Method and apparatus for implementing an overlay cursor and associated scope trigger in a video test generator
US7394474B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | May 6, 2004 |
| Grant date | Jul 1, 2008 |
| Priority date | — |
| Expiry date | May 13, 2026 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S345/904
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.