CN101742359B - Circuit board detection method and device - Google Patents

Circuit board detection method and device Download PDF

Info

Publication number
CN101742359B
CN101742359B CN2010103008257A CN201010300825A CN101742359B CN 101742359 B CN101742359 B CN 101742359B CN 2010103008257 A CN2010103008257 A CN 2010103008257A CN 201010300825 A CN201010300825 A CN 201010300825A CN 101742359 B CN101742359 B CN 101742359B
Authority
CN
China
Prior art keywords
measured
voltage
picture point
qualified
video
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN2010103008257A
Other languages
Chinese (zh)
Other versions
CN101742359A (en
Inventor
张永辉
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
ZHAOCHI CO Ltd SHENZHEN
Original Assignee
ZHAOCHI CO Ltd SHENZHEN
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by ZHAOCHI CO Ltd SHENZHEN filed Critical ZHAOCHI CO Ltd SHENZHEN
Priority to CN2010103008257A priority Critical patent/CN101742359B/en
Publication of CN101742359A publication Critical patent/CN101742359A/en
Application granted granted Critical
Publication of CN101742359B publication Critical patent/CN101742359B/en
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Landscapes

  • Tests Of Electronic Circuits (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

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

Wiring board detection method and device
Technical field
The present invention relates to the signal processing field, relate in particular to a kind of wiring board detection method and device.
Background technology
At present when wiring board is carried out classification and Detection,, adopt the different detection instrument to detect and audio signal output is changed between detecting in voltage detecting, the vision signal output of wiring board IC chip by switching signal source manually; And above-mentioned each item to detect all be to go judgement according to own subjective criterion; The detection mode of this dependence subjective experience, make voltage detecting, the vision signal output of said integrated circuit chip detect and audio signal output bad during each item testing result fashion in detecting, reduced operating efficiency; In addition; The instrument that carries out vision signal output detection is generally import instrument, costs an arm and a leg, and has improved production cost.
Summary of the invention
Embodiment of the invention technical problem to be solved is; A kind of wiring board detection method is 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 wiring board detection method, said wiring board comprise the 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 said voltage to be measured;
Judge according to the normal voltage of said IC chip whether said voltage to be measured is qualified,
When said voltage to be measured is qualified, obtain to export the picture point to be measured of the tableaux that obtains by said current video signal;
Judge whether said picture point to be measured is presetting within the picture point scope,
If then said current video signal output is qualified, obtain the changing voltage to be measured that said current audio signals output obtains;
Judge the whether fixed voltage coupling during with said current audio signals input of said changing voltage to be measured,
If it is qualified that then said wiring board detects.
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 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 said IC chip whether the voltage said to be measured that obtains is qualified;
The Video Detection module; Be used for obtaining said voltage to be measured when qualified when said voltage detection module detects; The picture point to be measured of the tableaux that obtains is exported in acquisition by said current video signal; And judge whether said picture point to be measured is presetting within the picture point scope, to indicate said current video signal output whether qualified;
The audio detection module; Be used for presetting within the picture point scope said when said Video Detection module detection obtains said picture point to be measured; To indicate said current video signal to export when qualified, obtain the changing voltage to be measured that said current audio signals output obtains, and judge the whether fixed voltage coupling during with said current audio signals input of said changing voltage to be measured; If it is qualified then to indicate said wiring board to detect.
The beneficial effect of the embodiment of the invention is:
Through a kind of wiring board detection method and corresponding wiring board checkout gear are provided, mainly be the picture point to be measured that obtains to export the tableaux that obtains earlier by the current video signal, judge then whether said picture point to be measured is presetting within the picture point scope; If; Then said 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 reduced production cost.
Below in conjunction with accompanying drawing the embodiment of the invention is done further to describe in 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 include one or more integrated circuits that voltage to be measured is provided (the main flow process of this wiring board detection method is described below for 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.:
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 through 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; Through 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 during signal, at first selective gate is tested then on each road of test, carries out 106 vision signal output earlier and detects;
106; Vision signal output detects; The picture point to be measured of the tableaux that acquisition is obtained by current video signal output, particularly, for any one secondary tableaux always to a picture point should be arranged; And whether the video detecting method of the embodiment of the invention, wiring board detection method promptly utilize this picture point to come the output of test video signal qualified, and the picture point to be measured of this tableaux then available video decoding chip reads acquisition;
107, judge whether the picture point to be measured of 106 acquisitions is presetting within the picture point scope, particularly; Preset the picture point set that is obtained when the picture point scope is exported same tableaux by some reference video signals and confirm, that is to say, through testing a large amount of machines to the output of same tableaux and then confirm to preset the picture point scope; In order to allow certain error; Presetting the picture point scope further can and preset the error permissible range by the set of above-mentioned picture point and confirm that jointly if picture point to be measured drops on and presets in the picture point scope, then the output of current video signal is qualified; Next step carries out 108, otherwise carries out 111;
Below through a described video detecting method of the present invention of specific embodiment explanation 106-107; Find through the substantive test experiment; When the composite video signal of TSC-system formula was exported the tableaux of red screen, its picture point generally dropped on 0x0644 in this scope between the 0x06DC, in order to allow certain error; We can be set in 0x0620 to the scope between the 0x06f0 presetting the picture point scope; Certainly, the vision signal of extended formatting is exported the presetting the picture point scope and also can set like this of tableaux of red screen, and the picture point scope that presets of other tableauxs of vision signal output 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 through 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 through 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 the instruction that host computer is accepted in commentaries on classics execution 102 again is 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 in the face of the embodiment of the invention describes down.
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:
Video decode module 201; Be used to obtain to export the picture point to be measured of the tableaux that obtains by the current video signal; Particularly; Always to a picture point should be arranged, and whether the video detecting device of the embodiment of the invention promptly utilizes this picture point to come the output of test video signal qualified for any one secondary tableaux, and then available this video decode module 201 of the picture point to be measured of this tableaux reads acquisition;
Judge module 202 is used to judge whether said picture point to be measured is presetting within the picture point scope, if; Then said vision signal output is qualified, particularly, presets the picture point set that is obtained when the picture point scope is exported same tableaux by some reference video signals and confirms; That is to say; Through testing a large amount of machines to the output of same tableaux and then confirm to preset the picture point scope,, preset the picture point scope and further can and preset the error permissible range and confirm jointly by above-mentioned picture point set in order to allow certain error; If picture point to be measured drops on and presets in the picture point scope, then the output of current video signal is qualified.
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 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:
Voltage detection module 301; Be used for judging according to the normal voltage of said IC chip whether the voltage said to be measured that obtains is qualified, and particularly, voltage detection module 301 is after receiving the test sign on of host computer wiring board; The voltage of measurement circuit plate IC chip; Voltage detection module 301 can comprise an AD mouth, and it can be sampled through an ADC and obtain each voltage to be measured, and each IC chip all can have different voltage to be measured;
Video Detection module 302; Be used for obtaining said voltage to be measured when qualified when said voltage detection module 301 detects, the picture point to be measured of the tableaux that obtains to obtain by said current video signal output, and judge whether said picture point to be measured is presetting within the picture point scope; To indicate said current video signal output whether qualified; Particularly, always to a picture point should be arranged, and whether the video detecting device of the embodiment of the invention promptly utilizes this picture point to come the output of test video signal qualified for any one secondary tableaux; Video decoding chip in then available this Video Detection module 302 of the picture point to be measured of this tableaux reads acquisition; Confirm and preset the picture point set that is obtained when the picture point scope is exported same tableaux by some reference video signals, that is to say, through testing a large amount of machines to the output of same tableaux and then confirm to preset the picture point scope; In order to allow certain error; Presetting the picture point scope further can and preset the error permissible range by the set of above-mentioned picture point and confirm that jointly if picture point to be measured drops on and presets in the picture point scope, then the output of current video signal is qualified;
Audio detection module 303 is used for obtaining said picture point to be measured and presetting within the picture point scope said when said Video Detection module 302 detects, and exports when qualified to indicate said current video signal; Obtain the changing voltage to be measured that said current audio signals output obtains; And judge the whether fixed voltage coupling during with said current audio signals input of said changing voltage to be measured, if it is qualified then to indicate said wiring board to detect; Particularly; The size of audio amplitude can show as the size of its corresponding conversion gained voltage usually, and 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 through ADC; 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 through signal generator, so the fixed voltage in audio signal when input can obtain from signal generator.
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 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 accomplish through program; Described program can be stored in the computer-readable recording medium, and this program can comprise the flow process like 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 an 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 improvement and retouching, these improvement and retouching also are regarded as protection scope of the present invention.

Claims (7)

1. wiring board detection method, said wiring board comprises the 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 said voltage to be measured;
Judge according to the normal voltage of said IC chip whether said voltage to be measured is qualified,
When said voltage to be measured is qualified, obtain to export the picture point to be measured of the tableaux that obtains by said current video signal;
Judge whether said picture point to be measured is presetting within the picture point scope,
If then said current video signal output is qualified, obtain the changing voltage to be measured that said current audio signals output obtains;
Judge the whether fixed voltage coupling during with said current audio signals input of said changing voltage to be measured,
If it is qualified that then said wiring board detects.
2. the method for claim 1 is characterized in that, saidly presets the picture point set that is obtained when the picture point scope is exported same said tableaux by some reference video signals and confirms.
3. method as claimed in claim 2 is characterized in that, the said picture point scope that presets is by the set of said picture point and preset the error permissible range and confirm jointly.
4. 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 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 said IC chip whether the voltage said to be measured that obtains is qualified;
The Video Detection module; Be used for obtaining said voltage to be measured when qualified when said voltage detection module detects; The picture point to be measured of the tableaux that obtains is exported in acquisition by said current video signal; And judge whether said picture point to be measured is presetting within the picture point scope, to indicate said current video signal output whether qualified;
The audio detection module; Be used for presetting within the picture point scope said when said Video Detection module detection obtains said picture point to be measured; To indicate said current video signal to export when qualified, obtain the changing voltage to be measured that said current audio signals output obtains, and judge the whether fixed voltage coupling during with said current audio signals input of said changing voltage to be measured; If it is qualified then to indicate said wiring board to detect.
5. device as claimed in claim 4 is characterized in that, saidly presets the picture point set that is obtained when the picture point scope is exported same said tableaux by some reference video signals and confirms.
6. device as claimed in claim 5 is characterized in that, the said picture point scope that presets is by the set of said picture point and preset the error permissible range and confirm jointly.
7. device as claimed in claim 4; It is characterized in that; Said voltage detection module comprises an AD mouth that is used to obtain said voltage to be measured; Said Video Detection module comprises the video decoding chip that is used to obtain said picture point to be measured, and said audio detection module comprises the 2nd AD mouth that is used to obtain said changing voltage to be measured.
CN2010103008257A 2010-01-27 2010-01-27 Circuit board detection method and device Expired - Fee Related CN101742359B (en)

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

Publications (2)

Publication Number Publication Date
CN101742359A CN101742359A (en) 2010-06-16
CN101742359B true CN101742359B (en) 2012-05-16

Family

ID=42465118

Family Applications (1)

Application Number Title Priority Date Filing Date
CN2010103008257A Expired - Fee Related CN101742359B (en) 2010-01-27 2010-01-27 Circuit board detection method and device

Country Status (1)

Country Link
CN (1) CN101742359B (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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
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

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869685A2 (en) * 1997-04-04 1998-10-07 Tektronix, Inc. Automatic measurement of subjective video quality
CN101184241A (en) * 2007-12-03 2008-05-21 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

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0869685A2 (en) * 1997-04-04 1998-10-07 Tektronix, Inc. Automatic measurement of subjective video quality
CN101184241A (en) * 2007-12-03 2008-05-21 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

Also Published As

Publication number Publication date
CN101742359A (en) 2010-06-16

Similar Documents

Publication Publication Date Title
CN103777131B (en) Integrated circuit test system and method for testing
CN101344566B (en) Test device and method for detecting winding deformation of power transformer
CN103472347A (en) Auxiliary testing circuit, chip with auxiliary testing circuit and circuit board with auxiliary testing circuit
CN102967817B (en) Chip audio module test system and method for testing
CN106526456B (en) Integrated circuit on-line testing device and testing method
US20080294943A1 (en) Sata interface tester and testing method
CN103267940A (en) Multi-module parallel test system and multi-module parallel test method
CN101742359B (en) Circuit board detection method and device
CN101661078A (en) Circuit board and testing device thereof
CN201765291U (en) Tester using electromagnetic induction principle to look for short circuit point position
US20160370428A1 (en) Portable test apparatus for a semiconductor apparatus, and test method using the same
US20120280696A1 (en) Test chip and chip test system using the same
CN103472404A (en) Grounding detection circuit
US20130234742A1 (en) Integrated circuit and printed circuit board having receiver testing function
US20120217977A1 (en) Test apparatus for pci-e signals
CN103605099B (en) Interface conversion pick-up unit and interface detection method
CN101897094B (en) Fault direction determination
CN202583376U (en) I/O detection system of FPGA development board
CN111707966A (en) CPLD electric leakage detection method and device
CN202471858U (en) Automatic test system
US8773932B2 (en) Built-in self-test circuit applied to high speed I/O port
JP5725057B2 (en) Interface board
CN201319063Y (en) Detecting and analyzing device of relay protection testing device
CN204439793U (en) Radio-frequency (RF) switch proving installation
CN103592597B (en) The mutual detecting method of fault of a kind of voltage linear buffer circuit and voltage comparator circuit

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C14 Grant of patent or utility model
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20120516

Termination date: 20160127

EXPY Termination of patent right or utility model