Method and apparatus for implementing an overlay cursor and...

Details Method and apparatus for implementing an overlay cursor and... Method and apparatus for implementing an overlay cursor and...

2004-05-06

2008-07-01

Hjerpe, Richard (Department: 2629)

Computer graphics processing and selective visual display system

Display with fail/safe testing feature

C345S204000, C345S157000

Reexamination Certificate

active

07394474

ABSTRACT:
A method and apparatus for implementing a video test generator having an overlay cursor and an associated scope trigger are presented. A user interface permits a user to move a cursor across a displayed image, and to select a scope trigger point in the analog video stream based on the location of the cursor in the displayed image. Video waveforms associated with particular image pixels of interest or groups of pixels are observed on an oscilloscope by placing the cursor over the subject pixels or pixels on the video display and using the derived scope trigger to time the capture of the video waveform on the oscilloscope. The cursor is generated by tracking the horizontal and vertical position of the cursor, and altering or substituting out the video signal where the pattern of the cursor should appear.

REFERENCES:
patent: 5387925 (1995-02-01), Melling et al.
patent: 6483503 (2002-11-01), Spannaus et al.

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