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. 24, 2007
Filed:
Apr. 17, 2003
Emi Ozaki, Yokohama, JP;
Hideki Kuga, Kawasaki, JP;
Tomoya Rokugawa, Yokohama, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A problem of this invention is to satisfy both of securement of visibility of a display unit and suppression of noises at the time of a telephone call etc. using a receiver and a microphone. In a portable terminal apparatus which relates to the invention, a control unit () judges whether a handsfree device () is connected or not, on the occasion that a telephone call operation is carried out by an operation unit () and a voice telephone call operation by a telephone call circuit () and a transmission/receiving unit () is started, and in case that the handsfree device () is not connected, it is judged that a user is making a telephone call by use of a receiver () and a microphone () in an apparatus main body in such a state that he puts an apparatus casing to his ear part, and at least one of a drive system, drive frequency of a display unit () which comprises a liquid crystal display is changed, and a drive operation giving priority over acoustic characteristics is carried out. On one hand, in case that the handsfree device () is connected, a drive operation with high picture quality giving priority over optical characteristics of the display unit () is carried out without changing the drive system etc.