Histogram chip for line summing, line grabbing and histogramming

Details Histogram chip for line summing, line grabbing and histogramming Histogram chip for line summing, line grabbing and histogramming

1996-02-20

2000-07-04

Lee, Michael H.

Television

Image signal processing circuitry specific to television

348672, 348164, 382168, H04N 514, G06K 900

Patent

active

060846402

ABSTRACT:
A time shared histogram chip (80) implemented in a system for manipulating video signal data. The system includes a processor (82) for controlling system operation and for processing a video signal input into the system. The time shared histogram chip (80) accumulates video signal data in a format readable by the processor (82). The histogram chip (80) is operative to perform histogramming, video line summing and video line grabbing functions. Control means (100) is operatively connected to the processor and enables the processor (82) to selectively control the mode of operation of the histogram chip (80).

REFERENCES:
patent: 5034817 (1991-07-01), Everett, Jr.
patent: 5140649 (1992-08-01), Kageyama
patent: 5249241 (1993-09-01), Silverman et al.
patent: 5490222 (1996-02-01), Sugimoto
patent: 5663563 (1997-09-01), Herbst et al.
A. J. McCollum et al., "A Histogram Modification Unit for Real-time Image Enhancement"; Computer Vision Graphics and Image Processing, vol. 42, No. 1, Apr. 1, 1988, pp. 387-398.

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