CN205336467U

CN205336467U - Codec

Info

Publication number: CN205336467U
Application number: CN201620045884.7U
Authority: CN
Inventors: 蓝宁
Original assignee: Chengdu Fareast Hi-Tech Co Ltd
Current assignee: Chengdu Fareast Hi-Tech Co Ltd
Priority date: 2016-01-19
Filing date: 2016-01-19
Publication date: 2016-06-22
Anticipated expiration: 2026-01-19

Abstract

The utility model discloses a codec, including SDRAM interface controller, controller and watchdog terminal, the controller is connected on SDRAM interface controller, watchdog terminal connection on the controller, last hardware codec, audio frequency codec, system's encoder, system's decoder, audio frequency input interface, audio output interface, video input interface and the video output interface of still connecting of SDRAM interface controller. The utility model discloses an above -mentioned principle can reduce the file loss when obtaining bigger pressure scaling and littleer file, can also carry out the safety of real time monitoring, guard digit certificate simultaneously to the operation of main program.

Description

Codec

Technical field

This utility model relates to headend equipment, is specifically related to codec。

Background technology

Codec (codec) refers to equipment or a program that a signal or data can flow to line translation。The conversion herein referred to both had included signal or data stream being encoded (typically to transmission, storing or encryption) or extracting the operation obtaining an encoding stream, also included to observe or process the operation recovering to be suitable for the form of observation or operation from this encoding stream。Codec is frequently used in the application such as video conference and Streaming Media, is generally mainly also used in radio, TV and film industries, makes front end applications。Existing codec, in order to obtain bigger compression ratio and less file size, causes that file loss is bigger。It addition, the operation of existing mastery routine lacks monitor in real time, also just service data cannot be effectively protected。

Utility model content

This utility model overcomes the deficiencies in the prior art, it is provided that codec, and the operation of mastery routine, obtaining bigger compression ratio and more can reduce file loss while small documents, can also be carried out monitor in real time, the safety of protection data by this codec simultaneously。

For solving above-mentioned technical problem, this utility model is by the following technical solutions: codec, including sdram interface controller, controller and house dog terminal, described controller is connected on sdram interface controller, house dog terminal connects on the controller, and described sdram interface controller is also connected with hardware compression device, audio codec, systematic encoder, system decoder, audio input interface, audio output interface, video input interface and video output interface。Sdram interface supervisor controls data on hardware compression device, audio codec, systematic encoder, system decoder, audio input interface and video input interface from internal memory loading/unloading, and the integrity of data is detected, the incoming controller of satisfactory data is processed, then the data after encoding and decoding is exported through video output interface or audio output interface。This codec utilize hardware compression device HD video (up to 1440 points × 1080 row) is carried out real-time compression and decompression, utilize audio codec that the audio frequency of Dolby number format is carried out synchronous compression and decompression, the encoding and decoding of other data then utilize systematic encoder and system decoder to realize, the data needing encoding and decoding are made a distinction encoding and decoding, obtain bigger compression ratio and more can reduce file loss while small documents, compatible better, codec data is more accurate。The sdram interface controller adopted in this programme is low energy-consumption electronic device, and compact dimensions, reduces the size of data encoder。Also setting up house dog terminal on a processor for monitoring the operation of mastery routine, it is prevented that the unconfined operation of program, cause endless loop, simultaneously when receiving and send data to the process accepting and sending time-out, protection data and circuit are from damage。

Described sdram interface controller is also connected with Host interface。This interface is convenient transmits signal with outside。

Described controller is also connected with PLL phaselocked loop。The design of PLL phaselocked loop ensures that external input signal is synchronization with internal oscillation signal, it is ensured that process the accurate of signal results。

Described hardware compression device is H.264 hardware compression device。

The model of described controller is BZ2046-T。

The model of described sdram interface controller is 46V16M16TG-75。This model interface controller all can transmit data at the rising and falling edges of clock, and the efficiency of transmission data is the twice of operating frequency, and work efficiency is high。

Compared with prior art, the beneficial effects of the utility model are:

1, the audio frequency of the video in this programme and number format carries out independent synchronous compression and decompression, the encoding and decoding of other data then utilize systematic encoder and system decoder to realize, the data needing encoding and decoding are made a distinction encoding and decoding, obtain bigger compression ratio and more can reduce file loss while small documents, compatible better, codec data is more accurate。

2, also setting up house dog terminal on a processor for monitoring the operation of mastery routine, it is prevented that the unconfined operation of program, cause endless loop, simultaneously when receiving and send data to the process accepting and sending time-out, protection data and circuit are from damage。

Accompanying drawing explanation

Fig. 1 is theory diagram of the present utility model。

Detailed description of the invention

Below in conjunction with accompanying drawing, this utility model being further elaborated, embodiment of the present utility model is not limited to this。

Embodiment 1:

As shown in Figure 1, this utility model includes sdram interface controller, controller and house dog terminal, described controller is connected on sdram interface controller, house dog terminal connects on the controller, and described sdram interface controller is also connected with hardware compression device, audio codec, systematic encoder, system decoder, audio input interface, audio output interface, video input interface and video output interface。

Sdram interface supervisor controls data on hardware compression device, audio codec, systematic encoder, system decoder, audio input interface and video input interface from internal memory loading/unloading, and the integrity of data is detected, the incoming controller of satisfactory data is processed, then the data after encoding and decoding is exported through video output interface or audio output interface。This codec utilize hardware compression device HD video (up to 1440 points × 1080 row) is carried out real-time compression and decompression, utilize audio codec that the audio frequency of Dolby number format is carried out synchronous compression and decompression, the encoding and decoding of other data then utilize systematic encoder and system decoder to realize, the data needing encoding and decoding are made a distinction encoding and decoding, obtain bigger compression ratio and more can reduce file loss while small documents, compatible better, codec data is more accurate。The sdram interface controller adopted in this programme is low energy-consumption electronic device, and compact dimensions, reduces the size of data encoder。Also setting up house dog terminal on a processor for monitoring the operation of mastery routine, it is prevented that the unconfined operation of program, cause endless loop, simultaneously when receiving and send data to the process accepting and sending time-out, protection data and circuit are from damage。

Embodiment 2:

The present embodiment is preferably as follows on the basis of embodiment 1: be also connected with Host interface on described sdram interface controller。

Described hardware compression device is H.264 hardware compression device。

The model of described controller is BZ2046-T。This model controller is low in energy consumption, working stability。

Just this utility model can be realized as mentioned above。

Claims

1. codec, it is characterized in that: include sdram interface controller, controller and house dog terminal, described controller is connected on sdram interface controller, house dog terminal connects on the controller, and described sdram interface controller is also connected with hardware compression device, audio codec, systematic encoder, system decoder, audio input interface, audio output interface, video input interface and video output interface。

2. codec according to claim 1, it is characterised in that: described sdram interface controller is also connected with Host interface。

3. codec according to claim 1, it is characterised in that: described controller is also connected with PLL phaselocked loop。

4. codec according to claim 1, it is characterised in that: described hardware compression device is H.264 hardware compression device。

5. codec according to claim 1, it is characterised in that: the model of described controller is BZ2046-T。

6. codec according to claim 1, it is characterised in that: the model of described sdram interface controller is 46V16M16TG-75。