Motor control apparatus and method

A method of controlling a motor in a motor control apparatus, which has a motor driver that drives a motor in accordance with an input of digital-format data of a predetermined length, for driving a mechanism using the motor as a power source, said method comprising:

• a storage step of storing the drive data, which has been made to correspond to a plurality of drive patterns, in a memory;
• and
• a driver control step of replacing part of the drive data, which has been read out from the memory by DMA, with other data and outputting the resultant data to the motor driver.

A computer program for implementing, by a computer, a method of controlling a motor in a motor control apparatus, which has a motor driver that drives a motor in accordance with an input of digital-format data of a predetermined length, for driving a mechanism using the motor as a power source, said program comprising program code corresponding to the following steps:

• a storage step of storing the drive data, which has been made to correspond to a plurality of drive patterns, in a memory;
• and
• a driver control step of replacing part of the drive data, which has been read out from the memory by DMA, with other data and outputting the resultant data to the motor driver.

A storage medium storing a computer program for implementing, by computer, a method of controlling a motor in a motor control apparatus, which has a motor driver that drives a motor in accordance with an input of digital-format data of a predetermined length, for driving a mechanism using the motor as a power source, said program comprising program code corresponding to the following steps:

• a storage step of storing the drive data, which has been made to correspond to a plurality of drive patterns, in a memory;
• and
• a driver control step of replacing part of the drive data, which has been read out from the memory by DMA, with other data and outputting the resultant data to the motor driver.

An electronic apparatus that includes a motor control apparatus having a motor driver that drives a mechanism using the motor as a power source and drives the motor in accordance with an input of digital-format drive data of a predetermined length, a memory for storing the drive data, which has been made to correspond to a plurality of drive patterns, and driver control means for replacing part of the drive data, which has been read out from said memory by DMA, with other data and outputting the resultant data to the motor driver, wherein:

• said driver control means generates an interrupt signal after read-out and output of the drive data are executed a predetermined number of times in succession;
• and
• a CPU of said electronic apparatus responds to the interrupt signal by specifying an address from which said driver control means reads out data from said memory and changing the other data.