CN202050482U - All-in-one machine for blue light playing and cable digital television - Google Patents
All-in-one machine for blue light playing and cable digital television Download PDFInfo
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Abstract
The utility model discloses an all-in-one machine for blue light playing and a cable digital television, which comprises a shell, a front panel fixed at a front end opening part of the shell, a rear panel fixed at a rear end opening part of the shell, a cable digital television unit arranged in the shell, a central processing unit, a blue light front end servo unit, a network connecting unit and a memory unit. The all-in-one machine for the blue light playing and the cable digital television also comprises an audio/video output unit. The cable digital television unit, the blue light front end servo unit, the network connecting unit, the memory unit and the audio/video output unit are all electrically connected with the central processing unit; and the central processing unit processes data signals transmitted by the cable digital television unit, the blue light front end servo unit and the network connecting unit, and then sends video/audio signals to the audio/video output unit. The all-in-one machine for the blue light playing and the cable digital television has higher integration degree, can realize blue light broadcasting and cable digital television broadcasting by adopting a decoding chip and supports a network function.
Description
Technical field
The utility model relates to that Digital Television receives and blue light is play the field, relates to especially a kind ofly not only having supported blue light to play but also support the integral type equipment that cable digital TV receives.
Background technology
" integrated " is a direction of family and the development of the personal electric consumer goods, and along with the development of technology such as computer technology, chip microprocessor, people also more and more rely on high-tech to bring our convenient.Audio-visual amusement is as the basic amusement equipment of Modern Family, and is also integrated by original decentralized set.
In the audio-visual multimedia system, except basic digital TV in high resolution, also should comprise aspects such as high-definition movie, high-quality music, album picture, diversification video clip.Maturation along with the large screen television technology, at present many families have had panel TV or even family expenses projector equipment, condition can be described as very ripe, as if but when the water comes, a channel is formed as panel TV as the control centre of medium, for general family, still rest on and to purchase for example digital TV set-top box, DVD player, blue light player, the high definition hard disc player, MP4, MP3, in the multimedia play equipment stage of a plurality of simple functions of CD player etc., so complicated family multi-media system does not obviously meet present audio-visual multimedia integrative development trend.
Chinese patent literature CN201084406Y(application number is 200720098697.6) a kind of etch-recordable type blue-ray DVD with digital RF receiving function disclosed, it comprises casing and cpu controller, also be provided with picking up signal/imprinting laser head in the casing, etch-recordable type movement electronic circuit, the digital RF receiver, casing is provided with the digital RF interface, picking up signal/imprinting laser head is connected with cpu controller by etch-recordable type movement electronic circuit, the digital RF interface is connected with digital RF receiver one end, the digital RF receiver other end is connected with cpu controller, and this machine can be realized the normal blue lightscribe, play and to the decoding of digital catv signal, imprinting.But the television decoding chip of this machine is not supported the decoding of AVS format standard, and be that decoded audio/video information is carried out imprinting when the cabled digital signal is carried out the blue light imprinting, digital television signal certainly exists the loss of signal in the process of decoding, processing, compare a kind of signal record mode that diminishes that belongs to signal emitting-source.And this machine is not provided with any network interface, does not therefore provide support for network function yet, can't share in the local area network (LAN) and the audio and video resources of enriching on the internet.
Chinese patent literature CN101447211A(application number is 200810220203.6) a kind of blue-ray DVD player and set-top box integrated machine disclosed, comprise front panel, microprocessor, power panel, blue-ray DVD movement and servo module, the blue-ray DVD decoding deck, set top box decodes plate and rear board, front panel is connected with microprocessor, microprocessor is connected with power panel, the blue-ray DVD decoding deck, the set top box decodes plate connects, power panel and blue-ray DVD decoding deck, the set top box decodes plate connects, the set top box decodes plate is connected with rear board, blue-ray DVD movement servo module is connected with the blue-ray DVD decoding deck, and the blue-ray DVD decoding deck is connected with rear board.This all-in-one is integrated into a product with blue-ray DVD player and set-top box, supports numeral to televise and blue light broadcast imprinting.But this all-in-one only is that blue-ray DVD is play part and the amalgamation simply of Digital Television part, blue-ray DVD is play and adopted the model of broadcom is the decoding chip of BCM7440, it is the decoding chip of Sti7101 that digital TV set-top box partly adopts model, two part decodings separately separately, integrated degree is lower, and cost is higher; The digital TV decoding plate of this all-in-one is not supported the decoding of AVS format standard simultaneously, and the network function of this machine is single, although the blue-ray DVD decoding deck is provided with network interface, but any description is not done in the effect of this network interface, and this area staff can't uniquely learn the function of network interface.The blue-ray DVD player part of this all-in-one only possesses the function that reads the blue light video disc, does not possess the function of imprinting blue light video disc, function singleness.
And the blue light of above-mentioned 2 patent documentation CN201084406Y, CN101447211A plays that part all adopts is international blu-ray standard (BD), and do not adopt Chinese blue light (CBHD) standard of China's independent intellectual property right.
Summary of the invention
Technical problem to be solved in the utility model provides that a kind of integrated degree is higher, the blue light of network enabled function is play and the cable digital TV all-in-one, and this all-in-one is supported the decoding of AVS format standard.
The technical scheme that realizes the utility model purpose provides a kind of blue light broadcast and cable digital TV all-in-one, comprise shell, be fixed on shell front opening place front panel, be fixed on the outer casing back opening part rear board, be arranged on cable digital TV unit and blue light front end servo unit in the shell, also comprise the audio frequency and video output unit that is arranged on the rear board.
Above-mentioned blue light is play and the cable digital TV all-in-one also comprises CPU, network connection unit and the memory cell that is arranged in the shell.
The audio frequency and video output unit comprises video output interface, HDMI (High Definition Multimedia Interface) and audio output unit.Audio output unit comprises digital audio and video signals output interface and simulated audio signal output unit.
CPU comprises video output module and audio frequency output module.CPU is provided with 2 SATA interfaces, Media Independent Interface, serial network interface, DDR2 interface, SDIO interface, I2C interface, I2S bus interface, S/PDIF interface, TS flow transmission end, PB end and nand flash interface.Wherein nand flash interface is also supported Nor Flash memory and the maximum capacity of supporting 8GB, and 2 SATA interfaces are divided into SATA0 interface and SATA1 interface.
The cable digital TV unit is provided with Digital Television radio frequency interface, PB end and TS flow transmission end.The cable digital TV unit is electrically connected with the PB end of CPU by its PB end, is electrically connected with the TS flow transmission end of CPU by its TS flow transmission end.
Blue light front end servo unit is provided with the STAT interface.The STAT interface of blue light front end servo unit is electrically connected with the SATA0 interface of CPU.
Network connection unit comprises wireless connections module and Ethernet wired connection module.The wireless connections module is provided with the SDIO interface, and the wireless connections module is by SDIO interface two-way be electrically connected of its SDIO interface with CPU.Ethernet wired connection module is provided with Media Independent Interface and serial network interface, the Media Independent Interface of Ethernet wired connection module is electrically connected with the Media Independent Interface of CPU, and the serial network interface of Ethernet wired connection module is electrically connected with the serial network interface of CPU.
Each output port of the video output interface of audio frequency and video output unit all is connected with the video output module of CPU.
The HDMI (High Definition Multimedia Interface) of audio frequency and video output unit all is electrically connected with the video output module and the audio frequency output module of CPU.
The digital audio and video signals output interface of the audio output unit of audio frequency and video output unit is connected with the S/PDIF interface of CPU.The simulated audio signal output unit of the audio output unit of audio frequency and video output unit is electrically connected with the I2S bus interface of CPU.
Memory cell comprises synchronous DRAM, flash memories and electronics erasable read-only memory.Synchronous DRAM is electrically connected with the DDR2 interface of CPU by its FPDP and control signal port.Flash memories is connected with the nand flash interactive interfacing of CPU by its I/O interface.The electronics erasable read-only memory is connected with the I2C interactive interfacing of CPU by the I2C bus.
CPU also comprises decoding chip, file format resolver, high resolution audio and video decoder, two gigabit Ethernet controller, double-H groove weld SB2.0 controller, flash controller, IR controller and SATA controller.It is the decoding chip of SMP8644 that decoding chip adopts model, and this decoding chip comprises the MIPS host CPU of Embedded 666MHz dominant frequency, and this host CPU is a kernel with MIPS32 74K (TM).Second MIPS processor is kernel with the MIPS32 4KEc (R) of 333MHz dominant frequency, and it is a floating-point coprocessor.The dominant frequency of the 3rd MIPS processor is 333MHz, and it is a safe processor.
The support of high resolution audio and video decoder comprise MPEG-1, MPEG-2, H.264, the decoding of the video format standard of WMV9, AVS and the decoding that comprises the audio format standard of PCM, dolby Digital, avs audio, mpeg1-3, mpeg-4 AAC and WMA9.
The video output module is an image back end processing module, and this image back end processing module is supported functions such as video digital-to-analogue conversion, Gamma correction, film reduction technique, frame rate conversion, deblocking filtering, noise reduction, image-zooming and two dimensional image processing.The audio frequency output module comprises that a dominant frequency is the audio digital signal processor of 333MHz, EQ, the 3D that is responsible for audio frequency output around etc. post-processed.
CPU also is provided with 2 USB interface.Memory cell also comprises hard disk and USB memory device.Hard disk is 500 to 1500GB harddisk memory, is connected alternately with CPU by the SATA1 interface.When using, the USB memory device is connected alternately with CPU by 2 USB interface.
The cable digital TV unit is wired digital TV in high resolution receiver module, comprises that RF tuner, UTI main interface, UTI are from interface, TS programme information processing module, program descrambling module, central processing unit, memory, ISO7816 intelligent card interface and smart card.The RF tuner is provided with the Digital Television radio frequency interface.The output of RF tuner is connected with the UTI main interface, the UTI main interface is connected alternately with the mode of TS programme information processing module by the USB parallel data, the UTI main interface is connected from the mode of interface by the USB serial data alternately with UTI, TS programme information processing module is electrically connected with the program descrambling module is two-way, central processing unit all is connected alternately with ISO7816 intelligent card interface, memory, TS programme information processing module, program descrambling module, and smart card inserts the ISO7816 intelligent card interface in use and is electrically connected with the ISO7816 intelligent card interface.UTI is provided with PB end and TS flow transmission end from interface.UTI is connected with the PB end of CPU from the PB end of interface, and UTI is connected with the TS flow transmission end of CPU from the TS flow transmission end of interface.
The operating frequency range of cable digital TV unit is 111 to 862MHz, and channel bandwidth is 8MHz, and input impedance is 75 ohm, and demodulation mode is supported 16QAM, 32QAM, 64QAM, 128QAM and 256QAM, and range of symbol rates is 3.6 to 6.952Mbaud.
Blue light front end servo unit is that a Blu-ray Disc reads the unit with imprinting, comprises servo circuit, synchronous DRAM, flash memories, loader, radio frequency amplifier, optically read shaven head and drive circuit based on digital signal processor.The model of the chip that adopts based on the servo circuit of digital signal processor is NT90912, and this chip is supported the data computation of the servo EQ of high sampling rate by the kernel of two DSP, supports FSM, ETM, EFM+, EFM modulation system, also supports CBHD/DVD/CD.Synchronous DRAM, flash memories and radio frequency amplifier all are connected alternately with servo circuit.Flash memories is used for the control program of storing servo circuit, the ephemeral data during synchronous DRAM storing servo processing of circuit.The control signal output ends of servo circuit is electrically connected with the control end of drive circuit, and the output of drive circuit is electrically connected with the power end of the corresponding motor of loader.Loader comprises motor and corresponding CD bearing device etc., is used for loading and driving CD.Optically read shaven head is the integrated shaven head of CBHD blue light/ruddiness, and radio frequency amplifier is connected alternately with optically read shaven head.The model of radio frequency amplifier is NT90902, and radio frequency amplifier has the bandwidth of 60MHz, supports the differential signal input of CBHD/DVD/CD, supports the TE of 3 bundles, PP, DPP to detect, and supports APC.
Servo circuit is provided with the STAT interface.
The model of the wireless connections module of network connection unit is SWL-A20S, based on the 802.11n standard, and backward compatible 802.11a/b/g.The model of Ethernet wired connection module is RTL8201CP, and Ethernet wired connection module comprises the physical chip of supporting the 10/100M transmission and the transmitter that is connected alternately with physical chip, and transmitter is provided with the RJ-45 interface.
Video output interface comprises composite video broadcast singal output port, video component terminal output port and S terminal output port.
HDMI (High Definition Multimedia Interface) is supported HDMI 1.3a standard, the format standard of the highest support 1080P.
The digital audio and video signals output interface is a digital audio coaxial output line mouth.The simulated audio signal output unit comprises an audio digital to analog converter and the stereo left and right sound channels output port that is connected with audio digital to analog converter, and the simulated audio signal output unit is electrically connected with the I2S bus interface of CPU by its audio digital to analog converter.
The synchronous DRAM of memory cell comprises that 2 32MX16 organizational forms, capacity are DDR2 sdram memory device and 2 DDR2 sdram memory devices that 64MX16 organizational form, capacity are 1G of 512M.Flash memories is the NAND type flash memories of 128Mbit.The electronics erasable read-only memory is the EEPROM of 16k position.The ephemeral data that ephemeral data when the internal memory of 2 512M capacity in the synchronous DRAM of memory cell is used for storing the CPU decoding processing, the internal memory of 2 1G capacity in the synchronous DRAM are used for storing CPU when carrying out system management.Flash memories is used for the storing software control program.The electronics erasable read-only memory is used for depositing the hardware setting data.
Above-mentioned blue light is play and the cable digital TV all-in-one also comprises the VFD display screen that is fixed on the front panel, be arranged on the front panel circuit board in the shell and be arranged on receiver of remote-control sytem on the front panel.
CPU also is provided with remote signal input and high-speed synchronous serial line interface.
Receiver of remote-control sytem is an I.R. infrared receiving device, is provided with the remote signal output.The remote signal output of receiver of remote-control sytem is electrically connected with the remote signal input of CPU.
Also be provided with the control button device that comprises power switch button device, channel switch button device, function switching push button device, volume adjusting button device on the front panel.VFD display screen and each control button device all are electrically connected with the front panel circuit board.Be electrically connected by the high-speed synchronous serial port between the output of the above-mentioned device of front panel circuit board and the CPU.
The utlity model has positive effect: (1) ground digital television receiver of the present utility model is owing to adopt an integrated decoding chip can support to comprise MPEG-2, the 10th part H.264(MPEG-4), VC-1(WMV9) and the decoding of the multiple coding standard of AVS, support that not only coding standard is many, and saved and adopted a plurality of decoding chips respectively to the decode process of data interaction again of respective coding standard, decode procedure is simply efficient.
(2) ground digital television receiver of the present utility model can directly carry out stored record to the TS data flow of ground digital television program by SATA-2 interface and USB interface, and can name automatically according to channel program information, this storage mode is a kind of break-even code stream recording mode of comparing with the ground digital television signal emission source.
What (3) ground digital television receiver of the present utility model adopted is that model is the two-way demodulation chip of ATBM8831, supports the demodulation of two kinds of modulation systems of multi-carrier scheme (DMB-T) of the single-carrier scheme (ADTB-T) of Shanghai Communications University and Tsing-Hua University simultaneously.
(4) ground digital television receiver of the present utility model is supported digital audio, analogue audio frequency, analog video, composite video broadcast singal and the multiple audio frequency of HDMI high-resolution multimedia signal, the video way of output, can satisfy different users's different demands.
Description of drawings
Fig. 1 is a kind of structural representation of hardware system of the present utility model.
Mark in the above-mentioned accompanying drawing is as follows:
Cable digital TV unit 2, RF tuner 21, UTI main interface 22, UTI be from interface 23, TS programme information processing module 24, and program descrambling module 25, central processing unit 26, memory 27, ISO7816 intelligent card interface 28, smart card 29,
Blue light front end servo unit 3, servo circuit 31, synchronous DRAM 32, flash memories 33, loader 34, radio frequency amplifier 35, optically read bare headed 36, drive circuit 37,
Audio frequency and video output unit 5, video output interface 51, HDMI (High Definition Multimedia Interface) 52, audio signal output interface 53, simulated audio signal output unit 54, audio digital to analog converter 54-1,
Memory cell 6, synchronous DRAM 61, flash memories 62, electronics erasable read-only memory 63, hard disk 64, USB memory device 65,
Receiver of remote-control sytem 7.
Embodiment
(embodiment 1)
See Fig. 1, the blue light of present embodiment play and the cable digital TV all-in-one comprise shell, be fixed on shell front opening place front panel (Front Panel), be fixed on the rear board (Back Panel) of outer casing back opening part and be arranged on CPU 1, cable digital TV unit 2, blue light front end servo unit 3, network connection unit 4, memory cell 6 and front panel circuit board in the shell, also comprise the audio frequency and video output unit 5 that is arranged on the rear board and be arranged on receiver of remote-control sytem 7 on the front panel.
The model that the decoding chip 11 of CPU 1 adopts Sigma Design company to make is the decoding chip of SMP8644, the SMP8644 decoding chip is a three core processors, this decoding chip comprises the MIPS host CPU (CPU) of Embedded 666MHz dominant frequency, this host CPU is a kernel with MIPS32 74K (TM), and 1330 DMIPS that it provides help to realize accurate user interaction and applied widely function; Second MIPS processor volume is less, MIPS32 4KEc (R) with the 333MHz dominant frequency is a kernel, it is a floating-point coprocessor (IPU), can manage system tasks such as real-time interrupt operation, unloading network and figure, thereby further optimizes the utilance of host CPU; The dominant frequency of the 3rd MIPS processor is 333MHz, and it is a safe processor (Security CPU), is applied to the AACS/DKAA of DRM system, and management comprises that deciphering and key are created on all interior system security function.
High resolution audio and video decoder 13 support comprise MPEG-1, MPEG-2, H.264, WMV9(VC-1), the decoding of the video format standard of AVS and the decoding that comprises the audio format standard of PCM, dolby Digital, avs audio, mpeg1-3, mpeg-4 AAC and WMA9;
Other relevant circuit of CPU 1 comprises video output module 14, audio frequency output module 15, two gigabit Ethernet controller 16-1, double-H groove weld SB2.0 controller 16-2, flash controller 16-3, IR controller 16-4 and SATA controller 16-5 and corresponding all kinds of peripheral interface (peripheral interface).
Cable digital TV unit 2 is based on the UTI(universal transport interface of China's autonomous innovation) wired digital TV in high resolution receiver module (UTI DVB-C) of separation between machine and card standard, comprise that RF tuner (RF NIM) 21, UTI main interface 22, UTI are from interface 23, TS programme information processing module 24, program descrambling module 25, central processing unit (cpu) 26, memory 27, ISO7816 intelligent card interface 28 and smart card (smart card) 29.RF tuner 21 is provided with the Digital Television radio frequency interface, and RF tuner 21 receives digital catv signal by the Digital Television radio frequency interface, and possesses the function of channel demodulation and channel-decoding.The output of RF tuner 21 is connected with UTI main interface 22, UTI main interface 22 is connected alternately with TS programme information processing module 24 modes by the USB parallel data, UTI main interface 22 is connected from the mode of interface 23 by the USB serial data alternately with UTI, TS programme information processing module 24 and program descrambling module 25 two-way electrical connections, central processing unit 26 and ISO7816 intelligent card interface 28, memory 27, TS programme information processing module 24, program descrambling module 25 all connects alternately, and smart card 29 inserts ISO7816 intelligent card interface 28 in use and is electrically connected with ISO7816 intelligent card interface 28.The operating frequency range of cable digital TV unit 2 is 111 to 862MHz, and channel bandwidth is 8MHz, and input impedance is 75 ohm, and demodulation mode is supported 16QAM, 32QAM, 64QAM, 128QAM and 256QAM, and range of symbol rates is 3.6 to 6.952Mbaud.UTI is provided with the PB(peripheral bus from interface 23) end and TS(Transport Stream) the flow transmission end.Cable digital TV unit 2 is electrically connected with the PB end of CPU 1 from the PB end of interface 23 by UTI, is electrically connected with the TS flow transmission end of CPU 1 from the TS flow transmission end of interface 23 by UTI.
Blue light front end servo unit 3 is that a Blu-ray Disc reads the unit with imprinting, comprises servo circuit (Servo) 31, synchronous DRAM (sdram) 32, flash memories (S-FLASH) 33, loader (CBHD loader) 34, radio frequency amplifier (RF) 35, optically read shaven head (OPU) 36 and drive circuit (Driver) 37 based on digital signal processor (DSP).The model that adopts Novatek companies to make based on the servo circuit 31 of digital signal processor is the chip of NT90912, this chip is by two DSP(digital signal processors) kernel support the servo EQ(equalizer of high sampling rate) data computation, support FSM, ETM, EFM+, EFM modulation system, support CBHD/DVD/CD; Synchronous DRAM 32, flash memories 33 and radio frequency amplifier 35 all are connected alternately with servo circuit 31.Flash memories 33 is used for the control program of storing servo circuit 31, the ephemeral data when synchronous DRAM 32 storing servo circuit 31 are handled.The control signal output ends of servo circuit 31 is electrically connected with the control end of drive circuit 37, and the output of drive circuit 37 is electrically connected with the power end of the corresponding motor of loader 34.Loader 34 comprises motor and corresponding CD bearing device etc., is used for loading and driving CD.Optically read bare headed 36 is the integrated shaven heads of CBHD blue light/ruddiness, and radio frequency amplifier 35 is connected alternately with optically read bare headed 36; That radio frequency amplifier 35 adopts is the NT90902 that Novatek company makes, NT90902 has the bandwidth of 60MHz, support the differential signal input of CBHD/DVD/CD, support 3 bundles, PP(to recommend), DPP(is differential recommends) TE(tracking mistake) detect, support the control of APC(automated power).Servo circuit 31 drives loader 34 by driver control Driver Circuit 37 and loads the CBHD CD, read or the imprinting Blu-ray Disc by optically read bare headed 36 then, servo circuit 31 produces servo-control signal and is sent to drive circuit 37 and radio frequency amplifier 35 simultaneously, by loader 34 and optically read bare headed 36, realize focus servo, tracking servo and feed servo again.The servo circuit 31 of blue light front end servo unit 3 is provided with the STAT interface, and the STAT interface of blue light front end servo unit 3 is electrically connected with the SATA0 interface of CPU 1.
Audio frequency and video output unit 5 comprises video output interface 51, high-definition multimedia (HDMI) interface 52 and audio output unit.
Video output interface 51 comprises composite video broadcast singal (CVBS) output port, video component terminal (Y, Pr, Pb) output port and S terminal (S-video) output port.Each output port of video output interface 51 all is connected with the video output module 14 of CPU 1.
High-definition multimedia (HDMI) interface 52 is supported HDMI 1.3a standard, the format standard of the highest support 1080P.High-definition multimedia (HDMI) interface all is electrically connected with video output module 14, the audio frequency output module 15 of CPU 1.
Audio output unit comprises digital audio and video signals output interface 53 and simulated audio signal output unit 54 two parts, and wherein digital audio and video signals output interface 53 is digital audio coaxial (COAX) output ports that are connected with the S/PDIF interface of CPU 1; Simulated audio signal output unit 54 comprises an audio digital to analog converter (Stereo DAC) 54-1 and the stereo left and right sound channels output port that is connected with audio digital to analog converter 54-1, and audio digital to analog converter (Stereo DAC) 54-1 also is electrically connected with the I2S bus interface of CPU 1.
Memory cell 6 comprises synchronous DRAM (sdram) 61, flash memories (FLASH) 62, electronics erasable read-only memory (EEPROM) 63, hard disk (HDD) 64 and USB memory device 65.Wherein synchronous DRAM 61 comprises that 2 32MX16 organizational forms, capacity are DDR2 sdram memory device and 2 DDR2 sdram memory devices that 64MX16 organizational form, capacity are 1G of 512M.Flash memories 62 is the NAND type flash memories of 128Mbit.Electronics erasable read-only memory 63 is EEPROM of 16k position (2k byte).Ephemeral data when the internal memory of 2 512M capacity in the synchronous DRAM 61 of memory cell 6 is used for storing CPU 1 decoding processing, the ephemeral data that the internal memory of 2 1G capacity in the synchronous DRAM 61 is used for storing CPU 1 when carrying out system management, synchronous DRAM 61 is electrically connected with the DDR2 interface of CPU 1 by its FPDP and control signal port; Flash memories 62 is used for the storing software control program, is connected with the nand flash interactive interfacing of CPU 1 by its I/O interface, and described software control procedure can be controlled the operation of CPU 1.Electronics erasable read-only memory 63 is used for depositing the hardware setting data, is connected alternately with CPU 1 by the I2C bus; Hard disk (HDD) 64 is 500 to 1500GB harddisk memory, is connected alternately with CPU 1 by the SATA1 interface; The external memory device of USB memory device 65 for matching can be connected with CPU 1 alternately by 2 USB interface.
Receiver of remote-control sytem 7 is I.R. infrared receiving devices, can accept infrared remote control signal.The remote signal output of receiver of remote-control sytem 7 is electrically connected with the remote signal input of CPU 1, can be to CPU 1 output control signal.
The blue light of present embodiment is play and the cable digital TV all-in-one also comprises the VFD display screen, this VFD display screen is fixed on the front panel, also is provided with the control button device that comprises power switch button device, channel switch button device, function switching push button device, volume adjusting button device on the front panel.VFD display screen and each control button device all are electrically connected with the front panel circuit board.Be electrically connected by high-speed synchronous serial port (SPI signal) between the output of the above-mentioned device of front panel circuit board and the CPU 1.The user can send corresponding all kinds of control signals to CPU 1 after pressing the corresponding button on the front panel, the front panel circuit board can be accepted the signal that CPU 1 sends and be forwarded to the VFD display screen, and the VFD display screen shows corresponding channel indication information etc.
Each output port of audio frequency and video output unit 5 all is arranged on the rear board.
The operating system that the blue light of present embodiment is play and the cable digital TV all-in-one adopts is Linux, and main bottom software has bottom layer driving such as the driving, blue light servo-drive program of driver, the WI-FI of Linux kernel, UTI and servo driving, DCC-HD presentation Engine(DVD/CD Navigation); Application layer software comprises the navigation (navigation), user interface (UI) of CBHD/VCD, based on the digital publishing rights encipherment protection technology (DRM) of DKAA; The agreement of supporting has: TCP/IP, HTT, FTP, TELNET, SLP, SNMP, LRP, UDP, UDCP, UTI etc.; The video code model of supporting has: MPEG1, MPEG 2, MPEG 4, H.264, VC-1, WMV-9, AVS-S, RM, RMVB, AVI, VOB, MOV, Mp4; The audio coding form of supporting has: MPEG, LPCM, AC-3, AAC, AVS-A, DRA, WMA, OGG, MP3; The picture format of supporting has: JPEG,, GIF, BMP, PNG; The external interface of supporting has: HDMI, SATA (2), USB (2), SPDIF, YpbPr, cvbs, Audio L/R, RJ-45.
Therefore, above-mentioned blue light is play and the major function of digital TV integrated machine support has: receive the DVB-C cable digital TV, have the separation between machine and card function; Play the CBHD/DVD/VCD/CD CD; Browse embedded fixedly website, carry out the online broadcast of audio/video file/download; The access on hard disk of video content and data file; To the copyright protection that CD content is encrypted, digital signature is differentiated; Online broadcast/download content is carried out encrypting and authenticating, authorized and play.
The blue light broadcast and the digital TV integrated machine use of present embodiment are as follows: behind the complete machine powering, if use the cable digital TV playing function, then the smart card 29 with cable digital TV unit 2 inserts in the ISO7816 intelligent card interface 28, and the Digital Television radio frequency interface of RF tuner 21 is connected with corresponding cable digital TV cable, start the function that cable digital TV is play by relevant control button on the front panel or the control of the infrared remote controller that is complementary then, thereby can receive digital catv signal by the RF tuner 21 of cable digital TV unit 2, and signal carried out detection, amplify, decompose, digital catv signal is demodulated to scrambling TS data flow, then scrambling TS data flow transmission is arrived UTI main interface 22, UTI main interface 22 imports a part of scrambling TS data flow into UTI from interface 23 by the USB serial data channel, UTI holds the central processing unit of scrambling TS data flow transmission to CPU 1 by PB from interface 23, the decoding chip 11 of CPU 1 is given 22 1 control commands of UTI main interface, UTI main interface 22 imports another part scrambling TS data flow into TS programme information processing module 24 by USB parallel data mode, TS programme information processing module 24 transfers to program descrambling module 25 and central processing unit 26 simultaneously with scrambling TS data flow, central processing unit 26 deposits information in memory 27 or deposits in the smart card 29 by ISO7816 intelligent card interface 28, obtain, authentication and update user information and ECM, the EMM deciphering, obtain the process of descrambled control words (CW), thereby make program descrambling module 25 to carry out descrambling, and pass descrambling TS data flow back TS programme information processing module 24 scrambling TS data flow; TS programme information processing module 24 reaches UTI main interface 22 with descrambling TS data flow, UTI main interface 22 imports descrambling TS data flow into UTI from interface 23 by the USB serial data channel again, from interface 23 descrambling TS data flow is reached the file format resolver 12 of CPU 1 again by UTI, file format resolver 12 through CPU 1 is resolved, separate the packed data stream PES(Packetized Elementary Stream that generates audio frequency), the packed data stream of video, Program Specific Information stream (PSI) and other packets, then the packed data stream of audio frequency and the packed data flow point supplementary biography of video are delivered to the decoding of carrying out Voice ﹠ Video in the high resolution audio and video decoder 13, carry out video decode and audio decoder and deliver to video output module 14 and audio frequency output module 15 respectively by 13 pairs of data of receiving of high resolution audio and video decoder, 14 pairs of video data streams of receiving of video output module are handled again, after 15 pairs of audio data streams of receiving of audio frequency output module are handled again, handle again at last and generate digital high-definition video signal, the composite video broadcast singal, digital audio and video signals and simulated audio signal, each road signal such as high-resolution multimedia signal HDMI signal.In these signals, digital high-definition video signal is transported to video component terminal Y end, Pr end and the Pb end of video output interface 51, the composite video broadcast singal is transported to the composite video broadcast singal output port cvbs end of video output interface 51, digital audio and video signals is transported to the digital audio and video signals output interface 53 of audio output unit, simulated audio signal is transported to the simulated audio signal output unit 54 of audio output unit, and high-resolution multimedia signal HDMI signal is transported to HDMI (High Definition Multimedia Interface) 52.
When using the blue light playing function, in the loader 34 of blue light front end servo unit 3, insert the CBHD CD, read the multi-medium data on the CBHD CD and send into radio frequency amplifier 35 by optically read bare headed 36,35 pairs of signals of radio frequency amplifier carry out processing such as data amplification and CSS descrambling and send into servo circuit 31 again, servo circuit 31 carries out the demodulation of 4-6 modulation code to data again, error correction, Media Mark discerns etc., data after the processing are sent into CPU 1 by servo circuit 31 by the SATA0 interface, simultaneously servo circuit 31 produces servo-control signals and is sent to loader 34 and optically read bare headed 36, realizes focus servo, tracking servo and feed servo.After the safe processor of the decoding chip 11 of CPU 1 carries out DKAA and AACS deciphering to the data of receiving, carry out video decode and audio decoder and deliver to video output module 14 respectively by 13 pairs of data of receiving of high resolution audio and video decoder, audio frequency output module 15,14 pairs of video data streams of receiving of video output module are handled again, after 15 pairs of audio data streams of receiving of audio frequency output module are handled again, handle again at last and generate digital high-definition video signal, the composite video broadcast singal, digital audio and video signals and simulated audio signal, each road signal such as high-resolution multimedia signal HDMI signal, in these signals, digital high-definition video signal is transported to the video component terminal Y end of video output interface 51, Pr end and Pb end, the composite video broadcast singal is transported to the composite video broadcast singal output port cvbs end of video output interface 51, digital audio and video signals is transported to the digital audio and video signals output interface 53 of audio output unit, simulated audio signal is transported to the simulated audio signal output unit 54 of audio output unit, and high-resolution multimedia signal HDMI signal is transported to HDMI (High Definition Multimedia Interface) 52.
The wireless connections module that the blue light of present embodiment is play and the cable digital TV all-in-one can be by network connection unit 4 is connected in home network or the job network in the mode of wireless connections or the RJ-45 interface by the Ethernet wired connection module mode with wired connection, realize the computer in home network or the job network, TV, mobile audiovisual equipment, information equipment, sharing of the video/audio that the all-in-one of peripheral equipment and present embodiment is mutual, all-in-one can be by the video/audio of the various kinds of equipment stored in network connection unit 4 visit home networks or the job network, under the control of CPU 1, video/audio in the accesses network on certain equipment also receives, and perhaps visits video/audio and the reception looked in the wide area network on the audio frequency website.13 pairs of data of receiving of the high resolution audio and video decoder of CPU 1 are carried out video decode and audio decoder and are delivered to video output module 14 respectively, audio frequency output module 15,15 pairs of video data streams of receiving of video output module are handled again, after 15 pairs of audio data streams of receiving of audio frequency output module are handled again, handle again at last and generate digital high-definition video signal, the composite video broadcast singal, digital audio and video signals and simulated audio signal, each road signal such as high-resolution multimedia signal HDMI signal, in these signals, digital high-definition video signal is transported to the video component terminal Y end of video output interface 51, Pr end and Pb end, the composite video broadcast singal is transported to the composite video broadcast singal output port cvbs end of video output interface 51, digital audio and video signals is transported to the digital audio and video signals output interface 53 of audio output unit, simulated audio signal is transported to the simulated audio signal output unit 54 of audio output unit, and high-resolution multimedia signal HDMI signal is transported to HDMI (High Definition Multimedia Interface) 52.
The blue light broadcast of present embodiment and cable digital TV all-in-one are when using the cable digital TV playing function, CPU 1 can directly be carried out record to the TS flow data, directly store USB memory device 65 by the direct stored record of SATA-1 interface into to hard disk 64 or by USB interface, and can name the file of record storage according to the Program Specific Information stream (PSI) that file format resolver 12 parses from the TS data flow, owing to be directly the TS flow data to be carried out record, thus the program of recording and storing to compare with the cabled digital signal emitting-source be break-even code stream record.
Certainly, CPU 1 can read the TS stream program data that is stored in SATA memory device or the USB memory device, and the file format resolver 12 of the integrated signal decoding unit of process is resolved, separate and generate audio compression data stream, video compression data stream, Program Specific Information stream and other packets, then audio compression data stream and video compression data are spread and deliver to the decoding of carrying out Voice ﹠ Video in the high resolution audio and video decoder, 13 pairs of data of receiving of the high resolution audio and video decoder of CPU 1 are carried out video decode and audio decoder and are delivered to video output module 14 respectively, audio frequency output module 15,14 pairs of video data streams of receiving of video output module are handled again, after 15 pairs of audio data streams of receiving of audio frequency output module are handled again, handle again at last and generate digital high-definition video signal, the composite video broadcast singal, digital audio and video signals and simulated audio signal, each road signal such as high-resolution multimedia signal HDMI signal, in these signals, digital high-definition video signal is transported to the video component terminal Y end of video output interface 51, Pr end and Pb end, the composite video broadcast singal is transported to the composite video broadcast singal output port cvbs end of video output interface 51, digital audio and video signals is transported to the digital audio and video signals output interface 53 of audio output unit, simulated audio signal is transported to the simulated audio signal output unit 54 of audio output unit, and high-resolution multimedia signal HDMI signal is transported to HDMI (High Definition Multimedia Interface) 52.
When using blue light imprinting function, in the loader 34 of blue light front end servo unit 3, insert the empty CD of CBHD, the safe processor of CPU 1 carries out after DKAA and AACS encrypt being stored in the data that need imprinting in SATA memory device or the USB memory device, transfer to servo circuit 31 by the SATA0 interface, servo circuit 31 transfers to optically read bare headed 36 with engraving data, servo circuit 31 produces servo-control signal and is sent to drive circuit 37 and radio frequency amplifier 35 simultaneously, by loader 34 and optically read bare headed 36, on the empty CD of CBHD, write data again.
Above-mentioned blue light broadcast and cable digital TV all-in-one audio frequency and video output performance data are as follows:
(1) video properties:
The horizontal definition of component vide (YPBPR) output: 〉=720TV line;
Amplitude in the YPBPR output signal (each passage): 〉=700MV(1 ± 20%) (PAL);
YPBPR output signal bandwidth: Y passage: 〉=5.5MHZ(-6dB), the PB passage: 〉=2MHZ(-6dB), the PR passage: 〉=2MHZ(-6dB);
YPBPR output signal-noise ratio: Y passage 〉=50 dB, PB passage 〉=50 dB, PR passage 〉=50 dB.
(2) acoustic characteristic (each passage)
(i) simulate the audio frequency output characteristic:
Audio output level: 2 ﹢, 0.2 ﹣, 0.5 V,
Audible effects: 8HZ～20KHZ (± 1.5 Db),
The distortion plus noise :≤-75 dB(1KHZ),
The audio frequency signal to noise ratio: 〉=90 dB,
Dynamic range: 〉=85dB,
Level is done linear: ± 0.5dB,
1KH cross-talk: 〉=85dB;
(ii) digital audio output characteristic:
The digital audio output level: optical fiber output: 1.6 ± 0.3V,
Coaxial output: 500 ± 100MV;
Numeral output frequency deviation :≤4HZ.
Claims (10)
1. a blue light is play and the cable digital TV all-in-one, comprise shell, be fixed on shell front opening place front panel, be fixed on the outer casing back opening part rear board, be arranged on cable digital TV unit (2) and blue light front end servo unit (3) in the shell, also comprise the audio frequency and video output unit (5) that is arranged on the rear board; It is characterized in that:
Also comprise the CPU (1), network connection unit (4) and the memory cell (6) that are arranged in the shell;
Audio frequency and video output unit (5) comprises video output interface (51), HDMI (High Definition Multimedia Interface) (52) and audio output unit; Audio output unit comprises digital audio and video signals output interface (53) and simulated audio signal output unit (54);
CPU (1) comprises video output module (14) and audio frequency output module (15); CPU (1) is provided with 2 SATA interfaces, Media Independent Interface, serial network interface, DDR2 interface, SDIO interface, I2C interface, I2S bus interface, S/PDIF interface, TS flow transmission end, PB end and nand flash interface; Wherein nand flash interface is also supported Nor Flash memory and the maximum capacity of supporting 8GB, and 2 SATA interfaces are divided into SATA0 interface and SATA1 interface;
Cable digital TV unit (2) is provided with Digital Television radio frequency interface, PB end and TS flow transmission end; Cable digital TV unit (2) is electrically connected with the PB end of CPU (1) by its PB end, is electrically connected with the TS flow transmission end of CPU (1) by its TS flow transmission end;
Blue light front end servo unit (3) is provided with the STAT interface; The STAT interface of blue light front end servo unit (3) is electrically connected with the SATA0 interface of CPU (1);
Network connection unit (4) comprises wireless connections module (41) and Ethernet wired connection module (42); Wireless connections module (41) is provided with the SDIO interface, and wireless connections module (41) is by SDIO interface two-way be electrically connected of its SDIO interface with CPU (1); Ethernet wired connection module (42) is provided with Media Independent Interface and serial network interface, the Media Independent Interface of Ethernet wired connection module (42) is electrically connected with the Media Independent Interface of CPU (1), and the serial network interface of Ethernet wired connection module (42) is electrically connected with the serial network interface of CPU (1);
Each output port of the video output interface (51) of audio frequency and video output unit (5) all is connected with the video output module (14) of CPU (1).
The HDMI (High Definition Multimedia Interface) (52) of audio frequency and video output unit (5) all is electrically connected with the video output module (14) of CPU (1) and audio frequency output module (15);
The digital audio and video signals output interface (53) of the audio output unit of audio frequency and video output unit (5) is connected with the S/PDIF interface of CPU (1); The simulated audio signal output unit (54) of the audio output unit of audio frequency and video output unit (5) is electrically connected with the I2S bus interface of CPU (1);
Memory cell (6) comprises synchronous DRAM (61), flash memories (62) and electronics erasable read-only memory (63); Synchronous DRAM (61) is electrically connected with the DDR2 interface of CPU (1) by its FPDP and control signal port; Flash memories (62) is connected with the nand flash interactive interfacing of CPU (1) by its I/O interface; Electronics erasable read-only memory (63) is connected with the I2C interactive interfacing of CPU (1) by the I2C bus.
2. blue light according to claim 1 is play and the cable digital TV all-in-one, and it is characterized in that: CPU (1) also comprises decoding chip (11), file format resolver (12), high resolution audio and video decoder (13), two gigabit Ethernet controller (16-1), double-H groove weld SB2.0 controller (16-2), flash controller (16-3), IR controller (16-4) and SATA controller (16-5); It is the decoding chip of SMP8644 that decoding chip (11) adopts model, and this decoding chip comprises the MIPS host CPU of Embedded 666MHz dominant frequency, and this host CPU is a kernel with MIPS32 74K (TM); Second MIPS processor is kernel with the MIPS32 4KEc (R) of 333MHz dominant frequency, and it is a floating-point coprocessor; The dominant frequency of the 3rd MIPS processor is 333MHz, and it is a safe processor;
High resolution audio and video decoder (13) support to comprise MPEG-1, MPEG-2, H.264, the decoding of the video format standard of WMV9, AVS and the decoding that comprises the audio format standard of PCM, dolby Digital, avs audio, mpeg1-3, mpeg-4 AAC and WMA9;
Video output module (14) is an image back end processing module, and this image back end processing module is supported functions such as video digital-to-analogue conversion, Gamma correction, film reduction technique, frame rate conversion, deblocking filtering, noise reduction, image-zooming and two dimensional image processing; Audio frequency output module (15) comprises that a dominant frequency is the audio digital signal processor of 333MHz, EQ, the 3D that is responsible for audio frequency output around etc. post-processed.
3. blue light according to claim 2 is play and the cable digital TV all-in-one, and it is characterized in that: CPU (1) also is provided with 2 USB interface; Memory cell (6) also comprises hard disk (64) and USB memory device (65); Hard disk (64) is 500 to 1500GB harddisk memory, is connected alternately with CPU (1) by the SATA1 interface; When using, USB memory device (65) is connected alternately with CPU (1) by 2 USB interface.
4. blue light according to claim 2 is play and the cable digital TV all-in-one, it is characterized in that: cable digital TV unit (2) are wired digital TV in high resolution receiver modules, comprise that RF tuner (21), UTI main interface (22), UTI are from interface (23), TS programme information processing module (24), program descrambling module (25), central processing unit (26), memory (27), ISO7816 intelligent card interface (28) and smart card (29); RF tuner (21) is provided with the Digital Television radio frequency interface; The output of RF tuner (21) is connected with UTI main interface (22), UTI main interface (22) is connected alternately with the mode of TS programme information processing module (24) by the USB parallel data, UTI main interface (22) is connected from the mode of interface (23) by the USB serial data alternately with UTI, TS programme information processing module (24) and two-way electrical connection of program descrambling module (25), central processing unit (26) and ISO7816 intelligent card interface (28), memory (27), TS programme information processing module (24), program descrambling module (25) all connects alternately, and smart card (29) inserts ISO7816 intelligent card interface (28) in use and is electrically connected with ISO7816 intelligent card interface (28); UTI is provided with PB end and TS flow transmission end from interface (23); UTI is connected with the PB end of CPU (1) from the PB end of interface (23), and UTI is connected with the TS flow transmission end of CPU (1) from the TS flow transmission end of interface (23).
5. blue light according to claim 4 is play and the cable digital TV all-in-one, it is characterized in that: the operating frequency range of cable digital TV unit (2) 111 to 862MHz, channel bandwidth is 8MHz, input impedance is 75 ohm, demodulation mode supports that 16QAM, 32QAM, 64QAM, 128QAM and 256QAM, range of symbol rates are 3.6 to 6.952Mbaud.
6. blue light according to claim 2 is play and the cable digital TV all-in-one, it is characterized in that: blue light front end servo unit (3) is that a Blu-ray Disc reads the unit with imprinting, comprises servo circuit (31), synchronous DRAM (32), flash memories (33), loader (34), radio frequency amplifier (35), optically read shaven head (36) and drive circuit (37) based on digital signal processor; The model of the chip that adopts based on the servo circuit (31) of digital signal processor is NT90912, this chip is supported the data computation of the servo EQ of high sampling rate by the kernel of two DSP, support FSM, ETM, EFM+, EFM modulation system, also support CBHD/DVD/CD; Synchronous DRAM (32), flash memories (33) and radio frequency amplifier (35) all are connected alternately with servo circuit (31); Flash memories (33) is used for the control program of storing servo circuit (31), the ephemeral data when synchronous DRAM (32) storing servo circuit (31) is handled; The control signal output ends of servo circuit (31) is electrically connected with the control end of drive circuit (37), and the output of drive circuit (37) is electrically connected with the power end of the corresponding motor of loader (34); Loader (34) comprises motor and corresponding CD bearing device etc., is used for loading and driving CD; Optically read shaven head (36) is the integrated shaven head of CBHD blue light/ruddiness, and radio frequency amplifier (35) is connected alternately with optically read shaven head (36); The model of radio frequency amplifier (35) is NT90902, and radio frequency amplifier (35) has the bandwidth of 60MHz, supports the differential signal input of CBHD/DVD/CD, supports the TE of 3 bundles, PP, DPP to detect, and supports APC;
Servo circuit (31) is provided with the STAT interface.
7. blue light according to claim 1 is play and the cable digital TV all-in-one, and it is characterized in that: the model of the wireless connections module (41) of network connection unit (4) is SWL-A20S, based on the 802.11n standard, and backward compatible 802.11a/b/g; The model of Ethernet wired connection module (42) is RTL8201CP, and Ethernet wired connection module (42) comprises the physical chip of supporting the 10/100M transmission and the transmitter that is connected alternately with physical chip, and transmitter is provided with the RJ-45 interface.
8. blue light according to claim 1 is play and the cable digital TV all-in-one, and it is characterized in that: video output interface (51) comprises composite video broadcast singal output port, video component terminal output port and S terminal output port;
HDMI (High Definition Multimedia Interface) (52) is supported HDMI 1.3a standard, the format standard of the highest support 1080P;
Digital audio and video signals output interface (53) is a digital audio coaxial output line mouth; Simulated audio signal output unit (54) comprises an audio digital to analog converter (54-1) and the stereo left and right sound channels output port that is connected with audio digital to analog converter (54-1), and simulated audio signal output unit (54) is electrically connected by the I2S bus interface of its audio digital to analog converter (54-1) with CPU (1).
9. blue light according to claim 1 is play and the cable digital TV all-in-one, and it is characterized in that: the synchronous DRAM (61) of memory cell (6) comprises that 2 32MX16 organizational forms, capacity are DDR2 sdram memory device and 2 DDR2 sdram memory devices that 64MX16 organizational form, capacity are 1G of 512M; Flash memories (62) is the NAND type flash memories of 128Mbit; Electronics erasable read-only memory (63) is the EEPROM of 16k position; The ephemeral data that ephemeral data when the internal memory of 2 512M capacity in the synchronous DRAM (61) of memory cell (6) is used for storing CPU (1) decoding processing, the internal memory of 2 1G capacity in the synchronous DRAM (61) are used for storing CPU (1) when carrying out system management; Flash memories (62) is used for the storing software control program; Electronics erasable read-only memory (63) is used for depositing the hardware setting data.
10. blue light according to claim 1 and 2 is play and the cable digital TV all-in-one, it is characterized in that: also comprise the VFD display screen that is fixed on the front panel, be arranged on the front panel circuit board in the shell and be arranged on receiver of remote-control sytem (7) on the front panel;
CPU (1) also is provided with remote signal input and high-speed synchronous serial line interface;
Receiver of remote-control sytem (7) is an I.R. infrared receiving device, is provided with the remote signal output; The remote signal output of receiver of remote-control sytem (7) is electrically connected with the remote signal input of CPU (1);
Also be provided with the control button device that comprises power switch button device, channel switch button device, function switching push button device, volume adjusting button device on the front panel; VFD display screen and each control button device all are electrically connected with the front panel circuit board; Be electrically connected by the high-speed synchronous serial port between the output of the above-mentioned device of front panel circuit board and the CPU (1).
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| Application Number | Priority Date | Filing Date | Title |
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| CN 201120118108 CN202050482U (en) | 2011-04-20 | 2011-04-20 | All-in-one machine for blue light playing and cable digital television |
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| CN 201120118108 CN202050482U (en) | 2011-04-20 | 2011-04-20 | All-in-one machine for blue light playing and cable digital television |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157185A (en) * | 2011-04-20 | 2011-08-17 | 新科电子集团有限公司 | All-in-one machine of blue ray player and cable digital television |
| CN103297825A (en) * | 2012-02-24 | 2013-09-11 | 北京四达时代软件技术股份有限公司 | Multi-media portable terminal for achieving terrestrial digital television |
-
2011
- 2011-04-20 CN CN 201120118108 patent/CN202050482U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102157185A (en) * | 2011-04-20 | 2011-08-17 | 新科电子集团有限公司 | All-in-one machine of blue ray player and cable digital television |
| CN103297825A (en) * | 2012-02-24 | 2013-09-11 | 北京四达时代软件技术股份有限公司 | Multi-media portable terminal for achieving terrestrial digital television |
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