发明授权
- 专利标题: Ghost canceling apparatus
- 专利标题(中): 鬼取消装置
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申请号: US316423申请日: 1981-10-29
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公开(公告)号: US4502077A公开(公告)日: 1985-02-26
- 发明人: Noriaki Morotomi , Takeshi Sato
- 申请人: Noriaki Morotomi , Takeshi Sato
- 申请人地址: JPX Osaka
- 专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人: Matsushita Electric Industrial Co., Ltd.
- 当前专利权人地址: JPX Osaka
- 优先权: JPX55-152917 19801029
- 主分类号: H03H15/00
- IPC分类号: H03H15/00 ; H03H21/00 ; H04B3/06 ; H04N5/21 ; H04B3/04
摘要:
A ghost canceling apparatus for effectively canceling ghosts in television signals and having a high capability for canceling ghosts in the frequency band in which the ghost canceling is required. The apparatus utilizes an error detector and a tap gain control in a closed loop to control the gain of a transversal filter. In addition, a frequency transfer characteristic modifier is utilized to modify the loop frequency transfer characteristics so as to optimize the cancelation of ghosts.
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