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OSD interface switching scheme based on FPGA

An interface switching and solution technology, applied in the computer field, can solve the problems of many main chips and inconvenient circuit layout, and achieve the effect of reducing power consumption, saving the number of chips, and improving stability

Inactive Publication Date: 2016-10-12
INSPUR GROUP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the entire multi-unit server, there are many main chips needed to realize the KVM function, which is inconvenient in circuit layout

Method used

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  • OSD interface switching scheme based on FPGA

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Embodiment Construction

[0016] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments.

[0017] A kind of based on FPGA of the present invention realizes OSD interface switching scheme, its structure comprises:

[0018] Including PC, multi-unit server, ISE tool, keil tool;

[0019] A MC8051 IP core is embedded inside the FPGA as a control unit, and a hardware circuit is built inside the FPGA by a USB module, an SD module, a DDR module, and a VGA module;

[0020] Use the USB IP core and MCU to check the key value interception of the USB device, wait for the key value to call the OSD interface to be intercepted, and then send the command to read the picture to the SD card module through the MCU, and the SD card module will send the picture to the In the DDR control module, the DDR control module sends the stored picture information to the VGA display module, and sends it to the external display device through the VGA interface for d...

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Abstract

The invention discloses an OSD interface switching scheme based on FPGA, which belongs to the field of computer technology and includes a PC, a multi-unit server, an ISE tool, and a keil tool; an MC8051 IP core is embedded in the FPGA as a control unit, and is composed of a USB module, an SD The module, DDR module, and VGA module build hardware circuits inside the FPGA; check the USB device for key value interception through the USB IP core and MCU, send a read command to the SD card module through the MCU, and the SD card module sends the picture to the DDR control module. The DDR control module sends the stored picture information to the VGA display module, and sends it to the external display device through the VGA interface. The present invention replaces the previous method of displaying OSD by dot matrix through the method of displaying OSD channel through pictures, reduces power consumption, saves the number of chips, and improves the stability of the system.

Description

technical field [0001] The invention relates to the technical field of computers, in particular to an FPGA-based OSD interface switching scheme. Background technique [0002] In previous multi-unit servers, the calling of the OSD interface was realized through a single-chip microcomputer plus an OSD chip. In the entire multi-unit server, many main chips are required to realize the KVM function, which is inconvenient in circuit layout. Contents of the invention [0003] The technical task of the present invention is to provide a solution based on FPGA to realize OSD interface switching, to solve the problem that the management board in the multi-unit server uses a special OSD chip to realize the OSD function, and the method of displaying the OSD channel through the picture replaces the previous method of displaying the OSD by dot matrix. And display the channel to be selected more intuitively in the form of pictures, and use FPGA to improve the stability of system design. ...

Claims

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Application Information

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IPC IPC(8): G06F9/44
CPCG06F9/451
Inventor 张孝飞金长新刘强
Owner INSPUR GROUP CO LTD
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