The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 16, 1989
Filed:
May. 26, 1988
Denis Pinson, Thoiry, FR;
Bull S.A., Paris, FR;
Abstract
A mode of writing synchronization information on a magnetic recording carrier (DISC) where the information is written in binary code and distributed over a plurality N of tracks, each track being associated with at least one reference zone (ZRP.sub.ij) which includes a group of preamble information (ZSY.sub.ij +ZSA.sub.ij), a group of absolute address information (ZAD.sub.ij), and a group of fine-position information (GDP.sub.ij). According to the invention, the mode of writing is characterized in that the preamble information group includes a first subgroup (ZSY.sub.ij) of synchronizing information preceding a second subgroup of automatic gain control (ZCA.sub.ij). The invention is applicable to magnetooptical memories.