Circuit for rewriting blocks of phase encoded data

Details Circuit for rewriting blocks of phase encoded data Circuit for rewriting blocks of phase encoded data

1975-12-10

1976-11-23

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

360 50, G11B 509

Patent

active

039940144

ABSTRACT:
A system wherein a magnetic tape is divided into a plurality of data storage blocks, each of which is preceded by a unique block marker. A phase encoder and phase decoder associated with the read/write head are connected by a data control circuit to a computer. As the head scans the block marker, the phase decoder supplies the computer with the block marker data via the data control circuit. Immediately after a predetermined block marker has been read, the computer provides the data control circuit with a write-signal and makes available a byte of parallel data to be written on the tape. The data control circuit includes an erase latch activated by the ongoing transition of the write-signal for providing the phase encoder with an erase-signal which causes the first byte on the magnetic tape following the block marker to be an erased gap. Thus, during the read mode, the phase decoder will encounter this byte of erased tape after the block marker has been read to permit the phase decoder to become synchronized with respect to the stored data.

REFERENCES:
patent: 3710358 (1973-01-01), Gindi
patent: R28265 (1974-12-01), Irwin

Affiliated with

Also associated with

Rating

Circuit for rewriting blocks of phase encoded data does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Circuit for rewriting blocks of phase encoded data, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit for rewriting blocks of phase encoded data will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-235163