CN100373925C - Portable digital video recorder - Google Patents
Portable digital video recorder Download PDFInfo
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- CN100373925C CN100373925C CNB2005100870566A CN200510087056A CN100373925C CN 100373925 C CN100373925 C CN 100373925C CN B2005100870566 A CNB2005100870566 A CN B2005100870566A CN 200510087056 A CN200510087056 A CN 200510087056A CN 100373925 C CN100373925 C CN 100373925C
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Abstract
An invention of portable digital video recorder relates to the digital video technology. The device includes a power module, input and output channels of cable television, AV input, a MCU controller, a HF head, a channel converter, an A/D video, an A/D audio, knobs, lights, an AV output, Soc chips, a flash memory, level converters, a hard disk memory, a DDR RAM register, a RTC+ regularly awaking device, a RTC backup power, an infrared receiver, an infrared remote control, a USB 2.0HS/OTG FS data conveyor and a power manager, which can realize recording function either the TV is on or off and play the recorded files on TV.
Description
Technical field
The present invention relates to digital video technology field, particularly portable digital video recorder.
Background technology
Existing traditional video tape recorder price height on the market, and the form of recording needs the equipment conversion of specialty not play on display etc. connects the equipment of traditional video tape recorder.
The digital video recorder of prior art just rises abroad, but all is defined as household appliances, and volume is bigger, be not easy to carry, and price is expensive.Some PMP products can be realized recording of TV programme, but all are to record by the output of television set, can not realize recording function under the situation of not opening television set.
Summary of the invention
In order to overcome above-mentioned the deficiencies in the prior art, the purpose of this invention is to provide a kind of portable digital video recorder.It television set open with closing state under can both realize recording function, and can be with the audio/video file recorded by televising, and have volume light and handy, be easy to carry and the characteristics of power-failure protecting.
In order to reach above-mentioned goal of the invention, technical scheme of the present invention realizes as follows:
A kind of portable digital video recorder, it comprises power module, cable TV input channel, cable TV output channel, AV input, MCU controller, tuner, channel converter, video a/d, audio A/D, button, indicator light, AV output, Soc chip, flash memory, level translator, harddisk memory, DDR ram register, RTC+ timing wake-up device, RTC backup battery, infrared remote receiver, Infrared remote controller, USB2.0HS/OTG FS data transmitter and OTG power supervisor.Its design feature is to provide the power module of electric energy respectively to Soc chip and connected each module loop power supply by power supply adaptor.The output of button and infrared remote receiver is connected respectively to the Soc chip, and indicator light links to each other with the Soc chip respectively with the input of AV output.MCU controller, video a/d, audio A/D, flash memory, level translator, DDR ram register, RTC+ timing wake-up device and USB2.0HS/OTG FS data transmitter interconnect with the Soc chip respectively.Harddisk memory and level translator interconnect; The output of RTC backup battery is connected to RTC+ timing wake-up device; The output of OTG power supervisor is connected respectively to USB2.OHS/OTG FS data transmitter and Soc chip.The cable TV input channel connects the input, channel converter of tuner successively to video a/d, and the output of tuner connects the cable TV output channel, and tuner and MCU controller interconnect.The AV input is connected to audio A/D by channel converter.
In above-mentioned video tape recorder, described power module produces 2.6V voltage respectively and supplies with DDR ram register, 1.8V voltage supply Soc chip core and RTC+ timing wake-up device, 3.3V voltage supply Soc chip and IO mouth and each peripheral module.Directly supply with harddisk memory, MCU controller and tuner by the 5V voltage that power supply adaptor produces.
In above-mentioned video tape recorder, the model of described Soc chip is ZR36451, is to include 32 cpu chip, carries out management and monitoring function and carries out the hardware compression of audio frequency and video.
In above-mentioned video tape recorder, it is the chip of the 16M position of K9F2808UOC-YCBO that described flash memory adopts model; It is the chip of SN74ALVC164245DGGT that described level translator adopts model; It is the chip of HTS424040M9AT00 that described harddisk memory adopts model; It is the chip of K4D551638F-TC50 that described DDR ram register adopts model; It is the chip of PCF8563T that described RTC+ timing wake-up device adopts model; It is the chip of STM-404SN that described infrared remote receiver adopts model; It is the chip of MNE2Y-5G5P10 that described USB2.OHS/OTG FS data transmitter adopts model; It is the chip of RT9702CB that described OTG power supervisor adopts model.
In above-mentioned video tape recorder, described video a/d is that the chip of TVP5150AMIPBSR carries out converting digital signal to after clutter filtering and the impedance matching with video analog signal and imports the Soc chip into by model.
In above-mentioned video tape recorder, described audio A/D is that the chip of CS5340-CZZ carries out the analog signal of L channel and R channel converting digital signal to behind the active power filtering respectively and imports the Soc chip into by model.
In above-mentioned video tape recorder, described button comprises that six function key rew/-, ff/+, play/pause, stop, menu and on/off are connected respectively to the Soc chip.
In above-mentioned video tape recorder, described indicator light comprises power supply indicator, records indicator light and plays indicator light.
The present invention can carry out manually or pre-recording cable television program by tuner owing to adopted above-mentioned structure, converts audio and video analog signal to digital signal and is stored in the big capacity hard disk memory.Do not influence during video recording other TV programme watched that pre-recording needn't be turned on television set.The SOC chip has high performance hardware compression characteristics, export high property make an uproar than audio-video signal, speed is fast and can not make mistakes than the product of software codec.The RTC backup battery makes the present invention can both finish the prerecording function smoothly within seven days having a power failure.The present invention simultaneously adopts multistage chip structure, makes its volume reduce, be easy to carry, and has good use value and ten minutes vast market prospect.
The present invention will be further described below in conjunction with the drawings and specific embodiments.
Description of drawings
Fig. 1 is an operation principle structure chart of the present invention;
Fig. 2 is the circuit theory diagrams of Soc chip of the present invention;
Fig. 3 is the circuit theory diagrams of power module of the present invention;
Fig. 4 is the circuit theory diagrams of channel converter of the present invention;
Fig. 5 is the circuit theory diagrams of video a/d of the present invention;
Fig. 6 is the circuit theory diagrams of audio A/D of the present invention;
Fig. 7 is the circuit theory diagrams of button of the present invention;
Fig. 8 is the circuit theory diagrams of AV output of the present invention;
Fig. 9 is the circuit theory diagrams of flash memory of the present invention;
Figure 10 is the circuit theory diagrams of level translator of the present invention;
Figure 11 is the circuit theory diagrams of harddisk memory of the present invention;
Figure 12 is the circuit theory diagrams of DDR ram register of the present invention;
Figure 13 is the circuit theory diagrams of RTC+ timing wake-up device of the present invention;
Figure 14 is the circuit theory diagrams of RTC backup battery of the present invention;
Figure 15 is the circuit theory diagrams of infrared remote receiver of the present invention;
Figure 16 is the circuit theory diagrams of USB2.0HS/OTG FS data transmitter of the present invention;
Figure 17 is the circuit theory diagrams of OTG power supervisor of the present invention.
Embodiment
Referring to Fig. 1 to Figure 17, the present invention includes power module 1, cable TV input channel 2, cable TV output channel 3, AV input 4, MCU controller 5, tuner 6, channel converter 7, video a/d 8, audio A/D9, button 10, indicator light 11, AV output 12, Soc chip 13, the chip model is the flash memory 14 of the 16M position of K9F2808UOC-YCBO, the chip model is the level translator 15 of SN74ALVC164245DGGT, the chip model is the harddisk memory 16 of HTS424040M9AT00, the chip model is the DDR ram register 17 of K4D551638F-TC50, the chip model is the RTC+ timing wake-up device 18 of PCF8563T, RTC backup battery 19, the chip model is the infrared remote receiver 20 of STM-404SN, Infrared remote controller 21, the chip model is the USB2.0HS/OTG FS data transmitter 22 of MNE2Y-5G5P10 and the OTG power supervisor 23 that the chip model is RT9702CB.Providing the power module 1 of electric energy to produce 2.6V voltage respectively by power supply adaptor supplies with DDR ram register 17,1.8V voltage supply Soc chip 13 kernels and RTC+ timing wake-up device 18,3.3V voltage supply Soc chip 13 and IO mouth and each peripheral module, directly supplies with harddisk memory 16, MCU controller 5 and tuner 6 by the 5V voltage that power supply adaptor produces.The output of button 10 and infrared remote receiver 20 is connected respectively to Soc chip 13, indicator light 11 links to each other with Soc chip 13. respectively with the input of AV output 12, and MCU controller 5, video a/d 8, audio A/D9, flash memory 14, level translator 15, DDR ram register 17, RTC+ timing wake-up device 18 and USB2.0HS/OTG FS data transmitter 22 interconnect with Soc chip 13 respectively.Harddisk memory 16 interconnects with level translator 15, and the output of RTC backup battery 19 is connected to RTC+ timing wake-up device 18, and the output of OTG power supervisor 23 is connected respectively to USB2.0HS/OTG FS data transmitter 22 and Soc chip 13.Input, channel converter 7 that cable TV input channel 2 connects tuner 6 successively arrive video a/d 8, and the output of tuner 6 connects cable TV output channel 3, and tuner 6 interconnects with MCU controller 5.AV input 4 is connected to audio A/D9 by channel converter 7.Cable TV input channel 2 connects wired TV outlet, cable TV output channel 3 links to each other with the cable TV input port of television set by the Active crossover device, AV input 4 is connected with the CVBS delivery outlet of VCD, DVD or DV, and AV exports the 12 AV input ports that are connected to television set.Video a/d 8 is that the chip of TVP5150AMIPBSR carries out converting digital signal to after clutter filtering and the impedance matching with video analog signal and imports Soc chip 13 into by model, and audio A/D9 is that the chip of CS5340-CZZ carries out the analog signal of L channel and R channel converting digital signal to behind the active power filtering respectively and imports Soc chip 13 into by model.Button 10 comprises that six function key rew/-, ff/+, play/pause, stop, menu and on/off are connected respectively to Soc chip 13.Indicator light 11 comprises power supply indicator, records indicator light and plays indicator light.The model of Soc chip 13 is ZR36451, is to include 32 cpu chip, carries out management and monitoring function and carries out the hardware compression of audio frequency and video.
During use, the present invention plugs the 5V adaptor power supplies, produces 3.3V voltage by power module 1 and supplies with Soc chip 13, is used as the power management of off-mode, this moment the clock failure of oscillation, power consumption is extremely low, complete machine is in treats wake-up states.Press the ON/OFF key on the video tape recorder, import the high level notice of the PWRON mouth on CPU start to the Soc chip 13, then the output of the PWRENB mouth on CPU high level opening power module 1 in the Soc chip 13.Power module 1 produces 2.6V voltage successively and supplies with DDR ram register 17,1.8V voltage supply Soc chip 13 kernels and RTC+ timing wake-up device 18,3.3V voltage supply Soc chip 13 and IO mouth and each peripheral module, clock starting of oscillation.
When image and sound program is carried out pre-recording, carry out the setting of pre-recording by video screen with Infrared remote controller 21, several time points that the plan of setting is recorded, the subsection corresponding document star inventory of pre-recording deposits flash memory 14 in, and Preset Time point is the earliest deposited in the register die of RTC+ timing wake-up device 18.After the shutdown, 19 pairs of RTC+ timing wake-up of RTC backup battery device 18 power supply can be kept the clock seven days of 32.768KHZ in the RTC+ timing wake-up device 18.RTC+ timing wake-up device 18 monitorings Preset Time point-to-point the earliest, produce and interrupt, give the notice of the PWRON mouth on CPU start in the Soc chip 13 by reverser Q8 biography high level wherein, video tape recorder is waken up, by system next Preset Time point is deposited in the register die of RTC+ timing wake-up device 18 simultaneously.Soc chip 13 is used I
2The C mode is chosen default channel by the operation of MCU controller 5 controls to tuner 6.Carry out passive filtering by 8 pairs of video analog signals of video a/d and eliminate noise and carry out impedance matching, convert video signal again to.By audio A/D9 audio analog signals is carried out active power filtering and eliminate noise, convert audio digital signals again to.Video signal after the conversion and audio digital signals input Soc chip 13 carries out the MPEG4 coding, and with metadata cache in DDR ram register 17.Because the supply power voltage of Soc chip 13 and harddisk memory 16 is respectively 3.3V and 5V, need deposit harddisk memory 16 in after the data wire level translation by level translator 15, and control signal need not level conversion and can directly deposit harddisk memory 16 in.
When playing image and sound program with the present invention, use 21 pairs of video tape recorders of Infrared remote controller to operate, after infrared remote receiver 20 is received useful signal, produce the string number pulse and give Soc chip 13, by the classification of the CPU decision operation in the Soc chip 13, and on video screen, select needed program.Soc chip 13 notice harddisk memories 16 are done buffer memory to data importing DDR ram register 17, and this process also need be changed by 15 pairs of data wire level of level translator.Carry out the MPEG4 decoding by 13 pairs of video signals of Soc chip and audio digital signals, convert video analog signal and stereophonic signal to by video a/d 8 and audio A/D9 respectively again, carry out the passive filtering filtering noise information by 12 pairs of signals of AV output, and carry out 75 ohm impedance matching assurance good signal output.
Claims (8)
1. portable digital video recorder, it comprises power module (1), cable TV input channel (2), cable TV output channel (3), AV imports (4), MCU controller (5), tuner (6), channel converter (7), video a/d (8), audio A/D (9), button (10), indicator light (11), AV exports (12), Soc chip (13), flash memory (14), level translator (15), harddisk memory (16), DDR ram register (17), RTC+ timing wake-up device (18), RTC backup battery (19), infrared remote receiver (20), Infrared remote controller (21), USB 2.0HS/OTG FS data transmitter (22) and OTG power supervisor (23), it is characterized in that, provide the power module (1) of electric energy to give Soc chip (13) and connected each module or loop power supply respectively by power supply adaptor, the output of button (10) and infrared remote receiver (20) is connected respectively to Soc chip (13), indicator light (11) links to each other with Soc chip (13) respectively with the input of AV output (12), MCU controller (5), video a/d (8), audio A/D (9), flash memory (14), level translator (15), DDR ram register (17), RTC+ timing wake-up device (18) and USB 2.0HS/OTG FS data transmitter (22) interconnect with Soc chip (13) respectively, harddisk memory (16) interconnects with level translator (15), the output of RTC backup battery (19) is connected to RTC+ timing wake-up device (18), the output of OTG power supervisor (23) is connected respectively to USB2.0HS/OTG FS data transmitter (22) and Soc chip (13), cable TV input channel (2) connects the input of tuner (6) successively, channel converter (7) is to video a/d (8), the output of tuner (6) connects cable TV output channel (3), tuner (6) interconnects with MCU controller (5), and AV input (4) is connected to audio A/D (9) by channel converter (7).
2. portable digital video recorder according to claim 1, it is characterized in that, described power module (1) produces 2.6V voltage respectively and supplies with DDR ram register (17), 1.8V voltage supply Soc chip (13) kernel and RTC+ timing wake-up device (18), 3.3V voltage supply Soc chip (13) and IO mouth and each peripheral module, directly supplies with harddisk memory (16), MCU controller (5) and tuner (6) by the 5V voltage that power supply adaptor produces.
3. portable digital video recorder according to claim 1 and 2 is characterized in that, the model of described Soc chip (13) is ZR36451, is to include 32 cpu chip, carries out management and monitoring function and carries out the hardware compression of audio frequency and video.
4. portable digital video recorder according to claim 3, it is characterized in that, it is the chip of the 16M position of K9F2808UOC-YCBO that described flash memory (14) adopts model, it is the chip of SN74ALVC164245DGGT that described level translator (15) adopts model, it is the chip of HTS424040M9ATOO that described harddisk memory (16) adopts model, it is the chip of K4D551638F-TC50 that described DDR ram register (17) adopts model, it is the chip of PCF8563T that described RTC+ timing wake-up device (18) adopts model, it is the chip of STM-404SN that described infrared remote receiver (20) adopts model, it is the chip of MNE2Y-5G5P10 that described USB 2.0HS/OTG FS data transmitter (22) adopts model, and it is the chip of RT9702CB that described OTG power supervisor (23) adopts model.
5. portable digital video recorder according to claim 4, it is characterized in that described video a/d (8) is that the chip of TVP5150AMIPBSR carries out converting digital signal to after clutter filtering and the impedance matching with video analog signal and imports Soc chip (13) into by model.
6. portable digital video recorder according to claim 5, it is characterized in that described audio A/D (9) is that the chip of CS5340-CZZ carries out the analog signal of L channel and R channel converting digital signal to behind the active power filtering respectively and imports Soc chip (13) into by model.
7. portable digital video recorder according to claim 6 is characterized in that, described button (10) comprises that six function key rew/-, ff/+, play/pause, stop, menu and on/off are connected respectively to Soc chip (13).
8. portable digital video recorder according to claim 7 is characterized in that, described indicator light (11) comprises power supply indicator, records indicator light and plays indicator light.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100870566A CN100373925C (en) | 2005-07-26 | 2005-07-26 | Portable digital video recorder |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005100870566A CN100373925C (en) | 2005-07-26 | 2005-07-26 | Portable digital video recorder |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1905628A CN1905628A (en) | 2007-01-31 |
| CN100373925C true CN100373925C (en) | 2008-03-05 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005100870566A Expired - Fee Related CN100373925C (en) | 2005-07-26 | 2005-07-26 | Portable digital video recorder |
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| Country | Link |
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| CN (1) | CN100373925C (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103647914A (en) * | 2013-11-29 | 2014-03-19 | 乐视致新电子科技（天津）有限公司 | Method and device for timed wake-up after television turning-off |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308485A (en) * | 2001-02-28 | 2001-08-15 | Tcl王牌电子(深圳)有限公司 | Acoustical unit for digital TV set |
| CN2473835Y (en) * | 2001-04-12 | 2002-01-23 | 济南创业信息技术发展有限公司 | Digital recording cassette |
| CN1553705A (en) * | 2003-05-29 | 2004-12-08 | 乐金电子（沈阳）有限公司 | Broadcast type signal storage device and method for personal video recorder system |
| CN2822068Y (en) * | 2005-07-26 | 2006-09-27 | 清华同方股份有限公司 | Portable digital video recorder |
-
2005
- 2005-07-26 CN CNB2005100870566A patent/CN100373925C/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1308485A (en) * | 2001-02-28 | 2001-08-15 | Tcl王牌电子(深圳)有限公司 | Acoustical unit for digital TV set |
| CN2473835Y (en) * | 2001-04-12 | 2002-01-23 | 济南创业信息技术发展有限公司 | Digital recording cassette |
| CN1553705A (en) * | 2003-05-29 | 2004-12-08 | 乐金电子（沈阳）有限公司 | Broadcast type signal storage device and method for personal video recorder system |
| CN2822068Y (en) * | 2005-07-26 | 2006-09-27 | 清华同方股份有限公司 | Portable digital video recorder |
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| Publication number | Publication date |
|---|---|
| CN1905628A (en) | 2007-01-31 |
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Granted publication date: 20080305 Termination date: 20170726 |