CN1845580A - Audio and video signal source recognition and automatic switching method and apparatus - Google Patents
Audio and video signal source recognition and automatic switching method and apparatus Download PDFInfo
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- CN1845580A CN1845580A CNA2005100339399A CN200510033939A CN1845580A CN 1845580 A CN1845580 A CN 1845580A CN A2005100339399 A CNA2005100339399 A CN A2005100339399A CN 200510033939 A CN200510033939 A CN 200510033939A CN 1845580 A CN1845580 A CN 1845580A
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Abstract
The device to auto recognize and switch audio and video signal source comprises a advanced video transfer switch for one or more high-level signal connected to the video switch for common signal. Wherein, the video switch selects data with special PRI to the video processor while the corresponding audio input signal shares a group of input ports; the CPU real-time scans lots of signal port to recognize which input port carries video input signal for switch. This invention is simple and can satisfy development request.
Description
Technical field
The present invention relates to a kind of audio-video signal source identification and the device that automaticallyes switch, it comprises video switch and audio switch.The invention still further relates to a kind of audio-video signal source identification and the method that automaticallyes switch.
Background technology
Patent application 90102077.X discloses a kind of switch that is used for audio/video, as shown in Figure 1, this switch includes video switch arrangement, audio switch device and control device, its video switch arrangement has three signal video frequency inputs and signal input end, the audio switch device has two audio signal input ends and signal input end, and this switch can be according to control signal C
0And C
1Carry out the conversion of three kinds of working methods, and when the third working method, the audio signal of its audio signal and second kind of working method is shared input, sees accompanying drawing 2 for details.
The shortcoming of this switch is:
(1) although allow the input of four road videos, have only the input of three road audio frequency, in fact the user has only three kinds of input signal sources to select;
(2) have only one road advanced video input, can't satisfy user's demand at present;
(3) user needs repeatedly button just can obtain needed signal, complex operation.
Patent application 02101664.X discloses the control method of a kind of automatic detection audio-video signal and corresponding output, automatic detection audio-video signal can dynamically be made, and provide output, its deficiency is only under the television set holding state, promptly when static state, realize that the audio frequency, the vision signal that externally are pressed into detect automatically and the control method of corresponding output.
Summary of the invention
The purpose of this invention is to provide a kind of audio-video signal source identification and the device that automaticallyes switch, this apparatus structure is simple, can realize identification and control to multipath signal source fast.
The purpose of this invention is to provide a kind of audio-video signal source identification and the method that automaticallyes switch, this method control supervision, the identification and the selection of advanced video signal in real time can be satisfied the enough demands of user with easy control automatically.
Another purpose of this aspect provides a kind of audio-video signal source identification and the method and the device that automatically switch, and this method and device are realized simple, easy to operate, and have reduced production cost.
The present invention is a kind of audio-video signal source identification and the device that automaticallyes switch, it is characterized in that it comprises a video switch, video switch connects a video processor, an audio switch, it connects an audio process, it also comprises an advanced video diverter switch, this advanced video diverter switch is connected to video switch, there is ordinary video signal (two-way is arranged usually) to link video switch, there is more than one advanced video signal to insert the advanced video diverter switch, video switch selects the certain priority data to pass to video processor, handle by video processor, and corresponding output, its corresponding audio input signal is then shared one group of audio signal input end mouth; Video switch, audio switch and advanced video diverter switch all are connected in CPU, by CPU signal are controlled.
Above-mentioned a plurality of advanced video signal input parts are connected in parallel.
Above-mentioned audio-video signal source identification and the device that automaticallyes switch, wherein the advanced video diverter switch is made up of detection and logic shaping, control signal switching and video switch switch.
The present invention also provides a kind of audio-video signal source identification and the method that automaticallyes switch, can there be a plurality of video-audio signals to be sent to video switch, audio switch respectively simultaneously, it is characterized in that the input of advanced video diverter switch control advanced video signal, and signal is input to video switch, CPU carries out real time scan to described a plurality of advanced signal ports, there are video input signals and control of video switch to automatically switch to discern which input port, send the video input signals of this input port to display.
Described audio-video signal source identification and the method that automaticallyes switch, when the input port more than two or two had video input signals simultaneously, device is other height according to priority, the vision signal of the input input that at first display priority is high.
Described audio-video signal source identification and the method that automaticallyes switch, the input port of described vision signal can be set up a default priority, and the user can reset the priority level of input port according to the wish of oneself.
When above-mentioned input port has vision signal more than two or two, can select the low signal of priority level to send display to.
Above-mentioned audio-video signal source identification and the method that automaticallyes switch is characterized in that the specific implementation step of this method is:
1, priority level is set, the input interface of vision signal is provided with priority level, the ordinary video signal is set to priority level one, and the advanced video signal is set to priority level two, three ..., and priority level is stored in the E that is connected in CPU
2Among the PROM;
2, to the vision signal (input of video switch) of input, CPU scans, according to its input port data, from E
2The PROM reading of data compares, and confirms its priority level;
3, according to the sequence of priority level, CPU control is input to video processor, and is input to display;
4, corresponding audio signal, CPU control audio switch outputs to audio process, and handles output.
Audio-video signal source identification provided by the invention and the method and the device that automatically switch, simple in structure, easy to operate, the method of a plurality of senior audio-video signal inputs is provided to the user, it has creatively used CPU interrupt requests and response technology to handle the Dynamic Recognition and the selection of a plurality of advanced video signal inputs, simplify the setting of input port, and simplified design of software corresponding.
And the present invention does in parallel the processing with a plurality of advanced video signal input parts, has reduced the quantity of television set external input port, thereby has reached the purpose that reduces cost.
Description of drawings
Below in conjunction with accompanying drawing a kind of audio-video signal source identification of the present invention is described in further detail with the method and the device that automatically switch.
Fig. 1 is according to control signal C in the prior art
0And C
1Carry out the circuit diagram of the conversion of three kinds of working methods,
Fig. 2 is in the prior art, and when the third working method, the audio signal of its audio signal and second kind of working method is shared the schematic diagram of input,
Fig. 3 is a structural representation of the present invention,
Fig. 4 is the circuit diagram of advanced video diverter switch of the present invention,
The logical relation diagram that Fig. 5 selects for advanced video diverter switch signal of the present invention.
Embodiment
As shown in Figure 3, at a plurality of video input signals TV
In1, TV
In2And TV
In3Between selection by the user by advanced video diverter switch control, adopt the mode of interrupt requests and response between advanced video diverter switch and the CPU, the priority level of each input port is carried out the order of priority of regulation as acquiescence, and order of priority allows user's modification.
The priority of acquiescence is followed successively by TV
In4, TV
In5And TV
In6
The advanced video diverter switch is by detection and logic shaping, control signal switch and the video switch switch is formed, as shown in Figure 4.TV
In4～6Vision signal is connected respectively to three external interrupt mouth INT4～6 of CPU via detection and logic shaping and control signal handoff functionality piece.Wherein the interrupt request rank of INT4 is the highest, and INT5 takes second place, and INT6 is minimum.The user can change TV by control signal handoff functionality piece
In1, TV
In2, TV
In3With the connected mode of INT4～6, thereby reach the purpose that changes priority.The connected mode of its acquiescence is:
| TV in1 | INT4 |
| TV in5 | INT5 |
| TV in6 | INT6 |
When high level appearred in fracture in INT4～6, CPU can start corresponding interrupt service routine, passes through I
2C output control selects signal to the video switch switch, the output of gating corresponding video signals.The logical relation of advanced video diverter switch acquiescence can be expressed as:
TVin3＝TVin4+ TVin4·TVin5+ TVin4·TVin5·TVin6
For example, TV
In6On S-VCD, TV are arranged
In5On DVD, TV are arranged
In4On three signal input sources of RGB are arranged, can know that by the logical relation of above-mentioned acquiescence wherein S-VCD priority is minimum, DVD secondly, and RGB priority is the highest, sees accompanying drawing 5 for details.When the S-VCD input has vision signal, via detection and logic shaping and interrupt request singal IRQ of control signal handoff functionality piece generation
S-VCDTo the INT6 of CPU, CPU starts interrupt service routine S
S-VCD, the vision signal of S-VCD is sent to output.
And work as the DVD input vision signal input is arranged, it produces equally and asks IRQ in one absolutely
DVDTo the INT5 of CPU, IRQ is determined in the comparison of the advanced row major level of CPU
DVDPriority be higher than IRQ
S-VCDSo, the interrupt service routine S of interruption S-VCD
S-VCD, and the interrupt response service routine S of startup DVD
DVD, with the vision signal of DVD as output signal and output.
Equally, if this moment, the RGB end had input signal, because the priority of fracture is the highest among the corresponding INT4 of RGB, its vision signal will output to output, see accompanying drawing 3,4 and 5 for details.
The control of audio signal switch part is relatively simple, has three inputs, is respectively AV
1, AV
2And AV
3, the selection between them is controlled by the user, corresponding TV
In4, TV
In5And TV
In6Audio signal AV
4, AV
5And AV
6A shared input, shared mode are simple in parallel, so need not special control.
For example, we have S-VCD, DVD and three signal input sources of RGB, and wherein S-VCD priority is minimum, DVD secondly, and RGB priority is the highest, sees accompanying drawing 4 for details.When diverter switch detects the S-VCD input vision signal is arranged, produce an interrupt request singal IRQ
S-VCDTo CPU, CPU starts interrupt service routine S
S-VCD, the vision signal of S-VCD is sent to output.
And this moment, diverter switch detects the DVD input again the vision signal input, and it produces equally and asks IRQ in one absolutely
DVDTo CPU, IRQ is determined in the comparison of the advanced row major level of CPU
DVDPriority be higher than IRQ
S-VCDSo, the interrupt service routine S of interruption S-VCD
S-VCD, and the interrupt response service routine S of startup DVD
DVD, the vision signal of DVD is sent to output as output signal.
Equally,,, its vision signal is outputed to output, see accompanying drawing 3 and 4 for details because the priority of RGB is the highest if this moment, the RGB end had input signal.
The control of audio signal switch part is relatively simple, has three inputs, is respectively AV
1, AV
2And AV
3, the selection between them is controlled by the user, corresponding TV
In4, TV
In5And TV
In6Audio signal AV
4, AV
5And AV
6A shared input, shared mode are simple in parallel, so need not special control.
Claims (8)
1, a kind of audio-video signal source identification and the device that automaticallyes switch, it is characterized in that it comprises a video switch, video switch connects a video processor, an audio switch, it connects an audio process, it also comprises an advanced video diverter switch, this advanced video diverter switch is connected to video switch, the ordinary video signal is linked video switch, more than one advanced video signal inserts the advanced video diverter switch, and video switch selects the certain priority data to pass to video processor, is handled by video processor, and corresponding output, its corresponding audio input signal is then shared one group of audio signal input end mouth; Video switch, audio switch and advanced video diverter switch all are connected in CPU, by CPU signal are controlled.
2, audio-video signal source identification as claimed in claim 1 and the device that automaticallyes switch is characterized in that above-mentioned a plurality of advanced video signal input parts are connected in parallel.
3, audio-video signal source identification as claimed in claim 1 and the device that automaticallyes switch, it is characterized in that above-mentioned audio-video signal source identification and the device that automaticallyes switch, wherein the advanced video diverter switch is made up of detection and logic shaping, control signal switching and video switch switch.
4, a kind of audio-video signal source identification and the method that automaticallyes switch, can there be a plurality of video-audio signals to be sent to video switch, audio switch respectively simultaneously, it is characterized in that the input of advanced video diverter switch control advanced video signal, and signal is input to video switch, CPU carries out real time scan to described a plurality of advanced signal ports, there are video input signals and control of video switch to automatically switch to discern which input port, send the video input signals of this input port to display.
5, a kind of audio-video signal source identification and the method that automaticallyes switch, when it is characterized in that having input port more than two or two simultaneously video input signals to be arranged, press the height of the priority level of video signal input terminal mouth setting, the vision signal of the input input that at first display priority is high.
6, audio-video signal source identification as claimed in claim 5 and the method that automaticallyes switch, the input port that it is characterized in that described vision signal can be provided with a default priority, and the user also can reset the priority level of input port according to the demand of oneself.
7, audio-video signal source as claimed in claim 6 identification and the method that automaticallyes switch when it is characterized in that above-mentioned input port has vision signal more than two or two, can select the low signal of priority level to send display to.
8, above-mentioned audio-video signal source is discerned and the method that automaticallyes switch, and it is characterized in that the specific implementation step of this method is:
A, priority level is set, the input interface of vision signal is provided with priority level, the ordinary video signal is set to priority level one, and the advanced video signal is set to priority level two, three ..., and priority level is stored in the E that is connected in CPU
2Among the PROM;
B, the vision signal (input of video switch) to importing, CPU scans, according to its input port data, from E
2The PROM reading of data compares, and confirms its priority level;
C, according to the sequence of priority level, CPU control is input to video processor, and is input to display;
D, corresponding audio signal, CPU control audio switch outputs to audio process, and handles output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100339399A CN1845580A (en) | 2005-04-07 | 2005-04-07 | Audio and video signal source recognition and automatic switching method and apparatus |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2005100339399A CN1845580A (en) | 2005-04-07 | 2005-04-07 | Audio and video signal source recognition and automatic switching method and apparatus |
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| Publication Number | Publication Date |
|---|---|
| CN1845580A true CN1845580A (en) | 2006-10-11 |
Family
ID=37064490
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2005100339399A Pending CN1845580A (en) | 2005-04-07 | 2005-04-07 | Audio and video signal source recognition and automatic switching method and apparatus |
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|---|---|
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8026981B2 (en) | 2006-01-03 | 2011-09-27 | Mstar Semiconductor, Inc. | Method of intelligently selecting a signal source and associated apparatus |
| CN103327433A (en) * | 2013-05-27 | 2013-09-25 | 腾讯科技（深圳）有限公司 | Audio input interface detection method and system thereof |
| CN105828013A (en) * | 2016-03-24 | 2016-08-03 | 海信电子科技（深圳）有限公司 | Display device signal source selection method and device |
| CN106339200A (en) * | 2016-08-29 | 2017-01-18 | 联想(北京)有限公司 | Electronic equipment and control method and control device thereof |
| CN106713978A (en) * | 2017-01-04 | 2017-05-24 | 青岛海信电器股份有限公司 | Method and device for selecting audio output channel and terminal equipment |
| CN113068068A (en) * | 2021-03-25 | 2021-07-02 | 深圳Tcl数字技术有限公司 | Universal remote controller control method and device, television, remote controller and medium |
| CN115550598A (en) * | 2022-09-14 | 2022-12-30 | 北京融讯科创技术有限公司 | Video conference configuration method and device, terminal equipment and storage medium |
-
2005
- 2005-04-07 CN CNA2005100339399A patent/CN1845580A/en active Pending
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8026981B2 (en) | 2006-01-03 | 2011-09-27 | Mstar Semiconductor, Inc. | Method of intelligently selecting a signal source and associated apparatus |
| US8054384B2 (en) | 2006-01-03 | 2011-11-08 | Mstar Semiconductor, Inc. | Method of auto-configuring audio-video signals and associated apparatus |
| CN103327433A (en) * | 2013-05-27 | 2013-09-25 | 腾讯科技（深圳）有限公司 | Audio input interface detection method and system thereof |
| CN103327433B (en) * | 2013-05-27 | 2014-08-27 | 腾讯科技（深圳）有限公司 | Audio input interface detection method and system thereof |
| CN105828013A (en) * | 2016-03-24 | 2016-08-03 | 海信电子科技（深圳）有限公司 | Display device signal source selection method and device |
| CN106339200A (en) * | 2016-08-29 | 2017-01-18 | 联想(北京)有限公司 | Electronic equipment and control method and control device thereof |
| CN106713978A (en) * | 2017-01-04 | 2017-05-24 | 青岛海信电器股份有限公司 | Method and device for selecting audio output channel and terminal equipment |
| CN113068068A (en) * | 2021-03-25 | 2021-07-02 | 深圳Tcl数字技术有限公司 | Universal remote controller control method and device, television, remote controller and medium |
| CN115550598A (en) * | 2022-09-14 | 2022-12-30 | 北京融讯科创技术有限公司 | Video conference configuration method and device, terminal equipment and storage medium |
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