CN108932877A - Multimedia pushes and pulls blackboard - Google Patents
Multimedia pushes and pulls blackboard Download PDFInfo
- Publication number
- CN108932877A CN108932877A CN201710364077.0A CN201710364077A CN108932877A CN 108932877 A CN108932877 A CN 108932877A CN 201710364077 A CN201710364077 A CN 201710364077A CN 108932877 A CN108932877 A CN 108932877A
- Authority
- CN
- China
- Prior art keywords
- electronic whiteboard
- unit
- predeterminable area
- multimedia
- pushes
- 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.)
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Classifications
-
- 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
- G09B5/00—Electrically-operated educational appliances
- G09B5/02—Electrically-operated educational appliances with visual presentation of the material to be studied, e.g. using film strip
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B43—WRITING OR DRAWING IMPLEMENTS; BUREAU ACCESSORIES
- B43L—ARTICLES FOR WRITING OR DRAWING UPON; WRITING OR DRAWING AIDS; ACCESSORIES FOR WRITING OR DRAWING
- B43L1/00—Repeatedly-usable boards or tablets for writing or drawing
- B43L1/04—Blackboards
Landscapes
- Engineering & Computer Science (AREA)
- Business, Economics & Management (AREA)
- Physics & Mathematics (AREA)
- Educational Administration (AREA)
- Educational Technology (AREA)
- General Physics & Mathematics (AREA)
- Theoretical Computer Science (AREA)
- Drawing Aids And Blackboards (AREA)
Abstract
A kind of multimedia push-and-pull blackboard includes electronic whiteboard, clipboard and framework.Framework includes two first frames being oppositely arranged, clipboard and electronic whiteboard are between two first frames, electronic whiteboard be located at after clipboard and the display location of electronic whiteboard in electronic whiteboard close to the side of clipboard, clipboard be slidably disposed between two first frames and can plate block the predeterminable area of electronic whiteboard and keep the predeterminable area of electronic whiteboard exposed, electronic whiteboard further includes blocking sensing unit, display screen includes control unit, driving unit and back light unit, whether the predeterminable area for blocking sensing unit sensing electronic whiteboard, which is written plate, blocks, in electronic whiteboard, the in operating status and described predeterminable area is written when plate blocks and sends low level drive signal to driving unit control unit, driving unit provides low level to back light unit according to the low level drive signal.
Description
Technical field
The present invention relates to a kind of multimedia Duola blackboards.
Background technique
Currently, multimedia push-and-pull blackboard generally includes electronic whiteboard and clipboard.Electronic whiteboard is used to be demonstrated, and writes
Plate is used to be write.When using multimedia push-and-pull blackboard, it is sometimes desirable to electronic whiteboard is used, sometimes again using writing
Plate.In general, electronic whiteboard is still within open state, is easy that viewer is made to take sb's mind off sth when using clipboard.
Summary of the invention
In view of this, distractive it is necessary to provide a kind of display content for avoiding viewer from watching display screen can
The multimedia of energy pushes and pulls blackboard.
A kind of multimedia push-and-pull blackboard, including electronic whiteboard, clipboard and framework, framework include two first be oppositely arranged
Frame, clipboard and electronic whiteboard are between two first frames, and electronic whiteboard is located at after clipboard and the display of electronic whiteboard
Screen is located at electronic whiteboard close to the side of clipboard, clipboard be slidably disposed between two first frames and can plate to block electronics white
The predeterminable area of plate and keep the predeterminable area of electronic whiteboard exposed, electronic whiteboard further includes blocking sensing unit, display screen
Including control unit, driving unit and back light unit, whether the predeterminable area for blocking sensing unit sensing electronic whiteboard is written
Plate blocks, and in electronic whiteboard, the in operating status and described predeterminable area is written when plate blocks and sends low level control unit
Driving signal to driving unit, driving unit provides low level to back light unit according to the low level drive signal.
Further, electronic whiteboard further includes time quantum, and the time quantum calculating predeterminable area is written plate and blocks
Time, control unit the predeterminable area be written the time that plate blocks reach the first preset time when just send low level
Driving signal.
First preset time is 5 seconds.
Further, also in electronic whiteboard, the in operating status and described predeterminable area hides control unit from plate is written
High level driving signal is sent when the state of gear is to exposed state to driving unit, driving unit drives according to the high level to be believed
Number high level is provided to back light unit.
Further, electronic whiteboard further includes time calculating unit, and time calculating unit calculates the predeterminable area from quilt
The time of exposed state is in after the state blocked to exposed state, control unit is in operating status in electronic whiteboard and institute
It states predeterminable area and reaches the second preset time in time of exposed state after being written the state to exposed state that plate blocks
When just send high level driving signal to driving unit.
Further, second preset time can be 3 seconds.
Further, the sensing unit of blocking is infrared transmitting receiver.
Further, the predeterminable area is the central area of electronic whiteboard, and the sensing unit of blocking is fixed on electronics
On blank at the half of the side fixed with the first frame.
Further, the predeterminable area is the whole region of electronic whiteboard, is fixed on electronic whiteboard with the first frame
Sensing unit is blocked described in being respectively set one in the both ends of side.
Further, the electronic whiteboard is slidably disposed between two first frames.
Above-mentioned multimedia push-and-pull blackboard closes back light unit when the predeterminable area of electronic whiteboard is shielded, sees viewer
Less than the content on display screen, it is distractive so as to avoid the display content for watching display screen due to viewer can
Energy.
Detailed description of the invention
Fig. 1 is that a kind of multimedia pushes and pulls schematic diagram of the blackboard when electronic whiteboard is exposed.
Fig. 2 is that the multimedia in Fig. 1 pushes and pulls schematic diagram of the blackboard when electronic whiteboard is blocked.
Fig. 3 is that the multimedia in Fig. 1 pushes and pulls the module map of blackboard in one embodiment.
Fig. 4 is that the multimedia in Fig. 1 pushes and pulls the module map of blackboard in another embodiment.
Main element symbol description
| Multimedia pushes and pulls blackboard | 100 |
| Electronic whiteboard | 20 |
| Display screen | 22 |
| Clipboard | 40 |
| Framework | 50 |
| First frame | 52 |
| Second frame | 54 |
| Block sensing unit | 24 |
| Control unit | 26 |
| Driving unit | 28 |
| Back light unit | 30 |
| Time calculating unit | 32 |
The present invention that the following detailed description will be further explained with reference to the above drawings.
Specific embodiment
Please refer to Fig. 1 and Fig. 2, a kind of multimedia push-and-pull blackboard 100 includes electronic whiteboard 20, clipboard 40 and framework 50.
Framework 50 includes two first frames 52 being oppositely arranged and two second frames 54 for being connected to two first frames, 52 end.Clipboard
40 and electronic whiteboard 20 between two first frames 52 and after electronic whiteboard 20 is located at clipboard 40.The display of electronic whiteboard 20
Screen 22 is located at electronic whiteboard 20 close to the side of clipboard 40, and clipboard 40 is slidably disposed between two first frames 52 and can plate
It blocks the predeterminable area of electronic whiteboard 20 and keeps the predeterminable area of electronic whiteboard 20 exposed.Every one first frame 52 forms one
First sliding groove (not shown).Two opposite edges of clipboard 40 are slidably disposed in two first sliding grooves, to make clipboard 40 can
It is slided along the first frame 52.
In one embodiment, the electronic whiteboard 20 is fixed in the fixed area between two first frames 52, electricity
Sub- blank 20 cannot move between two first frames 52.The electronic whiteboard 20 is slidably disposed in two in another embodiment
Between first frame 52.Every one first frame 52 also forms a second sliding slot (not shown).Two opposite edges of electronic whiteboard 20
It is slidably disposed in two second sliding slots, to make electronic whiteboard 20 that can slide along the first frame 52.
Referring to Fig. 3, electronic whiteboard 20 further includes blocking sensing unit 24.Display screen 22 includes control unit 26, driving
Unit 28 and back light unit 30.Sensing unit 24 is blocked for sensing whether the predeterminable area of electronic whiteboard 20 is written the screening of plate 40
Gear.The sensing unit 24 of blocking can be optical sensor.Optical sensor includes optical transmitting set and optical receiver.Optical transmitting set transmitting
The light of fixed wave length.When the light that optical transmitting set issues is blocked and is reflected back, optical receiver receives reflection at the appointed time
Light when show there is shelter in one pre-determined distance of the front of electronic whiteboard 20, so that it is determined that electronic whiteboard 20 is blocked.Light-receiving
Device shows in one preset distance of the front of electronic whiteboard 20 when being not received by the light of reflection at the appointed time without shelter, from
And it determines electronic whiteboard 20 and is not blocked.The optical sensor can be infrared transmitting receiver.
In one embodiment, the predeterminable area is the central area of electronic whiteboard 20, described to block sensing unit 24
It is fixed at the half of side fixed with the first frame 52 on electronic whiteboard 20.In another embodiment, described pre-
If region is the whole region of electronic whiteboard 20, the both ends for the side fixed on electronic whiteboard 20 with the first frame 52 are respectively set
Sensing unit 24 is blocked described in one.
In electronic whiteboard 20, the in operating status and described predeterminable area is written hair when plate 40 blocks to control unit 26
Send low level drive signal to driving unit 28.Driving unit 28 provides low level to backlight according to the low level drive signal
Unit 30, so that back light unit 30 be made to close.Since back light unit 30 is closed, display screen 22 is rendered as black, and viewer sees not
Content onto display screen 22, to avoid when using clipboard 40 due to the display content dispersion viewer's of display screen 22
Attention.
Also in electronic whiteboard 20, the in operating status and described predeterminable area blocks control unit 26 from plate 40 is written
State to exposed state when send high level driving signal to driving unit 28.Driving unit 28 drives according to the high level
Signal provides high level enables viewer to see the content on display screen 22 to back light unit 30 to open back light unit 30.
Referring to Fig. 4, electronic whiteboard 20 further includes time calculating unit 32.Time calculating unit 32 is described pre- for calculating
If region is written the time that plate 40 blocks.Control unit 26 is written the time that plate 40 blocks in the predeterminable area and reaches
Low level drive signal is just sent when one preset time.First preset time can be 5 seconds.Time calculating unit 32 is also used to
Calculate the predeterminable area is in exposed state time after from the state being blocked to exposed state.Control unit 26 is in electronics
Blank 20 is in operating status and the predeterminable area after being written the state to exposed state that plate 40 blocks in exposed
High level driving signal is just sent when the time of state reaches the second preset time to driving unit 28.Second preset time
It can be 3 seconds.
Above-mentioned multimedia push-and-pull blackboard 100 closes back light unit 30 when the predeterminable area of electronic whiteboard 20 is shielded, makes
Viewer can't see the content on display screen 22, disperse so as to avoid the display content for watching display screen 22 due to viewer
The possibility of attention.
Those skilled in the art it should be appreciated that more than embodiment be intended merely to illustrate the present invention,
And be not used as limitation of the invention, as long as within spirit of the invention, it is to the above embodiments
It is appropriate change and variation all fall in it is disclosed in this invention within the scope of.
Claims (10)
1. a kind of multimedia pushes and pulls blackboard, including electronic whiteboard, clipboard and framework, framework include two first sides being oppositely arranged
Frame, clipboard and electronic whiteboard are between two first frames, it is characterised in that：Electronic whiteboard is located at after clipboard and electronics is white
In electronic whiteboard close to the side of clipboard, clipboard is slidably disposed between two first frames and can plate screening the display location of plate
It keeps off the predeterminable area of electronic whiteboard and keeps the predeterminable area of electronic whiteboard exposed, electronic whiteboard further includes blocking sensing list
Member, display screen include control unit, driving unit and back light unit, and the predeterminable area for blocking sensing unit sensing electronic whiteboard is
The no plate that is written blocks, and in electronic whiteboard, the in operating status and described predeterminable area is written hair when plate blocks to control unit
Send low level drive signal to driving unit, driving unit provides low level to backlight list according to the low level drive signal
Member.
2. multimedia as described in claim 1 pushes and pulls blackboard, which is characterized in that electronic whiteboard further includes time quantum, time
Unit calculates the predeterminable area and is written the time that plate blocks, and control unit is written when plate blocks in the predeterminable area
Between just send low level drive signal when reaching the first preset time.
3. multimedia as claimed in claim 2 pushes and pulls blackboard, which is characterized in that first preset time is 5 seconds.
4. multimedia as described in claim 1 pushes and pulls blackboard, which is characterized in that control unit is also in operation in electronic whiteboard
State and the predeterminable area are from sending high level driving signal to driving when being written state that plate blocks to exposed state
Unit, driving unit provide high level to back light unit according to the high level driving signal.
5. multimedia as claimed in claim 4 pushes and pulls blackboard, which is characterized in that electronic whiteboard further includes time calculating unit,
Time calculating unit calculates the predeterminable area is in exposed state time after from the state being blocked to exposed state, control
Unit in electronic whiteboard the in operating status and described predeterminable area after being written the state to exposed state that plate blocks
High level driving signal is just sent when the time of exposed state reaching the second preset time to driving unit.
6. multimedia as claimed in claim 5 pushes and pulls blackboard, which is characterized in that second preset time 3 seconds.
7. multimedia as described in claim 1 pushes and pulls blackboard, which is characterized in that the sensing unit of blocking is infrared ray transmitting
Receiver.
8. multimedia as described in claim 1 pushes and pulls blackboard, which is characterized in that the predeterminable area is the center of electronic whiteboard
Region, the sensing unit of blocking are fixed at the half of side fixed with the first frame on electronic whiteboard.
9. multimedia as described in claim 1 pushes and pulls blackboard, which is characterized in that the predeterminable area is the entire of electronic whiteboard
Region, on electronic whiteboard the both ends of the side fixed with the first frame be respectively set one described in block sensing unit.
10. multimedia as described in claim 1 pushes and pulls blackboard, which is characterized in that the electronic whiteboard is slidably disposed in two the
Between one frame.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710364077.0A CN108932877A (en) | 2017-05-22 | 2017-05-22 | Multimedia pushes and pulls blackboard |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710364077.0A CN108932877A (en) | 2017-05-22 | 2017-05-22 | Multimedia pushes and pulls blackboard |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108932877A true CN108932877A (en) | 2018-12-04 |
Family
ID=64449643
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710364077.0A Pending CN108932877A (en) | 2017-05-22 | 2017-05-22 | Multimedia pushes and pulls blackboard |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN108932877A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202337130U (en) * | 2011-11-04 | 2012-07-18 | 赵林福 | Intelligent lighting system for movable blackboard |
| CN202782341U (en) * | 2012-09-21 | 2013-03-13 | 鹤岗师范高等专科学校 | Blackboard device for teaching |
| CN203818839U (en) * | 2014-05-14 | 2014-09-10 | 杨毅 | Multimedia pull-push blackboard |
| CN205468100U (en) * | 2015-11-20 | 2016-08-17 | 欧浦登（顺昌）光学有限公司 | Sliding chalkboard |
| CN106297580A (en) * | 2016-09-18 | 2017-01-04 | 安徽嘉伟新材料科技有限责任公司 | A kind of transparent multimedia windowpane |
| CN106371548A (en) * | 2016-08-31 | 2017-02-01 | 深圳市创凯智能股份有限公司 | Display screen energy saving control method and device |
-
2017
- 2017-05-22 CN CN201710364077.0A patent/CN108932877A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202337130U (en) * | 2011-11-04 | 2012-07-18 | 赵林福 | Intelligent lighting system for movable blackboard |
| CN202782341U (en) * | 2012-09-21 | 2013-03-13 | 鹤岗师范高等专科学校 | Blackboard device for teaching |
| CN203818839U (en) * | 2014-05-14 | 2014-09-10 | 杨毅 | Multimedia pull-push blackboard |
| CN205468100U (en) * | 2015-11-20 | 2016-08-17 | 欧浦登（顺昌）光学有限公司 | Sliding chalkboard |
| CN106371548A (en) * | 2016-08-31 | 2017-02-01 | 深圳市创凯智能股份有限公司 | Display screen energy saving control method and device |
| CN106297580A (en) * | 2016-09-18 | 2017-01-04 | 安徽嘉伟新材料科技有限责任公司 | A kind of transparent multimedia windowpane |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20181204 |
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| WD01 | Invention patent application deemed withdrawn after publication |