CN101742359A - Video detection method, circuit board detection method and device - Google Patents
Video detection method, circuit board detection method and device Download PDFInfo
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- CN101742359A CN101742359A CN201010300825A CN201010300825A CN101742359A CN 101742359 A CN101742359 A CN 101742359A CN 201010300825 A CN201010300825 A CN 201010300825A CN 201010300825 A CN201010300825 A CN 201010300825A CN 101742359 A CN101742359 A CN 101742359A
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Abstract
The embodiment of the invention relates to a video detection method, which mainly comprises the following steps of: acquiring a phase point to be detected from a static picture acquired by current video signal output; judging whether the phase point to be detected is within a predetermined phase point range; and if the phase point to be detected is within the predetermined phase point range, showing that the current video signal output is qualified. The embodiment of the invention also provides a circuit board detection method, a corresponding video detection device and a circuit board detection device. The video detection method, the circuit board detection method and the corresponding device in the embodiment of the invention can provide a detection standard for the video signal output, so the problem of an unstable detection result for video signal output detection by a detection mode dependent on subjective experience is solved. Therefore, the working efficiency is improved. Furthermore, the video detection device has simple operation and low cost, and the production cost is lowered.
Description
Technical field
The present invention relates to the signal processing field, relate in particular to a kind of video detecting method, wiring board detection method and device.
Background technology
At present when wiring board is carried out classification and Detection, by switching signal source manually, adopt the voltage detecting of different detecting instruments in the wiring board integrated circuit (IC) chip, between detecting, vision signal output detection and audio signal output change, and above-mentioned every detection all is to go to judge according to oneself subjective criterion, the detection mode of this dependence subjective experience, make the voltage detecting of said integrated circuit chip, vision signal output detects and audio signal output is bad during every testing result fashion in detecting, reduced operating efficiency, in addition, the instrument that carries out vision signal output detection is generally import instrument, cost an arm and a leg, improved production cost.
Summary of the invention
Embodiment of the invention technical problem to be solved is, a kind of video detecting method, wiring board detection method are provided, and video detecting device, wiring board checkout gear, the vision signal standard that output detects can be provided, thereby avoid making vision signal export the in-and-out problem of testing result that detects because of the detection mode that relies on subjective experience, and then improved operating efficiency, and video detecting device is simple to operate, cost is low, and then reduced production cost.
For solving the problems of the technologies described above, the embodiment of the invention adopts following technical scheme:
A kind of video detecting method comprises:
The point mutually to be measured of the tableaux that obtains is exported in acquisition by the current video signal;
Judge described to be measured mutually whether within default phasing point range, if then described current video signal output is qualified.
A kind of wiring board detection method, described wiring board comprise the integrated circuit (IC) chip that voltage to be measured is provided, the video output point that the current video signal is provided and the audio frequency output point that current audio signals is provided, and comprising:
Obtain described voltage to be measured;
Judge according to the normal voltage of described integrated circuit (IC) chip whether described voltage to be measured is qualified,
When described voltage to be measured is qualified, obtain to export the point mutually to be measured of the tableaux that obtains by described current video signal;
Judge described to be measured mutually whether within default phasing point range,
If then described current video signal output is qualified, obtain the changing voltage to be measured that described current audio signals output obtains;
Judge the whether fixed voltage coupling during with described current audio signals input of described changing voltage to be measured,
If it is qualified that then described wiring board detects.
A kind of video detecting device comprises:
The video decode module is used to obtain the point mutually to be measured of the tableaux that obtained by the output of current video signal;
Whether judge module is used to judge described to be measured mutually within default phasing point range, if then described vision signal output is qualified.
A kind of wiring board checkout gear, this wiring board checkout gear comprises based on the wiring board of the audio frequency output point that comprises the integrated circuit (IC) chip that voltage to be measured is provided, the video output point that the current video signal is provided and current audio signals is provided:
Voltage detection module is used for judging according to the normal voltage of described integrated circuit (IC) chip whether the voltage described to be measured that obtains is qualified;
The Video Detection module, be used for obtaining described voltage to be measured when qualified when described voltage detection module detects, the point mutually to be measured of the tableaux that obtains is exported in acquisition by described current video signal, and judge described to be measured mutually whether within default phasing point range, to indicate described current video signal output whether qualified;
The audio detection module, be used for obtaining described to be measured putting mutually within described default phasing point range when described Video Detection module detects, export when qualified to indicate described current video signal, obtain the changing voltage to be measured that described current audio signals output obtains, and judge the whether fixed voltage coupling during with described current audio signals input of described changing voltage to be measured, if it is qualified then to indicate described wiring board to detect.
The beneficial effect of the embodiment of the invention is:
By a kind of video detecting method is provided, wiring board detection method and corresponding video detecting device, the wiring board checkout gear, it mainly is the point mutually to be measured that obtains to export the tableaux that obtains earlier by the current video signal, judge described to be measured mutually whether within default phasing point range then, if, then described current video signal output is qualified, like this, the vision signal standard that output detects can be provided, thereby avoid making vision signal export the in-and-out problem of testing result that detects because of the detection mode that relies on subjective experience, and then improved operating efficiency, and video detecting device is simple to operate, cost is low, and then has reduced production cost.
Below in conjunction with accompanying drawing the embodiment of the invention is described in further detail.
Description of drawings
Fig. 1 is the main flow chart of the wiring board detection method of the embodiment of the invention;
Fig. 2 is the primary structure figure of the video detecting device of the embodiment of the invention;
Fig. 3 is the primary structure figure of the wiring board checkout gear of the embodiment of the invention.
Embodiment
As shown in Figure 1, the embodiment of the invention provides a kind of wiring board detection method, it is based on a kind of wiring board, this wiring board includes provides one or more integrated circuits of voltage to be measured (Integrated Circuit, IC) chip, one or more video output points that the current video signal is provided and one or more audio frequency output points that current audio signals is provided etc., the main flow process of this wiring board detection method is as described below:
101, the instruction of host computer is waited in initialization;
102, the instruction of accepting host computer begins the test of wiring board;
103, the voltage of measurement circuit plate IC chip at first obtains the voltage to be measured on the IC chip, particularly, can sample by an ADC and obtain each voltage to be measured, and each IC chip all can have different voltage to be measured;
104, judge according to the normal voltage of IC chip whether voltage to be measured is qualified, particularly, by comparing the predetermined normal voltage to be measured voltage corresponding in the IC chip specifications with it, see whether both are consistent, if, voltage then to be measured is qualified, and next step carries out 105, otherwise carries out 111;
105, switching signal source is undertaken by the road according to the instruction that receives that vision signal output detects and audio signal output detects, and when the signal of each road of test, at first selective gate is tested then, carries out 106 vision signal output earlier and detects;
106, vision signal output detects, the point mutually to be measured of the tableaux that obtains is exported in acquisition by the current video signal, particularly, for any one secondary tableaux always to a point mutually should be arranged, and whether the video detecting method of the embodiment of the invention, wiring board detection method promptly utilize this to put mutually to come the output of test video signal qualified, and this tableaux to be measured puts mutually then that the available video decoding chip reads acquisition;
107, judge 106 obtain to be measured mutually whether within default phasing point range, particularly, the set of point mutually that default phasing point range is obtained when exporting same tableaux by some reference video signals is determined, that is to say, by testing output and then the definite default phasing point range of a large amount of machines to same tableaux, in order to allow certain error, default phasing point range further can and preset the error permissible range by above-mentioned set mutually and determine jointly, if to be measured dropping on mutually in the default phasing point range, then the output of current video signal is qualified, and next step carries out 108, otherwise carries out 111;
Below by a described video detecting method of the present invention of specific embodiment explanation 106-107, find by the substantive test experiment, when the composite video signal of TSC-system formula is exported the tableaux of red screen, it is put mutually and generally drops on 0x0644 in this scope between the 0x06DC, in order to allow certain error, we can be set in 0x0620 to default phasing point range to the scope between the 0x06f0, certainly, the vision signal of extended formatting is exported the default phasing point range of the tableaux of red screen and also can be set like this, and vision signal is exported the default phasing point range of other tableauxs and also can similarly be set;
108, audio signal output detects, obtain the changing voltage to be measured that current audio signals output obtains, particularly, the size of audio amplitude can show as the size of its corresponding conversion gained voltage usually, when the audio signal of input input fixed voltage (fixed frequency) arrived receiving terminal, receiving terminal can obtain the changing voltage to be measured (being generally magnitude of voltage) that audio signal output obtains by ADC;
109, judge the fixed voltage coupling when whether changing voltage to be measured is imported with current audio signals, particularly, for DVD player, standard signal is engraved on the DVD dish, and the fixed voltage during the audio signal input can obtain from the DVD dish, and for DVB, standard signal sends by signal generator, so the fixed voltage in audio signal when input can obtain from signal generator;
110, the fixed voltage coupling when changing voltage to be measured and current audio signals input, then the audio signal output detection is qualified, and then the detection of whole wiring board is qualified, otherwise, carry out 111;
111, the indication wiring board detects defective, and changes execution 102 and accept the instruction of host computer again to carry out the test of wiring board again;
112, when 102 instructions that receive were END instruction, flow process finished.
Video detecting device, wiring board checkout gear to the embodiment of the invention describes below.
As shown in Figure 2, the video detecting device of the embodiment of the invention mainly comprises video decode module 201, and the judge module 202 that links to each other with video decode module 201, wherein:
As shown in Figure 3, the wiring board checkout gear of the embodiment of the invention, this wiring board checkout gear is based on the wiring board of the audio frequency output point that comprises the integrated circuit (IC) chip that voltage to be measured is provided, the video output point that the current video signal is provided and current audio signals is provided, comprise voltage detection module 301, audio detection module 303, and the Video Detection module 302 that links to each other with voltage detection module 301, audio detection module 303 respectively, wherein:
Implement the video detecting method of the described embodiment of the invention of above-mentioned 106-107 step and video detecting device shown in Figure 2, the vision signal standard that output detects can be provided, thereby avoid making vision signal export the in-and-out problem of testing result that detects because of the detection mode that relies on subjective experience, and then improved operating efficiency, and video detecting device is simple to operate, cost is low, and then has reduced production cost; And implement the wiring board detection method of the above-mentioned embodiment of the invention shown in Figure 1 and wiring board checkout gear shown in Figure 3, not only can realize the technique effect of above-mentioned video detecting method, the voltage detecting standard of wiring board IC chip, the standard that audio signal output detects can also be provided, thereby avoid the voltage detecting of IC chip, the in-and-out problem of testing result that audio signal output detects further having improved operating efficiency because of the detection mode that relies on subjective experience makes.
All applicable to the various electronic product complete machines that have audio frequency and video output, it has wide range of applications for the video detecting method of the embodiment of the invention, wiring board detection method, video detecting device and wiring board checkout gear.
In addition, one of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method, be to instruct relevant hardware to finish by program, described program can be stored in the computer-readable recording medium, this program can comprise the flow process as the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-Only Memory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
The above is the specific embodiment 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 are considered as protection scope of the present invention.
Claims (9)
1. a video detecting method is characterized in that, comprising:
The point mutually to be measured of the tableaux that obtains is exported in acquisition by the current video signal;
Judge described to be measured mutually whether within default phasing point range, if then described current video signal output is qualified.
2. the method for claim 1 is characterized in that, the set of point mutually that described default phasing point range is obtained when exporting same described tableaux by some reference video signals is determined.
3. method as claimed in claim 2 is characterized in that, described default phasing point range is by described set mutually and preset the error permissible range and determine jointly.
4. wiring board detection method, described wiring board comprises the integrated circuit (IC) chip that voltage to be measured is provided, the video output point that the current video signal is provided and the audio frequency output point that current audio signals is provided, and it is characterized in that, comprising:
Obtain described voltage to be measured;
Judge according to the normal voltage of described integrated circuit (IC) chip whether described voltage to be measured is qualified,
When described voltage to be measured is qualified, obtain to export the point mutually to be measured of the tableaux that obtains by described current video signal;
Judge described to be measured mutually whether within default phasing point range,
If then described current video signal output is qualified, obtain the changing voltage to be measured that described current audio signals output obtains;
Judge the whether fixed voltage coupling during with described current audio signals input of described changing voltage to be measured,
If it is qualified that then described wiring board detects.
5. a video detecting device is characterized in that, comprising:
The video decode module is used to obtain the point mutually to be measured of the tableaux that obtained by the output of current video signal;
Whether judge module is used to judge described to be measured mutually within default phasing point range, if then described vision signal output is qualified.
6. device as claimed in claim 5 is characterized in that, the set of point mutually that described default phasing point range is obtained when exporting same described tableaux by some reference video signals is determined.
7. device as claimed in claim 6 is characterized in that, described default phasing point range is by described set mutually and preset the error permissible range and determine jointly.
8. wiring board checkout gear, this wiring board checkout gear is characterized in that based on the wiring board of the audio frequency output point that comprises the integrated circuit (IC) chip that voltage to be measured is provided, the video output point that the current video signal is provided and current audio signals is provided, comprising:
Voltage detection module is used for judging according to the normal voltage of described integrated circuit (IC) chip whether the voltage described to be measured that obtains is qualified;
The Video Detection module, be used for obtaining described voltage to be measured when qualified when described voltage detection module detects, the point mutually to be measured of the tableaux that obtains is exported in acquisition by described current video signal, and judge described to be measured mutually whether within default phasing point range, to indicate described current video signal output whether qualified;
The audio detection module, be used for obtaining described to be measured putting mutually within described default phasing point range when described Video Detection module detects, export when qualified to indicate described current video signal, obtain the changing voltage to be measured that described current audio signals output obtains, and judge the whether fixed voltage coupling during with described current audio signals input of described changing voltage to be measured, if it is qualified then to indicate described wiring board to detect.
9. device as claimed in claim 8, it is characterized in that, described voltage detection module comprises an AD mouth that is used to obtain described voltage to be measured, described Video Detection module comprises and is used to obtain described video decoding chip mutually to be measured that described audio detection module comprises the 2nd AD mouth that is used to obtain described changing voltage to be measured.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103008257A CN101742359B (en) | 2010-01-27 | 2010-01-27 | Circuit board detection method and device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010103008257A CN101742359B (en) | 2010-01-27 | 2010-01-27 | Circuit board detection method and device |
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| CN101742359A true CN101742359A (en) | 2010-06-16 |
| CN101742359B CN101742359B (en) | 2012-05-16 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104469350A (en) * | 2014-12-11 | 2015-03-25 | 武汉精测电子技术股份有限公司 | Method for detecting TTL video signals generated by video source |
| CN111721780A (en) * | 2020-06-27 | 2020-09-29 | 常州市瑾瑜精密科技有限公司 | Control circuit board detection method |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH10285616A (en) * | 1997-04-04 | 1998-10-23 | Tektronix Inc | Automatic video quality measuring method and device therefor |
| CN101184241B (en) * | 2007-12-03 | 2010-07-14 | 中兴通讯股份有限公司 | Image automatic detection method and apparatus |
| CN101437173A (en) * | 2008-11-28 | 2009-05-20 | 四川长虹电器股份有限公司 | Instrument for detecting flat-plate television failure and detection method thereof |
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2010
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104469350A (en) * | 2014-12-11 | 2015-03-25 | 武汉精测电子技术股份有限公司 | Method for detecting TTL video signals generated by video source |
| CN104469350B (en) * | 2014-12-11 | 2017-01-11 | 武汉精测电子技术股份有限公司 | Method for detecting TTL video signals generated by video source |
| CN111721780A (en) * | 2020-06-27 | 2020-09-29 | 常州市瑾瑜精密科技有限公司 | Control circuit board detection method |
| CN111721780B (en) * | 2020-06-27 | 2022-07-29 | 广东友佳智能科技有限公司 | Control circuit board detection method |
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| CN101742359B (en) | 2012-05-16 |
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