CN203104675U - Video outputting device - Google Patents
Video outputting device Download PDFInfo
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- CN203104675U CN203104675U CN 201320005156 CN201320005156U CN203104675U CN 203104675 U CN203104675 U CN 203104675U CN 201320005156 CN201320005156 CN 201320005156 CN 201320005156 U CN201320005156 U CN 201320005156U CN 203104675 U CN203104675 U CN 203104675U
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Abstract
Disclosed in the utility model is a video outputting device that is provided with a signal output device and an output controller. A first output terminal of the signal output device and an input terminal of a first filter are connected so as to output a CVBS composite video signal to the first filter; a second output terminal is connected with an input terminal of a second filter to output a Y brightness signal to the second filter; and a third output terminal and a third input terminal of the output controller are connected to output a high or low level. And a first input terminal of the output controller and an output terminal of the first filter are connected to receive the filtered CVBS composite video signal; a second input terminal is connected with an output terminal of the second filter to receive the filtered Y brightness signal; and an output terminal is connected with a video output terminal. When a third input terminal receives a high level, the output terminal outputs the CVBS composite video signal; and when the third input terminal receives the low level, the output terminal outputs the Y brightness signal. With utilization of the video outputting device, the number of terminals is reduced; and the production cost is lowered.
Description
Technical field
The utility model relates to the player technical field, relates in particular to a kind of video output device.
Background technology
Along with improving constantly of people's living standard, present consumer electronics product more and more develops to the microminiaturized direction of miniaturization.Present picture output device generally all has CVBS composite video output port and YPbPr color difference components output port, wherein, CVBS composite video output port is used for sending the CVBS composite video signal, and YPbPr color difference components output port is used for sending the Y luminance signal.
Fig. 1 is the structural representation of prior art video output device.Referring to Fig. 1, this device comprises: signal output device 101, first filter 102 and second filter 103.Wherein, first output of described signal output device 101 links to each other with the input of first filter 102 to export the CVBS composite video signals to first filter 102, and the input of second output and second filter 103 links to each other to export the Y luminance signals to second filter 103; The output of first filter 102 links to each other with CVBS composite video lead-out terminal with output CVBS composite video signal; The output of second filter 103 links to each other with YPbPr color difference components lead-out terminal with output Y luminance signal.
In the prior art, first output output CVBS composite video signal by signal output device 101, the CVBS composite video signal is carried out filtering by first filter 102, and filtered CVBS composite video signal is exported by CVBS composite video lead-out terminal; In like manner, by second output output Y luminance signal of signal output device 101, the Y luminance signal is carried out filtering by second filter 103, and filtered Y luminance signal is exported by YPbPr color difference components lead-out terminal.In actual applications, separate between CVBS composite video signal and the Y luminance signal, if the user need choose the CVBS composite video signal and play, then, CVBS composite video lead-out terminal and television set corresponding C VBS composite video be connected by being received terminal, and the corresponding YPbPr color difference components of YPbPr color difference components lead-out terminal and television set is received the disconnection that is connected of terminal, like this, can make in the two paths of signals that signal output device 101 exports simultaneously, have only the required CVBS composite video signal of user to export television set to and play; Similar ground, if the user need choose the Y luminance signal and play, then by CVBS composite video lead-out terminal and television set corresponding C VBS composite video being received the disconnection that is connected of terminal, and the corresponding YPbPr color difference components of YPbPr color difference components lead-out terminal and television set is received terminal be connected, thereby ensure that television set receives the Y luminance signal and plays.
As seen above-mentioned, video output device has the following disadvantages in the prior art: CVBS composite video signal and Y luminance signal are exported with two lead-out terminals, and output interface is too much.
The utility model content
The video output device that embodiment of the present utility model provides reduces number of terminals.
For achieving the above object, a kind of video output device that the utility model embodiment provides comprises first filter, second filter, and this device also comprises: signal output device and o controller.Wherein, first output of described signal output device links to each other with the input of first filter to export the CVBS composite video signal to first filter, the input of second output and second filter links to each other to export the Y luminance signal to second filter, and the 3rd input of the 3rd output and o controller links to each other; The output of the first input end of described o controller and first filter links to each other to receive through first filter filtering CVBS composite video signal later, the output of second input and second filter links to each other to receive through the Y luminance signal behind second filter filtering, the corresponding high or low level of the 3rd output output of the 3rd input received signal follower, output links to each other with outside video output terminal, if the 3rd input of o controller receives high level, then the output of o controller is exported the CVBS composite video signal, if the 3rd input of o controller receives low level, then the output of o controller is exported the Y luminance signal.
Preferably, described first filter comprises: first resistance, first inductor, the 3rd capacitor and the 5th capacitor.Wherein, an end of first resistance and first output of signal output device link to each other other end ground connection; One end of first inductor and first output of signal output device link to each other, and the first input end of the other end and o controller links to each other; One end of the 3rd capacitor and first output of signal output device link to each other other end ground connection; One end of the 5th capacitor links to each other other end ground connection with an end of first inductor.
Preferably, described second filter comprises: second resistance, second inductor, the 4th capacitor, second capacitor and first capacitor.Wherein, an end of second resistance and second output of signal output device link to each other other end ground connection; One end of second inductor and second output of signal output device link to each other, and second input of the other end and o controller links to each other; One end of the 4th capacitor and second output of signal output device link to each other, and second input of the other end and o controller links to each other; One end of second capacitor links to each other other end ground connection with an end of second inductor; One end of first capacitor links to each other other end ground connection with an end of second inductor.
Preferably, described o controller comprises: the 5th resistance, first branch road, second branch road and the 8th resistance.Wherein, an end of the 5th resistance and the 3rd output of signal output device link to each other, and the other end links to each other with an end of first branch road, an end of second branch road and an end of the 8th resistance respectively; The other end of first branch road links to each other with outside video output terminal; The other end of second branch road links to each other with outside video output terminal; The other end ground connection of the 8th resistance.
Preferably, described first branch road comprises: the 3rd transistor, the 6th resistance, the first transistor and the 3rd resistance.Wherein, an end of the 3rd transistorized base stage and the 5th resistance links to each other, and an end of collector electrode and the 6th resistance links to each other grounded emitter; The other end of the 6th resistance links to each other with first power supply; One end of the base stage of the first transistor and the 6th resistance links to each other, and collector electrode links to each other with the output of first filter, and an end of emitter and the 3rd resistance links to each other; The other end of the 3rd resistance links to each other with outside video output terminal.
Preferably, described second branch road comprises: the 7th resistance, transistor seconds and the 4th resistance, and wherein, an end of the 7th resistance links to each other with an end of the 5th resistance, and the other end links to each other with second source; One end of the base stage of transistor seconds and the 7th resistance links to each other, and collector electrode links to each other with the output of second filter, and an end of emitter and the 4th resistance links to each other; The other end of the 4th resistance links to each other with outside video output terminal.
As seen from the above technical solution, the video output device that the utility model provides by increasing GPIO interface and o controller, is realized two lead-out terminals are merged into a lead-out terminal.Reduce number of terminals, reduced installation cost.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, below will do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art.Apparently, the accompanying drawing in below describing only is embodiment more of the present utility model, for those of ordinary skills, can also obtain other embodiment and accompanying drawing thereof according to these accompanying drawing illustrated embodiments.
Fig. 1 is the structural representation of prior art video output device;
Fig. 2 is the structural representation of the utility model video output device;
Fig. 3 is the circuit structure diagram of device shown in Figure 2.
Embodiment
Below with reference to accompanying drawing the technical scheme of each embodiment of the utility model is carried out clear, complete description, obviously, described embodiment only is a part of embodiment of the present utility model, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are resulting all other embodiment under the prerequisite of not making creative work, all belong to the scope that the utility model is protected.
The video output device that the utility model proposes, because though CVBS composite video signal and Y luminance signal are exported simultaneously by signal output device, but at one time, have only one road signal to be received and play by television set, and CVBS composite video lead-out terminal and YPbPr color difference components lead-out terminal can be compatible.Thereby, by increase o controller and GPIO interface, thereby realize CVBS composite video output port and YPbPr color difference components output port are merged into a port.
Shown in Figure 2 is the structural representation of the utility model video output device.Referring to Fig. 2, this device comprises: signal output device 201, first filter 202, second filter 203 and o controller 204.Wherein, first output of described signal output device 201 links to each other with the input of first filter 202 to export the CVBS composite video signals to first filter 202, the input of second output and second filter 203 links to each other to export the Y luminance signals to second filter 203, and the 3rd input of the 3rd output and o controller 204 links to each other to export corresponding high or low level to the 3rd input of o controller 204; The first input end of the output of first filter 202 and o controller 204 links to each other to export filtered CVBS composite video signal to o controller 204; Second input of the output of second filter 203 and o controller 204 links to each other to export filtered Y luminance signal to o controller 204; The output of described o controller 204 links to each other with outside video output terminal, if the 3rd input of o controller receives high level, then the output of o controller is exported corresponding C VBS composite video signal, if the 3rd input of o controller receives low level, then the output of o controller is exported corresponding Y luminance signal.
The course of work of the utility model video output device shown in Figure 2 is as follows:
Separate between CVBS composite video signal and the Y luminance signal.If need select the CVBS composite video signal for use, utilize remote controller to regulate this and install corresponding C VBS composite video signal pattern, and with the output of o controller 204 and the existing equipment interface of CVBS composite video output port, be that television set corresponding C VBS composite video reception terminal (outside video output terminal) links to each other, the output of the control signal control o controller 204 of signal output device 201 outputs is exported the CVBS composite video signal; If need select the Y luminance signal for use, utilize remote controller to regulate this and install corresponding Y luminance signal pattern, and with the output of o controller 204 and the existing equipment of YPbPr color difference components output port, be that the corresponding YPbPr color difference components reception of television set terminal (outside video output terminal) links to each other, the output of the control signal control o controller 204 of signal output device 201 outputs is exported the Y luminance signal.
The course of work of output CVBS composite video signal: after utilizing remote controller conditioning signal follower 201 to CVBS composite video signal patterns, signal output device 201 is exported the CVBS composite video signals by first output to first filter 202, export the Y luminance signals by second output to second filter 203, meanwhile, signal output device 201 is by the 3rd output, it is the GPIO interface, the 3rd input input high level to o controller 204, o controller 204 is according to the high level of signal output device 201 by the output of the 3rd output, control is through the output output of first filter, 202 filtered CVBS composite video signals by o controller 204, simultaneously, control disconnects through the output of second filter, 203 filtered Y luminance signals and o controller 204.
The course of work of output Y luminance signal: after utilizing remote controller conditioning signal follower 201 to Y luminance signal patterns, signal output device 201 is exported the CVBS composite video signals by first output to first filter 202, export the Y luminance signals by second output to second filter 203, meanwhile, signal output device 201 is by the 3rd output, it is the GPIO interface, the 3rd input input low level to o controller 204, o controller is according to the low level of passing through the output of the 3rd output of signal output device 201, control disconnects through the output of first filter, 202 filtered CVBS composite video signals and o controller 204, will be through the output output of second filter, 203 filtering Y luminance signal later by o controller 204.
As seen by above-mentioned, the utility model video output device lead-out terminal is few, and cost is low.
Below based on Fig. 2, the circuit structure of the utility model video output device is described.
Fig. 3 is the circuit structure diagram of device shown in Figure 2.Referring to Fig. 3, among the figure, represent that with the connection of band stain two circuit form physical connection, represent that with the connection of stain two circuit do not form physical connection, promptly two circuits do not form real tie point, comprise in the circuit structure diagram: first filter 301, second filter 302 and the o controller.Wherein, first output of the input of first filter 301 and signal output device 201 links to each other, and the first input end of output and o controller links to each other; Second output of the input of second filter 302 and signal output device 201 links to each other, and second input of output and o controller links to each other; The 3rd input of o controller links to each other with the 3rd output of signal output device 201, and output links to each other with outside video output terminal.
Described first filter 301 comprises: first resistance R 628, the first inductor L615, the 3rd capacitor C620 and the 5th capacitor C623.Wherein, an end of first resistance R 628 links to each other other end ground connection with first output of signal output device 201; The end of the first inductor L615 links to each other with first output of signal output device 201, and the first input end of the other end and o controller links to each other; The end of the 3rd capacitor C620 links to each other other end ground connection with first output of signal output device 201; The end of the 5th capacitor R623 links to each other other end ground connection with the end of the first inductor L615.
Described second filter 302 comprises: second resistance R 629, the second inductor L618, the 4th capacitor C622, the second capacitor C614 and the first capacitor C613.Wherein, an end of second resistance R 629 links to each other other end ground connection with second output of signal output device 201; The end of the second inductor L618 links to each other with second output of signal output device 201, and second input of the other end and o controller links to each other; The end of the 4th capacitor C622 links to each other with second output of signal output device 201, and the other end links to each other with the collector electrode of transistor seconds Q7; The end of the second capacitor C614 links to each other other end ground connection with the end of the 4th capacitor R622; The end of the first capacitor C613 links to each other other end ground connection with the end of the 4th capacitor R622.
Described o controller comprises: the 5th resistance R 634, the 8th resistance R 637, first branch road and second branch road.Wherein, an end of the 5th resistance R 634 and the 3rd output of signal output device link to each other, and the other end links to each other with an end of first branch road, an end of second branch road and an end of the 8th resistance R 637 respectively; The other end ground connection of the 8th resistance R 637; The other end of first branch road links to each other with outside video output terminal; The other end of second branch road links to each other with outside video output terminal.
Described first branch road comprises: the 3rd transistor Q8, the 6th resistance R 635, the first transistor Q6 and the 3rd resistance R 631.Wherein, the base stage of the 3rd transistor Q8 links to each other with an end of the 5th resistance R 634, and collector electrode links to each other grounded emitter with an end of the 6th resistance R 635; The other end of the 6th resistance R 635 links to each other with first power supply; The base stage of the first transistor Q6 links to each other with an end of the 6th resistance R 635, and collector electrode links to each other with the output of first filter 301, and emitter links to each other with an end of the 3rd resistance R 631; The other end of the 3rd resistance R 631 links to each other with outside video output terminal.
Described second branch road comprises: the 7th resistance R 636, transistor seconds Q7 and the 4th resistance R 632.Wherein, an end of the 7th resistance R 636 links to each other with an end of the 5th resistance R 634, and the other end links to each other with second source; The base stage of transistor seconds Q7 links to each other with an end of the 7th resistance R 636, and collector electrode links to each other with the output of second filter 302, and emitter links to each other with an end of the 4th resistance R 632; The other end of the 4th resistance R 632 links to each other with outside video output terminal.
The course of work of the circuit structure diagram of the utility model video output device shown in Figure 3 is as follows:
The course of work of video output terminal output CVBS video compositing signal: signal output device is exported the CVBS composite video signal by first output to first filter, signal output device is by the 3rd output, it is the GPIO interface, to o controller output high level, at this moment, the first transistor Q6 and the 3rd transistor Q8 conducting, transistor seconds Q7 ends, and video output terminal is by filtered CVBS composite video signal.
The course of work of video output terminal output Y luminance signal: signal output device is exported the Y luminance signal by second output to second filter, signal output device is by the 3rd output, it is the GPIO interface, to the o controller output low level, at this moment, the first transistor Q6 and the 3rd transistor Q8 end, transistor seconds Q7 conducting, and video output terminal is by filtered Y luminance signal.
Obviously, those skilled in the art can carry out various changes and modification to the utility model and not break away from spirit and scope of the present utility model.Like this, if of the present utility model these are revised and modification belongs within the scope of the utility model claim and equivalent technologies thereof, then the utility model also comprises these changes and modification interior.
Claims (6)
1. a video output device comprises first filter, second filter, it is characterized in that this device also comprises: signal output device and o controller, wherein,
First output of described signal output device links to each other with the input of first filter to export the CVBS composite video signal to first filter, the input of second output and second filter links to each other to export the Y luminance signal to second filter, and the 3rd input of the 3rd output and o controller links to each other;
The output of the first input end of described o controller and first filter links to each other to receive through first filter filtering CVBS composite video signal later, the output of second input and second filter links to each other to receive through the Y luminance signal behind second filter filtering, the corresponding high or low level of the 3rd output output of the 3rd input received signal follower, output links to each other with outside video output terminal, if the 3rd input of o controller receives high level, then the output of o controller is exported the CVBS composite video signal, if the 3rd input of o controller receives low level, then the output of o controller is exported the Y luminance signal.
2. device according to claim 1 is characterized in that, described first filter comprises: first resistance, first inductor, the 3rd capacitor and the 5th capacitor, wherein,
One end of first resistance and first output of signal output device link to each other other end ground connection;
One end of first inductor and first output of signal output device link to each other, and the first input end of the other end and o controller links to each other;
One end of the 3rd capacitor and first output of signal output device link to each other other end ground connection;
One end of the 5th capacitor links to each other other end ground connection with an end of first inductor.
3. device according to claim 1 is characterized in that, described second filter comprises: second resistance, second inductor, the 4th capacitor, second capacitor and first capacitor, wherein,
One end of second resistance and second output of signal output device link to each other other end ground connection;
One end of second inductor and second output of signal output device link to each other, and second input of the other end and o controller links to each other;
One end of the 4th capacitor and second output of signal output device link to each other, and second input of the other end and o controller links to each other;
One end of second capacitor links to each other other end ground connection with an end of second inductor;
One end of first capacitor links to each other other end ground connection with an end of second inductor.
4. device according to claim 1 is characterized in that, described o controller comprises: the 5th resistance, first branch road, second branch road and the 8th resistance, wherein,
One end of the 5th resistance and the 3rd output of signal output device link to each other, and the other end links to each other with an end of first branch road, an end of second branch road and an end of the 8th resistance respectively;
The other end of first branch road links to each other with outside video output terminal;
The other end of second branch road links to each other with outside video output terminal;
The other end ground connection of the 8th resistance.
5. device according to claim 4 is characterized in that, described first branch road comprises: the 3rd transistor, the 6th resistance, the first transistor and the 3rd resistance, wherein,
One end of the 3rd transistorized base stage and the 5th resistance links to each other, and an end of collector electrode and the 6th resistance links to each other grounded emitter;
The other end of the 6th resistance links to each other with first power supply;
One end of the base stage of the first transistor and the 6th resistance links to each other, and collector electrode links to each other with the output of first filter, and an end of emitter and the 3rd resistance links to each other;
The other end of the 3rd resistance links to each other with outside video output terminal.
6. device according to claim 4 is characterized in that, described second branch road comprises: the 7th resistance, transistor seconds and the 4th resistance, wherein,
One end of the 7th resistance links to each other with an end of the 5th resistance, and the other end links to each other with second source;
One end of the base stage of transistor seconds and the 7th resistance links to each other, and collector electrode links to each other with the output of second filter, and an end of emitter and the 4th resistance links to each other;
The other end of the 4th resistance links to each other with outside video output terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320005156 CN203104675U (en) | 2013-01-06 | 2013-01-06 | Video outputting device |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320005156 CN203104675U (en) | 2013-01-06 | 2013-01-06 | Video outputting device |
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| CN203104675U true CN203104675U (en) | 2013-07-31 |
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| CN 201320005156 Expired - Fee Related CN203104675U (en) | 2013-01-06 | 2013-01-06 | Video outputting device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025737A (en) * | 2016-05-09 | 2016-10-12 | 京东方科技集团股份有限公司 | Interface, electronic device and test method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106025737A (en) * | 2016-05-09 | 2016-10-12 | 京东方科技集团股份有限公司 | Interface, electronic device and test method |
| US10665979B2 (en) | 2016-05-09 | 2020-05-26 | Boe Technology Group Co., Ltd. | Interface, electronic device and test method |
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