Invention Grant
- Patent Title: Method and apparatus for recording and reproducing information on and from optical disc
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Application No.: US13064148Application Date: 2011-03-08
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Publication No.: US08179757B2Publication Date: 2012-05-15
- Inventor: Yasuhiro Ueki
- Applicant: Yasuhiro Ueki
- Applicant Address: JP Yokohama
- Assignee: Victor Company of Japan, Ltd.
- Current Assignee: Victor Company of Japan, Ltd.
- Current Assignee Address: JP Yokohama
- Agent Louis Woo
- Priority: JP11-325956 19991116; JP11-334099 19991125
- Main IPC: G11B7/00
- IPC: G11B7/00

Abstract:
An apparatus for recording and reproducing an information signal on and from an optical disc includes a memory. The information signal is written into the memory. The information signal is read out from the memory. An optical head generates a laser beam in response to the readout information signal, and applies the laser beam to the optical disc to record the readout information signal on the optical disc. A test signal is recorded on a position of the optical disc near a recording position thereof via the optical head during the writing of the information signal into the memory. The test signal is reproduced from the optical disc. The reproduced test signal is evaluated to generate an evaluation result. An intensity of the laser beam is optimized in response to the evaluation result.
Public/Granted literature
- US20110164482A1 Method and apparatus for recording and reproducing information on and from optical disc Public/Granted day:2011-07-07
Information query
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