High-resolution information storage and retrieval system includi

Details High-resolution information storage and retrieval system includi High-resolution information storage and retrieval system includi

1978-01-19

1979-02-13

Wolff, John H.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

360 72, H04N 136

Patent

active

041398696

ABSTRACT:
A high-resolution video filling system making use of a standard low-resolution magnetic tape video recorder for the storage and retrieval of documentary information. In the storage mode, each document to be filed is scanned by a high-resolution video camera to produce a video signal representing a single image frame having a predetermined number of scan lines that is a multiple of the number of scan lines in a standard low-resolution image frame. The image frame signal from the video camera is divided into a series of fields each having a like number of scan lines, the fields being sequentially applied to the recorder to produce on the moving tape thereof a set of parallel transverse tracks one for each field, the set representing a single image frame. In the retrieval mode, the set of tracks representing a selected document is played back by the recorder and written into an electronic refresh buffer whose contents are then repeatedly read out into a high-resolution monitor at a rate producing a flicker-free image of the selected document.

REFERENCES:
patent: 3095473 (1963-06-01), Roizen
patent: 3514537 (1970-03-01), Uemura
patent: 3573356 (1971-04-01), Toce
patent: 3594729 (1971-07-01), Uemura
patent: 3715481 (1973-02-01), Harr
patent: 3761711 (1973-09-01), Nakamura
patent: 3803352 (1974-04-01), Goldberger
patent: 3934268 (1976-01-01), Uemura

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