Electronic time compressor/expander utilizing magnetic storage

Details Electronic time compressor/expander utilizing magnetic storage Electronic time compressor/expander utilizing magnetic storage

1975-01-09

1976-12-14

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Recording for changing duration, frequency or redundant...

179 1555R, G11B 502, G11B 2710

Patent

active

039979130

ABSTRACT:
Electronic signals are compressed or expanded by writing periodic samples the signal onto one side of a thin magnetic disc at a first rate and then reading the samples off the other side of the disc at a second, and different, rate. In another embodiment of the invention, the samples are written onto a rotating magnetic ring or disc by a plurality of write/erase heads which are selectively gated to the signal source. The samples are then read off the disc by a plurality of read-heads which are selectively gated to the external load.

REFERENCES:
patent: 2903521 (1959-09-01), Ellison
patent: 3315242 (1967-04-01), Haddad
patent: 3334193 (1967-08-01), Dow
patent: 3409744 (1968-11-01), Liberman
patent: 3621150 (1971-11-01), Pappas

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