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:
Dec. 26, 1989
Filed:
Nov. 14, 1988
Hideyuki Hirata, Tokyo, JP;
NEC Corporation, , JP;
Abstract
The disclosed data switching apparatus comprises an input control unit which separates a header from communication data contained in logical channel data, as associative memory which compares the header with incoming logical channel numbers previously registered and which outputs an address control signal associated with an address where any of the incoming logical channel numbers coincident with the header are stored, a temporary storage circuit for outputting, based on the address control circuit, an outgoing logical channel number previously registered and associated with the coincident incoming logical channel number, a communication data buffer for temporarily storing the communication data, and an ouput control unit for combining the outgoing logical channel number from the temporary circuit and the communication data from the communication data buffer and delivering the combination to the outgoing communication channel.