基本信息:
- 专利标题： Apparatus and method of reproducing wide-band mode video signal
- 专利标题（中）：Anlage und Verfahren zur Wiedergabe eines breitbandigen Videosignals
- 申请号：EP00301394.3 申请日：2000-02-22
- 公开(公告)号：EP1032222A2 公开(公告)日：2000-08-30
- 发明人： Muroya, Tsuyoshi , Ishii, Kanju
- 申请人： VICTOR COMPANY OF JAPAN LIMITED
- 申请人地址： 12, Moriya-Cho 3-chome Kanagawa-Ku Yokohama-Shi Kanagawa-Ken JP
- 专利权人： VICTOR COMPANY OF JAPAN LIMITED
- 当前专利权人： VICTOR COMPANY OF JAPAN LIMITED
- 当前专利权人地址： 12, Moriya-Cho 3-chome Kanagawa-Ku Yokohama-Shi Kanagawa-Ken JP
- 代理机构： Crawford, Andrew Birkby
- 优先权： JP5019799 19990226
- 主分类号： H04N9/83
- IPC分类号： H04N9/83
摘要：
A video signal recorded according to PAL (Phase-Alternation Line) system is reproduced. Luminance (300) and chrominance (400) signals of the video signal are separately processed. It is judged (70) whether the video signal has been recorded in a wide-band mode where a luminance carrier frequency is higher than a chrominance subcarrier. A pilot burst signal carried by the chrominance signal for each horizontal blanking period is canceled (240,250) when the video signal is judged as recorded in the wide-band mode. A reproduced composite video signal is output (160) on the basis of the processed luminance and chrominance signals. The luminance carrier frequency may be detected for judging whether the video signal has been recorded in the wide-band. The sub-deemphasis characteristics may be applied to the luminance signal where the sub-deemphasis characteristics is the inverse of sub-emphasis characteristics that has been applied to the luminance signal in recording of the video signal in the wide-band mode (50,60,80).
摘要（中）：
根据PAL（相位交替线）系统记录的视频信号被再现。 分别处理视频信号的亮度（300）和色度（400）信号。 判断（70）视频信号是否已经以亮度载波频率高于色度副载波的宽带模式记录。 当视频信号被判断为以宽带模式记录时，针对每个水平消隐期间的色度信号携带的导频信号信号被消除（240,250）。 基于经处理的亮度和色度信号，输出（160）再现的复合视频信号。 可以检测亮度载波频率，以判断视频信号是否已被记录在宽带中。 子去加重特性可以应用于亮度信号，其中子强调特性是在宽带模式下的视频信号的记录中应用于亮度信号的亚强调特性的倒数（50,60 80）。
公开/授权文献:
IPC结构图谱:
| H | 电学 |
| --H04 | 电通信技术 |
| ----H04N | 图像通信，例如电视 |
| ------H04N9/00 | 彩色电视系统的零部件 |
| --------H04N9/44 | .色同步 |
| ----------H04N9/80 | ..为了记录而对电视信号的变换，例如调制、变频；为了重放的逆变换 |
| ------------H04N9/81 | ...仅按顺序记录各个彩色图像信号成分 |
| --------------H04N9/83 | ....记录的色度信号的频带在记录的亮度信号频带之内 |