Simultaneous radio communication system between two stations

Claim 1

A simultaneous radio communication system between first and second radio stations, each of said first and second radio stations comprising: a. a continuous aural signal source; b. a synchronizing signal generator; c. a time base compressor controlled by a synchronizing signal from said synchronizing signal generator to compress a first continuous aural signal from said continuous aural signal source to provide a time base compressed aural signal; d. a first interrupted control signal generator controlled by the synchronizing signal from said synchronizing signal generator to generate a first interrupted control signal; e. a transmitting circuit controlled by the first interrupted control signal from said first interrupted control signal generator to convert the time base compressed aural signal from said time base compressor into an interrupted radio wave of a predetermined frequency channel; f. a transmitting antenna for transmitting the interrupted wave from said transmitting circuit; g. a receiving antenna for receiving the interrupted radio wave transmitted from said transmitting antenna of the other radio station; h. a second interrupted control signal generator controlled by the synchronizing signal from said synchronizing signal generator to generate a second interrupted control signal; i. a receiving circuit for converting the interrupted radio wave from said receiving antenna into an interrupted aural signal; and j. a time base expander controlled by the synchronizing signal from said synchronizing signal generator to expand the interrupted aural signal from the receiving circuit to provide a second continuous aural signal; in which said synchronizing signal generator of each of said first and second radio stations is adapted to obtain the synchronizing signal from the interrupted aural signal derived from said receiving circuit; the synchronizing signal is composed of pulse waves indicative of the instants when the interrupted aural signal is put in its on-state or/and off-state; the first and second coNtrol signals derived from said first and second control signal generators of each of said first and second radio stations are rectangular waves opposite in phase to each other and the first control signals derived from said first control signal generators of said first and second radio stations are opposite in phase to each other, whereby the interrupted radio waves obtained in said first and second radio stations bear such relationship that the on-state period of one of them corresponds to the offstate period of the other and the interrupted aural signals obtained in said first and second radio stations bear such relationship that the on-state period of the former corresponds to the off-state period of the latter; said time base compressor of each of said first and second radio stations is adapted so that, in the on-state period (or the off-state period) of the first interrupted control signal, the time base compressed aural signal derived from said time base compressor may be obtained as a signal produced by time base compressing all the components of the first continuous aural signal without any dropout and overlapping thereof; and said time base expander of each of said first and second radio stations is adapted so that the second continuous aural signal derived therefrom may have the same content as the first continuous aural signal.