redundant Backup ...................................................................................................................................... 8 4 Hardware Structure....................................................................................................................... 9 4.1 Appearance . (9)4.2 Dimensions (11)5 Software Structure (12)5.1 System Software ........................................................................................................................................ 12 5.2 Related Configuration Software .. (12)6 Product Specifications ................................................................................................................ 13 7 Audio and Video Decoder Specifications (15)7.1 Image ......................................................................................................................................................... 15 7.1.1 Decoder .................................................................................................................................................. 15 7.1.2 Encoder .................................................................................................................................................. 15 7.2 Audio .......................................................................................................................................................... 16 7.2.1 Decoder .. (16)X I 'A N N O V A S T A R T E C H C O .,L T D.7.2.2 Encoder (16)7.3 Video (17)7.3.1 Decoder (17)7.3.2 Encoder (18)X I'A NN OV AS TA RT EC HC O.,L TD.1SafetyThis chapter illustrates Taurus series products safety to ensure storage, transportation, installation and usage safety of the products.Safety description is applicable to all personnel that contact or use the products. First, pay attention to following points:● Read throughout the description. ● Save the whole description.●Be complied with the whole description.1.1 Storage and Transport Safety ● Pay attention to dust and water prevention.● Avoid long-term direct sunlight. ● Do not place the products in the position near fire and heat.● Do not place the products in an area containing explosive materials. ● Do not place the products in strong electromagnetic environment. ● Place the products in a stable position to prevent damage or personal injury caused by dropping.●Save the packing box and materials which will come in handy if you ever have to ship your products. For maximum protection, repack your product as it wasoriginally packed at the factory.1.2 Installation and Use Safety● Only trained professionals may install the products.● Do not insert and unplug (power cord plug) when the power is on. ● Ensure the safe grounding of the device.● Be careful about electric shock risk. Built-in power supply. ● Always wear a wrist band and insulating gloves.● Do not place the products in an area having more or strong shake. ● Perform dust removing regularly.●Rather than having the product disassembled and maintained by non-certified professionals, please contact NovaStar for maintenance at any time.X I 'A N N O V A S T A R T E CHCO .,L T D.Replace faulty parts only with the spare parts supplied by NovaStar.X I'A NN OV AS TA RT EC HC O.,L TD.2Overview2.1 IntroductionTaurus series products are NovaStar's second generation of multimedia players dedicated to small and medium-sized full-color LED displays.T3 of the Taurus series products (herein after referred to as “T 3”) feature following advantages, better satisfying users’ requir ements:●Loading capacity up to 650,000 pixels●Synchronization mechanism for multi-screen playing● Powerful processing capability ● Omnidirectional control plan ● Dual-Wi-Fi mode ●Redundant backup Note: If the user has a high demand on synchronization, the time synchronization module isrecommended. For details, please consult our technical staff. In addition to solution publishing and screen control via PC, mobile phones and LAN, the omnidirectional control plan also supports remote centralized publishing and monitoring. 2.2 ApplicationTaurus series products can be widely used in LED commercial display field, such asbar screen, chain store screen, advertising machine, mirror screen, retail store screen, door head screen, on board screen and the screen requiring no PC. Classification of Taurus’ application cases is shown in Table 2-1. Table 2-1 ApplicationXI 'A N N O V A S T A R T E C H C O .,L T D.X I'A NN OV AS TA RT EC HC O.,L T3Features3.1 Synchronization mechanism for multi-screen playingThe T3 support switching on/off function of synchronous display.When synchronous display is enabled, the same content can be played on different displays synchronously if the time of different T3 units are synchronous with one another and the same solution is being played.3.2 Powerful Processing CapabilityThe T3 feature powerful hardware processing capability: ● 1.5 GHz eight-core processor●Support for H.265 4K high-definition video hardware decoding playback ● Support for 1080P video hardware decoding ● 2 GB operating memory●8 GB on-board internal storage space with 4 GB available for users 3.3 Omnidirectional Control Plan Table 3-1 Control PlanXI 'A N N O V A S T A R T E C H CO .,L T D.Cluster control plan is a new internet control plan featuring following advantages:●More efficient: Use the cloud service mode to process services through a uniformplatform. For example, VNNOX is used to edit and publish solutions, and NovaiCare is used to centrally monitor display status.● More reliable: Ensure the reliability based on active and standby disaster recovery mechanism and data backup mechanism of the server. ● More safe: Ensure the system safety through channel encryption, data fingerprintand permission management. ● Easier to use: VNNOX and NovaiCare can be accessed through Web. As long asthere is internet, operation can be performed anytime and anywhere. ●More effective: This mode is more suitable for the commercial mode of advertising industry and digital signage industry, and makes information spreading more effective. 3.4 Dual-Wi-Fi Mode The T3 have permanent Wi-Fi AP and support the Wi-Fi Sta mode, carryingadvantages as shown below:●Completely cover Wi-Fi connection scene. The T3 can be connected to through self-carried Wi-Fi AP or the external router.●Completely cover client terminals. Mobile phone, Pad and PC can be used to log in T3 through wireless network.●Require no wiring. Display management can be managed at any time, having improvements in efficiency.T3’s Wi -Fi AP signal strength is related to the transmit distance and environment. Users can change the Wi-Fi antenna as required.XI 'A NN O V A S T A R T E C H C O .,L T D3.4.1 Wi-Fi AP ModeUsers connect the Wi-Fi AP of a T3 to directly access the T3. The SSID is “AP + the last 8 digits of the SN ”, for example, “AP10000033”, and the default password is “12345678”.3.4.2 Wi-Fi Sta Mode Configure an external router for a T3 and users can access the T3 by connecting the external router. If an external router is configured for multiple T3 units, a LAN can becreated. Users can access any of the T3 via the LAN.3.4.3 Wi-Fi AP+Sta ModeIn Wi-Fi AP+ Sta connection mode, users can either directly access the T3 or accessinternet through bridging connection. Upon the cluster solution, VNNOX andNovaiCare can realize remote solution publishing and remote monitoring respectively through the Internet.XI 'A N N O V A S T A R T E C HCO .,L T D.3.5 Redundant BackupT3 support network redundant backup and Ethernet port redundant backup.●Network redundant backup: The T3 automatically selects internet connectionmode among wired network or Wi-Fi Sta network according to the priority.●Ethernet port redundant backup: The T3 enhances connection reliability throughactive and standby redundant mechanism for the Ethernet port used to connectwith the receiving card.X I'A NN OV AS TA RT EC HC O.,L TD.4Hardware Structure4.1 AppearanceFigure 4-1 Appearance of T3Note: Product images provided in this file are for reference only, and the actualproducts shall prevail.Table 4-1 Connectors and buttons of the T3XI 'AN NOVA S TAR T E C HCO .,L T D.Note: Product images provided in this file are for reference only, and the actual products shall prevail.Table 4-2 Indicators of the T3 A R T E C HCO .,L T D.4.2 DimensionsThe total thickness (board thickness + thickness of the components on the front andback side) is no greater than 25.0mm.Unit of the dimension chart is “mm”. Ground connection is enabled for location hole(GND).X I'A NN OV AS TA RT EC HC O.,L TD.5Software Structure5.1 System Software● Android operating system software ● Android terminal application software ●FPGA programNote: The third-party applications are not supported.5.2 Related Configuration SoftwareTable 5-1 Related configuration softwareE C HCO .,L T D.6 Product Specifications SpecificationsAntennaAntenna extension mastX I'A NN OV AS TA RT EC HC O.,L TD.7Audio and Video DecoderSpecifications7.1 Image7.1.1 Decoder7.1.2 EncoderO .,L T D.7.2 Audio 7.2.1 Decoder7.2.2 Encoder7.3 Video 7.3.1 DecoderNote: Output data format is YUV420 semi-planar, and YUV400(monochrome) is also supported for H.264.7.3.2 EncoderXI 'AN NOVA S。
多媒体课件名词解释
多媒体课件名词解释多媒体课件名词解释随着科技的不断进步和教育的不断发展，多媒体课件已经成为现代教育中不可或缺的一部分。
它是一种结合了文字、图片、音频和视频等多种媒体元素的教学工具，旨在提高学习效果和学生的参与度。
在本文中，我们将对多媒体课件中的一些关键名词进行解释，以帮助读者更好地理解其含义和应用。
1. 多媒体（Multimedia）多媒体是指通过多种媒体元素（文字、图片、音频、视频等）来传达信息的技术形式。
它可以提供丰富的视觉、听觉和交互体验，使信息更生动、直观、易于理解。
多媒体技术已广泛应用于各个领域，包括教育、娱乐、广告等。
2. 课件（Courseware）课件是一种用于教学的电子化教材，它以电子文档的形式呈现，包含了教学内容的文字、图片、音频和视频等多种媒体元素。
课件可以通过计算机、平板电脑、投影仪等设备进行展示，使教学更加灵活、生动。
3. 交互性（Interactivity）交互性是指多媒体课件与学生之间的相互作用。
通过交互式设计，学生可以主动参与到课件中，与其进行互动、探索和实践，从而更好地理解和掌握所学知识。
交互性可以通过点击、拖拽、填空等方式实现，提高学习的趣味性和效果。
4. 视觉呈现（Visual Presentation）视觉呈现是指多媒体课件中运用图片、图表、动画等视觉元素来传达信息。
通过精心设计的视觉效果，可以吸引学生的注意力，激发他们的学习兴趣，并帮助他们更好地理解和记忆所学内容。
视觉呈现的方式可以多样化，根据教学目标和内容进行选择。
5. 听觉呈现（Audio Presentation）听觉呈现是指多媒体课件中运用音频元素来传达信息。
通过配音、背景音乐、音效等方式，可以增强学习的氛围和情感色彩，提高学生对于所学知识的理解和记忆。
音频呈现的质量和效果对于多媒体课件的成功与否至关重要。
6. 视频呈现（Video Presentation）视频呈现是指多媒体课件中运用视频元素来传达信息。
Multimedia Systems：多媒体系统
CS-502 Operating Systems
CS502 Spring 2006
Multimedia Systems 1
Outline
• Requirements and challenges for audio and video in computer systems
– Okay for a modern PC – Not okay for 56 kb/sec modem (speed) or iPod (space)!
• MP-3 0.14 mbits/sec (10:1)
– Same audio quality! – Compression ratio varies with type of music
– Webcams, Skype, …
• Video on demand
– Pause, fast forward, reverse, etc.
• Interactive meetings
– Presentations with 2-way audio – Teleconferencing
• Interactive gaming •…
memory bus
Device
audio stream
CD-ROM drive
Sound card
• Separate data path for audio stream
• Main system bus and CPU were too busy/slow to handle real-time audio
CS502 Spring 2006
Multimedia Systems 2
新标准大学英语视听说教程3全版答案
新标准大学英语视听说教程3全版答案Unit 1Part I1. b) To explore the rich history and culture of the town.2. c) It is located near a popular National Park.3. a) Being exposed to a diverse range of music.4. b) Encourage students to express their own opinions.5. c) Enhancing the overall learning experience.6. b) Enhancing students' listening skills in real-life situations.7. c) To improve your listening and speaking skills in the shortest time possible.8. a) Enhance their overall language proficiency.9. b) Practice listening and speaking skills through interactive exercises.10. c) Students will be provided with more opportunities to practice listening and speaking.Part IISection A11. B. They find it more accessible and convenient.12. C. They can manage their own time and schedule effectively.13. C. It provides various resources for different subjects.14. B. To offer widespread access to educational materials.15. A. Some students struggle to adjust to the independence and self-discipline required.16. C. Online courses offer a flexible learning environment.17. B. Students need to be self-motivated to succeed in online courses.18. A. It allows students to learn at their own pace.19. C. The tutor is responsible for guiding and assisting students throughout the course.20. B. Online courses provide a range of multimedia resources for different learning styles.Section B21. C. By creating interactive and engaging learning materials.22. A. To make learning more enjoyable and effective.23. B. They allow students to visualize abstract concepts and ideas.24. D. By incorporating educational games and simulations.25. A. Online platforms provide a space for collaborative learning.26. B. Technology enhances the learning experience for students.27. C. It provides students with immediate feedback on their progress.28. D. By offering personalized learning pathways for each student.29. A. Multimedia resources improve students' retention and understanding of content.30. B. By incorporating real-life examples and case studies into the curriculum.Section C31. B. It allows students to develop social and emotional skills.32. C. By providing opportunities for teamwork and cooperation.33. D. It promotes a sense of belonging and community among students.34. A. Extracurricular activities help students develop leadership skills.35. C. It encourages students to explore their interests and passions.36. B. By organizing cultural exchange programs and events.37. D. Extracurricular activities provide a break from academic pressures.38. A. It helps students develop time management and organizational skills.39. C. By providing opportunities for students to take on responsibilities.40. B. Extracurricular activities contribute to the holistic development of students.Unit 2Part I1. B. They facilitate effective communication between team members.2. A. To ensure everyone understands their responsibilities and tasks.3. C. It helps prevent misunderstandings and conflicts within the team.4. A. By setting clear expectations and goals for the team.5. B. It encourages open and honest communication among team members.6. C. To promote collaboration and mutual support within the team.7. B. Teams are more likely to achieve their goals when members trust and support each other.8. C. They allow teams to reflect on their performance and make necessary improvements.9. A. By recognizing individual contributions and achievements.10. B. Feedback should focus on both positive aspects and areas for improvement.Part IISection A11. B. It allows individuals to express themselves freely.12. C. It encourages divergent thinking and creativity.13. A. The fear of being criticized or judged by others.14. B. To explore new ideas and possibilities.15. C. It promotes a positive and inclusive learning environment.16. B. It can hinder personal and professional growth.17. A. By providing constructive feedback and support.18. C. They can provide valuable insights and perspectives.19. B. It contributes to the overall success and innovation of a group.20. A. By fostering a culture of open-mindedness and respect.Section B21. B. Empathy plays a crucial role in developing strong interpersonal relationships.22. A. To better understand and connect with others.23. C. It helps individuals navigate conflicts and resolve issues effectively.24. B. Empathy enhances communication and collaboration within a team.25. A. It allows individuals to consider different perspectives and viewpoints.26. C. They can better support and assist those in need.27. B. Empathy promotes a sense of belonging and community.28. A. By actively listening and showing genuine interest in others.29. C. It involves putting oneself in another person's shoes.30. B. Empathy can be developed and nurtured through practice and reflection.Section C31. C. Effective communication is vital for building and maintaining relationships.32. B. It helps individuals express their thoughts, ideas, and emotions.33. D. It ensures that messages are accurately understood and interpreted.34. A. By practicing active listening and paying attention to non-verbal cues.35. B. Effective communication fosters trust and mutual respect.36. C. It promotes positive interactions and reduces conflicts.37. D. Feedback should be specific, constructive, and non-judgmental.38. A. It is important to choose the appropriate medium for communication.39. C. By asking open-ended questions and encouraging dialogue.40. B. Effective communication requires both speaking and listening skills.Unit 3Part I1. B. To provide an overview of the topics that will be covered in the lecture.2. A. To introduce the main focus or argument of the lecture.3. C. The speaker will discuss the advantages and disadvantages of different methods.4. B. To explain the reasons behind a particular phenomenon or event.5. A. The speaker will analyze a historical event or period in detail.6. B. To discuss the implications and potential solutions to a problem.7. C. The speaker will provide examples to support their main points.8. A. To emphasize the importance or significance of a particular concept.9. B. To describe a process or step-by-step procedure.10. A. The speaker will compare and contrast different theories or viewpoints.Part IISection A11. B. It promotes critical thinking and problem-solving skills.12. C. Inquiry-based learning encourages exploration and discovery.13. A. It allows students to apply knowledge in real-life situations.14. B. The flipped classroom model enhances student engagement and participation.15. A. It encourages students to take responsibility for their own learning.16. C. Active learning promotes deeper understanding and long-term retention of information.17. B. It fosters collaborative learning and teamwork among students.18. A. By providing opportunities for students to ask questions and seek clarification.19. C. It prepares students for the challenges of the modern workforce.20. B. The teacher's role shifts from being a lecturer to a facilitator and guide.Section B21. C. It allows students to learn at their own pace and style.22. A. Personalized learning caters to individual strengths and weaknesses.23. B. It promotes student ownership and autonomy in the learning process.24. D. By leveraging technology to tailor instruction to individual needs.25. A. Personalized learning provides immediate feedback on student progress.26. B. It encourages students to set their own learning goals and monitor their progress.27. C. It enables students to explore their own interests and passions.28. D. By offering a wide range of resources and learning materials.29. A. Personalized learning adapts to students' unique learning preferences.30. B. It fosters a positive and inclusive learning environment.Section C31. B. It encourages students to think critically and creatively.32. C. By promoting problem-solving and analytical skills.33. D. Creative thinking allows individuals to generate innovative ideas and solutions.34. A. It fosters a sense of curiosity and exploration.35. C. Creative thinkers are more adaptable and resilient in the face of challenges.36. B. By encouraging brainstorming and divergent thinking.37. D. Creative thinking leads to new discoveries and breakthroughs.38. A. It helps individuals approach tasks and problems from different perspectives.39. C. By providing opportunities for self-expression and originality.40. B. Creative thinking is a valuable skill in both personal and professional contexts.Overall, the New Standard College English Listening, Speaking, and Pronunciation Course 3 provides comprehensive materials for students to enhance their language proficiency. The course covers various topics andsubjects, incorporating interactive exercises to practice listening and speaking skills. Additionally, the course emphasizes the importance of effective communication, critical thinking, and creativity, empowering students to become well-rounded individuals in both academic and professional settings.。
大学英语3 课后习题(附答案)
Unit 11) From her accent I guess she's from Northeast.2) It was very clever of her to turn his argument against himself.3) I found a couple of shoes under the bed but they don't make a pair.4) Dr. Bright always takes his time as he examines his patients and treats them with extreme care.5) British companies are trying to avoid the fate their American counterparts have already suffered.6) Wilfred's remarks confirmed me in my opinion that he was an honorable (诚实的)young man.7) The key witness for the prosecution(原告方) was offered police protection after she received death threats.8) I thought that was the end of the matter but subsequent events proved me wrong.9) Having practiced for so long, the New York baseball team stands a chance of winning the World Series(美国职业棒球大赛)this year.10) At the trial, Bob's teacher, who was called as a character witness, said he was a quiet boy who had never been in trouble before. Translation1.发言人（spokesman）明确表示总统在任何情况下都不会取消（cancel）这次旅行。
qt multimedia 使用方法
qt multimedia 使用方法Qt Multimedia 是Qt 框架中的一个模块，它提供了一套跨平台的多媒体功能，包括音频、视频、相机和摄像头等。
Qt Multimedia 的使用方法相对简单，本文将以一个简单的案例来介绍Qt Multimedia 的基本用法，并逐步讲解。
首先，我们需要创建一个新的Qt 项目。
打开Qt Creator，选择新建项目-> 应用程序-> Qt Widgets 应用程序，填写项目名称和存储位置后，点击下一步。
选择模板时，在左侧的列表中，找到Qt Multimedia 模块，在右侧的下拉框中选择基于Qt Widgets 应用程序的模板，点击下一步。
然后，根据需要进行项目设置，最后点击完成。
一旦项目创建完成，我们就可以开始使用Qt Multimedia 模块了。
首先，我们需要在项目文件（.pro）中添加对Qt Multimedia 模块的引用。
打开项目文件，找到`QT += core gui` 的行，在其后面添加`multimedia`，保存文件并重新构建项目。
接下来，我们将在主窗口类的头文件中添加一个`QMediaPlayer` 对象和相关的函数。
打开主窗口的头文件（通常是`mainwindow.h`），添加以下内容：cppinclude <QMediaPlayer>class MainWindow : public QMainWindow{Q_OBJECTpublic:MainWindow(QWidget *parent = nullptr);~MainWindow();private slots:void play();void pause();void stop();private:QMediaPlayer *player;};在上面的代码中，我们添加了一个`QMediaPlayer` 对象以及三个私有的槽函数`play()`、`pause()` 和`stop()`。
多媒体技术及应用英文
多媒体技术及应用英文Multimedia Technology and ApplicationsMultimedia technology refers to the use of various media elements such as text, graphics, audio, video, and animation to create interactive and engaging digital content. It encompasses the methods and tools used to create, manipulate, store, and transmit multimedia content.Applications of multimedia technology are widespread across industries and sectors. Here are a few examples:1. Entertainment: Multimedia technology is extensively used in the entertainment industry to create movies, TV shows, video games, and virtual reality experiences. It allows for the integration of various media elements to provide immersive and engaging experiences to the audience.2. Education: Multimedia technology has revolutionized education by providing interactive and visual learning experiences. It enables the creation of educational videos, interactive presentations, e-learning platforms, and simulation-based training.3. Advertising and Marketing: Multimedia technology is a powerful tool for creating compelling and memorable advertising campaigns. It allows for the integration of text, images, audio, and video to deliver impactful messages to the target audience.4. Communication and Collaboration: Multimedia technology plays a crucial role in communication and collaboration tools. Video conferencing, webinars, and online collaboration platforms utilize multimedia elements to facilitate effective communication and collaboration between individuals and teams.5. Healthcare: Multimedia technology is increasingly used in healthcare for medical imaging, patient education, telemedicine, and surgical simulations. It enables healthcare professionals to visualize and understand complex medical concepts and procedures more effectively.6. Journalism and Broadcasting: Multimedia technology has transformed journalism and broadcasting by enabling the creation of multimedia news stories, podcasts, and interactive news websites. It provides a more engaging and immersive way of delivering news and information to the audience.7. Art and Design: Multimedia technology has opened up new possibilities for artists and designers to create interactive and multimedia art installations, digital paintings, and multimedia performances. It allows for the integration of different artistic mediums to express ideas and emotions.These are just a few examples of how multimedia technology is applied in various industries and sectors. With advancements in technology, multimedia applications continue to evolve and expand, offering endless possibilities for creative expression and communication.。
PHILIPS MP3多媒体音响说明书
Multimedia Speakers Register your product and get support at/welcomeSPA7210R E N User manualMultimedia SpeakersW arning :1. The product shall not be exposed to dripping or splashing and that no objects fi lled with liquids, such as vases, shall be placed on the product. 2. T o completely disconnect the power input, the mains plug of the product shall be disconnected from the mains. 3. The mains plug of the product should not be obstructed OR should be easily accessed during intended use. 4. No naked fl ame sources, such as lighted candles, should be placed on the products.N ote :1. Ensure that the multimedia speaker is installed properly before using. 2. The maximum output voltage of headphone jack is equal or less than 150mV. 3. The USB socket is for charging 5V devices only. Installation: 1 Connect the audio cable to the audio output of your computer (Fig. 1). 2 Adjust the length of speaker cable by the cable winder at the bottom of the left speaker (Fig. 2). 3 Connect the power cable to the power adaptor (Fig. 3). 4 Connect the power adaptor cable to the 12V DC socket at the back of the right speaker and a AC power socket (Fig. 4). 5 T urn the volume knob clockwise to switch on the Multimedia Speakers (Fig. 5).T he indicator on the right speaker lights up.» 6 Adjust the volume either by the volume knob or by the computer application or multimedia application software (Fig. 6). T o listen through a headphone, •right speaker.T o play sound from a MP3, connect it to the • AUX IN socket on the right speaker.T he USB socket on the right speaker can be used to recharge a • USB rechargeable device (e.g. MP3, mobile phone, ect.) (Fig. 7).7After use,exit the multimedia application software and switch off the speakers.Y our product is designed and manufactured with highquality materials and components,which can be recycledand reused.Please inform yourself about the localseparate collection system for electrical and electronicproducts,including those marked by the crossed-outwheely bin symbol.Please act according to your localrules and do not dispose of your old products with your normal household waste.© Royal Philips Electronics N.V.2011All rights reserved.Specifications are subject to change without notice.Tr ademar ks are the property of Koninklijke Philips Electronics N.V.or their respective owners.SPA7210R_QSG_V1.0。
大学英语教材视听说3第四版
大学英语教材视听说3第四版With the advancement of technology, the way we learn languages has also evolved. In the field of English language teaching, the textbook titled "大学英语教材视听说3第四版" has emerged as a prominent resource for learners. This article delves into the features and benefits of this fourth edition.One of the key aspects that sets "大学英语教材视听说3第四版" apart is its focus on integrating listening, speaking, and visual components into the learning process. The textbook adopts a multimedia approach, providing students with ample opportunities to practice and enhance their language skills through audio and visual materials. By engaging learners in authentic conversations and real-life situations, the textbook creates an immersive learning experience.The fourth edition takes into account the diverse needs and interests of students. It offers a wide range of topics that reflect real-world scenarios, such as travel, culture, education, and technology. Each unit is carefully structured to cover essential language points and vocabulary related to the topic, ensuring that students acquire both practical language skills and a deeper understanding of the subject matter.To cater to different learning styles, "大学英语教材视听说3第四版" incorporates a variety of exercises and activities. These include comprehension questions, role-playing exercises, pair/group discussions, and pronunciation drills. The inclusion of these interactive elements encouragesstudents to actively participate in the learning process, fostering their ability to communicate confidently in English.Furthermore, the textbook embraces the concept of learner autonomy. It provides self-study materials and opportunities for learners to reflect on their learning progress. This enables students to take ownership of their language development, promoting independent learning and self-assessment skills.In addition to the textbook itself, "大学英语教材视听说3第四版" also offers an online platform with supplementary resources. Students can access audio and video recordings, additional practice exercises, and assessment tools to further enhance their learning experience. The online platform serves as a virtual classroom, enabling students to practice listening and speaking skills outside of physical classroom settings.The "大学英语教材视听说3第四版" textbook is widely recognized by English language educators for its comprehensive approach and adaptable nature. It serves as a valuable resource for both English language learners and teachers, providing them with the necessary tools to effectively improve their oral communication skills.In conclusion, "大学英语教材视听说3第四版" revolutionizes the way English is taught and learned in the academic setting. With its multimedia approach, student-centered activities, and online support, this textbook empowers learners to develop their language abilities in an engaging and self-directed manner. Whether used in a classroom or for self-study, "大学英语教材视听说3第四版" proves to be an invaluable asset for anyone striving to excel in English communication.。
全新版大学英语综合教程3
全新版大学英语综合教程3As one of the most widely used English textbooks in Chinese universities, the new edition of College English Integrated Course 3 is designed to help students improve their English language skills in reading, writing, listening, and speaking. This comprehensive course covers a wide range of topics and provides students with the necessary tools to succeed in their academic and professional careers.The new edition of College English Integrated Course 3 features updated content and a more interactive approach to learning. The textbook includes a variety of reading materials, such as articles, essays, and short stories, that are designed to engage students and improve their reading comprehension skills. In addition, the writing exercises in the textbook are carefully crafted to help students develop their writing skills and express their ideas effectively.One of the key features of the new edition of College English Integrated Course 3 is its focus on listening and speaking skills. The textbook includes a wide range of listening exercises, including dialogues, interviews, and lectures, that are designed to help students improve their listening comprehension and pronunciation. The speaking exercises in the textbook are also designed to help students develop their speaking skills and become more confident communicators.In addition to its focus on language skills, the new edition of College English Integrated Course 3 also includes a variety of cultural and cross-cultural communication topics. These topics are designed to help students develop a better understanding of different cultures and improve their ability to communicate effectively in a global context.The new edition of College English Integrated Course 3 also includes a variety of supplementary materials, such as online resources and multimedia content, that are designed to enhance the learning experience for students. These materials provide students with additional opportunities to practice their language skills and engage with the content in a more interactive and dynamic way.Overall, the new edition of College English Integrated Course 3 is a comprehensive and engaging textbook that is designed to help students improve their English language skills and succeed in their academic and professional careers. With its updated content, interactive approach to learning, and focus on language skills and cross-cultural communication, this textbook provides students with the necessary tools to become proficient English speakers and effective communicators in a global context.。
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Multimedia Databases
Oya Kalipsiz Yildiz Technical University, Computer Science Department Yildiz Istanbul, Turkey e-mail: kalipsiz@.tr
Abstract
1. Introduction
Multimedia concerns the presentation of mixed modes of information (text, data, image, audio, and video) as digital signals. Some of the multimedia applications are; home applications (home, shopping and information system vs.) - video conferencing - education (distance learning, Just-in-time training) - digital libraries - virtual reality - telemedicine. Multimedia communication is concerned with the technology required to manipulate, transmit and control these audio-visual signals across a networked communications channel [ 13. Multimedia systems need a delivery system to get the multimedia objects to the user. The first media used for distribution were magnetic and optical disks. Internet, as well as T C P / P protocol suite or Net BIOS on isolated or campus LANs, became the next vehicles for distribution. The rich text and graphics capabilities of the
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0-7695-0743-3/00$10.00 0 2000 EEE
This paper reviews: Multimedia data types and data compression Architecture, design and query in multimedia database system. Object oriented multimedia databases Multimedia data in World Wide Web
World Wide Web browsers are being augmented with animations, video and sound. The major technologies relevant to multimedia may be summarized as [ 2 ] : compression technology video servers (server structure- disk organization and scheduling- video file systems) networks(internet- tokenring- ethernet- switched ethernet- ATM) data transmission techniques cable systems authoring systems Database systems. A database is a collection of related data. A database management system (DBMS) is a general-purpose software system that facilitates the processes of defining; constructing and manipulating databases for various applications. Multimedia database contains different data types such as text, images, graphic objects, animation sequences, video and audio. The different data types might require special methods for optimal storage, access, indexing and retrieval. A multimedia database management system provides a suitable environment for using and managing multimedia database. A multimedia DBMS requires traditional DBMS capabilities - mand presentation information retrieval capabilities - huge capacity storage management - multimedia interface and interactivity multimedia query support. Normally, individual objects in an image or video frame have some spatial relationship between each other. These relationships produce some constraints when searching for objects in a database. Relational or object oriented data models have been proposed to cope with these constraints in the multimedia databases. An object oriented database management system is more suitable for developing multimedia applications.
2. Multimedia Data
Media is divided into two classes: continuous and discrete. Continuous media such as audio and video, change with time. Discrete media are time independent. Common examples of discrete media are text (formatted and unformatted), still images and graphics [ 13.
2.3 Data compression methods
Data compression can be defined as a means of reducing the size of blocks of data by removing unused and redundant material. Several types of redundancy can be exploited within compression methods: redundancy in scale - redundancy in frequency - temporal redundancy stereo redundancy - spatial redundancy. Some of coding techniques for multimedia systems is entropy, source and hybrid coding. Entropy is defined as the average information content of given data. It defines the minimum number of bits needed to represent the information content without information loss. Entropy coding tries to come as close as possible to this theoretical lower limit. Examples of entropy coding methods are runlength coding, Huffman coding and arithmetic coding. Source coding processes original data such that a distinction between relevant and irrelevant data is possible. Entropy coding is a lossless technique; source coding is often a lossy process. Hybrid coding such as JPEC, MPEC video, MPEC audio uses a combination of entropy coding and source coding techniques [ 11. The most video clips in multimedia databases and digital libraries will be stored in compressed formats like motion JPEG and MPEG. The manipulation, access and management of compressed data streams without full decompression is an area of active research 171.