Radio frequency radiation shield device
AssigneeInternational Business Machines Corporation
InventorIvan J. Reedman
Life of this patent
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Abstract
A radio frequency radiation shield device may comprise a receiver for detecting a near field radio frequency signal at target frequencies. The shield device may further comprise a signal processor that samples signal characteristics of a detected signal and determines a nullifying signal in response to detecting a signal characteristic of the detected signal meeting a trigger threshold. The nullifying signal may comprise a modulated version of the detected signal. The shield device may further comprise a signaler for generating the nullifying signal. The shield device may further comprise a transmitter for transmitting the nullifying signal at target signals.
Claims25
A radio frequency radiation shield device, the device comprising:
- a receiver for detecting a near field radio frequency signal at target frequencies;
- a signal processor for, responsive to detecting a signal characteristic of a detected signal meeting a trigger threshold:
- sampling signal characteristics of the detected signal;
- and
- determining a nullifying signal that results in interference with the detected signal to render the detected signal ineffective, the nullifying signal comprising a modulated version of the detected signal;
- a signaler for generating the nullifying signal;
- and
- a transmitter for transmitting the nullifying signal at the target signals.
A signal processing method for providing a radio frequency radiation shield, the method comprising:
- detecting, by a receiver, a near field radio frequency signal at target frequencies;
- responsive to detecting a signal characteristic of a detected signal meeting a trigger threshold, sampling signal characteristics of the detected signal;
- determining a nullifying signal that results in interference with the detected signal to render the detected signal ineffective, the nullifying signal comprising a modulated version of the detected signal;
- generating the nullifying signal;
- and
- controlling the transmitting of the nullifying signal using a transmitter.
A signal processing system for providing a radio frequency radiation shield, comprising:
- a signal receiver for receiving a detected near field radio frequency signal at target frequencies;
- a signal sampler for, responsive to detecting a signal characteristic of a detected signal meeting the trigger threshold, sampling signal characteristics of the detected signal;
- a signal nullifier for determining a nullifying signal that results in interference with the detected signal to render the detected signal ineffective, the nullifying signal comprising a modulated version of the detected signal;
- and
- a signal controller for controlling the transmitting of the nullifying signal.
A radio frequency radiation shield device, the device comprising:
- a receiver for detecting a near field radio frequency signal at target frequencies;
- a signal processor for, responsive to detecting a signal characteristic of a detected signal meeting a trigger threshold:
- sampling signal characteristics of the detected signal;
- and
- determining a nullifying signal that results in destructive interference with the detected signal to render at least part of the detected signal ineffective;
- a signal generator for generating the nullifying signal;
- and
- a transmitter for transmitting the nullifying signal at the target frequencies.
A signal processing method for providing a radio frequency radiation shield, comprising:
- detecting a near field radio frequency signal at target frequencies;
- responsive to detecting a signal characteristic of a detected signal meeting a trigger threshold, sampling signal characteristics of the detected signal;
- determining a nullifying signal that results in destructive interference with the detected signal to render at least part of the detected signal ineffective;
- generating the nullifying signal;
- and
- controlling the transmitting of the nullifying signal using a transmitter.
Dependencies are inferred from the claim text.