发明名称 |
Optical disk control device for time-division-multiplexing and A/D conversion |
摘要 |
An optical disk control device comprises a playback signal detection unit for detecting data recorded on a disk by irradiating the disk with a converged light beam; a signal switching unit for successively selecting plural data signals obtained by the playback signal detection unit, and performing time-division-multiplexing on the selected signals; an A/D conversion unit for converting an analog signal which has been time-division-multiplexed by the signal switching unit, into a digital signal; an A/D conversion command unit for generating an A/D conversion command of the A/D conversion unit; a serial transfer unit for serial-transferring the command signal generated by the A/D conversion command unit; a serial reception unit for receiving the signal from the serial transfer unit, and controlling the signal selection operation of the signal switching unit on the basis of the received signal; and an arithmetic unit for generating an optical disk drive controlling signal by performing arithmetic processing on the digital signal outputted from the A/D control unit. Therefore, the number of signal lines required for connection between the playback signal detection unit and the A/D conversion unit can be significantly reduced.
|
申请公布号 |
US7233551(B2) |
申请公布日期 |
2007.06.19 |
申请号 |
US20010025998 |
申请日期 |
2001.12.26 |
申请人 |
MATSUSHITA ELECTRIC INDUSTRIAL CO., LTD. |
发明人 |
ABE MASAYOSHI;KONNO KOUJU;IZUMI TERUHIKO;TAI YASUHIRO |
分类号 |
G11B7/005;G11B7/09;G11B20/00;G11B20/02;G11B20/10 |
主分类号 |
G11B7/005 |
代理机构 |
|
代理人 |
|
主权项 |
|
地址 |
|