Video system for storing and retrieving documentary information

Details Video system for storing and retrieving documentary information Video system for storing and retrieving documentary information

1976-11-16

1978-05-16

Wolff, John H.

Dynamic magnetic information storage or retrieval

Monitoring or testing the progress of recording

360 72, H04N 136

Patent

active

040902234

ABSTRACT:
A video system for storing and retrieving 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. The frame signal is electronically divided into a series of fields each having a like number of scan lines, the fields being applied successively to the recording heads of a multi-headed magnetic tape recorder in which the heads are vertically offset with respect to each other. The heads are mounted on a rotating arm and are caused thereby to sweep across a stationary magnetic tape to record the fields thereon in a set of parallel transverse tracks. The tape is indexed to store each document in a distinct set of tracks. In the playback mode, a selected set of tracks on the tape is presented to the heads which are then rotated to continuously yield a series of fields which are applied in the proper sequence to a high resolution video display device to recreate the selected document.

REFERENCES:
patent: 3095473 (1963-06-01), Ruizen
patent: 3514537 (1970-05-01), Uemura
patent: 3573356 (1971-04-01), Toce
patent: 3594729 (1971-07-01), Uemura
patent: 3715481 (1973-02-01), Harr
patent: 3761611 (1973-09-01), Nakamura
patent: 3803352 (1974-04-01), Goldberger
patent: 3934268 (1976-01-01), Uemura
IBM Technical Disclosure Bulletin, vol. 18, No. 8, Jan. 1976, pp. 2705, 2706.

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