CN201266986Y - Device for digital compression video-recording and playback of audio and video - Google Patents
Device for digital compression video-recording and playback of audio and video Download PDFInfo
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- CN201266986Y CN201266986Y CN 200820190373 CN200820190373U CN201266986Y CN 201266986 Y CN201266986 Y CN 201266986Y CN 200820190373 CN200820190373 CN 200820190373 CN 200820190373 U CN200820190373 U CN 200820190373U CN 201266986 Y CN201266986 Y CN 201266986Y
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- 238000003860 storage Methods 0.000 description 6
- 238000004422 calculation algorithm Methods 0.000 description 5
- 239000002131 composite material Substances 0.000 description 5
- 230000000007 visual effect Effects 0.000 description 4
- 238000012545 processing Methods 0.000 description 3
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- 230000005540 biological transmission Effects 0.000 description 2
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- 238000013461 design Methods 0.000 description 2
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/4104—Peripherals receiving signals from specially adapted client devices
- H04N21/4122—Peripherals receiving signals from specially adapted client devices additional display device, e.g. video projector
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/41—Structure of client; Structure of client peripherals
- H04N21/426—Internal components of the client ; Characteristics thereof
- H04N21/42646—Internal components of the client ; Characteristics thereof for reading from or writing on a non-volatile solid state storage medium, e.g. DVD, CD-ROM
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/432—Content retrieval operation from a local storage medium, e.g. hard-disk
- H04N21/4325—Content retrieval operation from a local storage medium, e.g. hard-disk by playing back content from the storage medium
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/433—Content storage operation, e.g. storage operation in response to a pause request, caching operations
- H04N21/4334—Recording operations
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/44—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs
- H04N21/4402—Processing of video elementary streams, e.g. splicing a video clip retrieved from local storage with an incoming video stream or rendering scenes according to encoded video stream scene graphs involving reformatting operations of video signals for household redistribution, storage or real-time display
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/907—Television signal recording using static stores, e.g. storage tubes or semiconductor memories
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/80—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback
- H04N9/804—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components
- H04N9/8042—Transformation of the television signal for recording, e.g. modulation, frequency changing; Inverse transformation for playback involving pulse code modulation of the colour picture signal components involving data reduction
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N9/00—Details of colour television systems
- H04N9/79—Processing of colour television signals in connection with recording
- H04N9/87—Regeneration of colour television signals
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- Engineering & Computer Science (AREA)
- Multimedia (AREA)
- Signal Processing (AREA)
- Physics & Mathematics (AREA)
- Computer Hardware Design (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Databases & Information Systems (AREA)
- Television Signal Processing For Recording (AREA)
Abstract
The utility model relates to an audio and video digital compression videoing and playback device which is connected with a multi-channel video switching module by a high-frequency switching module; the multi-channel video switching module is connected with a digital audio/video coding/encoding and control module respectively by a video A/D switching module and an audio A/D and D/A module, the digital audio/video coding/decoding and control module is connected with a television or a PC by a video D/A module, and the digital audio/video coding/decoding and control module is provided with an SD card interface, an infrared interface, a USB interface, a keyboard, an SDRAM (Synchronized Dynamic Random Access Memory), a flash card, an LCD and a portable hard drive interface. The videoing and playback device can store cable television signals or audio/video signals broadcasted by a camera and a DVD player on an external portable hard drive or an SD card in the mode of digital compression coding, and when playing, the device can re-decode the compressed coding data in the portable hard drive or the SD card and convert the data into simulated audio/video signals for being played on the television or a computer monitor.
Description
Technical field
The utility model relates to a kind of audio frequency and video digital compression video recording and playback reproducer.
Background technology
Because traditional analog tape formula video tape recorder has been eliminated gradually, and the demand that people record TV signal still exists, as watches the 2008 Olympic Games program, records the contest show that can not in time watch.But it is considerably less that the video tape recorder of digital coding compression is adopted in the market at present, and price all more than 4,000 yuan, has seriously limited the development of this demand.The progress aspect having had three in the digital video field in recent years, the firstth, the compression of digital video algorithm is updated, and the digital compression rate is more and more higher, and picture quality is also become better and better.The secondth, market is used more and more wider, demand is more and clearer and more definite, the chip of carrying out compression algorithm also gradually by traditional DSP (digital signal processor) to integrated algorithm ASIC (Application Specific Intergrated Circuits is an application-specific integrated circuit (ASIC)), and higher SOC (System on Chip system level chip) the chip transition of the cost performance of Controlled CPU (Central Processing Unit/ central processing unit), since this class chip integrated the algorithm of compression and decompression, so do not need to resemble the algorithm software development cost of using both expensive the dsp chip, can significantly shorten the Time To Market of new product like this.The 3rd is the continuous progress along with memory technology, jumbo hard disk price continues to descend, the hard disk that can store the multitude of video data has dropped to ordinary consumer acceptable degree, in addition along with a large amount of of digital camera popularize, SD (SecureDigital Memory Card Security Digital (SD)) card is more and more, capacity is also increasing, has generally all adopted 1G or 2G, and this capacity can have been recorded 2-4 hour compressed video signal.Have benefited from the progress of this three aspect, just provide possibility for the digital video recording device enters family.
Summary of the invention
The utility model purpose provides a kind of audio frequency and video digital compression video recording and playback reproducer, the audio-video signal that this device can broadcast cable TV signal or video camera, DVD player, mode by the digital compression coding, be stored on external portable hard drive or the SD card, when playing, this device audio-video signal that converts simulation to of the compress coding data in the portable hard drive SD card can being decoded again plays back on TV or computer monitor.
A kind of audio frequency and video digital compression video recording and playback reproducer, this device is by the high frequency conversion module, the multi-channel video handover module, the video a/d modular converter, digital audio/video encoding and decoding and control module, audio A/D and D/A module, the video d/a module, the SD card, infrared interface, USB interface, keyboard, synchronous DRAM SDRAM, dodge card FLASH, LCD display, the portable hard drive interface is formed, it is characterized in that: the high frequency conversion module links to each other with the multi-channel video handover module, the multi-channel video handover module links to each other with digital audio/video encoding and decoding and control module with audio A/D and D/A module by the video a/d modular converter respectively, digital audio/video encoding and decoding and control module link to each other with television set or PC by the video d/a module, and digital audio/video encoding and decoding and control module are provided with the SD card, infrared interface, USB interface, keyboard, SDRAM, FLASH, LCD display, the portable hard drive interface.
Digital audio/video encoding and decoding and control module are made up of audio/video encoding/decoding, control chip and real time clock circuit as shown in Figure 2, and audio/video encoding/decoding links to each other with real time clock circuit with control chip respectively.
Described high frequency tuner circuit also is provided with cable television network (CATV) television antenna socket.
High frequency conversion module, multi-channel video handover module, video a/d modular converter, audio A/D and D/A module, video d/a module, SD card, infrared interface, USB interface, keyboard, SDRAM, FLASH, LCD display, portable hard drive interface all are to buy from the market to obtain.
Described high frequency tuner circuit is also established CATV net television antenna socket, the multi-channel video handover module is used for the vision signal of broadcasts such as household video camera or DVD is switched to the video a/d module, audio A/D and D/A module are used for converting the monophony or the stereo simulated audio signal of broadcasts such as television set, household video camera, DVD player to digital signal, and this device also comprises looks audio frequency input and output socket.
The SD card links to each other with the SD card that is used to store the audio/video coding packed data, and the portable hard drive interface is used for linking to each other with the external portable hard drive, and this hard disk also is to be used to store the audio frequency and video packed data.The user can select arbitrarily audio frequency and video digital compression storage on SD card or hard disk.
The method for designing that to be portable hard drive separate with digital coding compressing and converting circuit with the SD card because this device has adopted storage medium, the user just can decide the amount of capacity of selecting portable hard drive or SD card according to operating position and the economic condition of self, also can adopt used SD card on existing portable hard drive of script or the digital camera in addition, so just can significantly reduce cost, reduce expenses by the method for sharing storage resources.
This device not only can be recorded the online high-frequency TV program of CATV, can also pass through the multichannel handover module, the Voice ﹠ Video signal recording that household video camera or DVD player are played back on hard disk or SD card, and in needs by audio A/D and D/A module with video d/a modular converter 106 converts this audio-video signal to composite video signal CVBS (composite video broadcast singal full name: Composite Video Broadcast Signal or Composite Video Blanking andSync) or VGA (Video Graphics Array video graphics array) format signal plays back on TV or computer monitor again.
Can use the real time clock circuit (RTC) of digital audio/video encoding and decoding and control module 104 inside to finish the function of timing start-up video recording, timed power on/off, compare traditional design and saved external real time clock circuit, reduce volume, simplified circuit, saved cost.
Can access to LAN by the network interface on this device,, also the audio, video data that records can be uploaded in the network in this device and exist in hard disk or the SD card by the network download video data.By using the USB interface on this device, the user can receive on PC or the notebook computer, thereby downloads audio, video data or other data from these equipment, also can upload the audio, video data that records in PC.
Since the employing of digital audio/video encoding and decoding and control module brand-new with coding and decoding video ASIC and Controlled CPU and its real time clock circuit, make compare with conventional method have multiple functional, rich interface, design succinctly, the characteristics of cost savings.
Adopted LCD display and Infrared remote controller, this remote controller is finished controlled function by the infrared interface on this device, makes the control interface friendly more, operates also more convenient.For the ease of local operation, also be furnished with on this device and also all adopt the Chinese prompt menu on supervisory keyboard and the LCD display in addition.
Description of drawings
The schematic diagram that Fig. 1 uses for the utility model.
Fig. 2 is the schematic diagram of digital audio/video encoding and decoding and control module.
Embodiment
The utility model will be further described in conjunction with the accompanying drawings.
A kind of audio frequency and video digital compression video recording and playback reproducer, this device is by high frequency conversion module 101, multi-channel video handover module 102, video a/d modular converter 103, digital audio/video encoding and decoding and control module 104, audio A/D and D/A module 105, video d/a module 106, SD card 107, infrared interface 108, usb 1 10, keyboard 111, synchronous DRAM SDRAM112, dodge card FLASH113, LCD display 114, portable hard drive interface 115 is formed, it is characterized in that: high frequency conversion module 101 links to each other with multi-channel video handover module 102, multi-channel video handover module 102 links to each other with digital audio/video encoding and decoding and control module 104 with audio A/D and D/A module 105 by video a/d modular converter 103 respectively, digital audio/video encoding and decoding and control module 104 link to each other with television set or PC by video d/a module 106, digital audio/video encoding and decoding and control module 104 are provided with SD card 107, infrared interface 108, usb 1 10, keyboard 111, SDRAM112, FLASH113, LCD display 114, portable hard drive interface 115.
Digital audio/video encoding and decoding and control module 104 are as shown in Figure 2, form by audio/video encoding/decoding, control chip and real time clock circuit, control chip links to each other with real time clock circuit with audio/video encoding/decoding respectively, and portable hard drive interface, IIS interface, too network interface, USB interface, SD card, infrared interface, SDRAM NORFLASH interface, digital visual interface, lcd controller are installed on the control chip.
Look encoding and decoding and the explanation of control module internal circuit operation principle about digital sound:
1, control chip adopts the CPU of ARM926 nuclear to finish the function of control, conversion and the communication of signal.
2, the portable hard drive interface adopts ata interface, and ata interface is used to connect hard disk.
3, the IIS interface is used with the A/D D/A module of the audio frequency of outside and is connected, and finishes the analog to digital of audio frequency and the conversion of signals of digital to analogy.
4, Ethernet interface is used to connect computer network, by Network Transmission audio frequency and video compressed signal.
5, USB interface is used to connect USB interface of computer, by USB interface transmission tone video compression signal to computer.Also connect USB flash disk in addition, the audio frequency and video compressed signal is existed on the USB flash disk, store by USB flash disk again or certificate reciprocal by USB interface.
6, the SD card is used for external SD card, the audio frequency and video compressed signal is existed on the SD card or plays audio-video frequency content in the SD card.
7, infrared interface is used for and hand-held Infrared remote controller communication, accepts the control signal of Infrared remote controller.
8, SDRAM NORFLASH interface is used for linking to each other with the SDRAM or the FLASH of outside, carries out data and program and reads and handle.
9, audio/video encoding/decoding adopt H.263, H.264, MPEG4 encoding and decoding coprocessor, 3 kinds of compression algorithms that the digital video signal that the encoding and decoding coprocessor will read from camera interface is selected according to the client any compresses processing, or the compressed good data that will read from storage mediums such as hard disk, SD card are separated again and are pressed into normal video data, output to video d/a module 106, convert to VIDEO or VGA power supply look 500 or monitor 600 show.
10, digital visual interface adopts CCIR656 (international digital visual interface standard) digital visual interface to be used for and video a/d module 103, and video d/a module 106 links to each other, and finishes the conversion work of the input and output of analog video signal.
11, lcd controller is used to connect LCD display 114, and the information of finishing shows the function of picture browsing.
12, the RTC real time clock circuit is used to finish the clocking capability of date Hour Minute Second, makes this device can finish timed power on/off, functions such as timing video recording
High frequency conversion module, multi-channel video handover module, video a/d modular converter, audio A/D and D/A module, video d/a module, SD card, infrared interface, USB interface, keyboard, SDRAM, FLASH, LCD display, portable hard drive interface all are to buy from the market to obtain.
As shown in Figure 1, the high-frequency TV signal of cable television network 300 outputs converts audio-video signal to by high frequency tuner circuit 101 and sends into multichannel handover module 102, the audio-video signal 400 of external video camera or DVD player or TV output also is input in this multichannel handover module 102, the audio-video signal that the user selects to need is as required sent into the digital translation that audio A/DD/A module 105 and video a/d module 103 are carried out audio frequency and video, the digital audio-video signal that conversion is good enters the encoding compression that digital audio/video encoding and decoding and control module 104 are finished audio-video signal, by portable hard drive interface module 115 data of encoding compression are passed to storage in the external portable hard drive 200 then, also can the data of encoding compression be passed to 700 storages of external SD card in addition by SD card 107.
When playback, digital audio/video encoding and decoding and control module 104 are read the data of audio/video coding compression from portable hard drive 200 or SD card 700, finish the decoding of audio, video data calculates in inside, the audio, video data that decoding is come out is sent in audio A/DD/A module 105 and the video d/a module 106 then, audio A/DD/A module 105 is sent monophony or stereophonic signal that audio digital signals converts simulation to into television set 500 broadcasts, and video d/a module 106 converts video signal the PAL of simulation to or the composite video signal CVBS of NTSC form sends into television set 500 demonstrations, and video d/a module 106 also can convert video signal to the VGA signal and send into 600 demonstrations of PC monitor in addition.
Digital audio/video encoding and decoding and control module 104 can link to each other with PC by usb 1 09, are used to upload or download the audio frequency and video packed data.Also can pass through network interface in addition, be connected on the local area network (LAN) 1000, be convenient to network on other computers or server carry out exchanges data.
For the ease of operation, this device 100 has designed Keysheet module 111, is provided with start, shutdown, and buttons such as clock setting are play in video recording.Also be equipped with Infrared remote controller 800 for the ease of Long-distance Control in addition, this Infrared remote controller 800 by the infrared interface on this device 100 108 control signal is sent into the digital audio/video encoding and decoding and control module 104 is finished control operation.This device 100 can also use clock RTC in digital audio/video encoding and decoding and the control module 104, finishes the function of timing start-up video recording.
The program of this device 100 leaves among the FLASH113, and program running and video data buffer are SDRAM112, and operation interface shows the LCD display 114 that adopts Chinese.
Claims (3)
1, a kind of audio frequency and video digital compression video recording and playback reproducer, this device is by high frequency conversion module (101), multi-channel video handover module (102), video a/d modular converter (103), digital audio/video encoding and decoding and control module (104), audio A/D and D/A module (105), video d/a module (106), SD card (107), infrared interface (108), USB interface (110), Keysheet module (111), SDRAM (112), FLASH (113), LCD display (114), portable hard drive interface module (115) is formed, it is characterized in that: high frequency conversion module (101) links to each other with multi-channel video handover module (102), multi-channel video handover module (102) links to each other with digital audio/video encoding and decoding and control module (104) with audio A/D and D/A module (105) by video a/d modular converter (103) respectively, digital audio/video encoding and decoding and control module (104) link to each other with television set or PC by video d/a module (106), and digital audio/video encoding and decoding and control module (104) are provided with SD card (107), infrared interface (108), USB interface (110), keyboard (111), synchronous DRAM SDRAM (112), dodge card FLASH (113), LCD display (114), portable hard drive interface (115).
2, audio frequency and video digital compression video recording according to claim 1 and playback reproducer, it is characterized in that: digital audio/video encoding and decoding and control module (104) are made up of audio/video encoding/decoding, control chip and real time clock circuit, and control chip links to each other with real time clock circuit with audio/video encoding/decoding respectively.
3, audio frequency and video digital compression video recording according to claim 1 and playback reproducer, it is characterized in that: described high frequency tuner circuit also is provided with cable TV CATV net television antenna socket.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820190373 CN201266986Y (en) | 2008-08-19 | 2008-08-19 | Device for digital compression video-recording and playback of audio and video |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200820190373 CN201266986Y (en) | 2008-08-19 | 2008-08-19 | Device for digital compression video-recording and playback of audio and video |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201266986Y true CN201266986Y (en) | 2009-07-01 |
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ID=40833357
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200820190373 Expired - Lifetime CN201266986Y (en) | 2008-08-19 | 2008-08-19 | Device for digital compression video-recording and playback of audio and video |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201266986Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836965A (en) * | 2015-06-16 | 2015-08-12 | 深圳市邦彦信息技术有限公司 | FPGA-based video synchronous switching system and method |
| CN113632495A (en) * | 2019-03-08 | 2021-11-09 | 脸谱科技有限责任公司 | System and method for dynamic scheduling |
-
2008
- 2008-08-19 CN CN 200820190373 patent/CN201266986Y/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104836965A (en) * | 2015-06-16 | 2015-08-12 | 深圳市邦彦信息技术有限公司 | FPGA-based video synchronous switching system and method |
| CN104836965B (en) * | 2015-06-16 | 2018-02-23 | 邦彦技术股份有限公司 | FPGA-based video synchronous switching system and method |
| CN113632495A (en) * | 2019-03-08 | 2021-11-09 | 脸谱科技有限责任公司 | System and method for dynamic scheduling |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: Luoyu Road, Hubei province Wuhan city Hongshan District No. 424 Hongshan science and technology venture building, 3 floor, zip code: 430079 Patentee after: Wuhan P&S Information Technology Co., Ltd. Address before: Luoyu Road, Hubei province Wuhan city Hongshan District No. 424 Hongshan science and technology venture building, 3 floor, zip code: 430079 Patentee before: Wuhan P&S Information Technology Co., Ltd. |
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| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20090701 |