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:
Apr. 03, 2001
Filed:
Apr. 13, 1998
Manabu Matsuo, Kanagawa, JP;
Masaki Hoshino, Kanagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A microcomputer is provided in an earphone-microphone device for the purpose of controlling the transmission/receipt of data with respect to a portable cellular phone by way of a serial data signal line and a serial clock signal line, the operation of a liquid crystal device driver, and the operation of a drive circuit of a vibrator. As a result, an earphone-microphone device itself can perform typical functions of the cellular phone, such as retrieval of phone-number-related data stored in the cellular phone, displaying of the thus-retrieved data, origination of a call to the called party indicated on a display, and actuation of the vibrator when there is an arrival of an incoming call.