CN103347143B - Large stadium professional networking audio frequency and video processing equipment and processing method thereof - Google Patents

Abstract

The invention discloses a kind of large stadium professional networking audio frequency and video processing equipment, it is characterised in that: it apparatus for processing audio including being sequentially connected with, a character adding processor, a digital/analog converter, an audio frequency and video clock synchronization circuit, an audiovisual compression card, an audio frequency and video back-up device；It also includes a video process apparatus, a communication unit, and described video process apparatus is connected with character adding processor；Described communication unit is connected with audiovisual compression card.Invention additionally discloses the processing method utilizing the said equipment to process networking audio, video data.The apparatus for processing audio of the present invention has the serial audio input interface of standard, support multiple audio frequency pattern of the input, there is audio equilibrium, volume adjusting, dynamic range control, DC filtering, the function such as postemphasis, system has automatic frequency detection function, it is possible to automatically detects the sample frequency of input audio signal and automatically loads the filter coefficient of corresponding band.

Description

Large stadium professional networking audio frequency and video processing equipment and processing method thereof

Technical field

The invention belongs to broadcast television industry audio frequency and video and make playing device field, be specifically related to a kind of large stadium professional networking audio frequency and video processing equipment, and the method utilizing this equipment process audio, video data.

Background technology

The appearance of digital technology of 19th century brings tremendous influence to work and the life of people, and in the digital times that this science and technology develops rapidly, digital audio technology then can deserve to be called one of most widely used digital technology in Digital Signal Processing.The major advantage of digital audio technology is to improve the quality of audio signal, the capacity of resisting disturbance of enhancing signal, it is simple to the storage of signal, transmits and processes.

But, existing apparatus for processing audio, not there is the sample frequency of automatically detection input audio signal and automatically load the filter coefficient of corresponding band and support multiple audio frequency pattern of the input, and there are audio equilibrium, volume adjusting, dynamic range control, DC filtering, a series of functions such as postemphasis；Meanwhile, the image data acquiring frame rate of existing video process apparatus, image analytic degree parameter can not be arranged in real time according to the suggestion of client.

Therefore, processing for a total digitalization of design, low cost, networking audio frequency and video processing equipment high-effect, compact appearance provide possibility.

Summary of the invention

For the deficiencies in the prior art, this invention address that a kind of a kind of large stadium professional networking audio frequency and video processing equipment solving the problems referred to above of offer, and the method utilizing this equipment process audio, video data.

The technical scheme that the present invention uses for achieving the above object is:

A kind of large stadium professional networking audio frequency and video processing equipment, it apparatus for processing audio including being sequentially connected with, a character adding processor, a digital/analog converter, an audio frequency and video clock synchronization circuit, an audiovisual compression card, an audio frequency and video back-up device；It also includes a video process apparatus, a communication unit, and described video process apparatus is connected with character adding processor；Described communication unit is connected with audiovisual compression card.

It also includes an audio collecting device and a video acquisition device, and described audio collecting device is connected with apparatus for processing audio, and described video acquisition device is connected with video process apparatus.

Described apparatus for processing audio, it includes that a DSP digital audio processor, a serial audio interface, an I2C interface, a data path, a coefficient register, a control depositor, an automatic frequency detection select functional module, a volume adjusting function module, a left audio data-out port and a right audio channel data-out port with filter coefficient；

Described DSP digital audio processor is connected with control depositor, coefficient register, data path respectively；

Described serial audio interface is connected with serial audio data input signal cable, serial clock signal line, data path, control depositor respectively；

The detection of described automatic frequency selects functional module to be connected with serial audio data input signal cable, serial clock signal line, coefficient register, control depositor respectively with filter coefficient；

Described I2C interface is connected with I2C clock input signal line, I2C data-in signal line, coefficient register, control depositor respectively；

Described volume adjusting function module is connected with controller depositor, data path respectively；

Described data path is connected with left audio data-out port, right audio channel data-out port respectively；

Described left audio data-out port, right audio channel data-out port are connected with character adder respectively.

Described video process apparatus, it includes a HDMI video matrix processor, a HDMI video decoder, an I2C interface, a coefficient register, a control depositor, a HDMI video encoder, a video input port and a video-out port；

Described HDMI video matrix processor is connected with HDMI video decoder, HDMI video encoder, coefficient register, control depositor respectively；

Described I2C interface is connected with I2C clock input signal line, I2C data-in signal line, coefficient register, control depositor respectively；

Described video input port is connected with video data input line, HDMI video decoder respectively, controls depositor；

Described HDMI video encoder is connected with video-out port；

Described video-out port is connected with character adder.

Described audio frequency and video clock synchronization circuit, it is synchronization with audio frequency that it uses chip MK2745 to complete video.

Described communication unit, it includes the antenna that a RJ45 interface being connected with ethernet interface module and a Wi-Fi module connect, and described audiovisual compression card is connected with ethernet interface module, Wi-Fi module respectively.

Described audio frequency and video back-up device, it is a CD writer, and described CD writer is built-in with an audio frequency and video recording function module and a data storage hard disk.

A kind of processing method processing audio, video data utilizing above-mentioned large stadium professional networking audio frequency and video processing equipment, it comprises the steps:

(1) large stadium professional networking audio frequency and video processing equipment is set, turns on the power so that it is in running order；

(2) initialization of large stadium professional networking audio frequency and video processing equipment；

(3) apparatus for processing audio receives and processes the voice data of audio collecting device collection；

Video process apparatus receives and processes the video data of video acquisition device collection；

(4) the transmission character adder of data message after step (3) processes, send character adding interface function to process needing the position of the font of superposition, the character area information on image, scheme of colour, output format, result is given alternately digital/analog converter again, is converted to digital signal；

(5) by the digital signal of step (4), being transmitted to audio frequency and video clock synchronization circuit and process, the data message after processing is transmitted to audiovisual compression card；First, the data message received is divided into polylith, every piece is divided into the video sequence that the audio, video data that a size is 8*8 is constituted, described audiovisual compression card uses DCT base encoder to be compressed the data message received, described DCT base encoder includes a DCT variator, a quantizer and an entropy coder, wherein, the DCT change function that DCT variator uses is:

$F(u,v)=\frac{1}{4}C\left(u\right)C\left(v\right)\left[\underset{i=0}{\overset{7}{\mathrm{\Σ}}}\underset{j=0}{\overset{7}{\mathrm{\Σ}}}f(i,j)\cos \frac{(2i+1)\mathrm{u\π}}{16}\cos \frac{(2j+1)\mathrm{v\π}}{16}\right]$

Wherein: as u, v=0；Otherwise, C (u), C (v)=1；

(i, j) in the video sequence of the audio, video data composition of 8*8, currently processed audio, video data, wherein, i, j are currently processed audio, video data locus in the video sequence of 8*8 to f；

(6) data message after step (5) being processed is transmitted to audio frequency and video back-up device, communication unit respectively, and audio, video data is backed up by described audio frequency and video back-up device,

Arranging an audio frequency and video decompressing device and a playing device, audio, video data is sent to audio frequency and video decompressing device by described communication unit, then sends playing device to and carry out real-time play；

Described audio frequency and video decompressing device, use DCT base decoder that the data message received is decompressed, described DCT base encoder include an entropy decoder, an inverse DCT and a DCT against variator, wherein, the DCT inversion function that DCT uses against variator is:

$f(i,j)=\frac{1}{4}C\left(u\right)C\left(v\right)\left[\underset{u=0}{\overset{7}{\mathrm{\Σ}}}\underset{v=0}{\overset{7}{\mathrm{\Σ}}}F(u,v)\cos \frac{(2i+1)\mathrm{u\π}}{16}\cos \frac{(2j+1)\mathrm{v\π}}{16}\right]$

Wherein: as u, v=0,Otherwise, C (u), C (v)=1.

Described step (2) its specifically include following steps:

(21) the automatic frequency detection of apparatus for processing audio selects functional module with filter coefficient, is analyzed the audio, video data of audio data input signal line；Retransmit order to DSP digital audio processor, send commands to I2C interface, then cooperation coefficient depositor by I2C clock input signal line, I2C data-in signal line, complete the setting of filter coefficient；

(22) video process apparatus, sends commands to I2C interface, cooperation coefficient depositor by I2C clock input signal line, I2C data-in signal line, completes image data acquiring frame rate, the setting of image analytic degree parameter；

(23) character adder, is set its character size, the character location parameter on image；

(24) audiovisual compression card, is set its compression parameters；

Without sequencing between described step (21), step (22), step (23) and step (24).

Described step (3) its specifically include following steps:

(31) audio frequency and video processing means, the audio, video data of audio data input signal line is analyzed, analysis result is sent to DSP digital audio processor, described DSP digital audio processor is according to analysis result, send commands to realize the volume adjusting function module of the regulation of volume, then volume adjusting result is sent to data path；

The voice data information that audio collecting device gathers, pass through serial audio interface, hand to be provided with equalizer, after the data path of wave filter processes, then be sent to character adder through left audio data-out port, right audio channel data-out port respectively；

(32) video process apparatus, the video data of collection is sent to HDMI video decoder by video input port and processes by video acquisition device, video data information after processing is transmitted to HDMI video matrix processor and processes, video data information after processing is transmitted to HDMI video encoder and processes, after be sent to character adding processor through video-out port；

Without sequencing between described step (31), step (32).

The apparatus for processing audio of the present invention has the serial audio input interface of standard, support multiple audio frequency pattern of the input, there is audio equilibrium, volume adjusting, dynamic range control, DC filtering, the function such as postemphasis, system has automatic frequency detection function, it is possible to automatically detects the sample frequency of input audio signal and automatically loads the filter coefficient of corresponding band.The apparatus for processing audio of the present invention, video process apparatus can be by the control depositor within the configuration of I2C interface and filter coefficients so that user can obtain optimal vision and auditory effect according to the concrete suitable parameter of use ambient As.

The video process apparatus of the present invention can also needing image data acquiring frame rate, the real-time setting of image analytic degree parameter according to client.

Below in conjunction with the accompanying drawings with detailed description of the invention, the present invention is further described.

Accompanying drawing explanation

Fig. 1 is the overall structure frame diagram of the present invention；

Fig. 2 is the structural framing figure of the apparatus for processing audio in Fig. 1；

Fig. 3 is the structural framing figure of the video process apparatus in Fig. 1；

Fig. 4 is the compression process figure of the audiovisual compression card in Fig. 1；

Fig. 5 is the decompression flow chart of Fig. 1 middle pitch video decompression apparatus；

Wherein:

1. serial audio data input signal cable 2. serial clock signal line

3.I2C clock input signal line 4.I2C data-in signal line

5. video data input line

Detailed description of the invention

See Fig. 1～Fig. 3, the invention provides a kind of large stadium professional networking audio frequency and video processing equipment, it apparatus for processing audio including being sequentially connected with, a character adding processor, a digital/analog converter, an audio frequency and video clock synchronization circuit, an audiovisual compression card, an audio frequency and video back-up device；It also includes a video process apparatus, a communication unit, and described video process apparatus is connected with character adding processor；Described communication unit is connected with audiovisual compression card.

It also includes an audio collecting device and a video acquisition device, and described audio collecting device is connected with apparatus for processing audio, and described video acquisition device is connected with video process apparatus.

Described apparatus for processing audio, it includes that a DSP digital audio processor, a serial audio interface, an I2C interface, a data path, a coefficient register, a control depositor, an automatic frequency detection select functional module, a volume adjusting function module, a left audio data-out port and a right audio channel data-out port with filter coefficient；

Described DSP digital audio processor is connected with control depositor, coefficient register, data path respectively；

Described serial audio interface is connected with serial audio data input signal cable, serial clock signal line, data path, control depositor respectively；

The detection of described automatic frequency selects functional module to be connected with serial audio data input signal cable, serial clock signal line, coefficient register, control depositor respectively with filter coefficient；

Described I2C interface is connected with I2C clock input signal line, I2C data-in signal line, coefficient register, control depositor respectively；

Described volume adjusting function module is connected with controller depositor, data path respectively；

Described data path is connected with left audio data-out port, right audio channel data-out port respectively；

Described left audio data-out port, right audio channel data-out port are connected with character adder respectively.

Described video process apparatus, it includes a HDMI video matrix processor, a HDMI video decoder, an I2C interface, a coefficient register, a control depositor, a HDMI video encoder, a video input port and a video-out port；

Described HDMI video matrix processor is connected with HDMI video decoder, HDMI video encoder, coefficient register, control depositor respectively；

Described I2C interface is connected with I2C clock input signal line, I2C data-in signal line, coefficient register, control depositor respectively；

Described video input port is connected with video data input line, HDMI video decoder respectively, controls depositor；

Described HDMI video encoder is connected with video-out port；

Described video-out port is connected with character adder.

Described audio frequency and video clock synchronization circuit, it is synchronization with audio frequency that it uses chip MK2745 to complete video.

Described communication unit, it includes the antenna that a RJ45 interface being connected with ethernet interface module and a Wi-Fi module connect, and described audiovisual compression card is connected with ethernet interface module, Wi-Fi module respectively.

Described audio frequency and video back-up device, it is a CD writer, and described CD writer is built-in with an audio frequency and video recording function module and a data storage hard disk.

A kind of processing method processing audio, video data utilizing above-mentioned large stadium professional networking audio frequency and video processing equipment, it comprises the steps:

(1) large stadium professional networking audio frequency and video processing equipment is set, turns on the power so that it is in running order；

(2) initialization of large stadium professional networking audio frequency and video processing equipment；

(3) apparatus for processing audio receives and processes the voice data of audio collecting device collection；

Video process apparatus receives and processes the video data of video acquisition device collection；

(4) the transmission character adder of data message after step (3) processes, send character adding interface function to process needing the position of the font of superposition, the character area information on image, scheme of colour, output format, result is given alternately digital/analog converter again, is converted to digital signal；

(5) by the digital signal of step (4), being transmitted to audio frequency and video clock synchronization circuit and process, the data message after processing is transmitted to audiovisual compression card；First, the data message received is divided into polylith, every piece is divided into the video sequence that the audio, video data that a size is 8*8 is constituted, described audiovisual compression card uses DCT base encoder to be compressed the data message received, described DCT base encoder includes a DCT variator, a quantizer and an entropy coder, wherein, the DCT change function that DCT variator uses is:

$F(u,v)=\frac{1}{4}C\left(u\right)C\left(v\right)\left[\underset{i=0}{\overset{7}{\mathrm{\Σ}}}\underset{j=0}{\overset{7}{\mathrm{\Σ}}}f(i,j)\cos \frac{(2i+1)\mathrm{u\π}}{16}\cos \frac{(2j+1)\mathrm{v\π}}{16}\right]$

Wherein: as u, v=0；Otherwise, C (u), C (v)=1；

(i, j) in the video sequence of the audio, video data composition of 8*8, currently processed audio, video data, wherein, i, j are currently processed audio, video data locus in the video sequence of 8*8 to f；

(6) data message after step (5) being processed is transmitted to audio frequency and video back-up device, communication unit respectively, and audio, video data is backed up by described audio frequency and video back-up device,

Arranging an audio frequency and video decompressing device and a playing device, audio, video data is sent to audio frequency and video decompressing device by described communication unit, then sends playing device to and carry out real-time play；

Described audio frequency and video decompressing device, use DCT base decoder that the data message received is decompressed, described DCT base encoder include an entropy decoder, an inverse DCT and a DCT against variator, wherein, the DCT inversion function that DCT uses against variator is:

$f(i,j)=\frac{1}{4}C\left(u\right)C\left(v\right)\left[\underset{u=0}{\overset{7}{\mathrm{\Σ}}}\underset{v=0}{\overset{7}{\mathrm{\Σ}}}F(u,v)\cos \frac{(2i+1)\mathrm{u\π}}{16}\cos \frac{(2j+1)\mathrm{v\π}}{16}\right]$

Wherein: as u, v=0,Otherwise, C (u), C (v)=1.

Described step (2) its specifically include following steps:

(21) the automatic frequency detection of apparatus for processing audio selects functional module with filter coefficient, is analyzed the audio, video data of audio data input signal line；Retransmit order to DSP digital audio processor, send commands to I2C interface, then cooperation coefficient depositor by I2C clock input signal line, I2C data-in signal line, complete the setting of filter coefficient；

(22) video process apparatus, sends commands to I2C interface, cooperation coefficient depositor by I2C clock input signal line, I2C data-in signal line, completes image data acquiring frame rate, the setting of image analytic degree parameter；

(23) character adder, is set its character size, the character location parameter on image；

(24) audiovisual compression card, is set its compression parameters；

Without sequencing between described step (21), step (22), step (23) and step (24).

Described step (3) its specifically include following steps:

(31) audio frequency and video processing means, the audio, video data of audio data input signal line is analyzed, analysis result is sent to DSP digital audio processor, described DSP digital audio processor is according to analysis result, send commands to realize the volume adjusting function module of the regulation of volume, then volume adjusting result is sent to data path；

The voice data information that audio collecting device gathers, by serial audio interface, hands to be provided with equalizer, after the data path of wave filter processes, then is sent to character adder through left audio data-out port, right audio channel data-out port respectively；

(32) video process apparatus, the video data of collection is sent to HDMI video decoder by video input port and processes by video acquisition device, video data information after processing is transmitted to HDMI video matrix processor and processes, video data information after processing is transmitted to HDMI video encoder and processes, after be sent to character adding processor through video-out port；

Without sequencing between described step (31), step (32).

The apparatus for processing audio of the present invention has the serial audio input interface of standard, support multiple audio frequency pattern of the input, there is audio equilibrium, volume adjusting, dynamic range control, DC filtering, the function such as postemphasis, system has automatic frequency detection function, it is possible to automatically detects the sample frequency of input audio signal and automatically loads the filter coefficient of corresponding band.The apparatus for processing audio of the present invention, video process apparatus can be by the control depositor within the configuration of I2C interface and filter coefficients so that user can obtain optimal vision and auditory effect according to the concrete suitable parameter of use ambient As.

The video process apparatus of the present invention can also needing image data acquiring frame rate, the real-time setting of image analytic degree parameter according to client.

The present invention is not limited to above-mentioned embodiment, and all employings realize all modes of the object of the invention with similarity method of the present invention and system structure, all within protection scope of the present invention.

Claims (8)

1. a large stadium professional networking audio frequency and video processing equipment, it is characterised in that: it includes depending on One apparatus for processing audio of secondary connection, a character adding processor, a digital/analog converter, a sound regard Frequently clock synchronization circuit, an audiovisual compression card, an audio frequency and video back-up device；It also includes at a video Reason device, a communication unit, described video process apparatus is connected with character adding processor；Described communication Unit is connected with audiovisual compression card；Described apparatus for processing audio, it includes a DSP digital audio processing Device, a serial audio interface, an I2C interface, a data path, a coefficient register, a control are posted Storage, one automatic frequency detection with filter coefficient select functional module, a volume adjusting function module, One left audio data-out port and a right audio channel data-out port；Described DSP numeral Audio process is connected with control depositor, coefficient register, data path respectively；Described serial audio Interface is posted with serial audio data input signal cable, serial clock signal line, data path, control respectively Storage connects；Described automatic frequency detection with filter coefficient select functional module respectively with serial audio number Connect according to input signal cable, serial clock signal line, coefficient register, control depositor；Described I2C Interface respectively with I2C clock input signal line, I2C data-in signal line, coefficient register, control Depositor connects；Described volume adjusting function module is connected with controller depositor, data path respectively； Described data path is respectively with left audio data-out port, right audio channel data-out port even Connect；Described left audio data-out port, right audio channel data-out port are folded with character respectively Add processor to connect.

Large stadium the most according to claim 1 professional networking audio frequency and video processing equipment, it is special Levy and be: it also includes an audio collecting device and a video acquisition device, described audio collecting device Being connected with apparatus for processing audio, described video acquisition device is connected with video process apparatus.

Large stadium the most according to claim 1 professional networking audio frequency and video processing equipment, it is special Levying and be: described video process apparatus, it includes a HDMI video matrix processor, a HDMI Video Decoder, an I2C interface, a coefficient register, a control depositor, a HDMI video are compiled Code device, a video input port and a video-out port；

Described HDMI video matrix processor encodes with HDMI video decoder, HDMI video respectively Device, coefficient register, control depositor connect；

Described I2C interface respectively with I2C clock input signal line, I2C data-in signal line, coefficient Depositor, control depositor connect；

Described video input port is connected with video data input line, HDMI video decoder respectively, controls Depositor processed；

Described HDMI video encoder is connected with video-out port；

Described video-out port is connected with character adding processor.

Large stadium the most according to claim 1 professional networking audio frequency and video processing equipment, it is special Levying and be: described audio frequency and video clock synchronization circuit, it uses chip MK2745 to complete video and audio frequency Synchronize.

Large stadium the most according to claim 1 professional networking audio frequency and video processing equipment, it is special Levy and be: described communication unit, it include a RJ45 interface being connected with ethernet interface module and One Wi-Fi module connect antenna, described audiovisual compression card respectively with ethernet interface module, Wi-Fi Module connects.

Large stadium the most according to claim 1 professional networking audio frequency and video processing equipment, it is special Levying and be: described audio frequency and video back-up device, it is a CD writer, and described CD writer is built-in with audio frequency and video Recording function module and a data storage hard disk.

7. one kind utilizes at the large stadium professional networking audio frequency and video that one of claim 1～6 is described The processing method processing audio, video data of reason equipment, it is characterised in that: it comprises the steps:

(1) large stadium professional networking audio frequency and video processing equipment is set, turns on the power so that it is place In duty；

(2) initialization of large stadium professional networking audio frequency and video processing equipment；

(21) the automatic frequency detection of apparatus for processing audio selects functional module with filter coefficient, to sound Frequently the audio, video data of data-in signal line is analyzed；Retransmit order to DSP digital audio processing Device, sends commands to I2C interface by I2C clock input signal line, I2C data-in signal line, Cooperation coefficient depositor again, completes the setting of filter coefficient；

(22) video process apparatus, by I2C clock input signal line, I2C data-in signal line Send commands to I2C interface, cooperation coefficient depositor, complete image data acquiring frame rate, image solution The setting of analysis degree parameter；

(23) character adding processor, is carried out its character size, the character location parameter on image Set；

(24) audiovisual compression card, is set its compression parameters；

Without sequencing between described step (21), step (22), step (23) and step (24)；

(3) apparatus for processing audio receives and processes the voice data of audio collecting device collection；

Video process apparatus receives and processes the video data of video acquisition device collection；

(4) the transmission character adding processor of data message after step (3) processes, it would be desirable to superposition The position of font, character area information on image, scheme of colour, output format send character to Superposition interface function processes, then result is given digital/analog converter alternately, is converted to numeral Signal；

(5) by the digital signal of step (4), it is transmitted to audio frequency and video clock synchronization circuit and processes, Data message after processing is transmitted to audiovisual compression card；First, the data message received is divided into Polylith, every piece is divided into the video sequence that the audio, video data that a size is 8*8 is constituted, described audio frequency and video Compressing card uses DCT base encoder to be compressed the data message received, described DCT base encoder Including a DCT variator, a quantizer and an entropy coder, wherein, DCT variator uses DCT change function is:

$F(u,v)=\frac{1}{4}C\left(u\right)C\left(v\right)\[\underset{i=0}{\overset{7}{\Σ}}\underset{j=0}{\overset{7}{\Σ}}f(i,j)cos\frac{(2i+1)u\mathrm{\π}}{16}cos\frac{(2j+1)v\mathrm{\π}}{16}\]$

Wherein: u Yu v is variable, and C (u) and C (v) is coefficient, as u, v=0；C(u), Otherwise, C (u), C (v)=1；

F (i, j) be 8*8 audio, video data constitute video sequence in, currently processed audio, video data, Wherein, i, j are currently processed audio, video data locus in the video sequence of 8*8；

(u v) is the compressed data information obtained after dct transform to F；

(6) data message after step (5) being processed is transmitted to audio frequency and video back-up device, communication respectively Unit, audio, video data is backed up by described audio frequency and video back-up device；

Arranging an audio frequency and video decompressing device and a playing device, described communication unit is by audio frequency and video number According to being sent to audio frequency and video decompressing device, then send playing device to and carry out real-time play；

Described audio frequency and video decompressing device, uses DCT base decoder to solve the data message received Compression, described DCT base encoder includes an entropy decoder, an inverse DCT and a DCT inversion Device, wherein, the DCT inversion function that DCT uses against variator is:

$f(i,j)=\frac{1}{4}C\left(u\right)C\left(v\right)\[\underset{u=0}{\overset{7}{\Σ}}\underset{v=0}{\overset{7}{\Σ}}F(u,v)cos\frac{(2i+1)u\mathrm{\π}}{16}cos\frac{(2j+1)v\mathrm{\π}}{16}\]$

Wherein: u Yu v is variable, and C (u) and C (v) is coefficient, as u, v=0, C(u),Otherwise, C (u), C (v)=1；

(u, v) for the compressed data information received for F；

F (i, j) be 8*8 audio, video data constitute video sequence in, obtain after current decompression Audio, video data, wherein, i, j are audio, video data locus in the video sequence of 8*8.

Processing method the most according to claim 7, it is characterised in that: its tool of described step (3) Body comprises the steps:

(31) audio frequency and video processing means, is analyzed the audio, video data of audio data input signal line, Analysis result is sent to DSP digital audio processor, and described DSP digital audio processor is according to dividing Analysis result, sends commands to realize the volume adjusting function module of the regulation of volume, then is tied by volume adjusting Fruit is sent to data path；

The voice data information that audio collecting device gathers, by serial audio interface, hands to be provided with all After weighing apparatus, the data path of wave filter process, more respectively through left audio data-out port, right sound Audio data output port is sent to character adding processor；

(32) video process apparatus, the video data of collection is passed through video inputs by video acquisition device Mouth is sent to HDMI video decoder and processes, and the video data information after processing is transmitted to HDMI video matrix processor processes, and the video data information after processing is transmitted to HDMI and regards Frequently encoder processes, after be sent to character adding processor through video-out port；

Without sequencing between described step (31), step (32).