CN101325755A - Mobile electronic device - Google Patents
Mobile electronic device Download PDFInfo
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- CN101325755A CN101325755A CNA2007100286475A CN200710028647A CN101325755A CN 101325755 A CN101325755 A CN 101325755A CN A2007100286475 A CNA2007100286475 A CN A2007100286475A CN 200710028647 A CN200710028647 A CN 200710028647A CN 101325755 A CN101325755 A CN 101325755A
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Abstract
The invention provides a mobile electronic device, comprising a locating pen and a locating module. The locating pen had at least a supersonic converter near the pen point; the locating module has a processing unit, an output communication unit connected with the processing unit and at least two supersonic converters; the supersonic converter is associated with the supersonic converter is the locating pen to supersonically locate the locating pen and send the locating signal; the processing unit processes the locating signal and outputs the position signal of the locating pen through the output communication unit. The mobile electronic device further has a bistable display module; the bistable display module has a display screen drive unit, a bistable display screen connected with the display screen drive unit, an image buffer caching unit and an input communication unit; the input communication unit receives the position signal of the locating pen output by the locating output module and transmits to the display screen drive unit; the display screen drive unit processes the position signal of the locating pen and stores in the image buffer caching unit or displays on the bistable display screen.
Description
Affiliated technical field
The present invention relates to a kind of electronic apparatus, especially in regard to a kind of portable wireless mobile communications device, it utilizes hand-written module that hand-written information is shown on the bistable state display screen.
Background technology
Electronic apparatus has been widely used in the daily life at present, as mobile phone, personal digital assistant, multimedia playing apparatus, hand-hold type satellite navigator etc.Can control by the mode of man-machine communications such as natural-sounding, key board unit, multifunction key or hand-written module for these electronic apparatus.
Because natural-sounding meets the human custom of linking up most, therefore, in the mode of these man-machine communications, most convenient no more than utilizing the natural-sounding mode of electronic apparatus being controlled by phonetic order.Yet the man-machine communication way that utilizes natural-sounding is because greatly and still prematurities of variability such as language, accent, custom spoken languages.And though the mode of utilizing the man-machine communication of key board unit meets the use a computer custom of operation of people for a long time, along with the miniaturization of electronic apparatus, makes that the letter key on the electronic apparatus keyboard is too small, thereby quite inconvenience in the use.Therefore a button of electronic apparatus is represented multiple function and formed the quantity of multifunction key with effective minimizing button, the man-machine communication way of this kind being applied in the electronic apparatus gradually, but multifunction key is often because represent function numerous, if the user does not use for a long time, or when having a fairly large number of portable electric device, to produce the multifunction key using method of different machines and different vendor and obscure, therefore can not satisfy the requirement of the man-machine communication way judicial convenience of electronic apparatus.
In order to address the above problem, occurred utilizing hand-written module handwriting functions to carry out the hand-written communication way of man-machine communication, this kind mode relatively meets the custom that people write traditionally.The assistance of hand-written communication way by the text-recognition program is directly write literal, picture etc. and is input among the electronic product.Existing hand-written module is used resistance type touch control screen usually, and it is made by recombination processes such as printing, etching, flushing, applyings by bottom glass substrate, separaant and glued membrane.Because the resistance type touch control screen cost of manufacture is low, it is used more and more widely, but because in use, resistance type touch control screen tends to because improper use and scratch glued membrane, or produce changes in material and occur separating, or optics diffraction and produce shortcoming such as flake line, though therefore this touch screen provides the convenience of handwriting input, also have certain disadvantages.
Therefore, the hand-written module of applying resistance type touch control screen on the display screen of electronic apparatus has appearred, as shown in Figure 1.The screen 11 ' of electronic apparatus 10 ' shown in Figure 1 be display screen also be touch screen, when the user utilizes input pen 12 ' directly to write on screen, can directly carry out literal, the input of image, because this touch screen is that resistance type touch control screen is fitted on the display screen, so can't separate use, if arbitrary act of screen of the careless damage of user, all need integral replacing, and because the power consumption of display screen is big, need backlight to supply with light source again, so this electronic apparatus takes normal charging with the maintenance usability, and when power-off, this display screen is promptly closed, and does not read and writing style so meet the traditional document of user.
Summary of the invention
The present invention is directed to above-mentioned defective and a kind of electronic apparatus is provided, utilize hand-written module that hand-written information is shown in the bistable state display screen or be presented at projection display screen or be stored in image and cushion on the buffer unit.
For reaching above-mentioned purpose, the invention provides a kind of electronic apparatus, comprise locating module, pen with means for holding it in right position and bi-stable display module.Output communication unit and at least two ultrasonic transducers of having processing unit in this locating module and being connected with processing unit, pen with means for holding it in right position partly has at least one ultrasonic transducers near nib, ultrasonic transducers in the locating module cooperates with ultrasonic transducers in the pen with means for holding it in right position and this pen with means for holding it in right position is done the ultrasonic waves location and sent framing signal, and processing unit is handled framing signal and passed through the output communication unit and export the pen with means for holding it in right position position signalling.Bistable state shows module and has display screen driver element and the bistable state display screen that is connected with the display screen driver element, image buffering buffer unit and input communication unit, the input communication unit receives the pen with means for holding it in right position position signalling of locating module output and is delivered to the display screen driver element, and the display screen driver element is handled and is stored in image buffering buffer unit to the pen with means for holding it in right position position signalling or is presented on the bistable state display screen.
For reaching above-mentioned purpose, the invention provides another kind of electronic apparatus, comprise locating module, pen with means for holding it in right position and bi-stable display module.At least two ultrasonic transducers that have processing unit in this locating module and be connected with processing unit, pen with means for holding it in right position partly has at least one ultrasonic transducers near nib, ultrasonic transducers in the locating module cooperates with ultrasonic transducers in the pen with means for holding it in right position and this pen with means for holding it in right position is done the ultrasonic waves location and sent framing signal, and processing unit is to the framing signal processing and export the pen with means for holding it in right position position signalling.Bistable state shows the bistable state display screen that module has the display screen driver element and is connected with the display screen driver element, and this display screen driver element is connected with processing unit to receive the pen with means for holding it in right position position signalling and to be presented on the bistable state display screen.
For reaching above-mentioned purpose, the present invention also provides a kind of electronic apparatus, comprises locating module, pen with means for holding it in right position and projection module.Projection module can and locating module between carry out signal transmission, pen with means for holding it in right position is write on paper, output communication unit and at least two ultrasonic transducers of having processing unit in this locating module and being connected with processing unit, pen with means for holding it in right position partly has a ultrasonic transducers near nib, and the ultrasonic transducers system in the locating module cooperates with the ultrasonic transducers in the pen with means for holding it in right position does the ultrasonic waves location and send framing signal this pen with means for holding it in right position.Projection module has projection drive unit and the projection display screen that is connected with projection drive unit, image buffering buffer unit and input communication unit, the input communication unit receives the pen with means for holding it in right position position signalling of locating module output and is delivered to projection drive unit, and projection drive unit is handled and is stored in image buffering buffer unit to the pen with means for holding it in right position position signalling or is presented on the projection display screen.
The present invention can realize hand-written information is shown in the bistable state display screen or is presented at projection display screen or is stored on the image buffering buffer unit by hand-written module as mentioned above, and have the traditional type man-machine interface of handwriting device concurrently, not just user's use of folk prescription more increases the diversity of using.
Description of drawings
In Figure of description:
Fig. 1 is a kind of stereogram of common personal digital assistant;
Fig. 2 is the stereogram of electronic apparatus of the present invention, and it comprises locating module, pen with means for holding it in right position, display module and keyboard input module;
The stereogram that the locating module of Fig. 3 displayed map 2 separates with this display module;
Fig. 4-1 shows that a front end has the stereogram of the trip of a projection;
Fig. 4-2 shows that one is made up by two separated part, the stereogram of the trip that this separated part can mat external force be drawn back;
Fig. 5 shows that locating module utilizes aforesaid trip gripping paper, utilizes the built-in pencil lead of nib of pen with means for holding it in right position to write stereogram on this paper;
Fig. 6 is the system block diagram of locating module;
Bistable state display screen in Fig. 7 display module is made image system for transmitting block diagram by the wireless communication unit of wireless communication unit and locating module;
Fig. 8 does the system block diagram of data exchange by USB for the present invention;
Fig. 9 is the system block diagram of image output for the bindings such as projector of a locating module of the present invention and an outside;
Figure 10 show utilize locating module built-in multi-media player unit carry out the system block diagram that music is listened to;
Figure 11 is connected to reach the block diagram of the networking telephone as data with world-wide web by computer for the present invention;
Figure 12 is connected with world-wide web or mobile communication network to reach the voice or the block diagram of transfer of data by wireless communication unit for the present invention.
The description of reference numerals of each element is as follows among the figure:
Locating module 21 infrared ray sensors 312,612
Ultrasonic transducers 311,611,613 trips 214,511
Separated part 2141,2142 base stations 22
Wireless communication unit 63,914,101,105,714,723
USB 642,715,724 display screen driver elements 711
Image buffering buffer unit 712 bistable state display screens 713
Input and output interfaces unit 721 keyboards 722
Projection drive unit 911 image buffer rcgisters 912
Projection display screen 913 amplifiers 102
Loudspeaker 103 audio drivers 104
Earphone 106 computers 107
Electronic installation 10 ' screen 11 '
Input pen 12 '
Embodiment
For describing technology contents of the present invention, structural feature, the purpose that is realized and effect in detail, give explanation below in conjunction with execution mode and conjunction with figs. are detailed.
See also Fig. 2, this electronic apparatus comprises locating module 21, pen with means for holding it in right position 31, display module 41 and keyboard input module 51.Wherein have at least two ultrasonic transducers 611,613 in this locating module 21, this ultrasonic transducers 611,613 and pen with means for holding it in right position 31 are done the ultrasonic waves location near the ultrasonic transducers 311 of nib part, and these ultrasonic transducers 611,613,311 can be ultrasonic waves reflector and ultrasonic waves receiver.This ultrasonic transducers 311 that is positioned at pen with means for holding it in right position 31 is a ultrasonic waves reflector in the present embodiment, and ultrasonic transducers 611,613 is the ultrasonic waves receiver.Ultrasonic transducers 311 in the pen with means for holding it in right position 31 and locating module 21 interior ultrasonic transducers 611,613 cooperate the position to this pen with means for holding it in right position 31 to position.In order locating more accurately, also can be provided as the infrared ray sensor 312 of fired infra-red component in the pen with means for holding it in right position 31, and to be provided as the infrared ray sensor 612 of infrared receiver component in the locating module 21.
When this pen with means for holding it in right position 31 is slightly exerted pressure through users and started piezoelectric crystal or little switch that touches, to locate and write down the track of this pen with means for holding it in right position 31, and this written handwriting is shown in the display screen 411 in the display module 41, in the present embodiment, this display screen is a bistable state display screen, but inside filling cholesterol liquid crystal and become the cholesterol liquid crystal display screen, because during its power-off of bistable state display screen, still can keep display message, reach the effect of E-News paper so can not expend power supply.
See also Fig. 3, this locating module 21 and these display module 41 separable settings, it has a rectangular-shaped base station 22, the convex microscope carrier 23 that is provided with on the base station 22, described ultrasonic transducers 611,613 and infrared ray receiving unit 612 are arranged on the microscope carrier 23.Base station 22 is provided with the trip 214 of joining the rotary shaft that combines with this display module 41 card, when this locating module 21 separates with this display module 41, and this trip 214 90 degree of can transferring.See also Fig. 4-1 and Fig. 4-2, the front end of this trip 214 has the projection of an arc, in the guide groove that is sticked in display module 41 relative set.This trip 214 is combined by the separated part 2141,2142 that two elasticity press together, and this separated part 2141,2142 can be drawn back through external force, and inserts and puts paper 313 etc.Accordingly, this keyboard input module 51 also utilizes trip 511 to be external on this display module 41.
See also Fig. 5, this locating module 21 utilizes aforesaid trip 214 gripping paper 313, utilizes the built-in pencil lead of nib of pen with means for holding it in right position 31 to contact this paper 313 and writes.
In order further to understand technology contents of the present invention, can consult Fig. 6, it is the circuit block diagram in this locating module 21, ultrasonic transducers 611,613, infrared receiver component 612, external memory storage 621, internal storage 622, wireless communication unit 63 and USB 642 that the circuit in the locating module 21 has a processing unit 62 and is connected with processing unit 62.Wherein wireless communication unit 63 can be WiFi, WiMAX, GPRS, BlueTooth, Edge etc.
After activating this pen with means for holding it in right position 31, the infrared ray sensor 612 in the locating module 21 receives the infrared signal of infrared ray sensor 312 emissions of pen with means for holding it in right position 31, and processing unit 62 determines according to infrared signal whether pen with means for holding it in right position 31 is write.Ultrasonic transducers 611, the ultrasonic waves signal that 613 ultrasonic transducers 311 that receive this pen with means for holding it in right position 31 are sent, and the infrared signal that cooperates these infrared ray sensor 612 detecting pen with means for holding it in right position 31 to send, giving processing unit 62 together is stored in the external memory storage 621 according to the position that is stored in the program compute location pen 31 in the internal storage 622 and with the positional information of pen with means for holding it in right position 31, processing unit 62 can also transfer to the outside with the positional information of pen with means for holding it in right position 31 by wireless communication unit 63 or via USB 642, and the transmission mode of itself and external device (ED) is detailed later.Also can built-in one multi-media player unit 641 that is connected with processing unit 62 in this locating module 21, this multi-media player unit 641 can carry out that data obtains or the play multimedia archives by wireless communication unit 63 or by USB 642 and multimedia database, and can play by wireless communication unit 63 or by USB 642 and the multimedia playing apparatus that is connected such as earphone, loudspeaker, display etc., certainly also can be on aforesaid display module 41 with relevant information or multimedia.
Fig. 7 makes image system for transmitting block diagram for the bistable state display screen 713 in this display module by the wireless communication unit 714 and the wireless communication unit 63 of locating module 21, wherein signal of video signal is shown on this bistable state display screen 713 by the processing of display screen driver element 711 with image buffering buffer unit 712, simultaneously, this keyboard 722 is done the keyboard character input with input and output interfaces unit 721 and wireless communication unit 723 with the wireless communication unit 63 of this locating module 21.
Fig. 8 confluxes by data for the present invention and does the system block diagram of data exchange, be execution mode with the universal serial bus in the present embodiment, bistable state display screen 713 in this display module is done the image transmission by the USB 715 and the USB 642 of locating module 21, wherein signal of video signal is shown on this bistable state display screen 713 by the processing of display screen driver element 711 with image buffering buffer unit 712, simultaneously, these keyboard 722 USBs 724 are done the keyboard character input with the USB 642 of locating module 21.
Though what the present invention described is the execution mode of E-News paper, its display module 41 is a bistable state power conservation type display screen, but locating module of the present invention also can with the display of an outside, as TV, LCD, binding such as projector and be image output, its execution mode can be represented by Fig. 5 and Fig. 9, promptly as user during in the PowerPoint state, one paper 313 can be folded in the form that forms electronic whiteboard on this locating module 21, write on paper by pen with means for holding it in right position 31, and utilize wireless communication unit 63 simultaneously or by USB 642 and outside display online (it is example explanation that present embodiment adopts radio communication and projector), with hand-written explanation paint this directly be transferred in the projector and directly projection on projection screen, its by wireless communication unit 63 with hand-written signal of video signal be transferred to the wireless communication unit 914 of projection module, and after further this signal of video signal being delivered projection drive unit 911 and 912 processing of image buffer rcgister, be presented on the projection display screen 913, and by high candle-light lamp source with the signal of video signal projection on projection screen.
As shown in figure 10, show utilize locating module 21 built-in multi-media player unit 641 carry out the system block diagram that music is listened to, this wireless communication unit 63 in the present embodiment, 101,105 is the bluetooth communication unit, when each bluetooth-communication unit 63,101, when 105 foundation pairings are online, sound source signal reaches by the online amplifier 102 that transfers to of bluetooth, and and then promote loudspeaker 103, to carry out the broadcast of music, identical, these sound source signals are also by the online audio drivers 104 that transfers to of bluetooth, and and then play by earphone 106, so, the user also can carry out the broadcast of sound by locating module 21.Therefore, as shown in figure 11, when bluetooth-communication unit 63 and an outer computer 107 online, and this outer computer 107 is with world-wide web when online, the user can utilize this locating module 21 and the earphone 106 of Bluetooth pairing to carry out the networking telephone (Internet Telephony, as Skype, MSN, Google Talk, SIP service etc.) carry out talk with long-range user, in addition, because the digitlization handwriting of locating module 21 record, also can carry out the picture Freehandhand-drawing and link up and do the archives transmission with long-range user, also can transmit hand-written record, cooperate character recognition, can carry out the communication of literal by E-Mail.
Again with reference to Figure 12, in locating module 21, carry additionally large-scale storage device 108 (as hard disk), and drive bistable state display screen 110 by the display drivers 109 in the locating module 21, then locating module 21 can directly be communicated with world-wide web with WiFi or WiMAX by wireless communication unit 63, need not finish the whole network communication device by the connection of outer computer.Certainly, if embedded system is directly implanted in the internal storage 622 of locating module 21 (as ROM, EPPROM etc.), then these storage devices 108 also can omit, if this wireless communication unit 63 is GPRS, EDGE, 3G communications protocol in addition, then locating module 21 can be online with the wireless mobile communications base station, become as the mobile communications device as the mobile phone, and then become a user of mobile telephone network, therefore, the user can directly utilize the present invention to carry out the exchange of voice and data, and can carry out phone with other user and link up.
As shown in figure 12, this bistable state display screen (as cholesteric liquid crystal display screen, electrophoretic display panel or microcapsules electric ink display screen etc.) also can directly not be connected with this locating module 21, and by wireless and wired connection means that Fig. 7 and Fig. 8 showed and reach.
As mentioned above, the present invention can realize being shown in hand-written information on the bistable state display screen or being presented on the projection display screen or being stored in the image buffering buffer unit by hand-written module, and have the traditional type man-machine interface of handwriting device concurrently, not just user's use of folk prescription more increases the diversity of using.
Claims (10)
1. electronic apparatus, comprise pen with means for holding it in right position and locating module, pen with means for holding it in right position partly has at least one ultrasonic transducers near nib, locating module has processing unit, the output communication unit that is connected with processing unit and at least two ultrasonic transducers, ultrasonic transducers in ultrasonic transducers and the pen with means for holding it in right position cooperates and this pen with means for holding it in right position is done ultrasonic waves locate and send framing signal, this processing unit is handled framing signal and is exported the pen with means for holding it in right position position signalling by the output communication unit, it is characterized in that: this electronic apparatus also has a bistable state display module, bi-stable display module has the display screen driver element, the bistable state display screen that is connected with the display screen driver element, image buffering buffer unit and input communication unit, the input communication unit receives the pen with means for holding it in right position position signalling of locating module output and is delivered to the display screen driver element, and the display screen driver element is handled and is stored in image buffering buffer unit to the pen with means for holding it in right position position signalling or is presented on the bistable state display screen.
2. electronic apparatus according to claim 1 is characterized in that: described locating module has two output communication unit, and an output communication unit is a wireless communication unit, and another output communication unit is a USB; Bistable state shows module and has two input communication unit, and an input communication unit is a wireless communication unit, and another input communication unit is a USB.
3. electronic apparatus according to claim 2, it is characterized in that: this electronic apparatus also comprises a keyboard input module, this keyboard input module is separable to be fastened on the described bistable liquid crystal display screen, the keyboard input module has a USB, and the USB of this keyboard input module is connected with the USB of locating module.
4. electronic apparatus according to claim 1 is characterized in that: described locating module stretches out at least one trip towards an end of bistable state display screen, and this trip is joined with the separable card of this bistable state display screen and combined.
5. electronic apparatus according to claim 4 is characterized in that: described trip front end has a projection, and the bistable state display screen is correspondingly provided with guide groove, and projection is stuck in the guide groove.
6. electronic apparatus according to claim 1 is characterized in that: described locating module also has the multi-media player unit that is connected with processing unit.
7. electronic apparatus, comprise pen with means for holding it in right position and locating module, pen with means for holding it in right position partly has at least one ultrasonic transducers near nib, locating module has processing unit, the output communication unit that is connected with processing unit and at least two ultrasonic transducers, ultrasonic transducers in ultrasonic transducers and the pen with means for holding it in right position cooperates and this pen with means for holding it in right position is done ultrasonic waves locate and send framing signal, this processing unit is handled framing signal and is exported the pen with means for holding it in right position position signalling by the output communication unit, it is characterized in that: this electronic apparatus also has a bistable state display module, the bistable state display screen that bi-stable display module has the display screen driver element and is connected with the display screen driver element, and this display screen driver element is connected with processing unit to receive the pen with means for holding it in right position position signalling and to be presented on the bistable state display screen.
8. electronic apparatus according to claim 7 is characterized in that: described locating module also has the external memory storage that is connected with processing unit.
9. electronic apparatus, comprise pen with means for holding it in right position and locating module, pen with means for holding it in right position partly has at least one ultrasonic transducers near nib, locating module has processing unit, the output communication unit that is connected with processing unit and at least two ultrasonic transducers, ultrasonic transducers in ultrasonic transducers and the pen with means for holding it in right position cooperates and this pen with means for holding it in right position is done ultrasonic waves locate and send framing signal, this processing unit is handled framing signal and is exported the pen with means for holding it in right position position signalling by the output communication unit, it is characterized in that: this electronic apparatus also has a projection module, carry out the signal transmission between projection module and locating module, projection module has projection drive unit, the projection display screen that is connected with projection drive unit, image buffering buffer unit and input communication unit, the input communication unit receives the pen with means for holding it in right position position signalling of locating module output and is delivered to projection drive unit, and projection drive unit is handled the pen with means for holding it in right position position signalling.
10. electronic apparatus according to claim 9 is characterized in that: the trip of described locating module is made up of two separated part that can separate that press together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100286475A CN101325755A (en) | 2007-06-15 | 2007-06-15 | Mobile electronic device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007100286475A CN101325755A (en) | 2007-06-15 | 2007-06-15 | Mobile electronic device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101325755A true CN101325755A (en) | 2008-12-17 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007100286475A Pending CN101325755A (en) | 2007-06-15 | 2007-06-15 | Mobile electronic device |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103294884A (en) * | 2012-03-02 | 2013-09-11 | 瑞昱半导体股份有限公司 | Multimedia interactive system for avoiding unexpected behavior and related device and method |
| CN104660294A (en) * | 2013-11-22 | 2015-05-27 | 林胜军 | Separable mobile communication device and method |
| CN105426031A (en) * | 2014-09-23 | 2016-03-23 | 纬创资通股份有限公司 | Touch sensing device, touch system and touch detection method |
| CN106708199A (en) * | 2017-02-19 | 2017-05-24 | 景英伟 | Military portable computer |
| CN106980341A (en) * | 2017-03-05 | 2017-07-25 | 景英伟 | Universal tactical computer supported platform |
| US10444351B2 (en) | 2015-09-25 | 2019-10-15 | National Tsing Hua University | Electronic device and method for operation thereof |
-
2007
- 2007-06-15 CN CNA2007100286475A patent/CN101325755A/en active Pending
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103294884A (en) * | 2012-03-02 | 2013-09-11 | 瑞昱半导体股份有限公司 | Multimedia interactive system for avoiding unexpected behavior and related device and method |
| CN103294884B (en) * | 2012-03-02 | 2016-06-29 | 瑞昱半导体股份有限公司 | Multimedia interactive system for avoiding unexpected behavior and related device and method |
| CN104660294A (en) * | 2013-11-22 | 2015-05-27 | 林胜军 | Separable mobile communication device and method |
| CN105426031A (en) * | 2014-09-23 | 2016-03-23 | 纬创资通股份有限公司 | Touch sensing device, touch system and touch detection method |
| CN105426031B (en) * | 2014-09-23 | 2018-05-15 | 纬创资通股份有限公司 | Touch sensing device, touch system and touch detection method |
| US10444351B2 (en) | 2015-09-25 | 2019-10-15 | National Tsing Hua University | Electronic device and method for operation thereof |
| CN106708199A (en) * | 2017-02-19 | 2017-05-24 | 景英伟 | Military portable computer |
| CN106980341A (en) * | 2017-03-05 | 2017-07-25 | 景英伟 | Universal tactical computer supported platform |
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Open date: 20081217 |