CN110780747A - Keyboard with a keyboard body - Google Patents
Keyboard with a keyboard body Download PDFInfo
- Publication number
- CN110780747A CN110780747A CN201911104023.6A CN201911104023A CN110780747A CN 110780747 A CN110780747 A CN 110780747A CN 201911104023 A CN201911104023 A CN 201911104023A CN 110780747 A CN110780747 A CN 110780747A
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- CN
- China
- Prior art keywords
- key
- light
- circuit board
- keyboard
- optical camera
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- 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.)
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Classifications
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
- G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
- G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
- G06F3/0202—Constructional details or processes of manufacture of the input device
-
- H—ELECTRICITY
- H03—ELECTRONIC CIRCUITRY
- H03K—PULSE TECHNIQUE
- H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
- H03K17/94—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated
- H03K17/941—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector
- H03K17/943—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the way in which the control signals are generated using an optical detector using a plurality of optical emitters or detectors, e.g. keyboard
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- Engineering & Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Human Computer Interaction (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Input From Keyboards Or The Like (AREA)
Abstract
The invention discloses a keyboard, wherein the keyboard comprises: a key mounting base; the circuit board mounting seat is connected with the key mounting seat; the circuit board is arranged on the circuit board mounting seat; the at least one light emitter is arranged on the circuit board mounting seat; the optical camera and the light emitter are arranged on the circuit board mounting seat at intervals, and the optical camera and the light emitter are electrically connected with the circuit board; and the plurality of keys are arranged on the key mounting seat, each key can move up and down relative to the key mounting seat and has an initial position and a pressing position, the keys are positioned in the light coverage area of the light emitter, the light emitter is used for indicating the positions of the keys, and when one key is positioned in the initial position or the pressing position, the optical camera collects the bright spot positions of the keys. The keyboard has simple structure and low cost.
Description
Technical Field
The invention relates to the technical field of input equipment, in particular to a keyboard.
Background
The related art optical switch keyboard is provided with a plurality of light emitters and a plurality of infrared receiving tubes, and a light path provided between each light emitter and each infrared receiving tube. And the light path is also provided with a key, and the key can block the light path or conduct the light path when pressed, thereby realizing the key function. However, the existing light emitter and infrared receiving tube are both directly arranged on the key mounting seat, the corresponding circuit board is directly arranged on the key mounting seat, and each key is correspondingly provided with one light emitter and one infrared receiving tube, so that the structure of the keyboard is complex.
The above is only for the purpose of assisting understanding of the technical solutions of the present application, and does not represent an admission that the above is prior art.
Disclosure of Invention
The invention mainly aims to provide a keyboard, aiming at simplifying the structure of the keyboard and saving the cost.
In order to achieve the above object, the present invention provides a keyboard, comprising:
a key mounting base;
the circuit board mounting seat is connected with the key mounting seat;
the circuit board is arranged on the circuit board mounting seat;
the at least one light emitter is arranged on the circuit board mounting seat and is electrically connected with the circuit board;
the optical camera is arranged on the circuit board mounting seat and is electrically connected with the circuit board, and the optical camera and the light emitter are arranged on the circuit board mounting seat at intervals; and
the plurality of keys are arranged on the key installation seat, each key can move up and down relative to the key installation seat and has an initial position and a pressing position, the keys are positioned in the light coverage area of the light emitter, the light emitter is used for indicating the positions of the keys, and when one key is positioned at the initial position or the pressing position, the optical camera collects the bright spot positions of the keys.
Optionally, the key mounting base has first surface and the second surface that sets up relatively, the second surface is located the light is covered the region, the key mounting base is equipped with a plurality of through-holes that run through the first surface with the second surface, each the button correspondence is installed in one in the through-hole, when one the button is located when pressing the position, the button at least part protrusion in the second surface is located the light is covered the region, the button reflection the light that the light emitter sent extremely optical camera, optical camera gathers the bright spot position of button.
Optionally, each of the keys includes a base and a pressing shaft capable of moving up and down relative to the base, the base is embedded in one of the through holes and provided with a mounting hole, at least part of the pressing shaft is inserted into the mounting hole, and when the pressing shaft is pressed, the pressing shaft protrudes out of the second surface and is located in the light coverage area.
Optionally, the pressing shaft is provided with a light reflecting portion, and when the pressing shaft is pressed, the light reflecting portion reflects light of the light emitter and is received by the optical camera.
Optionally, the circuit board mounting seat is disposed on a side surface of the key mounting seat, the light emitter and the optical camera are both disposed adjacent to the second surface, and the light coverage area is formed on the second surface.
Optionally, one of the base and the pressing shaft is provided with a sliding block, the other of the base and the pressing shaft is provided with a sliding groove, and the pressing shaft can move up and down relative to the base through the matching of the sliding block and the sliding groove.
Optionally, the light emitter includes a light source and a lens disposed on a light exit surface of the light source, and the lens is configured to convert light emitted by the light source into a line light source, where the line light source is parallel to the second surface and forms the light coverage area.
Optionally, the optical camera includes a camera sensor, and the camera sensor is used for collecting the bright spot position of the pressing shaft.
Optionally, the optical camera further includes a filter disposed on the camera sensor.
Optionally, the optical camera and the light emitter are arranged on the same surface of the circuit board mounting seat at intervals.
The keyboard comprises a key mounting seat, a circuit board, at least one light emitter, at least one optical camera and a plurality of keys, wherein the light emitter and the optical camera are arranged on the circuit board mounting seat at intervals and are electrically connected with the circuit board, the circuit board mounting seat is connected with the key mounting seat, the light emitter and the optical camera are separately arranged from the key mounting seat, the circuit board does not need to be arranged on the key mounting seat, and the integral structure is simplified. In addition, the key mounting seat is located to a plurality of buttons, the button can reciprocate and have initial position and press the position for the key mounting seat, a plurality of buttons are located the light coverage area of light emitter, the light emitter is used for instructing the position of a plurality of buttons, when a button is located initial position or presses the position, the light spot position of button is gathered to the optical pick-up head, thereby realize the keyboard function, so reduced the quantity of light emitter, and need not to adopt infrared receiver tube, greatly reduced keyboard's cost improves reaction efficiency.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.
FIG. 1 is a schematic partial structural diagram of a keyboard according to an embodiment of the present invention;
FIG. 2 is a schematic view of the keyboard of FIG. 1 from another perspective;
FIG. 3 is a schematic diagram of a partially exploded view of the keyboard of FIG. 2;
FIG. 4 is an enlarged schematic view of the structure at A in FIG. 3;
FIG. 5 is an exploded view of the key of the present invention;
fig. 6 is an exploded view of the key of fig. 5 from another perspective.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In the present invention, unless otherwise expressly stated or limited, the terms "connected," "secured," and the like are to be construed broadly, and for example, "secured" may be a fixed connection, a removable connection, or an integral part; can be mechanically or electrically connected; they may be directly connected or indirectly connected through intervening media, or they may be connected internally or in any other suitable relationship, unless expressly stated otherwise. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
In addition, the descriptions related to "first", "second", etc. in the present invention are only for descriptive purposes and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, technical solutions between various embodiments may be combined with each other, but must be realized by a person skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should not be considered to exist, and is not within the protection scope of the present invention.
The present invention provides a keyboard 100, and the keyboard 100 is mainly an optical switch keyboard.
Referring to fig. 1 and 2, in an embodiment of the present invention, the keyboard 100 includes:
a key mounting base 10;
a circuit board mounting base 20 connected to the key mounting base 10;
a circuit board 60 provided on the circuit board mounting base 20;
at least one light emitter 30 disposed on the circuit board mounting base 20 and electrically connected to the circuit board 60;
at least one optical camera 40 disposed on the circuit board mounting base 20 and electrically connected to the circuit board 60, wherein the optical camera 40 and the light emitter 30 are disposed on the circuit board mounting base 20 at intervals; and
the plurality of keys 50 are arranged on the key mounting base 10, each key 50 can move up and down relative to the key mounting base 10 and has an initial position and a pressing position, the plurality of keys 50 are positioned in the light coverage area of the light emitter 30, the light emitter 30 is used for indicating the positions of the plurality of keys 50, and when one key 50 is positioned at the initial position or the pressing position, the optical camera 40 collects the bright spot positions of the keys 50.
In the present application, the key mounting base 10 is mainly used for mounting the plurality of keys 50, and the key mounting base 10 is rectangular, but may have other structures such as circular arc in other embodiments. The material for preparing the material can be plastic. For example: polycarbonate plastic or polystyrene plastic, etc. Of course, in order to make the keyboard have the functions of explosion-proof, dust-proof and water-proof, the key mounting seat 10 can also be made of metal material.
The circuit board mounting base 20 is mainly used for mounting the light emitter 30 and the optical camera 40, and the circuit board mounting base 20 is connected to the key mounting base 10, and the connection mode may be a fixed connection mode or a detachable connection mode, such as a fixed connection mode of gluing or welding, or a detachable connection mode of a screw, a bolt, or a buckle, and is not limited herein.
While the light emitter 30 is mainly used for emitting light signals, the light emitter 30 may be a laser or a light emitting LED (LED lamp, such as a single color LED lamp, a dual color LED lamp, a RGB three-color LED lamp) or the like. When each key 50 is in the pressed position, at least a part of the key 50 is located in the light covered area, the light irradiated on the key 50 is blocked and reflected, and the optical camera 40 collects the position of the bright point of the key 50. Specifically, when the keys 50 are not pressed, each key 50 receives light emitted by the light emitter 30 and reflects the light to the optical camera 40, the optical camera 40 collects bright spot positions emitted by the keys 50 at different positions, after a certain key 50 is pressed, the keys 50 move down to block the light path, the optical camera 40 does not collect the bright spot positions at the keys 50, and the positions where the keys 50 are pressed are identified by obtaining the bright spot positions of the keys 50 at the positions, so that the functions of the keys 50 are realized; or when the key 50 is not pressed, the optical camera 40 cannot acquire the position of the bright point, after the key 50 is pressed, the key 50 moves downwards, the key 50 reflects the light emitted by the light emitter 30, and the optical camera 40 acquires the position of the bright point of the key 50, so that the function of the key 50 is realized.
The light emitter 30 and the optical camera 40 are disposed on the circuit board mounting base 20 at intervals, and may be disposed on the same surface of the circuit board mounting base 20 or on different surfaces, or the circuit board mounting base 20 is divided, one part is used for mounting the light emitter 30, the other part is used for mounting the optical camera 40, and the circuit board mounting base 20 is disposed at different positions of the key mounting base 10, so that the circuit board mounting base 20 is electrically conducted in a wired or wireless manner, and the two are all within the protection scope of the present patent.
Further, to save cost and simplify the overall structure, the optical camera 40 and the light emitter 30 are spaced apart from each other on the same surface of the circuit board mounting base 20.
The specific method for identifying the position of the pressed key 50 includes: after the optical camera 40 collects the bright spot position of the key 50, the bright spot position information is fed back to the microprocessor, the microprocessor transmits the bright spot position information to the upper computer, the upper computer receives the bright spot position information and performs image processing, and the mapping relation between the key position information on the key mounting base 10 stored in the system and the position information of the key 50 collected by the optical camera 40 is used for identifying the position of the key 50.
The number of the light emitters 30 and the number of the optical cameras 40 can be selected as required, and generally, the number of the light emitters 30 and the number of the optical cameras 40 are not greater than the number of the keys 50, the number of the light emitters 30 is set to enable the light to be irradiated to each key 50, and the number of the optical cameras 40 is set to enable the reflected light of each key 50 to be received, and is not particularly limited herein. In the embodiment of the present application, two light emitters 30 are adopted, and two light emitters 30 of one optical camera 40 are symmetrically arranged on two sides of the optical camera 40, so that a better light coverage area can be realized, and the optical camera 40 can better collect the positions of bright spots, thereby realizing the function of the key 50.
The keyboard 100 comprises a key mounting base 10, a circuit board mounting base 20, a circuit board 60, at least one light emitter 30, at least one optical camera 40 and a plurality of keys 50, wherein the light emitter 30 and the optical camera 40 are arranged on the circuit board mounting base 20 at intervals and are electrically connected with the circuit board 60, the circuit board mounting base 20 is connected with the key mounting base 10, the light emitter 30 and the optical camera 40 are arranged separately from the key mounting base 10, and the circuit board 60 is not required to be arranged on the key mounting base 10, so that the integral structure is simplified. In addition, a plurality of keys 50 are arranged on the key mounting base 10, the keys 50 can move up and down relative to the key mounting base 10 and have an initial position and a pressing position, the keys 50 are located in the light coverage area of the light emitter 30, the light emitter 30 is used for indicating the positions of the keys 50, when one key 50 is located at the initial position or the pressing position, the optical camera 40 collects the bright spot positions of the keys 50, so that the functions of the keyboard 100 are realized, the number of the light emitters 30 is reduced, an infrared receiving tube is not needed, the cost of the keyboard 100 is greatly reduced, and the reaction efficiency is improved.
Further, the key mounting base 10 is configured to mount a plurality of keys 50, in order to better implement the functions of the keyboard 100 and maintain the overall aesthetic property, the key mounting base 10 has a first surface 11 and a second surface 12 that are oppositely disposed, the second surface 12 is located in the light coverage area, the key mounting base 10 is provided with a plurality of through holes 10a that penetrate through the first surface 11 and the second surface 12, each key 50 is correspondingly mounted in one of the through holes 10a, when one key 10a is located in the pressing position, at least a part of the key 50 protrudes out of the second surface 12 and is located in the light coverage area, the key 50 reflects light emitted by the light emitter 30 to the optical camera 40, and the optical camera 40 collects bright spot positions of the keys 50.
In the embodiment of the present application, the first surface 11 and the second surface 12 are arranged in parallel, when the key 50 is in the initial position, the light path between the light emitter 30 and the optical camera 40 is blocked, that is, the light emitted by the light emitter 30 forms a light coverage area on the second surface 12, when any key 50 is in the initial position, the key 50 is not pressed, and the optical camera 40 cannot collect the bright point position. When the key 50 is at the pressing position, the key 50 emits the received light, and the optical camera 40 collects the position of the bright spot, so that the function of the key 50 is realized.
Of course, the first surface 11 may be located in the light coverage area of the light emitter 30, when a key 10a is located in the initial position, each key 50 is located in the light coverage area, the key 50 reflects the light emitted by the light emitter 30 to the optical camera 40, and the optical camera 40 collects the bright spot position. When a key 10a is located at the pressed position, the optical camera 40 cannot collect the position of the bright point, so as to realize the function of the key 50. Are intended to be within the scope of this patent.
The structure of the key 50 may be various, such as a mechanical key or a general key, in this application, in order to better implement the function of the key 50, please refer to fig. 5 and fig. 6, each of the keys 50 includes a base 51 and a pressing shaft 52 capable of moving up and down relative to the base 51, the base 51 is embedded in one of the through holes 10a and is provided with a mounting hole 51a, the pressing shaft 52 is at least partially inserted in the mounting hole 51a, and when the pressing shaft 52 is pressed, the pressing shaft 52 protrudes from the second surface 12 and is located in the light coverage area. A restoring structure, such as a spring or a torsion spring, may be disposed between the pressing shaft 52 and the base 51, and when the pressing shaft 52 is acted by an external force, the restoring structure can pass through the mounting hole 51a and protrude out of the second surface 12 to reflect the light emitted from the light emitter 30. When the external force disappears, the pressing shaft 52 can be automatically reset.
Further, in order to better reflect the light emitted from the light emitter 30 so that the reflected light is received by the optical camera 40 more intensively, the pressing shaft 52 is provided with a light reflecting portion (not shown) which reflects the light of the light emitter 30 and is received by the optical camera 40 when the pressing shaft 52 is pressed. The light reflecting portion may be a plane or a concave surface facing the light emitter 30, but may be other shapes in other embodiments, and is not particularly limited.
Referring to fig. 3 and 4, in order to ensure a compact overall structure without affecting the normal use of the key pad 10, the circuit board mounting base 20 is disposed on the side of the key pad 10, and the light emitter 30 and the optical camera 40 are both disposed adjacent to the second surface 12, and the light coverage area is formed on the second surface 12. When the key 50 is used, the second surface 12 is a surface close to a desktop and is a non-exterior surface, and the light coverage area is formed on the second surface 12, so that the light coverage area is not easily affected by other obstacles, and the function of the key 50 can be more accurately realized.
Further, in order to ensure smoother sliding between the pressing shaft 52 and the base 51, referring to fig. 5 and 6, one of the base 51 and the pressing shaft 52 is provided with a sliding block 521, and the other of the base 51 and the pressing shaft 52 is provided with a sliding slot 511, and the pressing shaft 52 can move up and down relative to the base 51 through the matching of the sliding block 521 and the sliding slot 511. In one embodiment, the side of the base 51 is provided with a slider 521, and a sliding slot 511 is provided at a corresponding position of the pressing shaft 52. In another embodiment, a sliding block 521 is disposed on a side surface of the pressing shaft 52, a sliding slot 511 is disposed at a corresponding position of the base 51, and a plurality of sliding blocks 521 and sliding slots 511 may be correspondingly disposed, all of which are within the protection scope of this patent.
In order to ensure that the light emitter 30 illuminates the second surface 12, referring to fig. 4, the light emitter 30 includes a light source 31 and a lens 32 disposed on a light exit surface of the light source 31, and the lens 32 is configured to convert light emitted from the light source 31 into a light source of a word line, which is parallel to the second surface 12 and forms the light coverage area. The light source 31 may be a light emitting source such as an infrared laser or an infrared light emitting LED, for example, an infrared laser with a power of more than 50mW is used. The lens 32 is disposed on the light emitting surface of the light source 31, and converts the light emitted from the light source 31 into a linear light source, so that the light reflection effect is good. Lens 32 has a spectral bandpass around 800 nm.
In order to capture the reflection point of each key 50 more accurately, referring to fig. 4, the optical camera 40 includes a camera sensor 41, and the camera sensor 41 is used for collecting the bright point position of the pressing shaft 52. The camera sensor 41 is a large wide-angle camera, and a wide-angle camera of 120 degrees or more, such as a 180-degree wide-angle camera, is selected.
Further, referring to fig. 4, the optical camera 40 further includes a filter 42 disposed on the camera sensor 41. The filter 42 is used to filter stray light, and only the reflected light passes through, but not other light.
The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention, and all modifications and equivalents of the present invention, which are made by the contents of the present specification and the accompanying drawings, or directly/indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A keyboard, comprising:
a key mounting base;
the circuit board mounting seat is connected with the key mounting seat;
the circuit board is arranged on the circuit board mounting seat;
the at least one light emitter is arranged on the circuit board mounting seat and is electrically connected with the circuit board;
the optical camera is arranged on the circuit board mounting seat and is electrically connected with the circuit board, and the optical camera and the light emitter are arranged on the circuit board mounting seat at intervals; and
the plurality of keys are arranged on the key installation seat, each key can move up and down relative to the key installation seat and has an initial position and a pressing position, the keys are positioned in the light coverage area of the light emitter, the light emitter is used for indicating the positions of the keys, and when one key is positioned at the initial position or the pressing position, the optical camera collects the bright spot positions of the keys.
2. The keyboard of claim 1, wherein the key mounting base has a first surface and a second surface opposite to each other, the second surface is located in the light-covered region, the key mounting base has a plurality of through holes penetrating through the first surface and the second surface, each of the keys is correspondingly installed in one of the through holes, when one of the keys is located in the pressing position, the key at least partially protrudes from the second surface and is located in the light-covered region, the key reflects light emitted from the light emitter to the optical camera, and the optical camera collects positions of bright spots of the key.
3. The keyboard of claim 2, wherein each of the keys includes a base and a pressing shaft capable of moving up and down relative to the base, the base is embedded in one of the through holes and defines a mounting hole, the pressing shaft is at least partially inserted into the mounting hole, and when the pressing shaft is pressed, the pressing shaft protrudes from the second surface and is located in the light-covered region.
4. The keyboard of claim 3, wherein the pressing shaft is provided with a light reflecting portion that reflects light of the light emitter and is received by the optical camera when the pressing shaft is pressed.
5. The keyboard of claim 3, wherein the circuit board mount is disposed on a side of the key mount, and the light emitter and the optical camera are both disposed adjacent to the second surface on which the light footprint is formed.
6. The keyboard as claimed in claim 3, wherein one of the base and the pressing shaft is provided with a slider, and the other of the base and the pressing shaft is provided with a sliding groove, and the pressing shaft is movable up and down relative to the base by the engagement of the slider and the sliding groove.
7. The keyboard as claimed in claim 3, wherein the light emitter comprises a light source and a lens disposed on a light exit surface of the light source, the lens being configured to convert light emitted from the light source into a wordline light source, the wordline light source being parallel to the second surface and forming the light covered area.
8. The keyboard of claim 3, wherein the optical camera comprises a camera sensor for capturing bright spot locations of the pressing axis.
9. The keyboard of claim 8, wherein the optical camera further comprises a filter disposed on the camera sensor.
10. A keyboard according to any one of claims 1 to 9, wherein the optical camera is spaced from the light emitter on the same surface of the circuit board mounting base.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911104023.6A CN110780747A (en) | 2019-11-12 | 2019-11-12 | Keyboard with a keyboard body |
| PCT/CN2019/123747 WO2021093061A1 (en) | 2019-11-12 | 2019-12-06 | Keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911104023.6A CN110780747A (en) | 2019-11-12 | 2019-11-12 | Keyboard with a keyboard body |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110780747A true CN110780747A (en) | 2020-02-11 |
Family
ID=69390635
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911104023.6A Pending CN110780747A (en) | 2019-11-12 | 2019-11-12 | Keyboard with a keyboard body |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110780747A (en) |
| WO (1) | WO2021093061A1 (en) |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3327218B2 (en) * | 1998-08-17 | 2002-09-24 | 日本電気株式会社 | Keyboard terminal |
| CN102520805A (en) * | 2011-12-24 | 2012-06-27 | 华南理工大学 | Input method and keyboard based on non-light projection |
| CN202404532U (en) * | 2011-12-24 | 2012-08-29 | 华南理工大学 | Non-light-projection-based input keyboard |
| CN205485943U (en) * | 2016-03-03 | 2016-08-17 | 东莞市铭冠电子科技有限公司 | Luminescent keyboard |
| CN206162471U (en) * | 2016-07-08 | 2017-05-10 | 广东海洋大学 | Virtual keyboard device |
| CN108170288A (en) * | 2018-01-22 | 2018-06-15 | 广东虹勤通讯技术有限公司 | A kind of laptop and keyboard |
| CN109617546A (en) * | 2019-01-18 | 2019-04-12 | 深圳市源隆光学科技有限公司 | Keyboard |
-
2019
- 2019-11-12 CN CN201911104023.6A patent/CN110780747A/en active Pending
- 2019-12-06 WO PCT/CN2019/123747 patent/WO2021093061A1/en active Application Filing
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021093061A1 (en) | 2021-05-20 |
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