发明公开
- 专利标题: Television signal filtering system
- 专利标题(中): 系统过滤电视信号。
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申请号: EP82302688.5申请日: 1982-05-25
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公开(公告)号: EP0065881A2公开(公告)日: 1982-12-01
- 发明人: Pritchard, Dalton Harold
- 申请人: RCA CORPORATION
- 申请人地址: 30 Rockefeller Plaza New York, NY 10020 US
- 专利权人: RCA CORPORATION
- 当前专利权人: RCA CORPORATION
- 当前专利权人地址: 30 Rockefeller Plaza New York, NY 10020 US
- 代理机构: Smith, Thomas Ian Macdonald (GB)
- 优先权: US267634 19810527
- 主分类号: H04N9/64
- IPC分类号: H04N9/64 ; H04N11/06 ; H03H15/00
摘要:
A signal separation system is provided which includes a plurality of serially-coupled signal transfer stages (102, 104, 106). A video information signal is applied to an input stage (102) and is delayed by at least the time interval of one horizontal television line (1-H) as it passes through the stages. Various ones of the stages which are 1-H apart in time include outputs, which are combined by weighting function (120-126) and summing or difference circuits (130-136) to produce bandwidth-limited transversal filter output signals. These signals are additively and subtractively combined (140, 150, 160, 156) to produce a combed band passed chrominance signal and a fully restored and combed luminance signal, thereby obviating the need for subsequent filtering before the signals are further processed. The bandwidth-limited signals may also be combined (162) to provide a user adjustable peaking control signal for the luminance information channel.
公开/授权文献
- EP0065881B1 Television signal filtering system 公开/授权日:1985-10-30
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