Automatic video overlay alignment method and apparatus

Details Automatic video overlay alignment method and apparatus Automatic video overlay alignment method and apparatus

1997-07-24

2000-05-23

Jankus, Almis R.

Computer graphics processing and selective visual display system

Computer graphics processing

Graph generating

G06T 300

Patent

active

060670924

ABSTRACT:
A method and system to automatically align overlaying video data on a computer screen based on input information of R or G or B data, horizontal synchronization signal data (Hsync) and vertical synchronization signal data (Vsync) automatically reconstructs a pixel clock time base of an offboard underlying graphics source for use in aligning overlaid video using a generated vertical pixel pattern. The system and method also automatically detects a size of an active computer screen region and position of a top left hand corner and a bottom right hand corner of the active computer screen region to align overlaying video using the reconstructed pixel clock time base and a single color block pattern.

REFERENCES:
patent: 5579057 (1996-11-01), Banker et al.
patent: 5668594 (1997-09-01), Cahill, III

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