Circuit arrangement for the recognition of impermissable phase e

Details Circuit arrangement for the recognition of impermissable phase e Circuit arrangement for the recognition of impermissable phase e

1987-07-06

1989-02-07

Safourek, Benedict V.

Pulse or digital communications

Spread spectrum

Direct sequence

331 14, H04L 702

Patent

active

048037044

ABSTRACT:
In a retrieval of data stored on a magnetic medium, a phase locked loop is employed for clocking data signals allocated to the data. This phase locked loop generates clock signals synchronized with the data signals. The data signals are subject to various distortions and are subject to a shift of individual data signals dependent on the recorded data. To prevent the phase locked loop from processing these shifts as phase or frequency errors, a switch stage is provided which inhibits the control in the phase locked loop give the occurrence of such shifts. The switch stage contains a time-delay stage and a comparator. The control is inhibited when successive phase differences between the data signals and the clock signals appear in opposite directions.

REFERENCES:
patent: 4517531 (1985-05-01), Tan et al.
patent: 4563657 (1986-01-01), Qureshi et al.
patent: 4596963 (1986-06-01), Lawton et al.
patent: 4607296 (1986-08-01), Smidth
patent: 4644567 (1987-02-01), Artun et al.
IBM Technical Disclosure Bulletin, vol. 8, No. 12, May, 1966, "Error Feedback Clocking" by W. T. Harnett, pp. 1742-1744.
1298 Telecom. & Radio Engineering, vol. 31/32, No. 8 (1977.08) "A Synchronization System with Digital Control in High-Speed Data Transmission", by A. S. Georgiyev, pp. 22-24.
IBM Technical Disclosure Bulletin, vol. 28, No. 5, Oct. 1985, "Voter Frequency Control Loop for Global Common Clock", pp. 1986 and 1987.

Affiliated with

Also associated with

Rating

Circuit arrangement for the recognition of impermissable phase e 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 arrangement for the recognition of impermissable phase e, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Circuit arrangement for the recognition of impermissable phase e will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-1089667