Regulation method for write-in policy of recordable optical disk

Abstract

The present invention provides an adjusting method of write strategy of a compact disc-recordable, including following steps: generating a testing smaple in the power correction region of the compact disc-recordable by the first write strategy and the first write power; measuring the flat part and the recess part which lengthes of the plural time are different of the testing sample to generate a symbol cross table from the flat to the recess and a symbol cross table from the recess to the flat; and adjusting the first time parameter set of the first write strategy to generate the second time parameter set according to the symbol cross table from the flat to the recess and the symbol cross table from the recess to the flat.

Description

technical field [0001] The present invention relates to a method for adjusting the writing strategy of a writable optical disc (Recordable Disc), and in particular relates to using an Inter-Symbol Interference (ISI) table to adjust the writing strategy of a writable optical disc. strategy approach. Background technique [0002] Generally, a power calibration area (Power Calibrating Area, PCA area for short) is planned in the specification of the writable optical disc. When a rewritable optical disc is inserted into the optical disc recorder for data writing, the optical pick-up head (Optical Pick-Up Head) of the optical disc recorder will move to the PCA area of ​​the rewritable optical disc to perform optimal power correction (Optimal Power Calibration). Power Calibrating, referred to as OPC) action. After the OPC operation is finished, the optical disc recorder will generate an optimal write power (Optimal Write Power), and use this optimal write power to perform subsequ...

AI Technical Summary

Problems solved by technology

[0008] However, when the manufacturer makes a process change for a rewritable optical disc with a specific disc serial number, the overdrive power and time parameter set stored in the read-only memory in the optical disc recorder is not suitable for the rewritable optical disc after the updated process. disc writing strategy

Therefore, the overdrive power and time parameter set in the read-only memory of the optical disc recorder must be readjusted, otherwise, the writing quality of the rewritable optical disc will deteriorate, and in severe cases, it may even be impossible to complete the data writing operation. CD-ROM for data reading

Or, when the disc serial number of the writable disc loaded by the user does not exist in the read-only memory of the disc recorder, the write strategy defined by the standard overdrive power and time parameter group will also cause write input poor quality

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