CN2888795Y - Combination circuit board - Google Patents
Combination circuit board Download PDFInfo
- Publication number
- CN2888795Y CN2888795Y CN 200520043708 CN200520043708U CN2888795Y CN 2888795 Y CN2888795 Y CN 2888795Y CN 200520043708 CN200520043708 CN 200520043708 CN 200520043708 U CN200520043708 U CN 200520043708U CN 2888795 Y CN2888795 Y CN 2888795Y
- Authority
- CN
- China
- Prior art keywords
- signal processor
- signal
- circuit
- terminal
- digital
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Abstract
The utility model relates to a combinational circuit board, which is provided with an analog signal processor, a digital signal processor, a turner and a plurality of signal sockets. The turner transforms the received high frequency signal to intermediate frequency signal and transmits the intermediate frequency signal to the analog signal processor. And after the signal is treated by the analog signal processor, the RGB signal is transmitted to the digital signal processor. The utility model can reduce the occupied area of the circuit board and improve the electrical performance wherein the utility model can be firmly installed and has shorter signal path and high anti-electromagnetic interference.
Description
Technical field
The utility model relates to electronic applications, relates in particular to a kind of combination circuit plate that analogue signal processor and digital signal processor are set on same circuit board.
Background technology
The TV signal that China TV station broadcasts also all is analog signal at present.The digital type colour television receiver of producing (yet claiming the digital television receiver) is not the television set of receiving digital television signal now, and the signal that it receives remains anolog TV signals.The difference of digital type colour television receiver and general color television receiver is: it receives anolog TV signals, by mould/number (A/D) conversion, analog signal is become digital signal, then digital signal is handled, is transmitted or stores; The general color television receiver is then directly handled, is transmitted the anolog TV signals that receive.In a word, the digital type colour television machine is exactly the color TV set that adopts Digital Signal Processing that TV signal is handled.
So the digital type colour television machine comprises analog circuit and digital circuit.Because by high-frequency signal that antenna received and the intermediate-freuqncy signal that obtains through mixing, frequency is all very high, current mould/number (A/D) switch technology can't be handled so high signal of frequency economically.So digital colour TV medium-high frequency and intermediate-frequency circuit still adopt and the same analog circuit of ordinary colour TV set.At intermediate-frequency circuit to the signal demodulation, obtain vision signal and second accompanying sound intermediate frequency signal (or audio signal) after, digital colour TV promptly carries out mould/number (A/D) conversion to it, and analog signal is become digital signal, carries out Digital Signal Processing.Treated digital signal finally also will be passed through D/A (D/A) change-over circuit, becomes analog signal again, amplifies (analog circuit) de-energisation picture tube through video again, amplifies (analog circuit) through audio power and removes to promote loudhailer.The digital type colour television receiver is two (front end: high, intermediate-frequency circuit in fact; Rear end: video, audio frequency amplifier) adopt analog circuit, middle (video, Audio Signal Processing) adopts digital circuit.
The digital type colour television receiver is owing to adopted very lagre scale integrated circuit (VLSIC), digital image processing techniques and digital audio treatment technology have been used, therefore picture quality and Television Sound Quality all obviously improve, function increases greatly, as passing through storage and processing to digital signal, realize times field frequency, times line frequency scanning, eliminated the screen flicker phenomenon, also can carry out the digitlization processed by the total line traffic control of I2C to second accompanying sound intermediate frequency signal and audio signal, tonequality is had clear improvement, noise is obviously suppressed, and acoustics significantly promotes.Owing to adopted the advanced digital processing technology and the integrated circuit of high integration, thus realized many pictures picture-in-picture, multiple functions such as key frame is static, sprite is static, picture zoom, picture out picture.In addition, after the circuit digitalization of digital type colour television machine, its peripheral cell is few, printed board utilance height, and production technology is good, and favourable reducing cost improved reliability of products, uses maintenance also more convenient.
Yet, the main circuit board of existing digital type colour television receiver all is that the circuit modification at existing simulated television receiver forms, the main circuit board of simulated television receiver adopts the lamina structure, power supply, line-scan circuit, field-scanning circuit, analog signal processing circuit and audio power amplifier circuit all are arranged on the single layer board, and on this circuit board, be provided with a slot, digital signal processing circuit is arranged at an independent double-layer circuit board, vertically is connected to single layer board by slot.Though design cost has been saved in such design, the digital circuit board of only need planting on original circuit board is just passable, but, do not meet the compact requirement of present electronic equipment because double-layer circuit board perpendicular to single layer board, has taken very big volume.
The utility model content
The purpose of this utility model is to provide a kind of combination circuit plate that analogue signal processor and digital signal processor are set on same circuit board.
The purpose of this utility model realizes by following technical method: combination circuit plate is provided with analogue signal processor, digital signal processor, tuner and some signal plug receptacles; Wherein tuner transfers out analogue signal processor after the high-frequency signal that receives is converted to intermediate-freuqncy signal, and after signal was handled through analogue signal processor, rgb signal outputed to digital signal processor.
The signal plug receptacle comprises S terminal, SCART socket, AV terminal and VGA terminal, S terminal, SCART socket, AV terminal output to analogue signal processor with analog video signal, and digital signal processor receives the digital video signal from AV terminal and VGA terminal.
Combination circuit plate disclosed in the utility model, its advantage shows: reduced the volume that circuit board takies; Improved electric property; Install firmly; Signal path is shorter, and anti-electromagnetic interference capability is strong.
Description of drawings
Fig. 1 is installed to the schematic diagram of individual layer sub-circuit board for the utility model combination circuit plate.
Embodiment
See also Fig. 1, the utility model combination circuit plate 2 is installed to individual layer sub-circuit board 1, and combination circuit plate 2 is a multilayer circuit board.Wherein individual layer sub-circuit board 1 is provided with power supply 11, line-scan circuit 12, field-scanning circuit 13 and audio power amplifier circuit 14, and the connected mode of above element is identical with the technology of existing color television set, does not give unnecessary details in detail at this.
Single layer board 1 forms a breach that is roughly rectangle in the lower left corner, combination circuit plate 2 is arranged in this breach.Combination circuit plate 2 is provided with analogue signal processor 21, digital signal processor 22, tuner 23 and various signal plug receptacle, these signal plug receptacles comprise S (SEPARATE separates) terminal 24, SCART (Syndicat francais des Constructeurs d ' AppareilsRadio et Television) socket 25, AV (video) terminal 26 and VGA (Video Graphics Array) terminal 27.Element on the combinations thereof circuit board 2 electrically connects by the element on connector and the single layer board 1.Single layer board 1 and combination circuit plate 2 are formed an integral type circuit board.Wherein tuner 23 transfers out analogue signal processor 21 after the high-frequency signal that receives is converted to intermediate-freuqncy signal, S terminal 24, SCART socket 25, AV terminal 26 also can output to analog video signal analogue signal processor 21, after signal is handled through analogue signal processor 21, audio signal outputs to audio power amplifier circuit 14, RGB (red, green, blue) signal outputs to digital signal processor 22.Digital signal processor 22 also can receive the digital video signal from AV terminal 26 and VGA terminal 27, and the output scanning signal is to field-scanning circuit 13 and line-scan circuit 12 after the processing of digital signal processor 22 of above-mentioned signal process.
The utility model compared with prior art has the following advantages:
1. reduced the volume that the multilayer sub-circuit board takies;
2. the multilayer sub-circuit board of original insertion slot only comprises digital circuit, will simulate letter now Multilayer circuit board is also put in number processing section, has improved electric property.
3. combination circuit plate one of the present utility model is installed in the cabinet of television set, install firmly, And existing digital circuit board is inserted in the slot, and is easily loosening.
4. the signal path in the existing digital circuit board is long, and signal of the present utility model road The footpath is shorter, has reduced the possibility of electromagnetic interference.
Claims (1)
1, a kind of combination circuit plate, be used for being installed in the breach that one of single layer board formation is roughly rectangle, and can form an integral type circuit board with single layer board, it is characterized in that combination circuit plate is provided with analogue signal processor, digital signal processor, tuner and various signal plug receptacle, comprise S terminal, SCART socket, AV terminal and VGA terminal, and described each element electrically connects by the element on connector and the single layer board, and wherein tuner connects analogue signal processor; S terminal, SCART socket, AV terminal also connect analogue signal processor; Analogue signal processor is connected respectively to the audio power amplifier circuit and the digital signal processor of single layer board; Digital signal processor connects AV terminal and VGA terminal; Digital signal processor also is connected with line-scan circuit with the field-scanning circuit of single layer board.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520043708 CN2888795Y (en) | 2005-07-22 | 2005-07-22 | Combination circuit board |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520043708 CN2888795Y (en) | 2005-07-22 | 2005-07-22 | Combination circuit board |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2888795Y true CN2888795Y (en) | 2007-04-11 |
Family
ID=38047366
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520043708 Expired - Fee Related CN2888795Y (en) | 2005-07-22 | 2005-07-22 | Combination circuit board |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2888795Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101610369A (en) * | 2009-06-10 | 2009-12-23 | 东杰电气(中国)有限公司 | A kind of core of panel television |
| CN107135453A (en) * | 2017-06-16 | 2017-09-05 | 深圳天珑无线科技有限公司 | The method and terminal of a kind of signal transacting |
-
2005
- 2005-07-22 CN CN 200520043708 patent/CN2888795Y/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101610369A (en) * | 2009-06-10 | 2009-12-23 | 东杰电气(中国)有限公司 | A kind of core of panel television |
| CN101610369B (en) * | 2009-06-10 | 2014-01-22 | 东杰电气(中国)有限公司 | Core of panel television |
| CN107135453A (en) * | 2017-06-16 | 2017-09-05 | 深圳天珑无线科技有限公司 | The method and terminal of a kind of signal transacting |
| CN107135453B (en) * | 2017-06-16 | 2020-05-12 | 江苏沃顿数字技术有限公司 | Signal processing method and terminal |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20070411 Termination date: 20100722 |