Spectra Research, Inc.

Other

Eugene E Mayle, Jr

John William Sellers, Jr

Gary A Thiele

Paul Donald Zidek

Ronald George Riechers

An information storage disc, a method of disc manufacture, and a scheme for improved disc surveillance are provided. Generally, the present invention utilizes the geometry and conductivity of a disc's information storage medium to establish an electrically resonant circuit in the disc body. The electrically resonant circuit may be used to detect, locate, and/or monitor the disc. In accordance with 37 CFR 1.72(b), the purpose of this abstract is to enable the United States Patent and Trademark Office and the public generally to determine quickly from a cursory inspection the nature and gist of the technical disclosure. The abstract will not be used for interpreting the scope of the claims.

Secure storage disc and disc surveillance system

The RF tag system of the present invention minimizes the effect of the RF tag on the overall radar cross section (RCS) of the object with which it is associated, tailors the signal reflected from the tag to match the actual RCS of the object with which it is associated, utilizes an RF tag design that reduces degenerative RF coupling at the tag, and is designed to exploit the operational features of conventional pulse Doppler radars. In accordance with one embodiment of the present invention, a radio frequency tag system is provided including an interrogator and a tag. The tag is secured to an object. The interrogator is configured to generate a transmitted electromagnetic interrogation signal at a predetermined interrogation frequency. The tag comprises an antenna array including a plurality of receiver antennas and a plurality of transmitter antennas. The tag is positioned to receive the interrogation signal at the receiver antennas and is operative to return a reflected signal to the interrogator via the transmitter antennas in response to receipt of the interrogation signal. The tag is configured to generate the reflected signal by (i) suppressing reflection of the interrogation signal, and (ii) generating reflected radiation characterized by a frequency spectrum including a plurality of return bands, each of the return bands being characterized by a predetermined return band frequency. The interrogator is configured to detect radiation reflected at the return band frequencies, discriminate between return bands of different frequencies, and identify a binary code defined by the reflected radiation across the plurality of return bands.

Radio frequency tag system

An optical transceiver worn on the person acts as a matchmaker by continually transmitting and responding to a predetermined frequency band selected by the wearer and corresponding to a major compatibility trait. Response occurs simultaneously between atuned transceivers in the form of pulsing light emitting diodes (L.E.D.'s). The pulse rate and brightness of the L.E.D.'s are visual indications of the degree of atunement between the transceivers. Through the use of subminiature low-power devices, the apparatus including lithium power cell can be worn as jewelry. By transmitting in the infrared region of the electromagnetic spectrum, the apparatus remains inconspicuous.

Growing community of inventors

Dayton, OH, United States of America

Eugene E Mayle, Jr