High definition video OSD menu superposition module based on FPGA and method

Abstract

The invention is applicable to the video image processing technology field. The invention discloses a high definition video OSD menu superposition module based on FPGA and a method. A special-purpose character chip is superposed in a video stream; the OSD menu superposition module comprises a soft core processor and an OSD controller; the OSD controller is connected to video input and video output; and the main port and the slave port of the OSD controller are connected to the main port of the soft core processor and a slave port of a storage device. Through the modification of the code, the character superposition can be more easily displayed on the high definition display or on the super high definition display, code transplantation is easy, the flexibility and expandability can be fully realized, and the poor reliability of adopting a single-chip microcomputer to control time series can be avoided.

Description

technical field [0001] The invention relates to the technical field of video image processing, in particular to an FPGA-based high-definition video OSD menu overlay module and method. Background technique [0002] OSD (On-Screen Display, on-screen menu adjustment method) technology generates some characters or graphics on the display screen to help users understand the information conveyed by the designer. [0003] At present, the commonly used OSD menu is basically superimposed on the video stream through the special character chip controlled by the single-chip microcomputer. Because the OSD technology has very high requirements on the synchronization timing, and the reliability of the single-chip control timing is poor, this solution is mainly used in standard-definition OSD. In terms of technology, it cannot be applied to high-definition and ultra-high-definition technologies. Contents of the invention [0004] The technical problem mainly solved by the present inventi...

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Problems solved by technology

[0003] At present, the commonly used OSD menus are basically superimposed on the video stream through the special character chip controlled by the single-chip microcomputer. Because the OSD technology has very high requirements on the synchronization timing, and the reliability of the timing control by the single-chip microcomputer is poor, this solution is mainly used in standard-definition OSD. Technology, can not be applied to high-definition, ultra-high-definition technology

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