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:
Oct. 04, 1994
Filed:
May. 29, 1992
Hiroshi Kuwahara, Kodaira, JP;
Kazuhiro Suzuki, Koganei, JP;
Toshikazu Sasa, Sendai, JP;
Kenzo Urabe, Sendai, JP;
Arata Nakagoshi, Kokubunji, JP;
Hideya Suzuki, Kokubunji, JP;
Yohichi Ogawa, Hayama, JP;
Tsuneo Furuya, Yokohama, JP;
Yoshinobu Yamamoto, Fujisawa, JP;
Kokusai Electric Co., Ltd., Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
An intermittenceless switching system includes two speech path memories having sufficient capacity to store a single frame of data having a plurality of time slots. The incoming data is stored in one memory, while the outgoing data is read from the other memory. A control circuit continuously alternates the read/write functions between the two memories. A control memory is used to store switch control information. The system includes a buffer memory that is present between a data processor and the control memory to prevent switch operation during data transmission. The system also includes a monitoring circuit for detecting an indication bit signifying the presence or absence of data in the time slot.