System of recording and playback of digitally recorded signals,

Details System of recording and playback of digitally recorded signals, System of recording and playback of digitally recorded signals,

1982-03-30

1984-10-30

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

Recording for changing duration, frequency or redundant...

360 64, G11B 500, G11B 1544

Patent

active

044802722

ABSTRACT:
Four magnetic heads are provided on a rotary mount equally spaced around the circumference, so when they are rotated to scan a tape wound around the headwheel in half a turn of a helix, each oblique track on the tape corresponds to half a revolution of the headwheel. In recording, the incoming signals are subdivided in time demultiplex into segments alternately distributed first to one diametryl pair of heads on the headwheel and then to the other diametryl pair, in each case through a digital time expander that doubles the time required to transmit the signal segment, thus reducing the bit rate by half. The reverse operations are done in playback, with time-expansion before the signal segments are put together into a continuous signal channel stream at the original bit rate. If the time-expansion is by just a little less than the factor of two, and the time-compression likewise, the places on the tape where two heads of the same channel would instantaneously both be in contact with the tape are left clear of signals, and disturbances are avoided, without interfering with the continuity of the playback signal.

REFERENCES:
patent: 3860760 (1975-01-01), Rittenback
patent: 4206476 (1980-06-01), Hashimoro

Affiliated with

Also associated with

Rating

System of recording and playback of digitally recorded signals, does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with System of recording and playback of digitally recorded signals, , we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and System of recording and playback of digitally recorded signals, will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1104469