发明授权
US5210607A Ghost reduction device for removing ghost components of a television
signal
失效
用于去除电视信号的重影分量的减魂装置
- 专利标题: Ghost reduction device for removing ghost components of a television signal
- 专利标题(中): 用于去除电视信号的重影分量的减魂装置
-
申请号: US699917申请日: 1991-05-14
-
公开(公告)号: US5210607A公开(公告)日: 1993-05-11
- 发明人: Toshiyuki Sakamoto , Tsutomu Noda , Keiro Shinkawa
- 申请人: Toshiyuki Sakamoto , Tsutomu Noda , Keiro Shinkawa
- 申请人地址: JPX Tokyo
- 专利权人: Hitachi, Ltd.
- 当前专利权人: Hitachi, Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX2-121349 19900514; JPX2-279340 19901019
- 主分类号: H04N5/21
- IPC分类号: H04N5/21
摘要:
A ghost elimination device equipped in a television receiver extracts a reference signal from the television signal, the reference signal being inserted in the television signal in a certain sequence or at random with the intention of ghost elimination, implements the sequence decoding process and noise elimination process for the reference signal, and controls the characteristics of the ghost eliminating transversal filter which suppresses the transmission distortion. The device includes a sequence decoding circuit for decoding the transmission sequence of the reference signal, a transversal filter for suppressing the distortion of transmission path disposed in a rear stage of sequence decoding circuit, and a controller which introduces the reference signal provided by the filter to control the characteristics of the filter or apply the output of the sequence decoding circuit to the transversal filter through a noise elimination filter. The transversal filter has a tapped delay line formed of registers with an initialization terminal and an input terminal for controlling the initialization terminal.
公开/授权文献
- US4677571A Electronic publishing 公开/授权日:1987-06-30