CN204596389U - The liquid crystal module testing device of USB virtual serial port and Ethernet interface - Google Patents
The liquid crystal module testing device of USB virtual serial port and Ethernet interface Download PDFInfo
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- CN204596389U CN204596389U CN201520123473.0U CN201520123473U CN204596389U CN 204596389 U CN204596389 U CN 204596389U CN 201520123473 U CN201520123473 U CN 201520123473U CN 204596389 U CN204596389 U CN 204596389U
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Abstract
The utility model relates to the liquid crystal module testing device of a kind of USB virtual serial port and Ethernet interface, it comprises host computer, usb interface module, central processing module, signal exports and processing module, load module, internal memory and power module, wherein, the test instruction communication ends of described host computer connects the test instruction communication ends of central processing module by usb interface module, the test signal communication ends connection signal output of described central processing module and the test signal communication ends of processing module, the control command input end of described central processing module connects load module, the storage data communication end of described central processing module connects internal memory, the power control signal output terminal of described central processing module connects the control end of power module, the output terminal of power module is used for powering to LCD module under test.The utility model well can adapt to the development of current computer Peripheral Interface, saves PG box cost, reduces the area of pcb board.
Description
Technical field
The utility model relates to liquid crystal module technical field of measurement and test, is specifically related to the liquid crystal module testing device of a kind of USB (Universal Serial Bus, USB (universal serial bus)) virtual serial port and Ethernet interface.
Background technology
Current liquid crystal module testing device is divided into (PC upper strata) host computer and (liquid crystal test module) PG box.Host computer carries out liquid crystal module editor configuration, and PG box is for exporting power supply and the signal of LCD module under test.Communication mode in the scheme of current market between host computer and PG box is Ethernet interface communication mode or serial communication mode.Common Ethernet interface often needs independent ethernet controller and is with peripheral interface (as phy and RJ45), adds system cost, and product size also can expand (PCB layout enlarged areas).In addition, serial ports also has same problem.Meanwhile, portable personal computer serial port is replaced by USB interface.So need the new mode of design to substitute too network interface communication mode or serial communication mode.
Utility model content
The purpose of this utility model is the liquid crystal module testing device providing a kind of USB virtual serial port and Ethernet interface, and this device passes through the mode of USB interface virtual serial port and Ethernet interface, effectively can reduce PG box Peripheral Interface.In addition, this device well can adapt to the development of current computer Peripheral Interface, saves PG box cost, reduces the area of pcb board (Printed Circuit Board, printed circuit board).
For achieving the above object, USB virtual serial port designed by the utility model and the liquid crystal module testing device of Ethernet interface, it is characterized in that: it comprises host computer, usb interface module, central processing module, signal exports and processing module, load module, internal memory and power module, wherein, the test instruction communication ends of described host computer connects the test instruction communication ends of central processing module by usb interface module, the test signal communication ends connection signal output of described central processing module and the test signal communication ends of processing module, the control command input end of described central processing module connects load module, the storage data communication end of described central processing module connects internal memory, the power control signal output terminal of described central processing module connects the control end of power module, the output terminal of power module is used for powering to LCD module under test.
The utility model the communication interface between host computer and PG box is unified into USB interface (when host computer and PG box adopt serial ports to communicate with Ethernet interface, only need by direct-connected for PC USB main interface to PG box USB from interface.Upper layer communication software interface and true serial ports and Ethernet interface completely the same), by the mode of USB interface virtual serial port and Ethernet interface, effectively reduce PG box Peripheral Interface.In addition, the utility model well can adapt to the development of current computer Peripheral Interface, saves PG box cost, reduces the area (USB interface does not need separate controller and peripheral hardware) of pcb board.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the utility model using state.
1-host computer, 2-usb interface module, 3-central processing module, 4-signal export and processing module, 5-load module, 6-internal memory, 7-power module, 8-LCD module under test.
Embodiment
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail:
The liquid crystal module testing device of designed USB virtual serial port of the present utility model and Ethernet interface, as shown in Figure 1, it comprises host computer 1, usb interface module 2, central processing module 3, signal exports and processing module 4, load module 5, internal memory 6 and power module 7, wherein, the test instruction communication ends of described host computer 1 connects the test instruction communication ends of central processing module 3 by usb interface module 2, the test signal communication ends connection signal output of described central processing module 3 and the test signal communication ends of processing module 4, the control command input end of described central processing module 3 connects load module 5, the storage data communication end of described central processing module 3 connects internal memory 6, the power control signal output terminal of described central processing module 3 connects the control end of power module 7, the output terminal of power module 7 is used for powering to LCD module under test 8.
In above-mentioned design proposal, usb interface module 2, central processing module 3, signal export and processing module 4, load module 5, internal memory 6 and power module 7 constitute liquid crystal test module (PG box).
In technique scheme, main control chip (single-chip microprocessor MCU) is had in power module 7, this main control chip exports (comprising electromotive voltage signal VDD, signal power source IO voltage VDDIO, backlight electric power voltage VBL, common port voltage VCOM, liquid crystal drive power supply positive voltage VSN etc.) by controlling multiple multiple power supplies with the communication of ARM nucleus module, when power supply must changes persuing more time, by change power module solve.
In above-mentioned design proposal, described central processing module 3 is ARM nucleus module.ARM nucleus module adopts ARM Cortex-A9 chip, mainly as operating system and application program operation platform.Hardware platform selects ARM Cortex-A9 framework, Freescale i.MX6 family chip.This chip top is integrated with usb2.0device interface, as usb interface module 2.
In above-mentioned design proposal, described load module 5 is man-machine device.
In above-mentioned design proposal, signal exports and processing module 4 is programmable logic array FPGA, integrated LVDS (Low Voltage Differential Signaling in FPGA, technology of Low Voltage Differential Signaling interface), MIPI (Mobile Industry Processor Interface, mobile Industry Processor Interface), DP (DisplayPort, high-definition digital display interface standard) signal output function.By the communication with ARM nucleus module, directly transfer signal source to LVDS, MIPI, DP signal exports.
Utilize above-mentioned liquid crystal module testing device to carry out a method for liquid crystal module test, it comprises the steps:
Step 1: after central processing module 3 starts, central processing module 3 is transferred as required and is loaded virtual serial port or the virtual network port driver (two kinds of communication modes can be selected to switch according to user voluntarily) of usb interface module 2 in internal memory 6;
Step 2: central processing module 3 loads after virtual serial port or virtual network port driver complete, the operating system (linux operating system) of central processing module 3 notifies that host computer 1 (windows operating system) carries out driver loading, host computer 1 is transferred and is loaded virtual serial port or the virtual network port driver of corresponding usb interface module 2 from the hardware driving equipment of inside, now can complete serial ports or network interface communication by usb interface module 2 between host computer 1 and central processing module 3;
Step 3: run the module operation software in host computer 1, carry out the configuration of liquid crystal module test parameter in module operation software;
Step 4: above-mentioned liquid crystal module test parameter configuration is well preserved afterwards, then enters the liquid crystal module test interface of host computer 1;
Step 5: host computer 1 issues various test communications instruction by usb interface module 2, central processing module 3, signal output and processing module 4 and power module 7 to LCD module under test 8, completes the test of liquid crystal module.
The concrete grammar of above-mentioned steps 5 comprises the steps:
Step 5.1: selected element screen in the liquid crystal module test interface of host computer 1, host computer 1 takes out power configuration parameter from above-mentioned liquid crystal module test parameter, and power configuration parameter is sent to central processing module 3, central processing module 3 is powered to LCD module under test 8 according to this power configuration state modulator power module 7;
Step 5.2: select to cut figure and show in the liquid crystal module test interface of host computer 1, host computer 1 takes out signal configures and test picture from above-mentioned liquid crystal module test parameter, and signal configures and test picture are sent to central processing module 3, test picture is converted to the signal that LCD module under test 8 can identify by central processing module 3, and to be exported by signal and processing module 4 exports to LCD module under test 8, now observe test picture and the voltage and current of LCD module under test 8 display, observing LCD module under test 8 has zero defect.
Step 5.3: select to cut figure adjustment or RGB color adaptation or GTG and regulate in the liquid crystal module test interface of host computer 1, host computer 1 takes out in this step and regulates corresponding configuration parameter from above-mentioned liquid crystal module test parameter, and the configuration parameter corresponding to above-mentioned adjustment to be exported by central processing module 3 and signal and processing module 4 is exported to LCD module under test 8 and carried out cutting figure and to regulate or RGB color adaptation or GTG regulate, observing LCD module under test 8 in adjustment process has zero defect.Middle as observed any defect, all can select shut-down operation.Now power output interface is stopped power supply, and signaling interface stops providing signal.
In technique scheme, what described usb interface module 2 adopted is that the CDC class standard of USB is to realize virtual serial port or virtual ethernet mouth.Ethernet Controlling model ECM (Ethernet Networking Control Model) in USB communication apparatus quasi-protocol CDC (Communication Devices Class Specification) and Ethernet realistic model EEM (Ethernet Emulation Model) can by its virtual be the Ethernet interface of a standard.
The content that this instructions is not described in detail belongs to the known prior art of professional and technical personnel in the field.
Claims (4)
1. the liquid crystal module testing device of a USB virtual serial port and Ethernet interface, it is characterized in that: it comprises host computer (1), usb interface module (2), central processing module (3), signal exports and processing module (4), load module (5), internal memory (6) and power module (7), wherein, the test instruction communication ends of described host computer (1) connects the test instruction communication ends of central processing module (3) by usb interface module (2), the test signal communication ends connection signal output of described central processing module (3) and the test signal communication ends of processing module (4), the control command input end of described central processing module (3) connects load module (5), the storage data communication end of described central processing module (3) connects internal memory (6), the power control signal output terminal of described central processing module (3) connects the control end of power module (7), the output terminal of power module (7) is used for powering to LCD module under test (8).
2. the liquid crystal module testing device of USB virtual serial port according to claim 1 and Ethernet interface, is characterized in that: described usb interface module (2), central processing module (3), signal export and processing module (4), load module (5), internal memory (6) and power module (7) constitute liquid crystal test module.
3. the liquid crystal module testing device of USB virtual serial port according to claim 1 and Ethernet interface, is characterized in that: described central processing module (3) is ARM nucleus module.
4. the liquid crystal module testing device of USB virtual serial port according to claim 1 and Ethernet interface, is characterized in that: described load module (5) is man-machine device.
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| CN201520123473.0U CN204596389U (en) | 2015-03-03 | 2015-03-03 | The liquid crystal module testing device of USB virtual serial port and Ethernet interface |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104680960A (en) * | 2015-03-03 | 2015-06-03 | 武汉精测电子技术股份有限公司 | Liquid crystal module test device with USB virtual serial port and Ethernet port and liquid crystal module test method |
| CN109522165A (en) * | 2018-09-19 | 2019-03-26 | 昆山国显光电有限公司 | Display module test platform |
| CN111930647A (en) * | 2020-09-09 | 2020-11-13 | 蘑菇车联信息科技有限公司 | USB interface working mode selection device and method and android device |
-
2015
- 2015-03-03 CN CN201520123473.0U patent/CN204596389U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104680960A (en) * | 2015-03-03 | 2015-06-03 | 武汉精测电子技术股份有限公司 | Liquid crystal module test device with USB virtual serial port and Ethernet port and liquid crystal module test method |
| CN109522165A (en) * | 2018-09-19 | 2019-03-26 | 昆山国显光电有限公司 | Display module test platform |
| CN109522165B (en) * | 2018-09-19 | 2020-05-15 | 昆山国显光电有限公司 | Display module testing platform |
| US11624788B2 (en) | 2018-09-19 | 2023-04-11 | Kunshan Go-Visionox Opto-Electronics Co., Ltd. | Display module test platform |
| CN111930647A (en) * | 2020-09-09 | 2020-11-13 | 蘑菇车联信息科技有限公司 | USB interface working mode selection device and method and android device |
| CN111930647B (en) * | 2020-09-09 | 2020-12-25 | 蘑菇车联信息科技有限公司 | USB interface working mode selection device and method and android device |
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Address after: 430070 Hubei City, Hongshan Province, South Lake Road, No. 53, Hongshan Venture Center, building on the 4 floor, No. Patentee after: Wuhan fine test electronics group Limited by Share Ltd Address before: 430070 Hubei City, Hongshan Province, South Lake Road, No. 53, Hongshan Venture Center, building on the 4 floor, No. Patentee before: Wuhan Jingce Electronic Technology Co., Ltd. |