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. 22, 1977
Filed:
Sep. 04, 1975
Piero Belforte, Turin, IT;
Giovanni Perucca, Turin, IT;
Abstract
A switching station for a telecommunication system, operating with pulse-code modulation, serves a multiplicity of incoming and outgoing PCM channels each consisting of a succession of 8-bit words cyclically interleaved with the words of 31 other channels in an assigned time slot of a 32-channel frame, 32 such frames being received and transmitted over as many signal paths forming a frame group. There are n incoming frame groups and n outgoing frame groups with synchronized bit phases in all the spatially separated channels thereof. A central processor controls the concurrent storage of all the incoming bits of a given phase in n pairs of 16-section input memories, each memory section consisting of 8 stages for the bits of a respective word from an incoming channel on a receiving signal path. During each time slot all the bits of each stored word are read out in parallel from the corresponding input-memory section into a similar section of an output memory from which they can be serially fed to a transmitting signal path during a period allocated to a selected outgoing channel. Thus, any incoming channel can communicate with any outgoing channel in the course of each frame.