Servo signal processing system with slow starting circuit

A signal processing and slow start 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: 2018-02-09
王梅
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Problems solved by technology

Existing DVD players are slower to fo

Method used

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  • Servo signal processing system with slow starting circuit
  • Servo signal processing system with slow starting circuit

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Embodiment

[0017] Such as figure 1 with figure 2 As shown, the servo signal processing system with a slow start circuit includes a slow start circuit, 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, focus driver, tracking coil, tracking driver, digital-to-analog converter, feed motor, feed driver, spindle motor, three-phase spindle driver, PWM converter, the slow start circuit, laser head amplifier, radio frequency amplifier connected in sequence, the focus error detection device and the tracking error detection device are respectively connected to the radio frequency amplifier, the focus error detection device and the tracking error detection device are respectively connected to a multiplexer, and the multiplexer is connected to the analog-to-digital converter connected, the analog-to-digital converter is connected to the servo DSP, the digi...

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Abstract

The invention discloses a servo signal processing system with a slow start circuit, including a slow start circuit, 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, Focus coil, focus driver, tracking coil, tracking driver, digital-to-analog converter, feed motor, feed driver, spindle motor, three-phase spindle driver, PWM converter, the slow start circuit, laser head amplifier, radio frequency The amplifiers are connected in sequence, the focus error detection device and the tracking error detection device are respectively connected to the radio frequency amplifier, the focus error detection device and the tracking error detection device are respectively connected to the multiplexer, the multiplexer is connected to the analog-to-digital converter, and the analog-to-digital conversion The device is connected with the 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 field of signal processing of video disc players, in particular to a servo signal processing system with a slow start circuit. 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;...

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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