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:
May. 08, 1990
Filed:
Jun. 16, 1988
Keiichi Obara, Hachioji, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
A multiplex communication system includes a plurality of exchanges and multiplex communication apparatuses connected to at least one exchange through a plurality of lines. Each of the multiplex communication apparatuses comprises first registers for storing first selection number information from the lines and second registers for fetching and storing second selection number information from an associated one of the exchanges, and is arranged such that a CPU of the associated communication apparatus determines that the exchange is to perform its interrupting operation and causes encoders and decoders to be switched to their through mode when the first selection number information stored in the first registers coincides with the second selection number information stored in the second registers.