Conic generator for on-the-fly digital television display

Details Conic generator for on-the-fly digital television display Conic generator for on-the-fly digital television display

1974-12-03

1976-10-19

Malzahn, David H.

Registers

Transfer mechanism

Traveling pawl

340324AD, G06F 314

Patent

active

039872840

ABSTRACT:
Apparatus is disclosed to implement a recursive technique to generate the coordinates of horizontal raster line components which intersect a conic-section shape to be represented. The apparatus cooperates with a refresh buffer which stores the video data in coded form to be read out ordered by raster line location and an intermediate buffer which permits these coded data to be read as many times as is needed during the course of displaying one frame of pictorial information, and then to be dropped, and a partial raster assembly storage which permits data to be written randomly along a given raster line.

REFERENCES:
patent: 3761765 (1973-09-01), Machin et al.
patent: 3763363 (1973-10-01), Saita et al.
patent: 3781850 (1973-12-01), Gicca et al.
patent: 3792464 (1974-02-01), Hamada et al.
patent: 3821731 (1974-06-01), Levine
patent: 3848232 (1974-11-01), Leibler

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