CN103440053B - Time-division processing light pen electric whiteboard system - Google Patents
Time-division processing light pen electric whiteboard system Download PDFInfo
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- CN103440053B CN103440053B CN201310324515.2A CN201310324515A CN103440053B CN 103440053 B CN103440053 B CN 103440053B CN 201310324515 A CN201310324515 A CN 201310324515A CN 103440053 B CN103440053 B CN 103440053B
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Abstract
The invention discloses a kind of time-division processing light pen electric whiteboard system, including signal processing apparatus and at least two light pens, described signal processing apparatus includes the imageing sensor, signal processing circuit and the signal projector that are sequentially connected with, described signal processing circuit is alternately produced two different triggering signals according to the scan period of imageing sensor, and triggering signal is launched by described signal projector；Described light pen includes luminescent device and signal receiver, the signal that described signal receiver receives is different, and the signal that signal projector sends in corresponding signal processing apparatus respectively, and signal is judged, light pen is made to be made whether the response of work, it is achieved time-division processing.Present invention reduces the cost of light pen, solve light pen and control imageing sensor and the stationary problem of other light pen needs simultaneously, optimize the impression problem that in the electronic whiteboard of optical imagery technology, many are write further.<b></b>
Description
Technical field
The present invention relates to a kind of light pen electric whiteboard system, particularly relate to a kind of time-division processing light pen electric whiteboard system.
Background technology
At present in the electric whiteboard system of optical imagery technology, when two light pens are write simultaneously, owing to the shape of hot spot, brightness, wavelength are all consistent, so when two light pens near time, owing to two hot spots merge together, signal processing apparatus cannot be distinguished from out the concrete position of two hot spots, so current processing mode is all, two light pens near time artificially to arrange that distance light pen cannot be operated or is processed by two light pens be a light pen, have impact on Consumer's Experience so to a great extent.
The optimized integration adopting the electric whiteboard system of optical imagery technology is that light pen position is followed the tracks of, and is called in the Chinese invention patent of " system and method for computer coordinate with the input of the information of control " in patent No. ZL011080477, patent of invention publication number CN1305143A, name and has a detailed description.Its operation principle is: the luminous point produced with light pen represents the position of impact point, introduce camera head real-time image acquisition, with the real-time analysis chart image signal of signal processing apparatus the positional information extracting luminous point, it is input to computer by interface circuit and corresponding software, carries out calibrating coordinates with coordinates correction algorithm and make light target position follow the tracks of the physical location of light pen.In order to enable signal processing apparatus effectively to identify the luminous point of two and above light pen simultaneously, existing technology majority is to be processed by software, in software set when two light pens close to some apart from after, although signal processing apparatus is still in work, but the compulsory event masking two light pens of software, from the angle of user be exactly, it may appear that two light pens near time, there is a segment distance cannot to write or operate, largely reducing the experience of user.
Current patent No. ZL2011100845771 mentioned and light pen can will be implanted synchronous signal receiver and synchronous signal transmitter.When light pen work therein, the light pulse of its signal projector can be received by the synchronous signal receiver in an other light pen, and an other light pen just will quit work, and vice versa.This scheme needs to introduce in signal processing apparatus the imageing sensor of global shutter and needs imageing sensor to have at least to possess single the double and above speed of light pen and could realize normal use.The major defect of this scheme also resides in, light pen both needs possess synchronous signal receiver and is also required to possess synchronous signal transmitter, largely the structure of light pen is complicated, but also add cost, and the overall situation exposure of imageing sensor is also had certain requirement, processing the imageing sensor in device and an other light pen by light pen control signal simultaneously, the probability of mistake can be relatively larger, and in current industry, all the imageing sensor of exposure is universal not enough.
Summary of the invention
For the deficiencies in the prior art, it is an object of the invention to, a kind of time-division processing light pen electric whiteboard system is provided, reduce the cost of light pen, solve light pen and control imageing sensor and the stationary problem of other light pen needs simultaneously, optimize many impression problems write in the electronic whiteboard of optical imagery technology further.
For solving above-mentioned technical problem, the technical solution used in the present invention is: time-division processing light pen electric whiteboard system, it is characterized in that: include signal processing apparatus and at least two light pens, described signal processing apparatus includes the imageing sensor, signal processing circuit and the signal projector that are sequentially connected with, described signal processing circuit is alternately produced, according to the scan period of imageing sensor, the triggering signal that two or more is different, and triggering signal is launched by described signal projector；Described light pen includes luminescent device and signal receiver, the signal that described signal receiver receives is different, and the signal that signal projector sends in corresponding signal processing apparatus respectively, and signal is judged, light pen is made to be made whether the response of work, it is achieved time-division processing.
Aforesaid time-division processing light pen electric whiteboard system, it is characterised in that: described signal receiver judges that the process of signal is:
The intermittent scanning time assuming imageing sensor is T, and when first T terminates, signal projector produces one and triggers signal A, and when 2T terminates, signal projector produces one and triggers signal B, and signal projector is sequentially generated above-mentioned triggering signal；
Signal receiver in two light pens judges after receiving triggering signal, if a-signal, then light pen A1 meeting normal operation, light pen A2 does not work simultaneously；If B signal, then light pen A2 meeting normal operation, and light pen A1 does not work.
Aforesaid time-division processing light pen electric whiteboard system, it is characterised in that: described signal processing apparatus is connected with computer by interface circuit, and signal processing apparatus transfers data to computer with 2T for the cycle, computer do subsequent treatment.
Aforesaid time-division processing light pen electric whiteboard system, it is characterised in that: in described light pen, the working time of luminescent device and the scan period of imageing sensor are identical.
Aforesaid time-division processing light pen electric whiteboard system, it is characterised in that: described signal projector is a signal generating circuit that can produce carrier signal.
Aforesaid time-division processing light pen electric whiteboard system, it is characterised in that: described signal receiver is infrared receiving module.
The invention has the beneficial effects as follows: receive, by signal receiver, the signal that signal projector sends, and signal is judged, light pen is made to be made whether the response of work, realize time-division processing, reduce the cost of light pen, solve light pen and control imageing sensor and the stationary problem of other light pen needs simultaneously, optimize the impression problem that in the electronic whiteboard of optical imagery technology, many are write further.
Accompanying drawing explanation
Fig. 1 is principles of the invention block diagram.
Detailed description of the invention
For disclosing technical scheme further, embodiments of the present invention are described in detail: as shown in Figure 1 below in conjunction with accompanying drawing, time-division processing light pen electric whiteboard system, including signal processing apparatus and two light pens, described signal processing apparatus includes the imageing sensor, signal processing circuit and the signal projector that are sequentially connected with, described imageing sensor is arranged in photographic head, and described signal projector is a signal generating circuit that can produce carrier signal.Described signal processing circuit is alternately produced two different triggering signals according to the scan period of imageing sensor, and triggering signal is launched by described signal projector.
Described light pen includes luminescent device and signal receiver, and described signal receiver is infrared receiving module, and in described light pen, the working time of luminescent device and the scan period of imageing sensor are identical.The signal that described signal receiver receives is different, and the signal that signal projector sends in corresponding signal processing apparatus respectively, and signal is judged, makes light pen be made whether the response of work, it is achieved time-division processing.
Described signal receiver judges that the process of signal is:
The intermittent scanning time assuming imageing sensor is T, and when first T terminates, signal projector produces one and triggers signal A, and when 2T terminates, signal projector produces one and triggers signal B, and signal projector is sequentially generated above-mentioned triggering signal；
Signal receiver in two light pens judges after receiving triggering signal, if a-signal, then light pen A1 meeting normal operation, light pen A2 does not work simultaneously；If B signal, then light pen A2 meeting normal operation, and light pen A1 does not work.Within the cycle of a 2T, the time that light pen A1 and A2 all works is T, and circulation goes down to realize time-division processing so successively.
Described signal processing apparatus is connected with computer by interface circuit, and signal processing apparatus transfers data to computer with 2T for the cycle, computer do subsequent treatment.
The present invention receives, by signal receiver, the signal that signal projector sends, and signal is judged, light pen is made to be made whether the response of work, realize time-division processing, reduce the cost of light pen, solve light pen and control imageing sensor and the stationary problem of other light pen needs simultaneously, optimize the impression problem that in the electronic whiteboard of optical imagery technology, many are write further.
Above by description of listed embodiment, elaborate the basic ideas and basic principles of the present invention.But the present invention is not limited to above-mentioned listed embodiment, every equivalent variations, improvement made based on technical scheme and the behavior such as deliberately deteriorate, protection scope of the present invention all should be belonged to.
Claims (6)
1. time-division processing light pen electric whiteboard system, it is characterized in that: include signal processing apparatus and at least two light pens, described signal processing apparatus includes the imageing sensor, signal processing circuit and the signal projector that are sequentially connected with, described signal processing circuit is alternately produced, according to the scan period of imageing sensor, the triggering signal that two or more is different, and triggering signal is launched by described signal projector；Described light pen includes luminescent device and signal receiver, the signal that described signal receiver receives is different, and the signal that signal projector sends in corresponding signal processing apparatus respectively, and signal is judged, light pen is made to be made whether the response of work, it is achieved time-division processing.
2. time-division processing light pen electric whiteboard system according to claim 1, it is characterised in that: described signal receiver judges that the process of signal is:
The intermittent scanning time of imageing sensor is T, and when first T terminates, signal projector produces one and triggers signal A, and when 2T terminates, signal projector produces one and triggers signal B, and signal projector is sequentially generated above-mentioned triggering signal；
Signal receiver in two light pens judges after receiving triggering signal, if a-signal, then light pen A1 meeting normal operation, light pen A2 does not work simultaneously；If B signal, then light pen A2 meeting normal operation, and light pen A1 does not work.
3. time-division processing light pen electric whiteboard system according to claim 1, it is characterised in that: described signal processing apparatus is connected with computer by interface circuit, and signal processing apparatus transfers data to computer with 2T for the cycle.
4. according to described time-division processing light pen electric whiteboard system arbitrary in claim 1-3, it is characterised in that: in described light pen, the working time of luminescent device and the scan period of imageing sensor are identical.
5. time-division processing light pen electric whiteboard system according to claim 4, it is characterised in that: described signal projector is a signal generating circuit that can produce carrier signal.
6. time-division processing light pen electric whiteboard system according to claim 4, it is characterised in that: described signal receiver is infrared receiving module.
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| CN201310324515.2A CN103440053B (en) | 2013-07-30 | 2013-07-30 | Time-division processing light pen electric whiteboard system |
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| CN201310324515.2A CN103440053B (en) | 2013-07-30 | 2013-07-30 | Time-division processing light pen electric whiteboard system |
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| CN103440053A CN103440053A (en) | 2013-12-11 |
| CN103440053B true CN103440053B (en) | 2016-06-29 |
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Citations (8)
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| EP0762319A2 (en) * | 1995-08-24 | 1997-03-12 | Symbios Logic Inc. | Graphical input apparatus and method |
| US5995112A (en) * | 1997-06-19 | 1999-11-30 | Vlsi Technology, Inc. | Color signature detection of objects on a computer display |
| CN101042625A (en) * | 2006-03-22 | 2007-09-26 | 深圳市巨龙科教高技术股份有限公司 | Electromagnetic induction interactive electronic white board and system thereof |
| CN102135842A (en) * | 2011-04-06 | 2011-07-27 | 南京方瑞科技有限公司 | Synchronous light pen electronic whiteboard system |
| WO2011120130A1 (en) * | 2010-04-01 | 2011-10-06 | Smart Technologies Ulc | Multi-pointer disambiguation by combining image and acceleration data |
| CN202472619U (en) * | 2011-12-30 | 2012-10-03 | 朱立波 | Common-frequency multi-pen electronic whiteboard |
| CN102736818A (en) * | 2011-04-12 | 2012-10-17 | 北京瑞麟百嘉科技有限公司 | Electromagnetic multi-pen electronic whiteboard |
| CN103186310A (en) * | 2011-12-30 | 2013-07-03 | 朱立波 | Electronic white board with multiple common-frequency pens |
-
2013
- 2013-07-30 CN CN201310324515.2A patent/CN103440053B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0762319A2 (en) * | 1995-08-24 | 1997-03-12 | Symbios Logic Inc. | Graphical input apparatus and method |
| US5995112A (en) * | 1997-06-19 | 1999-11-30 | Vlsi Technology, Inc. | Color signature detection of objects on a computer display |
| CN101042625A (en) * | 2006-03-22 | 2007-09-26 | 深圳市巨龙科教高技术股份有限公司 | Electromagnetic induction interactive electronic white board and system thereof |
| WO2011120130A1 (en) * | 2010-04-01 | 2011-10-06 | Smart Technologies Ulc | Multi-pointer disambiguation by combining image and acceleration data |
| CN102135842A (en) * | 2011-04-06 | 2011-07-27 | 南京方瑞科技有限公司 | Synchronous light pen electronic whiteboard system |
| CN102736818A (en) * | 2011-04-12 | 2012-10-17 | 北京瑞麟百嘉科技有限公司 | Electromagnetic multi-pen electronic whiteboard |
| CN202472619U (en) * | 2011-12-30 | 2012-10-03 | 朱立波 | Common-frequency multi-pen electronic whiteboard |
| CN103186310A (en) * | 2011-12-30 | 2013-07-03 | 朱立波 | Electronic white board with multiple common-frequency pens |
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