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:
Jun. 14, 1994
Filed:
Jan. 11, 1993
Mark A Pashan, Wheaton, IL (US);
AT&T Bell Laboratories, Murray Hill, NJ (US);
Abstract
In an asynchronous transfer mode (ATM) switching arrangement buffer memory capacity is effectively and efficiently increased by employing a plurality of circuit cards including a master circuit card and a plurality of so-called slave circuit cards including additional buffer memory and an internal cell format in which all of the ATM cell routing information is supplied directly to the master circuit card. Then, the master circuit card utilizes the ATM cell routing information to control writing and reading of data to and from its buffer memory locations and the buffer memory locations of each of the plurality of slave circuit cards. This control of the plurality of slave circuit cards requires only unidirectional communications links to pass the control information from the master circuit card to the slave circuit cards.