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. 17, 1996
Filed:
Sep. 20, 1994
Shigeki Sakurai, Yokohama, JP;
Yoshihiro Tanigawa, Yokohama, JP;
Masatomo Ohuchi, Kawasaki, JP;
Shoji Suzuki, Atsugi, JP;
Katsuhiro Kakizawa, Kawasaki, JP;
Kuniaki Ohtsuka, Yokohama, JP;
Canon Kabushiki Kaisha, Tokyo, JP;
Abstract
A telephone exchange system accommodates a plurality of central office lines and a plurality of telephones and records a telephonic communication in a recording area shared by the plurality of telephones. When predetermined conditions are satisfied, the recording is played back or transferred. The shared recording area can be utilized effectively by erasing a recording after it has been transferred, and by detecting the presence of a voice during a telephonic communication and starting and stopping the recording operation based upon the results of detection. The time at which a recording has been made can be comprehended in the form of a voice when the recording is played back.