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:
Mar. 29, 1994
Filed:
Dec. 12, 1991
Pierre Boyer, 22300 Lannion, FR;
Yvon Rouaud, F-22300 Lannion, FR;
Michel Servel, F-22300 Lannion, FR;
Other;
Abstract
The invention is a method of controlling asynchronous time-division communications. Cells received from an in-coming time division multiplex system are delivered to an out-going asynchronous time division multiplex system. Each in-coming cell is stored in a buffer memory at an address that corresponds to its re-sending time. At the time when the next cell of a particular communication arrives, the number of previously stored cells for that particular communication, that are stored in the buffer memory, is compared with a maximal number assigned to the particular communication. If the first number exceeds the second number, the next in-coming cell is not re-sent. Besides the buffer memory, the system includes a status memory and an arithmetic and logic unit. The status memory is divided into zones, each zone having two sections. When the next cell is received, a first number of cells stored in the first section of the particular communication which were stored in the buffer memory and which have not yet been sent, is compared with the maximal number stored in the second zone. The arithmetic and logic unit makes the comparison and inhibits the re-sending of the next in-coming cell, if the first number exceeds the maximal number.