RF amplification and digital signal processing equipment

A digital signal processing and equipment technology, applied in recording signal processing, digital signal error detection/correction, digital recording/reproducing, etc., can solve the problems of data decryption failure, lack of good copy and decryption methods for DVD players, etc., to improve stability , the effect of improving data decryption performance

Inactive Publication Date: 2018-02-02
王梅
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The technical problem to be solved by the present invention is that the existing video disc player does not have a good means of copying and decrypting, which may easily cause data decryption failure. The purpose is to provide RF amplification and digital signal processing equipment to improve the stability of the data decryption performance of the video disc player

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  • RF amplification and digital signal processing equipment

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Embodiment

[0014] Such as figure 1 As shown, RF amplification and digital signal processing equipment, including laser head amplifiers, radio frequency amplifiers, synchronous detection amplifiers, data separators, automatic gain controllers, automatic limiters, demodulators, error correction devices, serial and parallel processors, EFM demodulator, copy protection decryptor, descrambling device, format interface, the laser head amplifier, radio frequency amplifier, synchronous detection amplifier, data separator are connected in sequence, the automatic gain controller is connected with the automatic limiter, and the The demodulator is connected with the error correction device, the automatic gain controller and the demodulator are respectively connected with the data separator, the automatic limiter and the error correction device are respectively connected with the serial parallel processor, and the EFM demodulator The EFM demodulator is connected to the descrambling device, and the co...

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Abstract

The invention discloses RF amplification and digital signal processing equipment, including laser head amplifier, radio frequency amplifier, synchronous detection amplifier, data separator, automatic gain controller, automatic amplitude limiter, demodulator, error correction device and serial-parallel processor , EFM demodulator, copy protection decryptor, descrambling device, format interface, the laser head amplifier, radio frequency amplifier, synchronous detection amplifier, data separator are connected in turn, and the automatic gain controller is connected with the automatic limiter, The demodulator is connected to the error correction device, and the automatic gain controller and the demodulator are respectively connected to the data separator. The invention enhances DVD data through laser head amplifier, radio frequency amplifier, synchronous detection amplifier, data separator, automatic gain controller, automatic limiter, demodulator, error correction device, serial-parallel processor and EFM demodulator processing, and then improve the stability of the data decryption performance of the DVD player through the copy protection decryptor.

Description

technical field [0001] The invention relates to the field of signal processing of video disc players, in particular to RF amplification and digital signal processing equipment. 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; t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G11B20/00G11B20/10G11B20/18
CPCG11B20/0021G11B20/10018G11B20/1833
Inventor 王梅
Owner 王梅
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