Direct current motor controlling apparatus and method thereof

A method of controlling a direct current motor, the method comprising:

• applying a driving voltage to the direct current motor which has a gap among a plurality of commutators;
• detecting a gap signal corresponding to the gap from the direct current motor;
• analyzing the gap signal detected by a controlling unit;
• and the analyzing including determining that the direct current motor performs a brake if a period during which the gap signal is in a high state becomes larger;
• and
• controlling the direct current motor to be driven according to the result of analysis,
• wherein, if the gap signal continues comprises determining that the direct current motor is stopped and interrupting the driving voltage supplied to the direct current motor.

An optical disk drive motor apparatus comprising:

• a direct current motor having a gap among a plurality of commutators;
• and
• a controlling unit to apply a driving voltage to the direct current motor and detect a gap signal corresponding to the gap from the direct current motor and to control the direct current motor, the controlling unit determining that the direct current motor performs a brake if a period during which the gap signal is in a high state becomes larger,
• wherein, if the gap signal continues to be in a low state for a predetermined time and then returns to a high state, the controlling unit determines that the direct current motor is stopped and interrupts the driving voltage supplied to the direct current motor.

An optical disk drive apparatus comprising:

• a disk loading unit to receive a disk;
• a disk read and/or write unit to read from or write to the disk;
• an optical disk drive motor apparatus comprising:
• a direct current motor to turn the disk, the direct current motor having a gap among a plurality of commutators, and
• a controlling unit to apply a driving voltage to the direct current motor and detect a gap signal corresponding to the gap from the direct current motor and to control the direct current motor;
• the controlling unit determining that the direct current motor performs a brake if a period during which the gap signal is in a high state becomes larger;
• and
• an input and/or output unit to communicate data read from or written to the disk by the disk read and/or write unit,
• wherein, if the gap signal continues to be in a low state for a predetermined time and then returns to a high state, the controlling unit determines that the direct current motor is stopped and interrupts the driving voltage supplied to the current motor.

A method of controlling an optical disk drive apparatus, the method comprising:

• applying a driving voltage to a direct current motor which has a gap among a plurality of commutators;
• detecting a gap signal corresponding to the gap from the direct current motor;
• controlling the direct current motor to be driven according to the result of analysis result;
• and
• determining that the direct current motor performs a braking operation if a period during which the gap signal is in a high state becomes larger.
• determining that the direct current motor is stopped and interrupting the driving voltage supplied to the direct current motor, when the gap signal continues to be in a low state for a predetermined time and then returns to a high state.

A method of controlling an optical disk drive apparatus, the method comprising:

• receiving a disk;
• turning the disk by a direct current motor having a gap among a plurality of commutators;
• applying a driving voltage to the direct current motor and detecting a gap signal corresponding to the gap from the direct current motor;
• controlling the direct current motor;
• and determining that the direct current motor performs a braking operation if a period during which the gap signal is in a high state becomes larger;
• and
• reading from or writing to the disk.
• wherein, if the gap signal continues to be in a low state for a predetermined time and the returns to a high state, the controlling comprises determining that the direct current motor is stopped and interrupting the driving voltage supplied to the direct current motor.