Demodulator of receiver used for communications

A demodulator comprising:

• a reception portion for receiving a communication signal outputted from a modulator;
• a correction parameter output portion connected to said reception portion for outputting a correction parameter based on the communication signal;
• a demodulated information output portion connected to said reception portion and said correction parameter output portion for outputting demodulated information based on the communication signal and the correction parameter;
• a level signal output portion connected to said reception portion for outputting a first signal when a receiving level of said communication signal is higher than a threshold level, and outputs a second signal when a receiving level of said communication signal is lower than a threshold level;
• and
• a storage portion connected to said level signal output portion for storing the correction parameter outputted from said correction parameter when the first signal is inputted, and for outputting a stored correction parameter to said correction parameter output portion when said second signal is inputted.

A demodulator comprising:

• demodulated information generating means for generating demodulated information based on a communication signal;
• detection means, connected to said demodulated information generating means, for detecting whether a predetermined condition is present in at least one of the communication signal and the demodulated information, for outputting a first signal when the predetermined condition is present and for outputting a second signal when the predetermined condition is not present;
• and
• storage means, connected to said detection means, for storing a correction parameter when said detection means outputs the first signal and for outputting the stored correction parameter when said detection means outputs the second signal.