CN101149889B - Display signal detecting device and method - Google Patents
Display signal detecting device and method Download PDFInfo
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- CN101149889B CN101149889B CN200610096116A CN200610096116A CN101149889B CN 101149889 B CN101149889 B CN 101149889B CN 200610096116 A CN200610096116 A CN 200610096116A CN 200610096116 A CN200610096116 A CN 200610096116A CN 101149889 B CN101149889 B CN 101149889B
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- 238000000034 method Methods 0.000 title description 4
- 230000005540 biological transmission Effects 0.000 claims abstract description 76
- 238000001514 detection method Methods 0.000 claims abstract description 14
- 230000002159 abnormal effect Effects 0.000 claims abstract description 7
- 238000012544 monitoring process Methods 0.000 claims abstract description 4
- 238000012546 transfer Methods 0.000 claims description 34
- 230000000052 comparative effect Effects 0.000 claims description 11
- 230000005856 abnormality Effects 0.000 claims description 7
- 238000012360 testing method Methods 0.000 claims description 4
- 230000003139 buffering effect Effects 0.000 abstract 4
- 230000001960 triggered effect Effects 0.000 description 5
- 230000008878 coupling Effects 0.000 description 3
- 238000010168 coupling process Methods 0.000 description 3
- 238000005859 coupling reaction Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
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Abstract
The display-signal detection device comprises a first connector for receiving the voltage, clock and data transmission signals between a main board and a display. The first connector is coupled with a buffering mould and a voltage comparator, in which, the buffering mould is used for receiving clock and data transmission signals and buffering the signals, the voltage comparator is used for receiving voltage transmission signals and comparing the signals to obtain the result. The buffering mould and the voltage comparator is respectively coupled with a programmable logic device for monitoring whether there is abnormal output signals, if 'yes', corresponding lead digit is taken, if 'not', a pre-set code is displayed. The logic device is couple with a displaying mould to receive and display the lead digit or pre-set code where the abnormal output signal occurs. Advantage: solved overlabor work of hand signal-detecting in display-signal detecting device.
Description
[Ji Intraoperative field]
The present invention is a kind of shows signal pick-up unit and shows signal detection method, particularly a kind of shows signal pick-up unit simple to operate and shows signal detection method.
[Bei Jing Ji Intraoperative]
Because we when the mainboard of the hand held equipment unusual to Presentation Function is analyzed, need manually detect tens signals on its LCD interface with multimeter or oscillograph at ordinary times one by one, and are very loaded down with trivial details, waste time and energy.
[summary of the invention]
Fundamental purpose of the present invention is to provide a kind of shows signal pick-up unit simple to operate and shows signal detection method.
For reaching above-mentioned purpose, the invention provides a kind of shows signal pick-up unit, be applicable to the mainboard of detection one handheld device and the associated transport signal between the display, wherein, this mainboard is provided with a Port, the corresponding transmission signals of a pin figure place of Port; And this device comprises one first connector, this Port that is coupled, and it is in order to receive voltage, clock and the data transfer signal between mainboard and the display; This first connector be coupled a buffer module and a voltage comparator, wherein, this buffer module is carried out buffered in order to receive clock and data transfer signal and to it; And this voltage comparator is in order to receiving the voltage transmission signal, and it made comparisons obtain the voltage comparative result after handling; This buffer module and this voltage comparator programmable logic device that all is coupled, whether this programmable logic device is normal in order to monitoring clock transfer signal, data transfer signal and voltage comparative result, and when having unusual transmission signals to exist, obtain the pin figure place at unusual transmission signals place; And when no abnormal transmission signals, show and preset code; This programmable logic device display module that is coupled, this display module is in order to receive and the pin figure place at display abnormality transmission signals place or preset code.
The present invention also provides a kind of shows signal detection method, this method by above-mentioned shows signal pick-up unit to reach, and this method may further comprise the steps: first connector receives mainboard and the voltage between the display, clock and the data transfer signal of handheld device, and export clock and data transfer signal to buffer module, and export the voltage transmission signal to voltage comparator; Buffer module is made buffered with clock and data transfer signal, and exports programmable logic device to; Voltage comparator is made comparisons to the voltage transmission signal and is handled obtaining the voltage comparative result, and exports programmable logic device to; Programmable logic device is monitored clock transfer signal, data transfer signal and voltage comparative result; Programmable logic device has judged whether unusual transmission signals; When programmable logic device has monitored unusual transmission signals when existing, programmable logic device is obtained the pin figure place at unusual transmission signals place, and programmable logic device can export the pin figure place at unusual transmission signals place to display module; Display module receives the also pin figure place at display abnormality transmission signals place.
Xiang is in Xian You Ji Intraoperative, and shows signal pick-up unit of the present invention and shows signal detection method have solved the loaded down with trivial details work of manual detection signal.
[description of drawings]
Fig. 1 is the functional-block diagram of shows signal pick-up unit of the present invention.
Fig. 2 is the process flow diagram of shows signal detection method of the present invention.
[embodiment]
See also shown in 1, shows signal pick-up unit 200 of the present invention is applicable to that (figure does not show the mainboard 11 that detects a handheld device 100 with display, LCD for example) the associated transport signal between, and the transmission signals between mainboard 11 and the display is to export on the display by a Port 110 set on this mainboard 11, wherein, one transmission signals is to a pin figure place that should Port 110, in present embodiment, the transmission signals signal that can be divided three classes, that is, be respectively voltage (voltage) transmission signals, clock (clock) transmission signals and data (data) transmission signals.
Wherein, this shows signal pick-up unit 200 comprises one first connector 21, and this first connector 21 is by cable 300 these Ports 110 of coupling, and this first connector 21 is in order to receive all transmission signals that this Port 110 transmits.And this first connector 21 coupling one buffer module 231 and voltage comparators 232, wherein, this buffer module 231 is in order to carry out buffered to receive clock transmission signals and data transfer signal and to received clock transfer signal and data transfer signal.And voltage comparator 232 is in order to receiving the voltage transmission signal, and to the voltage transmission signal carry out voltage ratio after output voltage comparative result again.And this buffer module 231 and voltage comparator 232 programmable logic device 233 that all is coupled, whether this programmable logic device 233 is normal in order to monitor all transmission signals, and when having unusual transmission signals to exist, obtains the pin figure place at unusual transmission signals place; And when no abnormal transmission signals, show and preset code (the pin figure place that is different from Port 110).And this programmable logic device 233 couplings one display module 24, this display module 24 is in order to receive and the pin figure place at display abnormality transmission signals place or preset code, and in present embodiment, this display module 24 comprises two seven segment code light emitting diodes.
In addition, this shows signal pick-up unit 200 comprises that also one switches switch 25, a zero clearing button 26 and a redirect button 27, wherein, change-over switch 25 is according to the user mode of handheld device 100 test mode with display switching signal pick-up unit 200, that is, and and when handheld device 100 is under the normal boot-strap state, in the time of change-over switch 25 should being switched to S1 place, position, 200 pairs of voltages of shows signal pick-up unit this moment, control signal detects, and the RGB tricolor signal is done preliminary test; And after handheld device 100 enters the special test program, change-over switch 25 should be switched to S2 place, position, 200 pairs of RGB tricolor signal of shows signal pick-up unit this moment are done detailed test; And zero clearing button 26 is used for programmable logic device 233 zero clearings; And redirect button 27 is in order to the pin figure place redirect that display module 24 is shown, for example, when several transmission signals are arranged simultaneously is unusual, display module 24 at first is presented at the high or minimum pin figure place of pin figure place in all unusual transmission signals, then, after redirect button 27 is triggered, show the pin figure place of all unusual transmission signals successively by pin position order.
In addition, this shows signal pick-up unit 200 also comprises one second connector 28, one the 3rd connector 29, one the 4th connector 30 and one the 5th connector 31, and wherein, this second connector 28 is in order to an external display device (figure does not show); The 3rd connector 29 is in order to an external data collecting card (figure does not show); The 4th connector 30 is a programmable device connector; The 5th connector 31 is in order to an external external power source (figure does not show).
By way of example, comprise 21 transmission signals between mainboard 11 and the display altogether, and the pin figure place of these 21 transmission signals correspondences is respectively 01-21, wherein the transmission signals of pin figure place 01-05 is the voltage transmission signal, the transmission signals of pin figure place 06-12 is the clock transfer signal, the transmission signals of pin figure place 13-21 is a data transfer signal. if find that through the monitoring back pin figure place is 02,05, when 13 transmission signals is unusual transmission signals, then by display module 24 pin figure place at display abnormality transmission signals place successively under the redirect effect of redirect button 27, can be arranged to the ascending order display mode, show that at first the pin figure place is 02 transmission signals, then, after redirect button 27 is triggered once, show that the pin figure place is 05 transmission signals, at last, after redirect button 27 is triggered once more, show that the pin figure place is 13 transmission signals; Also can be arranged to the descending display mode, show that at first the pin figure place is 13 transmission signals, then, after redirect button 27 is triggered once, show that the pin figure place is 05 transmission signals, last, after redirect button 27 is triggered once more, show that the pin figure place is 02 transmission signals.
Please in conjunction with consulting Figure 1 and Figure 2, to reach, it may further comprise the steps the shows signal detection method by shows signal pick-up unit 200 shown in Figure 1:
Step 501: first connector 21 receives mainboard 11 and all transmission signals between the display (comprising voltage transmission signal, clock transfer signal and data transfer signal) of handheld device 100, and export clock transfer signal and data transfer signal to buffer module 231, and export the voltage transmission signal to voltage comparator 232;
Step 502: buffer module 231 is made buffered with clock transfer signal and data transfer signal;
Step 503: the processing of making comparisons of 232 pairs of voltage transmission signals of voltage comparator, and obtain the voltage comparative result;
Step 504: 233 pairs of clock transfer signals of programmable logic device, data transfer signal and voltage comparative result are monitored;
Step 505: programmable logic device 233 has judged whether unusual transmission signals; And when having unusual transmission signals to exist, enter step 506; And when no abnormal transmission signals, enter step 508;
Step 506: programmable logic device 233 is obtained the pin figure place at unusual transmission signals place, and programmable logic device 233 can export the pin figure place at unusual transmission signals place to display module 24;
Step 507: display module 24 receives the also pin figure place at display abnormality transmission signals place;
Step 508: display module 24 receives and shows and presets code.
Claims (11)
1. a shows signal pick-up unit is applicable to the mainboard of detection one handheld device and the associated transport signal between the display, and wherein, this mainboard is provided with a Port, the corresponding transmission signals of a pin figure place of Port; It is characterized in that comprising:
One first connector, this Port that is coupled, it is in order to receive voltage transmission signal, clock transfer signal and the data transfer signal between mainboard and the display;
One buffer module, this first connector that is coupled, it carries out buffered in order to receive clock transmission signals and data transfer signal and to it;
One voltage comparator, this first connector that is coupled, it is in order to receiving the voltage transmission signal, and it is made comparisons obtain the voltage comparative result after handling;
One programmable logic device, be coupled this buffer module and voltage comparator, whether it is normal in order to monitoring clock transfer signal, data transfer signal and voltage comparative result, and when having unusual transmission signals to exist, obtains the pin figure place at unusual transmission signals place; And when no abnormal transmission signals, show and preset code;
One display module, this programmable logic device that is coupled, it is in order to receive and the pin figure place at display abnormality transmission signals place or preset code.
2. shows signal pick-up unit according to claim 1 is characterized in that: this display module comprises two seven segment code light emitting diodes.
3. shows signal pick-up unit according to claim 1 is characterized in that: this shows signal pick-up unit comprises that further one switches switch, and it is in order to according to the user mode of the handheld device test mode with the display switching signal pick-up unit.
4. shows signal pick-up unit according to claim 1 is characterized in that: this shows signal pick-up unit further comprises a zero clearing button, and it is used for the programmable logic device zero clearing.
5. shows signal pick-up unit according to claim 1 is characterized in that: this shows signal pick-up unit further comprises a redirect button, and it is in order to the pin figure place redirect that display module is shown.
6. shows signal pick-up unit according to claim 1 is characterized in that: this shows signal pick-up unit further comprises one second connector, and this second connector is in order to an external display device.
7. shows signal pick-up unit according to claim 1 is characterized in that: this shows signal pick-up unit further comprises one the 3rd connector, and the 3rd connector is in order to an external data collecting card.
8. shows signal pick-up unit according to claim 1 is characterized in that: this shows signal pick-up unit further comprises one the 4th connector, and the 4th connector is a programmable device connector.
9. shows signal pick-up unit according to claim 1 is characterized in that: this shows signal pick-up unit further comprises one the 5th connector, and the 5th connector is in order to an external external power source.
10. shows signal detection method that detects by the described shows signal pick-up unit of claim 1 is characterized in that may further comprise the steps:
First connector receives mainboard and the voltage transmission signal between the display, clock transfer signal and the data transfer signal of handheld device, and exports clock and data transfer signal to buffer module, and exports the voltage transmission signal to voltage comparator;
Buffer module is made buffered with clock transfer signal and data transfer signal, and exports programmable logic device to;
Voltage comparator is made comparisons to the voltage transmission signal and is handled obtaining the voltage comparative result, and exports programmable logic device to;
Programmable logic device is monitored clock transfer signal, data transfer signal and voltage comparative result;
Programmable logic device has judged whether unusual transmission signals;
When programmable logic device has monitored unusual transmission signals when existing, programmable logic device is obtained the pin figure place at unusual transmission signals place, and programmable logic device can export the pin figure place at unusual transmission signals place to display module;
Display module receives the also pin figure place at display abnormality transmission signals place.
11. shows signal detection method according to claim 10 is characterized in that: when programmable logic device monitored no abnormal transmission signals, display module received and shows and presets code.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610096116A CN101149889B (en) | 2006-09-18 | 2006-09-18 | Display signal detecting device and method |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200610096116A CN101149889B (en) | 2006-09-18 | 2006-09-18 | Display signal detecting device and method |
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| CN101149889A CN101149889A (en) | 2008-03-26 |
| CN101149889B true CN101149889B (en) | 2010-05-12 |
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| CN200610096116A Expired - Fee Related CN101149889B (en) | 2006-09-18 | 2006-09-18 | Display signal detecting device and method |
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Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101738534B (en) * | 2008-11-24 | 2013-07-31 | 名硕电脑(苏州)有限公司 | Voltage test device and voltage test method |
| CN102843575A (en) * | 2011-06-22 | 2012-12-26 | 鸿富锦精密工业（深圳）有限公司 | VGA (Video Graphics Array) port test device and test method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5870409A (en) * | 1996-06-28 | 1999-02-09 | Microchip Technology Incorporated | Method and apparatus for testing a relatively slow speed component of an intergrated circuit having mixed slow speed and high speed components |
| CN1536544A (en) * | 2003-04-03 | 2004-10-13 | ������������ʽ���� | Image display and drive circuit device of light emitting diode and fault detection method |
| CN1542459A (en) * | 2003-05-01 | 2004-11-03 | 中兴通讯股份有限公司 | An integrated circuit boundary scan testing device |
| CN1667682A (en) * | 2004-03-12 | 2005-09-14 | 东北先锋电子股份有限公司 | Self light emitting display module, electronic equipment into which the same module is loaded, and inspection method of a defect state in the same module |
| JP2006119225A (en) * | 2004-10-19 | 2006-05-11 | Rohm Co Ltd | Voltage controller and display device |
-
2006
- 2006-09-18 CN CN200610096116A patent/CN101149889B/en not_active Expired - Fee Related
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5870409A (en) * | 1996-06-28 | 1999-02-09 | Microchip Technology Incorporated | Method and apparatus for testing a relatively slow speed component of an intergrated circuit having mixed slow speed and high speed components |
| CN1536544A (en) * | 2003-04-03 | 2004-10-13 | ������������ʽ���� | Image display and drive circuit device of light emitting diode and fault detection method |
| CN1542459A (en) * | 2003-05-01 | 2004-11-03 | 中兴通讯股份有限公司 | An integrated circuit boundary scan testing device |
| CN1667682A (en) * | 2004-03-12 | 2005-09-14 | 东北先锋电子股份有限公司 | Self light emitting display module, electronic equipment into which the same module is loaded, and inspection method of a defect state in the same module |
| JP2006119225A (en) * | 2004-10-19 | 2006-05-11 | Rohm Co Ltd | Voltage controller and display device |
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