Karaoke device capable of wirelessly transmitting video and audio signals to a television set

A karaoke device capable of wirelessly transmitting video and audio signals to a television set, said karaoke device comprising:

• a song memory unit for storing digital audio data and lyrics data therein;
• a processing unit connected electrically to said song memory unit and operable to retrieve said digital audio data and said lyrics data from said song memory unit;
• an audio synthesizer unit, connected electrically to said processing unit, for receiving said digital audio data and for generating a stereophonic digital audio output corresponding to said digital audio data;
• a digital-to-analog converting unit including a digital-to-analog converter which is connected electrically to said synthesizer unit and which receives and converts said digital audio output into an analog audio signal, and a mixer which is connected electrically to said converter so as to receive said analog audio signal and which is adapted to be connected electrically to an external microphone unit so as to receive an external voice signal therefrom, said mixer mixing said analog audio signal and the external voice signal and generating a mixed audio signal output;
• and
• an audio-visual signal transmitting unit including
• an image memory unit for storing predetermined digital video data and character data therein,
• control means, connected electrically to said processing unit and said image memory unit, for receiving said lyrics data from said processing unit and said digital video data from said image memory unit, said control means being operable to convert said digital video data to an analog video signal and to generate character images based on said character data and corresponding to said lyrics data, said character images being superimposed on said analog video signal,
• a modulator connected electrically to said control means and said converting unit so as to received said video signal from said control means and said audio signal output from said converting unit and so as to generate a modulated video signal and a modulated audio output,
• a frequency doubler connected electrically to said modulator so as to receive said modulated video signal and said modulated audio output, said frequency doubler increasing frequency of said modulated video signal and said modulated audio output to a range which can be accepted by the television set, and
• a transmitting circuit, connected electrically to said frequency doubler, for transmitting wirelessly said video signal and said audio output from said frequency doubler for reception by the television set, wherein said audio synthesizer unit includes a sound synthesizer processor connected electrically to said processing unit, a sound digital signal processor connected electrically to said sound synthesizer processor, and a digital sound effect storage memory connected electrically to said sound digital signal processor, said sound synthesizer processor receiving said digital audio data from said processing unit and processing said digital audio data to obtain digital sound data, said sound digital signal processor processing said digital sound data to generate said digital audio output which is received by said converting unit.