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Servo signal processing system

A signal processing and detection device technology, applied in the field of servo signal processing system, can solve the problems of low accuracy, slow reading speed, slow focusing, etc., to achieve the effect of ensuring reading accuracy and improving focusing speed

Inactive Publication Date: 2018-03-06
王梅
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Existing DVD players are slower to focus, less accurate, and slower to read

Method used

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  • Servo signal processing system

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Embodiment

[0015] Such as figure 1 As shown, the servo signal processing system includes a laser head amplifier, a radio frequency amplifier, a focus error detection device, a tracking error detection device, a multiplexer, an analog-to-digital converter, a servo DSP, a focus coil, a focus driver, a tracking coil, and a tracking Track driver, digital-to-analog converter, feed motor, feed driver, spindle motor, three-phase spindle driver, PWM converter, the laser head amplifier, radio frequency amplifier connection, the focus error detection device, tracking error detection device are respectively connected to radio frequency amplifiers, the focus error detection device and the tracking error detection device are respectively connected to a multiplexer, the multiplexer is connected to an analog-to-digital converter, the analog-to-digital converter is connected to a servo DSP, and the The digital-to-analog converter and the PWM converter are respectively connected with the servo DSP, the f...

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Abstract

The invention discloses a servo signal processing system, including a laser head amplifier, a radio frequency amplifier, a focus error detection device, a tracking error detection device, a multiplexer, an analog-to-digital converter, a servo DSP, a focus coil, a focus driver, a tracking coil, Tracking drive, digital-to-analog converter, feed motor, feed drive, spindle motor, three-phase spindle drive, PWM converter, the laser head amplifier, radio frequency amplifier connection, the focus error detection device, tracking error detection The devices are respectively connected with radio frequency amplifiers, the focus error detection device and the tracking error detection device are respectively connected with a multiplexer, the multiplexer is connected with an analog-to-digital converter, and the analog-to-digital converter is connected with a servo DSP. The present invention realizes the purpose of improving the focusing speed of the video disc player and ensuring the reading accuracy of the video disc player through the laser head amplifier, the radio frequency amplifier, the focus error detection device and adding feedback.

Description

technical field [0001] The invention relates to the signal processing field of video disc players, in particular to a servo signal processing system. Background technique [0002] Video disc players, also collectively referred to as video disc players, are devices that play the sound of movies on discs. A DVD player is an audio-visual device produced by combining digital video technology, digital audio-frequency laser disc technology and computer technology. It has a wide variety of models, and the types of DVD players are mainly distinguished by the types of DVDs that support playback, generally including VCD, Super VCD, DVD, and EVD. Video disc players generally use 12cm discs, which are similar in appearance, but the content format of the discs is different, resulting in different types of machines used. The horizontal definition of ordinary VCD is generally 240-280 lines; the horizontal definition of super VCD can reach about 350-380 lines; the horizontal definition of...

Claims

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Application Information

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IPC IPC(8): G11B7/09
CPCG11B7/0908
Inventor 王梅
Owner 王梅
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