Detected signal processing device for rotating sensor and detected signal outputting method therefor

A rotation detecting device, which detects a rotation direction and a rotational speed of a rotor and outputs rotational direction signals having different waveforms according to the rotation direction, said rotational direction signals based on timing corresponding to the detected rotational speed, said detected signal processing device comprising:

• rotational speed determining means for determining whether the rotational speed of the rotor reaches a predetermined rotational speed;
• signal pattern generating means for utilizing the rotational direction signals in combination to generate transfer signal having information different from the rotational direction and rotation speed of the rotor;
• and
• signal processing means for signal processing to output a signal generated by the signal pattern generating means with timing corresponding to the rotational speed when a signal generated by the signal pattern generating means exists, where it is determined by the determining means that the rotational speed of the rotor has reached the predetermined rotaional speed. Wherein the signal processing means outputs any one of the rotational direction signals with timing corresponding to the rotational speed when the signals are not generated by the signal pattern generating means where it is determined by the determining means that the rotational speed of the rotor has reached the predetermined rotational speed.

A rotation detecting outputting method for a rotation detecting sensor, comprising:

• outputting rotational direction signals different in waveform according to a rotational direction of a rotor with timing corresponding to a rotational speed of the rotor thereby output information corresponding to the rotational speed and rotational direction of the rotor;
• and
• utilizing the rotational direction signals different in waveform corresponding to the rotational direction in combination on condition that the rotational speed of the rotor reaches a predetermined rotational speed to thereby generate a transfer signal, the transfer signal being encoded with information different from the rotational direction and the rotational speed of the rotor as a signal pattern;
• and
• outputting the generated transfer signal with timing corresponding to the rotational speed.

A rotation detecting outputting method for a rotation detecting sensor, comprising:

• outputting rotational direction signals different in waveform according to a rotational direction of a rotor with timing corresponding to a rotational speed of the rotor to thereby output information corresponding to the rotational speed and rotational direction of the rotor;
• and
• utilizing the rotational direction signals different in waveform corresponding to the rotational direction in combination on condition that the rotational speed of the rotor reaches a predetermined rotational speed to thereby generate a transfer signal different from the rotational direction and rotational speed of the rotor as a signal pattern;
• and
• outputting the generated one with timing corresponding to the rotational speed.
• Wherein when a transfer signal is not generated where transfer signal can be output, either one of the rotational direction signals is output regardless of the rotational direction of the rotor.