Method for improving optical recording media reading signal stability

Abstract

The invention discloses a method for improving the stability of optical recording media reading signals, comprising the steps of: adjusting the absorptivity of an optical recoding media by changing the thickness of the optical recording media, namely improving the absorptivity of the optical recoding media by increasing the thickness of the optical recording media; and lowering the ratio of erasing power to writing power. According to the method, the disc absorptivity is controlled by adjusting the recording media thickness, and matched with the ratio of writing power (Pw) to erasing power (Pe) of the recording laser, so that a laser irradiating power most appropriate for changing specific recording film optical property is got. With the initial writing signal jitter value not being changed greatly, as the recording layer thickness increases appropriately, when the absorptivity corresponds to specific absorptivity scope and matches well with the low ratio of erasing power (Pe) and writing power (Pw), superior signal reading stability can be achieved under high-speed recording.

Description

Technical field: [0001] The invention relates to a method for improving the stability of reading signals from an optical recording medium. Background technique: [0002] Optical information storage is to use laser light technology to record data in optical recording media. The principle is to use focused laser light to change the structure of the optical disc recording layer material, so that the reflectivity is significantly different when reading due to structural differences. , as the recording and reading of 0 and 1 signals. The types of optical recording media include read-only optical discs, write-once optical discs, and rewritable optical discs. The rewritable optical discs use phase-change recording layer materials to produce crystalline or amorphous phases under different intensities of laser light. structure, through the reversible phase transition between the crystalline phase and the amorphous phase to achieve the function of repeated reading and writing of data...

AI Technical Summary

Problems solved by technology

However, the aforementioned patent does not mention its impact on the stability of data reading. Sometimes even if the recording medium can have good recording characteristics (such as low jitter value) when the signal is written for the first time, the disc film structure and If the recording parameters are not properly designed, the disc will easily accumulate heat in the recording layer after reading data repeatedly, which will cause changes in the recording marks and further lead to the loss of recorded data.

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