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. 26, 1980
Filed:
Jun. 05, 1978
Gary D Southard, Marlton, NJ (US);
Siemens Aktiengesellschaft, Berlin & Munich, DE;
Abstract
In a PCM time multiplex switching system total code words are formed from individual PCM words supplied by the conference parties. In the process, intermediately constructed sum code words are stored, up-dated and restored upon the arrival of a new individual PCM word. Each arriving PCM word is also delayed by one pulse frame and subtracted from an intermediate code word to form the total code word which is transmitted to that party from which the delayed code word originates. The intermediate code words are stored in a connection memory which has two sections which receive alternate individual code words and which alternately connect the intermediate code words to an input adder and to an output subtracter for up-dating at the input and code word removal at the output.