Television receiver being driven by either analog broadcasting signals or digital broadcasting signal

DETAILED DESCRIPTION It is therefore an object of the present invention to provide a television receiver compatible with an analog broadcasting reception and a digital broadcasting reception that is able to effectively eliminate image interference signals disturbing the analog broadcasting reception.
In order to achieve the above object, a television receiver according to one aspect of the present invention includes means for splitting a reception signal to a first signal and a second signal, first and second mixers for receiving the split reception signals from the splitting means to one of their inputs, a local oscillator for outputting first and second local oscillation signals, means for providing the first local oscillation signal to another input of the first mixer through a phase shifter which shifts the phase by 90.
degree.
, first output means for directly extracting outputs from the first and the second mixers, and second output means for outputting a second output based on the sum of a direct output from the first mixer and the output from the second mixer which has passed through another 90.
degree.
phase shifter.
According to the arrangement mentioned above, the mixer effectively eliminates the image IF interference signal when processing of the second IF signal.
Therefore, the present invention is able to reduce signal deterioration caused by image frequency interference signals, which had caused troubles in the conventional CATV broadcasting receivers.
Additional objects and advantages of the present invention will be apparent to persons skilled in the art from a study of the following description and the accompanying drawings, which are hereby incorporated in and constitute a part of this specification.