知搜-全球专利检索

  1. 登录
  2. 注册
发明授权
CN1716393B 扫描记录盘发现缺陷的方法和在盘形记录媒体上记录信息的记录设备 失效 - 权利终止

扫描记录盘发现缺陷的方法和在盘形记录媒体上记录信息的记录设备
摘要：
描述了用于在DVR盘(1)上记录实时视频信号的方法和DVR视频记录器(20)。所述盘可能出现两维的局部缺陷(11；12；13)，但DVR纠错系统非常强大，它能够纠正小局部缺陷(11；12)所引起的错误。为了以迅速有效的方式检查所述盘是否有大的局部缺陷(13)，可基于跟踪信号评价预定测试轨道(2T)的完整性。当发现有缺陷的测试轨道(2T2；2T3)时，会进一步检查该测试轨道的附近区域。如果受影响的轨道数似乎较小，则允许在这些轨道上记录信息；如果受影响的轨道数似乎较大，就将这些轨道放入缺陷列表，该列表优选地是记录在盘上的。在记录期间跳过出现在缺陷列表中的轨道。
摘要（英）：

A method and a DVR video recorder (20) for recording real time video signals on a DVR disc (1) are described. The disc may exhibit two-dimensional spot defects (11; 12; 13) but the DVR error correction system is very powerful and is capable of correcting errors as a result of small spot defects (11; 12). In order to examine in a rapid and efficient manner whether the disc has large spot defects (13), the integrity of predetermined test tracks (2T) is assessed on the basis of the tracking signal. When a defective test track (2T2; 2T3) is found the proximity of said test track is examined further. If the number of affected tracks appears to be small, recording in these tracks is allowed; if the number of affected tracks appears to be large, these tracks are entered in a defect list, which is preferably recorded on the disc. During recording the tracks appearing in the defect list are skipped.

公开/授权文献
0/0