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.

Date of Patent:
Aug. 29, 2000

Filed:

Oct. 14, 1997
Applicant:
Inventors:

Andreas Stiegler, Ettlingen, DE;

Patrick Heck, Durmersheim, DE;

Herbert Hetzel, Schwaigen, DE;

Assignees:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04B / ;
U.S. Cl.
CPC ...
455343 ; 455 383 ; 455574 ;
Abstract

A method for entering and leaving a power-saving operation of a subscriber in an annular communication network includes transmitting data in the communication network in a format that prescribes a pulsed sequence of individual bit groups of identical length in which specific bit positions are reserved for a preamble which is decoded in a receive circuit of each subscriber. During a power-saving operation of a subscriber, at least part of the subscriber which contains the receive circuit remains turned on, and at least one special preamble code is provided, upon the reception of which a part of the subscriber turned off during the power-saving operation is turned on again.


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