Encoding and decoding apparatus and method utilizing hierarchica

Details Encoding and decoding apparatus and method utilizing hierarchica Encoding and decoding apparatus and method utilizing hierarchica

1982-07-16

1985-11-05

Canney, Vincent P.

Dynamic magnetic information storage or retrieval

General processing of a digital signal

In specific code or form

360 48, G11B 509

Patent

active

045517738

ABSTRACT:
A ternary magnetic recording system wherein groups of binary input digits are transformed into corresponding groups of ternary recording code symbols utilizing a hierarchical code substitution system in which the longest valid group in the code is encoded. The code substitution system provides retention of the advantageous properties of a prior ternary recording system while significantly enhancing the automatic gain control utilized in amplitude discrimination between two of the ternary recording symbols. Anomalous detection of chained doublets is also obviated. Data recovery is effected by decoding apparatus utilizing an eight bit addressable ROM addressed with a twelve bit ternary word.

REFERENCES:
patent: 4387364 (1983-06-01), Shirota
patent: 4482927 (1984-11-01), Melbye et al.
"Translator for Run Length Limited Code"--M. Meissler, IBM TDB vol. 17 #5 10/74.

Affiliated with

Also associated with

Rating

Encoding and decoding apparatus and method utilizing hierarchica does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Encoding and decoding apparatus and method utilizing hierarchica, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Encoding and decoding apparatus and method utilizing hierarchica will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-298567