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:
Jul. 04, 1989
Filed:
Dec. 01, 1987
Gunter Weick, Eckental, DE;
Lothar Windolf, Nuremberg, DE;
U. S. Philips Corporation, New York, NY (US);
Abstract
A 001 conference circuit for a digital communication system in which the analog-to-digital and digital-to-analog converters of at least two subscriber terminal stations have different bandwidth of their processable analog signals or in the code format of the digital signals or in the bit rate of the digital signals. It is not necessary for any conference participant to adapt to the equipment of any one of the other participants because the conference circuit comprises transcoders and corresponding transdecoders of different construction for each conference participant. This anoids the requirement that all conference participants must agree on the same bandwidth, the same code and the same bit rate. When establishing a conference connection, a control circuit actuates the appropriate transcoder and the corresponding transdecoder required for each conference participant. Each conference participant receives signals from the other participants during the conference, having the same quality as in the case of a connection between only two participants.