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CD machine temperature compensation method and apparatus

A temperature compensation device and technology for temperature compensation, applied in optical recording/reproduction, optical recording/reproduction/erasing methods, light beam sources, etc., can solve problems such as poor burning results and light source wavelength changes

Inactive Publication Date: 2009-01-14
QUANTA STORAGE INC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, as the burning time increases, the temperature of the laser pickup head also increases, which causes the wavelength of the light source emitted by the laser pickup head to change, and loses the appropriateness of the original light wavelength before the temperature rise for the optical disc setting. Sensitivity, resulting in poor programming results

Method used

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  • CD machine temperature compensation method and apparatus
  • CD machine temperature compensation method and apparatus
  • CD machine temperature compensation method and apparatus

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Embodiment Construction

[0025] In order to achieve the above-mentioned purpose, the technical means and effects thereof adopted by the present invention are now given as preferred embodiments, and are described as follows in conjunction with the accompanying drawings.

[0026] Please refer to figure 2 , which is a schematic diagram of the first embodiment of the optical disc temperature compensation device of the present invention, including a light emitting unit 10, an optical power sensing unit 20, a temperature sensing unit 30, an input / output unit 40, a controller 50, a writing strategy unit 60, And a drive unit 70 for reading or burning an optical disc 80 . In the present invention, the light-emitting unit 10 is a laser diode, the optical power sensing unit 20 is an optical power sensor, the temperature sensing unit 30 is a temperature sensor, and the output and input unit 40 is an arithmetic unit, a controller 50, and a writing strategy. Unit 60 is a timing generator, and driving unit 70 is a...

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Abstract

Using a luminous power sensor measures first power of light source sent from an illuminator. Using a temperature sensor measures temperature of the illuminator, and the measured temperature is input to an input / output unit in order to find out second power in use for compensating first power. Next, first power in input to a controller. Then, there are two different temperature compensation modes: (1) inputting second power to controller to compensate difference value of deficient power of the first power; or (2) inputting second power to a writing strategy unit; using method of changing output time sequence without changing output power to increase luminous energy of laser of burning optical disc to reach effect of compensating temperature of optical disc drive.

Description

technical field [0001] The invention relates to a method and device for temperature compensation of an optical disc drive, in particular to a method for measuring the temperature of a laser diode by using a temperature sensor, finding out the electric power corresponding to the temperature, and determining the power or timing of the optical output to achieve the best burning. A temperature compensation method and device for an optical disc drive with recording quality. Background technique [0002] The modulation mechanism of the light source of the optical disk drive is to adjust the light power of light emission, so as to expect the light source to maintain a constant output. The traditional light source modulation mechanism of CD-ROM is to set an optical power sensor (front sensor) next to the light source, that is, the laser diode, to test the light power of the laser diode at any time, and transmit the measured light power to the controller that controls the light emiss...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G11B7/0045G11B7/125G11B7/1263
Inventor 黄识忠陈尚昊
Owner QUANTA STORAGE INC