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:
Nov. 29, 1988
Filed:
Feb. 17, 1987
Applicant:
Inventors:
Assignees:
Hitachi, Ltd., Tokyo, JP;
Nippon Telegraph & Telephone Corp., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04Q / ;
U.S. Cl.
CPC ...
370 68 ;
Abstract
A time slot selecting method applied to a time division switch in a time division switching network having multi-stage tandem connected time division switches. A controller associated with an upstream time division switch selects an outgoing idle time slot for multi-slot information in accordance with a predetermined time slot selecting order in a manner that the number of combinations of time slots selectable by a downstream time division switch becomes large. Thus, the range of selecting time slots by a downstream time division switch becomes broadened while ensuring the sequence integrity of multi-slots in a frame and hence a path blocking rate is reduced.