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
CN107657971AInactive Publication Date: 2018-02-02็Ž‹ๆข…
0 Cites 0 Cited by

Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Applications(China)
Current Assignee / Owner
็Ž‹ๆข…
Publication Date
2018-02-02
Estimated Expiration
Not applicable ยท inactive patent

Smart Images

  • Figure 1
    Figure 1
Patent Text Reader

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.
Need to check novelty before this filing date? Find Prior Art

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

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More