Method of recording video signals within a predetermined bit/uni

Details Method of recording video signals within a predetermined bit/uni Method of recording video signals within a predetermined bit/uni

1982-02-24

1985-04-23

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Recording for changing duration, frequency or redundant...

360 22, G11B 500, G11B 1502

Patent

active

045133280

ABSTRACT:
Digital data are stored on a magnetic tape at a bit rate which does not exceed the storage capabilities of the tape of about 80 Mbit/s, although received digital video signals have a bit rate of about 100 Mbit/s per channel in a two-channel system. In order to record such a bit-stream, the signals are applied to a head wheel having at least three transducer heads, and the bits are applied to the transducer heads in time-expanded form, the time-expanded signals being recompressed upon reproduction. Time compression and expansion is preferably carried out by buffer memories which have data entered and read-out in the FIFO method, at respectively different clock rates, switched under control of a control unit (24) which receives head wheel position input signal information.

REFERENCES:
patent: 4222078 (1980-09-01), Bock
patent: 4394686 (1983-07-01), Horstmann

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