CN105955512A - Mouse-type laser electronic chalk - Google Patents
Mouse-type laser electronic chalk Download PDFInfo
- Publication number
- CN105955512A CN105955512A CN201610250643.0A CN201610250643A CN105955512A CN 105955512 A CN105955512 A CN 105955512A CN 201610250643 A CN201610250643 A CN 201610250643A CN 105955512 A CN105955512 A CN 105955512A
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- avr single
- mouse
- single chip
- module
- chalk
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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
- G06F3/03—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
- G06F3/03545—Pens or stylus
-
- 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
- G06F3/0346—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of the device orientation or free movement in a 3D space, e.g. 3D mice, 6-DOF [six degrees of freedom] pointers using gyroscopes, accelerometers or tilt-sensors
-
- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09B—EDUCATIONAL OR DEMONSTRATION APPLIANCES; APPLIANCES FOR TEACHING, OR COMMUNICATING WITH, THE BLIND, DEAF OR MUTE; MODELS; PLANETARIA; GLOBES; MAPS; DIAGRAMS
- G09B17/00—Teaching reading
- G09B17/02—Line indicators or other guides or masks
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Human Computer Interaction (AREA)
- Business, Economics & Management (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- Position Input By Displaying (AREA)
Abstract
The invention discloses a mouse-type laser electronic chalk, and relates to the technical field of novel multimedia demonstration. The chalk comprises an acceleration sensor, an AVR single-chip microcomputer, and a ZigBee wireless communication module JN5139. The acceleration sensor is connected with the AVR single-chip microcomputer. The AVR single-chip microcomputer is connected with the JN5139 module through a UART interface. The AVR single-chip microcomputer is also connected with a power module, an external clock, a reset circuit, and an ISP debugging module. The JN5139 module is connected with an upper computer through a radio frequency chip of the JN5139 module. The upper computer is connected with a projector which is arranged opposite to a screen. The periphery of the screen is fixedly provided with a plurality of JN5139 modules which are compatible to a Zigbee protocol. Terminal nodes are installed on a device on the periphery of the projector screen. The mouse-type laser electronic chalk integrates functions of a mouse, a laser pen, a page turner, an electronic pointer, and an electronic chalk, and the functions are cooperated and coordinated. The chalk provides convenience for multimedia demonstration activities, and is good in practicality, and is easy for popularization and use.
Description
Technical field
The present invention relates to Novel multimedia performance technology field, be specifically related to mouse-type electronic laser chalk.
Background technology
At present, the instruction equipment being currently used in multimedia presentation activity, common are laser pen, electronic teacher pointer, also belong to
The wireless mouse etc. of computer peripheral device, they are respectively arranged with its pluses and minuses, but the most do not possess electronics chalk function.
Laser pen, also known as laser designator, refer to star pen etc., be visible laser be designed to portable, hands is easily held, laser module (send out
Optical diode) the pen type emitter that is processed into, common laser designator is mainly transmitting red laser beam, its wavelength be λ=650～
660nm、635nm.The power of laser pen, generally in units of mW, the power visible ray (wavelength 400-700nm) less than 1mW
Laser pen is Equations of The Second Kind (Class 2 or II)；Power between 1-5mW for the 3rd class A (Class 3A or IIIa).Generally
During multimedia presentation, demonstrator is frequently used the power red laser pen less than 5mW, projection in the screen of projector
One red luminous point or a red light directed towards object.This is simple laser pen, and computer is two independent equipment,
The two does not has control planning, it is impossible to leave person's handwriting on the screen of projector.
Page turning laser pen can control computer simply, page turning laser pen can several keys of analogue computer keyboard simply, example
Such as upper and lower page turning, be equivalent to Page Up, Page down key on computer keyboard, it is adaptable to PPT, word, excel,
Picture and the page turning up and down of web browser；Telecontrol engineering: general employing RF radio-frequency technique, is furnished with form of a stroke or a combination of strokes emitter and USB flash disk mould
The receptor of sample.Laser designation: pin laser designation key, laser lamp is bright, does not presses, and laser lamp goes out；Laser power is generally less than
5mw, optical maser wavelength is at 650nm, and laser range is generally higher than 800 meters, and remote control distance is generally 10 meters, and computer interfaceJi Suanjijiekou is general
Using USB2.0 interface, plug and play is not required to specific drivers, supports common operating system.Equally can not be at projector
Person's handwriting is left on screen.
Wireless mouse uses wireless communication technology and compunication, including bluetooth, Wi-Fi (IEEE 802.11), Infrared
(IrDA), multiple wireless technology standard (agreement) such as ZigBee (IEEE 802.15.4), typically use 27M, 2.4G, bluetooth
Technology realizes the wireless telecommunications of mouse and main frame；Wireless mouse, as the peripheral equipment of computer, can only control computer, not have
The function of standby laser pen, does not the most possess the function of page turning laser pen, and wireless mouse leaves mouse pad and (or is referred to as location reference plane system
System), the positioning function just lost, aloft wave or rock mouse, mouse pointer will not move on screen, the most just
Person's handwriting can not be left on the screen of projector.
At present, in demonstration activity, the use of scialyscope is more and more universal, however have during currently used scialyscope one the biggest
Shortcoming, three kinds of multimedias instruction equipment as above, the equipment such as laser pen, page turning laser pen, wireless mouse all can not be flexible
Ground operates demo system based on computer+projector.We usually see the following two kinds situation:
Situation one: lecturer walks to leave office to grope keyboard nextly or click mouse for film page turning or opens picture, file
Situation. sometimes also need to other people and coordinate, could complete to report lecture in phase, and it is frequently necessary at projector in explaining
On screen impromptu work some mark, calculate, write, this generally requires additionally to provide and prepares white (black) plate, and this not only takies
Space, the most dumb, and generally require lighting scene and change, the eyes of spectators need the adaptation of certain time, necessarily
Affecting impression and the experience of spectators in degree, this not only leverages meeting or the efficiency in classroom and effect, and speaker and
The emotion of audience is the most impacted.
Situation two: lecturer sits up straight rostrum, immerses oneself in the screen of notebook computer, gives a lecture, and seldom has body or limb
The utilization of body language, the attention of spectators all concentrates on screen, only hears its sound, loses its people, and lecturer seldom can stand up
Coming and audience interaction, lecture effect is the best, and also difficulty leaves deep impression to spectators.
In order to solve the problems referred to above, design a kind of novel mouse-type electronic laser chalk or necessary.
Summary of the invention
For solving the problems referred to above, the invention provides mouse-type electronic laser chalk, simple in construction, reasonable in design, gather Mus
Mark, laser pen, page turner, electronic teacher pointer, electronics chalk function, in one, matching coordinative, facilitate multimedia presentation activity,
Practical, it is easy to promote the use of.
For achieving the above object, the optimal technical scheme that the present invention takes is: mouse-type electronic laser chalk, passes including acceleration
Sensor, AVR single chip and ZigBee wireless communication module, acceleration transducer is connected with AVR single chip, and AVR single chip is led to
Crossing UART interface to be connected with ZigBee wireless communication module, AVR single chip is further connected with power module, external clock, reset electricity
Road and ISP debugging module, ZigBee wireless communication module is connected with host computer by self radio frequency chip, host computer with face toward
The projector that screen is arranged connects, and described screen periphery is fixed with multiple ZigBee wireless communication module, is installed by terminal node
On the equipment of projecting apparatus screen surrounding, terminal node by with wireless mode and aggregation node, i.e. mouse-type electronic laser chalk
Connecting, wireless sense network network aggregation node is integrated with acceleration transducer, AVR single chip, ZigBee wireless communication module
The part such as JN5139 and signal acquisition processing circuit, wherein JN5139 module is connected with the serial ports of AVR single chip by serial ports,
JN5139 module, by the data from the acquisition of AVR single chip, is sent to host computer by the radio frequency chip of self, i.e. demonstrates calculating
Machine.
As preferably, 3-axis acceleration signal end X-OUT, Y-OUT, Z-OUT of described acceleration transducer are mono-with AVR respectively
Three ADC conversion port PA1, PA2, PA3 of sheet machine connect, and the park mode of acceleration transducer controls pin SELECT MODE
Being connected with the PAO pin of AVR single chip, described acceleration transducer uses acceleration transducer MMA7260, AVR single chip
Using signal acquisition process chip ATmaga16, ZigBee wireless communication module uses Jennic second filial generation JN5139.
As preferably, the AVR processing system of described AVR single chip and its peripheral circuit composition by wireless sensor network and
The mode of two kinds of data transmission of wireless WiFi is connected with host computer, and wireless sensor network sink node plays signal transmission, road
By the effect with networking, it uses integrated embedded Uart-WiFi module, built-in wireless network protocol IEEE802.11 protocol stack
And ICP/IP protocol stack, it is possible to realize serial data to the conversion between wireless network.
The method have the advantages that gathered mouse, laser pen, page turner, electronic teacher pointer, electronics chalk function it
The Novel multimedia instruction equipment of great achievement, various functions work in coordination to coordinate very much, utilize mouse-type electronic laser chalk not only may be used
To realize all of mouse action, moreover it is possible to realize the function of laser pen, and the function of electronic teacher pointer can be realized, even more important be
Person's handwriting can be left, it is achieved the function of electronics chalk on projecting apparatus screen, powerful, practical reliable.
Accompanying drawing explanation
Fig. 1 is the system block diagram of the present invention；
Fig. 2 is the application schematic diagram of the present invention；
Fig. 3 is the acceleration transducer connection circuit diagram with AVR single chip of the present invention；
Fig. 4 is the data transmission schematic diagram of wireless sensor network of the present invention and WiFi.
Detailed description of the invention
In order to make objects and advantages of the present invention clearer, below in conjunction with embodiment, the present invention is carried out the most specifically
Bright.Should be appreciated that and described herein be embodied as case only in order to explain the present invention, be not intended to limit the present invention.
As Figure 1-4, embodiment of the present invention provides mouse-type electronic laser chalk, including acceleration transducer 1, AVR
Single-chip microcomputer 2 and JN5139 module 3, acceleration transducer 1 is connected with AVR single chip 2, and AVR single chip 2 is connect by UART
Mouth is connected with JN5139 module 3, and AVR single chip 2 is further connected with power module 4, external clock 5, reset circuit 6 and ISP
Debugging module 7, JN5139 module 3 is connected with host computer 8 by the radio frequency chip of self, and host computer 8 sets with facing to screen 9
The projector 10 put connects, and is fixed with the JN5139 module 3 of multiple compatible Zigbee protocol around described screen 9, will eventually
End node is arranged on the equipment of projecting apparatus screen surrounding, and terminal node is by swashing with wireless mode and aggregation node, i.e. mouse-type
Photoelectron chalk connects, and wireless sense network network aggregation node is integrated with acceleration transducer, AVR single chip, JN5139 module
And the part such as signal acquisition processing circuit, wherein JN5139 module is connected with the serial ports of AVR single chip by serial ports, JN5139
Module, by the data from the acquisition of AVR single chip, is sent to host computer by the radio frequency chip of self, i.e. demonstration computer.
It should be noted that described AVR single chip 2 passes through wireless senser with the AVR processing system that its peripheral circuit forms
The mode of network and two kinds of data transmission of wireless WiFi is connected with host computer 8, and wireless sensor network sink node plays signal
Transmission, route and the effect of networking, it uses integrated embedded Uart-WiFi module, built-in wireless network protocol IEEE802.11
Protocol stack and ICP/IP protocol stack, it is possible to realize serial data to the conversion between wireless network.Use wireless sensor network
Mode with two kinds of data transmission of wireless WiFi.Wherein wireless sensor network uses JN5139 node to set up based on 802.15.4
The Star Network of procotol, the data received are sent to specify the PC of IP by ICP/IP protocol.
Additionally, 3-axis acceleration signal end X-OUT, Y-OUT, Z-OUT of described acceleration transducer 1 respectively with AVR monolithic
Three ADC conversion port PA1, PA2, PA3 of machine 2 connect, and the park mode of acceleration transducer 1 controls pin SELECT
MODE is connected with the PA0 pin of AVR single chip 2, and described acceleration transducer 1 uses acceleration transducer MMA7260,
AVR single chip 2 uses signal acquisition process chip ATmaga16, and ZigBee wireless communication module uses the Jennic second filial generation
JN5139。。
This detailed description of the invention utilizes acceleration transducer 1, be fixed on around projecting apparatus screen and be integrated into mouse-type laser electricity
Sub-chalk is in the JN5139 module 3 of compatible Zigbee protocol, according to certain algorithm, it is possible to obtains and moves in three dimensions
The location information of mouse-type electronic laser chalk, obtain the measured value of its inclination angle and acceleration, warp together with acceleration transducer 1
After crossing filtering removal noise, pass to already integrated into the AVR single chip system within mouse-type electronic laser chalk, Jing Guochu
Through wireless mouse receiver after step process, pass to computer system, after computer relative program processes again, obtain
Relevant location information, completes to map and location, by projector projects to the screen of projector on the computer screen.
Described acceleration transducer 1 uses a three axle high sensitivity acceleration transducer MMA7260, belongs to the three of Varied clearance formula
Axle acceleration sensor, variations in temperature is the least on sensing unit impact, and the linearity also is able to preferably meet use needs, energy
Falling, tilt, move, place, shake and waving of low gravitation level is read in three axial directions with high sensitivity；By
In being limited in scope of mouse-type electronic laser chalk space, because the size of the size of Conference Hall and projecting apparatus screen is limited
, in conjunction with These characteristics, first the type selecting of this device acceleration transducer focuses on the sensitivity of sensor, and next focuses on sensor
Range.
This MMA7260 sensor has: ± 1.5g, ± 2g, ± 4g are available with ± tetra-kinds of different ranges of 6g, correspond to not
Same sensitivity, MMA7260 consumes energy low (3 muA) in the hibernation mode；Under low power operation pattern, to be only 500 micro-for electric current
Peace, its fast response time is only 1ms；QFN packaging is small and exquisite, a size of 6mm × 6mm × 1.45mm, and sensor itself is internal
Be integrated with appearance pressure converter, voltage gain amplifies and the circuit of temperature-compensating, and MMA7260 peripheral circuit only need to be in each axial output
Increase resistance between pin and the pin of single-chip microcomputer and electric capacity sets up filter circuit.The output analogue signal of sensor was both wrapped
Containing direct current signal, also include AC signal, for extracting the acceleration information of accurate sensor, use capacitor filtering
Noise jamming in elimination analogue signal, and then the signal after denoising is transferred to the ADC mouth of AVR single chip 2, in native system
X, Y, Z 3-axis acceleration signal first passes through capacitor filtering, connects three ADC end of converts of AVR single chip 2 the most respectively
Mouth PA1, PA2, PA3, the park mode of sensor controls the pin PA0 phase of pin SELECT MODE and AVR single chip 2
Connect (such as Fig. 3).
The information on ADC Real-time Collection three axis accelerometer acceleration transducer 1 that AVR single chip 2 is built-in, wireless senser
The data that terminal node is sent by network aggregation node and the data tested oneself, after being filtered waiting process, be transferred to host computer system
System processes, and shows the person's handwriting of mouse-type electronic laser chalk on its screen.AVR single chip 2 uses atmel corp to produce
ATmega16 single-chip microcomputer, is 8 CMOS microcontrollers of low-power consumption based on the AVR risc architecture strengthened, and its structure is typical case
The inner core of AVR single chip, ATmega16 has 16K byte and has the In-System Programmable Flash of the ability of reading while write,
The SRAM (static storage internal memory) of 1K, the EEPROM (data space) of 512 bytes.The I/O mouth line of chip has 32,
General register has 32, debugging and programming in jtag interface supporting pieces, have 3 T/C with comparison pattern (intervalometer/
Enumerator), wherein 1 16 bit timing device, 28 bit timing devices.10, the 8 tunnel A/D interface of chip has optional difference
The function of input stage programmable-gain (TQFP encapsulation), chip has 1 universal synchronous/asynchronism transceiver (UART), 3 road PWM
Output, 1 despotic synchronization serial port SPI and TWI and 6 battery saving modes can being configured by software.ATmega 16
Superior performance, performs speed fast, easy to use, it is possible to the preferably acceleration information of acquisition process sensor.
The supply voltage of AVR single chip 2 is 5V, and acceleration transducer 1 is then that 3.3V powers, and therefore, power circuit part is adopted
With two voltage stabilizing chips respectively by power supply voltage stabilizing to 5V and 3.3V；The internal crystal oscillator of AVR single chip 2 is integrated with four kinds, i.e. 1MHz,
2MHz, 4MHz and 8MHz, can select different clock sources by differently configured fuse bit, it is also possible to when selecting to use external
Zhong Yuan, in this patent, clock circuit part uses outside 8MHz crystal oscillator；Communication circuit portion, AVR single chip 2
3 AD mouths gather the X-axis of sensor, Y-axis, Z axis information respectively, and the measurement range selection of acceleration transducer 1 passes through 2 I/O
Mouthful configuration, sensor wake up up or park mode selects also to be to be controlled by 1 I/O mouth of AVR single chip 2；This gathers
Process the employing electrification reset of external circuit；Arranging of the program burn writing of AVR (ATmaga16) single-chip microcomputer and chip internal clock is logical
Cross ISP detail programming circuit to carry out, its control chip interface circuit.
This detailed description of the invention uses Zigbee protocol MANET, and acp chip selects JN5139 module 3, utilizes JN5139 table
Patch module carries out the system development of Zigbee protocol based on IEEE802.15.4 and has that development cost is low and that the development time is short is excellent
Point, JN5139 module 3 is integrated with RF function, can be used directly, and JN5139 module 3 is integrated with 32 RISC process
Device, the transceiver of compatible 2.4G IEEE802.15.4, ROM (192kB deposits the system code comprising storehouse), RAM (96kB,
Storage system data and boot code), containing 2 DART, the ADC on 4 12, tunnels, 2 11, tunnel DAC, 5 in chip
Individual selectable SPI port, 3 system timers, 2 application timer/counter, 2 comparators, 2 road serial line interfaces
With 21 GPIO.The ROM/RAM framework support storage bootloaded of JN5139 module 3 is to application program during internal RAM
Code, module comprises battery saving mode and timed sleep pattern.This module is also integrated with hardware MAC and AES encryption accelerator, for
Security mechanism and key procedure code encryption, JN5139 module has a low cost, high efficiency, low-power consumption, versatility and expansible
The feature that property is strong.
When lecturer wants to use the bright spot of laser pen, when reminding spectators, it is only necessary to press switch key simply.It can be by
Any one common projection screen equivalence becomes computer screen, when lecturer thinks mouse function, it is only necessary to simply by incision
Change key, it is possible to as using laser pen, on projecting apparatus screen, use mouse function, without the support of mouse pad.With
Time this device there is the function of electronics chalk, speaker needs to write or during picture annotation, will or else need to roll screen or separately
White (black) plate of outer preparation one, as long as the button pressed on mouse-type electronic laser chalk, no matter distance projecting apparatus screen is many
Far (less than 15 meters), all can carry out sky-writing, picture, leave person's handwriting on projecting apparatus screen, the color of pen can be appointed
Meaning selects, and the content write can carry out preserving, printing etc..
This detailed description of the invention is a kind of brand-new computerized information input and controls device systems, and it uses semiconductor light source to produce
Bright spot indicates target location；Sensor and software and hardware signal processing technology is used to analyze coordinate of ground point in real time；Utilize microcontroller
Signal is modulated by device, thus is controlled the transmission of signal simultaneously；Communicate with computer, utilize the process of computer
Ability carries out projecting apparatus screen coordinates correction and signal analysis, it is achieved with the interactive operation of computer.Laser pen, laser are turned over
Page device, wireless mouse, electronic teacher pointer, Function Integration Mechanism to the equipment of electronics chalk, solve the said equipment and cannot assist mutually
Adjust the difficult problem used, and person's handwriting, complete function can be left on the screen of projector, use more convenient, have wide
Wealthy market application foreground.
The above is only the preferred embodiment of the present invention, it is noted that under the premise without departing from the principles of the invention, to the present invention
Some improvements and modifications of preferred implementation, also should be regarded as protection scope of the present invention.
Claims (4)
1. mouse-type electronic laser chalk, it is characterised in that include acceleration transducer (1), AVR single chip (2) and ZigBee
Wireless communication module (3), acceleration transducer (1) is connected with AVR single chip (2), AVR single chip (2) by UART interface with
ZigBee wireless communication module (3) connects, and AVR single chip (2) is further connected with power module (4), external clock (5), reset circuit (6)
With ISP debugging module (7), ZigBee wireless communication module (3) is connected with host computer (8) by the radio frequency chip of self, upper
Machine (8) is connected with the projector (10) arranged facing to screen (9), and described acceleration transducer (1) uses acceleration transducer
MMA7260, AVR single chip (2) uses signal acquisition process chip ATmaga16, and ZigBee wireless communication module uses Jennic
Second filial generation JN5139..
Mouse-type electronic laser chalk the most according to claim 1, it is characterised in that described acceleration transducer (1)
3-axis acceleration signal end X-OUT, Y-OUT, Z-OUT respectively with three ADC conversion port PA1 of AVR single chip (2), PA2,
PA3 connects, and the park mode of acceleration transducer (1) controls the PAO pin of pin SELECT MODE and AVR single chip (2)
It is connected.
Mouse-type electronic laser chalk the most according to claim 1, it is characterised in that described screen (9) is the most fixing
There are several ZigBee wireless communication modules (3).
Mouse-type electronic laser chalk the most according to claim 1, it is characterised in that described AVR single chip (2) with
The AVR processing system of its peripheral circuit composition by the way of wireless sensor network and the transmission of two kinds of data of wireless WiFi with upper
Machine (8) connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610250643.0A CN105955512A (en) | 2016-04-18 | 2016-04-18 | Mouse-type laser electronic chalk |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610250643.0A CN105955512A (en) | 2016-04-18 | 2016-04-18 | Mouse-type laser electronic chalk |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105955512A true CN105955512A (en) | 2016-09-21 |
Family
ID=56917793
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201610250643.0A Pending CN105955512A (en) | 2016-04-18 | 2016-04-18 | Mouse-type laser electronic chalk |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2557285A (en) * | 2016-12-05 | 2018-06-20 | Meiban Int Pte Ltd | Smart working professional ring |
| CN109144375A (en) * | 2018-10-09 | 2019-01-04 | 中天智领（北京）科技有限公司 | A kind of screen control method and device |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN203405780U (en) * | 2013-08-05 | 2014-01-22 | 魏访 | Simulation mouse device in multimedia teaching |
| US20140049383A1 (en) * | 2005-08-19 | 2014-02-20 | Nexstep, Inc. | Tethered digital butler consumer electronic remote control device and method |
| CN204515703U (en) * | 2015-04-09 | 2015-07-29 | 任鹏 | A kind of new ideas PPT controls pen |
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2016
- 2016-04-18 CN CN201610250643.0A patent/CN105955512A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20140049383A1 (en) * | 2005-08-19 | 2014-02-20 | Nexstep, Inc. | Tethered digital butler consumer electronic remote control device and method |
| CN203405780U (en) * | 2013-08-05 | 2014-01-22 | 魏访 | Simulation mouse device in multimedia teaching |
| CN204515703U (en) * | 2015-04-09 | 2015-07-29 | 任鹏 | A kind of new ideas PPT controls pen |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2557285A (en) * | 2016-12-05 | 2018-06-20 | Meiban Int Pte Ltd | Smart working professional ring |
| CN109144375A (en) * | 2018-10-09 | 2019-01-04 | 中天智领（北京）科技有限公司 | A kind of screen control method and device |
| CN109144375B (en) * | 2018-10-09 | 2022-08-19 | 中天智领（北京）科技有限公司 | Screen control method and device |
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Application publication date: 20160921 |