Method and apparatus for generating a noiseless sliding block co

Details Method and apparatus for generating a noiseless sliding block co Method and apparatus for generating a noiseless sliding block co

1981-12-31

1984-07-31

Sloyan, T. J.

Communications: electrical

Audible indication

Percussion-type sound producer

360 40, H03K 1324

Patent

active

044633440

ABSTRACT:
An algorithm and the hardware embodiment for producing a run length limited code useful in magnetic recording channels are described. The system described produces sequences which have a minimum of 2 zeros and a maximum of 7 zeros between adjacent 1's. The code is generated by a sequential scheme that maps 1 bit of unconstrained into 2 bits of constrained data. The encoder is a finite state machine whose internal state description requires 3 bits. It possesses the attractive feature of reset data blocks which reset it to a fixed state. The decoder requires a lookahead of three future channel symbols (6 bits) and its operation is channel state independent. The error propagation due to a random error is 3 bits. The hardware implementation is extremely simple and can operate at very high data speeds.

REFERENCES:
patent: 3689899 (1972-09-01), Franaszek
patent: 4115768 (1978-09-01), Eggenberger et al.
patent: 4146909 (1979-03-01), Beckenhauer et al.

Affiliated with

Also associated with

Rating

Method and apparatus for generating a noiseless sliding block co does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Method and apparatus for generating a noiseless sliding block co, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Method and apparatus for generating a noiseless sliding block co will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-187949