Patent ID: 6188447
Filing Date: 2001-02-13
Classification: H04B,H04N

Abstract:
A frequency diversity system for RF and television signal reception from an antenna in the meter or decimeter wavelength range for use with a mobile television having a main receiver connected to the antenna for showing via its monitor, the selected program comprising:a second receiver connected to the antenna and adapted to detect different signal frequencies of the selected program, said second receiver having means for identifying the selected program from frequencies of other programs;a control circuit coupled to said main receiver and said second receiver for comparing the signal reception quality of said receivers and generating a control pulse in response to the signal quality;switch means having its input coupled to said receivers and its output coupled to the television monitor, and having its trigger circuit coupled to said control circuit for switching the monitor between said main and said second receiver in response to said control pulse;wherein said control circuit has preset operating thresholds for a selected quality reception and said control circuit processes local position co-ordinates of the television so that the frequencies analyzed are only those expected within the reception coverage area of the television in order to prevent the main receiver from switching between frequencies of approximately equal quality.