CN100426855C - Display device - Google Patents
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- CN100426855C CN100426855C CNB2005101151527A CN200510115152A CN100426855C CN 100426855 C CN100426855 C CN 100426855C CN B2005101151527 A CNB2005101151527 A CN B2005101151527A CN 200510115152 A CN200510115152 A CN 200510115152A CN 100426855 C CN100426855 C CN 100426855C
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- bus
- display unit
- microcontroller
- unit according
- image processor
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Abstract
The invention relates to a display device, which comprises microcontroller, checking module, image processor, the first and the second buses, wherein the checking module checks the state of display device; the image processor treats the signal from microcontroller; the first bus connects the image processor and microcontroller; the second bus connects the microcontroller and checking module; the checking module via the second bus transmits the checked state to the microcontroller which via the first bus communicates with image processor; the microcontroller and second bus can share the consumptions of image processor and first bus.
Description
Technical field
The present invention relates to a kind of display unit, in more detail, relate to a kind of display unit, it reaches the purpose of sharing the image processor workload by microcontroller and two buses.
Background technology
Display unit on the market is except the image displaying quality that requires itself, and the stability of a system also is a very important ring, so display unit is for the information of system's surrounding enviroment, for example: the detection of information such as internal temperature, voltage status also need be paid attention to.With pre-projecting type projector (front projector) is example, except the projection image quality want good, can normally move for a long time also be an important consideration, particularly the light source of pre-projecting type projector use mostly is the high photothermal bulb of tool greatly, therefore heat dissipation problem is especially important, might lead to disaster if deal with improperly promptly.
Fig. 1 is the basic structure of the internal control interface of a known pre-projecting type projector, and this pre-projecting type projector comprises image decoder 1, projection module 2, image processor 3, bus 4 and environmental monitoring module 5.Image processor 3 is handled the data image signal of being exported from image decoder 1 by bus 4, sends projection module 2 to display frame by bus 4 again.Image processor 3 is got in touch by bus 4 and environmental monitoring module 5 simultaneously, so that environmental monitoring is carried out in pre-projecting type projector inside.This environmental monitoring can comprise temperature detection, rotation speed of the fan detection, voltage detecting etc., to guarantee the normally operation under the environment of safety of pre-projecting type projector.
Generally speaking, image processor 3 can be set up a plurality of stand-alone programs, synchronously carries out above-mentioned work, yet the data volume of the required processing of these programs is quite a lot of, and uses same bus 4 and other device to link up again.When workload was big, bus 4 can can't be transmitted signal in real time, and this will have influence on the quality of projection and environmental monitoring.What is more, may cause bus 4 paralysis, directly influences the stability of system.
In sum, there is the problem that remains to be improved in display unit now.In other words, how effectively sharing the workload of image processor and coffret thereof, and then guarantee the operation that system can be stable, is an important topic in fact.
Summary of the invention
The purpose of this invention is to provide a kind of display unit, comprise microcontroller, detection module, image processor, first bus and second bus, wherein detection module is in order to detect the Environmental security state of display unit, image processor is in order to handle the signal that microcontroller transmitted, first bus is in order to be electrically connected image processor and microcontroller, and second bus is in order to be electrically connected microcontroller and detection module.
Therefore the detected state of detection module of the present invention is sent to microcontroller by second bus, microcontroller is repaid its state information to image processor by first bus more in case of necessity, reduce the workload of the image processor and first bus thus, reach the purpose that increases the stability of a system.
Description of drawings
Fig. 1 is the schematic diagram of known pre-projecting type projector; And
Fig. 2 is the schematic diagram of the embodiment of the invention.
The main element description of symbols
1 image decoder, 2 projection modules
3 image processors, 4 buses
5 environmental monitoring modules, 201 detection modules
203 image processors, 205 microcontrollers
207 first buses, 209 second buses
211 image decoders, 213 projection modules
215 light sources, 217 fans
Embodiment
As shown in Figure 2, the preferred embodiment of display unit of the present invention is a kind of projector.This projector comprises detection module 201, image processor 203, microcontroller 205, first bus 207, second bus 209, image decoder 211 and projection module 213.Detection module 201 is in order to detect the state of this projector.The DDP2000 chip that image processor 203 is produced for Texas Instruments (Texas Instruments), it handles the data image signal of being exported from image decoder 211 by first bus 207, send projection module 213 to display frame by first bus 207 again, also handle the signal that microcontroller 205 is transmitted simultaneously.Microcontroller 205 is connected by second bus 209 with detection module 201, so detection module 201 detected states will utilize second bus 209 to send microcontroller 205 to.First bus 207 and second bus 209 are internal integrate circuit bus (I
2C bus).
Microcontroller 205 moves according to program, this program comprises main cyclic program and interrupt service routine, the program control microcontroller 205 of wherein main circulation is handled the signal that is transmitted by second bus 209, interrupt service routine requires the state of microcontroller 205 repaying systems according to image processor 203, control microcontroller 205 interrupts existing just carrying out of task, transmits the repayment signal by first bus 207 and gives image processor 203.
As shown in Figure 2, this projector also comprises light source 215.But the temperature of detection module 201 detection light source 215.Light source 215 sides can be provided with an overheat switch (not shown); when detection module 201 detects the temperature of light source 215 when too high; microcontroller 205 is given image processor 203 by 207 repayment of first bus; image processor 203 just cuts off this overheat switch, and is overheated to avoid projector.But detection module 201 is the luminosity of detection light source 215 also, is supplied to the voltage of light source 215 in order to suitable adjustment, to keep the brightness of light source 215.
As shown in Figure 2, this projector also comprises fan 217, and detection module 201 can detect the rotating speed of fan 217 or the voltage that detection is supplied to fan 217, with the rotating speed of adjustment fan 217, and then regulates projector's temperature inside.
In sum, detection module 201 detected states of the present invention are to be sent to microcontroller 205 by second bus 209, and image processing apparatus 203 is demonstrations of handling image by first bus 207, microcontroller 205 just can be given image processor 203 by 207 repayment of first bus with its state information in case of necessity, so the present invention has reduced the workload of the image processor 203 and first bus 207 widely, reach the purpose that increases the stability of a system.
Only the foregoing description only is illustrative principle of the present invention and effect thereof, but not is used to limit the present invention.Any person of ordinary skill in the field all can be under the situation of know-why of the present invention and spirit, and the foregoing description is made amendment and changed.Therefore the scope of the present invention should be listed as claim.
Claims (12)
1. display unit is characterized in that comprising:
Microcontroller;
Detection module is in order to detect the Environmental security state of this display unit;
Image processor is in order to handle the signal that this microcontroller transmits;
First bus is in order to be electrically connected this image processor and this microcontroller;
And
Second bus is in order to be electrically connected this microcontroller and this detection module.
2. display unit according to claim 1 is characterized in that this microcontroller comprises the UART interface, is connected to this second bus.
3. display unit according to claim 1 is characterized in that this microcontroller comprises the GPIO interface, is connected to this second bus.
4. display unit according to claim 1 is characterized in that this microcontroller moves according to program, and this program comprises:
Main cyclic program is in order to handle the signal that transmits by this second bus; And
Interrupt service routine is in order to handle the signal that transmits by this first bus.
5. display unit according to claim 1 is characterized in that this first bus and this second bus are respectively internal integrate circuit bus.
6. display unit according to claim 1 is characterized in that also comprising light source, wherein this Environmental security state temperature that is this light source.
7. display unit according to claim 1 is characterized in that also comprising light source, wherein this Environmental security state luminosity that is this light source.
8. display unit according to claim 1 is characterized in that also comprising fan, wherein this Environmental security state rotating speed that is this fan.
9. display unit according to claim 1 is characterized in that also comprising fan, and wherein this Environmental security state is the voltage that is supplied to this fan.
10. display unit according to claim 1 is characterized in that the ambient temperature of this Environmental security state for this display unit.
11. display unit according to claim 1 is characterized in that the ambient brightness of this Environmental security state for this display unit.
12. display unit according to claim 1 is characterized in that the ambient pressure of this Environmental security state for this display unit.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101151527A CN100426855C (en) | 2005-11-14 | 2005-11-14 | Display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2005101151527A CN100426855C (en) | 2005-11-14 | 2005-11-14 | Display device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1968382A CN1968382A (en) | 2007-05-23 |
| CN100426855C true CN100426855C (en) | 2008-10-15 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNB2005101151527A Expired - Fee Related CN100426855C (en) | 2005-11-14 | 2005-11-14 | Display device |
Country Status (1)
| Country | Link |
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| CN (1) | CN100426855C (en) |
Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1350264A (en) * | 2000-07-31 | 2002-05-22 | 精工爱普生株式会社 | Environment-adapting image display system and information storage medium |
| US20020083232A1 (en) * | 2000-07-25 | 2002-06-27 | Dute John C. | Apparatus, method and signal set for monoline serial interface |
| US20020118160A1 (en) * | 2001-02-27 | 2002-08-29 | Hisashi Nakamura | Liquid crystal projector |
| CN2543303Y (en) * | 2002-04-23 | 2003-04-02 | 神基科技股份有限公司 | Detecting device of image correction for projector equipment |
| JP2003295310A (en) * | 2002-04-01 | 2003-10-15 | Matsushita Electric Ind Co Ltd | Video projection device |
| CN1549046A (en) * | 2003-05-23 | 2004-11-24 | 明基电通股份有限公司 | Projector adapted to regulating image size and brightness accoding to environment size |
| JP2005227478A (en) * | 2004-02-12 | 2005-08-25 | Seiko Epson Corp | Image display device |
-
2005
- 2005-11-14 CN CNB2005101151527A patent/CN100426855C/en not_active Expired - Fee Related
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020083232A1 (en) * | 2000-07-25 | 2002-06-27 | Dute John C. | Apparatus, method and signal set for monoline serial interface |
| CN1350264A (en) * | 2000-07-31 | 2002-05-22 | 精工爱普生株式会社 | Environment-adapting image display system and information storage medium |
| US20020118160A1 (en) * | 2001-02-27 | 2002-08-29 | Hisashi Nakamura | Liquid crystal projector |
| JP2003295310A (en) * | 2002-04-01 | 2003-10-15 | Matsushita Electric Ind Co Ltd | Video projection device |
| CN2543303Y (en) * | 2002-04-23 | 2003-04-02 | 神基科技股份有限公司 | Detecting device of image correction for projector equipment |
| CN1549046A (en) * | 2003-05-23 | 2004-11-24 | 明基电通股份有限公司 | Projector adapted to regulating image size and brightness accoding to environment size |
| JP2005227478A (en) * | 2004-02-12 | 2005-08-25 | Seiko Epson Corp | Image display device |
Non-Patent Citations (2)
| Title |
|---|
| 基于80C552的液晶投影机监控装置的设计. 郑国恒，吴胜祥，黄新超.电子技术应用，第9期. 1998 |
| 基于80C552的液晶投影机监控装置的设计. 郑国恒，吴胜祥，黄新超.电子技术应用，第9期. 1998 * |
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| Publication number | Publication date |
|---|---|
| CN1968382A (en) | 2007-05-23 |
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