Signal processing device with radio frequency broadband amplification device

A technology of a signal processing device and an amplifying device, which is applied in recording signal processing, information storage, recording information storage, etc., can solve the problems of low accuracy, slow reading speed, slow focusing, etc., so as to ensure the reading accuracy rate, improve the The effect of focus speed

Inactive Publication Date: 2018-02-02
王梅
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  • Abstract
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Problems solved by technology

Existing DVD players are slower to fo

Method used

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  • Signal processing device with radio frequency broadband amplification device

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Embodiment

[0015] Such as figure 1 As shown, a signal processing device with a radio frequency broadband amplification device, 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, and a focus driver , tracking coil, tracking 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 The tracking error detection device is connected to the radio frequency amplifier respectively, 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, and the analog-to-digital converter is connected to The servo DSP is connected, the digital-to-analog converter and the PWM convert...

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Abstract

The invention discloses a signal processing device with a radio frequency broadband amplification device, 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, tracking coil, tracking 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 The device and the tracking error detection device are respectively connected to the radio frequency amplifier, and the focus error detection device and the tracking error detection device are respectively connected to a multiplexer, and the multiplexer is connected to an analog-to-digital converter, and the analog-to-digital converter Connect with 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 a laser head amplifier, a radio frequency amplifier, a 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 signal processing device with a radio frequency broadband amplification device. 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 reac...

Claims

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Application Information

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IPC IPC(8): G11B7/004G11B7/09G11B20/10
CPCG11B7/004G11B7/0901G11B7/0908G11B7/0938G11B20/10027
Inventor 王梅
Owner 王梅
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