CN107578734A - The generating means and production method of a kind of rgb signal - Google Patents
The generating means and production method of a kind of rgb signal Download PDFInfo
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- CN107578734A CN107578734A CN201710757825.1A CN201710757825A CN107578734A CN 107578734 A CN107578734 A CN 107578734A CN 201710757825 A CN201710757825 A CN 201710757825A CN 107578734 A CN107578734 A CN 107578734A
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- rgb signal
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Abstract
A kind of generating means of rgb signal provided by the invention, including fpga chip, crystal oscillator module, memory module, key-press module, I/O ports, fpga chip are connected with power module, crystal oscillator module, memory module, key-press module, I/O ports respectively；Fpga chip includes phase-locked loop pll, and phase-locked loop pll is used to divide and the required frequency of frequency multiplication generation rgb signal；Fpga chip is used for the trigger signal for receiving key-press module output, to read configuration parameter from memory module, produces rgb signal corresponding with the required frequency and is input to I/O ports.The generating means and production method of a kind of rgb signal provided by the invention, rgb signal required for being produced by fpga chip logic with output LCDs, need not move through graphics processor or bridging chip is changed to standard signal, the digitlization display effect of most original can be ensured, ensure image picture quality.
Description
Technical field
The present invention relates to signal imitation to produce field, more particularly to the generating means and production method of a kind of rgb signal.
Background technology
Liquid crystal display has turned into the main flow of current flat panel TV and computer display terminal, and the research of liquid crystal display is set
Meter, production, examine etc. department even consumer need with some quantitatively or qualitatively method and index go examine liquid crystal display
Quality and characteristic.When detecting liquid crystal screen characteristics and quality, it is necessary to control liquid crystal display to show some standard signals.More at present
It is the analog signals such as AV signals, VGA signals or YPhPr signals caused by existing signal generating apparatus.These analog signals need
Digital RGB signal is converted into by graphics processor or bridging chip, is then input to the scan control circuit production of liquid crystal display again
Raw respective image.This process inevitably makes picture signal produce a certain degree of distortion and loss, influences image matter
Amount.
The content of the invention
The present invention is insufficient existing for above-mentioned technology in order to solve, there is provided the generating means and production method of a kind of rgb signal,
Need not move through graphics processor or bridging chip is changed to standard signal, it is ensured that the digitlization display effect of most original,
Ensure image picture quality.
A kind of a kind of generating means of rgb signal of generating means of rgb signal provided by the invention, it is characterised in that bag
Include fpga chip, crystal oscillator module, memory module, key-press module；The crystal oscillator module is used to provide clock signal to fpga chip；
The memory module is used for the various configuration parameters of storage system；The key-press module, which is used to export when receiving triggering command, to be touched
Signal；Wherein, the fpga chip is connected with crystal oscillator module, memory module, key-press module respectively, and the fpga chip includes
Phase-locked loop pll, the phase-locked loop pll are used for the required frequency that rgb signal is produced according to clock signal frequency dividing and frequency multiplication, institute
The trigger signal that fpga chip is used to receive the key-press module output is stated, is joined with reading the configuration from the memory module
Number, so as to produce rgb signal corresponding with the required frequency.
Further, the memory module is FLASH modules.
Further, the generating means also includes JTAG modules, the JTAG modules be used for by program code send to
The memory module.
Further, the generating means also includes USB2.0 modules or USB turns UART modules；Wherein, the FPGA cores
Piece turns UART modules and peripheral device communication by USB2.0 modules or USB, to adjust the parameter of the rgb signal.
Further, the generating means also includes power module, and the power module is used to receive DC voltage.
Further, the key-press module includes reset key, broadcasting/Pause key, downturning key, upturning key.
Further, the generating means includes SPI interface or IIC interfaces, and the SPI interface or the IIC interfaces are used
In being connected and carry out data transmission with external equipment.
The present invention also provides a kind of method for generation of rgb signal, including power module is powered to generating means；Fpga chip
Download program code, and described program code is sent to memory module and stored；The fpga chip produces the required of rgb signal
Frequency；The fpga chip receives the trigger signal of key-press module output, and reads the configuration parameter from the memory module,
So as to export rgb signal corresponding with the required frequency.
Further, fpga chip download program code, and described program code is sent to memory module storage included：
The fpga chip downloads described program code by JTAG modules.
Further, methods described also includes：I/O ports receive the fpga chip and export the rgb signal, and by institute
Rgb signal is stated to export to LCD interfaces.
Further, the method for generation also turns UART modules including the fpga chip by USB2.0 modules or USB
With peripheral device communication, to adjust the parameter of the rgb signal.
The generating means and production method of a kind of rgb signal provided by the invention, RGB letters are produced by fpga chip logic
Number, need not move through graphics processor or bridging chip is changed to standard signal, it is ensured that the digitlization display effect of most original
Fruit, ensure image picture quality.
Brief description of the drawings
Fig. 1 is hardware catenation principle block diagram provided in an embodiment of the present invention.
Fig. 2 is the flow chart of generation rgb signal provided in an embodiment of the present invention.
Embodiment
Fig. 1 is hardware catenation principle block diagram provided in an embodiment of the present invention.As shown in figure 1, the generating means of rgb signal,
It includes fpga chip 5, crystal oscillator module 8, memory module 1, key-press module 9.
In an embodiment of the present invention, generating means also includes power module 4, and power module 4 is used to receive direct current
Pressure.
In an embodiment of the present invention, the connection of power module 4 receives DC voltage and DC voltage is converted into FPGA cores
Operating voltage needed for piece 5, crystal oscillator module 8, memory module 1 and key-press module 9, such as 3.3V, 1.2V etc..
Specifically, the magnitude of voltage of DC voltage is 5 to 18V.
Wherein, memory module 1 is FLASH modules.
Wherein, crystal oscillator module 8 is used to provide clock signal to fpga chip 5.
Wherein, memory module 1 is used for the various configuration parameters of storage system.
Wherein, key-press module 9 is used to export trigger signal when receiving triggering command.
Wherein, fpga chip 5 is connected with crystal oscillator module 8, memory module 1, key-press module 9 respectively.Fpga chip 5 includes lock
Phase ring PLL, phase-locked loop pll be used for according to clock signal frequency dividing and frequency multiplication produce the internal logic time sequence frequency of fpga chip 5 and
The required frequency of rgb signal, fpga chip 5 is used for the trigger signal for receiving the output of key-press module 9, to be read from memory module 1
Configuration parameter, so as to obtain the required frequency of the rgb signal by phase-locked loop pll inside FPGA, and touched by adder, D types
The sequential logics such as hair device combine and produce rgb signal.
Rgb signal includes the synchronous letter of data-signal (R0~R7, G0~G7, B0~B7), pixel clock signal (DCLK), row
Number (Hsync), field sync signal (Vsync), data enable signal (DE).Wherein, data-signal (R0~R7, G0~G7, B0~
B7 it is) video or the data display content signal of image.Pixel clock signal (DCLK), for by RGB data signal according to one
Sequential delivery is determined into liquid crystal panel so that circuit cooperates in harmony according to certain beat in liquid crystal panel, also serves to ensure that
The correctness of RGB data transmission, i.e., just to RGB only when pixel clock signal (DCLK) trailing edge (or rising edge) arrives
Data-signal is read out.The effect of line synchronising signal (Hsync) is to select effective row signal spacing on liquid crystal panel.Field is same
The effect for walking signal (Vsync) is to select effective field signal spacing on liquid crystal panel.It is same in line synchronising signal (Hsync) and field
Walk under signal (Vsync) collective effect, can be by the effective video selected on liquid crystal panel or picture signal section.Data enable
Signal (DE) is in order to distinguish effective and invalid data signal, because being input to the video of liquid crystal panel or the RGB of picture signal
In signal, effective rgb signal only accounts for the part of signal period, and the horizontal blanking and field blanking interval in the signal period are not wrapped
Containing effective rgb signal, i.e. liquid crystal panel circuit can read out effective RGB data signal by data enable signal (DE).
In addition, in an embodiment of the present invention, fpga chip 5 is additionally operable to export white field grayscale signal etc., so that LCD shows
Show that test uses.
In an embodiment of the present invention, generating means also includes I/O ports, and I/O ports receive fpga chip 5 and exported
Rgb signal, and rgb signal is exported to LCD interfaces 3, to carry out LCD display tests.
In an embodiment of the present invention, generating means also includes JTAG modules 2, and JTAG modules 2 are used for program code
Send to memory module 1.Program code is write with Verilog HDL hardware languages, and such fpga chip is merely with simple
Combined logical structure and sequential logic structure can just produce rgb signal.
In an embodiment of the present invention, generating means also includes USB2.0 modules 6 or USB turns UART modules 7.Wherein,
Fpga chip 5 turns UART modules 7 and peripheral device communication by USB2.0 modules 6 or USB, to adjust the parameter of rgb signal.
In an embodiment of the present invention, key-press module 9 includes reset key, broadcasting/Pause key, downturning key, upturning key.
In an embodiment of the present invention, generating means includes SPI interface or IIC interfaces, and SPI interface or IIC interfaces are used
In being connected and carry out data transmission with external equipment.
In an embodiment of the present invention, generating means is integrally disposed on a pcb board.
In an embodiment of the present invention, key-press module 9 includes reset key, broadcasting/Pause key, downturning key, upturning key, also
It may include order and strong and weak button, rgb signal exported for controlling.
In an embodiment of the present invention, generating means also includes SPI interface, IIC interfaces, for being connected with external equipment
And transmit data.
Fig. 2 is the flow chart of generation rgb signal provided in an embodiment of the present invention.As shown in Fig. 2 the generation side of rgb signal
Method, including：
Step S21：Power module 4 is powered to generating means；
Specifically, generating means includes fpga chip 5, crystal oscillator module 8, memory module 1, key-press module 9.
Step S22：The download program code of fpga chip 5, and program code is sent to memory module 1 and stored；
Step S23：Fpga chip 5 produces the required frequency of rgb signal；
Step S24：Fpga chip 5 receives the trigger signal that key-press module 9 exports, and reads configuration ginseng from memory module 1
Number, so as to export rgb signal corresponding with required frequency.
In an embodiment of the present invention, the download program code of fpga chip 5, and program code is sent to memory module
1 storage includes：Fpga chip 5 passes through the download program code of JTAG modules 2.
In an embodiment of the present invention, method for generation also includes：I/O ports receive fpga chip 5 and export rgb signal,
And export rgb signal to LCD interfaces 3, to carry out LCD display tests.
In an embodiment of the present invention, method for generation also includes fpga chip 5 and turned by USB2.0 modules 6 or USB
UART modules 7 and peripheral device communication, to adjust the parameter of rgb signal.
The generating means and production method of a kind of rgb signal provided by the invention, RGB letters are produced by fpga chip logic
Number, need not move through graphics processor or bridging chip is changed to standard signal, it is ensured that the digitlization display effect of most original
Fruit, ensure image picture quality.
The above described is only a preferred embodiment of the present invention, any formal limitation not is made to the present invention, though
So the present invention is disclosed above with preferred embodiment, but is not limited to invent, any person skilled in the art,
Do not departing from the range of inventive technique scheme, when the technology contents using the disclosure above make a little change or are modified to equivalent
The equivalent embodiment of change, as long as being without departing from inventive technique scheme content, the technical spirit according to invention is to above example
Any simple modification, equivalent change and modification made, in the range of still falling within technical solution of the present invention.
Claims (10)
1. a kind of generating means of rgb signal, it is characterised in that including fpga chip, crystal oscillator module, memory module, button mould
Block；
The crystal oscillator module is used to provide clock signal to fpga chip；
The memory module is used for the various configuration parameters of storage system；
The key-press module is used to export trigger signal when receiving triggering command；
Wherein, the fpga chip is connected with crystal oscillator module, memory module, key-press module respectively, and the fpga chip includes lock
Phase ring PLL, the phase-locked loop pll is used for the required frequency that rgb signal is produced according to clock signal frequency dividing and frequency multiplication, described
Fpga chip is used for the trigger signal for receiving the key-press module output, to read the configuration parameter from the memory module,
So as to produce rgb signal corresponding with the required frequency.
2. the generating means of rgb signal as claimed in claim 1, it is characterised in that the generating means also includes JTAG moulds
Block, the JTAG modules are used to send program code to the memory module.
3. the generating means of rgb signal as claimed in claim 1, it is characterised in that the generating means also includes USB2.0
Module or USB turn UART modules；
Wherein, the fpga chip turns UART modules and peripheral device communication by USB2.0 modules or USB, with described in adjustment
The parameter of rgb signal.
4. the generating means of rgb signal as claimed in claim 1, it is characterised in that the generating means also includes power supply mould
Block, the power module are used to receive DC voltage.
5. the generating means of rgb signal as claimed in claim 1, it is characterised in that the key-press module includes reset key, broadcast
Put/Pause key, downturning key, upturning key.
6. the generating means of rgb signal as claimed in claim 1, it is characterised in that the generating means include SPI interface or
IIC interfaces, the SPI interface or the IIC interfaces are used to be connected and carry out data transmission with external equipment.
7. a kind of method for generation of rgb signal, including：
Power module is powered to generating means；
Fpga chip download program code, and described program code is sent to memory module and stored；
The fpga chip produces the required frequency of rgb signal；
The fpga chip receives the trigger signal of key-press module output, and reads the configuration parameter from the memory module,
So as to export rgb signal corresponding with the required frequency.
8. the method for generation of rgb signal as claimed in claim 7, it is characterised in that fpga chip download program code, and will
Described program code, which is sent to memory module storage, to be included：
The fpga chip downloads described program code by JTAG modules.
9. the method for generation of rgb signal as claimed in claim 7, it is characterised in that methods described also includes：I/O ports connect
Receive the fpga chip and export the rgb signal, and the rgb signal is exported to LCD interfaces.
10. the method for generation of rgb signal as claimed in claim 7, it is characterised in that the method for generation also includes：
The fpga chip turns UART modules and peripheral device communication by USB2.0 modules or USB, to adjust the rgb signal
Parameter.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201710757825.1A CN107578734B (en) | 2017-08-29 | 2017-08-29 | A kind of generating means and production method of rgb signal |
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|---|---|---|---|
| CN201710757825.1A CN107578734B (en) | 2017-08-29 | 2017-08-29 | A kind of generating means and production method of rgb signal |
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| CN107578734A true CN107578734A (en) | 2018-01-12 |
| CN107578734B CN107578734B (en) | 2018-10-26 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036276A (en) * | 2018-09-25 | 2018-12-18 | 深圳市峰泳科技有限公司 | A kind of Micro-OLED miniscope driving circuit |
| CN109817132A (en) * | 2019-02-22 | 2019-05-28 | 重庆两江联创电子有限公司 | Liquid crystal display die set test board |
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| JP2000244892A (en) * | 1999-02-22 | 2000-09-08 | Aiphone Co Ltd | Color video transmission device |
| CN101540153A (en) * | 2009-05-07 | 2009-09-23 | 北京牡丹视源电子有限责任公司 | Method for generating display image signals and display image signal generator |
| CN201667056U (en) * | 2009-12-21 | 2010-12-08 | 中国人民解放军第三军医大学第三附属医院 | Brain-machine interface visual stimulating device based on programmable gate array |
| CN205539803U (en) * | 2016-02-04 | 2016-08-31 | 无锡市速波精密机械有限公司 | A MIPI interface signals source for LCD screen detects |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2000244892A (en) * | 1999-02-22 | 2000-09-08 | Aiphone Co Ltd | Color video transmission device |
| CN101540153A (en) * | 2009-05-07 | 2009-09-23 | 北京牡丹视源电子有限责任公司 | Method for generating display image signals and display image signal generator |
| CN201667056U (en) * | 2009-12-21 | 2010-12-08 | 中国人民解放军第三军医大学第三附属医院 | Brain-machine interface visual stimulating device based on programmable gate array |
| CN205539803U (en) * | 2016-02-04 | 2016-08-31 | 无锡市速波精密机械有限公司 | A MIPI interface signals source for LCD screen detects |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109036276A (en) * | 2018-09-25 | 2018-12-18 | 深圳市峰泳科技有限公司 | A kind of Micro-OLED miniscope driving circuit |
| CN109817132A (en) * | 2019-02-22 | 2019-05-28 | 重庆两江联创电子有限公司 | Liquid crystal display die set test board |
Also Published As
| Publication number | Publication date |
|---|---|
| CN107578734B (en) | 2018-10-26 |
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