Cathode ray tube digitizer

Details Cathode ray tube digitizer Cathode ray tube digitizer

1975-05-08

1977-01-25

Miller, Charles D.

Communications: electrical

Audible indication

Percussion-type sound producer

H03K 1318

Patent

active

040054071

ABSTRACT:
A conventional CRT is modified to include a vertical column of electrodes bedded in the face of the CRT. A single valued function is displayed on the CRT and the vertical and horizontal gains are adjusted to produce the desired sweep on the face of the CRT. The horizontal sweep is then disabled and the sweep is compressed to a single axis, coincident with the column of electrodes. The electron beam, corresponding to the plot, generates signals on the electrodes which are encoded to binary outputs. By continually decoding each three consecutive outputs, corresponding points of the plot are determined.

REFERENCES:
patent: 2632147 (1953-03-01), Mohr
patent: 2848605 (1958-08-01), Kuchinsky
patent: 2997541 (1961-08-01), Grottrup
patent: 3064894 (1962-11-01), Campbell
patent: 3237185 (1966-02-01), Yen
patent: 3845290 (1974-10-01), Reitsma

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