Electronic appliance
A technology of electronic equipment and input terminals, which is applied in televisions, electrical components, color TVs, etc., and can solve problems such as the inability to distinguish digital audio signals and the inability to reproduce high-quality digital audio signals
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[0020] Embodiments of the present invention will be described below with reference to the drawings. Fig. 1 is a block diagram illustrating an example of the structure of a main amplifying device of an audio-visual (AV) device applied to an electronic device according to a first embodiment of the present invention. In FIG. 1, the audio signal system is mainly shown, and the video signal system is omitted.
[0021] In Fig. 1, for example, a digital signal input terminal 1 for a signal modulated by an RF signal, an input (OPTICAL1, 2) terminal 2, 3 for an optical signal, and an input (COAXIAL 1) for a signal from a coaxial cable are provided. ) Terminal 4, etc. are used as input terminals for digital audio signals.
[0022] The signal from the input terminal 1 is called up by the RF demodulator 5 corresponding to the digital signal from the terminal 1, and is supplied to the selected switch circuit 6 simultaneously with the signals from the input terminals 2 and 3. Optical tran...
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