Superimposition of non-visual signals upon an image signal in a

Details Superimposition of non-visual signals upon an image signal in a Superimposition of non-visual signals upon an image signal in a

1984-02-06

1987-02-10

Groody, James J.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

358 41, 358209, H04N 530, H04N 904

Patent

active

046426876

ABSTRACT:
A signal is generated for producing a video display carrying superimposed images, at least one of which is derived from a system for detection of non-visual signals, such as an ultrasonic inspection device or a backscatter detector of penetrating radiation. Accurate registration of the superimposed images is achieved by providing for the system for detection a moveable probe indicating the location of inspection by the detector system, a point source of light or other radiation to which a video camera responds on the probe which point source is `on` when the detector response is positive, and a comparator and memory system in which is built up a store of all those image locations where the camera observed the point source `on`. Output from the memory system is mixed with the camera video signal so that a bright point is produced at each of those locations thereby to produce the superimposed image. By providing a separate memory system for red, green and blue color signals from a color camera, different colored point sources of light may be used to produce a range of superimposed images of different colors.

REFERENCES:
patent: 3465145 (1969-09-01), Leiter
patent: 4026144 (1977-05-01), Gericke et al.
patent: 4160997 (1979-07-01), Schwartz
patent: 4246607 (1981-01-01), Vijverberg
patent: 4349739 (1982-09-01), Annis
patent: 4494001 (1985-01-01), Peck
patent: 4509061 (1985-04-01), Nomoto et al.

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