CN205304961U - Automatic switch -over circuit and TV of TV AV interface and weight interface - Google Patents
Automatic switch -over circuit and TV of TV AV interface and weight interface Download PDFInfo
- Publication number
- CN205304961U CN205304961U CN201521111661.8U CN201521111661U CN205304961U CN 205304961 U CN205304961 U CN 205304961U CN 201521111661 U CN201521111661 U CN 201521111661U CN 205304961 U CN205304961 U CN 205304961U
- Authority
- CN
- China
- Prior art keywords
- interface
- pin
- shell fragment
- component
- control device
- 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.)
- Active
Links
Landscapes
- Studio Circuits (AREA)
Abstract
The utility model discloses an automatic switch -over circuit and TV of TV AV interface and weight interface solves the problem of obscuring easily when carrying out manual the switching to the multiplex interface. Wherein, the AV interface is multiplexing with the Y interface, the Y interface adopts the three pin interfaces that have the shell fragment, pb interface and/or pr interface adopt the three pin interfaces that have the shell fragment, TV main control unit's IO pin is connected to Y interface shell fragment end, TV main control unit's a IO pin is also connected respectively to the shell fragment end of pb interface and/or pr interface, when the interface had the terminal to insert, TV main control unit received was high level signal to TV main control unit can distinguish the type of inserting the terminal according to Y interface and pb interface and/or pr interface type's high level signal's number and come automatic switching signal source.
Description
Technical field
This utility model belongs to technical field of circuit design, specifically, relates to automatic switch-over circuit and the TV of a kind of TV AV interface and component interface.
Background technology
TV generally be equipped with input CVBS(CompositeVideoBroadcastSignal, Composite Video Baseband Signal) signal AV interface and input YPbPr component signal component interface. Component interface comprises the Y-signal interface of video input and the Pb signaling interface of input color component and Pr signaling interface.
In order to simplify TV structure design, increase TV appearance design aesthetic feeling, it is possible to reduced the arrangement of Interface Terminal by multiplex interface terminal, for instance, by AV interface and Y interface duplex, to reduce the arrangement of video signal input interface terminal.
The multiplexing of this video input interface terminal, operationally, need to switch different signal sources according to the difference accessing holding wire to adapt to, such as, after inserting YPbPr holding wire, it is necessary to operation TV is switched to component signal source, and after inserting AV holding wire, needing operation TV to be switched to CVBS signal source, so, the video signal of TV input could normally show.
But domestic consumer easily obscures for numerous holding wires, after inserting holding wire, in the signal source that TV is switched to correspondence that can not will be apparent from; Visible, there is manual switching and hold confusing technical problem in the situation of this Interface Terminal multiplexing.
Summary of the invention
The application provides automatic switch-over circuit and the TV of a kind of TV AV interface and component interface, solves to exist when carrying out manual switching for multiplex interface in prior art to hold confusing technical problem.
For solving above-mentioned technical problem, the application is achieved by the following technical solutions:
The automatic switch-over circuit of a kind of TV AV interface and component interface is proposed, including component interface and television master control device; Described component interface includes Y interface, Pb interface and Pr interface; AV interface and described Y interface duplex; Described Y interface, Pb interface and Pr interface all include signal input Pin and ground connection Pin;Described Y interface also includes inputting the pin shell fragment Pin clamped with signal; And the shell fragment Pin of described Y interface connects an I/O pin of described television master control device; Described Pb interface and/or Pr interface also include inputting the pin shell fragment Pin clamped with signal; And the shell fragment Pin of described Pb interface and/or described Pr interface connects an I/O pin of described television master control device respectively; Described television master control device is for the switching according to described Y interface and the amount field dividing control signal source of the high level of described Pb interface and/or the input of Pr interface.
Further, the signal input Pin of described Y interface is connected to pull down resistor, and the shell fragment Pin of described Y interface is connected to pull-up resistor; The signal input Pin of described Pb interface and/or described Pr interface is connected to pull down resistor, and the shell fragment Pin of described Pb interface and/or described Pr interface is connected to pull-up resistor; Wherein, pull-up resistance is high resistance measurement, and configuration pull down resistor is low resistance resistance.
Further, filter capacitor it is connected to over the ground with on the shell fragment Pin of described Y interface; Filter capacitor it is connected to over the ground with on the shell fragment Pin of described Pb interface and/or described Pr interface.
Further, Zener diode it is connected to over the ground with on the shell fragment Pin of described Y interface; Zener diode it is connected to over the ground with on the shell fragment Pin of described Pb interface and/or described Pr interface.
Further, described Zener diode is TVS diode.
A kind of TV is proposed, including the automatic switch-over circuit of TV AV interface and component interface. The automatic switch-over circuit of TV AV interface and component interface includes component interface and television master control device; Described component interface includes Y interface, Pb interface and Pr interface; AV interface and described Y interface duplex; Described Y interface, Pb interface and Pr interface all include signal input Pin and ground connection Pin; Described Y interface also includes inputting the pin shell fragment Pin clamped with signal; And the shell fragment Pin of described Y interface connects an I/O pin of described television master control device; Described Pb interface and/or Pr interface also include inputting the pin shell fragment Pin clamped with signal; And the shell fragment Pin of described Pb interface and/or described Pr interface connects an I/O pin of described television master control device respectively; Described television master control device is for the switching according to described Y interface and the amount field dividing control signal source of the high level of described Pb interface and/or the input of Pr interface.
Compared with prior art, the advantage of the application and have the benefit effect that automatic switch-over circuit and the TV of TV AV interface that the embodiment of the present application provides and component interface, the video signal input interface of multiplexing, namely Y interface, adopt the three Pin Interface Terminals with shell fragment design, increase pull-up resistor on shell fragment Pin, and color component input interface terminal, in one or two in Pb interface and Pr interface, it is also adopted by the three Pin Interface Terminals with shell fragment design; Shell fragment Pin connects pull-up resistor. When interface not having signal terminal insert, shell fragment is clamped together with signal input Pin, then with the shell fragment Pin pull-up resistor being connected and with signal input Pin is connected pull down resistor formation bleeder circuit, when configuring bleeder circuit and making pull down resistor dividing potential drop only small, then to input to the voltage of television master control device also only small at shell fragment Pin place, and television master control device is low level according to what receive; After user operation accesses AV holding wire, Y interface has terminal to insert, then the signal terminal that the shell fragment Pin of Y interface and signal input Pin is inserted into separates so that what input with the shell fragment Pin of the Y interface I/O pin being connected in television master control device is a high level;After user operation accesses component signal line, except Y interface, Pb interface or Pr interface, or Pb interface and Pr interface are simultaneously, signal input Pin separated with shell fragment Pin, make in television master control device with the shell fragment Pin of the Pb interface I/O pin being connected input be a high level, or with the shell fragment Pin of the Pr interface I/O pin being connected input be a high level, or with the shell fragment Pin of Pb interface and the Pr interface I/O pin being connected input be two high level, then television master control device can according to the switching in the amount field dividing control signal source of the high level of input, it is switched to CVBS signal source after the high level only receiving the input of Y interface, it is switched to component signal source after two high level receiving Y interface and the input of Pb interface, or it is switched to component signal source after two high level receiving Y interface and the input of Pr interface, or, receive Y interface, it is switched to component signal source after three high level of Pb interface and the input of Pr interface.
Thus, switch the circuit realiration corresponding signal source of access automatic switchover according to user, switch without user's manual operation, user is without understanding the corresponding relation between holding wire and signal source, solve the confusing technical problem of appearance of existence when carrying out manual switching for multiplex interface in prior art, improve the experience effect of user.
After reading in conjunction with the accompanying the detailed description of the application embodiment, other features of the application and advantage will become clearer from.
Accompanying drawing explanation
Fig. 1 is the circuit diagram of automatic switch-over circuit of the TV AV interface that proposes of the embodiment of the present application and component interface;
Fig. 2 is the circuit diagram of automatic switch-over circuit of the TV AV interface that proposes of the embodiment of the present application and component interface;
Fig. 3 is the circuit diagram of automatic switch-over circuit of the TV AV interface that proposes of the embodiment of the present application and component interface.
Detailed description of the invention
Below in conjunction with accompanying drawing, the detailed description of the invention of the application is described in more detail.
As shown in Figure 1, Figure 2 and Figure 3, the TV AV interface proposed for the embodiment of the present application and the automatic switch-over circuit of component interface, including component interface and television master control device U1; Component interface includes Y interface, Pb interface and Pr interface; AV interface and Y interface duplex; Y interface adopts the three Pin Interface Terminals of the shell fragment Pin2 and ground connection Pin3 that include signal input Pin1 and signal input Pin1 clamping.
Pb interface or Pr interface adopt the three Pin Interface Terminals of the shell fragment Pin2 and ground connection Pin3 that include signal input Pin1 and signal input Pin1 clamping; Or, Pb and Pr interface all adopts the three Pin Interface Terminals of the shell fragment Pin2 and ground connection Pin3 that include signal input Pin1 and signal input Pin1 clamping.
As it is shown in figure 1, the signal input Pin1 of Y interface is connected on the shell fragment Pin2 of pull down resistor R1, Y interface and is connected to pull-up resistor R2; And the shell fragment Pin2 of Y interface is also connected with an I/O pin of television master control device U1. The signal input Pin1 of Pb interface is connected on the shell fragment Pin2 of pull down resistor R3, Pb interface and is connected to pull-up resistor R4; And the shell fragment Pin2 of Pb interface is also connected with an I/O pin of television master control device U1.
Or, as in figure 2 it is shown, the signal input Pin1 of Y interface is connected on the shell fragment Pin2 of pull down resistor R1, Y interface and is connected to pull-up resistor R2; And the shell fragment Pin2 of Y interface is also connected with an I/O pin of television master control device U1. The signal input Pin1 of Pr interface is connected on the shell fragment Pin2 of pull down resistor R5, Pr interface and is connected to pull-up resistor R6;And the shell fragment Pin2 of Pr interface is also connected with an I/O pin of television master control device U1.
Or, as it is shown on figure 3, the signal input Pin1 of Y interface is connected on the shell fragment Pin2 of pull down resistor R1, Y interface and is connected to pull-up resistor R2; And the shell fragment Pin2 of Y interface is also connected with an I/O pin of television master control device U1. The signal input Pin1 of Pb interface is connected on the shell fragment Pin2 of pull down resistor R3, Pb interface and is connected to pull-up resistor R4; And the shell fragment Pin2 of Pb interface is also connected with an I/O pin of television master control device U1. The signal input Pin1 of Pr interface is connected on the shell fragment Pin2 of pull down resistor R5, Pr interface and is connected to pull-up resistor R6; And the shell fragment Pin2 of Pr interface is also connected with an I/O pin of television master control device U1.
Above-mentioned, when circuit parameter configures, needing pull-up resistance is high resistance measurement, and configuration pull down resistor is low resistance resistance. And, in Y interface and Pb interface and/or Pr interface, with the shell fragment Pin that signal inputs Pin clamping, when there being signal terminal to insert, signal terminal extrusion elastic Pin, inputs Pin by shell fragment Pin with signal and separates, so that television master control device U1 receives high level, therefore, television master control device U1 can according to the switching of Y interface and the amount field dividing control signal source of the high level of Pb interface and/or the input of Pr interface.
Concrete, in TV AV interface that the embodiment of the present application provides and the automatic switch-over circuit of component interface and TV, the video signal input interface of multiplexing, namely Y interface, adopt the three Pin Interface Terminals with shell fragment design, increase pull-up resistor on shell fragment Pin, and color component input interface terminal, namely in one or two in Pb interface and Pr interface, it is also adopted by the three Pin Interface Terminals with shell fragment design, shell fragment Pin connects pull-up resistor. when interface not having signal terminal insert, shell fragment is clamped together with signal input Pin, then with the shell fragment Pin pull-up resistor being connected and with signal input Pin is connected pull down resistor formation bleeder circuit, when configuring bleeder circuit and making pull down resistor dividing potential drop only small, then to input to the voltage of television master control device also only small at shell fragment Pin place, and television master control device is low level according to what receive, after user operation accesses AV holding wire, Y interface has terminal to insert, then the signal terminal that the shell fragment Pin of Y interface and signal input Pin is inserted into separates so that what input with the shell fragment Pin of the Y interface I/O pin being connected in television master control device is a high level, after user operation accesses component signal line, except Y interface, Pb interface or Pr interface, or Pb interface and Pr interface are simultaneously, signal input Pin separated with shell fragment Pin, make in television master control device with the shell fragment Pin of the Pb interface I/O pin being connected input be a high level, or with the shell fragment Pin of the Pr interface I/O pin being connected input be a high level, or with the shell fragment Pin of Pb interface and the Pr interface I/O pin being connected input be two high level, then television master control device can according to the switching in the amount field dividing control signal source of the high level of input, it is switched to CVBS signal source after the high level only receiving the input of Y interface, it is switched to component signal source after two high level receiving Y interface and the input of Pb interface, or it is switched to component signal source after two high level receiving Y interface and the input of Pr interface, or, receive Y interface, it is switched to component signal source after three high level of Pb interface and the input of Pr interface.
Concrete, as it is shown in figure 1, when each interface does not have signal terminal to insert, the shell fragment in each interface is clamped together with signal input Pin1, then, for Y interface, the pull-up resistor R2 being connected with shell fragment Pin2 inputs the Pin1 pull down resistor R1 being connected and forms bleeder circuit with signal, and R2 is high resistance measurement, R1 is the low resistance resistance of tens ohm, then the dividing potential drop on pull down resistor R1 is only small, near zero so that it is low level that shell fragment Pin2 inputs the voltage Y_DET of television master control device U1. Pb interface is identical with the situation of Y interface, and it will not go into details. If user inserts video signal terminals, then after Y interface has video terminal to insert, shell fragment is backed down from the state inputting Pin1 clamping with signal and separates by terminal so that it is high level that shell fragment Pin2 inputs the voltage Y_DET of television master control device U1; When user inserts component signal terminal, then Y interface and Pb interface have terminal to insert, with Y interface have terminal insert situation just as, the insertion of terminal makes the shell fragment Pin2 of the Y interface voltage Pb_DET inputting television master control device U1 be high level so that it is also high level that the shell fragment Pin of Pb interface inputs the voltage of television master control device U1. Visible, television master control device U1 can distinguish, according to the quantity of the high level received, the difference accessing terminal, when only having Y interface and having terminal to insert, that receive is a high level Y_DET, can switching the signal source of TV to CVBS signal source according to this high level, when Y interface and Pb interface have terminal to insert, that receive is two high level Y_DET and Pb_DET, the signal source value YPbPr signal source of TV namely component signal source can be switched according to two high level.
As in figure 2 it is shown, with Fig. 1 in like manner, if user inserts video signal terminals, then the shell fragment Pin2 of Y interface inputs the voltage of television master control device U1 is high level; When user inserts component signal terminal, then Y interface and Pr interface have terminal to insert, it is high level that the shell fragment Pin2 making Y interface inputs the voltage of television master control device U1 so that it is also high level that the shell fragment Pin of Pr interface inputs the voltage Pr_DET of television master control device U1. In like manner, television master control device U1 can distinguish, according to the quantity of the high level received, the difference accessing terminal, when only having Y interface and having terminal to insert, that receive is a high level Y_DET, can switching the signal source of TV to CVBS signal source according to this high level, when Y interface and Pr interface have terminal to insert, that receive is two high level Y_DET and Pr_DET, the signal source value YPbPr signal source of TV namely component signal source can be switched according to two high level.
Such as Fig. 3 so, in like manner, if user inserts video signal terminals, then Y interface shell fragment Pin2 input television master control device U1 voltage be high level; When user inserts component signal terminal, then Y interface, Pb interface and Pr interface have terminal to insert, it is high level that the shell fragment Pin making Y interface inputs the voltage of television master control device U1, it is high level that the shell fragment Pin2 making Pb interface inputs the voltage Y_DET of television master control device U1 so that it is also high level that the shell fragment Pin of Pr interface inputs the voltage of television master control device U1. Then, television master control device U1 can distinguish, according to the quantity of the high level received, the difference accessing terminal, when only having Y interface and having terminal to insert, that receive is a high level Y_DET, can according to the signal source of this high level switching TV to CVBS signal source, when Y interface, Pb interface and Pr interface have terminal to insert, that receive is three high level Y_DET, Pb_DET and Pr_DET, the signal source value YPbPr signal source of TV namely component signal source can be switched according to three high level.
Thus, switch the circuit realiration corresponding signal source of access automatic switchover according to user, switch without user's manual operation, user is without understanding the corresponding relation between holding wire and signal source, solve the confusing technical problem of appearance of existence when carrying out manual switching for multiplex interface in prior art, improve the experience effect of user.
On being embodied as, and the shell fragment Pin2 of Y interface is connected to filter capacitor over the ground, and the shell fragment Pin2 of Pb interface and/or Pr interface is connected to filter capacitor over the ground; C1, C2 in Fig. 1, C1, the C3 in Fig. 2, the C1 in Fig. 3, C2 and C3.
With the shell fragment Pin2 of Y interface is connected to Zener diode over the ground; With the shell fragment Pin2 of Pb interface and/or Pr interface is connected to Zener diode over the ground, the preferred TVS diode of Zener diode; VD1, VD2 in Fig. 1, VD1, the VD3 in Fig. 2, the VD1 in Fig. 3, VD2 and VD3.
Based on the automatic switch-over circuit of above-mentioned TV AV interface and component interface, the embodiment of the present application also proposes a kind of TV, and this TV includes the automatic switch-over circuit of above-mentioned TV AV interface and component interface; Use the user of this TV, after inserting video signal terminals, TV automatically switches to CVBS signal source, after inserting component inputs, TV automatically switches to YPbPr signal source, it is not necessary to user is after inserting terminal, manual operation remote controller or button switch the signal source of correspondence, and then user is no need for distinguishing the corresponding relation between memory signal terminal and signal source, improves the experience of user, also improve the quality of tv product.
It should be noted that; described above is not to restriction of the present utility model; this utility model is also not limited to the example above; the change made in essential scope of the present utility model of those skilled in the art, remodeling, interpolation or replacement, also should belong to protection domain of the present utility model.
Claims (6)
1. an automatic switch-over circuit for TV AV interface and component interface, including component interface and television master control device; Described component interface includes Y interface, Pb interface and Pr interface; AV interface and described Y interface duplex; Described Y interface, Pb interface and Pr interface all include signal input Pin and ground connection Pin; It is characterized in that,
Described Y interface also includes inputting the pin shell fragment Pin clamped with signal; And the shell fragment Pin of described Y interface connects an I/O pin of described television master control device;
Described Pb interface and/or Pr interface also include inputting the pin shell fragment Pin clamped with signal; And the shell fragment Pin of described Pb interface and/or described Pr interface connects an I/O pin of described television master control device respectively;
Described television master control device is for the switching according to described Y interface and the amount field dividing control signal source of the high level of described Pb interface and/or the input of Pr interface.
2. the automatic switch-over circuit of TV AV interface according to claim 1 and component interface, it is characterised in that
The signal input Pin of described Y interface is connected to pull down resistor, and the shell fragment Pin of described Y interface is connected to pull-up resistor;
The signal input Pin of described Pb interface and/or described Pr interface is connected to pull down resistor, and the shell fragment Pin of described Pb interface and/or described Pr interface is connected to pull-up resistor;
Wherein, pull-up resistance is high resistance measurement, and configuration pull down resistor is low resistance resistance.
3. the automatic switch-over circuit of TV AV interface according to claim 1 and component interface, it is characterised in that be connected to filter capacitor over the ground with on the shell fragment Pin of described Y interface;
Filter capacitor it is connected to over the ground with on the shell fragment Pin of described Pb interface and/or described Pr interface.
4. the automatic switch-over circuit of TV AV interface according to claim 1 and component interface, it is characterised in that be connected to Zener diode over the ground with on the shell fragment Pin of described Y interface;
Zener diode it is connected to over the ground with on the shell fragment Pin of described Pb interface and/or described Pr interface.
5. the automatic switch-over circuit of TV AV interface according to claim 4 and component interface, it is characterised in that described Zener diode is TVS diode.
6. a TV, it is characterised in that include the automatic switch-over circuit of the TV AV interface as described in any one of claim 1-5 and component interface.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521111661.8U CN205304961U (en) | 2015-12-29 | 2015-12-29 | Automatic switch -over circuit and TV of TV AV interface and weight interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521111661.8U CN205304961U (en) | 2015-12-29 | 2015-12-29 | Automatic switch -over circuit and TV of TV AV interface and weight interface |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205304961U true CN205304961U (en) | 2016-06-08 |
Family
ID=56473801
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201521111661.8U Active CN205304961U (en) | 2015-12-29 | 2015-12-29 | Automatic switch -over circuit and TV of TV AV interface and weight interface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205304961U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106572317A (en) * | 2016-11-07 | 2017-04-19 | 广州视源电子科技股份有限公司 | Signal identification circuit and signal identification method |
-
2015
- 2015-12-29 CN CN201521111661.8U patent/CN205304961U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106572317A (en) * | 2016-11-07 | 2017-04-19 | 广州视源电子科技股份有限公司 | Signal identification circuit and signal identification method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN204305255U (en) | Can realize from the input of device A V signal and the Set Top Box switched | |
| CN108352664A (en) | USB Type-C plugs and cable | |
| CN205304961U (en) | Automatic switch -over circuit and TV of TV AV interface and weight interface | |
| CN105491431B (en) | Control system for LED television complete machine | |
| CN216848513U (en) | Cooking utensil's communication circuit and cooking utensil | |
| CN208445692U (en) | Controllable type intelligent home network TV set-top box | |
| CN104780414B (en) | The multimedia terminal of energy two operating systems of seamless switching and switching method | |
| CN103686285A (en) | Touch terminal and method for switching between Android system and Windows system | |
| CN202121700U (en) | Automatic signal source detection circuit for television set | |
| CN203416371U (en) | Set-top box | |
| CN207995291U (en) | Set-top box and its interface multiplexing circuit | |
| CN101977287A (en) | Method for prompting signal state of television signal source menu | |
| CN205961078U (en) | Power hot plug protection circuit and components of a whole that can function independently TV | |
| WO2017101308A1 (en) | Television signal source automatic switching equipment | |
| CN202425018U (en) | Earphone terminal interface circuit and set top box with the same | |
| CN103957439B (en) | A kind of high-definition multimedia controller and its mainboard assembly | |
| CN202931492U (en) | Signal modulation apparatus for modulating 3D signal to power supply terminal | |
| CN206993271U (en) | A kind of audio frequency and video switched router with distant control function | |
| CN210351382U (en) | HDMI switcher | |
| CN203705939U (en) | Dual-system intelligent household host | |
| CN2859934Y (en) | Touch induction key-press circuit for TV set | |
| CN203340235U (en) | A TV box compatible with a set top box | |
| CN106888396B (en) | Separated television control circuit and method and separated television | |
| CN103686012A (en) | Television signal terminal multiplex device and control method thereof | |
| CN103281584A (en) | Television setting menu optimization method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee | ||
| CP01 | Change in the name or title of a patent holder |
Address after: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Industrial Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |