CN2886949Y - TV set interface circuit - Google Patents
TV set interface circuit Download PDFInfo
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- CN2886949Y CN2886949Y CN 200620080651 CN200620080651U CN2886949Y CN 2886949 Y CN2886949 Y CN 2886949Y CN 200620080651 CN200620080651 CN 200620080651 CN 200620080651 U CN200620080651 U CN 200620080651U CN 2886949 Y CN2886949 Y CN 2886949Y
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- signal
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- television set
- interface
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Abstract
The utility model discloses a TV interface circuit consisting of a main power source, an assistant power source, a main control plate and a sand-bag pulse signal output. The TV shell is provided with a standard interface to realized input and output of the AV signal between the main control plate of the TV and external apparatuses and output of the horizontal field synchronizing signal and the remote control demodulation signal; an IIC bus interface can realize communication between the main circuit board and the assistant circuit board according to the needs of external apparatuses which makes software update and copy of storage information more convenient and enriches TV functions and simplifies development process. With the utility model, one TV can satisfy various needs of different customers which makes the utility model good in acclimatization and worth spreading. Projects for TV of different sizes can be easily transplanted which can satisfy various needs of different customers and makes the utility model high in economic benefits.
Description
Technical field
The utility model belongs to the TV set circuit technical field, specifically, relates to a kind of external interface circuit of television set, is applicable to hotel television-specific machine.
Background technology
At present, employed television set is generally all the same with employed television set in the average family in the hotel, interface circuit is fairly simple, the signal source of supporting is more limited, a television set can not satisfy customers different in the hotel and different specific (special) requirements simultaneously, therefore, the television set function ratio is more single, applicability a little less than.
Summary of the invention
The utility model is simple in order to solve in the prior art hotel special television machine interface circuit, can not satisfy the problem of different customers needs, a kind of novel TV machine interface circuit is provided, make hotel television-specific machine realize one-machine-multi-function by simple circuit configuration, effectively saved and exploited natural resources, better met the demand in different clients and different markets.
For solving the problems of the technologies described above, the utility model is achieved by the following technical solutions:
A kind of television set interface circuit, comprise main power source, auxiliary power, master control borad and sand hill pulse signal output end, described TV shell is provided with a standard interface, in described standard interface, include R, G, B signal input part, a left side/right channel audio signal input, brightness/chroma signal input part, blanking signal output, CVBS signal output part, OK/field sync signal output and remote control demodulation IR signal output part; Wherein, described R, G, B signal input part, a left side/right channel audio signal input, brightness/chroma signal input part connect the respective channel of master control borad in the television set, blanking signal FB, CVBS signal, the remote control demodulation IR signal of master control borad output output to ancillary equipment through described standard interface, the sand hill pulse signal output end connects pulse shaper, the output of shaping circuit connects delegation's field sync signal split circuit, and line synchronizing signal and field sync signal after output separates are exported through described standard interface.
As further qualification to technique scheme, between described main power source and auxiliary power, be connected with a switching diode, the positive pole of described diode connects main power source, negative pole auxiliary connection power supply, auxiliary power connects described standard interface, is the external equipment power supply.The three-way power end of described standard interface connects respectively+5V ,+3.3V ,+the 12V auxiliary power.
Further qualification again as to technique scheme also is provided with an iic bus interface on described TV shell, link to each other with SDA, the SCL bus end of master control borad in the television set.The R of described standard interface, G, B signal input part connect R, G, the B signal input channel of master control borad through rc filter circuit; The CVBS signal of master control borad output connects the base stage of a positive-negative-positive triode, the grounded collector of described triode, emitter connects an auxiliary power through resistance on the one hand, is connected the CVBS signal output part of described standard interface on the other hand with capacitance through the resistance of series connection.Described pulse shaper is formed by connecting by two NPN type triodes, the base stage of one of them NPN type triode connects described sand hill pulse signal output end, collector electrode auxiliary connection power supply, emitter connect the base stage of another NPN type triode, and through a grounding through resistance; The collector electrode of described another NPN type triode connects described auxiliary power through resistance, and connects the input of row field sync signal split circuit, its grounded emitter.It is the decoder realization of 74LS74N that described capable field sync signal split circuit adopts a model, and the reset terminal of described decoder connects described auxiliary power through switch, and the two-way output links to each other with described standard interface.
Compared with prior art, advantage of the present utility model with good effect is: the utility model is according to different clients, the requirement in different markets, on television set, set up the standard interface circuit, interface definition is abundant, can be widely used on the hotel television-specific machine of various types, development process can be effectively simplified in the application of this standard interface, use a hotel television set just can satisfy different clients' diversification requirement simultaneously, have good applicability and very high promotional value, can realize the scheme transplanting of different size complete machine, fully satisfy the requirement of the different customers in hotel, had high economic benefit.
Description of drawings
Fig. 1 is the schematic diagram of the utility model television set standard interface circuit.
Embodiment
Below in conjunction with the drawings and specific embodiments the utility model is done explanation in further detail.
Television set standard interface circuit of the present utility model relies on the abundant UOC3 cassette mechanism platform of functional resources, fully take into account user's various operating positions and various solution, interface definition is abundant, has very strong applicability, and the physical circuit annexation is referring to shown in Figure 1.Described interface circuit is furnished with 3 road power outputs, be respectively+5V ,+12V and+3.3V, through 11 pin of the accurate interface XPZ15 of 34 pin marks, 4 pin and the output of 2 pin, can satisfy the power demands of dissimilar external equipments.Wherein, for+the 5V DC power supply can be switched by main power source and auxiliary power to be provided, main power source output+the SUB_+5V output of the commutation circuit auxiliary connection power supply that the 5V_STB power supply is formed through the switching diode VDZ01 and the VDZ02 of parallel connection, and then link to each other with 11 pin of standard interface XPZ15.When auxiliary power was worked, switching diode VDZ01 and VDZ02 ended, and were provided+5V direct current supply to external equipment by auxiliary power.And when auxiliary power was not worked, switching diode VDZ01 and VDZ02 conducting were provided+5V direct current supply to external equipment by main power source.
AV signal input type is abundant, and standard interface XPZ15 provides multiple input modes such as AUDIO, RGB, Y/C, has strengthened the applicability of television set.Wherein, connect the interface XPZ16 of UOC3 cassette mechanism platform through 31～33 pin of standard interface XPZ15 one road π type capacitance-resistance filter network of respectively hanging oneself respectively from R, the G of outside input, B signal, and then output to display by the video processing circuits of master control borad, realize the output of video image.Bright, carrier chrominance signal Y/C and left and right acoustic channels audio signal AUDIO be respectively through 2,1,5,6 pin of 19,18,20, the 21 pin connecting interface XPZ01 of standard interface XPZ15, and then being connected of realization and UOC3 cassette mechanism platform.
The blanking signal FB of master control borad output is through 1 pin of interface XPZ16,30 pin that resistance R Z06 connects standard interface XPZ15; The signal of remote controller output connects 6 pin of standard interface XPZ15 by 2 pin of interface XPZ10 after demodulation, thereby make external equipment and hotel machine use same remote control to become possibility, and is greatly convenient for users to use.The CVBS vision signal connects the base stage of positive-negative-positive triode VZ01 through 1 pin of interface XPZ09, the grounded collector of described triode VZ01, emitter connects SUB_+5V through resistance R Z02, and the resistance R Z03 through connecting is connected 28 pin of standard interface XPZ15, the CVBS vision signal after external equipment output is amplified with capacitance CZ02.
Connect the pulse shaper of forming by NPN type triode VZ03, VZ05 through interface XPZ07 from the sand hill pulse signal of master control borad output, wherein, 1 pin of interface XPZ07 connects the base stage of triode VZ03, its collector electrode connects SUB_+5V, emitter connects the base stage of triode VZ05 through resistance R Z17, and through resistance R Z14 ground connection.The collector electrode of described triode VZ05 connects SUB_+5V through resistance R Z20 on the one hand, connects input 2 pin of 74LS74N decoder NZ01 on the other hand.Described decoder NZ01 goes out line synchronizing signal and field sync signal with the sand hill pulse signal separation shaping of input, is connected 13 pin and 12 pin of standard interface XPZ15 respectively by its output 6 pin, 3 pin, for follow-up external equipment with better function provides support.Reset terminal 1 pin of decoder NZ01 connects SUB_+5V through switch WZ01, realizes accurately resetting of decoder NZ01.
In addition, on described television set, also be provided with iic bus interface XPZ12, connect the UOC3 cassette mechanism platform by interface XPZ03, XPZ14 respectively, according to the requirement of external equipment, realize the function of major and minor circuit board communication, it is convenient that software upgrading, memorizer information are duplicated.
Television set interface circuit of the present utility model and LCU module are combined closely, and can carry out suitable adjustment according to the difference of LCU module, have enriched interface definition, can be widely used in all dissimilar hotel television-specific machines.Certainly; above-mentioned explanation is not to be to restriction of the present utility model; the utility model also is not limited in above-mentioned giving an example, and variation, remodeling, interpolation or replacement that those skilled in the art are made in essential scope of the present utility model also should belong to protection range of the present utility model.
Claims (8)
1. television set interface circuit, comprise main power source, auxiliary power, master control borad and sand hill pulse signal output end, it is characterized in that: described TV shell is provided with a standard interface, in described standard interface, include R, G, B signal input part, a left side/right channel audio signal input, brightness/chroma signal input part, blanking signal output, CVBS signal output part, OK/field sync signal output and remote control demodulation IR signal output part; Wherein, described R, G, B signal input part, a left side/right channel audio signal input, brightness/chroma signal input part connect the respective channel of master control borad in the television set, blanking signal FB, CVBS signal, the remote control demodulation IR signal of master control borad output output to ancillary equipment through described standard interface, the sand hill pulse signal output end connects pulse shaper, the output of shaping circuit connects delegation's field sync signal split circuit, and line synchronizing signal and field sync signal after output separates are exported through described standard interface.
2. television set interface circuit according to claim 1, it is characterized in that: be connected with a switching diode between described main power source and auxiliary power, the positive pole of described diode connects main power source, negative pole auxiliary connection power supply, auxiliary power connects described standard interface, is the external equipment power supply.
3. television set interface circuit according to claim 2 is characterized in that: also be provided with an iic bus interface on described TV shell, link to each other with SDA, the SCL bus end of master control borad in the television set.
4. according to claim 2 or 3 described television set interface circuits, it is characterized in that: the R of described standard interface, G, B signal input part connect R, G, the B signal input channel of master control borad through rc filter circuit.
5. television set interface circuit according to claim 4, it is characterized in that: the CVBS signal of described master control borad output connects the base stage of a positive-negative-positive triode, the grounded collector of described triode, emitter connects an auxiliary power through resistance on the one hand, is connected the CVBS signal output part of described standard interface on the other hand with capacitance through the resistance of series connection.
6. television set interface circuit according to claim 5, it is characterized in that: described pulse shaper is formed by connecting by two NPN type triodes, the base stage of one of them NPN type triode connects described sand hill pulse signal output end, collector electrode auxiliary connection power supply, emitter connects the base stage of another NPN type triode, and through a grounding through resistance; The collector electrode of described another NPN type triode connects described auxiliary power through resistance, and connects the input of row field sync signal split circuit, its grounded emitter.
7. television set interface circuit according to claim 5, it is characterized in that: it is the decoder realization of 74LS74N that described capable field sync signal split circuit adopts a model, the reset terminal of described decoder connects described auxiliary power through switch, and the two-way output links to each other with described standard interface.
8. television set interface circuit according to claim 7 is characterized in that: the three-way power end of described standard interface connects respectively+5V ,+3.3V ,+the 12V auxiliary power.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080651 CN2886949Y (en) | 2006-01-25 | 2006-01-25 | TV set interface circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200620080651 CN2886949Y (en) | 2006-01-25 | 2006-01-25 | TV set interface circuit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2886949Y true CN2886949Y (en) | 2007-04-04 |
Family
ID=37962033
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200620080651 Expired - Fee Related CN2886949Y (en) | 2006-01-25 | 2006-01-25 | TV set interface circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2886949Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101442638B (en) * | 2008-12-16 | 2013-03-27 | 康佳集团股份有限公司 | Protection method and circuit for television airdrome |
-
2006
- 2006-01-25 CN CN 200620080651 patent/CN2886949Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101442638B (en) * | 2008-12-16 | 2013-03-27 | 康佳集团股份有限公司 | Protection method and circuit for television airdrome |
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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: 20070404 Termination date: 20100225 |