CN101335844A - Television set - Google Patents
Television set Download PDFInfo
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- CN101335844A CN101335844A CNA2007100166844A CN200710016684A CN101335844A CN 101335844 A CN101335844 A CN 101335844A CN A2007100166844 A CNA2007100166844 A CN A2007100166844A CN 200710016684 A CN200710016684 A CN 200710016684A CN 101335844 A CN101335844 A CN 101335844A
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- signal
- television set
- circuit
- control circuit
- processing board
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Abstract
The invention discloses a television set, including a signal processing board, a display boards, as well as ca sequence control circuit and driving circuit for controlling the display screen to output images, wherein the sequence control circuit is provided on the signal processing board, for receiving video signals coded and output by an image processing module; the driving circuit is provided on the display board, which is electrically connected to the output terminal of the sequence control, and further generates driving signals and outputs to the input terminal of the display screen. The present invention arranges the sequential processing circuit on the signal processing board on the front end, can optimize typesetting and wire laying, can improve the efficiency of wire laying, and can reduce the use of connectors between repeat components and boards, thereby reducing area and cost of the circuit board and further reducing the complete machine fabricating cost of the television set. At the same time, owing to a reduction in the use of components, typesetting and wire laying can be optimized, so that the circuit structure becomes relative simple and contributes to the advance of television set complete machine manufacturability and reliability.
Description
Technical field
The present invention relates to tv mechanism technology for making field, specifically, relate to a kind of improvement of television set internal circuit board.
Background technology
Traditional television set is in its image display process, receiving vision signal by tuner changes after circuit module such as converter and primary processor is handled line by line through decoder, the interlacing of television set inside, after by coding circuit encoding video signal being handled, vision signal behind the output encoder is to sequential control circuit, finish drive controlling by described sequential control circuit control corresponding driving circuit, and then realize that the output of video image on display screen shows display screen.
Conventional television is in the design process of circuit board, generally all be that described decoder, interlacing are changeed circuit module such as converter and primary processor design line by line at signal-processing board, also can be described as on the main decoder plate, and described sequential control circuit and design of drive circuit are on display panel, connect display screen by described display panel, finish the demonstration control of video image.Owing on display panel, need to be provided with sequential control circuit and drive circuit, so just need to increase the area of display panel, and then cause the increase of television set manufacturing cost.On the other hand, because described sequential control circuit is arranged on the display panel, and this sequential control circuit must carry out data communication with the signal-processing board of front end, and the connector between plate and the plate so just must be set, thereby has further increased the manufacturing cost of tv product.
In addition, because the signal-processing board of described sequential control circuit and front end all is the function of execution signal processing, and in the above-mentioned prior art it is divided on two plates, so structure and the wiring more complicated that becomes is unfavorable for the raising of whole aircraft reliability.
Summary of the invention
Purpose of the present invention is providing the television set that a kind of cost is low, reliability is high.
For addressing the above problem, the present invention is achieved by the following technical solutions:
A kind of television set comprises sequential control circuit and drive circuit that signal-processing board, display panel, image processing module, display screen and control display screen are exported; Wherein, described sequential control circuit is arranged on the signal-processing board, receives the vision signal of image processing module output; Described drive circuit is arranged on the display panel, connects the output of described sequential control circuit, and then the generation drive signal exports described display screen to.
Wherein, in described sequential control circuit, include time schedule controller and DC-to-DC converter; Wherein, the input of described time schedule controller receives the vision signal of image processing module output, and then the generation clock signal exports described drive circuit to; The input of described DC-to-DC converter connects a DC power supply, carries out exporting described drive circuit to behind the voltage transformation.
In addition, in described sequential control circuit, also include frame buffer, be electrically connected on described time schedule controller.
Further, described drive circuit comprises scan drive circuit and data drive circuit, and its input all is connected with the output of described time schedule controller and DC-to-DC converter, and its output all is connected with the input of display screen.
Further again, described image processing module is arranged on the signal-processing board, comprises that converter, host CPU, convergent-divergent control circuit and video encoder are line by line changeed in Video Decoder, the interlacing of connection successively; The input that connects described time schedule controller by the output of described video encoder.
Preferably, described video encoder is the LVDS video encoder, video signal coding is generated the LVDS Low Voltage Differential Signal transfer to described time schedule controller.Corresponding with it, the preferred LCDs of described display screen.
Further again, on described signal-processing board, also be provided with the tuner module, receive the TV radiofrequency signal, and its demodulation generation TV signal and accompanying sound intermediate frequency signal are transferred to respectively in described Video Decoder and the sound accompaniment treatment circuit.
Further, on described signal-processing board, also be provided with the sound accompaniment treatment circuit, receive and handle described audio signal.
In order to make described television set have the reception playing function of high-definition multimedia signal, on described signal-processing board, also be provided with the HDMI decoding chip, receive HDMI high-definition multimedia signal, its decoding generation data image signal and digital accompaniment signal are transferred to described host CPU and sound accompaniment treatment circuit respectively.
Compared with prior art, advantage of the present invention and good effect are: the present invention is by being set to sequential control circuit on the signal-processing board of front end, only keep original drive circuit on the display panel, can optimize row's plate wiring of signal-processing board like this, improve wiring efficient, reduce the use that repeats connector between components and parts and plate and the plate, thereby reduce the area and the cost of display panel, and then the manufacturing cost of reduction television set, the manufacturability and the reliability of operation of lifting complete machine.
Description of drawings
Fig. 1 is the structured flowchart of a kind of signal-processing board of existing television set;
Fig. 2 is the structured flowchart of the display panel that is complementary with signal-processing board shown in Figure 1;
Fig. 3 is the structured flowchart of an embodiment of television signal treatment circuit plate proposed by the invention;
Fig. 4 is the structured flowchart of the display panel that is complementary with signal-processing board shown in Figure 3;
Fig. 5 is the structured flowchart of an embodiment of sequential control circuit among Fig. 3.
Embodiment
The present invention is further detailed explanation below in conjunction with the drawings and specific embodiments.
For a better understanding of the present invention, with the liquid crystal TV set example at first, prior art is done concise and to the point description.As shown in Figure 1, this figure is the structured flowchart of a kind of signal-processing board of available liquid crystal television set, and Fig. 2 is the circuit structure block diagram of the display panel that is complementary with signal-processing board shown in Figure 1.Shown in the most obvious difference of existing television set internal circuit board and TV set circuit plate proposed by the invention be on the design attitude of sequential control circuit.The available liquid crystal television set all is that sequential control circuit is designed on display panel, as shown in Figure 2, LVDS (Low VoltageDifferential Signaling) low-voltage differential signal by LVDS encoder output on the connector received signal disposable plates, and then scan drive circuit in the output timing signal control drive circuit and data drive circuit, to drive the LCDs output image information.Among Fig. 2, in order to set forth conveniently, the represented liquid crystal panel (being liquid crystal display screen) of frame of broken lines also appears among Fig. 2, but it does not belong to the part of described display panel.
With reference to figure 3, illustrate the structured flowchart of a kind of embodiment of television signal disposable plates proposed by the invention.In the present embodiment, be that LCD TV is that example describes with described television set.As shown in Figure 3, signal-processing board is provided with the integral high frequency head module that is used to receive the TV radiofrequency signal, in described tuner module, include successively the tuner, Surface Acoustic Wave Filter and the intermediate frequency amplifier circuit that connect, the TV radiofrequency signal demodulation that TV station is sent, export after being separated into CVBS composite video signal and the 2nd accompanying sound intermediate frequency signal SIF.Wherein, the CVBS composite video signal is through behind the decoder decode, and converter is line by line changeed in outputting video signal to interlacing, interleaved TV signal is converted to progressive-scan signal with the mode of digital processing, to reach the purpose of improving display quality.Described interlacing is changeed line by line, and the output of converter connects primary processor, utilize inner integrated CPU, Scaler convergent-divergent circuit and the normalized circuit of primary processor to carry out exporting the LVDS encoder to after the processing such as convergent-divergent processing, normalization, and then the LVDS Low Voltage Differential Signal that video signal coding Generation Liquid crystal display screen is required, by its differential data end, differential clocks end (signal 0+/-, signal 1+/-, signal 2+/-, signal 3+/-, clock+/-) be connected described sequential control circuit with earth terminal.Described sequential control circuit is to export to display panel shown in Figure 4 behind RSDS (Reduced Swing DifferentialSignaling, the shorten swing difference signal) signal with the LVDS conversion of signals that receives.
With reference to figure 4, illustrate the structured flowchart of a kind of embodiment of the display panel that is complementary with signal-processing board shown in Figure 3.As shown in Figure 4, comprise scan drive circuit and data drive circuit, described scan drive circuit and data drive circuit are used to receive RSDS differential signal and the DC reference voltage from sequential control circuit.
With reference to figure 5, illustrate the structured flowchart of a kind of embodiment of sequential control circuit among Fig. 3.As shown in Figure 5, comprise time schedule controller, the frame buffer that is connected with this time schedule controller, and be connected, realize the DC-to-DC converter of DC boosting conversion with DC power supply.Wherein, described time schedule controller receives from 5 groups of differential signals of LVDS encoder output and 1 tunnel ground signalling, by carry out proofreading and correct and after polar switching handles, generation RSDS signal exports among Fig. 4 in the scan drive circuit and data drive circuit on the display panel.Meanwhile, described DC-to-DC converter becomes DC reference voltage to export in described scan drive circuit and the data drive circuit voltage transitions of DC power supply, drives the liquid crystal display screen output image to control described scan drive circuit and data drive circuit.
In order to improve the integrated level of described signal-processing board, the sound accompaniment treatment circuit is designed simultaneously on described signal-processing board, referring to shown in Figure 3, after carrying out sound accompaniment gating, sound demodulation, volume equilibrium etc. and handle through the sound accompaniment process chip by the 2nd accompanying sound intermediate frequency signal of integral high frequency head output, undertaken exporting loud speaker to after power amplification is handled by power amplifier on the one hand; Connect earphone jack by the earphone discharge circuit on the other hand, realize the switching output of audio signal between loud speaker and earphone.
Simultaneously, in order to improve the compatible receiving ability of television set to multiple audio-video signal source, outside, on television set proposed by the invention, also be provided with AV signal terminal, S-VIDEO signal terminal, YPBPR signal terminal, VGA signal terminal and HDMI signal terminal simultaneously, as shown in Figure 3.Wherein, the AV signal terminal is connected described decoder with the S-VIDEO signal terminal, through decoding processing and interlacing change handle line by line after, be input to described primary processor.According to concrete needs, the selectable connection of described decoder 3D comb filter is carried out Filtering Processing to the vision signal that receives.Described YPBPR signal terminal and VGA signal terminal carry out analog signal after the conversion of digital signal by analog to digital converter, connect described primary processor.And described HDMI (High Definition Multimedia Interface, HDMI (High Definition Multimedia Interface)) signal terminal can be connected with outside high-definition multimedia equipment, receive the HDMI signal source, after the HDMI decoder on the signal-processing board carried out decoding processing, generating data image signal exported described primary processor on the one hand; Generate I on the other hand
2S digital accompaniment signal exports described sound accompaniment treatment circuit to, and then by loud speaker or the sound accompaniment of earphone output program.
Display panel in the present embodiment is owing to reduced connector and described sequential control circuit, thereby the area of whole plank is smaller, only is in actual use to be articulated in that a little pcb board gets final product on the described LCDs.And signal-processing board is owing to increased sequential control circuit, therefore can further optimize and combine the Butut and the cabling of circuit board, and described sequential control circuit can be arranged in the space of signal-processing board free time easily, can not cause the increase of signal-processing board area.
It should be noted that owing to the concrete internal circuit to each functional module in the television set in this embodiment is not inventive point of the present invention place, therefore further do not set forth.Equally, the present invention also is not limited to any described concrete internal circuit, promptly as long as satisfy described sequential control circuit is integrated into television set on the signal-processing board, all in protection scope of the present invention, forms and be not limited to its inner physical circuit.
Above disclosed only is a kind of preferred embodiment of the present invention, can not limit the present invention's interest field certainly with this, and therefore, the equivalent variations according to claim of the present invention is done still belongs to the scope that the present invention is contained.
Claims (10)
1, a kind of television set comprises sequential control circuit and drive circuit that signal-processing board, display panel, image processing module, display screen and control display screen are exported; It is characterized in that: described sequential control circuit is arranged on the signal-processing board, receives the vision signal of image processing module output; Described drive circuit is arranged on the display panel, connects the output of described sequential control circuit, and then the generation drive signal exports described display screen to.
2, television set according to claim 1 is characterized in that: include time schedule controller and DC-to-DC converter in described sequential control circuit; Wherein, the input of described time schedule controller receives the vision signal of image processing module output, and then the generation clock signal exports described drive circuit to; The input of described DC-to-DC converter connects a DC power supply, carries out exporting described drive circuit to behind the voltage transformation.
3, television set according to claim 2 is characterized in that: also include frame buffer in described sequential control circuit, be electrically connected on described time schedule controller.
4, according to claim 1 or 2 or 3 described television sets, it is characterized in that: described drive circuit comprises scan drive circuit and data drive circuit, its input all is connected with the output of described time schedule controller and DC-to-DC converter, and its output all is connected with the input of display screen.
5, television set according to claim 4 is characterized in that: described image processing module is arranged on the signal-processing board, comprises that converter, host CPU, convergent-divergent control circuit and video encoder are line by line changeed in Video Decoder, the interlacing of connection successively; The input that connects described time schedule controller by the output of described video encoder.
6, television set according to claim 5 is characterized in that: described video encoder is the LVDS video encoder, video signal coding is generated the LVDS Low Voltage Differential Signal transfer to described time schedule controller.
7, television set according to claim 6 is characterized in that: described display screen is a LCDs.
8, television set according to claim 5, it is characterized in that: on described signal-processing board, also be provided with the tuner module, receive the TV radiofrequency signal, and its demodulation generation TV signal and accompanying sound intermediate frequency signal are transferred to respectively in described Video Decoder and the sound accompaniment treatment circuit.
9, television set according to claim 8 is characterized in that: also be provided with the sound accompaniment treatment circuit on described signal-processing board, receive and handle described audio signal.
10, television set according to claim 9, it is characterized in that: on described signal-processing board, also be provided with the HDMI decoding chip, receive HDMI high-definition multimedia signal, its decoding generation data image signal and digital accompaniment signal are transferred to described host CPU and sound accompaniment treatment circuit respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100166844A CN101335844A (en) | 2007-06-28 | 2007-06-28 | Television set |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100166844A CN101335844A (en) | 2007-06-28 | 2007-06-28 | Television set |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101335844A true CN101335844A (en) | 2008-12-31 |
Family
ID=40198116
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100166844A Pending CN101335844A (en) | 2007-06-28 | 2007-06-28 | Television set |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101335844A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231217A (en) * | 2016-08-29 | 2016-12-14 | 红河凯丰科技有限公司 | A kind of pcb board, display screen and Novel television |
| CN111028752A (en) * | 2019-11-20 | 2020-04-17 | 深圳市鑫乐意科技有限公司 | Method for converting LVDS signal into RSDS signal |
-
2007
- 2007-06-28 CN CNA2007100166844A patent/CN101335844A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106231217A (en) * | 2016-08-29 | 2016-12-14 | 红河凯丰科技有限公司 | A kind of pcb board, display screen and Novel television |
| CN111028752A (en) * | 2019-11-20 | 2020-04-17 | 深圳市鑫乐意科技有限公司 | Method for converting LVDS signal into RSDS signal |
| CN111028752B (en) * | 2019-11-20 | 2023-09-01 | 深圳市鑫乐意科技有限公司 | Method for converting LVDS signals into RSDS signals |
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Open date: 20081231 |