Video frame grabber comprising analog video signals analysis sys

Details Video frame grabber comprising analog video signals analysis sys Video frame grabber comprising analog video signals analysis sys

1997-02-03

1998-06-23

Hsia, Sherrie

Television

Image signal processing circuitry specific to television

348537, H04N 514

Patent

active

057710775

ABSTRACT:
In a video frame grabber for digitizing analog video signals which have a pure analog video signal component and a synchronization signal component, the synchronization signals are digitized along with the pure analog video signals. Video gain and offset, sync gain, and sync threshold can be adjusted electronically. A variable time delay can be imposed on the sampling clock signals and on horizontal reference signals. Optimal values can be determined for the various parameters.

REFERENCES:
patent: 4531154 (1985-07-01), Hallock
patent: 5181115 (1993-01-01), Flamm
"High Level Design Tools for Technology Independent Design" by Holley et al.; Electro, vol. 14, Apr. 11, 1989, Los Angeles; pp. 1-10, XP000053977; p. 2, Left col., Line 1, Right col., Line 20.
"Proceedings of the Third International Congress on Advances in Non-Impact Printing Technologies", San Francisco Aug. 24-28,1986, Gaynor, J., pp 239-245, XP00004328 Suzuki, E. Color Video Printer and It's Printing Materials in Canon Still Video System, p. 239, Line 10-Line 13; p. 240, Line 1-Line 7; FIGURE 2.

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