Remote controlled electronic apparatus and remote control method thereof

An electronic apparatus comprising:

• a filter for attenuating a predetermined frequency component of a remote control signal composed of a fixed-width pulse and a succeeding control code;
• and
• a control unit for decoding said remote control signal supplied via a first input terminal and upon deciding that said remote control signal is a power cutoff instruction, demagnetizing a relay to place said electronic apparatus in a reception standby mode and to set said control unit in a low power state, thereby disabling said first input terminal from accepting said remote control signal,
• wherein when said fixed-width pulse included in said remote control signal supplied via said filter has been received at a second input terminal, said control unit is released from said low power state and enables said first input terminal to accept said remote control signal again.

A remote control method for an electronic apparatus, comprising the steps of:

• attenuating using a low-pass filter a high-frequency component of a remote control signal composed of a guide pulse having a pulse width sufficient to be passed by the low-pass filter in said step of attenuating and a succeeding control code;
• deciding that said remote control signal is a valid remote control signal by receiving the guide pulse passed by the low-pass filter and decoding the control code to form a power cutoff instruction to set a control unit in a low power state;
• demagnetizing a relay to place said electronic apparatus in a reception standby mode;
• and
• releasing said control unit from said low power state and halting said step of attenuating upon detection of said guide pulse.

A remote control method for an electronic apparatus, comprising the steps of:

• decoding a supplied remote control signal via a first input terminal, said supplied remote control signal composed of a fixed-width pulse and a succeeding control code and, upon deciding that said decoded control signal is a power cutoff instruction, demagnetizing a relay to place said electronic apparatus in a reception standby mode and to set a control unit in a low power state, and disabling said first input terminal from accepting said remote control signal;
• attenuating a predetermined frequency component of said remote control signal;
• and
• deciding whether said fixed-width pulse included in said attenuated remote control signal is existent and, upon detection of said fixed-width pulse, releasing said control unit from said low power state and enabling said first input terminal to accept said remote control signal again.