Process and device for regenerating the phase of synchronizing s

Details Process and device for regenerating the phase of synchronizing s Process and device for regenerating the phase of synchronizing s

1983-03-09

1986-01-21

Richardson, Robert L.

Dynamic information storage or retrieval

Control of storage or retrieval operation by a control...

Mechanism control by the control signal

369 48, 369 59, G11B 700

Patent

active

045660913

ABSTRACT:
Process for the regeneration of synchronizing signals used for writing and/or reading recorded digital data or for recording on an optical data carrier, wherein the synchronizing signals are regenerated in phase by determining the phase shift of the center of specific pulses with respect to a clock signal. According to a preferred variant, the specific data and the useful information data are coded by a N.R.Z.-type code, the specific data being associated with pulse durations not used in the N.R.Z. code for recording information data. The specific data can be recorded in time multiplexing with digital information data or, according to a preferred variant, in the form of flags at regularly spaced locations on the tracks which define between them zones intended for the recording of data blocks. The recording of these flags can take place prior to any recording of digital information data in preetched form. The synchronizing signals regenerated on the basis of the reading of these flags can then also be used for writing during the information data recording phases.

REFERENCES:
patent: 3247491 (1966-04-01), Du Vall
patent: 3601537 (1968-07-01), Gueldenpfennig et al.
patent: 3961315 (1976-06-01), Yokoyama et al.
IBM Technical Disclosure Bulletin, vol. 23, No. 7A, Dec. 1980, J. Farran, "Detecting Marks Recorded as Extended One-Half Wavelengths", pp. 2974-2975.

Affiliated with

Also associated with

Rating

Process and device for regenerating the phase of synchronizing s does not yet have a rating. At this time, there are no reviews or comments for this patent.

If you have personal experience with Process and device for regenerating the phase of synchronizing s, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process and device for regenerating the phase of synchronizing s will most certainly appreciate the feedback.

Rate now

Comments { 0 }

Profile ID: LFUS-PAI-O-2301558