Patent ID: 7999845

Claim:
An electronic endoscope system comprising an electronic endoscope having an imaging device for obtaining an image signal from a site to observe inside a body cavity, and a processor for producing an image of the site to observe based on an electric wave received from said electronic endoscope, wherein said electronic endoscope comprises: a modulator for producing a radio frequency signal through quadrature modulation of a picture signal that is obtained by digitalizing the image signal; a control section manually operated to enter control signals; a data superimposing device for superimposing the entered control signals on the radio frequency signal in horizontal scanning intervals within a vertical blanking interval of the radio frequency signal; and a sender for sending the radio frequency signal as the electric wave to said processor, after the control signals are superimposed on the radio frequency signal; and wherein said processor comprises: a receiver for receiving the radio frequency signal as the electric wave from said electronic endoscope; a demodulator for demodulating the radio frequency signal into the picture signal; a data analyzer for sampling the entered control signals if they are superimposed on the radio frequency signal, and analyzing contents of the entered control signals; and a controller for controlling corresponding components based on results of analysis by said data analyzer.