CN102385842A - Intelligent color liquid crystal display - Google Patents
Intelligent color liquid crystal display Download PDFInfo
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- CN102385842A CN102385842A CN2010102693711A CN201010269371A CN102385842A CN 102385842 A CN102385842 A CN 102385842A CN 2010102693711 A CN2010102693711 A CN 2010102693711A CN 201010269371 A CN201010269371 A CN 201010269371A CN 102385842 A CN102385842 A CN 102385842A
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- liquid crystal
- vram
- crystal display
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Abstract
The invention relates to an industrial display, in particular to an intelligent color liquid crystal display, which comprises a color liquid crystal module. The color liquid crystal module is connected to a complex programmable logic device (CPLD) data conversion logic circuit which is connected to a central processing unit (CPU) which is respectively connected to a data storage and a program storage. The CPU is connected to a bus interface circuit and not required to be connected to other equipment, and the liquid crystal display can be normally used merely by connecting a communication circuit to the liquid crystal display.
Description
Technical field
The present invention relates to a kind of industrial display, relate in particular to a kind of intelligent colour liquid crystal display device.
Background technology
Along with the development of industrial automation, automation equipment is more and more universal, almost spreads all over all industrial circles.And colour liquid crystal display device is the visual plant of industrial automation equipment operational factor real time monitoring; The real-time parameter of form display devices such as its literal with image, indicating graphic, curve, numeral, form operation makes the device control personnel intuitive and convenient grasp the real-time equipment operation parameter of industry spot.
The display that is adopted at present comprises: CRT (kinescope), TN (black and white is brilliant with monochromatic night), STN (pseudo-color liquid crystal) are to have satisfied not the display requirement of state-of-the-art facility.And common TFT LCD does not have CPU, must connect PLC or other embedded systems in use and could normally show on-site parameters, and its complex structure use cost is bigger.
Summary of the invention
The object of the invention provides a kind of intelligent colour liquid crystal display device, and it does not need to connect separately other equipment, and only needing that communication line is connected into display can normally use.
For solving above-mentioned technical matters; The present invention includes: color liquid crystal module, color liquid crystal module connect CPLD data switching logic circuit, and described CPLD data switching logic circuit connects CPU; CPU connects data-carrier store and program storage respectively, CPU junctor highway interface circuit.
Described EBI is 20 pin twin-string sockets, and 20 pins comprise parallel port data line and serial port data line.
Said CPU connects USB interface.
Said data-carrier store is VRAM foreground storer and VRAM background memory.
The following display scheduling controlled step of described PLD data switching logic circuit operation:
(1) VRAM foreground memory stores present frame display page, VRAM background memory storage next frame display page;
(2) VRAM foreground memory stores and VRAM background memory swap data, VRAM background memory storage subsequent frame display page.
The present invention adopts CPU control CPLD data switching logic circuit, and making display only need that communication line is connected into display can normally use, and greatly reduces the cost of use, and the complicacy that has reduced system architecture.
Description of drawings
Fig. 1 is the system construction drawing of first kind of embodiment of the present invention.
Fig. 2 is the syndeton synoptic diagram of the EBI of first kind of embodiment of the present invention.
Embodiment
First kind of embodiment of the present invention as shown in Figure 1 comprises: the color liquid crystal module; The color liquid crystal module connects CPLD data switching logic circuit; Described CPLD data switching logic circuit connects CPU, and CPU connects data-carrier store and program storage respectively, CPU junctor highway interface circuit.
Bus interface circuit, by SIO serial communication MAX3232, PIO parallel communication HC74LV574 forms.CPLD data switching logic circuit is made up of a slice programmable logic device (CPLD) LC4128 or LC4256 and a slice RAM.Master cpu is ARM9S3C2440, and program storage adopts the FLASH storer, and data-carrier store adopts SDRAM.Power module is made up of diode, inductance, electric capacity, the resistance of a slice DC/DC chip LM2596 and prior art.Backlight driver module is made up of inverter and diode, inductance, electric capacity, the resistance of prior art.
EBI as shown in Figure 2 is 20 pin twin-string sockets, and 20 pins comprise parallel port data line and serial port data line.Pinout is as shown in the table.
Second kind of embodiment of the present invention comprises: the color liquid crystal module; The color liquid crystal module connects CPLD data switching logic circuit; Described CPLD data switching logic circuit connects CPU, and CPU connects data-carrier store and program storage respectively, CPU junctor highway interface circuit.CPU connects USB interface and is used to carry out the upgrading or the improvement of embedded system program.
Bus interface circuit, by SIO serial communication MAX3232, PIO parallel communication HC74LV574 forms.CPLD data switching logic circuit is made up of a slice programmable logic device (CPLD) LC4128 or LC4256 and a slice RAM.Master cpu is ARM9S3C2440, and program storage adopts the FLASH storer.Power module is made up of diode, inductance, electric capacity, the resistance of a slice DC/DC chip LM2596 and prior art.Backlight driver module is made up of inverter and diode, inductance, electric capacity, the resistance of prior art.Said data-carrier store is VRAM foreground storer and VRAM background memory, display is shown also simultaneously can write data, has realized that the high speed of picture is upgraded, and has not disturbed mutually.EBI as shown in Figure 2 is 20 pin twin-string sockets, and 20 pins comprise parallel port data line and serial port data line, and present embodiment directly adopts the parallel port to connect.The following display scheduling controlled step of described PLD data switching logic circuit operation:
(1) VRAM foreground memory stores present frame display page, VRAM background memory storage next frame display page;
(2) VRAM foreground memory stores and VRAM background memory swap data, VRAM background memory storage subsequent frame display page.
Claims (5)
1. intelligent colour liquid crystal display device; Comprise: the color liquid crystal module; The color liquid crystal module connects CPLD data switching logic circuit; It is characterized in that: described CPLD data switching logic circuit connects CPU, and CPU connects data-carrier store and program storage respectively, CPU junctor highway interface circuit.
2. intelligent colour liquid crystal display device according to claim 1 is characterized in that: described EBI is 20 pin twin-string sockets, and 20 pins comprise parallel port data line and serial port data line.
3. intelligent colour liquid crystal display device according to claim 1 and 2 is characterized in that: said CPU connects USB interface.
4. intelligent colour liquid crystal display device according to claim 1 and 2 is characterized in that: said data-carrier store is VRAM foreground storer and VRAM background memory.
5. intelligent colour liquid crystal display device according to claim 4 is characterized in that: the following display scheduling controlled step of described PLD data switching logic circuit operation:
(1) VRAM foreground memory stores present frame display page, VRAM background memory storage next frame display page;
(2) VRAM foreground memory stores and VRAM background memory swap data, VRAM background memory storage subsequent frame display page.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102693711A CN102385842A (en) | 2010-08-31 | 2010-08-31 | Intelligent color liquid crystal display |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102693711A CN102385842A (en) | 2010-08-31 | 2010-08-31 | Intelligent color liquid crystal display |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102385842A true CN102385842A (en) | 2012-03-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN2010102693711A Pending CN102385842A (en) | 2010-08-31 | 2010-08-31 | Intelligent color liquid crystal display |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111128085A (en) * | 2019-07-22 | 2020-05-08 | 深圳市中达优控科技有限公司 | Single-chip color display method and application |
Citations (4)
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| US20060227104A1 (en) * | 2005-04-12 | 2006-10-12 | Samsung Electronics Co., Ltd. | Rotation display apparatus using two display buffers in mobile phone and method thereof |
| CN201181553Y (en) * | 2008-04-15 | 2009-01-14 | 中国船舶重工集团公司第七○九研究所 | Reinforcement type big screen intelligent LCD display terminal |
| CN101409060A (en) * | 2005-09-28 | 2009-04-15 | 东芝松下显示技术有限公司 | Liquid crystal display device |
| CN201812477U (en) * | 2010-08-31 | 2011-04-27 | 河南友利华系统工程有限公司 | Intelligent colored liquid crystal display |
-
2010
- 2010-08-31 CN CN2010102693711A patent/CN102385842A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060227104A1 (en) * | 2005-04-12 | 2006-10-12 | Samsung Electronics Co., Ltd. | Rotation display apparatus using two display buffers in mobile phone and method thereof |
| CN101409060A (en) * | 2005-09-28 | 2009-04-15 | 东芝松下显示技术有限公司 | Liquid crystal display device |
| CN201181553Y (en) * | 2008-04-15 | 2009-01-14 | 中国船舶重工集团公司第七○九研究所 | Reinforcement type big screen intelligent LCD display terminal |
| CN201812477U (en) * | 2010-08-31 | 2011-04-27 | 河南友利华系统工程有限公司 | Intelligent colored liquid crystal display |
Non-Patent Citations (3)
| Title |
|---|
| 友利华（河南）高科技开发有限公司: "《彩色液晶VRAM型显示器YDV-603B使用说明书》", 30 November 2004, article "彩色液晶VRAM型显示器YDV-603B使用说明书", pages: 1 * |
| 李敏等: "彩色液晶显示器在嵌入式系统中的应用", 《单片机与嵌入式系统应用》, 29 February 2004 (2004-02-29), pages 49 - 52 * |
| 河南友利华系统工程有限公司: "《YD-611RARM 彩色液晶智能显示器使用说明书》", 31 August 2005, article "YD-611RARM 彩色液晶智能显示器使用说明书", pages: 5-7 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111128085A (en) * | 2019-07-22 | 2020-05-08 | 深圳市中达优控科技有限公司 | Single-chip color display method and application |
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Application publication date: 20120321 |