CN201732549U - Electrophoresis display device - Google Patents
Electrophoresis display device Download PDFInfo
- Publication number
- CN201732549U CN201732549U CN201020203087XU CN201020203087U CN201732549U CN 201732549 U CN201732549 U CN 201732549U CN 201020203087X U CN201020203087X U CN 201020203087XU CN 201020203087 U CN201020203087 U CN 201020203087U CN 201732549 U CN201732549 U CN 201732549U
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- image
- control module
- electrophoretic display
- memory access
- data transmission
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Abstract
The utility model discloses an electrophoresis display device comprising a microprocessor, a memory, a direct memory access data transmission unit, an image display control module and an electrophoresis display, wherein the microprocessor is used for sending out image display commands to the image display control module; the memory is used for storing image data; the direct memory access data transmission unit is used for controlling the image data of the memory to be transmitted to the image display control module; the image display control module is used for obtaining and storing the image data and controlling the electrophoresis display to display images according to the image display command; and the electrophoresis display is used for image display. The electrophoresis display device comprises the direct internal memory access transmission unit, during image data transmission, the device can occupy less microprocessor resource and improve work efficiency by adopting the direct memory access transmission method.
Description
Technical field
The utility model relates to display technique, particularly a kind of electrophoretic display apparatus.
Background technology
Electrophoretic display technology relies on the electron ion be immersed in the liquid to move pixel to be brightened or deepening, is one of the most potential flexible electronic display technique at present.Application number is that 200910128148.2 Chinese patent application just discloses a kind of electrophoretic display technology.
Along with the development of electrophoretic display technology, electrophoretic display apparatus is widely used in the products such as flexible electronic reader, electronic paper and digital signature.
With reference to figure 1, show the synoptic diagram of prior art electrophoretic display apparatus, comprise: microprocessor 101, image display control module 103, electrophoretic display device (EPD) 104 and first interface 102, wherein, microprocessor 101 is used for storing image data, to image slices display control module 103 transmit image data, send the image idsplay order; First interface 102, as the passage that carries out image data transmission and instruction transmission between microprocessor 101 and the image display control module 103, described image display control module 103 is according to the image idsplay order, and control electrophoretic display device (EPD) 104 carries out image and shows.
At present, described image display control module 103 is provided by suppliers such as EPSON, 8trank and Appollo.During the image display control module 103 stating supplier in the use and provided, adopt first interface 102 of general-purpose interface (GPIO, General Purpose I/O) conduct.Yet general-purpose interface is not supported the data transfer mode of direct memory access (DMA, Direct Memory Access).In the prior art, carry out image data transmission by microprocessor 101 to image display control module 103, therefore, the image display process of electrophoretic display apparatus takies more microprocessor 101 resources.
The designer considers to design a kind of novel electrophoretic display apparatus, makes image display process take less microprocessor resources, thereby has higher work efficiency.
The utility model content
The utility model provides a kind of electrophoretic display apparatus, to solve the problem that image display process takies more microprocessor resources.In order to address the above problem, the utility model provides a kind of electrophoretic display apparatus, comprise: microprocessor, internal memory, direct memory access data transmission unit, image display control module and electrophoretic display device (EPD), wherein, microprocessor is used for sending the image idsplay order to the image display control module; Internal memory is used for the store images data; The direct memory access data transmission unit is used to control the image data transmission of internal memory to the image display control module; The image display control module is used for storing image data, carries out the image demonstration according to described image idsplay order control electrophoretic display device (EPD); Electrophoretic display device (EPD) is used to carry out image and shows.
Optionally, described direct memory access data transmission unit comprises the direct memory access controller and second interface, wherein, the direct memory access controller, be used for controlling second interface with the image data transmission of internal memory to the image display control module; Second interface is used for image data transmission with internal memory to the image display control module.
Optionally, described second interface is the variable latency time interface.
Optionally, described second interface is the magnetic disk memory interface.
Optionally, the image display control module is a field programmable gate array.
Optionally, the image display control module is a CPLD.
Optionally, save as Erasable Programmable Read Only Memory EPROM in described.
Optionally, save as flash memory in described.
Compared with prior art, the utility model electrophoretic display apparatus comprises the direct memory access transmission unit, described direct memory access transmission unit can be when carrying out image data transmission, realize the direct memory access transmission mode, the direct memory access transmission mode takies less microprocessor resources.
Description of drawings
Fig. 1 is the synoptic diagram of prior art electrophoretic display apparatus;
Fig. 2 is the synoptic diagram of the utility model electrophoretic display apparatus one embodiment;
Fig. 3 is the synoptic diagram of direct memory access data transmission unit one embodiment shown in Figure 2;
Fig. 4 is the synoptic diagram of the utility model electrophoretic display apparatus one embodiment.
Embodiment
For above-mentioned purpose of the present utility model, feature and advantage can be become apparent more, embodiment of the present utility model is described in detail below in conjunction with accompanying drawing.
As described in the background art, existing electrophoretic display apparatus is not supported the transmission mode of direct memory access, therefore image data transmission is finished by microprocessor, taken more microprocessor resources, especially for the bigger situation of view data, image data transmission causes the electrophoretic display apparatus inefficiency to taking of microprocessor resources.
At the problems referred to above, the utility model provides a kind of electrophoretic display apparatus.With reference to figure 2, show the synoptic diagram of the utility model electrophoretic display apparatus one embodiment.Described electrophoretic display apparatus comprises: microprocessor 200, internal memory 600, direct memory access (DMA, Direct Memory Access) data transmission unit 300, image display control module 400 and electrophoretic display device (EPD) 500, wherein:
Direct memory access data transmission unit 300 is used to realize that is to say the transmission mode of direct memory access, and under described direct memory access data transmission unit 300 controls, the image data transmission of internal memory 600 is to image display control module 400;
Image display control module 400, be used for by direct memory access data transmission unit 300, obtain view data and store described view data from internal memory 600, the image idsplay order of response microprocessor 200, control electrophoretic display device (EPD) 500 carry out image and show;
Described electrophoretic display device (EPD) 500 is used for carrying out image and shows under the control of image display control module 400.
The utility model electrophoretic display apparatus comprises direct memory access data transmission unit 300, in image display process, by described direct memory access data transmission unit 300, image data transmission in the internal memory 600 is to image display control module 400, less microprocessor 200 resources have been taken, in the image data transmission process, microprocessor 200 can respond other programs, has improved work efficiency.
With reference to figure 3, show the synoptic diagram of direct memory access data transmission unit 300 shown in Figure 2.Described direct memory access data transmission unit 300 comprises: the direct memory access controller 302 and second interface 303.Wherein:
Direct memory access controller 302 is used for obtaining from microprocessor 200 control of image transmission courses, control second interface 303 with the image data transmission in the internal memory 600 to image display control module 400, and finish the process of direct memory access transmission.
Below in conjunction with specific embodiment, the utility model is described in detail.
With reference to figure 4, show the synoptic diagram of the utility model electrophoretic display apparatus one embodiment.Wherein:
In save as Erasable Programmable Read Only Memory EPROM 601 (EEPROM, Erasable ProgrammableRead Only Memory), can write in the described Erasable Programmable Read Only Memory EPROM 601 and storing image data.
Second interface is variable latency time interface 304 (VLIO, Variable Latency Input/Output), and described variable latency time interface 304 can respond the transmission mode of direct memory access;
Described variable latency time interface 304 and direct memory access controller 301 all are integrated in the microprocessor 201;
The image display control module is the field programmable gate array 401 (FPGA, FieldProgrammable Gate Array) through the programming customization.
In the image data transmission process of present embodiment electrophoretic display apparatus, direct memory access controller 301 sends the request of direct memory access to microprocessor 201; The request of microprocessor 201 response direct memory access controllers 301 discharges control, and microprocessor 201 is sent to direct memory access controller 301 with the address of Erasable Programmable Read Only Memory EPROM 601 and the byte number that will transmit; Direct memory access controller 301 obtains control, send the address of Erasable Programmable Read Only Memory EPROM 601 to variable latency time interface 304, under the control of direct memory access controller 301, variable latency time interface 304 with the image data transmission in the Erasable Programmable Read Only Memory EPROM 601 to field programmable gate array 401; When variable latency time interface 304 had transmitted all bytes, direct memory access controller 301 sent the notice of interrupting direct memory access to microprocessor 201.
In the present embodiment, under the control of direct memory access controller 301, variable latency time interface 304 can be with the image data transmission of Erasable Programmable Read Only Memory EPROM 601 to field programmable gate array 401.Described image data transmission process has reduced the resource occupation to microprocessor 201, and microprocessor 201 can move other programs simultaneously in the image transmission course, improved work efficiency greatly.
Need to prove that in the above-described embodiments, directly the access controller and second sets of interfaces are formed in the microprocessor, but the utility model is not limited to this.
In addition, in the above-described embodiments, second interface is the variable latency time interface, and the utility model is not limited to this, and described second interface can also be other interfaces of supporting the direct memory access transmission mode, for example: magnetic disk memory interface etc.
In the above-described embodiments, thereby by field programmable gate array being programmed, is customized the function that realizes the image display control module, can also be by other programming devices be carried out programmed process, as the image display control module, CPLD (CPLD, Complex Programmable Logic Device) etc. for example.
Need to prove that also internal memory can also use the internal memory of other types except selecting Erasable Programmable Read Only Memory EPROM for use, for example flash memory etc.
Those skilled in the art can make amendment, be out of shape and replace according to the foregoing description.
To sum up, electrophoretic display apparatus of the present utility model comprises the direct memory access data transmission unit, when carrying out image data transmission, adopts the direct memory access transmission mode, can take less microprocessor resources, has improved work efficiency.
Though the utility model discloses as above with preferred embodiment, the utility model is not to be defined in this.Any those skilled in the art in not breaking away from spirit and scope of the present utility model, all can do various changes and modification, and therefore protection domain of the present utility model should be with claim institute restricted portion.
Claims (8)
1. an electrophoretic display apparatus is characterized in that, comprising: microprocessor, internal memory, direct memory access data transmission unit, image display control module and electrophoretic display device (EPD), wherein,
Microprocessor is used for sending the image idsplay order to the image display control module;
Internal memory is used for the store images data;
The direct memory access data transmission unit is used to control the image data transmission of internal memory to the image display control module;
The image display control module is used to obtain and stores described view data, carries out image according to described image idsplay order control electrophoretic display device (EPD) and show;
Electrophoretic display device (EPD) is used to carry out image and shows.
2. electrophoretic display apparatus as claimed in claim 1 is characterized in that, described direct memory access data transmission unit comprises the direct memory access controller and second interface, wherein,
The direct memory access controller, be used for controlling second interface with the image data transmission of internal memory to the image display control module;
Second interface is used for image data transmission with internal memory to the image display control module.
3. electrophoretic display apparatus as claimed in claim 2 is characterized in that, described second interface is the variable latency time interface.
4. electrophoretic display apparatus as claimed in claim 2 is characterized in that, described second interface is the magnetic disk memory interface.
5. electrophoretic display apparatus as claimed in claim 1 is characterized in that, the image display control module is a field programmable gate array.
6. electrophoretic display apparatus as claimed in claim 1 is characterized in that, the image display control module is a CPLD.
7. electrophoretic display apparatus as claimed in claim 1 is characterized in that, saves as Erasable Programmable Read Only Memory EPROM in described.
8. electrophoretic display apparatus as claimed in claim 1 is characterized in that, saves as flash memory in described.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020203087XU CN201732549U (en) | 2010-05-19 | 2010-05-19 | Electrophoresis display device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201020203087XU CN201732549U (en) | 2010-05-19 | 2010-05-19 | Electrophoresis display device |
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| Publication Number | Publication Date |
|---|---|
| CN201732549U true CN201732549U (en) | 2011-02-02 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201020203087XU Expired - Fee Related CN201732549U (en) | 2010-05-19 | 2010-05-19 | Electrophoresis display device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280087A (en) * | 2011-06-15 | 2011-12-14 | 中颖电子股份有限公司 | Singlechip microcomputer for electronic paper display |
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2010
- 2010-05-19 CN CN201020203087XU patent/CN201732549U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102280087A (en) * | 2011-06-15 | 2011-12-14 | 中颖电子股份有限公司 | Singlechip microcomputer for electronic paper display |
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| Date | Code | Title | Description |
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| 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: 20110202 Termination date: 20150519 |
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| EXPY | Termination of patent right or utility model |