Signal receiving apparatus and signal transmitting system

A signal transmitting system comprising:

• a signal transmitting apparatus for transmitting a digital input signal;
• and
• a signal receiving apparatus that is connected to the signal transmitting apparatus via a signal transmission line, and that comprises:
• a PLL circuit for generating a clock signal from the digital input signal transmitted via the signal transmission line;
• a DA converter for converting the digital input signal to an analog output signal;
• a memory circuit into which the digital input signal is written according to the clock signal separated and generated by the PLL circuit, and out of which the digital input signal is read according to a reference clock from a reference clock generating circuit;
• a time difference detecting circuit for detecting time difference between the clock and the reference clock;
• and a data processing circuit for processing, when the time difference detecting circuit detects the time difference between the clock signal and the reference clock signal, the digital input signal in accordance with conditions of the time difference detected, and for writing into the memory circuit.