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:
Aug. 05, 2003
Filed:
Aug. 13, 1999
Yasuo Murakami, Kanagawaken, JP;
Takaaki Toyama, Kanagawaken, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
Provided is a cell exchanging device which realizes switching of an AAL2 connection level using an existing ATM switch, thus preventing deterioration of a transfer quality of other ATM cells. In an input-side ATM line corresponding section, provided are an ATM cell demultiplexing section 113-I-1 for extracting and separating only an AAL2 cell from an ATM cell, an AAL2 DMX 113-I-2 for converting from the AAL2 cell to an AAL2 partial fill cell, and an ATM cell multiplexing section 113-I-4 for multiplexing and packing the ALL2 partial fill cell and the ATM cell other than AAL2. Before entering to the ATM switch, a priority order of each ATM cell is determined based on class information presented in the ATM line corresponding section, and reading-out from the ATM cell multiplexing section is controlled. Similarly, also in an output-side ATM line corresponding section, at the time of a transfer to a transmission path, a priority order of each ATM cell is determined based on class information presented in the input-side ATM line corresponding section and a reading-out is performed.