发明名称 |
Apparatus for and method of adding information onto recording medium that enables additional recording |
摘要 |
An apparatus for recording first information onto a recording medium, successively to second information that has been already recorded on the recording medium is provided. The first and second information are divided into a plurality of blocks. Each block includes a synchronization signal. This signal is located at a predetermined position in each block. A plurality of pre-pits are pre-formed on the recording medium at intervals of the predetermined length or an integer times the predetermined length. A reference signal with a predetermined frequency is pre-recorded on the recording medium. The apparatus has: a write clock signal generating device for generating a write clock signal on the basis of the reference signal; a pre-pit detecting device for detecting the pre-pits and outputting a pre-pit signal at a first timing, which is equal to a timing that each pre-pit is detected; a synchronization signal generating device for generating the synchronization signal and outputting the synchronization signal at a second timing synchronized with the write clock signal, and which is set so as to place the synchronization signal at the predetermined position in each block; a time relationship detecting device for detecting a time relationship between the pre-pit signal and the synchronization signal; a shifting device for shifting a phase of the write clock signal so as to make the detected time relationship equal to a predetermined time relationship; and a recording device for recording the first information and the synchronization signal onto the recording medium in accordance with the second timing.
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申请公布号 |
US6269059(B1) |
申请公布日期 |
2001.07.31 |
申请号 |
US19990324100 |
申请日期 |
1999.06.02 |
申请人 |
PIONEER ELECTRONIC CORPORATION |
发明人 |
KURODA KAZUO;SUZUKI TOSHIO |
分类号 |
G11B7/0045;G11B20/10;G11B20/12;G11B20/14;G11B27/19;G11B27/24;G11B27/30;(IPC1-7):G11B5/09 |
主分类号 |
G11B7/0045 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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