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:
Apr. 26, 1988
Filed:
May. 07, 1986
Jun Matsumoto, Tokyo, JP;
Hiromichi Mori, Kanagawa, JP;
Kokusai Denshin Denwa Co., Ltd., Tokyo, JP;
Abstract
A time division speech path switch for an electronic exchange system has a plurality of speech path memories for each input highway, and an input highway information is stored simultaneously in all of said speech path memories. The number of said input highway memories is equal to number of output highways, and each speech path memory can store at least one frame information of an input highway. A holding memory is provided at each output highway. A switched output signal is read out of one of said speech path memories according to content of the holding memory coupled with the output highway. According to the invention which has a plurality of input speech path memories and a plurality of holding memories, instead of a single speech path memory and a single holding memory of a prior art, an operational speed of a speech path memory and a holding memory may be slow as compared with that of a prior art. And, a large capacity of exchange system may be designed by using a low speed memory device.