Processing device for video signals
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专利名称：Processing device for video signals
发明人：Mancuso, Massimo,Poluzzi, Rinaldo
申请号：EP96830099.6
申请日：19960307
公开号：EP0794512A1
公开日：
19970910
专利内容由知识产权出版社提供
专利附图：
摘要：A processing device for video signals comprising: a memory device (1) suitable to store discrete image elements of a video field; a filtering device (3) supplied by the memory device and suitable to recover errors introduced by the memory device. The filtering device (3) comprises: a filter (4) having an input supplied with digital signals
representative of values of a plurality of discrete image elements (P1...P8,X) comprising an image element (X) to be examined and neighbouring image elements (P1...P8), the discrete image elements being stored in the memory device (1), and an output supplying digital signals (CO) representative of a filtered value of the image element to be
examined (X); noise detector means (5) operating on fuzzy-logic rules having an input supplied with the digital signals representative of the plurality of values of the image elements (P1...P8,X) and an output supplying a weight signal (K) representative of a degree of erroneousness of the discrete image element to be examined (X), the noise detector circuit (5) determining the degree of erroneousness comparing the value of the image element to be examined (X) with the values of the neighbouring image elements (P1...P8); soft-switch means (7) having a first input supplied with the digital signals representative of the value of the image element to be examined (X), a second input supplied with the output (CO) of the filter (4), a third input supplied with the weight signal (K), and an output supplying digital signals (O) representative of a weighted average of the output of the filter (CO) and of the digital signals representative of the value of the image element to be examined (X) according to respective weights determined by the degree of erroneousness.
申请人：SGS-THOMSON MICROELECTRONICS s.r.l.
地址：Via C. Olivetti, 2 20041 Agrate Brianza (Milano) IT
国籍：IT
代理机构：Mittler, Enrico
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