Patent ID: 6909879
Filing Date: 2005-06-21
Classification: H04H,H04N,H04W

Abstract:
1. A radio-frequency transmitting apparatus that can operate concurrently with a television broadcast, comprising: detector circuitry configured to generate at least one control signal based on a current video signal of the television broadcast to indicate a transmitting timing interval for radio-frequency signal transmission in relation to current timing of the video signal; an exciter configured to generate a radio-frequency signal separate from the video signal, said radio-frequency signal and television broadcast having sufficient spectral proximity to potentially cause interference; an antenna coupled with the exciter and configured to receive the radio-frequency signal and to transmit the radio-frequency signal; and a controller coupled to the control circuitry and coupled to the exciter, said controller configured, in a first operating mode, to enable forwarding of the generated radio-frequency signal to the antenna and, in a second operating mode, to prevent any generated radio-frequency signal from being transmitted by the antenna, wherein the operating mode of the controller is selectable based on the at least one control signal to activate the first operating mode during the transmitting timing interval.