CN102043599A - VGA (Video Graphics Array) image signal generator of FPGA (Field Programmable Gate Array) - Google Patents
VGA (Video Graphics Array) image signal generator of FPGA (Field Programmable Gate Array) Download PDFInfo
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- CN102043599A CN102043599A CN2009101781981A CN200910178198A CN102043599A CN 102043599 A CN102043599 A CN 102043599A CN 2009101781981 A CN2009101781981 A CN 2009101781981A CN 200910178198 A CN200910178198 A CN 200910178198A CN 102043599 A CN102043599 A CN 102043599A
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- fpga
- signal generator
- vga
- display
- singlechip controller
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Abstract
The invention discloses a VGA (Video Graphics Array) image signal generator of an FPGA (Field Programmable Gate Array) and relates to a signal generator. The signal generator comprises an LCD (Liquid Crystal Display) (1), a singlechip controller (2), a 4*4 rectangular keyboard (3), a power supply (4), an FPGA (5), a clock circuit (6), an interface circuit (7) and a VGA display (8), wherein the LCD (1) is connected with the singlechip controller (2); the singlechip controller (2) is connected with the 4*4 rectangular keyboard (3) and the FPGA (5); the power supply (4) is connected with the FPGA (5); the clock circuit (6) is connected with the FPGA (5); the FPGA (5) is connected with the interface circuit (7); and the interface circuit (7) is connected with the VGA display (8). The signal generator can be used for outputting various digital signals, character signals, color bar signals and ROM (Read Only Memory) image signals.
Description
Technical field:
The present invention relates to a kind of signal generator, especially relates to the VGA image signal generator of a kind of FPGA.
Background technology:
The design of VGA picture signal generator relates to the processing of view data, and is higher to the operating rate and the performance requirement of circuit, and the clock frequency that the VGA industrial standard requires uses traditional design of electronic circuits method to be difficult to realize up to 25MHz.Adopt special-purpose video frequency processing chip, its designing technique difficulty is big, cost of development is high.
Summary of the invention:
The VGA image signal generator that the purpose of this invention is to provide a kind of FPGA, it can be able to realize various numerals, literal, colour bar, the output of ROM picture signal.The system handles of its image display controller is consuming time less than 20ms, has reached real-time requirement (50/second) fully.Can be used as the display apparatus test signal generator, be applicable to display factory or maintenance personal, computer house and user of unit even personal user, need not to connect picture demonstration, test, the inspection of main frame, with the maintenance post debugging, by observation and analysis, can judge the overall performance or the maintenance back effect of display to test pattern.
In order to solve the existing problem of background technology, the present invention is by the following technical solutions: it is made up of LCD display 1, singlechip controller 2,4X4 rectangle keyboard 3, power supply 4, FPGA5, clock circuit 6, interface circuit 7, VGA display 8; LCD display 1 is connected with singlechip controller 2, and singlechip controller 2 is connected with 4X4 rectangle keyboard 3, and singlechip controller 2 is connected with FPGA5, power supply 4 is connected with FPGA5, clock circuit 6 is connected with FPGA5, and FPGA5 is connected with interface circuit 7, and interface circuit 7 is connected with VGA display 8.
Principle of work: FPGA is the core of total system, by it is programmed exportable RGB tristimulus signals and HS, VS row-field scanning synchronizing signal.Accept the control signal of single-chip microcomputer output as FPGA after, inner data selector module is according to the corresponding image generation module of control signal gating, output image signal, send into the VGA display with the row-field scanning clock signal by 15 pin D type interface circuits, on the VGA display, just can see corresponding coloured image.The required work clock of FPGA is provided by the active crystal oscillator of outside high precision; Singlechip controller is analyzed the keyboard scan result, and the control LCD MODULE shows function corresponding, shows output image and button control model by LCD, and sends corresponding control signal and give FPGA,
The present invention has following beneficial effect: can be able to realize various numerals, literal, colour bar, the output of ROM picture signal.The system handles of its image display controller is consuming time less than 20ms, has reached real-time requirement (50/second) fully.Can be used as the display apparatus test signal generator, be applicable to display factory or maintenance personal, computer house and user of unit even personal user, need not to connect picture demonstration, test, the inspection of main frame, with the maintenance post debugging, by observation and analysis, can judge the overall performance or the maintenance back effect of display to test pattern.
Description of drawings:
Fig. 1 is a structural representation of the present invention.
Embodiment:
Referring to Fig. 1, this embodiment by the following technical solutions: it is made up of LCD display 1, singlechip controller 2,4X4 rectangle keyboard 3, power supply 4, FPGA5, clock circuit 6, interface circuit 7, VGA display 8; LCD display 1 is connected with singlechip controller 2, and singlechip controller 2 is connected with 4X4 rectangle keyboard 3, and singlechip controller 2 is connected with FPGA5, power supply 4 is connected with FPGA5, clock circuit 6 is connected with FPGA5, and FPGA5 is connected with interface circuit 7, and interface circuit 7 is connected with VGA display 8.
Principle of work: FPGA is the core of total system, by it is programmed exportable RGB tristimulus signals and HS, VS row-field scanning synchronizing signal.Accept the control signal of single-chip microcomputer output as FPGA after, inner data selector module is according to the corresponding image generation module of control signal gating, output image signal, send into the VGA display with the row-field scanning clock signal by 15 pin D type interface circuits, on the VGA display, just can see corresponding coloured image.The required work clock of FPGA is provided by the active crystal oscillator of outside high precision; Singlechip controller is analyzed the keyboard scan result, and the control LCD MODULE shows function corresponding, shows output image and button control model by LCD, and sends corresponding control signal and give FPGA,
This embodiment can be able to realize various numerals, literal, colour bar, the output of ROM picture signal.The system handles of its image display controller is consuming time less than 20ms, has reached real-time requirement (50/second) fully.Can be used as the display apparatus test signal generator, be applicable to display factory or maintenance personal, computer house and user of unit even personal user, need not to connect picture demonstration, test, the inspection of main frame, with the maintenance post debugging, by observation and analysis, can judge the overall performance or the maintenance back effect of display to test pattern.
Claims (1)
1.FPGA the VGA image signal generator, it is characterized in that it is made up of LCD display (1), singlechip controller (2), 4X4 rectangle keyboard (3), power supply (4), FPGA (5), clock circuit (6), interface circuit (7), VGA display (8); LCD display (1) is connected with singlechip controller (2), singlechip controller (2) is connected with 4X4 rectangle keyboard (3), singlechip controller (2) is connected with FPGA (5), power supply (4) is connected with FPGA (5), clock circuit (6) is connected with FPGA (5), FPGA (5) is connected with interface circuit (7), and interface circuit (7) is connected with VGA display (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101781981A CN102043599A (en) | 2009-10-19 | 2009-10-19 | VGA (Video Graphics Array) image signal generator of FPGA (Field Programmable Gate Array) |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101781981A CN102043599A (en) | 2009-10-19 | 2009-10-19 | VGA (Video Graphics Array) image signal generator of FPGA (Field Programmable Gate Array) |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102043599A true CN102043599A (en) | 2011-05-04 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009101781981A Pending CN102043599A (en) | 2009-10-19 | 2009-10-19 | VGA (Video Graphics Array) image signal generator of FPGA (Field Programmable Gate Array) |
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| CN (1) | CN102043599A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710557A (en) * | 2012-05-07 | 2012-10-03 | 无锡捷玛物联科技有限公司 | Gateway of internet of things |
| CN102831872A (en) * | 2012-09-05 | 2012-12-19 | 山东大学 | Field programmable gate array-based (FPGA-based) realization method for converting liquid crystal display (LCD) signal to video graphics array (VGA) signal |
| CN107393500A (en) * | 2016-05-16 | 2017-11-24 | 长沙闽壹湖电子科技有限责任公司 | A kind of VGA display circuits design based on NIOSII |
-
2009
- 2009-10-19 CN CN2009101781981A patent/CN102043599A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102710557A (en) * | 2012-05-07 | 2012-10-03 | 无锡捷玛物联科技有限公司 | Gateway of internet of things |
| CN102831872A (en) * | 2012-09-05 | 2012-12-19 | 山东大学 | Field programmable gate array-based (FPGA-based) realization method for converting liquid crystal display (LCD) signal to video graphics array (VGA) signal |
| CN107393500A (en) * | 2016-05-16 | 2017-11-24 | 长沙闽壹湖电子科技有限责任公司 | A kind of VGA display circuits design based on NIOSII |
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Application publication date: 20110504 |