发明授权
US07248786B2 Video signal processing apparatus, video signal playback apparatus, and video signal recording apparatus
失效
视频信号处理装置,视频信号重放装置和视频信号记录装置
- 专利标题: Video signal processing apparatus, video signal playback apparatus, and video signal recording apparatus
- 专利标题(中): 视频信号处理装置,视频信号重放装置和视频信号记录装置
-
申请号: US10416659申请日: 2002-09-17
-
公开(公告)号: US07248786B2公开(公告)日: 2007-07-24
- 发明人: Motoki Kato , Masanobu Nakamura , Katsumi Muramatsu
- 申请人: Motoki Kato , Masanobu Nakamura , Katsumi Muramatsu
- 申请人地址: JP
- 专利权人: Sony Corporation
- 当前专利权人: Sony Corporation
- 当前专利权人地址: JP
- 代理机构: Lerner, David, Littenberg, Krumholz & Mentlik, LLP
- 优先权: JP2001-283469 20010918
- 国际申请: PCT/JP02/09492 WO 20020917
- 国际公布: WO03/026290 WO 20030327
- 主分类号: H04N5/91
- IPC分类号: H04N5/91
摘要:
A video signal processing apparatus, a video signal playback apparatus, and a video signal recording apparatus are presented for preventing illegal copying of thumbnail images. For example, a thumbnail encoder generates a thumbnail image of a video signal input from a terminal. A macrovision detector, a CGMS detecting/updating unit, and a WM (watermark) detecting/updating unit detect an analog copy protection signal (APS), a CGMS signal as copy generation management information, and watermark, respectively, of the video signal input from the terminal, and outputs them to a controller. The controller generates copy control information of the thumbnail image based on the input copy control information. The thumbnail image and the copy control information thereof are recorded in an information recording medium. This may be applied to a recording apparatus for recording data into an information recording medium and to a playback apparatus for playing back data recorded in an information recording medium.
公开/授权文献
信息查询