CN203288224U - Liquid crystal screen display system having multiple communication interfaces - Google Patents
Liquid crystal screen display system having multiple communication interfaces Download PDFInfo
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- CN203288224U CN203288224U CN2013203072996U CN201320307299U CN203288224U CN 203288224 U CN203288224 U CN 203288224U CN 2013203072996 U CN2013203072996 U CN 2013203072996U CN 201320307299 U CN201320307299 U CN 201320307299U CN 203288224 U CN203288224 U CN 203288224U
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Abstract
The utility model discloses a liquid crystal screen display system having multiple communication interfaces. The system comprises a host computer for man-machine interaction, data processing and instruction transmitting, a driving module for instruction decoding and TFT-LCD liquid crystal screen display controlling, and a TFT-LCD liquid crystal screen for displaying, wherein the host computer is connected with the driving module through the multiple communication interfaces, and the driving module is connected with the TFT-LCD liquid crystal screen. The liquid crystal screen display system having the multiple communication interfaces has the following advantages: the respective advantages of a MCU and a CPLD/FPGA are combined together so that liquid crystal screens with different dimension can be controlled; the design of the multiple communication interfaces makes the provided system suitable for a plurality of occasions; and the cost is low and the upgrading is easier.
Description
Technical field
The utility model relates to field of liquid crystal display, is specifically related to a kind of liquid crystal display display system with multiple communication interface.
Background technology
Towards the liquid crystal display display system of commercial Application, major part only has the single-pass communication interface at present, and as USB, serial ports etc., along with the expansion of application, single communication interface can not meet actual demand.The liquid crystal display display system of employing CPLD/FPGA is subject to characteristics and the cost restriction of logical device itself, is difficult to meet the demand of multiple communication interface.Traditional employing carries the system of lcd controller MCU,, because the liquid crystal display resolution that the lcd controller of MCU is supported is limited, can not meet the driving demand of high-resolution liquid crystal screen.In addition, the existing system function ratio is more single, and flexibility ratio is poor, and upgradability is poor, such as the NandFLASH reading speed is slow, brush screen phenomenon is arranged while causing switching picture.
The utility model content
Shortcoming and deficiency that the utility model exists in order to overcome prior art, provide a kind of liquid crystal display display system with multiple communication interface.
The utility model adopts following technical scheme:
A kind of liquid crystal display display system with multiple communication interface, comprise,
Be used for the host computer that man-machine interaction, data processing and instruction send;
Be used for instruction decoding and control the driver module that the TFT-LCD liquid crystal display shows;
Be used for the TFT-LCD liquid crystal display that shows;
Described host computer is connected with driver module by multiple communication interface, and described driver module is connected with the TFT-LCD liquid crystal display.
Described driver module comprises SD card storage unit, touch screen control circuit, RTC clock circuit, NandFLASH storage unit, MCU unit, CPLD/FPGA unit, SDRAM video memory unit, TFT-LCD LCD Interface and hummer,
Described NandFLASH storage unit is connected with MCU unit and CPLD/FPGA unit respectively, and described RTC clock circuit, touch screen control circuit, hummer are connected with the MCU unit respectively,
Adopt Parallel Interface Communication between described MCU unit and CPLD/FPGA unit,
Described SDRAM video memory unit is connected with the CPLD/FPGA unit, described MCU unit read-write SD card storage unit, and described CPLD/FPGA is connected with the TFT-LCD LCD Interface.
Described RTC clock circuit comprises 3V button cell and crystal oscillating circuit.
Described host computer is a kind of in PC, DSP, PLC, CPLD/FPGA, ARM or single-chip microcomputer.
The built-in CAN of described multiple communication interface, Zigbee, bluetooth, Wifi, GSM, Ethernet, power carrier, RS232 and RS485.
Described TFT-LCD liquid crystal display also comprises touch-screen, and described touch-screen sticks on the TFT-liquid crystal display.
The beneficial effects of the utility model:
The present invention combines MCU and CPLD/FPGA advantage separately, can realize the different size liquid crystal display, particularly the control of high-resolution liquid crystal screen; The multiple communication interface design makes it be adapted to multiple occasion; Have multiple functionally, use flexibly, with low cost, the advantage that is easy to upgrade.
Description of drawings
Fig. 1 is a kind of structural drawing with liquid crystal display display system of multiple communication interface of the present invention,
Fig. 2 is the structural drawing of the driver module in Fig. 1.
Embodiment
, below in conjunction with embodiment and accompanying drawing, the utility model is described in further detail, but embodiment of the present utility model is not limited to this.
Embodiment
As shown in Figure 1, a kind of liquid crystal display display system with multiple communication interface, comprise,
Be used for the host computer that man-machine interaction, data processing and instruction send;
Be used for instruction decoding and control the driver module that the TFT-LCD liquid crystal display shows;
Be used for the TFT-LCD liquid crystal display that shows;
Described host computer is connected with driver module by multiple communication interface, and described driver module is connected with the TFT-LCD liquid crystal display.
Described host computer is any in PC, DSP, PLC, CPLD/FPGA, ARM or single-chip microcomputer, described host computer has man-machine interaction, data are processed and the instruction sending function, the user arranges the parameters of TFT-LCD liquid crystal display display system by host computer, host computer is sent to instruction and data in driver module by multiple communication interface, control the duty of driver module, driver module is controlled the TFT-LCD liquid crystal display after to instruction decoding and is shown.
As shown in Figure 2, described driver module comprises SD card storage unit, touch screen control circuit, RTC clock circuit, NandFLASH storage unit, MCU unit, CPLD/FPGA unit, SDRAM video memory unit, TFT-LCD LCD Interface and hummer; Described NandFLASH storage unit is connected with MCU unit and CPLD/FPGA unit, and described RTC clock circuit, touch screen control circuit, hummer are connected with the MCU unit respectively.
Described multiple communication interface, it is the communication interface of host computer and driver module, comprise CAN, Zigbee, bluetooth, Wifi, GSM, Ethernet, power carrier, RS232 and RS485, these communication interface hardware circuit realize, and configuring according to actual needs corresponding software can use.
Described SD card storage unit, the MCU unit adopts the standard read-write SD card of SDIO pattern by file system, SD card cell stores user's configuration file and image data, have the characteristics easily that write, it is mainly used in store configuration files and image data when system is used for the first time, and the MCU unit writes it in NandFLASH unit.
Described touch screen control circuit, touch-screen stick on above the TFT-LCD display screen, and described touch-screen has human-computer interaction function, with the TFT-LCD display screen, become one, and can select according to actual needs to install.The touch-screen output interface is connected with the SPI sampling interface chip output pin of MCU, and MCU adopts SPI mode activated AD chip.
Described RTC clock circuit, comprise 3V button cell and crystal oscillating circuit; The 3V button cell is connected with the RTC energization pins of MCU; Crystal oscillating circuit is connected with the RTC clock input pin of MCU, and the RTC real-time clock provides the precise time reference for the application scenario of recording if having time demand.
Described NandFLASH storage unit, it is the storer that liquid crystal display shows data and configuration parameter, have the advantages that power down is not lost, this unit is connected with the NandFLASH control interface of MCU unit, also with the NandFLASH control interface of CPLD/FPGA unit, is connected simultaneously.Thereby MCU unit and CPLD/FPGA unit all can be controlled NandFLASH, can select according to liquid crystal display resolution and performance requirement.Configuration data and the image data of NandFLASH storage can obtain from host computer, also can obtain from SD card storage unit.The MCU unit NandFLASH storage unit read-write operation and management are comprised read and write data, bad block management and ECC verification.
Adopt Parallel Interface Communication between described MCU unit and CPLD/FPGA unit, the MCU unit is to the move instruction of CPLD/FPGA unit and data; The instruction of CPLD/FPGA unit decodes is controlled the TFT-LCD liquid crystal display and is shown; CPLD/FPGA crosses over different clock-domains by asynchronous FIFO in unit.
Described SDRAM video memory unit is TFT-LCD liquid crystal display display buffer district; SDRAM video memory unit is connected with the SDRAM control interface of CPLD/FPGA unit, the CPLD/FPGA unit obtains showing data from the MCU unit after, through FIFO, crosses over different clock-domains, stores the data in SDRAM.
Described TFT-LCD liquid crystal display is controlled by driver module, and the CPLD/FPGA unit provides capable signal, field signal, data useful signal and shows data for the TFT-LCD liquid crystal display by the parallel port mode; Type of drive can be configured to DE pattern or HV pattern; Display mode can be configured to RGB565 or RGB888.
The specific works flow process is as follows:
Step 1, host computer sends to driver module by multiple communication interface with steering order and data.
Step 2, the MCU unit of driver module is according to the instruction of command protocols decoding host computer, according to the data of decoded result processing from host computer, and correspondingly complete operation to SD card storage unit, NandFLASH storage unit and RTC clock circuit real-time clock etc., simultaneously, the MCU unit also can respond the touching operation of user on touch-screen.
Step 3, MCU unit after processing command and data, send to the CPLD/FPGA unit with the steering order and the data that generate by communication interface.
Step 4, after the controlled instruction and data in CPLD/FPGA unit, first with data buffer storage in FIFO, under the control of inner moderator, at the liquid crystal display blanking zone, data are write corresponding SDRAM address location, show in liquid crystal display viewing area drive TFT-LCD.
Above-described embodiment is the better embodiment of the utility model; but embodiment of the present utility model is not limited by the examples; other any do not deviate from change, the modification done under Spirit Essence of the present utility model and principle, substitutes, combination, simplify; all should be the substitute mode of equivalence, within being included in protection domain of the present utility model.
Claims (6)
1. the liquid crystal display display system with multiple communication interface, is characterized in that, comprise,
Be used for the host computer that man-machine interaction, data processing and instruction send;
Be used for the TFT-LCD liquid crystal display that shows;
Be used for instruction decoding and control the driver module that the TFT-LCD liquid crystal display shows;
Described host computer is connected with driver module by multiple communication interface, and described driver module is connected with the TFT-LCD liquid crystal display.
2. a kind of liquid crystal display display system with multiple communication interface according to claim 1, it is characterized in that, described driver module comprises SD card storage unit, touch screen control circuit, RTC clock circuit, NandFLASH storage unit, MCU unit, CPLD/FPGA unit, SDRAM video memory unit, TFT-LCD LCD Interface and hummer;
Described NandFLASH storage unit is connected with MCU unit and CPLD/FPGA unit respectively, and described RTC clock circuit, touch screen control circuit, hummer are connected with the MCU unit respectively,
Adopt Parallel Interface Communication between described MCU unit and CPLD/FPGA unit,
Described SDRAM video memory unit is connected with the CPLD/FPGA unit, described MCU unit read-write SD card storage unit, and described CPLD/FPGA is connected with the TFT-LCD LCD Interface.
3. a kind of liquid crystal display display system with multiple communication interface according to claim 2, is characterized in that, described RTC clock circuit comprises 3V button cell and crystal oscillating circuit.
4. a kind of liquid crystal display display system with multiple communication interface according to claim 1, is characterized in that, described host computer is a kind of in PC, DSP, PLC, CPLD/FPGA, ARM or single-chip microcomputer.
5. a kind of liquid crystal display display system with multiple communication interface according to claim 1, is characterized in that the built-in CAN of described multiple communication interface, Zigbee, bluetooth, Wifi, GSM, Ethernet, power carrier, RS232 and RS485.
6. a kind of liquid crystal display display system with multiple communication interface according to claim 1, is characterized in that, described TFT-LCD liquid crystal display also comprises touch-screen, and described touch-screen sticks on the TFT-LCD liquid crystal display.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203072996U CN203288224U (en) | 2013-05-30 | 2013-05-30 | Liquid crystal screen display system having multiple communication interfaces |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2013203072996U CN203288224U (en) | 2013-05-30 | 2013-05-30 | Liquid crystal screen display system having multiple communication interfaces |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104822040A (en) * | 2015-04-28 | 2015-08-05 | 深圳市载德光电技术开发有限公司 | Multi-format video sequence generation system based on FPGA and method thereof |
| CN104913658A (en) * | 2015-06-05 | 2015-09-16 | 广东中鹏热能科技有限公司 | Production management system of ceramic tile kiln and control method of production management system |
| CN106527244A (en) * | 2015-09-11 | 2017-03-22 | 北京航天峰光电子技术有限责任公司 | Portable intelligent display terminal |
| CN106960653A (en) * | 2017-04-25 | 2017-07-18 | 武汉精测电子技术股份有限公司 | A kind of module color spot prosthetic device and method |
| CN107527598A (en) * | 2017-08-03 | 2017-12-29 | 北京斯通恩科技有限公司 | Intelligent liquid-crystal display screen system |
| CN108519832A (en) * | 2018-03-29 | 2018-09-11 | 上海电机学院 | Touch screen control system based on ARM and FPGA and control method |
-
2013
- 2013-05-30 CN CN2013203072996U patent/CN203288224U/en not_active Expired - Lifetime
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104822040A (en) * | 2015-04-28 | 2015-08-05 | 深圳市载德光电技术开发有限公司 | Multi-format video sequence generation system based on FPGA and method thereof |
| CN104822040B (en) * | 2015-04-28 | 2018-06-19 | 深圳市载德光电技术开发有限公司 | A kind of multiple format video sequence generation system and method based on FPGA |
| CN104913658A (en) * | 2015-06-05 | 2015-09-16 | 广东中鹏热能科技有限公司 | Production management system of ceramic tile kiln and control method of production management system |
| CN106527244A (en) * | 2015-09-11 | 2017-03-22 | 北京航天峰光电子技术有限责任公司 | Portable intelligent display terminal |
| CN106960653A (en) * | 2017-04-25 | 2017-07-18 | 武汉精测电子技术股份有限公司 | A kind of module color spot prosthetic device and method |
| CN107527598A (en) * | 2017-08-03 | 2017-12-29 | 北京斯通恩科技有限公司 | Intelligent liquid-crystal display screen system |
| CN108519832A (en) * | 2018-03-29 | 2018-09-11 | 上海电机学院 | Touch screen control system based on ARM and FPGA and control method |
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Granted publication date: 20131113 |
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| CX01 | Expiry of patent term |