发明授权
US5321518A Video signal recording and reproducing apparatus using an added specific
signal during recording
失效
在记录期间使用附加的特定信号的视频信号记录和再现装置
- 专利标题: Video signal recording and reproducing apparatus using an added specific signal during recording
- 专利标题(中): 在记录期间使用附加的特定信号的视频信号记录和再现装置
-
申请号: US893009申请日: 1992-06-03
-
公开(公告)号: US5321518A公开(公告)日: 1994-06-14
- 发明人: Hideaki Mita , Atsuo Ochi , Yasuo Hamamoto
- 申请人: Hideaki Mita , Atsuo Ochi , Yasuo Hamamoto
- 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
- 主分类号: H04N5/923
- IPC分类号: H04N5/923 ; H04N9/81 ; H04N9/79
摘要:
In a video signal recording/reproducing apparatus for emphasizing an input video signal, recording by adding an additional signal necessary for recording, and de-emphasizing when reproducing, the emphasis processing is stopped on the time axis in a period in which the additional signal is to be added. Besides, by adding an additional signal before emphasis processing, the waveform deterioration in the end portion of the effective period occurring due to the addition of additional signal after emphasis processing is decreased, and a favorable waveform reproduction is realized over the entire period of the effective portions.
公开/授权文献
- US5896653A Portable D.C. power electro-chemical etching tool and method 公开/授权日:1999-04-27