CN101819501A - Device and electronic product for realizing virtual keyboard and implementation method thereof - Google Patents
Device and electronic product for realizing virtual keyboard and implementation method thereof Download PDFInfo
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- CN101819501A CN101819501A CN201010147171A CN201010147171A CN101819501A CN 101819501 A CN101819501 A CN 101819501A CN 201010147171 A CN201010147171 A CN 201010147171A CN 201010147171 A CN201010147171 A CN 201010147171A CN 101819501 A CN101819501 A CN 101819501A
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Abstract
The invention provides a device and an electronic product for realizing a virtual keyboard, and an implementation method thereof, which are applicable to the field of electronic technology. The device comprises a projection unit for projecting the image of the virtual keyboard; a ray detection unit for detecting and reflecting rays from two points so as to obtain the incidence angle of two corresponding reflected rays; and a processing unit for determining the input key assignments and outputting the key assignments according to the incidence angle of the reflected rays and the projected image of the virtual keyboard as well as the incidence angle of the two reflected rays obtained by the ray detection unit. In the embodiment of the invention, the processing unit determines and outputs the input key assignments according to the corresponding relationship between the incidence angle of the reflected rays and the key assignments at the projected image of the virtual keyboard as well as the incidence angle of the two reflected rays obtained by the ray detection unit; therefore, the invention can realize the virtual keyboard, which has a low hardware cost, and can be used in various electronic products with a request for information input.
Description
Technical field
The invention belongs to electronic technology field, relate in particular to a kind of device, electronic product and its implementation that realizes dummy keyboard.
Background technology
Now, people's work, life etc. be unable to do without various electronic products, and the electronic product majority all relates to information input, and because of area constraints the electronic product of more keys can't be set as mobile phone, PDA etc., have influenced the speed of user's input information; Also brought inconvenience and can't use the situation of physical keyboard because of restrictions such as environment to user's input information as others such as hospital, pharmaceutical factories.
For addressing these limitations, prior art provides a kind of device of dummy keyboard, by the keyboard projection arrangement dummy keyboard image is incident upon any body surface, the user directly on the surface of projection the dummy keyboard image of " touching " projection with input data, adopt camera head to take the keyboard area that projects, analyze again that the hand by the user that photographs hides and not covered image draws the virtual key of the dummy keyboard that the user touches.Adopt this technical scheme, need carry out the virtual key that complicated processing could be determined user's " touching " the image that photographs.
In sum, the existing technical scheme of dummy keyboard that realizes needs the high camera of image quality, and cost is than higher; And, need carry out complex calculations to the image that photographs and just can obtain key assignments input, complex calculation mean need be more powerful CPU support, like this, further increased manufacturing cost.
Summary of the invention
The purpose of the embodiment of the invention is intended to solve the problem that prior art exists, and a kind of device of realizing dummy keyboard is provided, and realization is simple, hardware cost is low.
The embodiment of the invention is achieved in that a kind of device of realizing dummy keyboard, comprising:
Projecting cell is used for projection and goes out the dummy keyboard image;
The light probe unit is used for surveying reflection ray from two points, obtains incidence angle of two corresponding reflected rays; And
Processing unit is used for the corresponding relation of each key assignments on the dummy keyboard image that incident angle and projection according to reflection ray go out, and the incident angle of two reflection rays obtaining of described light probe unit, determines input key assignments and output.
Another purpose of the embodiment of the invention is to provide a kind of electronic product that comprises the device of above-mentioned realization dummy keyboard.
Another purpose of the embodiment of the invention is to provide a kind of method that realizes dummy keyboard, and described method comprises the steps:
Projecting cell arrives arbitrary plane with the dummy keyboard image projecting;
The light probe unit is surveyed reflection ray from two points, obtains incidence angle of two corresponding reflected rays;
The corresponding relation of each key assignments on the dummy keyboard image that processing unit goes out according to the incident angle and the projection of reflection ray, and the incident angle of two reflection rays obtaining of light probe unit are determined input key assignments and output.
In embodiments of the present invention, go out the dummy keyboard image by the projecting cell projection, the corresponding relation of each key assignments on the dummy keyboard image that goes out according to the incident angle and the projection of reflection ray by processing unit again, and the incident angle of two reflection rays obtaining of light probe unit, determine input key assignments and output, realized a kind of device of realizing dummy keyboard, realization is simple, hardware cost is low, can be used for various electronic products that information input demand arranged, have wide range of applications.
Description of drawings
Fig. 1 is the structural representation of the device of the realization dummy keyboard that provides of prior art;
Fig. 2 is the synoptic diagram of position relation between the embodiment of the invention projecting cell, first angular transducer and second angular transducer that provide and dummy keyboard image;
Fig. 3 is the process flow diagram of the method for the realization dummy keyboard that provides of the embodiment of the invention.
Embodiment
In order to make purpose of the present invention, technical scheme and advantage clearer,, the present invention is further elaborated below in conjunction with drawings and Examples.Should be appreciated that specific embodiment described herein only in order to explanation the present invention, and be not used in qualification the present invention.
In embodiments of the present invention, go out the dummy keyboard image by the projecting cell projection, the corresponding relation of each key assignments on the dummy keyboard image that goes out according to the incident angle and the projection of reflection ray by processing unit again, and the incident angle of two reflection rays obtaining of light probe unit, determine input key assignments and output, realized a kind of device of realizing dummy keyboard.
Fig. 1 shows the structure of the device of the realization dummy keyboard that the embodiment of the invention provides, and for convenience of explanation, only shows the part relevant with the embodiment of the invention.
This device can be used to have the electronic product of information input demand, portable terminal such as mobile phone, PDA for example, and opertaing device etc., can be to run on the unit that software unit, hardware cell or software and hardware in these electronic products combine, also can be used as independently, suspension member be integrated in these electronic products or runs in the application system of these electronic products.The device of this realization dummy keyboard comprises projecting cell 101, light probe unit 102 and processing unit 103, wherein:
Projecting cell 101, projection go out the dummy keyboard image.
In embodiments of the present invention, projecting cell 101 arrives arbitrary plane with the dummy keyboard image projecting; Light probe unit 102 can adopt two angular transducers to realize, two eyes that are equivalent to the people, i.e. first angular transducer 1021 and second angular transducer 1022 are respectively obtained the incident angle of a reflection ray by first angular transducer 1021 and second angular transducer 1022; Hardware environment during according to practical application of at interval certain distance between first angular transducer 1021 and second angular transducer 1022, this distance, software environment etc. are definite.At interval distance is preferably half of dummy keyboard image width that projection goes out between first angular transducer 1021 and second angular transducer 1022.
Here, setting to projecting cell 101, first angular transducer 1021 and second angular transducer, 1022 positions does not have specific (special) requirements, the three can be on same straight line, can not exist yet, first angular transducer 1021 and second angular transducer 1022 can be in the both sides of projecting cell 101 also can be etc. in the same side, but first angular transducer 1021 and second angular transducer 1022 preferably are positioned at the both sides of projecting cell 101, and equidistantly distribute.Closing with the position among Fig. 2 below is example, promptly first angular transducer 1021 and second angular transducer 1022 preferably are positioned at the both sides of projecting cell 101, and equidistantly distribute, describe the corresponding relation of key assignments on the incident angle of two reflection rays that respectively obtain by first angular transducer 1021 and second angular transducer 1022 and the dummy keyboard image that projecting cell 101 projections go out in detail.Here, the definition incident angle is that the reflection ray that first angular transducer 1021 or second angular transducer 1022 detect projects to plane, dummy keyboard image place, after being the xy plane, with first angular transducer, 1,021 second angular transducers, 1022 place linear projections gained projection straight line angulation behind the xy plane, the incident angle of remembering the reflection ray that first angular transducer, 1021 detection reflection rays obtain is A, the incident angle of the reflection ray that second angular transducer, 1022 detection reflection rays obtain is B, when the user " knocks " difference " key ", two incident angle A, the combination of B is different.For example, when the user " knocked " key " Back Space ", incident angle was respectively A1, B1; When the user " knocked " key "～", incident angle was respectively A2, B2.Therefore, the key assignments of the incident angle of two reflection rays that obtain by two angular transducers on promptly can unique corresponding dummy keyboard.
Like this, after obtaining two incident angle A, B, the corresponding relation of each key assignments can determine that promptly the user " knocks " key assignments of input on the dummy keyboard image that is gone out according to the incident angle and the projection of reflection ray by processing unit 103.Certainly, after processing unit 103 is determined input key assignments and output, continue the incident angle of two reflection rays that first angular transducer 1021 and second angular transducer 1022 are obtained and handle, determine the key assignments of the next input of user.
Further, in order to handle the unfixed situation of vertical range of the plane that receives the dummy keyboard image that projecting cell 101 projections go out and 101 of projecting cells, as a preferred embodiment of the present invention, the device of realization dummy keyboard also comprises,
In embodiments of the present invention, when concerning that probe unit 102 " knocks " " key " on the dummy keyboard image at the user, the incident angle of two reflection rays that detect from two points is defined as the incident angle of a pair of reflection ray.When specific implementation, for the accuracy that guarantees to calibrate, can " knock " key of four corner correspondences of dummy keyboard by the dummy keyboard image that projection goes out by preset order by the user, obtain the incident angle of a pair of reflection ray of each key correspondence by range calibration unit 104 according to light probe unit 102.Again by the incident angle of these four pairs of reflection rays that obtain and the corresponding relation of four preset key, utilize the triangular form principle, the base is the distance of two sensors, and two angles of incidence of light are promptly known two base angles, has determined that two base angles, a base just can determine a triangular form.Then, can calculate the relative position of four corners of the dummy keyboard image that projection goes out by four triangles determining, promptly obtain the size of the dummy keyboard image that projection goes out, further can further determine incident angle A, the B of each key correspondence again according to the position relation of each key on the dummy keyboard.Like this, just can calibrate the corresponding relation of each key assignments on the incident angle of reflection ray and the dummy keyboard image that projection goes out.
Certainly, in order to realize calibration, minimum dummy keyboard image that need be gone out by projection by the user " knocks " any two keys on the dummy keyboard by preset order, obtain these two keys incident angle of corresponding a pair of reflection ray respectively by range calibration unit 104 according to light probe unit 102, utilize above-mentioned triangular form principle again, and the position relation of each key can further be determined to realize incident angle A, the B of each key correspondence on the dummy keyboard image that projection goes out calibrating on the dummy keyboard.
In order to guarantee that the dummy keyboard image that projection goes out is regular, as another preferred embodiment of the present invention, realize that the device of dummy keyboard also comprises,
Projection ladder type alignment unit 105, the dummy keyboard image that projecting cell 101 projections are gone out is calibrated to regular shape, can adopt existing ladder type correcting device to realize.
Fig. 3 shows the flow process of the method for the realization dummy keyboard that the embodiment of the invention provides, and details are as follows:
In step S301, projecting cell 101 arrives arbitrary plane with the dummy keyboard image projecting;
In step S302, light probe unit 102 is surveyed reflection ray from two points, obtains incidence angle of two corresponding reflected rays;
In step S303, the corresponding relation of each key assignments on the dummy keyboard image that processing unit 103 goes out according to the incident angle and the projection of reflection ray, and the incident angle of two reflection rays obtaining of light probe unit 102 are determined input key assignments and output.
In embodiments of the present invention, two points of light detecting unit 102 preferably are positioned at the both sides of projecting cell 101, and equidistantly distribute, and the structure of the device of realization dummy keyboard, processing repeat no more as mentioned above.
Further, in order to handle the unfixed situation of vertical range of 101 of the plane that receives the dummy keyboard image that projecting cell 101 projections go out and projecting cells, as a preferred embodiment of the present invention, before step S302, the method of this realization dummy keyboard also comprises the range calibration step, is specially:
The incident angle of two reflection rays that obtain by light probe unit 102 and the corresponding relation of a preset key of dummy keyboard, and default calibration rule, the corresponding relation of each key assignments on the incident angle of calibration reflection ray and the dummy keyboard image that projection goes out, its specific implementation repeats no more as mentioned above.
In order to guarantee that the dummy keyboard image that projection goes out is regular, as another preferred embodiment of the present invention, after step S301, before the step S302, the method for this realization dummy keyboard also comprises the ladder type calibration steps, is specially:
The dummy keyboard image that projecting cell 101 projections are gone out is calibrated to regular shape.
Certainly, if the method for this realization dummy keyboard also comprised the range calibration step before step S302, then before this range calibration step, carry out the dummy keyboard image that projecting cell 101 projections go out is calibrated to the ladder type calibration steps of regular shape.
One of ordinary skill in the art will appreciate that, realize that all or part of step in the foregoing description method is to instruct relevant hardware to finish by program, described program can be in being stored in a computer read/write memory medium, described storage medium is as ROM/RAM, disk, CD etc.
In embodiments of the present invention, go out the dummy keyboard image by the projecting cell projection, the corresponding relation of each key assignments on the dummy keyboard image that goes out according to the incident angle and the projection of reflection ray by processing unit again, and the incident angle of two reflection rays obtaining of light probe unit, determine input key assignments and output, realized a kind of device of realizing dummy keyboard, realization is simple, hardware cost is low, can be used for various electronic products that information input demand arranged, have wide range of applications.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being done within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (10)
1. a device of realizing dummy keyboard is characterized in that, described device comprises:
Projecting cell is used for projection and goes out the dummy keyboard image;
The light probe unit is used for surveying reflection ray from two points, obtains incidence angle of two corresponding reflected rays; And
Processing unit is used for the corresponding relation of each key assignments on the dummy keyboard image that incident angle and projection according to reflection ray go out, and the incident angle of two reflection rays obtaining of described light probe unit, determines input key assignments and output.
2. device as claimed in claim 1 is characterized in that, described light detecting unit comprises first angular transducer and second angular transducer.
3. device as claimed in claim 2 is characterized in that, described first angular transducer and second angular transducer are positioned at the both sides of described projecting cell, and equidistantly distribute.
4. device as claimed in claim 1 is characterized in that, described device also comprises:
The range calibration unit, the corresponding relation that is used at least two preset key on the incident angle of at least two pairs of reflection rays obtaining by described light probe unit and the dummy keyboard, and the position of each key concerns on the dummy keyboard, the corresponding relation of each key assignments on the incident angle of calibration reflection ray and the dummy keyboard image that projection goes out.
5. device as claimed in claim 1 is characterized in that, described device also comprises:
Projection ladder type alignment unit is used for the dummy keyboard image that described projecting cell projection goes out is calibrated to regular shape.
6. electronic product that comprises the device of each described realization dummy keyboard of claim 1 to 5.
7. a method that realizes dummy keyboard is characterized in that, described method comprises the steps:
Projecting cell arrives arbitrary plane with the dummy keyboard image projecting;
The light probe unit is surveyed reflection ray from two points, obtains incidence angle of two corresponding reflected rays;
The corresponding relation of each key assignments on the dummy keyboard image that processing unit goes out according to the incident angle and the projection of reflection ray, and the incident angle of two reflection rays obtaining of light probe unit are determined input key assignments and output.
8. method as claimed in claim 7 is characterized in that, two points of described light detecting unit are positioned at the both sides of described projecting cell, and equidistantly distribute.
9. as claim 7 or 8 described methods, it is characterized in that, survey reflection ray at described light probe unit from two points, obtain before the step of incidence angle of two corresponding reflected rays, described method also comprises:
The corresponding relation of at least two preset key on the incident angle of at least two pairs of reflection rays that obtain by the light probe unit and the dummy keyboard, and the position of each key concerns on the dummy keyboard, the corresponding relation of each key assignments on the incident angle of calibration reflection ray and the dummy keyboard image that projection goes out.
10. as claim 7 or 8 described methods, it is characterized in that, after described projecting cell arrives the step on arbitrary plane with the dummy keyboard image projecting, described light probe unit is surveyed reflection ray from two points, obtain before the step of incidence angle of two corresponding reflected rays, described method also comprises:
The dummy keyboard image that the projecting cell projection is gone out is calibrated to regular shape.
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| CN201010147171A CN101819501A (en) | 2010-04-09 | 2010-04-09 | Device and electronic product for realizing virtual keyboard and implementation method thereof |
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| CN201010147171A CN101819501A (en) | 2010-04-09 | 2010-04-09 | Device and electronic product for realizing virtual keyboard and implementation method thereof |
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| CN201010147171A Pending CN101819501A (en) | 2010-04-09 | 2010-04-09 | Device and electronic product for realizing virtual keyboard and implementation method thereof |
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Cited By (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102546935A (en) * | 2011-12-20 | 2012-07-04 | 上海电机学院 | Projection mobile phone utilizing light reflection and light sensing |
| CN102591464A (en) * | 2012-01-13 | 2012-07-18 | 吴岳忠 | Laser virtual keyboard |
| WO2012126193A1 (en) * | 2011-03-22 | 2012-09-27 | 中兴通讯股份有限公司 | Method and device for generating image keyboard |
| CN102841710A (en) * | 2011-05-09 | 2012-12-26 | 林宏宇 | Sensing method and device |
| CN102883034A (en) * | 2011-12-20 | 2013-01-16 | 上海电机学院 | Projection mobile phone using light induction and pressure induction |
| CN103558948A (en) * | 2013-10-31 | 2014-02-05 | 中山大学 | Man-machine interaction method applied to virtual optical keyboard |
| CN103744607A (en) * | 2014-01-20 | 2014-04-23 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN104423608A (en) * | 2013-08-31 | 2015-03-18 | 侯明鑫 | Light based projection keyboard |
| CN105468209A (en) * | 2014-09-25 | 2016-04-06 | 硕擎科技股份有限公司 | Virtual two-dimensional positioning module of input device and virtual input device |
| WO2017041506A1 (en) * | 2015-09-12 | 2017-03-16 | 北京佳拓思科技有限公司 | Light projection keyboard and mouse assembly |
| CN107797748A (en) * | 2016-09-05 | 2018-03-13 | 深圳光启合众科技有限公司 | Dummy keyboard input method and device and robot |
| CN108008907A (en) * | 2017-12-27 | 2018-05-08 | 上海传英信息技术有限公司 | A kind of input equipment and input method based on dummy keyboard |
| CN108282682A (en) * | 2018-02-08 | 2018-07-13 | 深圳创维－Rgb电子有限公司 | Television set and TV set control method |
| EP3438741A1 (en) * | 2017-07-31 | 2019-02-06 | Samsung Electronics Co., Ltd. | Projector comprising a sub-wavelength nanostructure for generating structured light |
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Cited By (26)
| Publication number | Priority date | Publication date | Assignee | Title |
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| WO2012126193A1 (en) * | 2011-03-22 | 2012-09-27 | 中兴通讯股份有限公司 | Method and device for generating image keyboard |
| CN102841710B (en) * | 2011-05-09 | 2016-01-27 | 林卓毅 | sensing method and device |
| CN102841710A (en) * | 2011-05-09 | 2012-12-26 | 林宏宇 | Sensing method and device |
| US9606673B2 (en) | 2011-05-09 | 2017-03-28 | Cho-Yi Lin | Method and device for sensing a position of an object |
| US9012828B2 (en) | 2011-05-09 | 2015-04-21 | Cho-Yi Lin | Method and device for sensing a position of an object |
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| CN102883034A (en) * | 2011-12-20 | 2013-01-16 | 上海电机学院 | Projection mobile phone using light induction and pressure induction |
| CN102546935A (en) * | 2011-12-20 | 2012-07-04 | 上海电机学院 | Projection mobile phone utilizing light reflection and light sensing |
| CN102591464A (en) * | 2012-01-13 | 2012-07-18 | 吴岳忠 | Laser virtual keyboard |
| WO2013104219A1 (en) * | 2012-01-13 | 2013-07-18 | 厦门飞沃移动通讯科技有限公司 | Laser virtual keyboard |
| CN102591464B (en) * | 2012-01-13 | 2014-12-10 | 厦门飞沃移动通讯科技有限公司 | Laser virtual keyboard |
| CN104423608A (en) * | 2013-08-31 | 2015-03-18 | 侯明鑫 | Light based projection keyboard |
| CN103558948A (en) * | 2013-10-31 | 2014-02-05 | 中山大学 | Man-machine interaction method applied to virtual optical keyboard |
| CN103744607A (en) * | 2014-01-20 | 2014-04-23 | 联想(北京)有限公司 | Information processing method and electronic equipment |
| CN103744607B (en) * | 2014-01-20 | 2017-08-29 | 联想(北京)有限公司 | A kind of information processing method and electronic equipment |
| CN105468209A (en) * | 2014-09-25 | 2016-04-06 | 硕擎科技股份有限公司 | Virtual two-dimensional positioning module of input device and virtual input device |
| WO2017041506A1 (en) * | 2015-09-12 | 2017-03-16 | 北京佳拓思科技有限公司 | Light projection keyboard and mouse assembly |
| CN107797748A (en) * | 2016-09-05 | 2018-03-13 | 深圳光启合众科技有限公司 | Dummy keyboard input method and device and robot |
| CN107797748B (en) * | 2016-09-05 | 2020-07-21 | 深圳光启合众科技有限公司 | Virtual keyboard input method and device and robot |
| US11042243B2 (en) | 2017-07-31 | 2021-06-22 | Samsung Electronics Co., Ltd. | Meta projector and electronic apparatus including the same |
| EP3438741A1 (en) * | 2017-07-31 | 2019-02-06 | Samsung Electronics Co., Ltd. | Projector comprising a sub-wavelength nanostructure for generating structured light |
| US11449178B2 (en) | 2017-07-31 | 2022-09-20 | Samsung Electronics Co., Ltd. | Meta projector and electronic apparatus including the same |
| US10922828B2 (en) | 2017-07-31 | 2021-02-16 | Samsung Electronics Co., Ltd. | Meta projector and electronic apparatus including the same |
| CN108008907A (en) * | 2017-12-27 | 2018-05-08 | 上海传英信息技术有限公司 | A kind of input equipment and input method based on dummy keyboard |
| CN108282682A (en) * | 2018-02-08 | 2018-07-13 | 深圳创维－Rgb电子有限公司 | Television set and TV set control method |
| CN108282682B (en) * | 2018-02-08 | 2020-10-30 | 深圳创维－Rgb电子有限公司 | Television and television control method |
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Application publication date: 20100901 |