CN101329613A - Virtual keyboard device - Google Patents
Virtual keyboard device Download PDFInfo
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- CN101329613A CN101329613A CNA2008100297811A CN200810029781A CN101329613A CN 101329613 A CN101329613 A CN 101329613A CN A2008100297811 A CNA2008100297811 A CN A2008100297811A CN 200810029781 A CN200810029781 A CN 200810029781A CN 101329613 A CN101329613 A CN 101329613A
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- virtual keyboard
- keyboard device
- guide plate
- led
- light source
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Abstract
The invention provides a virtual keyboard device which comprises a processing unit, a projection unit and a sensing unit. The projection unit is an LED backlight module, particularly an LED backlight module provided with a plurality of LEDs which are arranged in array, every three adjacent LEDs are distributed equidistantly and every LED is provided with a light guide plate taking the shape of an equilateral hexagon. Therefore, in a unit area, the LED number of the virtual keyboard device is reduced, and the LEDs are matched with the light guide plate of the structure, thus rendering the light much evener and fulfilling the same effect in the prior art which adopts lots of LEDs. Heat generated is less due to the decrease of light sources and the distance between LEDs are larger, and therefore the generated heat is easier to dissipate and the service life of the LEDs is prolonged.
Description
Technical field
The present invention relates to a kind of dummy keyboard, relate to a kind of dummy keyboard of projection specifically, so that need the electronic product of keyboard to avoid using physical keyboard.
Background technology
Existing electronic product is all imported by physical keyboard in input data or other purposes, for example, and electronic products such as computer, personal digital assistant (Personal Digital Assistant is called for short PDA) or mobile phone.But these physical keyboard all need die sinking to manufacture during fabrication, cause the material to making keyboard to cause waste, and along with popularizing of computer, this phenomenon is more troubling.In addition, existing physical keyboard also takies a large amount of area of desktop, and it is also cumbersome to receive whole existing physical keyboard.Physical keyboard is received dust easily in addition, also is a undisputable fact, and for example for the dustfree environment such as laboratory, the dust that physical keyboard is gathered is a trouble in cleaning for some.
For addressing the above problem, existing dealer proposes a kind of virtual keyboard device of projection, and for example U.S. Pat 6650318, publication number are this projection type virtual keyboards all on the books such as Chinese invention patent application of CN1479191A.Mostly this keyboard be by light emitting source, with the dummy keyboard projection in a plane.When the user operates certain button of dummy keyboard, give a processing unit by a sensing element sensing and transmission information, data analysis by this processing unit, judge is which button is operated, in view of the above, make computing machine or PDA, counter, equipment such as mobile phone produce character, numeral or the instruction corresponding to this button, thereby can reach the effect identical with physical keyboard.
Existing projection dummy keyboard, to project dummy keyboard, this often needs a large amount of LED to most employing LED, and the equal dense arrangement of these LED, to reach needed luminance brightness of projection dummy keyboard and uniformity coefficient as light source.But, be that meeting increases cost, consumption increases electric power so on the one hand; Be that overstocked easy array makes the heat of its generation be difficult to shed on the other hand, reduce serviceable life.
Summary of the invention
Purpose of the present invention aims to provide a kind of new projection virtual keyboard device, to address the above problem.
In order to achieve the above object, the present invention has adopted following technical scheme: a kind of virtual keyboard device, include projecting cell, sensing cell and processing unit, described projecting cell has a plurality of unit light source, reaches a light guide plate that is provided with around each unit light source, described unit light source is arranged in array, and every three adjacent unit light sources equidistantly distribute.
Projecting cell among the present invention has a plurality of unit light source, and the unit light source is LED in an embodiment, and these LED become array arrangement.Each LED cooperates a light guide plate, and this light guide plate is an equilateral hexagonal structure, and exiting surface is a parabolic surface.It is more even to help light, to reach drop shadow effect preferably.Also be provided with a diffusing surface in addition at the lower position of light guide plate, in order to the light that will penetrate light guide plate via the diffusing surface diffusion to reach the good light extraction efficiency of projecting cell.
Certainly, LED can be RGB LED, can blend the light of different colours like this according to different situations.Therefore, in unit area, the LED quantity among the present invention reduces, and cooperates the light guide plate of said structure, so that light is more even, reaches the identical effect with a large amount of LED of employing of the prior art.
Because the minimizing of light emitting source, the heat of generation reduces, and because the spacing distance between the LED becomes big, makes it produce heat and shed easily, promotes serviceable life.
In sum, this dummy keyboard avoids cost compared to prior art to be increased, without detriment to serviceable life.
Description of drawings
Also the present invention will be described in detail in conjunction with the embodiments and description hereinafter with reference to accompanying drawing:
Fig. 1 is the synoptic diagram that the present invention is applied to computing machine;
Fig. 2 is that LED arranges and the structural representation of light guide plate in the projecting cell of the present invention;
Fig. 3 is the structural drawing of light guide plate of the present invention, and this figure can observe the structure of light guide plate exiting surface.
Embodiment
About the present invention and other technology contents, characteristics and effect, in following cooperation three DETAILED DESCRIPTION OF THE PREFERRED with reference to the accompanying drawings, can know to present.
Before the present invention is described in detail, be noted that in the following description content similarly assembly is to represent with identical numbering.
Fig. 1 is the synoptic diagram that the present invention is applied to computing machine.See also Fig. 1, the present invention includes a projecting cell 200, and a sensing cell 21, a processing unit (figure does not show) and a character show (ScalarIC) unit (figure does not show).Projecting cell 200 and this sensing cell 21 are arranged at computer screen curtain 20 lower positions, and wherein, projecting cell 200 can be projeced into a certain plane with dummy keyboard zone 23; This sensing cell 21 is in order to sensing and send sensing result to processing unit.
In the dummy keyboard mode of operation, the user can utilize finger or other objects " to press " button that is throwed in certain this dummy keyboard zone, the a certain zone that feasible finger or other objects block dummy keyboard, by being given this processing unit by these sensing cell 21 detections and transmission information, data analysis by this processing unit, judge is which button is operated, in view of the above, make character, numeral or the instruction of equipment generations such as computing machine or PDA, counter, mobile phone, thereby realize operation button corresponding to this button.
In a word, in the present embodiment, 21 result of detections of this sensing cell send information to processing unit via the usb signal line.This processing unit processes information also judge to be confirmed operated button, can send instruction and make a character display unit make display text on the display screen 20 of electronic product.
For the heat dissipation problem that reduces projecting cell 200 and reduce its power consumption, what the present invention was main is to provide a kind of projecting cell for virtual keyboard device.
In the projecting cell 200 in the present invention, every three adjacent equidistant difference of LED and all being centered on by corresponding light guide plate.Utilize this structure, reach and reduce LED quantity, solve the LED heat radiation, the purpose that cuts down the consumption of energy, certainly except above-mentioned structure, projecting cell also has other technical characterictics that can further address the above problem.Below have detailed description.
Fig. 2 is that LED arranges and the structural representation of light guide plate in the projecting cell of the present invention.See also Fig. 2, the projecting cell 200 among the present invention has the light guide plate 204 corresponding to a plurality of LED201～203.Described LED is arranged in array, and every three adjacent LED equidistantly distribute.Be equipped with a light guide plate 204 around each LED201～203,, and then can significantly reduce the quantity of the required use of LED in projecting cell 200 with the luminance brightness that increases LED201～203 and the uniformity coefficient of light.From depression angle, this light guide plate 204 is an equilateral hexagonal structure.Utilize the characteristic of equilateral hexagon structure, closely contact between each light guide plate 204 is so that the light that send LED201～203 is further even.
See also Fig. 3, observe from the side, the exiting surface 205 of this light guide plate 204 is a parabolic surface, utilizes the feature of parabolic surface, can further increase the uniformity coefficient of light.
In another embodiment of the present invention, present embodiment and the foregoing description are basic identical, different is that every three adjacent LED are respectively red LED 201, green LED 202, blue led 203, so that projecting cell can be launched the light of colored light or white.
Again in another embodiment of the present invention, present embodiment and the foregoing description are basic identical, different is, in the present embodiment, be positioned at this light guide plate below and be provided with as shown in Figure 3 a diffusing surface (DiffusedSurface) 206, in order to the light that will penetrate light guide plate via diffusing surface 206 diffusions and see through exiting surface 205 outgoing of light guide plate 204, so that projecting cell 200 reaches good light extraction efficiency.
To sum up described and consult Fig. 2, Fig. 3 as can be known, because the arrangement mode of unit light source led causes its quantity to reduce, so, the corresponding minimizing of the heat of generation, and, make it produce heat and shed easily, lifting serviceable life because the spacing distance between the LED becomes big.
Wherein, LED can be replaced by the unit light source that other are applicable to this projection one dummy keyboard zone.
The above, only for the present invention's preferred embodiment, when the scope that can not limit the invention process with this, promptly the content of putting down in writing according to claim of the present invention and description of the invention has generally been done simple equivalent and is changed and modify, and all still belongs within the claim of the present invention institute covering scope.In addition, summary part and title only are the usefulness that is used for assisting the patent document search, are not the interest field that is used for limiting the present invention.
Claims (7)
1. virtual keyboard device, include a projecting cell, it is characterized in that, described projecting cell has a plurality of unit light source, reaches a light guide plate that is provided with around each unit light source, described unit light source is arranged in array, and every three adjacent unit light sources equidistantly distribute.
2. virtual keyboard device according to claim 1 is characterized in that, described each light guide plate is an equilateral hexagonal structure, and closely connects each other, forms one cellular.
3. virtual keyboard device according to claim 1 is characterized in that, described every three adjacent unit light sources are red units light sources, green cell light source, blue cell light source.
4. virtual keyboard device according to claim 1 is characterized in that, described light guide plate exiting surface is parabolic surface.
5. virtual keyboard device according to claim 1 is characterized in that, described unit light source also has a diffusing surface, and it is positioned at the lower position of light guide plate.
6. virtual keyboard device according to claim 1 is characterized in that described unit light source and sensing element are arranged in the electronic product.
7. according to each described virtual keyboard device of claim 1-6, it is characterized in that described unit light source is LED.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100297811A CN101329613B (en) | 2008-07-24 | 2008-07-24 | Virtual keyboard device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2008100297811A CN101329613B (en) | 2008-07-24 | 2008-07-24 | Virtual keyboard device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101329613A true CN101329613A (en) | 2008-12-24 |
| CN101329613B CN101329613B (en) | 2010-09-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2008100297811A Expired - Fee Related CN101329613B (en) | 2008-07-24 | 2008-07-24 | Virtual keyboard device |
Country Status (1)
| Country | Link |
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| CN (1) | CN101329613B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105451052A (en) * | 2014-08-28 | 2016-03-30 | 鸿富锦精密工业（深圳）有限公司 | Virtual keyboard building method and system |
| CN106125062A (en) * | 2015-05-07 | 2016-11-16 | 通用汽车环球科技运作有限责任公司 | Laser radar with hexagon laser array |
-
2008
- 2008-07-24 CN CN2008100297811A patent/CN101329613B/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105451052A (en) * | 2014-08-28 | 2016-03-30 | 鸿富锦精密工业（深圳）有限公司 | Virtual keyboard building method and system |
| CN105451052B (en) * | 2014-08-28 | 2018-08-03 | 鸿富锦精密工业（深圳）有限公司 | Dummy keyboard method for building up and system |
| CN106125062A (en) * | 2015-05-07 | 2016-11-16 | 通用汽车环球科技运作有限责任公司 | Laser radar with hexagon laser array |
| US10114109B2 (en) | 2015-05-07 | 2018-10-30 | GM Global Technology Operations LLC | Lidar with hexagonal laser array |
| CN106125062B (en) * | 2015-05-07 | 2019-04-16 | 通用汽车环球科技运作有限责任公司 | Laser radar with hexagon laser array |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101329613B (en) | 2010-09-15 |
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Owner name: LITE-ON TECHNOLOGY (CHANGZHOU) CO., LTD. Free format text: FORMER OWNER: SILITEK ELECTRONIC (GUANGZHOU) CO., LTD. Effective date: 20131108 Owner name: GUANGBAO ELECTRIC UANGZHOU) CO., LTD. GUANGBAO SC Free format text: FORMER OWNER: GUANGBAO SCIENCE + TECHNOLOGY CO., LTD. Effective date: 20131108 |
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Free format text: CORRECT: ADDRESS; FROM: 510663 GUANGZHOU, GUANGDONG PROVINCE TO: 213166 CHANGZHOU, JIANGSU PROVINCE |
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Effective date of registration: 20131108 Address after: 213166 Wujin high tech Industrial Development Zone, Jiangsu Province, Yang Lake Road, No. 88 Patentee after: LITE-ON TECHNOLOGY (CHANGZHOU) CO., LTD. Patentee after: Lite-On Electronic (Guangzhou) Co., Ltd. Patentee after: Lite-On Technology Corporation Address before: 510663 Guangzhou science and Technology Development Zone, Guangzhou City, Guangdong Province Science City West Road, No. 25 Patentee before: Xuli Electronics (Guangzhou) Co., Ltd. Patentee before: Lite-On Technology Corporation |
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| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20100915 Termination date: 20170724 |
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| CF01 | Termination of patent right due to non-payment of annual fee |