Patent ID: 7496419

Claim:
A modulation output device, comprising: a tuner for receiving an electronic wave of broadcasting to produce an intermediate frequency signal; an analog interface part for inputting an analog sound signal; a modulation part for converting at least one frequency of said intermediate frequency signal and said analog sound signal in order to adjust the frequency of said intermediate frequency signal and the frequency of said analog sound signal to be equal; a digital interface part for inputting first digital sound data; a processor for modulating said first digital sound data inputted by said digital interface part to generate first digital modulated data, when necessary, and outputting either said first digital sound data or said first digital modulated data; A/D converter for performing analog-to-digital conversion to the intermediate frequency signal and analog sound signal which frequencies are adjusted by said modulation part to convert said intermediate frequency signal to digital broadcasting data and to convert said analog sound signal to second digital sound data; D/A converter for converting said first digital sound data and said first digital modulated data outputted from said processor to analog signals and outputting the first analog sound signal converted from said first digital sound data to a speaker embedded in a device or earphone terminal and outputting the first analog modulated signal converted from said first digital modulated data to a transmission part; and said transmission part for transmitting the first analog modulated signal outputted from said D/A converter to the outside through a transmission antenna; wherein said tuner, said analog interface, said modulation part, said A/D converter, said digital interface part, said processor, said D/A converter, and said transmission part are integrated into one chip.