Writing method for optical disk machine

Abstract

The invention discloses a writing method for an optical disk machine. The method comprises the following steps of: firstly, receiving a command for writing an optical disk; secondly, performing an optimum power control (OPC) test on a preset writing data transfer rate; thirdly, acquiring the writing power of the preset writing data transfer rate according to a target quality parameter of the preset writing data transfer rate and a relationship between the quality parameter and the writing power; fourthly, computing an energy-to-area ratio of a writing strategy of each writing data transfer rate; fifthly, taking a product of the energy-to-area ratio of each writing data transfer rate and the writing power of the preset writing data transfer rate as the writing power of each writing data transfer rate; and finally, compensating the writing power with an automatic writing control data transfer rate.

Description

technical field [0001] The invention relates to a burning method for an optical disc drive, in particular to a burning method for adjusting the proper burning power to ensure the burning quality when the optical disc drive switches the burning double speed. Background technique [0002] Burnable optical discs generally irradiate the optical disc with the laser beam emitted by the reading head, and use the burning power of the laser beam to burn marks of different lengths such as pits or phase deformations on the optical disc, resulting in marks and no marks. The difference in the amount of reflected light between marks forms a digital signal to record data. [0003] Such as figure 1 Shown is the recording method of the background optical disc drive, the spindle motor 1 is used to rotate the optical disc 2, the pickup head 3 is moved back and forth along the radial direction of the optical disc 2, and the laser beam is projected onto the optical disc 2. According to the dif...

AI Technical Summary

Problems solved by technology

[0005] However, the variability of the recording power at high recording speeds estimated by experience is too large, making it difficult to maintain a stable recording quality for optical discs

Although, there is another background technology, China Taiwan Announcement No. I27083 patent case, using the OPC test results of low programming speed 2X, directly burn the data, and monitor the quality parameters while burning, and use the experience value to compensate the burning power to achieve the target Quality parameters, because it is impossible to grasp the correct programming power and compensation value for each high programming speed, the quality parameters cannot quickly converge to the target value

There is also the background technology China Taiwan Patent No. 200917233, in which the actual burning test is carried out at each burning double speed, but it is necessary to vacate a test space in each high burning double speed area, which will reduce the storage capacity of the optical disc, and needs to be prepared and Transmission of high-speed test data and patterns interrupts normal data programming, increases programming time, and affects programming efficiency

Therefore, there are still problems to be solved urgently in the adjustment of the burning power of high and low burning double speed in the burning method of the existing CD player.

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