CN103646584B - A kind of multifunctional demonstration pen - Google Patents
A kind of multifunctional demonstration pen Download PDFInfo
- Publication number
- CN103646584B CN103646584B CN201310616592.5A CN201310616592A CN103646584B CN 103646584 B CN103646584 B CN 103646584B CN 201310616592 A CN201310616592 A CN 201310616592A CN 103646584 B CN103646584 B CN 103646584B
- Authority
- CN
- China
- Prior art keywords
- data
- pointer
- audio signal
- ppt
- module
- 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.)
- Expired - Fee Related
Links
Landscapes
- Position Input By Displaying (AREA)
Abstract
The invention discloses a kind of Multifunctional demonstration pen data transmission and product.The data transmission method of multifunctional demonstration pen, for synchrodata, every kind of data acquisition dedicated channel is transmitted, and for asynchronous data, shares a transmission, and different asynchronous data packets harness has different packet header to become packet.The method compatible prior art can ensure response time.A kind of multifunctional demonstration pen, device, wireless receiving module and wireless transmitter module is controlled including a body, teacher's pointer, audio signal collection device, sound volume control device, PPT, teacher's pointer is arranged on a body top, audio signal collection device is arranged on bottom a body, sound volume control device is arranged on a body side, PPT controls device and is arranged on a body surface, wireless transmitter module is arranged on inside a body, launching audio signal, volume control signal, PPT control signal and/or data signal, wireless receiving module embeds a body.This multifunctional demonstration pen can pick up sound while demonstration, and complete function is reasonable, it is simple to carry.
Description
Technical field
The invention belongs to electrically operated teaching aid field, more particularly, to a kind of Multifunctional demonstration pen data
Transmission method and product.
Background technology
In teaching process and when meeting-place is reported, keynoter, generally use demonstration pen to indicate at a distance
The content of demonstration board.Demonstration pen is generally of laser pointer function, can launch laser, demonstrate a long way off
Form hot spot on plate, thus indicate content.Demonstration pen helps keynoter and audience to link up, make classroom or
Speech content is more lively, makes keynoter can leave demo one segment distance, flexible and convenient operation simultaneously.
Current most of demonstration pen also has page-turning function, when using electronic presentations document (Power
Point, PPT) time, the most also there is page-turning function, demonstration pen can be used to control display on computer
PPT page turning.Also occur in that integrated microphone, laser pointer and the equipment of PPT page-turning function, such set
Although standby can allow user without hand-held multiple equipment, but when microphone and laser pointer use, in order to
Obtaining preferable effect, hand-held direction is different, when using laser pointer instruction demonstration board at a distance, it is impossible to
Time use microphone, cause use inconvenience.
Summary of the invention
For disadvantages described above or the Improvement requirement of prior art, the invention provides a kind of Multifunctional demonstration
Pen data transmission method and product, its object is to ensure multifunctional demonstration pen response in time, setting is drilled
Show that a pointer function and microphone, with energy, allow user while using demonstration pen pointer function, use
Microphone obtains preferable amplifying effect, thus solves needs when current keynoter needs to use demonstration pen same
Time use other public address equipments such as microphone such as to cause inconvenient technical problem.
For achieving the above object, according to one aspect of the present invention, it is provided that a kind of multifunctional demonstration pen
Data transmission method, for synchrodata, every kind of synchrodata uses special transmission, right
In asynchronous data, sharing a transmission, different asynchronous datas is packaged into has different packet header number
It is used for distinguishing different types of asynchronous data according to wrapping described packet header.
Preferably, the data transmission method of described multifunctional demonstration pen, its synchrodata includes that audio frequency is believed
Number, mouse control data, its asynchronous data includes that PPT controls data, volume control data.
It is another aspect of this invention to provide that provide a kind of multifunctional demonstration pen, including a body, teacher's pointer,
Audio signal collection device, sound volume control device, PPT control device, wireless receiving module, wireless
Penetrating module, described teacher's pointer is arranged on a body top, and described audio signal collection device is arranged at the bottom of a body
Portion, described sound volume control device is arranged on a body side, and described PPT controls device and is arranged on a body table
Face, described wireless transmitter module is arranged on inside a body, is used for launching audio signal, volume control letter
Number, PPT control signal and/or data signal, described audio signal collection device, sound volume control device,
PPT controls device and electrically connects with wireless transmitter module, and described wireless receiving module embeds a body, connects number
Connect with corresponding reception device according to taking out from a body when receiving device, be used for receiving wireless transmitter module
Send signal and send reception device to.
Preferably, described demonstration pen, also include that time set and display screen, described time set set
Putting inside a body, be used for providing the time and/or realizing clocking capability, described display screen is arranged on a body
Surface, is used for showing time, time status, time set information, electric quantity of power supply situation.
Preferably, described demonstration pen, its teacher's pointer is retractable pointer, laser pointer and mouse control
One or more in device, wherein mouse controller electrically connects with described wireless launcher.
Preferably, described demonstration pen, its audio signal collection device is micro audio signal collector.
Preferably, described demonstration pen, its wireless receiving module uses USB interface and receives device even
Connect.
Preferably, described demonstration pen, its wireless receiving module is provided simultaneously with storing data function, nothing
Line receiver module transmits signal and storage data share a USB interface to receiving device.
Preferably, described demonstration pen, it receives device can realize audio output function.
Preferably, described demonstration pen, it receives device can realize PowerPoint control, digital independent
One or both in function.
In general, by the contemplated above technical scheme of the present invention compared with prior art, due to
The ingenious setting of each parts, it is possible to obtain following beneficial effect:
(1) needing to transmit synchrodata and asynchronous data due to described demonstration pen, synchrodata is such as simultaneously
Audio signal data, mouse control data, asynchronous data such as PPT control signal, volume control signal
Deng, therefore higher to transmission requirement of real-time, the present invention uses independent letter for each synchrodata
Road transmits, and can guarantee that each synchrodata obtains real-time response, uses for all of asynchronous data
Same transmission, can improve channel utilization, ensures response time simultaneously, thus keeps good
Consumer's Experience.
(2) teacher's pointer and microphone audio signal receive device and are separately positioned on top and the end of demonstration pen
Portion, makes keynoter while using teacher's pointer, and audio collection device is exactly in preferably operating position,
The voice of orator can be picked up clearly.
(3) volume control button is arranged on the side of demonstration pen body, keynoter use demonstration pen time,
Finger is exactly in the convenient position controlling microphone volume control knob, can control mike sound at any time
Frequently output volume.
(4) audio signal, PPT control signal and data signal, all pass through wireless transmitter module and nothing
Line receiver module sends reception device to, achieves multiple data-transformation facility by an interface.
(5) each same energy region of the diverse location appropriate design of demonstration pen body, equipment size is less, side
Portable belt, has instruction content, controls PowerPoint, sound amplification function, meet the various of general speech
Demand.
Preferred version, described demonstration pen is also integrated with time and clocking capability, facilitates keynoter, controls
The speech time;Described demonstration pen wireless receiving module uses USB interface, can set with most reception
Standby cooperation, autgmentability is strong;Described demonstration pen wireless receiving module is provided simultaneously with storing the function of data,
When using USB interface, USB flash disk can be made and use, facilitate keynoter to prepare a speech material, without separately
Prepare mobile data memory unit;Described demonstration pen has display screen, except can show temporal information,
Beyond time status, time set information, electric quantity of power supply, different according to functions of the equipments, moreover it is possible to display
Other extend information, such as information such as memorizer remaining space, information volume, signal intensitys.
Teacher's pointer described in demonstration pen is that the instructions such as retractable pointer, laser pointer, mouse controller are delivered a speech
One or more in the mode of content.The most polytype teacher's pointer, is suitable for the need of different situations
Ask, indicate nearer speech plate, use flexible teacher's pointer speech effect more preferable, instruction speech plate farther out,
Use laser pointer is more convenient, and multiple speech plates indicate content simultaneously, uses mouse controller to refer to
Show the effect that can reach to synchronize instruction.The mode of the integrated multiple instruction speech content of preferred version, can fit
Answer the demand of different speech situations, convenient, flexible.
Accompanying drawing explanation
Fig. 1 is the axonometric chart of embodiment 2;
Fig. 2 is the top view of embodiment 2;
Fig. 3 is the front view of embodiment 2;
Fig. 4 is the upward view of embodiment 2;
Fig. 5 is the schematic diagram of embodiment 2 receiving terminal;
Fig. 6 is embodiment 2 right view;
Fig. 7 is the rearview of embodiment 2.
In all of the figs, identical reference is used for representing identical element or structure, wherein:
201 is retractable pointer, and 202 is laser pointer, and 301 is LED display, and 302 is LED
Display screen shift knob, 303 is LED display backlight button, and 304 press for LED display set of time
Button, 305 is other function selecting keys of LED display, and 306 is page-turning button on PowerPoint, 307
For laser pointer/mouse controller switch, 308 is page-turning button under PowerPoint, and 401 is solid for teacher's pointer
Determining screw, 402 wireless receiving modules, 403 is micro audio signal collection device, and 601 open for power supply
Closing, 602 control bar, 701 power supplys for volume.
Detailed description of the invention
In order to make the purpose of the present invention, technical scheme and advantage clearer, below in conjunction with accompanying drawing
And embodiment, the present invention is further elaborated.Should be appreciated that described herein specifically
Embodiment only in order to explain the present invention, is not intended to limit the present invention.Additionally, it is disclosed below
Just may be used as long as technical characteristic involved in each embodiment of the present invention does not constitutes conflict each other
To be mutually combined.
The data transmission method of a kind of multifunctional demonstration pen that the present invention provides, for synchrodata, often
Plant synchrodata and use special transmission, for asynchronous data, share a transmission, no
With asynchronous data be packaged into packet, packet has packet header, is used for distinguishing different types of asynchronous
Data.Wherein synchrodata includes audio signal data, mouse control data, described asynchronous data packets
Include PPT and control data, volume control data.The data transmission method that the present invention provides, can use indigo plant
Tooth technology realizes.
The demonstration pen that the present invention provides, including a body, teacher's pointer, audio signal collection device, volume control
Device processed, PPT control device, wireless transmitter module, wireless receiving module and power supply.
Described teacher's pointer is arranged on a body top, and described teacher's pointer can be flexible teacher's pointer, laser pointer and mouse
One or more of controller, when there is multiple teacher's pointer form, multiple teacher's pointer form can use simultaneously
Or select to use.The body of rod merogenesis of described flexible teacher's pointer, there is pole cap on body of rod top, and the body of rod respectively saves intussusception
Together, when not using, the body of rod is collected in inside demonstration pen, holds pole cap and extract the body of rod out during use.Institute
State laser pointer, hot spot instruction content can be formed on demonstration board.Described mouse controller, by passing
Sensor judges the user control to mouse, will control data by wireless transmitter module and wireless receiving
Module sends connecting computer receiving apparatus to, it is achieved computer mouse controls instruction content.Described audio signal is received
Packaging is set to micro audio signal collection device, is arranged on bottom a body, when using teacher's pointer, and audio frequency
Signal collection device is in the position of closer user naturally, it is achieved audio signal collecting function, and
Convert audio signals into data, be sent to data by wireless transmitter module and wireless receiving module and connect
Receiving apparatus.Described sound volume control device is arranged on a body side, for controlling the volume of public address equipment,
The operation of keynoter is converted into volume control signal by sound volume control device, by wireless transmitter module and
Wireless receiving module is sent to data sink.Described PPT control device is arranged on a body surface,
Facilitate orator's control, be used for controlling page turning and lower page turning on PowerPoint.Described wireless transmitter module
It is arranged on inside demonstration pen, by wireless signal, audio signal, volume control signal, PPT is controlled
The Multifunctional demonstration pen data transmission that signal and/or data signal provide according to the present invention is compiled
Code is also sent to wireless receiving module.Described wireless receiving module embeds a body, connects data receiver dress
Take out from a body when putting and connect with corresponding reception device, for receiving the nothing that wireless transmitter module is launched
Line signal, and wireless signal is decoded, it is achieved operate accordingly or transmit corresponding data.Wireless
Receiver module can use USB interface to be connected with receiving device, and wireless receiving module also can have data and deposit
Storage function, now can use as USB flash disk, it is simple to the data used when carrying speech.
Audio signal collection device, sound volume control device, PPT control device, mouse controller with wireless
Transmitter module electrically connects.
The reception device that wireless receiver is connected, can realize audio output function, can realize amplifying,
If reading the audio amplifier of voice data, receiving device simultaneously and also can realize PowerPoint control, data reading
Take function, such as computer.
Preferred version, described multifunctional demonstration pen, also include time set and display screen.Described timing
Device is arranged on inside a body, it is possible to provide time function and/or clocking capability, and time function includes: time
Between calibration, local zone time, zebra time, timing function, clocking capability include the calculating time, fall meter
Time, stop watch function.Described display screen is arranged on a body surface, be used for showing the time, time status,
Time set information, charge condition.
It is below embodiment:
Embodiment 1
The demonstration pen data transmission method that the present invention provides, can use Bluetooth technology to realize.Bluetooth technology
Three synchronous data channels and an asynchronous data channel can be supported simultaneously.Synchrodata for need and
Time be sent to the data of receiving terminal, including audio signal and mouse control signal, be respectively adopted a biography
Defeated speed is that the synchronizing channel of 64kb/s is as its transmission channel.Asynchronous data is for having allowed certain time-delay
Data, including PPT control signal and volume control signal, all of asynchronous data uses same
One end maximum rate is 721kb/s, and the dissymmetrical channel or that other end speed is 57.6kb/s
Bar speed is the symmetrical connection of 432.6kb/s.PPT control signal and volume control signal use and are packaged into
Packet sends, and packet header uses different condition codes, is used for identifying different types of asynchronous data.
Use the data transmission method of the demonstration pen of present invention offer, owing to using independent for synchrodata
Transmission, can reach 64kb/s in the transfer rate making synchrodata, thus ensure synchrodata
Efficiency of transmission, asynchronous data is owing to being not all to occur in each moment simultaneously, and the probability simultaneously occurred
The lowest, therefore use same transmission, it is possible to increase channel utilization.
Embodiment 2
The demonstration pen preferred embodiment that the present invention provides, as shown in Figure 1.Demonstration pen pen is as fillet square
Shape, the size that applicable human body is held.
Body top, as in figure 2 it is shown, be provided with retractable pointer 201, laser pointer 202, flexible religion
Whip is fixed in a body by screw 401, holds the pole cap of flexible teacher's pointer during use, extracts flexible religion out
Whip, the teacher's pointer shaft that stretches when not using respectively saves and is nested together being collected in inside a body.Mouse controller
By being arranged on inside a body, pass through gravity sensing device, it is achieved mouse control.
Body front, as it is shown on figure 3, be provided with LED display 301, LED display shift knob 302,
LED display backlight button 303, LED display set of time button 304, other functions of LED display
Select page-turning button 306 on key 305, PowerPoint, laser pointer/mouse controller switch 307 and
Page-turning button 308 under PowerPoint.LED display is opened and closed by LED display on-off control,
Current time can be shown during unlatching, facilitate keynoter to control speech progress, when dark is, can lead to
Cross and pin LED-backlit switch, open LED screen backlight.Prover time is, can be by pinning the time
Settings button controls the part needing to adjust, and needs adjustment member flicker occur, now uses demonstration
The upper and lower page turning key of manuscript adjusts numerical value.Laser pointer/Mus is pinned when keynoter needs and uses laser pointer
Mark controller switch 307, launches laser, forms hot spot, and need to use mouse control on demonstration board
During device, switched twice by laser pointer/mouse controller by continuity point, it is achieved open mouse controller
With closedown mouse controller.
Bottom body, as shown in Figure 4, it is provided with teacher's pointer fixed screw 401, wireless receiving module 402 and
Micro audio signal collection device 403.Teacher's pointer fixed screw is used for fixing flexible teacher's pointer 201.Wireless connect
Receive module 402 and use suction-type structure, embed a body, extract from a body during use, be connected with computer.
Wireless receiving module uses USB interface, as it is shown in figure 5, be arranged within a body wireless can be received
Signal that transmitter module is launched also decodes, it is achieved corresponding operation or data transmission, wireless receiving simultaneously
Module also has storage function, can use as USB flash disk, facilitates orator to carry the documents such as PowerPoint.
Body side, as shown in Figure 6, is provided with on and off switch 601 and volume controls bar 602.By point
Power supply can be switched off or on by and off switch 601.Control bar 602 by stirring volume up and down, can control
The public address equipment volume of attachment means adjusts, when volume is adjusted to minimum, for quiet;It is adjusted to maximum
Time, public address equipment works with peak power.
Face carried on the body by pen, as it is shown in fig. 7, be provided with power supply 701, power supply is aneroid battery and battery compartment.
Audio signal collection device, sound volume control device, PPT control device, mouse controller with wireless
Transmitter module electrically connects.
As it will be easily appreciated by one skilled in the art that and the foregoing is only presently preferred embodiments of the present invention,
Not in order to limit the present invention, all made within the spirit and principles in the present invention any amendment, etc.
With replacement and improvement etc., should be included within the scope of the present invention.
Claims (1)
1. a multifunctional demonstration pen, it is characterised in that include that a body, teacher's pointer, audio signal are collected
Device, sound volume control device, PPT control device, wireless receiving module and wireless transmitter module, described
Teacher's pointer is retractable pointer, laser pointer and mouse controller, wherein retractable pointer and laser pointer
Being arranged on a body top, mouse controller is arranged on inside a body;Described audio signal collection device sets
Putting bottom a body, described sound volume control device is arranged on a body side, and described PPT controls device and sets
Putting on a body surface, described wireless transmitter module is arranged on inside a body, be used for launching audio signal,
Volume control signal, PPT control signal and/or mouse control signal, described audio signal collection device,
Sound volume control device, PPT control device and mouse controller electrically connects with wireless transmitter module, institute
State wireless receiving module and embed a body, take out from a body when connecting data sink and receive with corresponding
Device connects, for receiving the signal of wireless transmitter module transmission and sending reception device to;
Described demonstration pen also includes that time set and display screen, described time set are arranged on inside a body,
For providing the time and/or realizing clocking capability, described display screen is arranged on a body surface, is used for showing
Time, time status, time set information, electric quantity of power supply situation;
Described audio signal collection device is micro audio signal collector;
Described wireless receiving module uses USB interface to be connected with receiving device;
Described wireless receiving module be provided simultaneously with store data function, wireless receiving module transmit signal and
Storage data share a USB interface to reception device;
Described reception device can realize audio output function;
Described reception device can realize one or both in PowerPoint control, digital independent function;
Described demonstration pen includes synchronous data transmission module and simultaneous asynchronous data transmissions module:
Described synchronous data transmission module, for for synchrodata, every kind of synchrodata uses special
Transmission;
Described simultaneous asynchronous data transmissions module, for for asynchronous data, shares a transmission, no
Same asynchronous data is packaged into the packet with different packet header, and described packet header is used for distinguishing variety classes
Asynchronous data;
Described synchrodata includes that audio signal data, mouse control data, described asynchronous data include
PPT controls data, volume control data.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310616592.5A CN103646584B (en) | 2013-11-27 | 2013-11-27 | A kind of multifunctional demonstration pen |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
CN201310616592.5A CN103646584B (en) | 2013-11-27 | 2013-11-27 | A kind of multifunctional demonstration pen |
Publications (2)
Publication Number | Publication Date |
---|---|
CN103646584A CN103646584A (en) | 2014-03-19 |
CN103646584B true CN103646584B (en) | 2017-01-04 |
Family
ID=50251790
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
CN201310616592.5A Expired - Fee Related CN103646584B (en) | 2013-11-27 | 2013-11-27 | A kind of multifunctional demonstration pen |
Country Status (1)
Country | Link |
---|---|
CN (1) | CN103646584B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN108769970A (en) * | 2018-07-03 | 2018-11-06 | 安徽声讯信息技术有限公司 | A kind of blue tooth transmission system of voice PPT page turners |
CN110321015A (en) * | 2019-03-27 | 2019-10-11 | 广东技术师范学院天河学院 | A kind of electronic pen |
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 |
CN111063236A (en) * | 2019-12-30 | 2020-04-24 | 赣南医学院 | Telescopic pointer with storage function |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201035724Y (en) * | 2007-04-13 | 2008-03-12 | 深圳市融合视讯科技有限公司 | Multifunctional multimedia remote controller |
CN202008634U (en) * | 2011-03-04 | 2011-10-12 | 黄文旺 | Pen-holder-shaped mouse and device combining same with microphone |
CN202230449U (en) * | 2011-09-05 | 2012-05-23 | 成都成电天悦信息技术有限公司 | Wireless electronic equipment integrating microphone, mouse, laser pointer and page-turning functions |
CN202495158U (en) * | 2012-01-18 | 2012-10-17 | 赖俊源 | Laser pen |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20010025289A1 (en) * | 1998-09-25 | 2001-09-27 | Jenkins Michael D. | Wireless pen input device |
CN2699398Y (en) * | 2004-01-17 | 2005-05-11 | 秦斌 | Electronic pointer |
TWM269651U (en) * | 2005-01-05 | 2005-07-01 | Wei-Jung Lin | Radio transceivers |
CN100409161C (en) * | 2005-06-28 | 2008-08-06 | 英群企业股份有限公司 | Multifunction demonstration text mouse |
CN2906788Y (en) * | 2006-04-14 | 2007-05-30 | 深圳大学 | Multimedia teaching device |
CN102243542A (en) * | 2011-08-03 | 2011-11-16 | 鲁帅帅 | Mouse stylus pen |
CN202394411U (en) * | 2011-12-10 | 2012-08-22 | 张康 | Pointer with recording function |
CN202584051U (en) * | 2012-05-29 | 2012-12-05 | 罗兆汇 | Multifunctional voice page turning pen |
CN203733345U (en) * | 2013-11-27 | 2014-07-23 | 华中科技大学 | Multifunctional demonstration pen |
-
2013
- 2013-11-27 CN CN201310616592.5A patent/CN103646584B/en not_active Expired - Fee Related
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN201035724Y (en) * | 2007-04-13 | 2008-03-12 | 深圳市融合视讯科技有限公司 | Multifunctional multimedia remote controller |
CN202008634U (en) * | 2011-03-04 | 2011-10-12 | 黄文旺 | Pen-holder-shaped mouse and device combining same with microphone |
CN202230449U (en) * | 2011-09-05 | 2012-05-23 | 成都成电天悦信息技术有限公司 | Wireless electronic equipment integrating microphone, mouse, laser pointer and page-turning functions |
CN202495158U (en) * | 2012-01-18 | 2012-10-17 | 赖俊源 | Laser pen |
Also Published As
Publication number | Publication date |
---|---|
CN103646584A (en) | 2014-03-19 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
CN103646584B (en) | A kind of multifunctional demonstration pen | |
CN205792848U (en) | The portable power source of band digital intercom module based on intelligent mobile terminal | |
CN102568188A (en) | Infrared remote control device and method for intelligent host | |
CN207096721U (en) | A kind of blue Tooth remote controller | |
CN202502615U (en) | Infrared remote control device for smart host | |
EP2242225A3 (en) | Radio communication system | |
CN203733345U (en) | Multifunctional demonstration pen | |
CN206038921U (en) | Audio frequency and video life detector | |
CN204968057U (en) | Wireless microphone with functions of recording, PPT page turning, laser pointer and wireless mouse | |
CN209435389U (en) | A kind of UHF wireless data transmission microphone | |
CN102157080A (en) | Method for broadcasting classroom screen contents based on electronic paper reading devices | |
CN205283761U (en) | Portable wireless microphone | |
CN212727255U (en) | Wireless microphone system with voice search function | |
CN210627560U (en) | Laser page turning interpreter | |
CN202422411U (en) | Bidirectional communication device for multimedia equipment | |
CN204856403U (en) | A multi functional remote device for multimedia presentation | |
CN204189332U (en) | A kind of multi-functional PPT Pen for turning page for Political Teaching | |
CN204331567U (en) | Based on wireless sounder resonator, microphone, camera in the computer peripheral equipment of one | |
CN203799189U (en) | Remote control clock with LED lighting function | |
CN203606792U (en) | Novel mouse | |
CN207665146U (en) | A kind of remote online education wireless microphone | |
CN203225815U (en) | Remote control module of telephone | |
CN203910009U (en) | Hydrologic monitoring data transmitter | |
CN204190849U (en) | A kind of multi-function TV set sound accompaniment device | |
CN202534262U (en) | Terrestrial globe with book structure |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
PB01 | Publication | ||
PB01 | Publication | ||
C10 | Entry into substantive examination | ||
SE01 | Entry into force of request for substantive examination | ||
C14 | Grant of patent or utility model | ||
GR01 | Patent grant | ||
CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170104 Termination date: 20171127 |
|
CF01 | Termination of patent right due to non-payment of annual fee |