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:
Jan. 25, 1983
Filed:
Sep. 15, 1980
Applicant:
Inventors:
Assignee:
Fujitsu Limited, Kawasaki, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
H04J / ; H04Q / ;
U.S. Cl.
CPC ...
370 58 ;
Abstract
A time division electronic switching system including, as main structural elements, a central processing unit, a multi-frequency signal receiver unit, a signal processor and a time division switch including a speech path memory. Dial information from a subscriber or from another telephone office is detected in the multi-frequency signal receiver unit, the output of the multi-frequency signal receiver unit is written into the speech path memory, and an access circuit reads out the information written in the speech path memory and supplies it to the signal processor as read out information.