Signal transmission system, signal processing device, reference signal transmitting device, reference signal receiving device, electronic device, and signal transmission method

A signal transmission comprising:

• a fiat signal processing section configured to perform processing on basis of a reference signal;
• a high-frequency reference signal generating section configured to generate and transmit a high-frequency reference signal having a higher frequency than said reference signal such that the high-frequency reference signal is synchronized with said reference signal:
• a low-frequency reference signal generating section configured to receive said high-frequency reference signal from said high-frequency reference signal generating section, and generate a low-frequency reference signal having a lower frequency than said high-frequency reference signal such that the low-frequency reference signal is synchronized with the received high-frenquency reference signal;
• a second signal processing section configured to perform signal processing on a basis of said low-frequency reference signal generated by said low-frequency reference signal generating section;
• and
• a functional part for transmitting said high-frequency reference signal by radio,
• wherein said first signal processing section performs modulation processing on a basis of said reference signal, and
• said second signal processing section performs demodulation processing on a modulated signal processed by said first signal processing section on a basis of said high-frequency reference signal generated by said high-frequency reference signal generating section.

A signal processing device comprising:

• a first signal processing section configured to perform signal processing on a basis of a reference signal;
• a high-frequency reference signal generating section configured to generate and transmit a high-frequency reference signal having a higher frequency than said reference signal such that the high-frequency reference signal is synchronized with said reference signal;
• a low-frequency reference signal generating section configured to receive said high-frequency reference signal from said high-frequency reference signal generating section, and generate a low-frequency reference signal having a lower frequency than said high-frequency reference signal such that the low-frequency reference signal is synchronized with the received high-frequency reference signal;
• and
• a second signal processing section configured to perform signal processing on a basis of said low-frequency reference signal generated by said low-frequency reference signal generating section,
• wherein a processed signal processed by the first signal processing section is output together with said high-frequency reference signal, and
• said second processing section performs the signal processing on the processed signal processed by said first signal processing section.

An electronic device comprising:

• a first signal processing section configured to perform signal processing on a basis of a reference signal;
• a high-frequency reference signal generating section configured to generate and transmit a high-frequency reference signal having a higher frequency than said reference signal such that the high-frequency reference signal is synchronized with said reference signal;
• a low-frequency reference signal generating section configured to receive said high-frequency reference signal from said high-frequency reference signal generating section, and generate a low-frequency reference signal having a lower frequency than said high-frequency reference signal such that the low-frequency reference signal is synchronized with the received high-frequency reference signal;
• and
• a second signal processing section configured to perform signal processing on a basis of said low-frequency reference signal generated by said low-frequency reference signal generating section,
• wherein a processed signal processed by the first signal processing section is output together with said high-frequency reference signal, and
• said second signal processing section perform the signal processing on the processed signal processed by said first signal processing section.

A signal transmission method comprising:

• performing, by a first signal processing section, a first signal processing on a basis of a reference signal to produce a first signal;
• generating and transmitting a high-frequency reference signal having a higher frequency than said reference signal such that the high-frequency reference signal is synchronized with said reference signal;
• receiving said high-frequency reference signal from said high-frequency reference signal generating section, and generating a low-frequency reference signal having a lower frequency than said high-frequency reference signal such that the low-frequency reference signal is synchronized with the received high-frequency reference signal;
• outputting the first signal together with said high-frequency reference signal;
• and
• performing, by a second signal processing section, a second signal processing on a basis of said low-frequency reference signal, the second signal processing being performed on the first signal.