Method for measuring the movement of an optical po
- 1、下载文档前请自行甄别文档内容的完整性，平台不提供额外的编辑、内容补充、找答案等附加服务。
- 2、"仅部分预览"的文档,不可在线预览部分如存在完整性等问题,可反馈申请退款(可完整预览的文档不适用该条件!)。
- 3、如文档侵犯您的权益，请联系客服反馈,我们会尽快为您处理(人工客服工作时间：9:00-18:30)。
专利名称：Method for measuring the movement of an
optical pointing device on a work surface
发明人：Milos Becvar,Nicolas Chauvin,Larry
Bieber,Kevin Buescher
申请号：US13451282
申请日：20120419
公开号：US08368381B1
公开日：
20130205
专利内容由知识产权出版社提供
专利附图：
摘要：It is described a method for measuring the movement of an optical pointing
device on a work surface, which includes a pixel photo-detector array to pick-up reflected
light on the work surface, a window comparator array receiving pixel voltages and providing comparison signals to a processing circuit. Light intensity between neighboring pixels is compared to determine edge direction data, which includes a positive edge for a first pixel voltage smaller than a second pixel voltage by more than a half of a window voltage, a no-edge, with the difference between the pixel voltages smaller than the half of the window voltage, and a negative edge, for which the first pixel voltage is greater than the second pixel voltage by more than the half of the window voltage. Two edge direction data from two successive flash are compared to determine the relative motion of the pointing device on the work surface.
申请人：Milos Becvar,Nicolas Chauvin,Larry Bieber,Kevin Buescher
地址：Colorado Springs CO US,Chexbres CH,Colorado Springs CO US,Colorado Springs CO US
国籍：US,CH,US,US
代理机构：Oblon, Spivak, McClelland, Maier & Neustadt, L.L.P.
更多信息请下载全文后查看。