CN102360252B - Photoelectric sensing device and implementation method thereof - Google Patents
Photoelectric sensing device and implementation method thereof Download PDFInfo
- Publication number
- CN102360252B CN102360252B CN201110314169.0A CN201110314169A CN102360252B CN 102360252 B CN102360252 B CN 102360252B CN 201110314169 A CN201110314169 A CN 201110314169A CN 102360252 B CN102360252 B CN 102360252B
- Authority
- CN
- China
- Prior art keywords
- circuit unit
- infrared signal
- power valve
- electrically connected
- unit
- 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
Abstract
The invention discloses a photoelectric sensing device and an implementation method thereof, belonging to the technical field of computer input devices. The device comprises a body, a transmitting tube, receiving devices, a circuit board and a cell unit, wherein the transmitting tube, the receiving devices, the circuit board and the cell unit are contained in the body; the transmitting tube and the receiving devices are electrically connected with the circuit board; the cell unit is electrically connected with the circuit board; a through hole is arranged on the bottom end face of the body; a power button is arranged on the body and controls the cell unit to be turned on; the transmitting tube is installed inside the through hole on the body and transmits infrared rays; the receiving devices are arranged at the two sides of the through hole; and an optical control circuit is arranged on the circuit board. The device has the following beneficial effects: the optical control circuit on the circuit board is utilized to be electrically connected with the transmitting tube and the receiving devices, thus ensuring the computer input device to detect and judge the movement locus of the device; and the device has a simple structure and low cost, is not limited by the working screen and has strong antijamming capability.
Description
Technical field
The present invention relates to computer entry device, especially relate to a kind of photoelectric induction device and its implementation.
Background technology
Photoelectric technology is widely used in the field such as Industry Control, input output device of computer.Data Enter, optical mouse, infrared photoelectric sensing switch etc. are carried out as used light pen.Occur in recent years a kind ofly on computer projection screen, carrying out virtual book by light pen and writing and the technology of computer operation and product.
Existing optical sensor can sensing light, thus turning circuit, and then coordinate luminescent device, then can complete object detection function.At present in computer entry device and interaction field, the movement locus following the tracks of luminous object can realize the input of computing machine.Due to computer entry device by detect illuminating source whether exist realize input, the luminescent control system of illuminating source itself takes the mode of non-Photoelectric Detection, with prevent to computer system gather light source information formed disturb.
Along with the development of photon blank and interaction technology, computer input is realized and mutual equipment is progressively released by detecting light spot position, manufacturer of many projectors is also proposed interactive projection machine system at present, but the light pen that interactive projection machine system uses or optical indicator are generally transmitted by button control, can not automatic sensing workplace and transmitting, this makes troubles to writing.Also there is the light pen transmitted by pressure touch at present, but this kind of mode needs press pressure to remain luminous, luminous touch control pen disclosed in a kind of pressure trigger luminous pen, CN200480034928.6 disclosed in patented claim CN200510041357.5 and use optical handwriting pen nib disclosed in the user input device of this luminous touch control pen and CN01269831.8 all to adopt pressure touch and luminous.But need certain pressure ability turning circuit by the light pen structure of pressure touch, the flexible working faces such as projection screen can not be write, cannot carry out, which has limited the application of light pen.
Summary of the invention
The object of the invention is to overcome deficiency of the prior art, provide a kind of structure simple, with low cost, by the restriction of work screen and the strong photoelectric induction device of antijamming capability and its implementation.
For reaching above-mentioned purpose, a kind of photoelectric induction device of the present invention, it comprises body, power valve, receiving trap, circuit board and battery unit, described power valve, receiving trap, circuit board and battery unit are contained in described body, described power valve and receiving trap and described circuit board are electrically connected, described battery unit and described circuit board are electrically connected, the bottom face of described body is provided with through hole, described body is provided with power knob, described power knob controls described battery unit conducting, send Infrared inside the through hole that described power valve is installed in described body, described receiving trap is arranged at described through hole both sides, described circuit board is provided with light-operated circuit.
Further, described power valve transmitting terminal vertically described through hole, described receiving trap oblique cutting is arranged at described through hole both sides, and described body bottom contacts or close to reflecting surface, described receiving trap receives the Infrared signal of being returned by described reflective surface.
Further, described reflecting surface is flexible curtain.
Further, described body is hollow pen type structure or finger-worn type apparatus structure.
Further, described light-operated circuit comprises power circuit unit, pulse unit and on-off circuit unit, described power circuit unit and described pulse unit and described on-off circuit unit are electrically connected, described pulse unit is provided with oscillation circuit unit, the attenuator circuit unit be electrically connected with oscillation circuit unit and electronic switch, described electronic switch and described power valve are electrically connected, described on-off circuit unit and described electronic switch are electrically connected, described on-off circuit unit processes the Infrared signal that described receiving trap receives and controls described electronic switch break-make.
Further, described electronic switch is provided with normally closed contact and normally opened contact, and described normally closed contact and described attenuator circuit unit are electrically connected, and described normally opened contact and described power circuit unit are electrically connected; Described on-off circuit unit is electrically connected successively and is provided with amplifier circuit unit, bandpass filtering unit, integrating circuit unit and comparer, and described amplifier circuit unit and described receiving trap are electrically connected; Described comparator output terminal and described electronic switch are electrically connected, and described comparator input terminal is connected with described integrating circuit unit output terminal, electronic switch described in described comparator drives.
The implementation method of a kind of photoelectric induction device of the present invention, comprises the steps:
1., press power knob, described oscillation circuit unit sends a frequency pulse signal, and described attenuator circuit unit is supplied to power valve and sends this frequency Infrared signal after pulse signal is carried out attenuation processing;
2., described body bottom contact or close to reflecting surface time, this frequency Infrared signal that described power valve sends is received by described receiving trap by the diffuse reflection effect of reflecting surface;
3., described receiving trap receive this frequency Infrared signal carry out in described amplifier circuit unit amplifications process after be sent to bandpass filtering unit, the pulse signal of described bandpass filtering unit to this frequency non-is isolated;
What 4., described receiving trap received charges from this frequency Infrared signal of reflective surface to described integrating circuit unit, after first time period, the output voltage of described integrating circuit unit reaches the forward voltage of comparer, the normally opened contact of electronic switch described in described comparator drives is connected, and normally closed contact disconnects; Now described power valve is connected with described power circuit unit conducting, and described power valve sends strong Infrared signal;
5., described power valve stops sending this frequency Infrared signal, described integrating circuit unit stops receiving Infrared signal and discharging, after the second time period, when described integrating circuit unit output voltage is lower than comparer ME for maintenance, the normally closed contact of electronic switch described in described comparator drives is connected, normally opened contact disconnects, and described power valve stops sending strong Infrared signal, and then sends this frequency Infrared signal;
6., repetitive operation step 2. ~ 5., described power valve sends this frequency Infrared signal, reflecting surface is not left in body bottom, described power valve sends this frequency Infrared signal and strong Infrared signal in turn in a cycle, and computer entry device detects and judges that power valve launches strong Infrared signal.
Further, this frequency Infrared signal described is 37KHz, and the described cycle is first time period and the second time period sum.
In sum, a kind of photoelectric induction device of the present invention by installing power valve, receiving trap and circuit board in body, receiving trap receives the Infrared signal of returning from reflective surface, the light-operated circuit on described circuit board is utilized to be electrically connected described power valve and receiving trap, and control described power valve and send different Infrared signals in different time sections, thus allow computer entry device detect to judge movement locus of the present invention, structure is simple, with low cost, do not limit by work screen and antijamming capability is strong.The implementation method of a kind of photoelectric induction device of the present invention passes through the bandpass filtering cell isolation pulse signal of light-operated circuit, integrating circuit unit carries out the output voltage that charge or discharge control integrating circuit unit, the forward voltage of comparer described in described integrating circuit unit output voltage and ME for maintenance relatively after, and then drive described electronic switch to be switched on or switched off between normally closed contact and normally opened contact, thus control described power valve and launch different Infrared signals, movement locus of the present invention can be detected by computer entry device and judge and realize writing function.
Accompanying drawing explanation
Fig. 1 is the structural representation of a kind of photoelectric induction device of the present invention.
Fig. 2 is the theory diagram of light-operated circuit of the present invention shown in Fig. 1.
The Infrared signal waveforms that Fig. 3 sends for power valve of the present invention shown in Fig. 1.
Embodiment
For feature of the present invention, technological means and the specific purposes reached, function can be understood further, below in conjunction with accompanying drawing and embodiment, the present invention is described in further detail.
Refer to Fig. 1 to Fig. 3, a kind of photoelectric induction device of the present invention comprises body 1, power valve 2, receiving trap 3, circuit board 4 and battery unit 5, described power valve 2, receiving trap 3, circuit board 4 and battery unit 5 are contained in described body 1, described power valve 2 and receiving trap 3 are electrically connected with described circuit board 4, described battery unit 5 is electrically connected with described circuit board 4, runs power supply in order to provide described circuit board 4.Described body 1 is hollow pen type structure, also finger-worn type apparatus structure can be designed to as required, the bottom face of described body 1 is provided with through hole 10, and described body 1 upper surface is provided with power knob 20, and described power knob 20 controls the conducting of described battery unit 5 to provide power supply.
Described power valve 2 is installed in inside the through hole 10 of described body 1, and described power valve 2 sends Infrared, and described power valve 2 transmitting terminal is described through hole 10 place vertically, and the Infrared that described power valve 2 sends is penetrated by through hole 10.
Described receiving trap 3 oblique cutting is arranged at described through hole 10 both sides, and the Infrared signal reflected from the Infrared that power valve 2 sends by reflecting surface 30 in order to reception, described reflecting surface 30 can be flexible curtain.
Described circuit board 4 is provided with light-operated circuit 40, described light-operated circuit 40 comprises power circuit unit 41, pulse unit 42 and on-off circuit unit 43, described power circuit unit 41 is electrically connected, in order to provide the operating voltage of described pulse unit 42 and described on-off circuit unit 43 with described pulse unit 42 and described on-off circuit unit 43.Described pulse unit 42 is provided with oscillation circuit unit 421, the attenuator circuit unit 422 be electrically connected with oscillation circuit unit 421 and electronic switch K, described electronic switch K and described power valve 2 are electrically connected, described electronic switch K is provided with normally closed contact K1 and normally opened contact K2, described normally closed contact K1 and described attenuator circuit unit 422 are electrically connected, described normally opened contact K2 and described power circuit unit 41 are electrically connected, described oscillation circuit unit 421 sends 37KHz pulse signal, described attenuator circuit unit 422 carries out attenuation processing to the 37KHz pulse signal that described oscillation circuit unit 421 sends, 37KHz Infrared signal is sent in order to provide described power valve 2.
Described on-off circuit unit 43 is electrically connected successively and is provided with amplifier circuit unit 431, bandpass filtering unit 432, integrating circuit unit 433 and comparer 434, described amplifier circuit unit 431 is electrically connected with described receiving trap 3, and the Infrared signal in order to receive described receiving trap 3 carries out amplification process; Described bandpass filtering unit 432 allows the pulse signal of 37KHz frequency range to pass through, the Infrared signal that described receiving trap 3 receives is by charging to described integrating circuit unit 433 after filtering process, and the output voltage of described integrating circuit unit 433 changes thereupon; Described comparer 434 output terminal and described electronic switch K are electrically connected, described comparer 434 is provided with forward voltage and ME for maintenance, described comparer 434 input end is connected with described integrating circuit unit 433 output terminal, described forward voltage and ME for maintenance and integrating circuit unit 433 output voltage compare, described comparer 434 drives described electronic switch K conducting between normally closed contact K1 and normally opened contact K2, and then controls the connecting and disconnecting of the circuit of described power circuit unit 41 and described power valve 2.
The present invention presses power knob 20, described oscillation circuit unit 421 sends 37KHz pulse signal, described attenuator circuit unit 422 is supplied to power valve 2 and sends 37KHz Infrared signal after 37KHz pulse signal is carried out attenuation processing, the contact of described body 1 bottom or close to reflecting surface 30 time, the 37KHz Infrared signal that described power valve 2 sends is received by described receiving trap 3 by the diffuse reflection effect of reflecting surface 30, the 37KHz Infrared signal that described receiving trap 3 receives is sent to bandpass filtering unit 432 carry out amplification process in described amplifier circuit unit 431 after, the pulse signal of described bandpass filtering unit 432 to non-37KHz frequency range is isolated, what described receiving trap 3 received charges from the 37KHz Infrared signal of reflecting surface 30 reflection to described integrating circuit unit 433, described integrating circuit unit 433 output voltage reaches the forward voltage of comparer 434, described comparer 434 drives the normally opened contact K2 of described electronic switch K to connect, normally closed contact K1 disconnects.Now described power valve 2 is connected with the conducting of described power circuit unit 41, and described power valve 2 sends strong Infrared signal, detects judge movement locus of the present invention for computer entry device.Simultaneously, described power valve 2 stops sending 37KHz Infrared signal, described integrating circuit unit 433 stops receiving Infrared signal and discharging, when described integrating circuit unit 433 output voltage is lower than comparer 434 ME for maintenance, described comparer 434 drives the normally closed contact K1 of described electronic switch K to connect, and normally opened contact K2 disconnects, and described power valve 2 stops sending strong Infrared signal, and then send 37KHz Infrared signal, now computer entry device cannot detect judgement.Repetitive operation, movement locus of the present invention can be detected by computer entry device and judges and then realize writing function.
The implementation method step of described a kind of photoelectric induction device is as follows:
1., press power knob 20, described oscillation circuit unit 421 sends 37KHz pulse signal, and described attenuator circuit unit 422 is supplied to power valve 2 and sends 37KHz Infrared signal after 37KHz pulse signal is carried out attenuation processing.
2., described body 1 bottom not close to reflecting surface 30 time, the 37KHz Infrared signal that described power valve 2 sends cannot carry out reflecting and received by described receiving trap 3, described electronic switch K normally closed contact K1 continue to connect.
The contact of described body 1 bottom or close to reflecting surface 30 time, the 37KHz Infrared signal that described power valve 2 sends is received by described receiving trap 3 by the diffuse reflection effect of reflecting surface 30.
3., described receiving trap 3 receive 37KHz Infrared signal carry out in described amplifier circuit unit 431 amplifications process after be sent to bandpass filtering unit 432, the pulse signal of described bandpass filtering unit 432 to non-37KHz frequency range is isolated.
What 4., described receiving trap 3 received charges from the 37KHz Infrared signal of reflecting surface 30 reflection to described integrating circuit unit 433, after first time period T1, the output voltage of described integrating circuit unit 433 reaches the forward voltage of comparer 434, described comparer 434 drives the normally opened contact K2 of described electronic switch K to connect, and normally closed contact K1 disconnects.Now described power valve 2 is connected with the conducting of described power circuit unit 41, and described power valve 2 sends strong Infrared signal, detects judge movement locus of the present invention for computer entry device.
5., described power valve 2 stops sending 37KHz Infrared signal, described integrating circuit unit 433 stops receiving Infrared signal and discharging, after the second time period T2, when described integrating circuit unit 433 output voltage is lower than comparer 434 ME for maintenance, described comparer 434 drives the normally closed contact K1 of described electronic switch K to connect, normally opened contact K2 disconnects, described power valve 2 stops sending strong Infrared signal, and then send 37KHz Infrared signal, now computer entry device cannot detect judgement.
6., repetitive operation step 2. ~ 5., described power valve 2 sends 37KHz Infrared signal, reflecting surface 30 is not left in body 1 bottom, described power valve 2 sends 37KHz Infrared signal and strong Infrared signal in turn in cycle T, and computer entry device detects movement locus of the present invention when judging that power valve 2 launches strong Infrared signal.Described cycle T is calculated by the time constant R*C of integrating circuit unit 433 to be determined, described cycle T is first time period T1 and the second time period T2 sum.
In sum, a kind of photoelectric induction device of the present invention by installing power valve 2, receiving trap 3 and circuit board 4 in body 1, receiving trap 3 receives the Infrared signal reflected from reflecting surface 30, the light-operated circuit 40 on described circuit board 4 is utilized to be electrically connected described power valve 2 and receiving trap 3, and control described power valve 2 and send different Infrared signals in different time sections, thus allow computer entry device detect to judge movement locus of the present invention, structure is simple, with low cost, do not limit by work screen and antijamming capability is strong.The implementation method of a kind of photoelectric induction device of the present invention isolates pulse signal by the bandpass filtering unit 432 of light-operated circuit 40, integrating circuit unit 433 carries out the output voltage that charge or discharge control integrating circuit unit 433, the forward voltage of comparer 434 described in described integrating circuit unit 433 output voltage and ME for maintenance relatively after, and then drive described electronic switch K to be switched on or switched off between normally closed contact K1 and normally opened contact K2, thus control described power valve 2 and launch different Infrared signals, movement locus of the present invention can be detected judgement by computer entry device and realize writing function.
The above embodiment only have expressed one embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as limitation of the scope of the invention.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, protection scope of the present invention should be as the criterion with claims.
Claims (8)
1. a photoelectric induction device, comprise body (1), power valve (2), receiving trap (3), circuit board (4) and battery unit (5), described power valve (2), receiving trap (3), circuit board (4) and battery unit (5) are contained in described body (1), described power valve (2) and receiving trap (3) are electrically connected with described circuit board (4), described battery unit (5) and described circuit board (3) are electrically connected, the bottom face of described body (1) is provided with through hole (10), it is characterized in that: described body (1) is provided with power knob (20), described power knob (20) controls described battery unit (5) conducting, described power valve (2) is installed in through hole (10) inner side of described body (1) and sends Infrared, described receiving trap (3) is arranged at described through hole (10) both sides, described circuit board (4) is provided with light-operated circuit (40), described power valve (2) transmitting terminal is described through hole (10) place vertically, described body (1) bottom contacts or close to reflecting surface (30), described receiving trap (3) receives the Infrared signal reflected by described reflecting surface (30), described light-operated circuit (40) comprises power circuit unit (41), pulse unit (42) and on-off circuit unit (43), described power circuit unit (41) is electrically connected with described pulse unit (42) and described on-off circuit unit (43), described pulse unit (42) is provided with oscillation circuit unit (421), the attenuator circuit unit (422) be electrically connected with oscillation circuit unit (421) and electronic switch (K), described electronic switch (K) and described power valve (2) are electrically connected, described on-off circuit unit (43) and described electronic switch (K) are electrically connected, described on-off circuit unit (43) processes the Infrared signal that described receiving trap (3) receives and controls described electronic switch (K) break-make.
2. a kind of photoelectric induction device according to claim 1, is characterized in that: described receiving trap (3) oblique cutting is arranged at described through hole (10) both sides.
3. a kind of photoelectric induction device according to claim 2, is characterized in that: described reflecting surface (30) is flexible curtain.
4. a kind of photoelectric induction device according to claim 1, is characterized in that: described body (1) is hollow pen type structure or finger-worn type apparatus structure.
5. a kind of photoelectric induction device according to claim 1, it is characterized in that: described electronic switch (K) is provided with normally closed contact (K1) and normally opened contact (K2), described normally closed contact (K1) and described attenuator circuit unit (422) are electrically connected, and described normally opened contact (K2) and described power circuit unit (41) are electrically connected; Described on-off circuit unit (43) is electrically connected successively and is provided with amplifier circuit unit (431), bandpass filtering unit (432), integrating circuit unit (433) and comparer (434), and described amplifier circuit unit (431) and described receiving trap (3) are electrically connected; Described comparer (434) output terminal and described electronic switch (K) are electrically connected, described comparer (434) input end is connected with described integrating circuit unit (433) output terminal, and described comparer (434) drives described electronic switch (K).
6. a kind of photoelectric induction device according to claim 1, is characterized in that: described oscillation circuit unit (421) sends 37KHz pulse signal.
7. the implementation method of a kind of photoelectric induction device according to claim 5, is characterized in that, comprise the steps:
1. power knob (20), is pressed, described oscillation circuit unit (421) sends a frequency pulse signal, is supplied to power valve (2) and sends this frequency Infrared signal after pulse signal is carried out attenuation processing by described attenuator circuit unit (422);
2., described body (1) bottom contact or close to reflecting surface (30) time, this frequency Infrared signal that described power valve (2) sends is received by described receiving trap (3) by the diffuse reflection effect of reflecting surface (30);
3., this frequency Infrared signal of receiving of described receiving trap (3) is sent to bandpass filtering unit (432) carry out amplification process in described amplifier circuit unit (431) after, and the pulse signal of described bandpass filtering unit (432) to this frequency non-is isolated;
4. this frequency Infrared signal reflected from reflecting surface (30) that, described receiving trap (3) receives charges to described integrating circuit unit (433), after first time period (T1), the output voltage of described integrating circuit unit (433) reaches the forward voltage of comparer (434), described comparer (434) drives the normally opened contact (K2) of described electronic switch (K) to connect, and normally closed contact (K1) disconnects; Now described power valve (2) is connected with described power circuit unit (41) conducting, and described power valve (2) sends strong Infrared signal;
5., described power valve (2) stops sending this frequency Infrared signal, the stopping of described integrating circuit unit (433) receives Infrared signal and discharges, after the second time period (T2), when described integrating circuit unit (433) output voltage is lower than comparer (434) ME for maintenance, described comparer (434) drives the normally closed contact (K1) of described electronic switch (K) to connect, normally opened contact (K2) disconnects, described power valve (2) stops sending strong Infrared signal, and then send this frequency Infrared signal,
6., repetitive operation step 2. ~ 5., described power valve (2) sends this frequency Infrared signal, reflecting surface (30) is not left in body (1) bottom, described power valve (2) sends this frequency Infrared signal and strong Infrared signal in turn within a cycle (T), and computer entry device detects and judges that power valve (2) launches strong Infrared signal.
8. the implementation method of a kind of photoelectric induction device according to claim 7, it is characterized in that: this frequency Infrared signal described is 37KHz, the described cycle (T) is first time period (T1) and the second time period (T2) sum.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110314169.0A CN102360252B (en) | 2011-10-17 | 2011-10-17 | Photoelectric sensing device and implementation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201110314169.0A CN102360252B (en) | 2011-10-17 | 2011-10-17 | Photoelectric sensing device and implementation method thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102360252A CN102360252A (en) | 2012-02-22 |
| CN102360252B true CN102360252B (en) | 2015-01-14 |
Family
ID=45585587
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201110314169.0A Expired - Fee Related CN102360252B (en) | 2011-10-17 | 2011-10-17 | Photoelectric sensing device and implementation method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102360252B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103970298A (en) * | 2013-01-24 | 2014-08-06 | 南京通派光电科技有限公司 | Photovoltaic pen and electronic white board system comprising same |
| CN105281749A (en) * | 2015-10-30 | 2016-01-27 | 中国电子科技集团公司第四十四研究所 | Light-frequency conversion circuit |
| CN106052561B (en) * | 2016-08-05 | 2019-07-09 | 京东方科技集团股份有限公司 | Position sensor and including its conveyer and utilize its carry out position correction method |
| CN110220541B (en) * | 2019-05-17 | 2021-03-26 | 广东博智林机器人有限公司 | Infrared detection device and infrared photoelectric sensor |
| CN110307861B (en) * | 2019-07-05 | 2024-04-09 | 托菲传感技术(上海)股份有限公司 | Photoelectric sensor device and control system |
| CN110296721B (en) * | 2019-07-08 | 2024-03-01 | 托菲传感技术(上海)股份有限公司 | Strong self-correction photoelectric sensor and application method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6707444B1 (en) * | 2000-08-18 | 2004-03-16 | International Business Machines Corporation | Projector and camera arrangement with shared optics and optical marker for use with whiteboard systems |
| CN101719028A (en) * | 2010-01-27 | 2010-06-02 | 罗兆汇 | Infrared radio frequency pressure sensitive electric whiteboard pen |
| CN201666952U (en) * | 2009-09-23 | 2010-12-08 | 伊玛精密电子（苏州）有限公司 | Photoelectric sensing device |
| CN202257484U (en) * | 2011-10-17 | 2012-05-30 | 东莞华中科技大学制造工程研究院 | Photoelectric induction device |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5810232A (en) * | 1981-07-10 | 1983-01-20 | Nec Corp | Light pen for crt displaying device |
| WO2002048853A1 (en) * | 2000-12-15 | 2002-06-20 | Finger System Inc. | Pen type optical mouse device and method of controlling the same |
| US20030016212A1 (en) * | 2001-06-27 | 2003-01-23 | Stefan Lynggaard | Method, computer program product and device for wireless connection |
| JP2004086462A (en) * | 2002-08-26 | 2004-03-18 | Taizo Saito | Pen type computer input device |
| US7649527B2 (en) * | 2003-09-08 | 2010-01-19 | Samsung Electronics Co., Ltd. | Image display system with light pen |
| CN100346276C (en) * | 2005-01-13 | 2007-10-31 | 天瀚科技股份有限公司 | Optical path and penpoint coaxial optical pen |
| JP5257055B2 (en) * | 2008-12-24 | 2013-08-07 | 富士ゼロックス株式会社 | Reader |
| CN102135822B (en) * | 2011-03-15 | 2012-11-28 | 南京方瑞科技有限公司 | Photoelectric detection multi-directional trigger electronic pen |
-
2011
- 2011-10-17 CN CN201110314169.0A patent/CN102360252B/en not_active Expired - Fee Related
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6707444B1 (en) * | 2000-08-18 | 2004-03-16 | International Business Machines Corporation | Projector and camera arrangement with shared optics and optical marker for use with whiteboard systems |
| CN201666952U (en) * | 2009-09-23 | 2010-12-08 | 伊玛精密电子（苏州）有限公司 | Photoelectric sensing device |
| CN101719028A (en) * | 2010-01-27 | 2010-06-02 | 罗兆汇 | Infrared radio frequency pressure sensitive electric whiteboard pen |
| CN202257484U (en) * | 2011-10-17 | 2012-05-30 | 东莞华中科技大学制造工程研究院 | Photoelectric induction device |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102360252A (en) | 2012-02-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102360252B (en) | Photoelectric sensing device and implementation method thereof | |
| CN104182049B (en) | Non-contact type infrared two-dimensional gesture detection and recognition device and method | |
| US20160209940A1 (en) | Stylus synchronization with a digitizer system | |
| TWI509531B (en) | Apparatus for identifying touch signal and method thereof | |
| WO2010123651A3 (en) | System and method for presenting objects actionable via a touch screen | |
| CN107045408A (en) | Touch control method, smart pen, touch control identification method, apparatus and system | |
| CN104090633A (en) | Mobile device protective cover and method for enabling touch screen mobile device to be in dormant state | |
| KR20120086811A (en) | Terminal having touch-screen and method for changing touch mode thereof | |
| WO2017148041A1 (en) | Display screen, stylus and display module | |
| CN104657003A (en) | Infrared 3D (Three-Dimensional) touch system and terminal thereof | |
| CN206532259U (en) | A kind of infrared touch pen and supporting infrared touch panel | |
| CN201465072U (en) | Virtual touch screen | |
| CN102023753B (en) | A kind of proximity test device and electronic equipment | |
| CN105279518A (en) | Object detection method and device | |
| CN202110514U (en) | Touch screen having ultrasonic and infrared touch functions | |
| CN202257484U (en) | Photoelectric induction device | |
| CN103488355A (en) | Video window opening method and system as well as laser pen | |
| CN107077314B (en) | Electronic equipment | |
| KR101847517B1 (en) | Touch screen terminal and near field communication method, apparatus and system thereof | |
| CN104536596A (en) | Active type capacitive pen, touch control device and method for automatically recognizing capacitive touch control panel | |
| CN103207706A (en) | Double-light pen electronic whiteboard system and light pen identifying method | |
| CN104079024A (en) | Active type touch pen and charging method thereof | |
| CN106249092A (en) | Touch screen automatic test approach and system | |
| CN104423718B (en) | The infrared multi-point touch screen system of multi-mode operation | |
| CN202041938U (en) | Multi-point touch control device of laser pen for projector screen |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20150114 Termination date: 20151017 |
|
| EXPY | Termination of patent right or utility model |