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:
Jul. 31, 2001
Filed:
Jun. 23, 1998
Taisuke Nakamura, Saitama, JP;
NEC Corporation, Tokyo, JP;
Abstract
A foldable portable telephone set is foldable so as to be conveniently carried, and allows a speech communication when it is open. A light-emitting portion which emits light when an incoming call is received, and a light-detecting portion which detects light from the light-emitting portion. When the telephone set is folded, the light-detecting portion can detect light from the light-emitting portion. When the telephone set is open, the light-detecting portion cannot detect light from the light-emitting portion. This foldable portable telephone set includes an automatic off-hook function. Hence, after light emission of the light-emitting portion is started when an incoming call is received, if light from the light-emitting portion is detected once by the light-detecting portion but is not detected by the light-detecting portion again immediately thereafter, the foldable portable telephone set automatically shifts to a speech communication mode even if speech communication start operation is not performed.