CN106325561B - Digital laser page turning pen - Google Patents
Digital laser page turning pen Download PDFInfo
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- CN106325561B CN106325561B CN201610946085.1A CN201610946085A CN106325561B CN 106325561 B CN106325561 B CN 106325561B CN 201610946085 A CN201610946085 A CN 201610946085A CN 106325561 B CN106325561 B CN 106325561B
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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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
- G06F3/03542—Light pens for emitting or receiving light
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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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
- G06F3/0383—Signal control means within the pointing device
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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
- G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
- G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
- G06F3/038—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry
- G06F3/0386—Control and interface arrangements therefor, e.g. drivers or device-embedded control circuitry for light pen
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/038—Indexing scheme relating to G06F3/038
- G06F2203/0383—Remote input, i.e. interface arrangements in which the signals generated by a pointing device are transmitted to a PC at a remote location, e.g. to a PC in a LAN
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
- G06F2203/038—Indexing scheme relating to G06F3/038
- G06F2203/0384—Wireless input, i.e. hardware and software details of wireless interface arrangements for pointing devices
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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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)
- Position Input By Displaying (AREA)
- Toys (AREA)
Abstract
The invention discloses a digital laser page-turning pen, which comprises a page-turning pen main body and a receiving end matched with the page-turning pen main body for use; the page turning pen body includes: the laser comprises a shell, a laser light source, a power supply, keys and a circuit board; the circuit board includes: the device comprises a main control module, a key module connected with the main control module, a six-axis sensor module connected with the main control module, a laser driving module connected with the main control module and a wireless communication module connected with the main control module. The digital laser page-turning pen has the advantages that the mouse function and the painting brush function are added on the basis of realizing the page-turning function, clear digital laser indication on a screen such as an LCD or an LED is realized by adopting a mode of matching a hardware circuit and an application program, and the adjustment of various colors, shapes and sizes of digital laser spots can be realized; the method has humanized selection of the colors and the thicknesses of the brushes, can control the volume of a terminal system, and meets the requirements of different users.
Description
Technical Field
The invention relates to multimedia presentation equipment, in particular to a digital laser page turning pen.
Background
Most of the existing page turning pens in the market are cylinders, the working principle of the existing page turning pens is that the existing page turning pens consist of an RF radio frequency remote controller and a receiver, a wireless RF radio frequency transmitter is embedded in the RF radio frequency remote controller, the receiver is only required to be inserted into a USB interface of a terminal host when in use, normal work can be achieved without installing a driver, a user can operate the receiver only by clicking relevant function keys of the RF radio frequency remote controller, the transmitter does not need to be aligned with the receiver, and wireless freedom is truly embodied. But the main functions are limited to page turning up and down, full screen, black screen, laser and the like, are not diversified enough, and cannot be clearly indicated on the screen such as LCD or LED by adopting the infrared laser technology.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide the digital laser page-turning pen, which has diversified functions, has a mouse function and a painting brush function on the basis of realizing the page-turning function, can realize clear digital laser indication on a screen such as an LCD (liquid crystal display) or an LED (light-emitting diode), and can also realize adjustment of various colors, shapes and sizes of digital laser spots; the method has humanized selection of the colors and the thicknesses of the brushes, can control the volume of a terminal system, and meets the requirements of different users.
The invention adopts the following technical scheme:
the digital laser page turning pen is characterized by comprising a page turning pen main body and a receiving end matched with the page turning pen main body;
the page turning pen body includes: the laser comprises a shell, a laser light source, a power supply, keys arranged on the shell and a circuit board arranged in the shell; the circuit board includes: the device comprises a main control module, a key module connected with the main control module, a six-axis sensor module connected with the main control module, a laser driving module connected with the main control module and a wireless communication module connected with the main control module; the laser driving module is connected with the laser light source;
the keys comprise a mode switching key, and the mode switching key is used for switching the mouse-empty mode, the page-turning mode and the painting brush mode of the digital laser page-turning pen; the key module is used for transmitting key information to the main control module, wherein the key information comprises a key value and a pressing duration; the six-axis sensor module is used for transmitting the acquired acceleration and angle information to the main control module; the main control module is used for collecting the key information and the acceleration and angle information and sending instructions to the laser driving module and the wireless communication module according to the key information and the acceleration and angular velocity information; the laser driving module is used for controlling the opening and closing of the laser light source; the wireless communication module is used for sending the received main control module instruction to the receiving end; the receiving end is used for packaging the received wireless communication instruction according to a preset protocol and then sending the wireless communication instruction to the terminal, and the receiving end is connected with the terminal in the using process of the digital laser page-turning pen.
Preferably, the digital laser page-turning pen further comprises a charging management module, and the charging management module is used for charging the power supply.
Preferably, the digital laser page-turning pen further comprises an indicator light module, wherein the indicator light module is used for displaying the low-voltage state and the RF emission state of the power supply.
Preferably, one end of the housing is provided with a USB interface, and the USB interface is used for connecting an external charging device.
Preferably, the shell comprises a front cover and a rear cover, and a pull-down cover is arranged on the front cover.
Preferably, the rear cover is provided with a protruding portion, the protruding portion forms a cavity on the rear cover, the cavity is used for placing a receiving end accommodating member, and the receiving end accommodating member is used for accommodating the receiving end.
Preferably, the digital laser page turning pen further comprises a counterweight iron.
Preferably, the receiving end stores an application program for realizing a page turning function and a brush function according to the received instruction.
Preferably, the page turning function and the brush function are realized according to the received instruction, and specifically include:
judging whether the page turning mode is adopted according to the received instruction, if so, then
Judging whether a digital laser key is pressed or not, and if the digital laser key is pressed, displaying a facula icon on a display screen of the terminal;
judging whether the spot color key is pressed, if the spot color key is pressed, changing the spot color, and if the spot color key is pressed again, changing the spot color in sequence according to the set spot color;
judging whether the spot shape key is pressed, if the spot shape key is pressed, changing the spot shape, and if the spot shape key is pressed again, changing the spot shape in sequence according to the set spot shape.
Preferably, the page turning function and the brush function are realized according to the received instruction, and specifically include:
judging whether the drawing mode is adopted according to the received instruction, if so, then
Judging whether a brush key is pressed, if so, drawing lines on a display screen of the terminal according to a cursor track on the terminal;
judging whether a selected brush thickness key is pressed, if the selected brush thickness key is pressed, changing the thickness of the brush, and if the brush thickness key is pressed again, sequentially changing the thickness of the brush according to the set brush thickness;
judging whether a brush color key is pressed, if so, changing the color of the brush, and if the brush color key is pressed again, changing the color of the brush in sequence according to the set brush color;
judging whether an elimination key is pressed, if so, clearing the drawing line on the terminal screen.
Compared with the prior art, the invention has the beneficial effects that: the mouse function and the painting brush function are added on the basis of realizing the page turning function, clear digital laser indication on a screen such as an LCD or an LED is realized by adopting a mode of matching a hardware circuit with an application program, and the adjustment of various colors, shapes and sizes of digital laser spots can be realized; the method has humanized selection of the colors and the thicknesses of the brushes, can control the volume of a terminal system, and meets the requirements of different users.
Drawings
FIG. 1 is a schematic diagram of a digital laser page-turning pen according to the present invention;
FIG. 2 is an exploded view of the page-turning pen of FIG. 1;
FIG. 3 is a circuit diagram of a key module of the page turning pen shown in FIG. 1;
FIG. 4 is a circuit diagram of a six-axis sensor module of the page turning pen of FIG. 1;
FIG. 5 is a circuit diagram of a main control module of the page turning pen shown in FIG. 1;
FIG. 6 is a circuit diagram of a laser driver module of the page turning pen of FIG. 1;
FIG. 7 is a circuit diagram of a wireless communication module of the page turning pen of FIG. 1;
FIG. 8 is a circuit diagram of a charge management module of the page turning pen of FIG. 1;
fig. 9 is a circuit diagram of an indicator light module of the page turning pen shown in fig. 1.
Detailed Description
The invention will be further described with reference to the accompanying drawings and detailed description below:
as shown in fig. 1 to 2, a digital laser page-turning pen includes a page-turning pen body including: a housing 1, a key 2 provided on the housing 1, and a circuit board 3 provided inside the housing 1; the digital laser page turning pen further comprises: the receiving end 4 is matched with the main body of the page turning pen for use, the power supply 5 and the laser light source. The circuit board 3 includes: the laser light source device comprises a main control module, a key module connected with the main control module, a six-axis sensor module connected with the main control module, a laser driving module connected with the main control module and a wireless communication module connected with the main control module, wherein the laser driving module is connected with the laser light source.
The key 2 comprises a mode switching key, and the mode switching key is used for switching the mouse-empty mode, the page-turning mode and the painting brush mode of the digital laser page-turning pen, wherein the key module is used for transmitting key information to the main control module, and the key information comprises a key value and a pressing duration; the six-axis sensor module is used for transmitting the acquired acceleration and angle information to the main control module; the main control module is used for collecting the key information and the acceleration and angle information and sending instructions to the laser driving module and the wireless communication module according to the key information and the acceleration and angle information; the laser driving module is used for controlling the opening and closing of laser; the wireless communication module is used for sending the received main controller instruction to the receiving end 4; the receiving end 4 is used for packaging the received wireless communication instruction according to a preset protocol and then sending the wireless communication instruction to the terminal, and the receiving end 4 is connected with the terminal through a USB interface in the using process of the digital laser page turning pen. And different mode circuits are switched through the mode keys, so that multiple functions are realized.
The digital laser page-turning pen of the embodiment further comprises a charging management module, wherein the charging management module is used for charging the power supply. The power supply is a lithium battery, one end of the shell 1 is provided with a USB interface, and the USB interface is used for being connected with external charging equipment. The digital laser page-turning pen further comprises an indicator light module, wherein the indicator light module is used for displaying the low-voltage state and the RF emission state of the power supply.
The casing 1 includes a front cover 11 and a rear cover 12, a pull-down cover 111 is provided on the front cover 11, the key sheet 2 is provided on the casing 1 and connected with the key module, and the pull-down cover 111 is used for protecting the key sheet.
Preferably, the rear cover 12 is provided with a protruding portion for easy holding. The protruding part forms a cavity 121 on the rear cover 12, the cavity 121 is used for placing the receiving end accommodating part 6, and the receiving end accommodating part 6 is used for accommodating the receiving end 4, so that the receiving end is convenient to place and carry.
Preferably, the digital laser page turning pen of this embodiment further includes a weight iron 7 to maintain balance.
As shown in fig. 3, in the circuit diagram of the key module of the page turning pen according to the embodiment, the key module circuit is connected to the main control circuit, and the main control module determines whether the key is pressed by collecting the voltage values when the key is pressed and released.
As shown in fig. 4, in the circuit diagram of the six-axis sensor module of the page turning pen according to the embodiment, the six-axis sensor module circuit uses an MPU6050 chip to collect information of angular velocity and acceleration, and then transmits the data to the main control module circuit.
As shown in fig. 5, in the circuit diagram of the main control module of the page turning pen according to the embodiment, the main control module circuit adopts a SN8P26L321 chip, acquires key values of the key module, acceleration and angle information of the six-axis sensor module, and charging state of the power supply at the input end, and controls the laser driving module circuit, the wireless communication module circuit and the indicator light module circuit at the output end.
As shown in fig. 6, in the circuit diagram of the laser driving module of the page turning pen according to the embodiment, the laser driving module circuit is connected to the main controller module circuit, and the opening and closing of the laser light source are controlled according to the instruction of the main controller module.
As shown in fig. 7, in the circuit diagram of the wireless communication module of the page turning pen according to the embodiment, the wireless communication module circuit adopts a BK2401 chip, receives an instruction of the main control module, and sends the instruction to the receiving end.
As shown in fig. 8, in the circuit diagram of the charging management module of the page turning pen according to the embodiment, the circuit of the charging management module is connected with the circuit of the indicator light module, and a charging current value is obtained according to the current on the resistor R14, when the power supply is fully charged, the CHRG pin outputs high voltage, the LED1 is turned off, and the BAT pin does not continue to output current to charge the power supply. In the power supply charging process, the CHRG pin outputs low voltage, and the two ends of the LED1 form forward voltage difference, so that the LED1 is on.
As shown in fig. 9, in the circuit diagram of the indicator light module of the page turning pen according to the present embodiment, the LED light is used to indicate the low voltage state and the RF emission state of the power supply.
The mouse-over mode can realize cursor up and down movement, left mouse button, right mouse button, volume control, mouse pointer control and keyboard input. The six-axis sensor module collects angular velocity and acceleration information and sends the angular velocity and acceleration information to the main control module, the main control module calculates displacement data converted into a plane, the plane displacement data is sent to the receiving end through the 2.4G frequency band wireless communication module, the receiving end packages received instructions into mouse displacement data according to a USB HID protocol and sends the mouse displacement data to the terminal, and the terminal finishes up-and-down movement of a cursor. The implementation of the functions of the left mouse button, the right mouse button, the laser, the volume control, the mouse pointer control and the Esc key, the Home key and the Tab key of the keyboard input module is realized by pressing corresponding keys, the key module sends key information to the main control module, the main control module sends instructions to the receiving end through the 2.4G frequency band wireless communication module, the receiving end packages the received instructions according to the USB HID protocol and then sends the packaged instructions to the terminal, and the terminal completes corresponding operations.
The page turning mode can realize page turning, projection, full screen, black screen, light spot color control, light spot shape control, light spot size control and laser control, and the brush mode can realize brush color control, brush thickness control, line drawing removal, screen movement, screen magnification and screen reduction. The realization of the functions of page turning up, page turning down, projection, black screen, full screen and laser control is realized by pressing corresponding keys, sending key information to a main control module by a key module, sending the key information to a receiving end by the main control module through a 2.4G frequency band wireless communication module, packaging a received instruction by the receiving end according to a USB HID protocol, and sending the packaged instruction to a terminal, wherein the terminal completes corresponding operation. The light spot color control, the light spot shape control, the light spot size control, the painting brush color control, the painting brush thickness control, the line drawing removal, the screen movement, the screen amplification and the screen reduction are realized by pressing corresponding keys, the key module sends key information to the main control module, the main control module sends key values to the receiving end through a 2.4G frequency band, the receiving end packages received instructions into keyboard data according to a USB HID protocol and sends the keyboard data to an application program for realizing the corresponding functions, and the application completes corresponding operations.
In this embodiment, the receiving end stores an application program for implementing a page turning function and a brush function according to the received instruction.
According to the received instruction, the page turning function and the painting brush function are realized, and the method specifically comprises the following steps:
judging whether the page turning mode is adopted according to the received instruction, if so, then
Judging whether a digital laser key is pressed or not, and if the digital laser key is pressed, displaying a facula icon on a display screen of the terminal;
judging whether the spot color key is pressed, if the spot color key is pressed, changing the spot color, and if the spot color key is pressed again, changing the spot color in sequence according to the set spot color;
judging whether the spot shape key is pressed, if the spot shape key is pressed, changing the spot shape, and if the spot shape key is pressed again, changing the spot shape in sequence according to the set spot shape.
Judging whether the drawing mode is adopted according to the received instruction, if so, then
Judging whether a brush key is pressed, if so, drawing lines on a display screen of the terminal according to a cursor track on the terminal;
judging whether a selected brush thickness key is pressed, if the selected brush thickness key is pressed, changing the thickness of the brush, and if the brush thickness key is pressed again, sequentially changing the thickness of the brush according to the set brush thickness;
judging whether a brush color key is pressed, if so, changing the color of the brush, and if the brush color key is pressed again, changing the color of the brush in sequence according to the set brush color;
judging whether an elimination key is pressed, if so, clearing the drawing line on the terminal screen.
The light spot colors set in the application program are red, green, blue, yellow, black and white, and the set light spot shapes are solid circles, hollow circles, arrows, five-pointed stars and hand shapes.
The digital laser page-turning pen has the advantages that the mouse function and the painting brush function are added on the basis of realizing the page-turning function, clear digital laser indication on a screen such as an LCD or an LED is realized by adopting a mode of matching a hardware circuit and an application program, and the adjustment of various colors, shapes and sizes of digital laser spots can be realized; the method has humanized selection of the colors and the thicknesses of the brushes, can control the volume of a terminal system, and meets the requirements of different users.
It will be apparent to those skilled in the art from this disclosure that various other changes and modifications can be made which are within the scope of the invention as defined in the appended claims.
Claims (7)
1. The digital laser page turning pen is characterized by comprising a page turning pen main body and a receiving end matched with the page turning pen main body;
the page turning pen body includes: the laser comprises a shell, a laser light source, a power supply, keys arranged on the shell and a circuit board arranged in the shell; the circuit board includes: the device comprises a main control module, a key module connected with the main control module, a six-axis sensor module connected with the main control module, a laser driving module connected with the main control module and a wireless communication module connected with the main control module; the laser driving module is connected with the laser light source;
the keys comprise a mode switching key, and the mode switching key is used for switching the mouse-empty mode, the page-turning mode and the painting brush mode of the digital laser page-turning pen; the key module is used for transmitting key information to the main control module, wherein the key information comprises a key value and a pressing duration; the six-axis sensor module is used for transmitting the acquired acceleration and angle information to the main control module; the main control module is used for collecting the key information and the acceleration and angle information and sending instructions to the laser driving module and the wireless communication module according to the key information and the acceleration and angular velocity information; the laser driving module is used for controlling the opening and closing of the laser light source; the wireless communication module is used for sending the received main control module instruction to the receiving end; the receiving end is used for packaging the received wireless communication instruction according to a preset protocol and then sending the wireless communication instruction to the terminal, and the receiving end is connected with the terminal in the using process of the digital laser page-turning pen;
the receiving end stores an application program for realizing a page turning function and a painting brush function according to the received instruction;
according to the received instruction, the page turning function and the painting brush function are realized, and the method specifically comprises the following steps:
judging whether the page turning mode is adopted according to the received instruction, if so, then
Judging whether a digital laser key is pressed or not, and if the digital laser key is pressed, displaying a facula icon on a display screen of the terminal;
judging whether the spot color key is pressed, if the spot color key is pressed, changing the spot color, and if the spot color key is pressed again, changing the spot color in sequence according to the set spot color;
judging whether a light spot shape key is pressed, if the light spot shape key is pressed, changing the light spot shape, and if the light spot shape key is pressed again, changing the light spot shape in sequence according to the set light spot shape;
judging whether the drawing mode is adopted according to the received instruction, if so, then
Judging whether a brush key is pressed, if so, drawing lines on a display screen of the terminal according to a cursor track on the terminal;
judging whether a selected brush thickness key is pressed, if the selected brush thickness key is pressed, changing the thickness of the brush, and if the brush thickness key is pressed again, sequentially changing the thickness of the brush according to the set brush thickness;
judging whether a brush color key is pressed, if so, changing the color of the brush, and if the brush color key is pressed again, changing the color of the brush in sequence according to the set brush color;
judging whether an elimination key is pressed, if so, clearing the drawing line on the terminal screen.
2. The digital laser paging pen as claimed in claim 1, further comprising a charging management module for charging the power source.
3. The digital laser paging pen as claimed in claim 2, further comprising an indicator light module for displaying a low voltage state and an RF emission state of the power source.
4. The digital laser paging pen as claimed in claim 2, wherein one end of the housing is provided with a USB interface for connecting to an external charging device.
5. The digital laser paging pen as claimed in claim 1, wherein the housing comprises a front cover and a rear cover, and a pull-down cover is provided on the front cover.
6. The digital laser paging pen as claimed in claim 5, wherein the rear cover is provided with a protrusion, the protrusion forms a cavity on the rear cover, the cavity is used for placing a receiving end accommodating member, and the receiving end accommodating member is used for accommodating the receiving end.
7. The digital laser paging pen as claimed in claim 1, further comprising a weight iron.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201610946085.1A CN106325561B (en) | 2016-11-02 | 2016-11-02 | Digital laser page turning pen |
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| CN201610946085.1A CN106325561B (en) | 2016-11-02 | 2016-11-02 | Digital laser page turning pen |
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| CN106325561B true CN106325561B (en) | 2023-07-04 |
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| CN108093285A (en) * | 2017-12-20 | 2018-05-29 | 四川长虹教育科技有限公司 | A kind of multifunctional electronic writing system based on touch TV |
| CN110162235B (en) * | 2019-04-28 | 2021-07-23 | 深圳市格上格创新科技有限公司 | Wireless demonstration equipment and detail amplification control method and device thereof |
| CN110308826A (en) * | 2019-06-28 | 2019-10-08 | 南京通派光电科技有限公司 | A kind of dynamic Simulation of keyboard input instruction set method of the free drive of interactive whiteboard system |
| CN110389740B (en) * | 2019-07-05 | 2024-04-30 | 深圳市睿思聪科技有限公司 | File demonstration system, controller and method based on display screen |
| CN111198642A (en) * | 2019-12-29 | 2020-05-26 | 上海诺为科技有限公司 | Interaction method between air mouse page turning pen and PC terminal |
| CN113291083A (en) * | 2021-07-02 | 2021-08-24 | 上海应用技术大学 | Multifunctional intelligent chalk eraser and using method thereof |
| CN114546134A (en) * | 2022-02-24 | 2022-05-27 | 深圳市启望科文技术有限公司 | Interaction system and method of multifunctional page turning pen and host computer end |
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| 骆黄明 ; 姜宇慧 ; 胡岑琳 ; 陆巧巧 ; 梁金玉 ; .激光笔翻页器的制作.科技信息.2011,(13),全文. * |
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