CN201114506Y - A digital audio and video multimedia built-in device - Google Patents
A digital audio and video multimedia built-in device Download PDFInfo
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- CN201114506Y CN201114506Y CNU2007201219399U CN200720121939U CN201114506Y CN 201114506 Y CN201114506 Y CN 201114506Y CN U2007201219399 U CNU2007201219399 U CN U2007201219399U CN 200720121939 U CN200720121939 U CN 200720121939U CN 201114506 Y CN201114506 Y CN 201114506Y
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Abstract
The utility model relates to a digital audio and video multimedia embedding device which comprises a main processing chip (6) arranged at a circuit board, a video decoder (5) connected with the main processing chip (6), an audio decoder (7), an MCU (3), a flash memory (8) and a portable neck (9) for a memory card; the video decoder is provided with two video input interfaces; the audio decoder is provided with two audio input interfaces; the MCU (3) is connected with an interface device (2) used for controlling the input of signals, a real-time clock module (4) and a power module (1). The digital audio and video multimedia embedding device of the utility model has low cost, convenience for being carried about, flexible allocation of functions, short period of production development and a system with easy modification and expansion.
Description
Technical field
The utility model relates to a kind of digital audio/video multimedia equipment, particularly a kind of with portable multimedia storage card as storage medium, employing can be reduced, the digital audio/video multimedia equipment of configurable embedded OS.
Background technology
At present digital multimedia device on the market is many, but because problem such as most micro harddisks that use, cause that product cost is higher, portability is poor, the construction cycle is long as storage medium, system's alterability, expandability are relatively poor.
The utility model content
Be deficiencies such as the above-mentioned cost height that overcomes present digital audio/video multimedia equipment, portable difference, the utility model is designed a kind of use portable memory card as storage medium, and on software, use can reduce very flexibly, the digital audio/video multimedia embedded equipment of configurable embedded OS.
The technical scheme that its technical problem that solves the utility model adopts is: construct a kind of digital audio/video multimedia embedded equipment, it is characterized in that, comprise main process chip that is arranged on the circuit board and Video Decoder, audio codec, single-chip microcomputer, flash memories and the portable memory card draw-in groove that links to each other with described main process chip; Described Video Decoder has two video input interfaces; Described audio codec has two audio input interfaces; Described single-chip microcomputer is connected with control signal input interface unit, real-time clock module and power module.
In digital audio/video multimedia embedded equipment described in the utility model, described control signal input interface unit comprises infrared remote control receiver.
In digital audio/video multimedia embedded equipment described in the utility model, described control signal input interface unit comprises key circuit.
In digital audio/video multimedia embedded equipment described in the utility model, described main process chip is connected with video encoder, and described video encoder has video output interface, and described audio codec also has audio output interface.
In digital audio/video multimedia embedded equipment described in the utility model, the MPEG2 decoder that also comprise the DVD player core, links to each other, VFD display screen, DVD power module, video simulation switch and audio frequency and video simulation hybrid switch with movement; First video input interface of described Video Decoder (5) is connected with the camera video input interface with the television video input interface by the video simulation switch, and second video input interface links to each other with the video output interface of described MPEG2 decoder; The first audio input interface external audio frequency input unit of described audio codec, second audio input interface links to each other with the audio output interface of MPEG2 decoder; The audio frequency output of the video output of described MPEG2 decoder and video encoder, described MPEG2 decoder and audio codec links to each other with the external audio frequency output interface with external video output interface by audio frequency and video simulation hybrid switch respectively; Described single-chip microcomputer links to each other with described MPEG2 decoder, VFD display screen, DVD power module, video simulation switch and audio frequency and video simulation hybrid switch, and described infrared remote control receiver also links to each other with the MPEG2 decoder.
In digital audio/video multimedia embedded equipment described in the utility model, also comprise the digital tuner, demodulator, MPEG2 decoder, VFD display screen, DTV power module, video simulation switch and the audio frequency and video simulation hybrid switch that are used for tuning DTV signal; First video input interface of described Video Decoder is connected with external video input interface, and second video input interface links to each other with the video output interface of described MPEG2 decoder; First audio input interface of described audio codec links to each other with the external audio frequency input interface, and second audio input interface links to each other with the audio output interface of MPEG2 decoder; The video output of described MPEG2 decoder and video encoder links to each other with external video output interface by the video simulation switch, and described MPEG2 decoder links to each other with the external audio frequency output interface by audio frequency and video simulation hybrid switch with the audio frequency output of audio codec; Described single-chip microcomputer links to each other with MPEG2 decoder, VFD display screen, DTV power module, video simulation switch and audio frequency and video simulation hybrid switch.
In digital audio/video multimedia embedded equipment described in the utility model, described main process chip also is connected with the GPS receiver module.
In digital audio/video multimedia embedded equipment described in the utility model, described primary processor is connected with camera and LCDs; Described audio codec also is connected with FM radio receiver module and microphone.
In digital audio/video multimedia embedded equipment described in the utility model, described main process chip also is connected with the GPS receiver module.
In digital audio/video multimedia embedded equipment described in the utility model, described power module also is connected with the lithium cell charging administration module.
Implement digital audio/video multimedia embedded equipment of the present utility model, have following beneficial effect: owing to use portable memory card as storage medium, digital audio/video multimedia embedded equipment cost of the present utility model is low, be convenient for carrying.And since used can reduce, configurable embedded OS, but flexible configuration on the function, product development cycle is short, system is easy to revise, expand.
Description of drawings
The utility model is described in further detail below in conjunction with drawings and Examples, in the accompanying drawing:
Fig. 1 is the theory diagram of the utility model digital audio/video multimedia embedded equipment first embodiment;
Fig. 2 is the theory diagram of the utility model digital audio/video multimedia embedded equipment second embodiment;
Fig. 3 is the theory diagram of the utility model digital audio/video multimedia embedded equipment the 3rd embodiment;
Fig. 4 is the theory diagram of the utility model digital audio/video multimedia embedded equipment the 4th embodiment;
Fig. 5 is the theory diagram of the utility model digital audio/video multimedia embedded equipment the 5th embodiment.
Embodiment
As shown in Figure 1, first embodiment of the utility model digital audio/video multimedia embedded equipment can be used as a kind of small-sized digital video recordings device.
Present embodiment has solved portable multimedia broadcastings such as mobile phone, PMP, MP4 and has put problems such as the shortage of equipment program source, program real-time deficiency.Storage format with multimedia playing apparatus such as mobile phone, PMP, MP4 the multimedia programming source format 3GP/MP4 that extensively adopts, and with the widely used portable memory card of above-mentioned many matchmakers playing device institute as storage medium.
In the present embodiment, adopt special-purpose Video Decoder 5, audio codec 7, single-chip microcomputer 3, main process chip 6 at hardware aspect, and be storage medium with the portable memory card, aspect software, adopt the embedded OS that to reduce configuration flexibly, on video compression format, adopt MPEG-4/H.263, on the audio coding form, adopt the AAC/AMR form, and the audio-video document that will compress after synthesizing is kept on the portable memory card.
In the present embodiment, small-sized digital video recordings device is small and exquisite flexibly, can use TV, DVD, video tape recorder at any time, lay the first-class audio frequency and video output equipment of shooting as program source, carries out recording of multimedia file.Has the simplest video record function.Volume is little, and board area has only 20 square centimeters.Function singleness has video format and selects 3GP/MP4, and resolution is selected two kinds of 320X240/176X144.Can operate by remote controller, also can control by button.
Comprise the power module 1, the infrared remote control receiver 2 that are arranged on the circuit board among Fig. 1, single-chip microcomputer 3, real-time clock module 4, Video Decoder 5, main process chip 6, audio codec 7, flash memories 8, storage card draw-in groove 9, and video input interface and audio input interface etc.Wherein, main process chip 6 links to each other with Video Decoder 5, audio codec 7, single-chip microcomputer 3, flash memories 8 and portable memory card draw-in groove 9 respectively.Single-chip microcomputer 3 also links to each other with infrared remote control receiver 2, real-time clock module 4 and power module 1.Video Decoder 5 has two video input interfaces; Described audio codec 7 has two audio input interfaces.It should be noted that except that infrared remote control receiver 2 single-chip microcomputer 3 can also connect key circuit as the control signal input interface unit.
Below divide several sections that the operation principle of the small-sized digital video recordings device of present embodiment is described.
First's system boot
During system boot, accept the start-up command that remote controller sends by infrared remote control receiver 2, by 1 power supply of single-chip microcomputer 3 control power modules, the main process chip 6 of single-chip microcomputer 3 controls reads main process chip 6 inside with the embedded OS of flash memory reservoir 8 stored, and the time parameters that store in the real-time clock module 4 are read embedded OS inside, as system's real-time clock, finish starting up's process of system.
The second portion audio frequency and video are recorded, synthetic and storage
When using recording function, the two-path video signal is under the selection of Video Decoder 5, the one road decoded digital video signal that converts the ITU-601 form to wherein, go forward side by side and become owner of process chip 6, under the control of Embedded Operating System software, carry out encoding compression with MPEG-4 or coded format H.263.
Simultaneously, the two-way audio input signal of input selects corresponding with vision signal a road to decode and analog-to-digital conversion through audio codec 7, and import main process chip 6, compress with AAC or AMR compressed encoding form, and with synthetic through the video file of encoding compression after, be stored among the portable memory card in the storage card draw-in groove 9 with suffix * .mp4 by name or * .3GP.
Figure 2 shows that second embodiment of the utility model digital audio/video multimedia embedded equipment.Adopt the digital audio/video multimedia embedded equipment of present embodiment can realize that portable multimedia broadcastings such as mobile phone, PMP, MP4, digital camera put the program interaction of parlor audio-visual devices such as equipment and TV, sound equipment, DVD, video tape recorder, set-top box.By identical storage medium, the shared use of portable multimedia storage card just, can be with mobile phone, PMP, MP4, the program source that equipment obtained such as digital camera, such as picture shot, the multimedia short-movie, e-book, MP3 music etc. is play on TV by this equipment, also can be by the recording function of this equipment, with TV, DVD, CD Player, video tape recorder, equipment such as set-top box are recorded on the portable memory card by the program source that intrinsic approach obtains, and are implemented in mobile phone, PMP, MP4, portable multimedia broadcastings such as digital camera are put the broadcast on the equipment.
The digital audio/video multimedia embedded equipment of present embodiment adopts special-purpose Video Decoder, audio codec, video encoder, main process chip at hardware aspect, and with portable memory card as storage medium, aspect software, adopt the embedded OS that to reduce configuration flexibly, on video compression format, adopt MPEG-4/H.263, on the audio coding form, adopt the AAC/AMR form, and the audio-video document that will compress after synthesizing is kept on the portable memory card.Aspect picture decoding, use special-purpose JPG decoding software; Aspect music, use high efficiency software decode mode.
The digital audio/video multimedia embedded equipment of present embodiment has two-way audio frequency and video inputs, one tunnel audio frequency and video output, and can play the JPG picture, txt e-book, and the music of MP3, WAV, forms such as AMR, WMA, the multimedia video of forms such as 3GP, MP4.Also can have functions such as perpetual calendar, timing start-up, timed recording.
Comprise the power module 1, infrared remote control receiver 2, single-chip microcomputer 3, real-time clock module 4, Video Decoder 5, main process chip 6, audio codec 7, flash memories 8, storage card draw-in groove 9, the video encoder 10 that are arranged on the circuit board among Fig. 2.Wherein, main process chip 6 links to each other with Video Decoder 5, audio codec 7, single-chip microcomputer 3, flash memories 8 and portable memory card draw-in groove 9 respectively.Single-chip microcomputer 3 also links to each other with infrared remote control receiver 2, real-time clock module 4 and power module 1.Video Decoder 5 has two video input interfaces; Described audio codec 7 has two audio input interfaces.It should be noted that except that infrared remote control receiver 2 single-chip microcomputer 3 can also connect key circuit as the control signal input interface unit.Video encoder 10 is connected to main process chip 6, and has video output interface.Audio codec 7 has audio output interface.
Below divide several sections that the operation principle of the digital audio/video multimedia embedded equipment of present embodiment is described.
First's system boot
During system boot, accept the start-up command that remote controller sends by infrared remote control receiver 2, by 1 power supply of single-chip microcomputer 3 control power modules, the main process chip 6 of single-chip microcomputer 3 controls reads main process chip 6 inside with the embedded OS of flash memory reservoir 8 stored, and the time parameters that store in the real-time clock module 4 are read embedded OS inside, as system's real-time clock, finish starting up's process of system.
The second portion audio frequency and video are recorded, synthesize, are stored and " ring goes into to encircle out "
When using recording function, the two-path video signal is under the selection of Video Decoder 5, the one road decoded digital video signal that converts the ITU-601 form to wherein, go forward side by side and become owner of process chip 6, under the control of Embedded Operating System software, carry out encoding compression with MPEG-4 or coded format H.263.
Simultaneously, the two-way audio input signal of input selects corresponding with vision signal a road to decode and analog-to-digital conversion through audio codec 7, and import main process chip 6, compress with AAC or AMR compressed encoding form, and with synthetic through the video file of encoding compression after, be stored among the portable memory card in the storage card draw-in groove 9 with suffix * .mp4 by name or * .3GP.
In the whole recording process, the digital video signal that is input to main process chip 6 will be outputed to video encoder 10 with the ITU-601 form by main process chip 6, and be encoded into analog video signal with input video decoder 5 same format by video encoder 10, export on the playback equipments such as TV.
Simultaneously, the audio signal of being selected by audio codec 7 will be used as audio output signal in audio codec 7 inside and output on the playback equipments such as TV.Thereby be implemented in whole recording process and do not influence the function of both having watched " ring goes into to encircle out ".
The third part multimedia file is play
When using the multimedia file playing function, the 3GP/MP4 file in the portable memory card is decoded by the inner integrated multimedia player of embedded OS by main process chip 6.Picture signal will export on the video encoder 10 with ITU-601 signal format, and video encoder 10 will be encoded and exports analog video signal and play to equipment such as TV with the analog video signal form that the user selectes; Voice signal will output on the audio codec by the IIS bus, play through outputing to simulated audio signal after the digital-to-analogue conversion on the equipment such as TV.
The 4th part picture playing
When using picture playing, by main process chip 6 the JPG picture in the portable memory card is decoded by the inner integrated picture playing software of embedded OS, and export on the video encoder 10 with ITU-601 signal format, video encoder 10 will be encoded and exports analog video signal and play to equipment such as TV with the analog video signal form that the user selectes.
The 5th part music
When using music playback function, by main process chip 6 music file in the portable memory card is decoded by the inner integrated music software of embedded OS, and export on the audio codec 7,7 pairs of data of audio codec carry out exporting in the analogue audio frequency mode after the digital-to-analogue conversion.
The 6th portions of electronics book is play
But when using e-book to play, the e-book TXT file in the portable memory card is decoded by the inner integrated text playout software of embedded OS by main process chip 6.
The 7th part perpetual calendar
When using the perpetual calendar function, by main process chip 6 clock data of real-time clock module 4 stored is carried out time editing by the inner integrated time editing software of embedded OS, and image informations such as editing interface are exported on the video encoder 10 with the ITU-601 form by main process chip 6.
The implementation method of the 8th part timing start-up, timed recording, timing play function
It should be noted that: in the time of the 4th part picture playing, the 5th part music, the broadcast of the 6th portions of electronics book, the 7th part perpetual calendar, the 8th part timing start-up, timed recording, the realization of timing play function five partial functions, main process chip 6 all can export image signals corresponding on the video encoder 10 to the ITU-601 form, and video encoder 10 can will be exported to display devices such as TV through the analog picture signal of digital-to-analogue conversion.
Figure 3 shows that the 3rd embodiment of the utility model digital audio/video multimedia embedded equipment, it is the embedded multimedia system of band DVD function.Present embodiment is to have integrated the DVD player function on the basis of the second embodiment digital audio/video multimedia embedded equipment.
The embedded multimedia system of the band DVD function of the 3rd embodiment of the present utility model has the repertoire of the second embodiment digital multimedia embedded equipment, and has a kind of additional function that increases newly, can realize the recording function of the level MTV of family.
Comprise the power module 1, infrared remote control receiver 2, single-chip microcomputer 3, real-time clock module 4, Video Decoder 5, main process chip 6, audio codec 7, flash memories 8, storage card draw-in groove 9, video encoder 10, video simulation switch 11, audio frequency and video simulation hybrid switch 12 and the MPEG2 decoder 13 that are arranged on the circuit board among Fig. 3.Wherein, main process chip 6 links to each other with Video Decoder 5, audio codec 7, single-chip microcomputer 3, flash memories 8 and portable memory card draw-in groove 9 respectively.Single-chip microcomputer 3 also links to each other with infrared remote control receiver 2, real-time clock module 4 and power module 1.Video Decoder 5 has two video input interfaces; Described audio codec 7 has two audio input interfaces.It should be noted that except that infrared remote control receiver 2 single-chip microcomputer 3 can also connect key circuit as the control signal input interface unit.Video encoder 10 is connected to main process chip 6, and has video output interface.Audio codec 7 has audio output interface.First video input interface of Video Decoder 5 is connected with the camera video input interface with the television video input interface by video simulation switch 11, and second video input interface links to each other with the video output interface of MPEG2 decoder 13.The first audio input interface external audio frequency input unit of audio codec 7, second audio input interface links to each other with the audio output interface of MPEG2 decoder 13.The audio frequency output of video output, MPEG2 decoder 13 and the audio codec 7 of MPEG2 decoder 13 and video encoder 10 links to each other with the external audio frequency output interface with external video output interface by audio frequency and video simulation hybrid switch 12 respectively.Described single-chip microcomputer 3 links to each other with MPEG2 decoder 13, VFD display screen, DVD power module, video simulation switch 11 and audio frequency and video simulation hybrid switch 12, and infrared remote control receiver 2 also links to each other with MPEG2 decoder 13.
In the present embodiment, first's system boot, second portion audio frequency and video are recorded, synthesized, store with " ring goes into to encircle out ", the broadcast of third part multimedia file, the 4th part picture playing, the 5th part music, the broadcast of the 6th portions of electronics book, the 7th part perpetual calendar, the 8th part timing start-up, timed recording, the implementation method of timing play function and the method in the second embodiment digital multimedia embedded equipment is consistent, does not repeat them here.In addition, playing function that DVD itself is had and native system are irrelevant, so function is not described at this yet.
Below the implementation method of Session 9 MTV function is described.At this moment, Video Decoder 5 can be selected being decoded by the captured analog video signal of camera of video simulation switch 11 inputs, and audio codec 7 can be selected being decoded by the simulated audio signal of DVD input, in main process chip inside, coding audio signal, compression, synthetic, the storage that can come to the vision signal and the DVD of outside camera.We are when this special DVD of use plays Karaoka amusement like this, and just the singer's that camera is obtained image reaches the synthetic complete multimedia document of sound by the singer of DVD microphone output, realizes recording of MTV.When realizing MTV, can be by control audio frequency and video simulation hybrid switch 12, with the image of DVD complete machine output the ring that the image of the DVD video disc that the inside of DVD MPEG2 decoder 13 is exported and simulation camera are exported by video simulation switch 11, Video Decoder 5, main process chip 5, video encoder 10 go into ring publish picture as between select.Thereby guarantee that the singer does not influence the function of watching the lyrics on TV when taking MTV.
Figure 4 shows that the utility model digital audio/video multimedia embedded equipment the 4th embodiment, its for the band digital television function the digital multimedia embedded equipment.Present embodiment is to have integrated portable mobile digital TV function on the basis of the second embodiment digital multimedia embedded equipment.
The digital multimedia embedded equipment of the band digital television function of the utility model the 4th embodiment has the repertoire of the second embodiment digital audio/video multimedia embedded equipment, and has a kind of additional function that increases newly, i.e. the global positioning satellite navigation feature of mobile digital TV.
Comprise the power module 1, infrared remote control receiver 2, single-chip microcomputer 3, real-time clock module 4, Video Decoder 5, main process chip 6, audio codec 7, flash memories 8, storage card draw-in groove 9, video encoder 10, video simulation switch 11, audio frequency and video simulation hybrid switch 12, MPEG2 decoder 13, the GPS receiver module 14 that are arranged on the circuit board among Fig. 4.Wherein, main process chip 6 links to each other with Video Decoder 5, audio codec 7, single-chip microcomputer 3, flash memories 8 and portable memory card draw-in groove 9 respectively.Single-chip microcomputer 3 also links to each other with infrared remote control receiver 2, real-time clock module 4 and power module 1.Video Decoder 5 has two video input interfaces; Described audio codec 7 has two audio input interfaces.It should be noted that except that infrared remote control receiver 2 single-chip microcomputer 3 can also connect key circuit as the control signal input interface unit.Video encoder 10 is connected to main process chip 6, and has video output interface.Audio codec 7 has audio output interface.First video input interface of Video Decoder 5 is connected with external video input interface, and second video input interface links to each other with the video output interface of described MPEG2 decoder 13.First audio input interface of audio codec 7 links to each other with the external audio frequency input interface, and second audio input interface links to each other with the audio output interface of MPEG2 decoder 13.The video output of MPEG2 decoder 13 and video encoder 10 links to each other with external video output interface by video simulation switch 11.MPEG2 decoder 13 links to each other with the external audio frequency output interface by audio frequency and video simulation hybrid switch 12 with the audio frequency output of audio codec 7.Single-chip microcomputer 3 links to each other with MPEG2 decoder 13, VFD display screen, DTV power module, video simulation switch 11 and audio frequency and video simulation hybrid switch 12.
In the present embodiment, first's system boot, second portion audio frequency and video are recorded, synthesized, store with " ring goes into to encircle out ", the broadcast of third part multimedia file, the 4th part picture playing, the 5th part music, the broadcast of the 6th portions of electronics book, the 7th part perpetual calendar, the 8th part timing start-up, timed recording, the implementation method of timing play function and the method in the second embodiment digital multimedia embedded equipment is consistent, does not repeat them here.In addition, playing function accepted by the TV that mobile digital TV itself is had and native system is irrelevant, so function is not described at this yet.
The implementation method of Session 9 GPS global positioning satellite function:
During the GPS function on, the cartographic information that at first main process chip 6 can will be stored in the portable memory card parses, and realizes demonstration, the broadcast of map image and voice messaging by video encoder 10 and audio codec 7.
At this moment, main process chip 6 can will be accepted the signal decoding of module 14 inputs by GPS by the inner integrated GPS decoding software of embedded OS, and the residing position of this machine of obtaining, height above sea level, translational speed etc., and these information and cartographic information, Voice Navigation prompting are together outputed on demonstration, the playback equipment.
Figure 5 shows that the 5th embodiment of the utility model digital audio/video multimedia embedded equipment, it is the digital multimedia embedded equipment with MP4+GPS function.Present embodiment combines the utility model second embodiment digital audio/video multimedia embedded equipment and GPS GPS (Global Position System).
Present embodiment has the repertoire of digital multimedia embedded equipment of the band digital television function of the 4th embodiment, and have four kinds of additional functions that increase newly, promptly liquid crystal display screen show, the taking pictures and shooting, FM broadcast receiver, microphone location of CMOS camera.
Comprise the power module 1, infrared remote control receiver 2, single-chip microcomputer 3, real-time clock module 4, Video Decoder 5, main process chip 6, audio codec 7, flash memories 8, storage card draw-in groove 9, video encoder 10, GPS receiver module 14, lithium battery administration module 15, liquid crystal display screen 16, FM radio receiver module 17, mini microphone 18 and the CMOS camera 19 that are arranged on the circuit board among Fig. 5.Wherein, main process chip 6 links to each other with Video Decoder 5, audio codec 7, single-chip microcomputer 3, flash memories 8 and portable memory card draw-in groove 9 respectively.Single-chip microcomputer 3 also links to each other with infrared remote control receiver 2, real-time clock module 4 and power module 1.Video Decoder 5 has two video input interfaces; Described audio codec 7 has two audio input interfaces.It should be noted that except that infrared remote control receiver 2 single-chip microcomputer 3 can also connect key circuit as the control signal input interface unit.Video encoder 10 is connected to main process chip 6, and has video output interface.Audio codec 7 has audio output interface.Primary processor 6 is connected with LCDs 16 with camera 19.Audio codec 7 is connected with FM radio receiver module 17 and microphone 18.Main process chip 6 is connected with the GPS receiver module.Power module 1 is connected with lithium cell charging administration module 15.As selection, also can not be with GPS receiver module and/or lithium cell charging administration module in the present embodiment.
In the present embodiment, first's system boot, the second portion audio frequency and video are recorded, synthetic, storage and " ring goes into to encircle out ", the third part multimedia file is play, the 4th part picture playing, the 5th part music, the 6th portions of electronics book is play, the 7th part perpetual calendar, the 8th part timing start-up, timed recording, regularly play, the implementation method of Session 9 GPS global positioning satellite function is consistent with method in the digital multimedia embedded equipment of the 4th embodiment band digital television function, and image shows that output is can be by software setting for directly showing output by the simulation output of video encoder 10 or by liquid crystal display screen 16 only.The implementation method that liquid crystal display screen shows will be described below.
The tenth part liquid crystal display screen shows
The realization of this function is under the control of embedded OS, and main process chip 6 can be selected corresponding view data output mode according to the data entry format of liquid crystal display screen 16, and shows on liquid crystal display screen 16.
The taking pictures and making a video recording of the tenth a part of CMOS camera
Under the control of embedded OS, main process chip 6 will order CMOS camera 19 to enter exposal model or image pickup mode.Image, the video data of CMOS camera 19 output ITU-601 forms are given main process chip 6, and main process chip 6 deposits view data in the portable memory card in the JPG reference format.If system is in image pickup mode, main process chip 6 with video data with MPEG-4 or H.263 coded format carry out encoding compression.And, being under the camera function pattern, the main core of handling can store the external voice signal get off with AMR or AAC form by audio codec 7, microphone 18.The implementation method of this and video record function is a basically identical.
The 12 part FM radio function
The realization of this function is under the control of embedded OS, main process chip 6 is provided with the reception frequency of FM radio reception module 17, and the module of FM radio reception afterwards 17 can be exported to loudspeaker by audio codec 7 with the audio signal after reception, the demodulation or output on the playback equipments such as TV, sound equipment.
The 13 part microphone location function
The realization of this function is under the control of embedded OS, main process chip 6 is stored in environmental audio signal in the portable memory card with the AMR/AAC/WAV form by audio codec 7, and audio codec can be play the audio signal output of microphone collection to playback equipments such as loudspeaker or TV simultaneously.
It should be noted that: present embodiment is owing to be the portable multimedia apparatus that has liquid crystal display screen, so selected the powering mode of lithium battery for use, so lithium battery administration module (15) in the schematic diagram, this module is used for the charging and the managing electric quantity of lithium battery, does not do too much description at this.
In sum, the utility model has been constructed a kind of digital audio/video multimedia device based on embedded OS, and its major parameter is as follows:
1. video input: PAL/NTSC/SECAM CVBS/Y-C
2. video record: exist in the flash of card or this machine, storage format is * .MP4, * .3GP.
Ultimate resolution is supported 640X480 30fps.
3. video playback: play the file in card or this machine flash,
The played file form is * .MP4, * .3GP.
Ultimate resolution is supported 720X480 30fps.
4. video output: PAL/NTSC/SECAM CVBS/Y-C
5. music: play the file in card or this machine Flash,
Forms such as played file form * .MP3, * .WMA, * .WAV, * .AMR.
6. picture playing: maximumly support the decoding of 1,600 ten thousand pixel JPG pictures.
7. e-book: support the TXT file to play.
8.GPS: support global positioning satellite, voice path navigation, touch screen hand-writing input etc.
Function.
9. perpetual calendar: support perpetual calendar and timed recording function.
10. recorder: support the microphone location function.
11.FM broadcast receiver: support the FM stereophonic broadcast receiving function.
The system-wide functions characteristics
1. standard FAT/FAT32 file system has good compatibility with Windows2000, XP, 2003, VISTA.
2. can realize " ring goes into to encircle out " function video record the time.Do not influence normally and watch, and image quality is unaffected.
3. can record/play the multimedia file of 3GP form, can realize realizing that with most mobile phones multimedia resource is shared.
4. support MPEG4, H.263, H.264, the video file of coded format such as AVS plays.
5. support at present the portable memory card of most of kinds on the market, for example: SD/MMC/Mini-SD/Micro-SD/CF/Memory Stick/Memory Stick Duo/MemoryStick PRO/Memory Stick PRO DUO/Memory Stick PRO (High Speed)/Memory Stick PRO DUO multiple portable memory card such as (High Speed).
Claims (10)
1, a kind of digital audio/video multimedia embedded equipment, it is characterized in that, comprise main process chip (6) that is arranged on the circuit board and Video Decoder (5), audio codec (7), single-chip microcomputer (3), flash memories (8) and the portable memory card draw-in groove (9) that links to each other with described main process chip (6); Described Video Decoder (5) has two video input interfaces; Described audio codec (7) has two audio input interfaces; Described single-chip microcomputer (3) is connected with control signal input interface unit, real-time clock module (4) and power module (1).
2, digital audio/video multimedia embedded equipment according to claim 1 is characterized in that, described control signal input interface unit comprises infrared remote control receiver (2).
3, digital audio/video multimedia embedded equipment according to claim 1 is characterized in that, described control signal input interface unit comprises key circuit.
4, digital audio/video multimedia embedded equipment according to claim 2, it is characterized in that, described main process chip (6) is connected with video encoder (10), and described video encoder (10) has video output interface, and described audio codec (7) also has audio output interface.
5, digital audio/video multimedia embedded equipment according to claim 4, it is characterized in that the MPEG2 decoder (13) that also comprise the DVD player core, links to each other, VFD display screen, DVD power module, video simulation switch (11) and audio frequency and video simulation hybrid switch (12) with movement; First video input interface of described Video Decoder (5) is connected with the camera video input interface with the television video input interface by video simulation switch (11), and second video input interface links to each other with the video output interface of described MPEG2 decoder (13); The first audio input interface external audio frequency input unit of described audio codec (7), second audio input interface links to each other with the audio output interface of MPEG2 decoder (13); The audio frequency output of video output, described MPEG2 decoder (13) and the audio codec (7) of described MPEG2 decoder (13) and video encoder (10) links to each other with the external audio frequency output interface with external video output interface by audio frequency and video simulation hybrid switchs (12) respectively; Described single-chip microcomputer (3) links to each other with described MPEG2 decoder (13), VFD display screen, DVD power module, video simulation switch (11) and audio frequency and video simulation hybrid switchs (12), and described infrared remote control receiver also links to each other with MPEG2 decoder (13).
6, digital audio/video multimedia embedded equipment according to claim 4, it is characterized in that, also comprise the digital tuner, demodulator, MPEG2 decoder (13), VFD display screen, DTV power module, video simulation switch (11) and the audio frequency and video simulation hybrid switch (12) that are used for tuning DTV signal; First video input interface of described Video Decoder (5) is connected with external video input interface, and second video input interface links to each other with the video output interface of described MPEG2 decoder (13); First audio input interface of described audio codec (7) links to each other with the external audio frequency input interface, and second audio input interface links to each other with the audio output interface of MPEG2 decoder (13); The video output of described MPEG2 decoder (13) and video encoder (10) links to each other with external video output interface by video simulation switch (11), and described MPEG2 decoder (13) links to each other with the external audio frequency output interface by audio frequency and video simulation hybrid switchs (12) with the audio frequency output of audio codec (7); Described single-chip microcomputer (3) links to each other with MPEG2 decoder (13), VFD display screen, DTV power module, video simulation switch (11) and audio frequency and video simulation hybrid switchs (12).
7, digital audio/video multimedia embedded equipment according to claim 6 is characterized in that, described main process chip (6) also is connected with the GPS receiver module.
8, digital audio/video multimedia embedded equipment according to claim 4 is characterized in that, described primary processor (6) is connected with camera (19) and LCDs (16); Described audio codec (7) also is connected with FM radio receiver module (17) and microphone (18).
9, digital audio/video multimedia embedded equipment according to claim 8 is characterized in that, described main process chip (6) also is connected with GPS receiver module (14).
10, according to Claim 8 or 9 described digital audio/video multimedia embedded equipments, it is characterized in that described power module (1) also is connected with lithium cell charging administration module (15).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201219399U CN201114506Y (en) | 2007-08-01 | 2007-08-01 | A digital audio and video multimedia built-in device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201219399U CN201114506Y (en) | 2007-08-01 | 2007-08-01 | A digital audio and video multimedia built-in device |
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| Publication Number | Publication Date |
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| CN201114506Y true CN201114506Y (en) | 2008-09-10 |
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| CNU2007201219399U Expired - Fee Related CN201114506Y (en) | 2007-08-01 | 2007-08-01 | A digital audio and video multimedia built-in device |
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| CN (1) | CN201114506Y (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447871A (en) * | 2010-10-13 | 2012-05-09 | 深圳市锐取软件技术有限公司 | High-definition matrix capable of realizing remote synchronous transmission of multichannel high-definition videos |
| CN102670079A (en) * | 2011-03-09 | 2012-09-19 | 徐光启 | Intelligent pot capable of teaching people to fry dish |
| CN106791554A (en) * | 2016-12-20 | 2017-05-31 | 广东电网有限责任公司电力调度控制中心 | A kind of Police Command Center audio-visual system Dual-Computer Hot-Standby System |
| CN113810982A (en) * | 2020-06-15 | 2021-12-17 | 特锐斯贝斯技术(Opc)私人有限公司 | System and method for optimizing power consumption of multimedia signal processing in a mobile device |
-
2007
- 2007-08-01 CN CNU2007201219399U patent/CN201114506Y/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102447871A (en) * | 2010-10-13 | 2012-05-09 | 深圳市锐取软件技术有限公司 | High-definition matrix capable of realizing remote synchronous transmission of multichannel high-definition videos |
| CN102447871B (en) * | 2010-10-13 | 2013-02-06 | 深圳市锐取软件技术有限公司 | High-definition matrix capable of realizing remote synchronous transmission of multichannel high-definition videos |
| CN102670079A (en) * | 2011-03-09 | 2012-09-19 | 徐光启 | Intelligent pot capable of teaching people to fry dish |
| CN106791554A (en) * | 2016-12-20 | 2017-05-31 | 广东电网有限责任公司电力调度控制中心 | A kind of Police Command Center audio-visual system Dual-Computer Hot-Standby System |
| CN113810982A (en) * | 2020-06-15 | 2021-12-17 | 特锐斯贝斯技术(Opc)私人有限公司 | System and method for optimizing power consumption of multimedia signal processing in a mobile device |
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