The utility model content
In view of this, main purpose of the present utility model is to provide a kind of television set, with the audio frequency and video picture of realizing that output easily receives.
A kind of television set that the utility model provides comprises, processing television signals unit 10: also comprise:
Signal conversion unit 20 is connected with processing television signals unit 10, is used for the audio-video signal that decoding generates is converted to respectively the audio signal and the Low Voltage Differential Signal of consolidation form;
Audio power amplifier processing unit 30 is connected with signal conversion unit 20, is sent to tv speaker 70 after the audio signal processing and amplifying that is used for received signal converting unit 20 is exported and plays;
Screen drives processing unit 40, is connected with signal conversion unit 20, is sent to tv display screen 60 after the Low Voltage Differential Signal processing that is used for signal conversion unit 20 is exported and shows;
Power module 80 is used to above-mentioned each module that power supply is provided.
By last, audio signal and Low Voltage Differential Signal that the audio-video signal that processing television signals unit 10 decoding is generated by signal conversion unit 20 is converted to consolidation form respectively drive processing unit output by audio power amplifier processing unit and screen respectively, have realized the output of TV audio frequency and video easily.
Wherein said processing television signals unit 10 comprises:
Electronic tuning unit 102 is used to receive the intermediate-freuqncy signal that television high frequency signal and frequency-selecting go out the broadcasting channel of wanting;
Electronic countermodulation device 103 is connected with electronic tuning unit 102, and the digital television signal that is used for being received carries out encoding and decoding to be handled, and generates the TS transport stream;
Master chip 101 connects respectively at electronic tuning unit 102, electronic countermodulation device 103, is used for receiving and handling described medium-frequency TV signal and/or TS transport stream, generates audio-video signal.
By last, can realize the TV signal that is received is carried out decoding processing.
Wherein, described processing television signals unit 10 also comprises: PCMCIA 104, are connected with master chip 101 with electronic countermodulation device 103, offer master chip 101 after being used for the TS transport stream of encrypting is decrypted.
By last, can realize deciphering to the TS stream signal of encrypting.
Wherein, signal conversion unit 20 comprises: based on the control module 201 of X86 framework.
By last, adopt the X86 framework, can realize that multitask handles simultaneously, improve the compatibility that various signals inputs are handled simultaneously.
Wherein, also comprise: system control unit 50, be used to receive user instruction, drive processing unit 40 according to instruction to described signaling control unit (20), audio power amplifier processing unit (30) and screen and send control information, the start and the standby sequential of control television set.
By last, by system control unit each cell operation is unified control, realize the start and the standby sequential of control television set.
Wherein, described audio power amplifier processing unit 30, screen drive processing unit 40 system control units 50 and are arranged on the back-end system module board.
By last, be arranged on the circuit board, form standard component, be convenient to independent making.
Wherein, the audio power amplifier processing unit 30 on described television signal converting unit 20 and the back-end system module board, screen drive processing unit 40 system control units 50 and are connected by bus.
By last, connect by bus mode, be convenient to plug and change conveniently.
Wherein, the processing television signals unit 10 of described television set, signal conversion unit 20, audio power amplifier processing unit 30, screen drive processing unit 40 system control units 50 and are arranged on the circuit board.
By last, can further realize the miniaturization of product.
Embodiment
Shown the schematic diagram of the utility model television set first embodiment as Fig. 1, having comprised: processing television signals unit 10, signal conversion unit 20, audio power amplifier unit 30, screen driver element 40, system control unit 50, display screen 60, loud speaker 70 and power module 80.
Wherein, audio power amplifier processing unit 30, screen drive processing unit 40 and system control unit 50 can be integrated on the same circuit board, forms the back-end system module.
Processing television signals unit 10 is used for the TV signal, the audio-video signal that receive are carried out decoding processing.
The schematic diagram of processing television signals as shown in Figure 2 unit 10 comprises master chip 101, electronic tuning unit 102, electronic countermodulation device 103, personal computer memory card international federation module (PCMCIA) 104, memory module 107, audio-video signal output port 105 and data transmission port 106.
Wherein, the high-frequency signal that described electronic tuning unit 102 is used to receive, and described high-frequency signal frequency-selecting is gone out the intermediate-freuqncy signal of the broadcasting channel of wanting.
Described electronic tuning unit 102 comprises analog tuner module and digital tuning module.The analog tuner module is used for the high frequency analog signals that receives is reconciled out analog intermediate frequency signal, and the process of analog tuner comprises sound accompaniment filtering and image filtering.The analog intermediate frequency signal of output exports master chip 101 to.The digital television signal that the digital tuning module is used for receiving solves the digital television signal of the broadcasting channel of wanting, and exports electronic countermodulation device 103 to by digital output end.As adopting model is the electronic tuning unit of JSS-80T.
Electronic countermodulation device 103 is connected with electronic tuning unit 102, and the digital television signal that is used for being received carries out encoding and decoding to be handled, and generates the TS transport stream.As adopting model is the electronic countermodulation device of ATBM884x.
In the present embodiment, for unencrypted digital television signal, the TS transport stream that electronic countermodulation device 103 generates directly exports master chip 101 to.And for the digital television signal of encrypting, the encryption TS transport stream that electronic countermodulation device 103 will generate is sent to PCMCIA 104 and is decrypted.
PCMCIA 104 is connected with electronic countermodulation device 103, be used for being decrypted processing to encrypting the TS transport stream, and the TS transport stream after will deciphering exports master chip 101 to.
Master chip 101 is connected with sound accompaniment filter, image filter, electronic countermodulation device 103, PCMCIA 104, memory module 107, audio-video signal output port 105 and data transmission port 106 respectively, be used for the various TV signal that received are carried out decoding processing, and by 105 outputs of audio-video signal output port.The TV signal that master chip 101 is received not only comprises above-mentioned accompanying sound intermediate frequency signal, image intermediate frequency signal and TS transport stream, also receives following signal by corresponding interface: audio-video signal (AV), brightness color difference signal (YUV), video and graphic matrix signal (VGA), harmless audio-video signal (HDMI) and audio signal (AUDIO).Described master chip 101 receives above-mentioned TV signal, carries out buffer memory by memory module 107, after carrying out decoding processing, by sound, the vision signal output of audio-video signal output port 105 with above-mentioned decoding.Wherein, described memory module 107 comprises flash memory (FLASH) and internal memory (MEMORY), and can be by the processing speed of upgrading memory size lifting to audio-video signal.Master chip 101 also carries out the transmission of control information by data transmission port 106 and signal conversion unit 20.As adopting model is the chip of BCM3551, PW1306.
Signal conversion unit 20 is connected with processing television signals unit 10, and the processing television signals unit 10 handled audio-video signals that are used for receiving are converted to the audio signal and the Low Voltage Differential Signal (LVDS Low Voltage Differential Signaling) of consolidation form respectively.As adopting model is the chip of DS92LV18, APA150.
Signal conversion unit 20 as shown in Figure 3 comprises control module 201, audio-video signal input port 202, Low Voltage Differential Signal output port 203, audio output port 204, first data transmission port 205 and second data transmission port 206.
Wherein, control module 201 is by the decoded audio-video signal of audio-video signal input port 202 receiver processing television signals unit 10 by its audio-video signal output port 105 outputs, after carrying out conversion process, export the Low Voltage Differential Signal of consolidation form and audio signal respectively to the back-end system module by Low Voltage Differential Signal output port 203, audio output port 204.
Described signal conversion unit 20 also comprises USB interface, the HDMI interface that is connected with control module 201, receives the audio-video signal of other external equipments (IPod, USB flash disk, high definition hard disk) by above-mentioned port.Further, also the network port can be set, control module 201 is connected with internet by the network port, receive the network audio-video signal.
In addition, described signal conversion unit 20 also can be provided with audio port (SPDIF) and microphone port (MIC/EP), all is connected with control module 201, and the user can pass through the direct I/O audio-frequency informations of equipment such as microphone, earphone.
Control module 201 in the present embodiment in the signal conversion unit 20 can be selected the processor of X86 framework, the processor of X86 framework is exactly the processor that has adopted the Intel x86 instruction set, has following advantage: at first have the multidata function of exchange, realize realizing exchanges data with multiple external equipment by the network port, audio frequency and video transmit port, USB port etc.Secondly can carry out encoding and decoding to the file of different-format.Application software based on the processor of X86 framework is complete in addition, can realize more application.Be that at last popularization is stronger, the used processor of most on the market PC all is the X86 architecture processor.As the complete series of the processor family of Intel except that the IA-64 framework, ATOM processor, AMD, also have the complete series processor of VIA all to adopt the X86 framework.
Audio power amplifier processing unit 30 can connect the audio output port 204 of signal conversion unit 20 by its audio input port (not shown), the audio signal that is used for the consolidation form of received signal converting unit 20 outputs, by its inner amplifying circuit audio signal is carried out processing and amplifying, export loud speaker 70 to.As adopting the ALC family chip.
Screen drives processing unit 40 also connects signal conversion unit 20 by Low Voltage Differential Signal input port (not shown) Low Voltage Differential Signal output port 203, the Low Voltage Differential Signal that is used for 20 outputs of received signal converting unit, utilize the frequency multiplication conversion of its inner logic gates realization, export the low-voltage differential frequency-doubled signal to display screen 60 Low Voltage Differential Signal; In addition, also be connected with system control unit 50, be used for the control information of receiving system control unit 50 outputs, the conditioning signal backlight of display screen 60 backlight illuminations is adjusted in output.As adopting chipset Intel915G, 915GV, 945G.
System control unit 50 is used to receive user instruction, sends control information according to instruction, and the start and the standby sequential of control television set also are used to drive audio power amplifier processing unit 30 and screen drives processing unit 40.Described system control unit 50 comprises central processing unit (MCU), wireless receiving port and data transmission port.As adopting RT series or HIP family chip.
Power module 80 is used for to above-mentioned module for power supply.
Controlled step to system control unit 50 specifically describes below, is controlled to be example with start.System control unit 50 receives the start-up command that user control terminal (remote controller, PAD) sends, send power control signal and screen control signal by data transmission port to power module 80, power module 80 receives above-mentioned control signal, to described television signal processing unit 10 and system control unit 50 out-put supply power supply signals.System control unit 50 is to signal conversion unit 20 output negative pulses, control module 201 in the signal conversion unit 20 starts after detecting level translation by second data transmission port 206, and pass through the above-mentioned pulse signal of first data transmission port, 205 outputs to processing television signals unit 10, processing television signals unit 10 by data transmission port 106 received pulse signals (being start-up command) after, the decoding start-up picture, and export the start-up picture signal to signal conversion unit 20, signal conversion unit 20 exports screen driving processing unit 40 to after described picture signal conversion is produced Low Voltage Differential Signal, the start-up picture signal finally demonstrates start-up picture LOGO at display screen 60 after realizing the frequency multiplication conversion, the audio frequency voiced process is identical with video display process, repeats no more herein.Show the current potential sequential of system control unit 50 control display screen, 60 starts and standby as Fig. 4, system control unit 50 at first drives processing unit 40 output high level to screen, secondly drive processing unit 40 to display screen 60 output Low Voltage Differential Signals by screen, at last to display screen 60 outputs conditioning signal backlight, adjust the backlight illumination of display screen 60, finish the start step.In addition, the step that system control unit 50 carries out Opportunity awaiting control for linear is identical with above-mentioned steps, and difference is the variation of pulse.
In addition, the schematic diagram of the utility model television set second embodiment as shown in Figure 5 can adopt interface to connect between each module.In the middle embodiment of Fig. 5-Fig. 7, as processing television signals of the present utility model unit 10, the X86 system processing unit is as signal conversion unit 20 by the movement processing unit.
Further, can also adopt the schematic diagram of the utility model television set the 3rd embodiment that goes out as shown in Figure 6, wherein the back-end system module selects golden finger to be connected with the connected mode between the X86 system processing unit, promptly connect by data/address bus, can improve signaling rate thus, increase the stability of signal transmission.
Further, the schematic diagram of the utility model television set the 4th embodiment as shown in Figure 7, movement processing unit, X86 system processing unit and back-end system module can be integrated on the same mainboard, connect by the mainboard wiring between each module, thus, can save the space of television set backboard and save cost.
Wherein, the communication signal among Fig. 5-Fig. 7 is used to set up the communication between two modules, and control signal promptly comprises certain control command.All can transmit by data transmission port.
The above only is preferred embodiment of the present utility model; not in order to restriction the utility model; all within spirit of the present utility model and principle, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection range of the present utility model.