CN108829296A - A kind of laser-projection keyboard - Google Patents
A kind of laser-projection keyboard Download PDFInfo
- Publication number
- CN108829296A CN108829296A CN201810536527.4A CN201810536527A CN108829296A CN 108829296 A CN108829296 A CN 108829296A CN 201810536527 A CN201810536527 A CN 201810536527A CN 108829296 A CN108829296 A CN 108829296A
- Authority
- CN
- China
- Prior art keywords
- module
- projection
- keyboard
- laser
- range finder
- Prior art date
- 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.)
- Pending
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Classifications
-
- 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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/043—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves
- G06F3/0436—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using propagating acoustic waves in which generating transducers and detecting transducers are attached to a single acoustic waves transmission substrate
-
- 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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
Abstract
The invention discloses a kind of laser-projection keyboards, include laser projection module, chassis, flexible adjustment bar, range finder module, control module, bluetooth module and ultrasonic sensing module；Laser projection module, range finder module are arranged at the top of flexible adjustment bar, and the bottom end and chassis for the adjustment bar that stretches are connected, and ultrasonic sensing module, control module are arranged on chassis.When work, control unit is electrically connected with laser projection module, range finder module, bluetooth module, ultrasonic sensing module respectively, the projection of dummy keyboard is completed for controlling laser projection module, and after calculating the information of typing according to the coordinate range of each key, the information sensed in conjunction with ultrasonic sensing module on the distance calculating dummy keyboard of range finder module measurement, host computer is passed to.The configuration of the present invention is simple, it is easy to use, the size of dummy keyboard can be freely adjusted, more humanized, user experience is more preferably.
Description
Technical field
The present invention relates to computer peripheral equipment field more particularly to a kind of laser-projection keyboards.
Background technique
Keyboard is a kind of instruction and data input unit for operating equipment operation, is also referred to by system arrangement operation one
One group of function key of platform machine or equipment（Such as typewriter, computor-keyboard）.Keyboard is also a part for forming keyboard instrument, can also
To refer to that the musical instrument for using keyboard, such as piano, numerical digit piano or electronic organ, keyboard help to practice at typing.
It is also most important input equipment that keyboard, which is the most frequently used, can be by English alphabet, number, punctuation mark by keyboard
Etc. being input in computer, to issue order, input data etc. to computer.There are also some keys with various shortcut keys
Disk, but originally this kind of keyboard is chiefly used in brand name computer, and is once once being considered as the characteristic of brand name computer.Over time, gradually
The independent product with various shortcut functions that also occurs in the market individually sell, and with it is dedicated driving and set soft
Part is also able to achieve personalized operation on compatible.
There are many type of keyboard, and generally can be divided into contact and non-contact type, there are also laser formulas（Radium-shine laser keyboard）Three is big
Class.
Projected keyboard is one kind of radium-shine formula, means that with projection, it is used as a kind of new input mode
VKB keyboard technique can go out the profile of QWERTY keyboard in any surface projection with built-in red laser transmitter, then track
The movement of finger finally completes the acquisition of input information.
When using this keyboard, " keyboard " key that keyboard is projected out only need to be tapped, can be completed and common keyboard one
The input of sample operates, and user is also an option that and opens/closes " key " sound.When opening " key " sound, in typewriting, projection
Keyboard even can issue the key entry sound similar with mechanical keyboard.
The advantages of projected keyboard is compact volume and convenience first, is taken up space similar with mobile phone, allows people in outgoing long journey
When need not again carry greatly keyboard.Followed by projected keyboard is very extremely dazzled when in use, and one of light is penetrated
On the table, a width keyboard is formed, use when can absolutely be attracted to proprietary sight.And it is worth mentioning that throwing
The compatibility of shadow keyboard is very strong, and desktop computer and tablet computer even mobile phone can be attached thereto and use.
Existing laser-projection keyboard generally limits the size of projected keyboard in the dust, can not adjust the virtual key cast out
The size of disk, for the people larger or smaller compared with ordinary person to a part of hand, physical examination is not best.
Summary of the invention
The technical problem to be solved by the present invention is to provide a kind of laser throwing for defect involved in background technique
Shadow keyboard.
The present invention uses following technical scheme to solve above-mentioned technical problem：
A kind of laser-projection keyboard includes laser projection module, chassis, flexible adjustment bar, range finder module, control module, bluetooth
Module and ultrasonic sensing module；
The laser projection module, range finder module are arranged at the top of the flexible adjustment bar, the bottom of the flexible adjustment bar
End and the chassis are connected, and the ultrasonic sensing module, control module are arranged on the chassis, wherein：
The chassis is placed in the plane projected；
The laser projection module forms dummy keyboard for keyboard image to be projected to the plane projected；
The flexible adjustment bar arrives the distance between projection plane for adjusting laser projection module, and then adjusts dummy keyboard
Size；
The range finder module arrives the distance between projection plane for measuring laser projection module, and passes it to the control
Module；
The coordinate when ultrasonic sensing module is pressed on the virtual keyboard for finger sensing, and pass it to the control
Molding block；
The bluetooth module is used for and host computer is communicated；
Described control unit respectively with the laser projection module, range finder module, bluetooth module, the electrical phase of ultrasonic sensing module
Even, the projection of dummy keyboard is completed for controlling the laser projection module, and void is calculated according to the distance of range finder module measurement
After the coordinate range of each key, the information sensed in conjunction with ultrasonic sensing module calculate the information of typing on quasi- keyboard,
Pass to host computer.
As a kind of further prioritization scheme of laser-projection keyboard of the present invention, the processor of the control module is used
ARM series monolithic.
As a kind of further prioritization scheme of laser-projection keyboard of the present invention, the processor of the control module is used
SAA7750 single-chip microcontroller.
It also include to be connected with the control module as a kind of further prioritization scheme of laser-projection keyboard of the present invention
Charging module, the charging module include rechargeable battery and charging circuit.
As a kind of further prioritization scheme of laser-projection keyboard of the present invention, the rechargeable battery uses lithium-ion electric
Pond, model ICR18650.
The invention adopts the above technical scheme compared with prior art, has the following technical effects：
1. structure is simple, easy to use；
2. the size of dummy keyboard can be adjusted freely, more humanized, user experience is more preferably.
Specific embodiment
Technical solution of the present invention is described in further detail below：
The invention discloses a kind of laser-projection keyboards, include laser projection module, chassis, flexible adjustment bar, range finder module, control
Molding block, bluetooth module and ultrasonic sensing module；
The laser projection module, range finder module are arranged at the top of the flexible adjustment bar, the bottom of the flexible adjustment bar
End and the chassis are connected, and the ultrasonic sensing module, control module are arranged on the chassis, wherein：
The chassis is placed in the plane projected；
The laser projection module forms dummy keyboard for keyboard image to be projected to the plane projected；
The flexible adjustment bar arrives the distance between projection plane for adjusting laser projection module, and then adjusts dummy keyboard
Size；
The range finder module arrives the distance between projection plane for measuring laser projection module, and passes it to the control
Module；
The coordinate when ultrasonic sensing module is pressed on the virtual keyboard for finger sensing, and pass it to the control
Molding block；
The bluetooth module is used for and host computer is communicated；
Described control unit respectively with the laser projection module, range finder module, bluetooth module, the electrical phase of ultrasonic sensing module
Even, the projection of dummy keyboard is completed for controlling the laser projection module, and void is calculated according to the distance of range finder module measurement
After the coordinate range of each key, the information sensed in conjunction with ultrasonic sensing module calculate the information of typing on quasi- keyboard,
Pass to host computer.
The processor of the control module uses ARM series monolithic, preferentially uses SAA7750 single-chip microcontroller.
Laser-projection keyboard can also include the charging module connected with the control module, and the charging module includes filling
Battery and charging circuit.
The rechargeable battery uses lithium ion battery, model ICR18650.
The present invention carries out data input, and specific step is as follows：
Step 1）, chassis is placed in the plane for needing to project by user, and adjusts the length of flexible adjustment bar；
Step 2）, control module control laser projection module projected on a projection plane, formed dummy keyboard；
Step 3）, range finder module measures the distance between laser projection module and projection plane, and passes it to the control
Module；
Step 4）, coordinate when ultrasonic sensing module finger sensing is pressed on the virtual keyboard, and pass it to the control
Molding block；
Step 5）, control module by the distance between laser projection module and projection plane divided by preset gauged distance threshold value,
Obtain the ratio between current virtual keyboard and preset keyboard；
Step 6）, coordinate when control module presses the finger received on the virtual keyboard is multiplied by current virtual keyboard and pre-
If keyboard between ratio, the coordinate after being converted；
Step 7）, the coordinate range of each key on the coordinate and preset keyboard after conversion matches, looked for by control module
To and conversion after the key that matches of coordinate, record the value of the key, and passed host computer by bluetooth module.
Those skilled in the art can understand that unless otherwise defined, all terms used herein（Including skill
Art term and scientific term）With meaning identical with the general understanding of those of ordinary skill in fields of the present invention.Also
It should be understood that those terms such as defined in the general dictionary should be understood that have in the context of the prior art
The consistent meaning of meaning will not be explained in an idealized or overly formal meaning and unless defined as here.
Above-described specific embodiment has carried out further the purpose of the present invention, technical scheme and beneficial effects
It is described in detail, it should be understood that being not limited to this hair the foregoing is merely a specific embodiment of the invention
Bright, all within the spirits and principles of the present invention, any modification, equivalent substitution, improvement and etc. done should be included in the present invention
Protection scope within.
Claims (5)
1. a kind of laser-projection keyboard, which is characterized in that comprising laser projection module, chassis, flexible adjustment bar, range finder module,
Control module, bluetooth module and ultrasonic sensing module；
The laser projection module, range finder module are arranged at the top of the flexible adjustment bar, the bottom of the flexible adjustment bar
End and the chassis are connected, and the ultrasonic sensing module, control module are arranged on the chassis, wherein：
The chassis is placed in the plane projected；
The laser projection module forms dummy keyboard for keyboard image to be projected to the plane projected；
The flexible adjustment bar arrives the distance between projection plane for adjusting laser projection module, and then adjusts dummy keyboard
Size；
The range finder module arrives the distance between projection plane for measuring laser projection module, and passes it to the control
Module；
The coordinate when ultrasonic sensing module is pressed on the virtual keyboard for finger sensing, and pass it to the control
Molding block；
The bluetooth module is used for and host computer is communicated；
Described control unit respectively with the laser projection module, range finder module, bluetooth module, the electrical phase of ultrasonic sensing module
Even, the projection of dummy keyboard is completed for controlling the laser projection module, and void is calculated according to the distance of range finder module measurement
After the coordinate range of each key, the information sensed in conjunction with ultrasonic sensing module calculate the information of typing on quasi- keyboard,
Pass to host computer.
2. laser-projection keyboard according to claim 1, which is characterized in that the processor of the control module uses ARM
Series monolithic.
3. laser-projection keyboard according to claim 2, which is characterized in that the processor of the control module uses
SAA7750 single-chip microcontroller.
4. laser-projection keyboard according to claim 1, which is characterized in that also comprising being filled with what the control module connected
Electric module, the charging module include rechargeable battery and charging circuit.
5. laser-projection keyboard according to claim 4, which is characterized in that the rechargeable battery uses lithium ion battery,
Model ICR18650.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810536527.4A CN108829296A (en) | 2018-05-30 | 2018-05-30 | A kind of laser-projection keyboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810536527.4A CN108829296A (en) | 2018-05-30 | 2018-05-30 | A kind of laser-projection keyboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108829296A true CN108829296A (en) | 2018-11-16 |
Family
ID=64146971
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810536527.4A Pending CN108829296A (en) | 2018-05-30 | 2018-05-30 | A kind of laser-projection keyboard |
Country Status (1)
| Country | Link |
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| CN (1) | CN108829296A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971947A (en) * | 2019-11-14 | 2020-04-07 | 广东长虹电子有限公司 | Laser television capable of bidirectionally projecting and control method thereof |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335783A (en) * | 2008-07-30 | 2008-12-31 | 中兴通讯股份有限公司 | Full-functional press-key mobile phone and inputting method |
| CN102566829A (en) * | 2010-12-31 | 2012-07-11 | 上海优熠电子科技有限公司 | Touch detection system with camera |
| CN103324298A (en) * | 2013-06-05 | 2013-09-25 | 海信集团有限公司 | Ultrasonic laser projection keyboard and information input method |
| CN105892760A (en) * | 2014-12-17 | 2016-08-24 | 广东新锦光电科技有限公司 | Virtual keyboard control method and apparatus using the same |
| US20170102867A1 (en) * | 2015-10-13 | 2017-04-13 | Drew Bernard | Touchpad to interpret palm contact as intentional input |
-
2018
- 2018-05-30 CN CN201810536527.4A patent/CN108829296A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101335783A (en) * | 2008-07-30 | 2008-12-31 | 中兴通讯股份有限公司 | Full-functional press-key mobile phone and inputting method |
| CN102566829A (en) * | 2010-12-31 | 2012-07-11 | 上海优熠电子科技有限公司 | Touch detection system with camera |
| CN103324298A (en) * | 2013-06-05 | 2013-09-25 | 海信集团有限公司 | Ultrasonic laser projection keyboard and information input method |
| CN105892760A (en) * | 2014-12-17 | 2016-08-24 | 广东新锦光电科技有限公司 | Virtual keyboard control method and apparatus using the same |
| US20170102867A1 (en) * | 2015-10-13 | 2017-04-13 | Drew Bernard | Touchpad to interpret palm contact as intentional input |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110971947A (en) * | 2019-11-14 | 2020-04-07 | 广东长虹电子有限公司 | Laser television capable of bidirectionally projecting and control method thereof |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20181116 |
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| RJ01 | Rejection of invention patent application after publication |