Bistable matrix television display system

Details Bistable matrix television display system Bistable matrix television display system

1975-05-20

1977-02-01

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

315169TV, 340324M, H04N 566

Patent

active

040062988

ABSTRACT:
A television display system is described in which a full resolution, interlaced scanned display of real-time images is provided on a bistable matrix display panel. The display system has a gray scale with 64 discrete levels of brightness. The brightness levels are achieved with each panel cell turning on for one of 63 different accumulative intervals of time in response to digitized TV signals. From zero to six separate pulses of light are produced from each cell. The durations of these pulses form a geometric progression such that each of the sixty-four possible combinations of pulses has a distinct cumulative time interval. The analog TV signal is converted to a 6-bit digital word for each cell of the display panel. A memory and control system are provided for storage of the words. The least significant bit of the digitized TV signal controls the shortest pulse for the particular cell, and the most significant bit controls the longest pulse. Each bit of the digitized TV signal controls a pulse twice as long as the one controlled by the previous bit. By controlling the shortest duration pulses of the cell first and the longest duration pulses last, the data memory requires no more than one storage location per cell for the six bits of the signal.

REFERENCES:
patent: 3021387 (1962-02-01), Rajchman
patent: 3576394 (1971-04-01), Lee
patent: 3740570 (1973-06-01), Kaelin et al.
patent: 3742483 (1973-06-01), Ogle
patent: 3761617 (1973-09-01), Tsuchiya et al.
patent: 3838209 (1974-09-01), Tsuchiya et al.
patent: 3863023 (1975-01-01), Schmersal et al.

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