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2. 发明授权

US06885626B2 Information recording/reproducing apparatus 失效
标题翻译：信息记录/重放装置
公开(公告)号：US06885626B2
公开(公告)日：2005-04-26
申请号：US10157125
申请日：2002-05-30
申请人： Tetsuo Kadoshima , Michio Fujita , Yoshihiro Aso
发明人： Tetsuo Kadoshima , Michio Fujita , Yoshihiro Aso
IPC分类号： H04N19/00 , G11B20/10 , G11B20/12 , G11B20/14 , G11B27/00 , G11B27/034 , G11B27/32 , H04N19/40 , H04N19/423 , G11B7/00 , G11B5/09
CPC分类号： G11B27/329 , G11B20/10527 , G11B27/034 , G11B2020/00014 , G11B2020/00043 , G11B2020/10546 , G11B2220/2529
摘要： An information recording/reproducing apparatus which allows freer utilization of data compressed under different data compression schemes. When data recorded on a magneto-optical disc of an MD under the ATRAC compression scheme is converted into that of the ATRAC3 compression scheme and re-recorded on the magneto-optical disc, selector switches are changed over in a predetermined combination. The data recorded under the ATRAC compression scheme is read and demodulated by a signal processing unit. The demodulation data is decoded into linear PCM data by a data expansion decoder. The linear PCM data is converted into data of the ATRAC3 compression scheme by a data compression encoder. The resultant is modulated by the signal processing unit and re-recorded on the magneto-optical disc. Here, the track numbers of the data originally recorded under the ATRAC compression scheme are kept unchanged, and associated with the data which is converted and recorded under the ATRAC3 compression scheme. UTOC data thereof is recorded on the MD.
摘要翻译：一种信息记录/再现装置，其允许在不同的数据压缩方案下压缩的数据的更自由的利用。当在ATRAC压缩方案下记录在MD的磁光盘上的数据被转换成ATRAC3压缩方案的数据并被重新记录在磁光盘上时，以预定的组合改变选择器开关。在ATRAC压缩方案下记录的数据由信号处理单元读取和解调。解调数据由数据扩展解码器解码成线性PCM数据。线性PCM数据由数据压缩编码器转换成ATRAC3压缩方案的数据。结果由信号处理单元调制并重新记录在磁光盘上。这里，原始在ATRAC压缩方案下记录的数据的轨道号保持不变，并且与在ATRAC3压缩方案下转换和记录的数据相关联。 UTOC数据被记录在MD上。

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