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Applications-for-radio-frequency-identification-systems

Frequency hopping system for intermittent transmission

Referring to FIG. 4, the frequency hopping system includes a radio receiver 401 and a plurality of ...

Automated home control using existing electrical lines as a communications medium

The invention includes a home automation system that utilizes a combination of high-bandwidth and ...

United home security system

Accordingly, it is an object of the present invention to provide a united home security system, ...

Anti-theft device using code type transponder

It is therefore an object of the present invention to provide a method and a device with which it ...

Security system for a building complex having multiple units

FIG. 1 is a functional block diagram of a security system 10 for use in a building complex having ...

Reduced power supervisory message transmission in a wireless alarm system

OF THE PREFERRED EMBODIMENT FIG. 1 illustrates a block diagram of an alarm system 10, which ...

Inexpensive modulated backscatter reflector

The present invention claims an inexpensive modulator for an RFID system for short range ...

Remote indication device for use in wireless security systems

In accordance with the present invention a method provides status to a user in wireless ...

High power control signal transmission and low power data signal transmission in a wireless security system

In accordance with the present invention, a method for maximizing transmission power levels in ...

Communications systems and methods

In accordance with the present invention, processors in electrical devices which are a part of a ...

Applications for radio frequency identification systems

Details

Inventors: Garber, Sharon R.; Gonzalez, Bernard A.; Grunes, Mitchell B.; Jackson, Richard H.; Karel, Gerald L.; Kruse, John M.; Lindahl, Richard W.; Nash, James E.; Piotrowski, Chester; Yorkovich, John D.;
Assignee: 3M Innovative Properties Company (St. Paul, MN)
Primary Examiner: Mullen; Thomas
Assistant Examiner:
Attorney, Agent or Firm: Buss; Melissa E.

The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices. The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element. The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.

DETAILED DESCRIPTION The present invention relates to RFID devices, including handheld RFID devices, and applications for such devices.
The devices and applications may be used in connection with items that are associated with an RFID tag, and optionally a magnetic security element.
The devices and applications are described with particular reference to library materials such as books, periodicals, and magnetic and optical media.
Other applications for the present invention are also envisioned.

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