CN201622325U - Keypad testing device and television testing system - Google Patents
Keypad testing device and television testing system Download PDFInfo
- Publication number
- CN201622325U CN201622325U CN2010201383751U CN201020138375U CN201622325U CN 201622325 U CN201622325 U CN 201622325U CN 2010201383751 U CN2010201383751 U CN 2010201383751U CN 201020138375 U CN201020138375 U CN 201020138375U CN 201622325 U CN201622325 U CN 201622325U
- Authority
- CN
- China
- Prior art keywords
- voltage
- keypad
- button
- testing device
- pressed
- 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
Links
Images
Abstract
The utility model discloses a keypad testing device and a television testing system, relating to the technical field of televisions, and solving the technical problem that the existing keypad testing device causes the produced keypad plate to be easy to generate disorder keypad functions. The keypad testing device comprises at least one operational amplifier chip and an indicating module, wherein the operational amplifier chip is connected with the keypad plate provided with at least one keypad, and the indicating module is connected with the operational amplifier chip; when the keypad on the keypad plate is pressed, each pressed keypad outputs corresponding voltage signals by the signal output end of a keypad circuit on the keypad plate; the operational amplifier chip is connected with the signal output end of the keypad circuit, and used for receiving the voltage signals, judges whether the voltage value of the voltage signal is within the valid range corresponding to the pressed keypad, and inputs the judgment result to the indicating module; and the indicating module is used for indicating the judgment result. The utility model is used for improving the keypad testing device.
Description
Technical field
The utility model relates to electronic technology field, the tv test system that is specifically related to a kind of key testing device and is provided with this key testing device.
Background technology
At present, keypad has become on the televisor one of entering apparatus the most commonly used, and operating personnel can be by keypad to various data such as televisor input control orders, thereby realize man-machine interaction.
As shown in Figure 1, in the prior art, usually be provided with a plurality of buttons 2 on the keypad 1, each button 2 all links to each other with key circuit 10 on the keypad 1, after button 2 is pressed, each button 2 that is pressed all can make key circuit 10 conductings, and the signal output part Aout that passes through key circuit 10 on the keypad 1 exports the correspondent voltage signal, the signal output part Aout of key circuit 10 links to each other with the master chip 30 of televisor, if the voltage of this voltage signal is in the button 2 pairing effective ranges that are pressed, the master chip 30 of televisor just can be according to the button 2 defined functions that are pressed, the various operations that pressing keys 2 will realize are finished in control and corresponding various functional modules 40 of button 2 defined functions or function element.
Because the cost of the master chip 30 of televisor and last and corresponding various functional modules 40 of button 2 defined functions or function element is quite high usually, and the interlock circuit on the master chip 30 peripheral circuits plates of televisor is very complicated, the attended operation of keypad 1 with the master chip 30 of televisor not only bothered, and not quick detachable, so common detection to keypad 1 is by the lower key testing device of cost in the prior art.
As shown in Figure 2, when using existing key testing device to test keypad 1, key circuit on the keypad 1 10 is linked to each other with existing key testing device, when the button on the keypad 12 was pressed, whether the key testing device just can be measured the button 2 that is pressed can make key circuit 10 conductings.
The inventor finds that there is following problem at least in prior art in realizing process of the present utility model:
Existing key testing device, when only can the button 2 on keypad 1 as shown in Figure 2 being pressed, measure the button 2 that is pressed and whether can make key circuit 10 conductings, but can't detect which button 2 on the keypad 1 when being pressed, the voltage of the voltage signal of the signal output part Aout output of key circuit 10 is not or not in the effective range, because effective range and this button 2 defined functions of the magnitude of voltage of each button 2 pairing voltage signal are corresponding, if the magnitude of voltage of voltage signal is provided with inaccurate, nor can detect and correct, button 2 parafunctional problems appear in the keypad 1 that can cause producing easily.
The utility model content
The tv test system that the utility model embodiment provides a kind of key testing device and has been provided with this key testing device has solved the technical matters that the keypress function entanglement appears in keypad that existing key testing device can cause producing easily.
For achieving the above object, embodiment of the present utility model adopts following technical scheme:
This key testing device comprises at least one amplifier chip that links to each other with the keypad that is provided with at least one button and the indicating module that links to each other with described amplifier chip, wherein:
When the described button on the described keypad was pressed, the described button of each that is pressed all can be by the signal output part output correspondent voltage signal of the key circuit on the described keypad;
Described amplifier chip links to each other with the signal output part of described key circuit, be used to receive described voltage signal, and whether the magnitude of voltage of judging described voltage signal in the pairing effective scope of the described button that is pressed, and judged result is imported described indicating module;
Described indicating module is used to indicate described judged result.
Further, described amplifier chip comprises at least one judging unit, is equipped with the highest effective voltage input end, minimum effective voltage input end, voltage signal input end, electric energy input end, output terminal and earth terminal as a result on each described judging unit, wherein:
The highest described effective voltage input end links to each other with power module, is used for obtaining from described power module the highest effective voltage of the described button that is pressed, and the highest described effective voltage is imported described judging unit;
Described minimum effective voltage input end links to each other with power module, is used for obtaining from described power module the minimum effective voltage of the described button that is pressed, and described minimum effective voltage is imported described judging unit;
Described voltage signal input end links to each other with the signal output part of described key circuit, is used to receive described voltage signal, and described voltage signal is imported described judging unit;
Described electric energy input end links to each other with power module, is used for obtaining the required electric energy of described judging unit from described power module;
The magnitude of voltage that described judging unit is used to judge each described voltage signal and is imported described indicating module with judged result by described output terminal as a result whether between pairing the highest described effective voltage of the described button that is pressed and described minimum effective voltage;
Described earth terminal ground connection.
Further, the described judged result exported of described output terminal as a result is the high-low level form;
When the magnitude of voltage of described voltage signal, in the time of in the pairing effective scope of the described button that is pressed, described judged result is high level or low level;
When the magnitude of voltage of described voltage signal, in the time of not in the pairing effective scope of the described button that is pressed, described judged result is low level or high level.
Further, described indicating module is luminescent device and/or microphone device, and each described output terminal as a result links to each other with a described indicating module, and described indicating module is indicated described judged result by the mode of luminous or jingle bell.
Further, described indicating module is a light emitting diode.
Further, described amplifier chip also is connected with and draws power supply, described output terminal as a result comprises two output pins as a result, and described indicating module links to each other with one of them described output pin as a result, draws power supply to pass through first resistance on described and links to each other with two described output pins as a result.
Further, described amplifier chip is a voltage comparator.
Further, described amplifier chip is a double-limit comparator.
Further, also be connected with the signal power source circuit on the described voltage signal input end, wherein:
Described signal power source circuit comprises signal power source, electric capacity and divider resistance, and a utmost point of described electric capacity links to each other with described signal power source, another utmost point of described electric capacity and ground connection after the earth terminal of described key circuit is in parallel;
Described divider resistance one end links to each other with described signal power source, and the other end of described divider resistance is connected between the signal output part of described voltage signal input end and described key circuit.
This tv test system comprises the key testing device that the keypad that is provided with at least one button and above-mentioned the utility model embodiment are provided.
Compared with prior art, the utility model provides the arbitrary technical scheme in the technique scheme to have following advantage:
Because when the amplifier chip can receive button and is pressed in the key testing device that provided of the utility model embodiment, the button that is pressed is by the voltage signal of the signal output part output of key circuit, and whether the magnitude of voltage of judging voltage signal is in the pairing effective scope of the button that is pressed, and judged result imported indicating module, and indicating module can be indicated judged result, and then can realize the complete detection to keypress function;
Compare with existing key testing device, the key testing device that present embodiment provided can detect when which button is pressed on the keypad, the voltage of the voltage signal of the signal output part output of key circuit is not or not in the effective range, thereby can in time find in-problem underproof button, and can be in time to in-problem button place under repair, correct, and then when guaranteeing that each button is pressed, the voltage signal of its signal output part output by key circuit is all in the pairing effective scope of the button that is pressed, avoided voltage signal to surmount effective scope and caused parafunction, so solved the technical matters that the keypress function entanglement appears in keypad that existing key testing device can cause producing easily;
Simultaneously, because usually the amplifier chip is than low many of the cost of the master chip of televisor, indicating module with indication judged result effect also can select much to realize than corresponding various functional modules of the defined function of button or function element is simple in structure and cost is also low electron device, so use key testing device that present embodiment provided can reduce the cost of key test system.
Description of drawings
In order to be illustrated more clearly in the utility model embodiment or technical scheme of the prior art, to do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below, apparently, accompanying drawing in describing below only is embodiment more of the present utility model, for those of ordinary skills, under the prerequisite of not paying creative work, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the synoptic diagram of the annexation of the part parts in keypad and the televisor in the prior art;
Fig. 2 is the synoptic diagram of the annexation of keypad and existing key testing device in the prior art;
The synoptic diagram of the key testing device that Fig. 3 is provided for the utility model embodiment and the annexation of keypad;
A circuit diagram of amplifier chip in the key testing device that Fig. 4 is provided for the utility model embodiment;
The annexation synoptic diagram of a plurality of amplifier chips in the key testing device that comprises a plurality of amplifier chips that Fig. 5 is provided for the utility model embodiment;
The circuit diagram of the bleeder circuit that links to each other with the supply voltage output terminal in the key testing device that Fig. 6 is provided for the utility model embodiment;
The circuit diagram of signal power source circuit in the key testing device that Fig. 7 is provided for the utility model embodiment;
The circuit diagram of a kind of embodiment of power module in the key testing device that Fig. 8 is provided for the utility model embodiment.
Embodiment
Below in conjunction with the accompanying drawing among the utility model embodiment, the technical scheme among the utility model embodiment is clearly and completely described, obviously, described embodiment only is the utility model part embodiment, rather than whole embodiment.Based on the embodiment in the utility model, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the utility model protection.
The utility model embodiment provides the tv test system that a kind of cost is low and can more comprehensively detect the key testing device of button and be provided with this key testing device.
As shown in Figure 3 and Figure 4, the key testing device that the utility model embodiment is provided comprises at least one amplifier chip 3 that links to each other with the keypad 1 that is provided with at least one button 2 and the indicating module 4 that links to each other with amplifier chip 3, wherein:
When the button 2 on the keypad 1 was pressed, each button 2 that is pressed all can be by the signal output part Aout output correspondent voltage signal of the key circuit 10 on the keypad 1;
Because when amplifier chip 3 can receive button 2 and is pressed in the key testing device that provided of the utility model embodiment, the button 2 that is pressed is by the voltage signal of the signal output part Aout output of key circuit 10, and whether the magnitude of voltage of judging voltage signal is in the button 2 pairing effective scopes that are pressed, and judged result imported indicating module 4, and indicating module 4 can be indicated judged result, and then can realize the complete detection to keypress function;
Compare with existing key testing device, the key testing device that present embodiment provided can detect when which button 2 is pressed on the keypad 1, the voltage of the voltage signal of the signal output part Aout output of key circuit 10 is not or not in the effective range, thereby can in time find in-problem underproof button 2, and can be in time to in-problem button 2 places under repair, correct, and then when guaranteeing that each button 2 is pressed, the voltage signal of its signal output part Aout output by key circuit 10 is all in the button 2 pairing effective scopes that are pressed, avoided voltage signal to surmount effective scope and caused parafunction, occurred button 2 parafunctional technical matterss easily so solved the keypad 1 that existing key testing device can cause producing;
Simultaneously, because usually amplifier chip 3 is than low many of the cost of the master chip of televisor, indicating module 4 with indication judged result effect also can select much to realize than corresponding various functional modules of button 2 defined functions or function element is simple in structure and cost is also low electron device, so use key testing device that present embodiment provided can also reduce the cost of button 2 test macros.
As shown in Figure 4, amplifier chip 3 comprises at least one judging unit L in the present embodiment, be equipped with the highest effective voltage input end Vh, minimum effective voltage input end V1, voltage signal input end Uin, electric energy input end Vin, output terminal out1, out2 and earth terminal GND as a result on each judging unit L, wherein:
The highest effective voltage input end Vh links to each other with power module Vcc, is used for obtaining from power module Vcc the highest effective voltage of the button 2 that is pressed, and the highest effective voltage is imported judging unit L;
Minimum effective voltage input end V1 links to each other with power module Vcc, is used for obtaining from power module Vcc the minimum effective voltage of the button 2 that is pressed, and with minimum effective voltage input judging unit L;
Voltage signal input end Uin links to each other with the signal output part Aout of key circuit 10, is used to receive voltage signal, and voltage signal is imported judging unit L;
Electric energy input end Vin links to each other with power module Vcc, is used for obtaining the required electric energy of judging unit L from power module Vcc;
The magnitude of voltage that judging unit L is used to judge each voltage signal whether between button 2 the highest pairing effective voltages that are pressed and minimum effective voltage, and with judged result by the indicating module 4 of output terminal out1, out2 input as a result;
Earth terminal GND ground connection.
When an amplifier chip 3 comprises as shown in Figure 4 two judging unit L, amplifier chip 3 can judge two buttons 2 be pressed after the voltage signal exported respectively of the signal output part Aout of key circuit 10 whether in each button 2 pairing effective range.
Be that example is described in more detail with Fig. 4 and Fig. 5 below:
During to the voltage U 1 of the highest effective voltage input end Vh input of one of them judging unit L in the amplifier chip 3 that comprises two judging unit L (being labeled as 2L among the figure) as shown in Figure 4, minimum effective voltage input end V1 input voltage U2, after this judging unit L can judge that a button 2 is pressed, whether the magnitude of voltage of the voltage signal of the signal output part Aout of key circuit 10 output was between U1 and U2;
The highest effective voltage input end Vh of another judging unit L among two judging unit L of voltage U 2 inputs, simultaneously, when the minimum effective voltage input end V1 input voltage U3 of this judging unit L, after this judging unit L can judge that another button 2 is pressed, whether the magnitude of voltage of the voltage signal of the signal output part Aout of key circuit 10 output was between U2 and U3.
Therefore, the number of the button 2 that can detect as required in the present embodiment, the number of judging unit L in the number of amplifier chip 3 and the amplifier chip 3 in selection the utility model embodiment key testing device.
As shown in Figure 5, when an amplifier chip 3 comprises two judging unit L (being labeled as 2L among the figure),, then need 4 amplifier chips 3 just can finish detection at least if the button 2 that needs to detect is 7.At this moment, the effective range of the key testing device voltage signal that can detect has 7 respectively.
In the key testing device shown in Figure 5 because the highest effective voltage input end Vh of the minimum effective voltage input end V1 of one of them judging unit L and adjacent wherein another judging unit L is consistent, so the effective range of the voltage signal that can test is following 7:
U1～U2、U2～U3、U3～U4、U4～U5、U5～U6、U6～U7、U7～0V。
As shown in Figure 8, in the present embodiment power module Vcc comprise plug, stabilivolt N1, supply voltage output end vo ut, capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, the capacitor C 5 that links to each other with plug and the bleeder circuit as shown in Figure 6 that links to each other with supply voltage output end vo ut, wherein:
Electric energy input end Vin links to each other with supply voltage output end vo ut, and the highest effective voltage input end Vh and minimum effective voltage input end V1 link to each other with the voltage output end of output voltage U 1, U2, U3, U4, U5, U6, U7 on the bleeder circuit respectively;
Stabilivolt N1 as shown in Figure 8 comprises two input pin Vin1, Vin2 and two output pin Vout1, Vout2, and a wherein utmost point of capacitor C 1 and capacitor C 2 is connected between input pin Vin1 and the plug, wherein another utmost point ground connection;
A wherein utmost point of capacitor C 3 is connected on the input pin Vin2, wherein another utmost point ground connection;
A wherein utmost point of capacitor C 4 and capacitor C 5 links to each other with output pin Vout1, Vout2 and supply voltage output end vo ut respectively, wherein another utmost point ground connection.
Stabilivolt N1 and capacitor C 1, capacitor C 2, capacitor C 3, capacitor C 4, capacitor C 5 can be converted into the electric energy from the plug input a more stable voltage, and (for example: 3.3V) export from supply voltage output end vo ut the back, thereby guarantee the accuracy that the key testing device detects.Certainly, can also use other mu balanced circuits to replace stabilivolt N1 and coupled a plurality of electric capacity in the present embodiment.
The voltage that power module Vcc is exported all when the function of definition push key 2, is just predesignated.Certainly, the electric energy input end Vin of a plurality of amplifier chips 3 can a shared power module Vcc in the present embodiment, also can be respectively links to each other with different power module Vcc.
In the present embodiment as a result the judged result exported of output terminal out1, out2 be the high-low level form;
When the magnitude of voltage of voltage signal, in the time of in the button 2 pairing effective scopes that are pressed, judged result is high level or low level;
When the magnitude of voltage of voltage signal, in the time of not in the button 2 pairing effective scopes that are pressed, judged result is low level or high level.
Be difficult for loss in the signals transmission of high-low level form, and it is a lot of to discern the electron device of indicating module 4 of signal of high-low level form, the wide range of selecting for use helps to reduce the cost of present embodiment key testing device.
When the magnitude of voltage of voltage signal, in the time of not in the button 2 pairing effective scopes that are pressed, judged result is a low level in the present embodiment, otherwise then judged result is a high level.
Certainly, the judged result exported of output terminal out1, out2 also can be other data layouts outside the high-low level form as a result.
Indicating module 4 is luminescent device and/or microphone device in the present embodiment, each as a result output terminal out1, out2 link to each other with an indicating module 4, indicating module 4 is indicated judged result by the mode of luminous or jingle bell.
No matter be luminous or the mode of jingle bell all can be indicated tester's judged result, be preferably in the present embodiment and adopt luminous mode that because luminous mode can not produce noise pollution, and a plurality of different indicating module 4 also is convenient to differentiate when simultaneously luminous.
Indicating module 4 is light emitting diode VD as shown in Figure 4 and Figure 5.Light emitting diode VD is a kind of luminous electron device with low cost, and power consumption is very low, helps to reduce the cost of the utility model key testing device.
As shown in Figure 4 and Figure 5, amplifier chip 3 also is connected with and draws power supply Vs in the present embodiment, output terminal out1, out2 comprise two output pin Out1, Out2 as a result as a result, indicating module 4 with one of them as a result output pin Out2 link to each other, on draw power supply Vs output pin Out1, Out2 link to each other as a result with two by first resistance R 1.
On draw the main effect of power supply Vs to be: when the output of output terminal out1, out2 as a result high level, be indicating module 4 power supplies, thereby drive indicating module 4 work.When output terminal out1, out2 output low level as a result, on draw the electric current that flows through first resistance R 1 of power supply Vs very little, the electric energy of input indicating module 4 also seldom is not enough to drive indicating module 4 work.
In the present embodiment electric energy input end Vin with on when drawing the required voltage of power supply Vs identical, both can be connected on the supply voltage output end vo ut after the parallel connection simultaneously, ut obtains electric energy from the supply voltage output end vo.
As shown in Figure 7, also be connected with the signal power source circuit on the voltage signal input end Uin in the present embodiment, wherein: the signal power source circuit comprises signal power source Vcd, capacitor C and divider resistance Rcd, one end of capacitor C links to each other with signal power source Vcd, the other end of capacitor C and ground connection after the earth terminal GND of key circuit 10 is in parallel;
Divider resistance Rcd one end links to each other with signal power source Vcd, and the other end of divider resistance Rcd is connected between the signal output part Aout of voltage signal input end Uin and key circuit 10.
When testing the button 2 on the keypad 1, key circuit 10 is linked to each other with voltage signal input end Ui n and signal power source circuit respectively, after button 2 is pressed, feasible key circuit 10 conductings as shown in Figure 3 of button 2 meetings, because different buttons 2 can insert the signal power source circuit with the resistance of different resistances, the resistance of different resistances is understood with divider resistance Rcd dividing potential drop after inserting the signal power source circuit, and then produces the voltage signal with magnitude of voltage.
The tv test system that present embodiment provided comprises being provided with at least one keypad 1 of button 2 and key testing device that above-mentioned the utility model embodiment is provided as shown in Figure 3.
Because the identical technical characterictic of key testing device that is provided with above-mentioned the utility model embodiment is provided in the tv test system that the utility model embodiment is provided, so both not only have unicity, and can produce identical technique effect, solve identical technical matters.
The above; it only is embodiment of the present utility model; but protection domain of the present utility model is not limited thereto; anyly be familiar with those skilled in the art in the technical scope that the utility model discloses; can expect easily changing or replacing, all should be encompassed within the protection domain of the present utility model.Therefore, protection domain of the present utility model should be as the criterion with the protection domain of claim.
Claims (10)
1. key testing device is characterized in that: comprise at least one amplifier chip that links to each other with the keypad that is provided with at least one button and the indicating module that links to each other with described amplifier chip, wherein:
When the described button on the described keypad was pressed, the described button of each that is pressed all can be by the signal output part output correspondent voltage signal of the key circuit on the described keypad;
Described amplifier chip links to each other with the signal output part of described key circuit, be used to receive described voltage signal, and whether the magnitude of voltage of judging described voltage signal in the pairing effective scope of the described button that is pressed, and judged result is imported described indicating module;
Described indicating module is used to indicate described judged result.
2. key testing device according to claim 1, it is characterized in that: described amplifier chip comprises at least one judging unit, be equipped with the highest effective voltage input end, minimum effective voltage input end, voltage signal input end, electric energy input end, output terminal and earth terminal as a result on each described judging unit, wherein:
The highest described effective voltage input end links to each other with power module, is used for obtaining from described power module the highest effective voltage of the described button that is pressed, and the highest described effective voltage is imported described judging unit;
Described minimum effective voltage input end links to each other with power module, is used for obtaining from described power module the minimum effective voltage of the described button that is pressed, and described minimum effective voltage is imported described judging unit;
Described voltage signal input end links to each other with the signal output part of described key circuit, is used to receive described voltage signal, and described voltage signal is imported described judging unit;
Described electric energy input end links to each other with power module, is used for obtaining the required electric energy of described judging unit from described power module;
The magnitude of voltage that described judging unit is used to judge each described voltage signal and is imported described indicating module with judged result by described output terminal as a result whether between pairing the highest described effective voltage of the described button that is pressed and described minimum effective voltage;
Described earth terminal ground connection.
3. key testing device according to claim 2 is characterized in that: the described judged result that described output terminal is as a result exported is the high-low level form;
When the magnitude of voltage of described voltage signal, in the time of in the pairing effective scope of the described button that is pressed, described judged result is high level or low level;
When the magnitude of voltage of described voltage signal, in the time of not in the pairing effective scope of the described button that is pressed, described judged result is low level or high level.
4. key testing device according to claim 3, it is characterized in that: described indicating module is luminescent device and/or microphone device, each described output terminal as a result links to each other with a described indicating module, and described indicating module is indicated described judged result by the mode of luminous or jingle bell.
5. key testing device according to claim 4 is characterized in that: described indicating module is a light emitting diode.
6. key testing device according to claim 5, it is characterized in that: described amplifier chip also is connected with and draws power supply, described output terminal as a result comprises two output pins as a result, described indicating module links to each other with one of them described output pin as a result, draws power supply to pass through first resistance on described and links to each other with two described output pins as a result.
7. key testing device according to claim 3 is characterized in that: described amplifier chip is a voltage comparator.
8. key testing device according to claim 7 is characterized in that: described amplifier chip is a double-limit comparator.
9. key testing device according to claim 3 is characterized in that: also be connected with the signal power source circuit on the described voltage signal input end, wherein:
Described signal power source circuit comprises signal power source, electric capacity and divider resistance, and a utmost point of described electric capacity links to each other with described signal power source, another utmost point of described electric capacity and ground connection after the earth terminal of described key circuit is in parallel;
Described divider resistance one end links to each other with described signal power source, and the other end of described divider resistance is connected between the signal output part of described voltage signal input end and described key circuit.
10. a tv test system is characterized in that: comprise that the keypad and the aforesaid right that are provided with at least one button require 1 to 9 arbitrary described key testing device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201383751U CN201622325U (en) | 2010-03-23 | 2010-03-23 | Keypad testing device and television testing system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201383751U CN201622325U (en) | 2010-03-23 | 2010-03-23 | Keypad testing device and television testing system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201622325U true CN201622325U (en) | 2010-11-03 |
Family
ID=43025783
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201383751U Expired - Fee Related CN201622325U (en) | 2010-03-23 | 2010-03-23 | Keypad testing device and television testing system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201622325U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169149A (en) * | 2010-12-30 | 2011-08-31 | 东莞市长田电子有限公司 | Test circuit of key-press control panel |
| CN102508552A (en) * | 2011-10-31 | 2012-06-20 | 深圳市大富科技股份有限公司 | Method for eliminating jittering of buttons, device and keyboard |
| CN105486940A (en) * | 2014-09-17 | 2016-04-13 | 深圳Tcl数字技术有限公司 | Key detection circuit and key detection method of electronic equipment |
| CN106771753A (en) * | 2016-12-27 | 2017-05-31 | 珠海市捷锐科技有限公司 | Key functional test machine |
| WO2017113615A1 (en) * | 2015-12-31 | 2017-07-06 | 深圳Tcl数字技术有限公司 | Detection apparatus and method for adaptation of terminal to button board |
| CN108398634A (en) * | 2017-02-08 | 2018-08-14 | 佛山市顺德区美的电热电器制造有限公司 | Automatic detection device and automatic testing method |
-
2010
- 2010-03-23 CN CN2010201383751U patent/CN201622325U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102169149A (en) * | 2010-12-30 | 2011-08-31 | 东莞市长田电子有限公司 | Test circuit of key-press control panel |
| CN102508552A (en) * | 2011-10-31 | 2012-06-20 | 深圳市大富科技股份有限公司 | Method for eliminating jittering of buttons, device and keyboard |
| CN102508552B (en) * | 2011-10-31 | 2014-07-30 | 深圳市大富科技股份有限公司 | Method for eliminating jittering of buttons, device and keyboard |
| CN105486940A (en) * | 2014-09-17 | 2016-04-13 | 深圳Tcl数字技术有限公司 | Key detection circuit and key detection method of electronic equipment |
| CN105486940B (en) * | 2014-09-17 | 2018-07-13 | 深圳Tcl数字技术有限公司 | The key press detecting circuit and key detecting method of electronic equipment |
| WO2017113615A1 (en) * | 2015-12-31 | 2017-07-06 | 深圳Tcl数字技术有限公司 | Detection apparatus and method for adaptation of terminal to button board |
| CN106771753A (en) * | 2016-12-27 | 2017-05-31 | 珠海市捷锐科技有限公司 | Key functional test machine |
| CN108398634A (en) * | 2017-02-08 | 2018-08-14 | 佛山市顺德区美的电热电器制造有限公司 | Automatic detection device and automatic testing method |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201622325U (en) | Keypad testing device and television testing system | |
| CN202631671U (en) | PCB testing device | |
| CN103472347A (en) | Auxiliary testing circuit, chip with auxiliary testing circuit and circuit board with auxiliary testing circuit | |
| US8810268B2 (en) | Built-in self-test circuit for liquid crystal display source driver | |
| CN103364709A (en) | Functional circuit test system and method for printed circuit board assembly | |
| CN103777131A (en) | Integrated circuit testing system and integrated circuit testing method | |
| CN108594017A (en) | A kind of bonding impedance detection system and method | |
| CN103379421B (en) | The working state detecting method of digital microphone channel selecting pin and device | |
| CN103248370B (en) | Press keys setup method | |
| CN106291321B (en) | L abWindows/CVI-based plasma power supply circuit automatic test platform and method | |
| CN102624957B (en) | Detection system for earphone drive-by-wire button of mobile phone | |
| CN100384551C (en) | Optical coupling screening device | |
| CN105510796A (en) | Automatic tester applied to smart electric meter production line | |
| CN103995207A (en) | Three-remote automatic test device for power distribution terminal | |
| CN102857231A (en) | Key testing circuit | |
| CN203772995U (en) | Interface short-circuit detector | |
| TWI408390B (en) | Controlling circuit used for analog measure module and controlling module thereof | |
| CN115078797A (en) | Current measuring method and device | |
| CN102135582A (en) | Mainboard tester | |
| CN104459530A (en) | Keying board tester and keying board test device | |
| CN104090168A (en) | Transformer direct-current resistance and no-load voltage ratio testing device | |
| CN111726119B (en) | Key detection circuit and detection method | |
| CN203151680U (en) | Single-board test system for digital-video-broadcasting (DVB) main board | |
| CN202166721U (en) | Function tester for thick film integrated circuit | |
| CN203232092U (en) | PCB voltage test circuit and tool |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101103 Termination date: 20130323 |