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Apparatus and method for reducing the phase discontinuity between the new data and previously written data on the read / write optical storage medium
Apparatus and method for reducing the phase discontinuity between the new data and previously written data on the read / write optical storage medium
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机译：用于减少读/写光学存储介质上的新数据和先前写入的数据之间的相位不连续的设备和方法
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摘要
PROBLEM TO BE SOLVED: To provide an optical data storing device which can reduce discontinuity of a phase between new data and data previously written without using edition gap. ;SOLUTION: This optical data storage device comprises a laser driver 36, an optical pickup unit including a laser coupled to the laser driver 36, a write-in clock generator 40 providing a read-back signal by an output of this optical pickup unit and supplying a write-in clock to the laser driver in write-in operation, a first means for obtaining first and second signals from a read-back signal, and a second means indicating a first read-back signal component generated by modulation of the laser by the first signal, indicating a second read-back signal component generated by external modulation of the laser beam by the second signal, further adjusting a phase of the write-in clock by phase difference between the first signal and the second signal.;COPYRIGHT: (C)2000,JPO
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