CN101394491B - Output circuit - Google Patents
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- CN101394491B CN101394491B CN 200810224687 CN200810224687A CN101394491B CN 101394491 B CN101394491 B CN 101394491B CN 200810224687 CN200810224687 CN 200810224687 CN 200810224687 A CN200810224687 A CN 200810224687A CN 101394491 B CN101394491 B CN 101394491B
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Abstract
The invention provides an output circuit which comprises an output circuit board, a processing chip which is arranged on the output circuit board, and at least two output ports for generating signals which are generated by the processing chip; at least two output ports are corresponding to at least two output modes; the output ports of any two output modes in at least two output modes are different; the output circuit further comprises at least two external ports which are corresponding to at least two output ports one-to-one, and a switching circuit which is arranged on the output circuit board for controlling the switching on/off status between the output ports and the external ports which are correspondingly set to realize the switching of the different output modes. When in switch between the different output modes by using the output circuit, the frequent replacement of a connecting line is unnecessary, the errors on the operation can be avoided, the frequent insertion and the pullout of the output ports are further unnecessary, and the damages on the output ports caused by the frequent insertion and the pullout are avoided. The operation is convenient, the time for the whole test process is shortened and the test efficiency is improved.
Description
Technical field
The present invention relates to a kind of output circuit, relate in particular to a kind ofly when changing output mode, do not need to change the output circuit of the mode of connection.
Background technology
Present chip, for example, acoustic processing chip and picture processing chip are generally all supported multiple output mode.Take picture processing chip as example, generally all support compound output mode, S-video (Separate Video, two components) pattern, aberration output mode and VGA (Video Graphic Array, Video Graphics Array) and CIF (Common Intermediate Format, standardized images form) pattern.Every kind of output mode corresponds respectively to corresponding output port.When the pattern that output is scheduled to, every kind of output port corresponding to output mode need to be connected on the electronic equipment of supporting this output mode.
And, all be separate between the mode of connection of every kind of output mode, that is to say, when changing output mode, need to carry out independently wiring according to every kind of output mode, the change mode of connection that like this will be frequent could be exported corresponding video mode or audio mode or other measurement parameter.
The way that often changes the mode of connection is very easy to cause the test result mistake because of tester's operate miss, and often changes the mode of connection and not only lose time, and plug is also easily to the output port injury frequently.
Above-mentioned is the problem that prior art exists that illustrated as an example of picture processing chip example, and also there is similar problem in the chip of other types certainly.
Summary of the invention
The purpose of this invention is to provide a kind of output circuit, to solve at present when changing output mode, need often to change the problem of the mode of connection.Output circuit of the present invention comprises:
The output circuit plate;
Be arranged on the process chip on the described output circuit plate;
At least two output ports for the signal of exporting described process chip generation;
Described at least two output ports are corresponding at least two kinds of output modes;
The output port of any two kinds of output modes in described at least two kinds of output modes is different;
It is characterized in that, also comprise:
With described at least two output ports at least two external-connected ports one to one;
Be arranged on the commutation circuit on the described output circuit plate, be used for the corresponding output port that arranges of control and the break-make between the external-connected port, to realize the switching of different output modes.
Described at least two output port outputting video signals or audio signal or measurement parameter.
When described at least two kinds of output port outputting video signals, described at least two kinds of output modes are video output mode;
When described at least two kinds of output port output audio signals, described at least two kinds of output modes are the audio frequency output mode.
Described video output mode comprises:
Composite mode, two component patterns, aberration pattern and Video Graphics Array pattern.
Described commutation circuit comprises:
Corresponding to the first switch that each output port arranges respectively, each in described the first switch connects respectively corresponding first output port and first external-connected port, and described the first external-connected port is corresponding with described the first output port.
Described commutation circuit comprises: Programmable Logic Controller and at least two second switches that arrange respectively corresponding to each output port, in the described second switch each connects respectively corresponding first output port and first external-connected port, and described the first external-connected port is corresponding with described the first output port;
Described Programmable Logic Controller is connected with in the described second switch each respectively, is used for according to the pattern control described second switch corresponding with pattern described to be exported to be exported.
Described commutation circuit comprises:
Corresponding to the relay that each output port arranges respectively, each in the described relay connects respectively corresponding first output port and first external-connected port, and described the first external-connected port is corresponding with described the first output port;
The 3rd switch of corresponding setting with described output mode;
Each described the 3rd switch connects the 3rd relay, and described the 3rd relay is the relay that the output port of the output mode corresponding with described the 3rd switch connects;
Power supply, positive pole are connected to each described output port, and negative pole is connected to the end that each described the 3rd switch is not connected with relay.
Compared with prior art, the present invention has following beneficial effect:
Compare with existing output circuit, the output port of output circuit plate of the present invention is connected with the input port of external equipment by a commutation circuit.Unlatching by the elements such as switch of control in the commutation circuit or close just can be switched between multiple output mode corresponding to output port.Therefore, when having avoided the change output mode, need often to change the way of the mode of connection.
When between different output modes, switching, do not need to change frequently connecting line, thereby avoided operational error, and, do not need to plug frequently output port, avoided plugging frequently the damage that output port is caused.Simultaneously, operation is very easy, shortened the time of whole test process, improved testing efficiency.
Description of drawings
Fig. 1 is the output circuit schematic diagram of the first embodiment of the present invention;
Fig. 2 is the output circuit schematic diagram of the second embodiment of the present invention;
Fig. 3 is the output circuit schematic diagram of the third embodiment of the present invention.
Embodiment
The present invention makes output port be connected with external-connected port by commutation circuit in the commutation circuit that output circuit setting is connected with output port.External equipment communicates by external-connected port and output port.Commutation circuit is comprised of elements such as switch or relays, and the unlatching by control switch and relay or close just can not need to change the mode of connection, and reach the purpose of mutually switching between various output mode.
Below in conjunction with accompanying drawing the specific embodiment of the present invention is described in further detail.
The＜the first embodiment 〉
With reference to figure 1, Fig. 1 is the output circuit schematic diagram of the first embodiment of the present invention.Comprise among Fig. 1: output circuit and external-connected port 1 ' to 5 '.Output circuit is arranged on the output circuit plate, comprising: output port 1 to 5 and the commutation circuit of process chip, process chip.The output port 1 to 5 of process chip is used for exporting the output mode of process chip.Commutation circuit is comprised of 5 switch A, B, C, D and E.Output port 1 to 5 is connected respectively switch A, B, C, D and E.Switch A, B, C, D and E are connected and are connected with corresponding external-connected port 1 ' to 5 '.The switch of present embodiment is mechanical switch, can manual mode realize.
Present embodiment can be applied to video field, audio area or other carries out the field of parameter testing.
When being applied to video field, the output circuit plate describes as example with SV (Silicon Verification, silicon checking) plate, the picture processing chip of process chip take model as VC0702.
This picture processing chip can be exported four kinds of output modes, totally 13 kinds of way of outputs.Wherein, port one and 2 is in conjunction with output Svideo pattern;
Port one, 2 and 3 is in conjunction with output aberration pattern, comprised NTSC (National TelevisionStandards Committee, U.S.'s national television standards committee), be two kinds of way of outputs of quadrature amplitude balance standard and PAL (PhaseAlternate Line, quadrature amplitude balance Phase Alternate Line);
Port one, 2,3,4 and 5 is in conjunction with outputting VGA and CIF pattern.
Set in advance above-mentioned 13 kinds of way of outputs on the output circuit plate, can select any one mode wherein to export.
When external equipment was TV, external-connected port included only 1 ' to 3 '.
After selecting to export in the Svideo mode, Closing Switch 1 and 2 simultaneously, thereby set up output port 1 and 2 and external-connected port 1 ' and 2 ' between path, process chip is with Svideo pattern outputting video signal.
After selecting to export in the NTSC mode, Closing Switch 1,2 and 3, set up output port 1,2 and 3 and the input port 1 ', 2 ' and 3 ' of external equipment between path, process chip is with aberration pattern outputting video signal.
After selecting to export in the YcbCr mode, Closing Switch 3 is set up the path between the input port 3 ' of output port 3 and external equipment, and with the composite mode outputting video signal.
When external equipment is display, comprise above-mentioned 5 external-connected ports 1 ' to 5 '.
After selection was exported in the VGA mode, Closing Switch 1 to 5 was set up the path between output port 1 to 5 and the external-connected port 1 ' to 5 ', and process chip is with VGA pattern outputting video signal.
Can find out from above-mentioned explanation, only when changing external equipment, just need to change the mode of connection, again plug port.And on a kind of external equipment, if there is the different way of outputs, switch between the different way of outputs as long as just can be implemented in by Closing Switch, and do not need again to plug port, avoided plugging frequently the damage that output port is caused.Do not need to change frequently connecting line yet, thereby guaranteed the accuracy that operates.
When being applied to audio area, also can control the audio frequency output mode with aforesaid way.Set in advance the audio frequency output mode at the output circuit plate, then, select a kind of audio frequency output mode.For example, when selecting to export with stereo mode, the switch of the corresponding connection of closed output port with this pattern is set up output port and external equipment, loudspeaker for example, between path, namely can the stereo mode output audio signal.
When the audio frequency output mode of selecting other, when for example exporting with the output of 5.1 sound channel modes or with the pattern of surround channel, can be in the manner described above, the switch that the output port that closed and this output mode is corresponding connects is exported the output mode of selection.
When being applied in above-mentioned audio area, also has the effect when being applied to video field.
When being applied to the field of other parameter (such as image parameter, temperature, humidity etc.) test, as long as closed corresponding switch, to export corresponding parameter, just can utilize the parameter of output to judge or operate or on the basis of output parameter, further calculate.For example, after the switch A closure, the first signal of output is used for test the first parameter; After switch A and the B while closure, the first signal of output and secondary signal are used for test the second parameter jointly; After switch A, B and the C while closure, the first signal of output, secondary signal and the 3rd signal are used for testing the 3rd parameter jointly.Like this, test the first parameter, only need Closing Switch A, test the second parameter, only need simultaneously Closing Switch A and B, test the 3rd parameter, only Closing Switch A, B and C get final product simultaneously.Especially when the measurement above-mentioned parameter that needs repeatedly, just do not need to change frequently the mode of connection, thereby avoided plugging frequently the damage that output port is caused.
The＜the second embodiment 〉
Present embodiment is different from the first embodiment is that the execution mode of commutation circuit is different.With reference to figure 2, Fig. 2 is the output circuit schematic diagram of the second embodiment of the present invention.
Commutation circuit among Fig. 2 comprises: Programmable Logic Controller and switch A ', B ', C ', D ', E '.Programmable Logic Controller is connected with switch A with process chip respectively, B ', C ', D ', E ' are connected, be used for according to the order from process chip, the break-make of difference control switch A ', B ', C ', D ', E ', the perhaps break-make of the several combinations among while control switch A ', B ', C ', D ', the E '.
When present embodiment was applied to video field, still the SV plate in the first embodiment and picture processing chip described as example.
When external equipment was TV, external-connected port included only 1 ' to 3 '.
After selection is exported in the Svideo mode, process chip can be sent to Programmable Logic Controller the order of output Svideo pattern, Programmable Logic Controller is according to this order, the tabulation corresponding with pattern to be exported according to the switch of in Programmable Logic Controller, storing in advance (here switch 1 and 2 corresponding Svideo output modes), while Closing Switch 1 and 2, thereby set up output port 1 and 2 and external-connected port 1 ' and 2 ' between path, process chip is with Svideo pattern outputting video signal.
After selection is exported in the NTSC mode, process chip can be sent to Programmable Logic Controller the order of output NTSC mode, Programmable Logic Controller is according to this order (here switch 1,2 and 3 corresponding aberration output modes), while Closing Switch 1,2 and 3, set up the path between output port 1 and the external-connected port 1 ', 2 ' and 3 ', process chip is with aberration pattern outputting video signal.
After selection is exported in the YcbCr mode, process chip can be sent to Programmable Logic Controller the order of output YcbCr mode, Programmable Logic Controller is according to this order (switch 3 corresponding compound output modes here), Closing Switch 3, set up the path between output port 3 and the external-connected port 3 ', process chip is with the composite mode outputting video signal.
When external equipment was display, external-connected port comprised 1 ' to 5 '.
After selecting with the output of VGA pattern, process chip can be sent to Programmable Logic Controller the order of outputting VGA pattern, Programmable Logic Controller is according to this order, while Closing Switch 1 to 5, set up the path between output port 1 to 5 and the external-connected port 1 ' to 5 ', process chip is with VGA pattern outputting video signal.
When being applied to audio area, also can control the audio frequency output mode with aforesaid way.Set in advance the audio frequency output mode at the output circuit plate, then, select a kind of audio frequency output mode.For example, when selection is exported with stereo mode, process chip can be sent to Programmable Logic Controller the order of output stereo mode, Programmable Logic Controller is according to this order, simultaneously the switch of the corresponding connection of output port of closed and this pattern is set up output port and external equipment, for example loudspeaker, between path, namely can the stereo mode output audio signal.
When the audio frequency output mode of selecting other, when for example exporting with the output of 5.1 sound channel modes or with the pattern of surround channel, can in the manner described above, control the closure of the switch of the output port connection corresponding with this output mode and export the audio signal corresponding with selected output mode.
When being applied to the field of other parameter testing, the order of certain pattern of output that Programmable Logic Controller can send according to process chip, the closure of the switch by the control output port connection corresponding with this output mode is exported corresponding parameter.Then, can utilize the parameter of output to judge or operate or on the basis of output parameter, carry out further computing.For example, after the switch A ' closure, the first signal of output is used for test the first parameter; After switch A ' and B ' the while closure, the first signal of output and secondary signal are used for test the second parameter jointly; After switch A ', B ' and C ' the while closure, the first signal of output, secondary signal and the 3rd signal are used for testing the 3rd parameter jointly.Like this, when test parameter, Programmable Logic Controller will come switch corresponding to parameter closed and to be measured with corresponding relation between the parameter to be measured according to above-mentioned pre-stored each switch, thereby makes output port export the signal of parameter to be measured.When testing the first parameter, only need Closing Switch A ', test the second parameter, only need simultaneously Closing Switch A ' and B ', test the 3rd parameter, only Closing Switch A ', B ' and C ' get final product simultaneously.Especially when the measurement above-mentioned parameter that needs repeatedly, just do not need to change frequently the mode of connection, thereby avoided plugging frequently the damage that output port is caused.
The＜the three embodiment 〉
This enforcement is the third execution mode of commutation circuit.With reference to figure 3, Fig. 3 is the output circuit schematic diagram of the third embodiment of the present invention.
When being applied to video field, the picture processing chip that still adopts in the first embodiment in the present embodiment describes as example.
Commutation circuit among Fig. 3 comprises: relay 6 to 10 and switch A ", B ", C ", D ", and power supply.Wherein, output port 1 to 5 is connected with external-connected port 1 ' to 5 ' by relay 6 to 10 respectively.Switch A ", B ", C ", D " corresponding different output mode respectively, the corresponding relay that connects of each switch, the corresponding relay that connects be and above-mentioned switch A ", B ", C ", D " relay of output port connection of corresponding output mode.Positive source is connected with output port 1 to 5 respectively, negative pole respectively with switch A ", B ", C ", D " end that is not connected with above-mentioned relay connects.Because picture processing chip can be exported four kinds of patterns, but always has 5 output ports, therefore, several ports of exporting a kind of pattern are connected on the switch jointly by relay respectively.The below describes respectively the connected mode of every kind of output mode:
The first: switch A " be connected with relay 8;
The second: switch B " be connected with being connected with relay 6 respectively;
The third: switch C " be connected with being connected with relay 6,7 respectively;
The 4th kind: switch D " be connected with relay 6 to 10 respectively.
When external equipment was TV, external-connected port included only 1 ' to 3 '.
As switch A " when closed, power supply makes its conducting to 8 one high potentials of relay, and other switches disconnect at this moment, therefore, what add on other relay is electronegative potential and closure.Switch A " after the closure, output 3 is connected, and sets up the connecting path of output 3 and TV, the vision signal of process chip output composite mode.
As switch B " when closed, power supply makes its conducting to relay 6 and 7 one high potentials, and other switches disconnect at this moment, therefore, what add on other relay is electronegative potential and closure.Switch B " after the closure, output 1 and 2 is connected, set up output 1 and 2 with the connecting path of TV, process chip is exported the vision signal of Svideo pattern.
As switch C " when closed, power supply makes its conducting to relay 6,7 and 8 one high potentials, and other switches disconnect at this moment, therefore, what add on other relay is electronegative potential and closure.Switch C " after the closure, output 1,2 and 3 is connected, set up output 1,2 and 3 with the connecting path of TV, process chip is exported the vision signal of aberration pattern.
When external equipment was display, external-connected port comprised 1 ' to 5 '.
As switch D " when closed, power supply makes its conducting to 6 to 10 1 high potentials of relay.Switch D " after the closure, output 1 to 5 is connected, and sets up the connecting path of output 1 to 5 and display, the vision signal of process chip outputting VGA and CIF pattern.
When being applied to audio area, set in advance the audio frequency output mode at the output circuit plate, then, select a kind of audio frequency output mode.For example, when selection was exported with stereo mode, switch corresponding to closed selected stereo mode can be set up the path between corresponding output port and the external device, and export corresponding audio signal with stereo mode.
For with 5.1 sound channel modes output or with the pattern output of surround channel the time, also be according to the aforesaid operations mode, as long as the closed switch corresponding with selected output mode, can set up the path between corresponding output port and the external device, thereby with corresponding output mode output audio signal.
When being applied to the field of other parameter testing, because the parameter that the output of different output ports is different, therefore, as long as closed corresponding switch, just can conducting the corresponding output port that connects of this switch, exporting corresponding parameter, and can utilize the parameter of output to judge or operate or on the basis of output parameter, further calculate.For example, switch A " after the closure, the first signal of output is used for test the first parameter; Switch A " and B " simultaneously after the closure, the first signal of output and secondary signal are used for test the second parameter jointly; Switch A ", B " and C " simultaneously after the closure, the first signal of output, secondary signal and the 3rd signal are used for testing the 3rd parameter jointly.Like this, according to the mode of connection of describing among the 3rd embodiment above, in the time will testing the first parameter, only need Closing Switch A ", test the second parameter, only need simultaneously Closing Switch A " and B "; test the 3rd parameter, only need simultaneously Closing Switch A ", B " and C " get final product.Especially when the measurement above-mentioned parameter that needs repeatedly, just do not need to change frequently the mode of connection, thereby avoided plugging frequently the damage that output port is caused.
External equipment among above-mentioned the first to the 3rd embodiment is that output circuit is the explanation of carrying out as an example of the SV plate example take TV and display as example, and certainly, output circuit also can be the circuit of miscellaneous equipment, for example, and the circuit of DVD.When external device not simultaneously, output mode may be not identical, therefore, the number of external-connected port is not limited to embodiments of the invention, also may have more.
The above only is preferred implementation of the present invention; should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (4)
1. output circuit comprises:
The output circuit plate;
Be arranged on the process chip on the described output circuit plate;
At least two output ports for the signal of exporting described process chip generation;
Described at least two output ports are corresponding at least two kinds of output modes;
The output port of any two kinds of output modes in described at least two kinds of output modes is different;
It is characterized in that, also comprise:
With described at least two output ports at least two external-connected ports one to one;
Be arranged on the commutation circuit on the described output circuit plate, be used for the corresponding output port that arranges of control and the break-make between the external-connected port, to realize the switching of different output modes;
Wherein, described commutation circuit comprises:
Corresponding to the first switch that each output port arranges respectively, each in described the first switch connects respectively corresponding first output port and first external-connected port, and described the first external-connected port is corresponding with described the first output port;
Perhaps, described commutation circuit comprises: Programmable Logic Controller and at least two second switches that arrange respectively corresponding to each output port, in the described second switch each connects respectively corresponding first output port and first external-connected port, and described the first external-connected port is corresponding with described the first output port;
Described Programmable Logic Controller is connected with in the described second switch each respectively, is used for according to the pattern control described second switch corresponding with pattern described to be exported to be exported;
Perhaps, described commutation circuit comprises:
Corresponding to the relay that each output port arranges respectively, each in the described relay connects respectively corresponding first output port and first external-connected port, and described the first external-connected port is corresponding with described the first output port;
The 3rd switch of corresponding setting with described output mode;
Each described the 3rd switch connects the 3rd relay, and described the 3rd relay is the relay that the output port of the output mode corresponding with described the 3rd switch connects;
Power supply, positive pole are connected to each described output port, and negative pole is connected to the end that each described the 3rd switch is not connected with relay.
2. output circuit as claimed in claim 1 is characterized in that, described at least two output port outputting video signals or audio signal or measurement parameter.
3. output circuit as claimed in claim 2 is characterized in that, when described at least two kinds of output port outputting video signals, described at least two kinds of output modes are video output mode;
When described at least two kinds of output port output audio signals, described at least two kinds of output modes are the audio frequency output mode.
4. output circuit as claimed in claim 3 is characterized in that, described video output mode comprises:
Composite mode, two component patterns, aberration pattern and Video Graphics Array pattern.
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| Application Number | Priority Date | Filing Date | Title |
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| CN 200810224687 CN101394491B (en) | 2008-10-23 | 2008-10-23 | Output circuit |
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| CN 200810224687 CN101394491B (en) | 2008-10-23 | 2008-10-23 | Output circuit |
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| CN101394491A CN101394491A (en) | 2009-03-25 |
| CN101394491B true CN101394491B (en) | 2013-04-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN102104792B (en) * | 2009-12-18 | 2013-11-20 | 鸿富锦精密工业（深圳）有限公司 | Control system and method for signal test of video image array |
Citations (4)
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| US4535357A (en) * | 1983-04-08 | 1985-08-13 | Tektronix, Inc. | Video signal processing circuit and method for blanking signal insertion with transient distortion suppression |
| CN2048655U (en) * | 1989-04-11 | 1989-11-29 | 王迁唐 | Video allocation amplifier |
| CN1592357A (en) * | 2003-09-02 | 2005-03-09 | 三洋电机株式会社 | Horizontal outline correcting circuit |
| CN101117019A (en) * | 2006-07-31 | 2008-02-06 | 广西工学院 | Temperature control device and temperature control method for fully automatic injection blow plastic hollow molding machine |
-
2008
- 2008-10-23 CN CN 200810224687 patent/CN101394491B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4535357A (en) * | 1983-04-08 | 1985-08-13 | Tektronix, Inc. | Video signal processing circuit and method for blanking signal insertion with transient distortion suppression |
| CN2048655U (en) * | 1989-04-11 | 1989-11-29 | 王迁唐 | Video allocation amplifier |
| CN1592357A (en) * | 2003-09-02 | 2005-03-09 | 三洋电机株式会社 | Horizontal outline correcting circuit |
| CN101117019A (en) * | 2006-07-31 | 2008-02-06 | 广西工学院 | Temperature control device and temperature control method for fully automatic injection blow plastic hollow molding machine |
Non-Patent Citations (1)
| Title |
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| JP特开平10-308885A 1998.11.17 |
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Effective date of registration: 20141115 Address after: 226300, No. 999, Tong Jin Road, Nantong hi tech Industrial Development Zone, Jiangsu Patentee after: JIANGSU MONTMERY ELEVATOR CO., LTD. Address before: 214000 national integrated circuit design Park, 21-1 Changjiang Road, New District, Jiangsu, Wuxi Province, 610 Patentee before: Wuxi Vimicro Co., Ltd. |
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| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130417 Termination date: 20171023 |