CN201616088U - Optical touch device - Google Patents
Optical touch device Download PDFInfo
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- CN201616088U CN201616088U CN2010201319191U CN201020131919U CN201616088U CN 201616088 U CN201616088 U CN 201616088U CN 2010201319191 U CN2010201319191 U CN 2010201319191U CN 201020131919 U CN201020131919 U CN 201020131919U CN 201616088 U CN201616088 U CN 201616088U
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- image sensor
- control apparatus
- optical touch
- touch control
- processing unit
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Abstract
An optical touch device comprises more than one image sensors and a processing unit which is connected with the image sensors. When the optical touch device is in sleep mode, one of the image sensors in sleep mode is actuated so as to detect an indicator in a touch area. When detecting that an indicator is in the touch area, the image sensor informs the processing unit to wake up the whole optical touch device. When the optical touch device is in sleep mode, one of all the image sensors of the optical touch device is actuated to detect an indicator in a touch area so as to decide the time to wake up the whole optical touch device, thereby reducing current loss during the duration of sleep mode of the optical touch device, and further being in compliance with 2.5 mA consumption current.
Description
Technical field
The utility model relates to a kind of mechanism that electronic installation is waken up from sleep state, particularly a kind of optical touch control apparatus.
Background technology
Along with the lifting of overall situation to green energy consciousness, the power saving design has been the consideration of electronic installation indispensability.And, require also to get over strictness for the power consumption stream of electronic installation under power down mode.
" sleep state (sleep mode) " is a kind of power down mode of electronic installation.Under the sleep state of electronic installation, when the user desired to reuse electronic installation, electronic installation can continue full electric operating (usually in the several seconds) apace.
Along with the progress of science and technology, there is increasing electronic installation (for example: computing machine and mobile device etc.) to adopt Touch Screen as using interface.
Touch Screen is the induction type liquid crystal indicator that receives indicant input signals such as (for example: finger or plastics nib etc.) for a kind of.When indicant contacted the graphic button that shows on the Touch Screen, the haptic feedback system of Touch Screen can be according to the application program of the various bindings of driven by program of programming in advance.
In recent years, Touch Screen developed into optical profile type from resistance-type and condenser type.The optical touch screen is to utilize optical sensor to detect the indicant that is in contact with it.
For asking power saving, when optical touch screen a period of time did not operate, the optical touch screen promptly can enter sleep state.When the user desires to reuse, only indicant need be placed on the optical touch screen and the optical touch screen can be waken up (wake up) from sleep state.Yet the optical touch screen can produce the power consumption stream standard that does not meet 2.5mA (milliampere) than big current drain when the detection on the opportunity of waking up.
The utility model content
In view of above problem, fundamental purpose of the present utility model is to provide a kind of optical touch control apparatus, so as to solving that existing in prior technology can produce big current drain when the detection on the opportunity of waking up and the problem of standard is flowed in the power consumption that do not meet 2.5mA (milliampere).
The utility model discloses a kind of optical touch control apparatus and comprises a more than one image sensor and a processing unit.
Wherein, processing unit connects this a little image sensors.
In this, optical touch control apparatus be in dormant during, present the image sensor in dormant these a little image sensors, be detected on a indicant on the touch area to cause the image sensor that activated.
When image sensor detects when having indicant on the touch area, image sensor notifier processes unit is to wake whole optical touch control apparatus up.
Wherein, optical touch control apparatus be in dormant during, activated image sensor and can a first frequency detect indicant.And this first frequency is less than the detection frequency of image sensor under the normal operation state.
Moreover when image sensor detects indicant on the touch area time, image sensor can send a signal and give processing unit, causes processing unit to wake whole optical touch control apparatus up according to the signal that image sensor sent.Optical touch control apparatus be in dormant during, the signal that image sensor sent does not comprise the coordinate information of indicant.
In addition, this optical touch control apparatus can also comprise a timer.In optical touch control apparatus be in dormant during, timer is in order to periodically to activate the image sensor in these a little image sensors, cause the image sensor that activated to detect a indicant on the touch area, so as to waking up opportunity of decision optical touch control apparatus.
Wherein, this timer is arranged in this image sensor of this timer actuating.
Wherein, this timer is arranged at outside this image sensor of this timer actuating.
Moreover image sensor can have a blocking stitch, and this blocking stitch is electrically connected to processing unit.In optical touch control apparatus be in dormant during, when image sensor detects when having indicant on the touch area, image sensor sends an obstruction signal to processing unit via the blocking stitch, causes processing unit to wake whole optical touch control apparatus up according to obstruction signal.
In addition, image sensor can also serial transmission notifier processes unit.
In addition, this image sensor is notified this processing unit via a built-in integrated circuit (I2C) bus.
In addition, image sensor can only detect the regional area of touch area, whether to have indicant on the regional area of judging the touch area.
Wherein, optical touch control apparatus can comprise more than one luminescence component.In this, each image sensor is corresponding to one of in these a little luminescence components.In optical touch control apparatus be in dormant during, image sensor luminescence component pairing with it together activated, and causes the image sensor that activated to be detected on indicant on the touch area according to the light that luminescence component sent of correspondence.
The utility model also provides a kind of optical touch control apparatus, comprise: more than one luminescence component, a more than one image sensor and a processing unit, respectively this image sensor is corresponding to one of in those luminescence components, this processing unit connects those image sensors, it is characterized in that, also comprise a timer, in this optical touch control apparatus be in dormant during, this timer is in order to periodically to activate the image sensor in those image sensors, cause this image sensor that activated to detect a indicant on the touch area, so as to determining waking up opportunity of this optical touch control apparatus.
Wherein, this image sensor has a blocking stitch, this blocking stitch is electrically connected to this processing unit, and in this optical touch control apparatus be in dormant during, when this image sensor detects when having this indicant on this touch area, this image sensor sends an obstruction signal to this processing unit via this blocking stitch, causes this processing unit to wake whole this optical touch control apparatus up according to this obstruction signal.
Effect of the present utility model is, optical touch control apparatus, its be in optical touch control apparatus be in dormant during, one of them image sensor of all image sensors that only is actuated at optical touch control apparatus carries out the detection of indicant, wake the opportunity of whole optical touch control apparatus up with decision, so as to be reduced to optical touch control apparatus be in dormant during the loss of electric current, and then can meet the power consumption stream standard of 2.5mA (milliampere).
Below in conjunction with the drawings and specific embodiments the utility model is described in detail, but not as to qualification of the present utility model.
Description of drawings
Fig. 1 is the synoptic diagram according to the summary structure of the optical touch control apparatus of the utility model first embodiment;
Fig. 2 is the synoptic diagram according to the summary structure of the optical touch control apparatus of the utility model second embodiment;
Fig. 3 is the synoptic diagram according to the summary structure of the optical touch control apparatus of the utility model the 3rd embodiment;
Fig. 4 is the synoptic diagram according to the summary structure of the optical touch control apparatus of the utility model the 4th embodiment;
Fig. 5 is the process flow diagram according to the sleep/wake method of the optical touch control apparatus of the utility model one embodiment;
Fig. 6 shows the sleep/wake method according to optical touch control apparatus of the present utility model, the process flow diagram of the step 510 of an embodiment;
Fig. 7 shows according to optical touch control apparatus of the present utility model, the summary block scheme of the image sensor of first embodiment;
Fig. 8 shows according to optical touch control apparatus of the present utility model, the summary block scheme of the image sensor of second embodiment;
Fig. 9 shows according to optical touch control apparatus of the present utility model, the summary block scheme of the image sensor of the 3rd embodiment;
Figure 10 shows the sleep/wake method according to optical touch control apparatus of the present utility model, the process flow diagram of the step 520 of first embodiment;
Figure 11 shows the sleep/wake method according to optical touch control apparatus of the present utility model, the process flow diagram of the step 520 of second embodiment;
Figure 12 shows the sleep/wake method according to optical touch control apparatus of the present utility model, the process flow diagram of the step 520 of the 3rd embodiment.
Wherein, Reference numeral
100 optical touch control apparatus
102 touch areas
110 image sensors
The 110a image sensor
The 110b image sensor
The 110c image sensor
112 timers
114 blocking stitch
120 luminescence components
The 120a luminescence component
The 120b luminescence component
The 120c luminescence component
130 processing units
140 waveguide assemblies or reflection subassembly
200 display screens
300 indicants
400 I2C buses
Embodiment
Below in conjunction with accompanying drawing structural principle of the present utility model and principle of work are done concrete description:
With reference to Fig. 1, Fig. 2, Fig. 3 and Fig. 4, optical touch control apparatus 100 can be positioned on the display screen 200 (for example: the screen of LCD, the screen of cathode-ray tube display, electronic whiteboard etc.).
Optical touch control apparatus 100 is in order to provide touch area 102.And 102 corner is provided with image sensor (image sensor) 110 and luminescence component 120 in the touch area.Image sensor 110 is electrically connected to a processing unit 130.This handles the running of unit 130 in order to control optical touch control apparatus 100.
Single optical touch control apparatus 100 can be provided with single image sensor 110 (as shown in Figures 1 and 2), and plural image sensor 110a, 110b, 110c (being commonly referred to as 110) (as Fig. 4 and shown in Figure 5) also can be set.Single optical touch control apparatus 100 can be provided with single luminescence component 120 (as shown in Figures 2 and 3), and plural luminescence component 120a, 120b, 120c (being commonly referred to as 120) (as shown in Figures 3 and 4) also can be set.
110 pairs of each image sensors should have a luminescence component 120.The light that image sensor 110 is sent according to pairing luminescence component 120 detects the indicant 300 on the touch area 102.In addition, optical touch control apparatus 100 also can have waveguide assemblies or reflection subassembly 140.Waveguide assemblies or reflection subassembly 140 selectivity are arranged on the periphery of touch area 102.
Please merge with reference to Fig. 5, in optical touch control apparatus 100 be in dormant during, actuating presents the luminescence component 120a (step 510) in the dormant luminescence component 120, sends a light (step 520) to the touch area 102 to cause luminescence component 120a.And, actuating presents the image sensor 110a (step 510) in the dormant image sensor 110, be detected on indicant 300 (step 520) on the touch area 102 with the light that causes image sensor 110a to be sent, so as to judging on the touch area 102 whether have indicant 300 according to pairing luminescence component 120a.In this, but corresponding mutually luminescence component 120a and image sensor 110a synchronous operation promptly activated simultaneously.
When image sensor 110a detects when having indicant 300 on the touch area 102, image sensor 110a sends a signalisation processing unit 130 (step 530), cause processing unit 130 these signals of response and wake whole optical touch control apparatus up, for example: still present dormant image sensor 110, luminescence component 120 and other assembly (step 532).In optical touch control apparatus 100 be in dormant during, the signal that image sensor 110a is sent can not comprise the coordinate information of indicant 300.
When image sensor 110a does not detect when having indicant 300 on the touch area 102, luminescence component 120a and image sensor 110a then enter sleep state (step 540) once more.
With reference to Fig. 6, in step 510, image sensor 110a can periodically activate (step 512), detects indicant 300 (step 520) to cause image sensor 110a with first frequency.Wherein, this first frequency is less than the detection frequency of image sensor 110a under the normal operation state.For instance, in optical touch control apparatus 100 be in the normal operation state during, the detection frequency of image sensor 110a can be per second and detects 240 frames (frame); And in optical touch control apparatus 100 be in dormant during, first frequency then detects 240 frames much smaller than per second, for example: image sensor 110a per second detects 1 or 2 frames.
With reference to Fig. 7 and Fig. 8, optical touch control apparatus 100 can be provided with a timer 112.In optical touch control apparatus 100 be in dormant during, timer 112 can periodically activate corresponding image sensor 110a and be detected on indicant 300 on the touch area 102, so as to waking up opportunity of decision optical touch control apparatus 100.In other words, can utilize the timer 112 of low power consumption periodically to wake image sensor 110a up to carry out the detection of indicant 300.In this, timer 112 can be arranged among its image sensor 110a that wakes up, also can be arranged on outside the image sensor 110a.
Moreover image sensor 110a can design a blocking stitch (interception pin) 114 especially.This blocking stitch 114 is electrically connected to processing unit 130.In optical touch control apparatus 100 be in dormant during, when image sensor 110a detects when having indicant 300 on the touch area 102, image sensor 110a sends an obstruction signal to processing unit 130 via blocking stitch 114, wakes whole optical touch control apparatus 100 to cause processing unit 130 up according to obstruction signal.In other words, when image sensor 110a detects when having indicant 300 on the touch area 102, utilize obstruction signal to wake up and present dormant processing unit 130, and then wake whole optical touch control apparatus 100 up by processing unit 130 again, for example: still present dormant image sensor 110, luminescence component 120 and other assembly.
In addition, in optical touch control apparatus be in dormant during, the image sensor 110a that activated also can communicate by serial transmission and processing unit 130.
For example, with reference to Fig. 9, in optical touch control apparatus be in dormant during, can be by processing unit 130 via I2C (Inter-Integrated Circuit, built-in integrated circuit) bus 400 is regularly sent sense command and is given image sensor 110a, periodically carries out the detection of indicant 300 to cause image sensor 110a.When image sensor detects when having indicant on the touch area, image sensor is also via I2C bus notifier processes unit, to wake whole optical touch control apparatus up.
With reference to Figure 10, in step 520, image sensor 110a can judge whether have indicant 300 (step 522) on the touch area 102 according to the reflected light that receives again by receiving the reflected light (step 521) of the light that is sent corresponding to luminescence component 120a.For instance, when indicant 300 was positioned on the touch area 102, image sensor 110a then can receive the reflected light that indicant 300 reflection rays are produced.
Moreover with reference to Figure 11, in step 520, image sensor 110a can be by detecting the light (step 523) that luminescence component 120a is sent, and judges whether have indicant 300 (step 524) on the touch area 102 according to the light that whether receives again.
In addition, with reference to Figure 12, in step 520, image sensor 110a can only detect the regional area (step 525) of touch area 102, whether to have indicant 300 on the regional area of judging touch area 102.
Sleep/wake method and optical touch control apparatus according to optical touch control apparatus of the present utility model, its be in optical touch control apparatus be in dormant during, all image sensors image sensor wherein that only is actuated at optical touch control apparatus carries out the detection of indicant, wake the opportunity of whole optical touch control apparatus up with decision, so as to be reduced to optical touch control apparatus be in dormant during the loss of electric current, and then can meet the power consumption stream standard of 2.5mA (milliampere).
Certainly; the utility model also can have other various embodiments; under the situation that does not deviate from the utility model spirit and essence thereof; those of ordinary skill in the art work as can make various corresponding changes and distortion according to the utility model, but these corresponding changes and distortion all should belong to the protection domain of the appended claim of the utility model.
Claims (13)
1. an optical touch control apparatus in order to a touch area to be provided, is characterized in that, comprising:
More than one image sensor; And
One processing unit electrically connects those image sensors;
Wherein, in this optical touch control apparatus be in dormant during, an image sensor that presents in dormant those image sensors activated, and causes this image sensor that activated to be detected on a indicant on this touch area; And
Wherein, when this image sensor detects when having this indicant on this touch area, this image sensor notifies this processing unit to wake whole this optical touch control apparatus up.
2. optical touch control apparatus according to claim 1, it is characterized in that, optical touch control apparatus be in dormant during, this image sensor that activated is to detect this indicant with the first frequency less than the detection frequency of image sensor under the normal operation state.
3. optical touch control apparatus according to claim 1, it is characterized in that, also comprise a timer, in this optical touch control apparatus be in dormant during, this timer is in order to periodically to activate this image sensor in those image sensors, cause this image sensor that activated to detect this indicant on this touch area, so as to determining waking up opportunity of this optical touch control apparatus.
4. optical touch control apparatus according to claim 3 is characterized in that, this timer is arranged in this image sensor of this timer actuating.
5. optical touch control apparatus according to claim 3 is characterized in that, this timer is arranged at outside this image sensor of this timer actuating.
6. optical touch control apparatus according to claim 1, it is characterized in that, when this image sensor detects this indicant on this touch area the time, this image sensor sends a signal of the coordinate information that does not comprise this indicant and gives this processing unit, causes this processing unit to wake whole this optical touch control apparatus up according to this signal.
7. optical touch control apparatus according to claim 6 is characterized in that, this image sensor has a blocking stitch, and this blocking stitch is electrically connected to this processing unit, in order to transmit this signal.
8. optical touch control apparatus according to claim 1 is characterized in that, this image sensor is to notify this processing unit with serial transmission.
9. optical touch control apparatus according to claim 8 is characterized in that, this image sensor is notified this processing unit via a built-in integrated circuit bus.
10. optical touch control apparatus according to claim 1, it is characterized in that, in this optical touch control apparatus be in dormant during, this image sensor that activated is the regional area that detects this touch area, whether to have this indicant on this regional area of judging this touch area.
11. optical touch control apparatus according to claim 1 is characterized in that, also comprises:
More than one luminescence component;
Wherein, respectively this image sensor is corresponding to one of in those luminescence components, and in this optical touch control apparatus be in dormant during, this image sensor together activated with corresponding this luminescence component, causes this image sensor of activateding to be detected on this indicant on this touch area according to the light that this luminescence component sent of correspondence.
12. optical touch control apparatus, it is characterized in that, comprise: more than one luminescence component, a more than one image sensor and a processing unit, respectively this image sensor is corresponding to one of in those luminescence components, this processing unit connects those image sensors, it is characterized in that, also comprise a timer, in this optical touch control apparatus be in dormant during, this timer is in order to periodically to activate the image sensor in those image sensors, cause this image sensor that activated to detect a indicant on the touch area, so as to determining waking up opportunity of this optical touch control apparatus.
13. optical touch control apparatus according to claim 12, it is characterized in that, this image sensor has a blocking stitch, this blocking stitch is electrically connected to this processing unit, and in this optical touch control apparatus be in dormant during, when this image sensor detects when having this indicant on this touch area, this image sensor sends an obstruction signal to this processing unit via this blocking stitch, causes this processing unit to wake whole this optical touch control apparatus up according to this obstruction signal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201319191U CN201616088U (en) | 2010-02-25 | 2010-02-25 | Optical touch device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010201319191U CN201616088U (en) | 2010-02-25 | 2010-02-25 | Optical touch device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201616088U true CN201616088U (en) | 2010-10-27 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010201319191U Expired - Fee Related CN201616088U (en) | 2010-02-25 | 2010-02-25 | Optical touch device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014131303A1 (en) * | 2013-02-28 | 2014-09-04 | Tencent Technology (Shenzhen) Company Limited | Method and apparatus for sensing gesture toward touch input device |
| CN112731834A (en) * | 2020-12-22 | 2021-04-30 | 重庆德科电子仪表有限公司 | System and method for low-power-consumption driving of indicator lamp of full-segment code instrument |
-
2010
- 2010-02-25 CN CN2010201319191U patent/CN201616088U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014131303A1 (en) * | 2013-02-28 | 2014-09-04 | Tencent Technology (Shenzhen) Company Limited | Method and apparatus for sensing gesture toward touch input device |
| US9465466B2 (en) | 2013-02-28 | 2016-10-11 | Tencent Technology (Shenzhen) Company Limited | Method and apparatus for sensing gesture toward touch input device |
| CN112731834A (en) * | 2020-12-22 | 2021-04-30 | 重庆德科电子仪表有限公司 | System and method for low-power-consumption driving of indicator lamp of full-segment code instrument |
| CN112731834B (en) * | 2020-12-22 | 2022-07-01 | 重庆德科电子仪表有限公司 | System and method for low-power-consumption driving of indicator lamp of full-segment code instrument |
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Legal Events
| Date | Code | Title | Description |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101027 Termination date: 20170225 |