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:
Feb. 07, 1984
Filed:
Nov. 07, 1978
John H Hardy, The Hague, NL;
Robert E Barrett, Ipswich, GB;
Anthony R Allwood, Woodbridge, GB;
Garth I Riley, Ipswich, GB;
John Hovell, Ipswich, GB;
Donald W Smith, Ipswich, GB;
Arthur R Potter, Saxmundham, GB;
Ian W Lowrie, Ipswich, GB;
Post Office, London, GB;
Abstract
A digital switching device of the stored program type operating under the control of a central control unit has a first stage which multiplexes digital signals from a plurality of line units and separates data signals from signalling information. The data signals are fed to an input time switching stage. The input time switching stage operates under the control of the central control unit to transmit signals from an input port in a particular time slot on a highway to an output time switching stage. The output time switching stage transmits the data signals to the first stage which combines them with signalling information and after demultiplexing transmits them to appropriate ports.