CN1294336A - Pen writing and input system for computer - Google Patents
Pen writing and input system for computer Download PDFInfo
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- CN1294336A CN1294336A CN 99114502 CN99114502A CN1294336A CN 1294336 A CN1294336 A CN 1294336A CN 99114502 CN99114502 CN 99114502 CN 99114502 A CN99114502 A CN 99114502A CN 1294336 A CN1294336 A CN 1294336A
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Abstract
A pen input method and system for computer can input the written trace information and operation control information to computer under control of software. It features use of optical pen to point object dot and use of real-time image analysis to recognize the object dot and analyzing its coordinate. Its advantages are high flexibility and efficiency.
Description
The present invention relates to a kind of being used for belongs to electronic technology field to the writing and the control information input media of computing machine input writing handwriting information or control information operation.
Prior art, as various clipboard products and the portable computer that can directly on screen, write, be in special clipboard or display surface is provided with sensor, through special design, make when special nib contacts writing plane, the sensor on clipboard or the display can be experienced the variation of pressure or electromagnetic property.System judges the position or the moving direction of nib thus.Its shortcoming is: clipboard is made complicated, uses limitation big, and input precision is lower, is difficult to make big clipboard, can't realize input etc. on projection screen.
The objective of the invention is, a kind of electronic writing device that does not need special clipboard is provided, be implemented in write on any plane with any display screen on, comprise and directly write input and pen control on any display screen, make electronic writing more flexibly, effectively, and reduce the device fabrication difficulty.
To achieve these goals, method of the present invention is, adopt a position of waiting to import impact point than the hot spot indication, introducing one or one group of camera head takes in real time and writes the image that comprises described luminous point, by processing to the camera head output signal, discern above-mentioned luminous point, and parse the coordinate of luminous point, and then follow the tracks of its movement locus.Here said image is made a general reference two peacekeeping one dimension images, when a plurality of camera heads are worked simultaneously, a plurality of one dimension images is carried out the coordinate that Combined Treatment just may calculate luminous point.
Because adopt said method, the present invention than the advantage of prior art and product is: 1, do not need special clipboard or special display screen just can carry out handwriting input or replace Genius mouse to carry out work, improved the dirigibility of use.2, can on projection screen, carry out handwriting input, this be prior art can't realize.3, manufacture difficulty reduces.4, be easy to realize large-area clipboard.5, be easy to improve input precision.
First embodiment of the present invention is the direct writing system of display screen as shown in Figure 1.Wherein 1 is computer display, and it can be the screen of the display of any type.The 2nd, camera head, it can be installed on the special support, also can be installed on computing machine or its a certain peripherals.Can comprise that wherein vision signal is handled, compressor circuit, its output signal is input into computing machine.The 3rd, light pen wherein has power supply and light source, and the design of light pen makes that power supply disconnects when it is unsettled, and when light pen nib contact screen, power connection, light source are opened, and at the nib place or the stronger luminous point of nib place screen surface formation.The switch of power supply can be realized by a pressure-sensitive switch, also can realize by other modes.As required, light pen can also be designed to decide its luminosity by the nib pressure.Camera head 2 is taken the dynamic image that comprises display screen surface in real time, and its signal output is treated by interface input computing machine.Can find the solution the instantaneous coordinate position of luminous point on screen that light pen forms by the processing of computer software, further obtain its movement locus.Cooperate the actual person's handwriting of demonstration on screen in real time with software, thereby reach the effect that nature is write.Light source in the light pen can adopt light emitting semiconductor device, as light emitting diode or semiconductor laser.Can adopt simple algorithm to realize to the identification of luminous point, because measured data shows, after the light line focus of light emitting diode or the luminous point that forms of the light beam of semiconductor laser, its brightness intensity in a certain spectrum segment at least is far longer than the common display luminous intensity.
Second embodiment of the present invention is similar to first embodiment, is characterized in that related screen is a projection screen, and the light pen power supply is a semiconductor laser, can penetrate unidirectional light beam.The light beam of light pen forms luminous point on projection screen, system calculates the position coordinates at luminous point place according to the image of camera output.The user can import and control from afar like this.
More than among two kinds of embodiment, additional switch can be set on light pen, as keyswitch, be used for changing the characteristic of light output, thereby output more control information.Its application can be to replace existing apparatus to write input, or replaces Genius mouse to carry out work.In addition, if camera head is pointed to desktop, just can realize large-area clipboard.
The 3rd embodiment of the present invention is a light pen writing system that camera head has been installed on display outer frame.In this system, adopted two to eight camera heads to be fixedly installed in diverse location.In order to simplify hardware, can adopt one dimension photoelectronic imaging device, as single-row CCD device.The decision quantity of camera head and the cardinal rule of installation site are: the every bit on the part of being concerned about on whole screen or the screen all must be in effective imaging scope of more than one camera head simultaneously, and luminous point and these camera heads are not on the same vertical plane of display screen.Simultaneously, should to make the expansion direction at its maximum visual angle be direction along screen surface in the placement of each camera.More than the purpose of Kao Lving is to make the calculating of light spot position have uniqueness.Used light pen and embodiment one are similar.
The 4th embodiment of the present invention is a kind of writing function portable computer of screen that has.As shown in Figure 2.Among the figure, the 1st, machine body, the 2nd, display screen, the 3rd, camera.Camera 3 is installed in the machine body part side away from display, and makes that display screen is completely contained within the viewfinder range of camera when operate as normal.Light pen and embodiment one are similar.
Embodiment four described methods also can be applied to the ordinary desktop computing machine, at this moment camera head can be installed on the keyboard.
Claims (9)
1. information input system that is used for to computing machine input writing handwriting information or control information operation, it is characterized in that: adopt a luminous point to come the indicating target point, introduce one and can penetrate light pencil or most advanced and sophisticated can luminous pen shaped arrangement produce required luminous point, adopt the photoelectronic imaging device to obtain luminous point position information and find the solution the coordinate of impact point through signal Processing.
2. information input system according to claim 1 is characterized in that: write and the control information input operation is carried out on the computer display surface.
3. according to claim 1,2 described information input systems is characterized in that: used one group of one dimension photoelectronic imaging device to obtain luminous point information on coming from different directions, and all output signal Combined Treatment are calculated the light spot position coordinate.
4. one kind is supported in the computer system of writing on the display screen with the control information input, and it is characterized in that: it adopts claim 1, and 2 described information input systems carry out the input of written handwriting information or control information operation.
5. computer system according to claim 4, it is characterized in that: it adopts claim 1,3 described input systems, and the photoelectronic imaging device is mounted on the display outer frame.
6. computer system according to claim 4, it is characterized in that: camera head is mounted on computing machine or its a certain peripheral components, and the sensing display screen, described light pen can change luminous intensity according to the suffered pressure of nib simultaneously.
7. according to claim 4,6 described computer systems, it is characterized in that: it is a kind of portable computer, and camera head is its main part to be installed away from display one side, and its display screen when work can be in the viewfinder range of camera head fully.
8. computer system according to claim 4 is characterized in that: described display screen is a projection screen, and light pen is light source with the semiconductor laser, can send thin unidirectional light beam.
9. a display is characterized in that, the more than one photoelectronic imaging device that points to display screen is from different directions arranged on its housing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114502 CN1294336A (en) | 1999-10-21 | 1999-10-21 | Pen writing and input system for computer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 99114502 CN1294336A (en) | 1999-10-21 | 1999-10-21 | Pen writing and input system for computer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1294336A true CN1294336A (en) | 2001-05-09 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 99114502 Pending CN1294336A (en) | 1999-10-21 | 1999-10-21 | Pen writing and input system for computer |
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| Country | Link |
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| CN (1) | CN1294336A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350364C (en) * | 2001-12-21 | 2007-11-21 | 西门子公司 | Device for detecting and displaying movements |
| CN101872255A (en) * | 2009-04-25 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Infrared handwritten pen and handwritten input device with same |
| CN103744541A (en) * | 2014-01-26 | 2014-04-23 | 上海鼎为电子科技（集团）有限公司 | Writing pen, electronic terminal and writing system |
| CN109254694A (en) * | 2018-11-20 | 2019-01-22 | 珠海格力电器股份有限公司 | A kind of flexibility board and mobile terminal system |
-
1999
- 1999-10-21 CN CN 99114502 patent/CN1294336A/en active Pending
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100350364C (en) * | 2001-12-21 | 2007-11-21 | 西门子公司 | Device for detecting and displaying movements |
| CN101872255A (en) * | 2009-04-25 | 2010-10-27 | 鸿富锦精密工业（深圳）有限公司 | Infrared handwritten pen and handwritten input device with same |
| CN103744541A (en) * | 2014-01-26 | 2014-04-23 | 上海鼎为电子科技（集团）有限公司 | Writing pen, electronic terminal and writing system |
| CN103744541B (en) * | 2014-01-26 | 2017-07-04 | 上海鼎为电子科技（集团）有限公司 | Lettering pen, electric terminal and writing system |
| CN109254694A (en) * | 2018-11-20 | 2019-01-22 | 珠海格力电器股份有限公司 | A kind of flexibility board and mobile terminal system |
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