CN105467262A - Method and device for detection of connection error of display equipment terminal - Google Patents
Method and device for detection of connection error of display equipment terminal Download PDFInfo
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- CN105467262A CN105467262A CN201510990935.3A CN201510990935A CN105467262A CN 105467262 A CN105467262 A CN 105467262A CN 201510990935 A CN201510990935 A CN 201510990935A CN 105467262 A CN105467262 A CN 105467262A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
Abstract
The invention relates to a method and device for detection of a connection error of a display equipment terminal. The method and device are used to detect an output terminal of display equipment, wherein a switch circuit connected to an output circuit of the display equipment is disconnected before the detection, and the disconnected state of the switch circuit is maintained when it is detected that the output terminal of the display equipment is connected to another equipment terminal and that signals are input from the another equipment terminal into the output terminal of the display equipment, so that data cannot be transmitted between the display equipment and the other equipment, and a connection error alarm of the display equipment terminal is sent out. When the display equipment and the other equipment are used in cooperation, the equipment terminals of the two types of equipment may be mutually connected in a wrong way, so that a user cannot know own wrong operation behaviors except for confirming a silk-screen text on the equipment, and a non-professional user even cannot identify a connotation of the silk-screen text. At this moment, the method and device provided by the invention can provide hints or cautions for the user, so that the user can be reminded of the wrong connection, and influences caused by the wrong connection between the display equipment and the other equipment can be avoided.
Description
Technical field
The present invention relates to display technical field of electronic equipment, particularly relate to detection method and the device of display device terminal connection error.
Background technology
Fool-proof design is a kind of behavior restraint means of preventing to correct, and uses the method for limiting avoiding producing mistake, allows operator not need cost notice, also not need experience and professional knowledge accurately can complete correct operation.Broadly, fool proof is exactly how to design a thing, and the degree that the chance that mistake is occurred minimizes.Current, display device possesses lead-out terminal and input terminal usually, because general lead-out terminal is (as VGAout, HDMIout, DPout, DVIout etc.) during fabrication established standards without fool-proof design measure, so user is when use one has the display device of display translation terminal and display input terminal simultaneously, there is larger probability the lead-out terminal of other equipment can be connected with the lead-out terminal mistake of this display device, thus the connection of display device and other equipment is made a mistake, affect display device and run normally.
Summary of the invention
Based on this, be necessary to make a mistake the problem be connected with the lead-out terminal of other equipment for display device, a kind of detection method and device of display device terminal connection error are provided.
A detection method for display device terminal connection error, comprises the following steps:
Whether the lead-out terminal of detection display equipment is connected with other arrangement terminal, and wherein, the on-off circuit in the outlet line of access display device is off state, and outlet line is connected with lead-out terminal;
If detect, lead-out terminal is connected with other arrangement terminal, then whether detect other arrangement terminal has signal to be input to lead-out terminal;
If detect, other arrangement terminal have signal to be input to lead-out terminal, then maintained switch circuit is off state, and send the warning of lead-out terminal connection error.
Wherein in an embodiment, further comprising the steps of after the step whether lead-out terminal of detection display equipment is connected with other arrangement terminal:
If detect, lead-out terminal is not connected with other arrangement terminal, then maintained switch circuit is off state.
Wherein in an embodiment, detect other arrangement terminal whether have signal be input to the step of lead-out terminal after further comprising the steps of:
If detect, other arrangement terminal do not have signal to be input to lead-out terminal, then gauge tap circuit is closure state.
Wherein in an embodiment, the step whether lead-out terminal of detection display equipment is connected with other arrangement terminal comprises the following steps:
Detect first in lead-out terminal and detect whether pin is low level, if the first detection pin is low level, then judge that lead-out terminal is connected with other arrangement terminal, wherein, first detects pin is connected with power supply by the first resistance.
Wherein in an embodiment, the step whether detect other arrangement terminal has signal to be input to lead-out terminal comprises the following steps:
Detect second in lead-out terminal and detect whether pin is high level, if the second detection pin is high level, then judge that other arrangement terminal have signal to be input to lead-out terminal, wherein, second detects pin by the second resistance eutral grounding, and second detects pin is also connected with outlet line.
Wherein in an embodiment, the step sending the warning of lead-out terminal connection error comprises the following steps:
The loudspeaker or the hummer that control display device send connection error prompt tone, or the pilot lamp controlling display device is glittering, or control the display screen display warning picture of display device.
According to the scheme of the detection method of the display device terminal connection error of the invention described above, it mainly detects the lead-out terminal of display device, before detection, on-off circuit in the outlet line of access display device is off state, detecting that the lead-out terminal of display device is connected with other arrangement terminal, and when detecting that other arrangement terminal have signal to be input to the lead-out terminal of display device, maintained switch circuit is off state, make cannot carry out data transmission between display device and other equipment, and send display device connecting terminals wrong false alarm.Display device and other equipment with the use of time, both arrangement terminal may mutually between incorrect link, except the word silk-screen on confirmation equipment, user cannot learn oneself maloperation behavior, unprofessional user even cannot tell silk-screen implication, now use the present invention to provide prompting or warning to user, reminding user connection error, avoid the impact that the incorrect link of display device and other equipment causes.
A pick-up unit for display device terminal connection error, comprises the on-off circuit in the outlet line of control chip and access display device; Wherein, control chip detects first in the lead-out terminal of pin and display device respectively and detects pin and be connected with second in the lead-out terminal of on-off circuit, display device, outlet line and second detects pin and is connected, second detects pin ground connection, first detects pin is also connected with power supply, and on-off circuit is off state;
Control chip detects first and detects whether pin is low level, if the first detection pin is low level, then detects second and detect whether pin is high level, if the second detection pin is high level, then maintained switch circuit is off state, and sends the warning of lead-out terminal connection error.
Wherein in an embodiment, control chip is when detecting that the first detection pin is high level, and maintained switch circuit is off state.
Wherein in an embodiment, control chip detect the first detection pin be low level and second detect pin be low level time, gauge tap circuit is closure state.
Point out a display device for terminal connection error, comprise pick-up unit and the display device of display device terminal connection error.
According to the scheme of the pick-up unit of the display device terminal connection error of the invention described above, it mainly detects pin by control chip to the first detection pin and second in the lead-out terminal of display device and detects, before detection, on-off circuit in the outlet line of access display device is off state, detecting that the first detection pin is low level, and when the second detection pin is high level, maintained switch circuit is off state, make cannot carry out data transmission between display device and other equipment, and send display device connecting terminals wrong false alarm.Display device and other equipment with the use of time, both arrangement terminal may mutually between incorrect link, except the word silk-screen on confirmation equipment, user cannot learn oneself maloperation behavior, unprofessional user even cannot tell silk-screen implication, now use the present invention to provide prompting or warning to user, reminding user connection error, avoid the impact that the incorrect link of display device and other equipment causes.
Accompanying drawing explanation
Fig. 1 is the schematic flow sheet of the detection method of display device terminal connection error in one of them embodiment;
Fig. 2 is the structural representation of the detection method application apparatus of display device VGAout terminal connection error in one of them embodiment;
Fig. 3 is the structural representation of the pick-up unit of display device terminal connection error in one of them embodiment;
Fig. 4 is the structural representation of the pick-up unit of display device terminal connection error in one of them embodiment.
Embodiment
For making object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the present invention is described in further detail.Should be appreciated that embodiment described herein only in order to explain the present invention, do not limit protection scope of the present invention.
Shown in Figure 1, be the embodiment of the detection method of display device terminal connection error of the present invention.The detection method of the display device terminal connection error in this embodiment comprises the steps:
Step S101: whether the lead-out terminal of detection display equipment is connected with other arrangement terminal, wherein, the on-off circuit in the outlet line of access display device is off state, and outlet line is connected with lead-out terminal;
Step S102: lead-out terminal is connected with other arrangement terminal if detect, then whether detect other arrangement terminal has signal to be input to lead-out terminal;
Step S103: other arrangement terminal have signal to be input to lead-out terminal if detect, then maintained switch circuit is off state, and send the warning of lead-out terminal connection error.
In this step, if detect, other arrangement terminal have signal to be input to lead-out terminal, just represent the lead-out terminal of other equipment and the lead-out terminal incorrect link of this display device, the on-off circuit in the outlet line of access display device is now kept to be off state, the output signal of display device would not export from lead-out terminal, avoids carrying out data transmission with other equipment; In addition, maintained switch circuit is only needed to disconnect, without the need to carrying out action to on-off circuit.
The detection method of the display device terminal connection error described in the present embodiment, it mainly detects the lead-out terminal of display device, before detection, on-off circuit in the outlet line of access display device is off state, detecting that the lead-out terminal of display device is connected with other arrangement terminal, and when detecting that other arrangement terminal have signal to be input to the lead-out terminal of display device, maintained switch circuit is off state, make cannot carry out data transmission between display device and other equipment, and send display device connecting terminals wrong false alarm.Display device and other equipment with the use of time, both arrangement terminal may mutually between incorrect link, except the word silk-screen on confirmation equipment, user cannot learn oneself maloperation behavior, unprofessional user even cannot tell silk-screen implication, now use the present invention to provide prompting or warning to user, reminding user connection error, avoid the impact that the incorrect link of display device and other equipment causes.
Wherein in an embodiment, further comprising the steps of after the step whether lead-out terminal of detection display equipment is connected with other arrangement terminal:
If detect, lead-out terminal is not connected with other arrangement terminal, then maintained switch circuit is off state.
In the present embodiment, be not connected with other arrangement terminal at lead-out terminal, when namely lead-out terminal does not use, maintained switch circuit disconnects, and guarantees that output signal can not export.
Wherein in an embodiment, detect other arrangement terminal whether have signal be input to the step of lead-out terminal after further comprising the steps of:
If detect, other arrangement terminal do not have signal to be input to lead-out terminal, then gauge tap circuit is closure state.
In the present embodiment, after detecting that lead-out terminal is connected with other arrangement terminal, detect that again other arrangement terminal do not have signal to be input to lead-out terminal, the lead-out terminal of the input terminal and this display device that just represent other equipment is connected, belong to correct connected mode, now closed by the on-off circuit in the outlet line of access display device, the output signal of display device just can export from lead-out terminal, input to other equipment, complete and transmit with the data of other equipment.
Wherein in an embodiment, the step whether lead-out terminal of detection display equipment is connected with other arrangement terminal comprises the following steps:
Detect first in lead-out terminal and detect whether pin is low level, if the first detection pin is low level, then judge that lead-out terminal is connected with other arrangement terminal, wherein, first detects pin is connected with power supply by the first resistance.
It is directly grounded that first of lead-out terminal detects pin in original standard design, but in the present embodiment, first of lead-out terminal detects pin and is not connected with earth polar, but is connected with power supply by the first resistance (pull-up resistor), so the level that first detects pin can be drawn high.Be not connected with other arrangement terminal at lead-out terminal, when namely lead-out terminal does not use, first detects pin keeps high level always; When lead-out terminal is connected with other arrangement terminal, owing to detecting the corresponding pin ground connection that pin is connected in other arrangement terminal with first, first of lead-out terminal is caused to detect pin and other arrangement terminal altogether, first of lead-out terminal detects pin and becomes low level, therefore, detecting that first in lead-out terminal detects pin is low level, and just representative detects that lead-out terminal is connected with other arrangement terminal.
Wherein in an embodiment, the step whether detect other arrangement terminal has signal to be input to lead-out terminal comprises the following steps:
Detect second in lead-out terminal and detect whether pin is high level, if the second detection pin is high level, then judge that other arrangement terminal have signal to be input to lead-out terminal, wherein, second detects pin by the second resistance eutral grounding.
Second of lead-out terminal detects pin and is connected with power supply in original standard design, but in the present embodiment, second of lead-out terminal detects pin and is not connected with power supply, but by the second resistance (pull down resistor) ground connection, so the level that second detects pin can be dragged down.Be not connected with other arrangement terminal at lead-out terminal, when namely lead-out terminal does not use, second detects pin keeps low level always; When lead-out terminal is connected with other arrangement terminal, if other arrangement terminal are the input terminal of other equipment, then the second detection pin still keeps low level; If other arrangement terminal are the lead-out terminal of other equipment, detecting the signal that corresponding pin that pin is connected provides in the lead-out terminal of other equipment with second in the lead-out terminal of display device is high level signal, then display device lead-out terminal second detect pin will become high level, therefore, detecting that second in lead-out terminal detects pin is high level, and just representative detects that other arrangement terminal have signal to be input to lead-out terminal.
Wherein in an embodiment, the step sending the warning of lead-out terminal connection error comprises the following steps:
The loudspeaker or the hummer that control display device send connection error prompt tone, or the pilot lamp controlling display device is glittering, or control the display screen display warning picture of display device.
In the present embodiment, lead-out terminal connection error can be sent by any one or a few in three kinds of modes to report to the police.
In a preferred embodiment, the detection method of display device terminal connection error can be applied to the display device that lead-out terminal is VGAout, and detailed process is as follows:
The detection method of display device connecting terminals mistake needs to use display device, on-off circuit and control chip (unit) three part.The control chip (unit) of all optional scheme for this reason of chip (unit) that as long as display device Circuits System can provide I/O control, on-off circuit can be the circuit of the switching function possessing electronic controllable.
As shown in Figure 2, the C pin of control chip controls on-off circuit and makes it disconnect when not using the VGAout terminal of display device.Original a certain ground GND is defined pin (first detects pin) in the VGAout terminal of display device not to be connected with circuit earth polar GND, be connected with power supply VCC by pull-up resistor R1, this the first detection pin level is drawn high, then be connected to the A end of control chip, control chip detects the level that first detects pin; In the VGAout terminal of display device, a certain VCC definition pin (second detects pin) is not connected with power supply VCC, by pull down resistor R2 ground connection, this the second detection pin level set low, be then connected to the B end of control chip, control chip detects the level that second detects pin.
When the VGAout terminal of display device connects without other external equipments, the A end of control chip detects high level, and B end detects low level, and now C holds gauge tap circuit to be off state;
When the VGAout terminal corresponding with this display device when the VGA terminal of other equipment is connected, due to the first detection pin ground connection of the VGA terminal of other equipment, the VGAout terminal causing this display device corresponding and the VGA terminal of other equipment altogether, so control chip A end can low level be detected.Namely, the A of control chip end detects low level, and the VGAout terminal just representing the VGA terminal of other equipment corresponding with this display device is connected.
After the A end of control chip detects low level, whether detect the B end of control chip, detecting external equipment has 5V to input.Vision signal normally exports all can have a 5V signal to export, and uses as input.Time like this, the B end of control chip can't detect 5V high level, then can judge external unit connect come as VGAin terminal, now control chip holds gauge tap closing of circuit by C, and now display device and external equipment are normal attended operation, and display device and external equipment can normally use;
Time like this, the B end of control chip detects 5V high level, then can judge external equipment connect come for VGAout terminal, now control chip holds original off-state of maintained switch circuit by C, and notifies that display device system is now user misoperation.The method of user misoperation prompting comprise in following three kinds of modes any one or a few:
1. the loudspeaker or the hummer that control display device send maloperation prompt tone;
2. the pilot lamp controlling display device is glittering, prompting user;
3. display reminding warning picture when display screen (display device have) warns user now is on a display screen maloperation.
According to the detection method of above-mentioned display device terminal connection error, the present invention also provides a kind of pick-up unit of display device terminal connection error, and just the embodiment of the pick-up unit of display device terminal connection error of the present invention is described in detail below.
Shown in Figure 3, be the embodiment of the pick-up unit of display device terminal connection error of the present invention.The pick-up unit of the display device terminal connection error in this embodiment comprises control chip 201 and on-off circuit 202, and wherein, on-off circuit 202 accesses in the outlet line of display device, is off state; Control chip 201 detects first in the lead-out terminal of pin and display device respectively and detects pin and be connected with second in the lead-out terminal of on-off circuit 202, display device, outlet line and second detects pin and is connected, second detects pin ground connection, and first detects pin is also connected with power supply;
Whether control chip 201 detects the first detection pin is low level, if the first detection pin is low level, then detects second and detect whether pin is high level, if the second detection pin is high level, then maintained switch circuit 202 is off state, and sends the warning of lead-out terminal connection error.
In the present embodiment, before detection, on-off circuit 202 is off state, if control chip 201 detects that the first detection pin is low level, then represent and detect that lead-out terminal is connected with other arrangement terminal, if detect, the second detection pin is high level, then represent and detect that other arrangement terminal have signal to be input to lead-out terminal, represent the lead-out terminal of other equipment and the lead-out terminal incorrect link of this display device, now maintained switch circuit 202 is off state, and send display device connecting terminals wrong false alarm, the output signal of display device would not export from lead-out terminal, avoid carrying out data transmission with other equipment.Display device and other equipment with the use of time, both arrangement terminal may mutually between incorrect link, except the word silk-screen on confirmation equipment, user cannot learn oneself maloperation behavior, unprofessional user even cannot tell silk-screen implication, now use the present invention to provide prompting or warning to user, reminding user connection error, avoid the impact that the incorrect link of display device and other equipment causes.
Wherein in an embodiment, control chip 201 is when detecting that the first detection pin is high level, and maintained switch circuit 202 is off state.
In the present embodiment, be not connected with other arrangement terminal at lead-out terminal, namely when lead-out terminal does not use, because the first detection pin is connected with power supply, control chip 201 can detect that the first detection pin is high level, and maintained switch circuit 202 is off state, guarantee that output signal can not export.In addition, even if detect that lead-out terminal is connected with other arrangement terminal, and other arrangement terminal have signal to be input to lead-out terminal, and control chip 201 only needs maintained switch circuit 202 to disconnect, without the need to carrying out action to on-off circuit 202.
Wherein in an embodiment, control chip 201 detect the first detection pin be low level and second detect pin be low level time, gauge tap circuit 202 is closure state.
In the present embodiment, control chip 201 is after detecting that the first detection pin is low level, namely detect that lead-out terminal is connected with other arrangement terminal, detect that again the second detection pin is low level, namely other arrangement terminal do not have signal to be input to lead-out terminal, the lead-out terminal of the input terminal and this display device that just represent other equipment is connected, belong to correct connected mode, now gauge tap circuit 202 is closure state, the output signal of display device just can export from lead-out terminal, input to other equipment, complete and transmit with the data of other equipment.
Wherein in an embodiment, as shown in Figure 4, the first detection pin is connected with power supply by the first resistance (pull-up resistor) 203.Concrete level value when the first detection pin can be regulated to be high level by the first resistance 203, thus make control chip 201 more effectively recognition detection first detect the level value of pin.
Wherein in an embodiment, as shown in Figure 4, second pin is detected by the second resistance (pull down resistor) 204 ground connection.Concrete level value when the second detection pin can be regulated to be high level by pull down resistor, thus make control chip 201 more effectively recognition detection second detect the level value of pin.
Wherein in an embodiment, control chip 201 controls the loudspeaker of display device or hummer sends connection error prompt tone, or the pilot lamp controlling display device is glittering, or controls the display screen display warning picture of display device.
In the present embodiment, control chip 201 can send the warning of lead-out terminal connection error by any one or a few in three kinds of modes.
In a preferred embodiment, the pick-up unit of display device terminal connection error can be applied to the display device that lead-out terminal is VGAout, and detailed process is as follows:
The pick-up unit of display device connecting terminals mistake comprises on-off circuit and control chip (unit) two parts.The control chip (unit) of all optional scheme for this reason of chip (unit) that as long as display device Circuits System can provide I/O control, on-off circuit can be the circuit of the switching function possessing electronic controllable.
As shown in Figure 2, the C pin of control chip controls on-off circuit and makes it disconnect when not using the VGAout terminal of display device.Original a certain ground GND is defined pin (first detects pin) in the VGAout terminal of display device not to be connected with circuit earth polar GND, be connected with power supply VCC by pull-up resistor R1, this the first detection pin level is drawn high, then be connected to the A end of control chip, control chip detects the level that first detects pin; In the VGAout terminal of display device, a certain VCC definition pin (second detects pin) is not connected with power supply VCC, by pull down resistor R2 ground connection, this the second detection pin level set low, be then connected to the B end of control chip, control chip detects the level that second detects pin.
When the VGAout terminal of display device connects without other external equipments, the A end of control chip detects high level, and B end detects low level, and now C holds gauge tap circuit to be off state;
When the VGAout terminal corresponding with this display device when the VGA terminal of other equipment is connected, due to the first detection pin ground connection of the VGA terminal of other equipment, the VGAout terminal causing this display device corresponding and the VGA terminal of other equipment altogether, so control chip A end can low level be detected.Namely, the A of control chip end detects low level, and the VGAout terminal just representing the VGA terminal of other equipment corresponding with this display device is connected.
After the A end of control chip detects low level, whether detect the B end of control chip, detecting external equipment has 5V to input.Vision signal normally exports all can have a 5V signal to export, and uses as input.Time like this, the B end of control chip can't detect 5V high level, then can judge external unit connect come as VGAin terminal, now control chip holds gauge tap closing of circuit by C, and now display device and external equipment are normal attended operation, and display device and external equipment can normally use;
Time like this, the B end of control chip detects 5V high level, then can judge external equipment connect come for VGAout terminal, now control chip holds original off-state of maintained switch circuit by C, and notifies that display device system is now user misoperation.The method of user misoperation prompting comprise in following three kinds of modes any one or a few:
1. the loudspeaker or the hummer that control display device send maloperation prompt tone;
2. the pilot lamp controlling display device is glittering, prompting user;
3. display reminding warning picture when display screen (display device have) warns user now is on a display screen maloperation.
The pick-up unit of display device terminal connection error of the present invention and the detection method one_to_one corresponding of display device terminal connection error of the present invention, the technical characteristic of setting forth in the embodiment of the detection method of above-mentioned display device terminal connection error and beneficial effect thereof are all applicable in the embodiment of the pick-up unit of display device terminal connection error.
According to the pick-up unit of above-mentioned display device terminal connection error, the present invention also provides a kind of display device of pointing out terminal connection error, and the display device of this prompting terminal connection error comprises the pick-up unit of any one display device terminal connection error in the various embodiments described above and corresponding display device.
Each technical characteristic of the above embodiment can combine arbitrarily, for making description succinct, the all possible combination of each technical characteristic in above-described embodiment is not all described, but, as long as the combination of these technical characteristics does not exist contradiction, be all considered to be the scope that this instructions is recorded.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but can not therefore be construed as limiting the scope of the patent.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a detection method for display device terminal connection error, is characterized in that, comprises the following steps:
Whether the lead-out terminal of detection display equipment is connected with other arrangement terminal, and wherein, the on-off circuit accessed in the outlet line of described display device is off state, and described outlet line is connected with described lead-out terminal;
If detect, described lead-out terminal is connected with other arrangement terminal described, then whether detect other arrangement terminal described has signal to be input to described lead-out terminal;
If detect, other arrangement terminal described have signal to be input to described lead-out terminal, then keep described on-off circuit to be off state, and send the warning of described lead-out terminal connection error.
2. the detection method of display device terminal connection error according to claim 1, is characterized in that, further comprising the steps of after the step whether lead-out terminal of described detection display equipment is connected with other arrangement terminal:
If detect, described lead-out terminal is not connected with other arrangement terminal described, then keep described on-off circuit to be off state.
3. the detection method of display device terminal connection error according to claim 1, is characterized in that, other arrangement terminal described in described detection whether have signal be input to the step of described lead-out terminal after further comprising the steps of:
If detect, other arrangement terminal described do not have signal to be input to described lead-out terminal, then controlling described on-off circuit is closure state.
4. the detection method of display device terminal connection error according to claim 1, is characterized in that, the step whether lead-out terminal of described detection display equipment is connected with other arrangement terminal comprises the following steps:
Detect first in described lead-out terminal and detect whether pin is low level, if described first detection pin is low level, then judge that described lead-out terminal is connected with other arrangement terminal described, wherein, described first detects pin is connected with power supply by the first resistance.
5. the detection method of display device terminal connection error according to claim 1, it is characterized in that, the step that described in described detection, whether other arrangement terminal have signal to be input to described lead-out terminal comprises the following steps:
Detect second in described lead-out terminal and detect whether pin is high level, if described second detection pin is high level, then judge that other arrangement terminal described have signal to be input to described lead-out terminal, wherein, described second detects pin by the second resistance eutral grounding, and described second detects pin is also connected with described outlet line.
6. the detection method of display device terminal connection error as claimed in any of claims 1 to 5, is characterized in that, described in send described lead-out terminal connection error report to the police step comprise the following steps:
The loudspeaker or the hummer that control described display device send connection error prompt tone, or the pilot lamp controlling described display device is glittering, or control the display screen display warning picture of described display device.
7. a pick-up unit for display device terminal connection error, is characterized in that, comprises the on-off circuit in the outlet line of control chip and access display device; Wherein, described control chip detects first in the lead-out terminal of pin and described display device respectively and detects pin and be connected with second in the lead-out terminal of described on-off circuit, described display device, described outlet line and described second detects pin and is connected, described second detects pin ground connection, described first detects pin is also connected with power supply, and described on-off circuit is off state;
Described control chip detects described first and detects whether pin is low level, if described first detection pin is low level, then detect described second and detect whether pin is high level, if described second detection pin is high level, then keep described on-off circuit to be off state, and send the warning of described lead-out terminal connection error.
8. the pick-up unit of display device terminal connection error according to claim 7, is characterized in that, described first detects pin is connected with power supply by the first resistance, and described second detects pin by the second resistance eutral grounding.
9. the pick-up unit of display device terminal connection error according to claim 7, is characterized in that, described control chip, when detecting that described first detection pin is high level, keeps described on-off circuit to be off state; Described control chip detect described first detect pin be low level and described second detect pin be low level time, controlling described on-off circuit is closure state.
10. point out a display device for terminal connection error, it is characterized in that, comprise as the display device terminal connection error in claim 7 to 9 as described in any one pick-up unit and as described in display device.
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| CN201510990935.3A CN105467262A (en) | 2015-12-23 | 2015-12-23 | Method and device for detection of connection error of display equipment terminal |
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| CN201510990935.3A CN105467262A (en) | 2015-12-23 | 2015-12-23 | Method and device for detection of connection error of display equipment terminal |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107783627A (en) * | 2016-08-25 | 2018-03-09 | 鸿富锦精密工业(武汉)有限公司 | Protection circuit |
| CN111257949A (en) * | 2020-02-25 | 2020-06-09 | 深圳拓邦股份有限公司 | Contact terminal contact detection control circuit and electrical apparatus |
| CN113295956A (en) * | 2021-06-04 | 2021-08-24 | 广州朗国电子科技有限公司 | DP signal source detection circuit, DP signal source detection method and display device |
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