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. 19, 2000
Filed:
May. 21, 1998
Masahiko Tanaka, Tokyo, JP;
Kenji Okita, Tokyo, JP;
NEC Corporation, Tokyo, JP;
Abstract
Disclosed is a transmission restricting system which has a transmission interruption controlling means for generating and radiating a magnetic field pattern including a command code to command the transmission interruption to a radio communication terminal equipment in a radio-wave transmission-prohibited area, the transmission interruption controlling means being disposed at the entrance or exit of the radio-wave transmission-prohibited area; a transmission interruption releasing means for generating and radiating a magnetic field pattern including a command code to command the releasing of transmission interruption to the radio communication terminal equipment in the radio-wave transmission-prohibited area, the transmission interruption releasing means being disposed at the entrance or exit of the radio-wave transmission-prohibited area; and a radio communication terminal equipment comprising means for detecting a magnetic field pattern including a command code to command the transmission interruption or the releasing of transmission interruption, and means for controlling the process of the transmission interruption or the releasing of transmission interruption according to the result of the detection of the detecting means.