US Patent 7479981 Testing a vertical blanking interval signal

Patent 7479981 was granted and assigned to Microsoft on January, 2009 by the United States Patent and Trademark Office.

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Adrian Mircea Sima0

Anand Ganesh0

Percy A Tierney0

Tuan D Le0

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Patent abstract

A vertical blanking interval (VBI) signal testing tool captures, isolates, and analyzes a VBI signal to determine the quality of the VBI signal or signal source. A digitized VBI signal is received and analyzed according to industry standards. The VBI signal is first examined using thresholds, threshold points, and other points as a way of discerning waveforms in the signal and their individual characteristics. Thereafter, deviations of the VBI signal from industry standards are logged or displayed for review.

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US Patent 11699408 Performing asynchronous memory clock changes on multi-display systems

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