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. 16, 1999
Filed:
May. 01, 1996
Eliezer Arie Sheffer, San Diego, CA (US);
Other;
Abstract
The present invention provides an independent supervised communications network which interfaces with an existing cellular telecommunications network by utilizing locally unused cellular frequencies to report information from a premise to a central monitoring facility. This invention utilizes an input device associated with the premise for providing one or more status messages to a transceiver module. The transceiver module may be a modified cellular telephone which is operable in one of three modes; supervision, event and wait. The cellular phone modifications are primarily software changes which provide a logic routine for scanning and selecting an available forward control channel based on a comparison of preselected criteria with measured characteristics and determining a reverse control channel corresponding to the selected forward control channel. The transceiver module transmits the message to the message processor over a predetermined duration, either periodically if the message is a supervision message or continuously if the message is an event message. The message processor, placed at a site proximate to a predetermined cellular site, receives and decodes the messages transmitted from the transceiver module and transmits the messages to a central monitoring facility.