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:
Mar. 05, 2002
Filed:
Dec. 01, 1998
Toshio Honda, Saitama, JP;
NEC Corporation, Tokyo, JP;
Abstract
When failure occurred to a part of the portable cellular phone base station, the part sends a failure information signal to a control section in order to inform the control section of the occurrence of the failure. The control section judges whether or not the portable cellular phone base station has lost its functions. If it is judged that the portable cellular phone base station has lost its functions, the control section sends a power supply interruption signal to a power supply of the portable cellular phone base station. When the power supply received the power supply interruption signal, relay circuits of the power supply are opened, and power supply from the power supply and a backup battery circuit to other parts of the portable cellular phone base station is interrupted, thereby wasteful power consumption (battery consumption) by the portable cellular phone base station after losing functions can be eliminated. The interruption of power supply can also be executed by sending a power supply interruption instruction signal from higher level equipment to the portable cellular phone base station, therefore, wasteful power consumption can easily be stopped without sending maintenance staffs to the place where the portable cellular phone base station has been installed.