Systems and methods for dampening TDMA interference
AssigneeAT&T Mobility II LLC
InventorsScott Dale Prather, Cameron Kelly Coursey, Herman Chien
Life of this patent
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Abstract
Systems and methods are disclosed which relate to mitigating the detrimental effects of interference to electronic devices from mobile telephones utilizing any form of time-domain multiplexing technology. A wireless transmitter inside the mobile telephone broadcasts a warning transmission which can be received by affected devices. Once the warning transmission is received by an affected device, the device activates a blanking circuit comprising an actuator and a switch or switches. The switches open for the duration of the interference so that the user does not receive undesired output such as: noise through a speaker, noise through a microphone, or other interference with electrical signals.
Claims16
A mobile telephone comprising:
- a radio frequency transmitter configured to transmit a radio frequency transmission burst;
- a protocol stack;
- a short range communication formatter configured to receive, from the protocol stack prior to a transmission of the radio frequency transmission burst, an indication of a transmission of the radio frequency transmission burst;
- and
- a short range communication transmitter associated with the short range communication formatter, the short range communication transmitter configured to broadcast, to a receiver associated with an affected device prior to the transmission of the radio frequency transmission burst, a warning transmission comprising a timing and a duration associated with the transmission of the radio frequency transmission burst for use by the affected device to time blanking of the affected device, wherein blanking of the affected device occurs at a leading edge of the radio frequency transmission burst and a trailing edge of the radio frequency transmission burst based on the timing and the duration associated with the transmission of the radio frequency transmission burst provided by the warning transmission.
An affected device comprising:
- a receiver configured to receive, prior to receiving a radio frequency transmission burst associated with a mobile telephone, a warning transmission from a short range communication transmitter associated with the mobile telephone, the warning transmission comprising a timing and a duration associated with a transmission of the radio frequency transmission burst;
- and
- a circuit configured to blank the affected device based on the timing and the duration associated with the transmission of the radio frequency transmission burst provided by the warning transmission, wherein blanking of the affected device occurs at a leading edge of the radio frequency transmission burst and a trailing edge of the radio frequency transmission burst based on the timing and the duration associated with the transmission of the radio frequency transmission burst provided by the warning transmission.
A method comprising:
- receiving, at an affected device from a mobile telephone, a warning transmission, the warning transmission comprising a timing and a duration associated with a transmission of a radio frequency transmission burst associated with the mobile telephone, the warning transmission received prior to the transmission of the radio frequency transmission burst;
- in response to receiving the warning transmission, utilizing a switch of the affected device to suppress an effect on the affected device of the transmission of the radio frequency transmission burst, wherein utilizing the switch of the affected device to suppress the effect on the affected device occurs at a leading edge of the radio frequency transmission burst and a trailing edge of the radio frequency transmission burst based on the timing and the duration associated with the transmission of the radio frequency transmission burst provided by the warning transmission.
Dependencies are inferred from the claim text.