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:
Dec. 20, 1988
Filed:
Mar. 26, 1987
Harbhajan S Virdee, Phoenix, AZ (US);
Hamid R Rezaie, Glendale, AZ (US);
Siemens Transmission Systems, Inc., Phoenix, AZ (US);
Abstract
In accordance with the present invention a plurality of input control data bits are added to a plurality of input telecommunications transmission channels in the form of an input control word wherein any of the individual data bits can be changed without adversely effecting the ability of the system to synchronize and recover the added control word from the multiplexed data stream at the receiving end. A service channel is thus provided. The synchronization circuit described by the present invention is particularly useful in telecommunications transmission of a large plurality of communication channels as is the case in fiber optic transmission wherein a single control word may be useful, for example, as an alarm with respect to one or more of the multiplex telecommunications channels. In a preferred embodiment of the invention, an 8 Kbit/sec control channel is described.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile