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:
Sep. 10, 2002
Filed:
Dec. 03, 1998
Akira Ishikura, Kawasaki, JP;
Osamu Kurokawa, Tokyo, JP;
Yoshihiro Nomura, Tokyo, JP;
Masakuni Hyodo, Tokyo, JP;
Ken Nakamura, Yokohama, JP;
Kabushiki Kaisha Toshiba, Kawasaki, JP;
Abstract
This invention provides a dual-mode radio communication apparatus which can make normal communications even when an external apparatus is connected to a radio communication apparatus, the communication scheme of which is set in a digital mode. When the radio communication apparatus is not connected to a vehicle-mount kit via a connector in an analog mode, a switch control means of a controller switches a switching circuit to communicate a signal with a base station using a built-in antenna. When the apparatus is connected to the vehicle-mount kit, the switch control means switches the switching circuit to communicate a signal with the base station using an external antenna via the vehicle-mount kit and a booster unit. In the digital mode, the switch control means switches the switching circuit to communicate a signal with the base station using the built-in antenna independently of the connection with the vehicle-mount kit.