Peak detecting digital scan converter

Details Peak detecting digital scan converter Peak detecting digital scan converter

1977-08-18

1979-09-11

Britton, Howard W.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

73611, 358112, H04N 718

Patent

active

041677536

ABSTRACT:
An ultrasonic multi-sector scanner performs overlapping scans such that echoes are generated by many steered beams. A peak reading digital scan converter has a random access memory with a matrix of memory cell locations corresponding to image pixels. An analog or digital comparator compares the incoming echo amplitude with the stored amplitude at an addressed memory location, and writes the incoming data into that location only when the incoming amplitude is larger. The stored largest echo amplitude data is read out in a raster at TV rates for imaging on a cathode ray tube.

REFERENCES:
patent: 3864660 (1975-02-01), Ranalli
patent: 3864661 (1975-02-01), Ranalli
patent: 4057836 (1977-11-01), Munsey
patent: 4058001 (1977-11-01), Waxman
patent: 4063451 (1977-12-01), Dory
patent: 4070905 (1978-01-01), Kossoff

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