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

1994-06-30

1998-02-10

Hsia, Sherrie

Television

Image signal processing circuitry specific to television

348572, 348525, 348537, 348715, H04N 964

Patent

active

057174695

ABSTRACT:
In a video frame grabber for digitizing analog video signals which have a pure analog video signal component and a synchronisation signal component, the synchronisation 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:
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patent: 4963969 (1990-10-01), Kitaura
patent: 5327240 (1994-07-01), Golston
"Proceedings of the Third International Congress on Advances in Non-Impact Printing Technologies", San Francisco, Aug. 24-28, 1986, Gaynor, J., pp. 239-245, XP 000043428, 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.
"High Level Design Tools for Technology Independent Design" by Holley et al.; Electro, vol. 14, Apr. 11, 1989, Los Angeles; pp. 1-10, XP 000053977; p. 2, left col., line 1, right col., line 20.

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