CN201491143U

CN201491143U - Mobile phone television receiver

Info

Publication number: CN201491143U
Application number: CN2009201522944U
Authority: CN
Inventors: 向继芳
Original assignee: Individual
Current assignee: Individual
Priority date: 2009-04-30
Filing date: 2009-04-30
Publication date: 2010-05-26
Anticipated expiration: 2019-04-30

Abstract

The utility model provides a mobile phone television receiver, which is characterized in that the mobile phone television receiver comprises a television signal receiving unit; the television signal receiving unit is used to receive television signals through an antenna and is used to provide the received television signals to a television signal processing unit for processing; the television signal processing unit is used to demodulate the image and voice signals in the television signals and to further compress the image signals obtained through demodulation into images of formats suitable for being displayed by a mobile phone; the television signal processing unit is used to code the aural signals of the image to enable the aural signals to be converted into stream media formats; the television signal processing unit is used to input the image signals of the formats suitable for being displayed by the mobile phone and the signals of the stream media formats into the mobile phone for displaying through an interface circuit.

Description

A kind of mobile telephone television receiver

Technical field

The application relates to a kind of video receiving apparatus, particularly mobile telephone television receiver.

Background technology

The present situation of recognizing according to applicant's the practice in the company relevant with mobile video is: the main path that utilizes the mobile phone TV reception at present is by in the machine online, 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.Thus, the background knowledge of some mobile video software and hardwares that the project that the applicant participates in according to self is learnt provides a kind of technical scheme that addresses the above problem.

Summary of the invention

The application's purpose provides a kind of mobile telephone television receiver, and it is equipped with the broadband, and it is low to receive clear picture, smoothness, expense, and it is provided with a television receiver on mobile phone, 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: it comprises the TV signal receiving element, is 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.

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 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.The input signal of mobile phone can be, PAL, and H.263 NTCS or the like, compression standard can be, H.264, H.263 output format is, H.264, MPEG-4 etc.

Description of drawings

Accompanying drawing 1 is the module map of the application's technical scheme

Accompanying drawing 2 is schematic block circuit diagram of the application

Embodiment

As shown in Figure 1, the tuner of television receiver (1) is used for the TV signal of acceptance criteria, and the TV signal receiving element of tuner (1) can be digital joint, also can be the simulation joint.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, 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 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, 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, the SAA7111A that digital tuning circuitry (8) adopts digital video acquisition chip PHILIPS company to produce, the work clock of this chip is 24.576MHz, setting dateout color form is 4:2:2, the input analog video is the PAL format video signal, resolution is 720 * 576, per second 25 frames.Digital video coding circuit 4 compression can adopt that the IME6410 monolithic is looked, audio frequency MPEG4/2/1 code stream compression engine is finished, and 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 interface that meets industrial standard, and the compound host interface of 16bit 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.Microcontroller 6 is selected the AT91RM9200 of A1MEI company for use, and it can be used to various supercomputings an One Chip Solutions is provided.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.Separable field system chronizing impulse of SAA7111A and horizontal synchronizing pulse, before the digital video signal of every visual field is effective, SAA71IIA meeting output field lock-out pulse, 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 D0-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 0XS0000000 is to 0XSFFFFFFF.Address wire A0-A4 is connected with the main frame port address line HA0-HA4 of IME6410, the register of addressing visit IME6410, and its 13 internal registers are 16bit, 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, the NFULL pin is put low dike and shown that AT91RM9200 extracts coded data.Encoded video data read procedure and IME6410 and main-machine communication process specifically receive the generation code stream by AT91RM9200 read signal NRD and write signal NWE control AT9IRM9200 and are stored in the memory (7), memory (7) is made of DRAM and flash, AT91RM9200 receives the generation code stream and is stored among the DRAM, by sending at the sheet port.

Claims

1. mobile video receiver is characterized in that: comprise the tuner (1) of television receiver, be used for the TV signal of acceptance criteria, the TV signal receiving element of tuner (1) can be digital joint, also can be the simulation joint; 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) and send to handset displays.