CN1889645A - Mobile telephone television receiver - Google Patents
Mobile telephone television receiver Download PDFInfo
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- CN1889645A CN1889645A CNA2006100429012A CN200610042901A CN1889645A CN 1889645 A CN1889645 A CN 1889645A CN A2006100429012 A CNA2006100429012 A CN A2006100429012A CN 200610042901 A CN200610042901 A CN 200610042901A CN 1889645 A CN1889645 A CN 1889645A
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- signal
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- mobile phone
- tuner
- mobile telephone
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Abstract
A TV receiver of mobile phone consists of TV signal receiving unit for receiving TV signal through antenna and for providing receiving TV signal to TV signal processing unit, TV signal processing unit for demodulating image . And sound signal in TV signal and compressing demodulated image signal to be image format suitably to be displayed on mobile phone picture and for coding image sound signal to let it be converted to be stream media format as well as for inputting image signal in said image format and stream format signal suitably to be displayed at mobile phone picture into mobile phone for displaying.
Description
Technical field
The present invention relates to a kind of video receiving apparatus, particularly mobile telephone television receiver.
Background technology
The main path that utilizes the mobile phone TV reception at present is by surfing Internet with cell phone, comes received television program by WAP.The advantage of this pattern is that mobile phone need not to transform, as long as open GPRS or CDMA1X, but its shortcoming is very significant: the one, and bandwidth is not enough, and what received is not fogging clear, not smooth, influences normal communication service simultaneously; The 2nd, the expense costliness.
Summary of the invention
The purpose of this invention is to provide a kind of mobile telephone television receiver, it is equipped with the broadband, and it is low to receive clear picture, smoothness, expense, it need not mobile phone is done any transformation, mobile phone only need be loaded onto a playout software, connect television receiver after, just can watch the analog/digital TV program.
The object of the present invention is achieved like this, and mobile telephone television receiver is characterized in that: which comprises at least the TV signal receiving element, be used for by the antenna received television signal; The TV signal that is used for receiving offers the processing television signals cell processing;
Processing television signals is used for TV signal image and voice signal are carried out demodulation, and the further boil down to of picture signal that demodulation is obtained is fit to the picture format that mobile phone picture shows; Be used for the audio signal of image is encoded, make it be converted to stream media format;
The signal that is used for being fit to picture format picture signal that mobile phone picture shows and stream media format is input to mobile phone by interface circuit and shows.
The high frequency that described TV signal receiving element can be a receiving digital signals receives head, also can be the reception head that receives anolog TV signals.
Described stream media format comprises MPEG4, H.263, H.264.
Described interface circuit is a kind of form of USB or bluetooth or infrared interface.
Operation principle of the present invention is: come the TV signal of acceptance criteria by the tuner of television receiver, utilize decoding chip that image and voice signal are carried out demodulation then.The further boil down to of the picture signal that demodulation obtains is fit to the mobile phone picture size, then this picture-and-sound signal is encoded, and makes it be converted to stream media format, as: MPEG4, H.263, H.264 etc.Be connected with mobile phone by interface circuit (USB/ bluetooth/infrared interface) at last.
Because directly by the TV signal of tuner acceptance criteria, the TV signal of acceptance criteria can be simulated, and also can be digital, utilizes decoding chip that image and voice signal are carried out demodulation then.The further boil down to of the picture signal that demodulation obtains is fit to the mobile phone picture size, then this picture-and-sound signal is encoded, and makes it be converted to stream media format, as: MPEG4, H.263, H.264 etc.Be connected with mobile phone by interface circuit (USB/ bluetooth/infrared interface) at last.
The present invention receives that clear picture, smoothness, expense are low, and it need not mobile phone is done any transformation, and mobile phone only need be loaded onto a playout software, connect television receiver after, just can watch the analog/digital TV program.
Performance characteristics of the present invention is:
1. input:
1) PLA system wireless television signal; Frequency range UHF-----VHF; 2) digital television broadcasting.
2. video compression:
1) observes the ITU-T international standard H.263; 2) the ITU-T international standard H.264;
3)MPEG-4。
3. video output formats:
1)H.263；2)H.264；3)MPEG-4。
4. export and control interface:
1) built-in pci interface controller; 2) support the USB2.0 transmission by processor; 3) support serial line interface, support infrared ray and bluetooth output by processor.
Description of drawings
The invention will be further described below in conjunction with the embodiment accompanying drawing.
Fig. 1 is an embodiment of the invention circuit block diagram;
Fig. 2 is embodiment of the invention video data decoding and code pattern.
Among the figure: 1, tuner; 2, tuner circuit; 3, signal demodulating circuit; 4, video signal coding circuit; 5, interface circuit; 6, microcontroller; 7, memory; 8, digital tuning circuitry.
Embodiment
As shown in Figure 1, the tuner 1 of television receiver is used for the TV signal of acceptance criteria, the tuner 1 of television receiver or the TV signal receiving element in the technical scheme can be that the high frequency of receiving digital signals receives head, also can be the reception heads that receives anolog TV signals.When tuner 1 is when receiving the reception of anolog TV signals, the signal that tuner 1 receives is at first by entering video signal coding circuit 4 behind tuner circuit 2, the signal demodulating circuit 3, the TV signal that video signal coding circuit 4 is handled is stored in the memory 7 under the control of microcontroller 6, microcontroller 6 is fit to the mobile phone picture size with the further boil down to of the picture signal of memory 7 simultaneously, then this picture-and-sound signal is encoded, make it be converted to stream media format, as: MPEG4, H.263, H.264 wait.Be connected with mobile phone by interface circuit 5 (USB/ bluetooth/infrared interface) at last and send to handset displays.
When tuner 1 is the reception of receiving digital signals, the signal that tuner 1 receives enters video signal coding circuit 4 by digital tuning circuitry 8, the TV signal that video signal coding circuit 4 is handled is stored in the memory 7 under the control of microcontroller 6, microcontroller 6 is fit to the mobile phone picture size with the further boil down to of the picture signal of memory DRAM7 simultaneously, then this picture-and-sound signal is encoded, make it be converted to stream media format, as: MPEG4, H.263, H.264 wait.Be connected with mobile phone by interface circuit 5 (USB/ bluetooth/infrared interface) at last and send to handset displays.
Fig. 2 has provided a kind of schematic block circuit diagram, and digital tuning circuitry 8 adopts digital video acquisition chip SAA7111A, and it is that Philips company produces.The work clock of this chip is 24.576MHz, and 1/2 line output locked clock LLC2 is 13 thus, 5MHz.Setting dateout color form is 4:2:2, and the input analog video is the PAL format video signal, and resolution is 720 * 576, per second 25 frames.Set function such as automatically switch between anti-aliasing filter, AD conversion, automatic clamping, automatic gain conversion, PAL and the TSC-system formula.Microcontroller is by 12C bus initial configuration SAA7111A.
Digital video coding circuit 4 compression work by the IME6410 monolithic of INTIME company design look, audio frequency MPEG4/2/1 code stream compression engine finishes.With the SAA7111A unanimity, a two field picture resolution is set to 720 * 576, and input data color form is 4; 2:2.IME6410 has the video digital encoder seamless interfacing that meets industrial standard, and the compound host interface of 16b is used for respectively communicating by letter with microcontroller chip with video capture processor.Microcontroller also receives the video code flow that compression obtains thus by the initial configuration of host interface realization IME6410.
Need to prove that the SAA7111A that digital tuning circuitry 8 is selected for use can receive anolog TV signals simultaneously, its A1 analog input mouth is connected with analog video signal, transmits analog video signal to video frequency processing chip.IME6410 has the video digital encoder seamless interfacing that meets industrial standard, can communicate by letter with SAA711A easily.The digital video signal that SAA7111A obtains after to the analog video signal sampling processing is delivered to IME6410 by 1/2 line output locked clock LLC2 from the VP00-VP015 pin, data are effective when the LLC2 rising edge, and IME6410 grasps the VD port data at the rising edge of the picture element input clock signal LLC2 that the PCLK pin receives.
Before separable field system chronizing impulse of SAA7111A and the horizontal synchronizing pulse, the digital video signal of every visual field effectively, SAA7111A can the output field lock-out pulse, and enables vertical reference signal VREF and put height; And every capable signal effectively before, also can export horizontal synchronizing pulse, and enable horizontal reference signal HREF and put height.Parity field identification signal RTS0 is connected with strange, an idol index signal FIELD pin, and high level is indicated strange, low level indication idol field.
IME6410 at first judges very, the idol field, when VREF and HREF are effective, when begin to receive the data of delegation subsequently, HREF is put low after data line receives, one field data receives back VREF and is put low, avoid receiving hash, the parity field of overturning simultaneously identification signal electronics at black-level period.When IME6410 received data, the chip internal video processor carried out the MPEG4 coding and outputs to buffer data.
IME6410 communicates by letter with AT91RM9200 by host interface, and AT91RM9200 visits resources such as the register of IME6410, memory space as the SRAM addressing.IME6410 transmits the MPEG4 code stream that obtains after the encoding compression by the host interface data wire HD0-HD15 that is connected with the SRAM port data line DO-D15 of AT91RM9200 to AT91RM9200.AT91RM9200 is by SRAM select lines NCS7 gating IME6410 chip, and its memory space address field in the AT91RM9200 addressing space is that 0X80000000 is to 0X8FFFFFFF.Address wire A0～A4 is connected with main frame port address line HA0～HA4 of IME6410, the register of addressing visit IME6410, and its 13 internal registers are 16B, and offset address is from 0x00 to 0xle.By to ADDR, the sequence of operations such as read-write of DATA and CONTROL register can be visited the IME6410 system memory space.IME6410 data flow snubber marking signal NFULL is from being configured to the PC20 input of general purpose I/O pin, and when buffer full or when plentiful, the NFULL pin is put low prompting AT91RM9200 and extracted coded data.Encoded video data read procedure and IME6410 and main-machine communication process are specifically by AT91RM9200 read signal NRD and write signal NWE control.AT91RM9200 receives the generation code stream and is stored in the memory 7, and memory 7 is made of DRAM and flash, and AT91RM9200 receives the generation code stream and is stored among the DRAM, by sending at the sheet port.Above each several part constitutes a digital video data acquiring and coding circuit, and the ATglRM9200 control circuit is worked, and the MPEG4 code stream is dispatched.AT91RM9200 communicates by letter with the networked physics layer chip interface at the sheet port.
The software of native system is by AT91RM9200 initialize routine, SAA7111A, and the configurator of IME6410 and interface chip, digital video MPEG4 code stream receive a plurality of modules such as stored program, MPEG4 code stream Ethernet router and system master program and form.
Setting and general purpose I/O pin that the initialize routine of AT91RM9200 is finished AT91RM9200 storehouse and running status position are provided with.Adopt the mode of the BOOT of FLASH, design Bootloader journey realizes that the bootstrapping of application program and data loads.SAA7111A, the configuration module of IME6410 is finished the setting of chip correlation function register parameters.
Digital video MPEG4 code stream receives the data flow snubber marking signal NFULL control of stored program by IME6410.When the 1kb buffer full or when half-full, NFULL places low level, and external host is read the EncodedStream register that IME6410 bias internal address is Oxl0.With the burst mode read buffer time, need to set the byte number that once reads.
As another embodiment of the invention is the reception and the processing of wireless digital TV-set, and its system for coding video signal mainly comprises two parts.The one, digital video data decoding and coding subsystem.The 2nd, video code flow sends subsystem.The coded format of Digital Television is MPEG2 at present, so in the present invention, we will decode it earlier, and then it is encoded to the MPEG4 mode.Other and simulated television are identical.
Claims (8)
1, mobile telephone television receiver is characterized in that: which comprises at least the TV signal receiving element, be used for by the antenna received television signal; The TV signal that is used for receiving offers the processing television signals cell processing;
Processing television signals is used for TV signal image and voice signal are carried out demodulation, and the further boil down to of picture signal that demodulation is obtained is fit to the picture format that mobile phone picture shows; Be used for the audio signal of image is encoded, make it be converted to stream media format;
The signal that is used for being fit to picture format picture signal that mobile phone picture shows and stream media format is input to mobile phone by interface circuit and shows.
2, mobile telephone television receiver according to claim 1 is characterized in that: the tuner (1) that described TV signal receiving element can be a receiving digital signals also can be the tuner (1) that receives anolog TV signals.
3, mobile telephone television receiver according to claim 1 is characterized in that: described stream media format comprises MPEG4, H.263, H.264.
4, mobile telephone television receiver according to claim 1 is characterized in that: described interface circuit is a kind of form of USB or bluetooth or infrared interface.
5, mobile telephone television receiver according to claim 2, it is characterized in that: when tuner (1) is when receiving the reception of anolog TV signals, the signal that tuner (1) receives is at first by tuner circuit (2), enter video signal coding circuit (4) behind the signal demodulating circuit (3), the TV signal that video signal coding circuit (4) is handled is stored under the control of microcontroller (6) in the memory (7), microcontroller (6) is fit to the mobile phone picture size with the further boil down to of picture signal of memory (7) simultaneously, then this picture-and-sound signal is encoded, make it be converted to stream media format, be connected with mobile phone by interface circuit (5) at last and send to handset displays.
6, mobile telephone television receiver according to claim 2, it is characterized in that: when tuner (1) is the reception of receiving digital signals, the signal that tuner (1) receives enters video signal coding circuit (4) by digital tuning circuitry 8, the TV signal that video signal coding circuit (4) is handled is stored in memory (7) under the control of microcontroller (6), microcontroller (6) is fit to the mobile phone picture size with the further boil down to of picture signal of memory DRAM (7) simultaneously, then this picture-and-sound signal is encoded, make it be converted to stream media format, be connected with mobile phone by interface circuit (5) at last and send to handset displays.
7, according to claim 5,6 described mobile telephone television receivers, it is characterized in that: encoding digital video signals circuit (4) compression work by the IME6410 monolithic of INTIME company design look, audio frequency MPEG4/2/1 code stream compression engine finishes.
8, according to claim 5,6 described mobile telephone television receivers, it is characterized in that: the SAA7111A that digital tuning circuitry (8) is selected for use can receive anolog TV signals simultaneously, its A1 analog input mouth is connected with analog video signal, transmits analog video signal to video frequency processing chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100429012A CN1889645A (en) | 2006-05-30 | 2006-05-30 | Mobile telephone television receiver |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2006100429012A CN1889645A (en) | 2006-05-30 | 2006-05-30 | Mobile telephone television receiver |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1889645A true CN1889645A (en) | 2007-01-03 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2006100429012A Pending CN1889645A (en) | 2006-05-30 | 2006-05-30 | Mobile telephone television receiver |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101321289B (en) * | 2008-06-13 | 2010-10-20 | 北京大学 | Method, system and device for processing video image in mobile phone television |
| CN101197631B (en) * | 2007-12-03 | 2011-03-02 | 中兴通讯股份有限公司 | Method for implementing mobile digital television |
| CN101119455B (en) * | 2007-09-13 | 2012-04-11 | 中兴通讯股份有限公司 | Method to fast display program information in handset television |
-
2006
- 2006-05-30 CN CNA2006100429012A patent/CN1889645A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101119455B (en) * | 2007-09-13 | 2012-04-11 | 中兴通讯股份有限公司 | Method to fast display program information in handset television |
| CN101197631B (en) * | 2007-12-03 | 2011-03-02 | 中兴通讯股份有限公司 | Method for implementing mobile digital television |
| CN101321289B (en) * | 2008-06-13 | 2010-10-20 | 北京大学 | Method, system and device for processing video image in mobile phone television |
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Effective date of abandoning: 20070103 |
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