Device for delineating zones in a video image display

Details Device for delineating zones in a video image display Device for delineating zones in a video image display

1978-09-01

1981-01-13

Griffin, Robert L.

Facsimile and static presentation processing

Facsimile

Specific signal processing circuitry

250445T, 358183, H04N 532

Patent

active

042452449

ABSTRACT:
Data derived from multiple x-ray views of a body layer is processed in accordance with an image reconstruction algorithm by a central processing unit (CPU) to result in a matrix of digital data corresponding with picture elements (pixels) which are for being displayed on a tv or video monitor. A device for delineating or identifying a region in the displayed picture with a box, irregular trace, or cursor with a bright dotted line uses a trackball to generate data signals corresponding in position with pixels in the matrix. The trackball generated data is processed for producing video picture modulating signals corresponding with the pixels in the matrix to which they positionally relate. The modulating signals are overlayed on the composite video signals from the display controller with a video mixer.

REFERENCES:
patent: 3780223 (1973-12-01), Perry
patent: 3835245 (1974-09-01), Pieters
patent: 3911419 (1975-10-01), Bates et al.
patent: 3954098 (1976-05-01), Dick et al.
patent: 3987685 (1976-10-01), Opocensky
patent: 4079417 (1978-03-01), Scudder

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