Control device for a stepping motor included in an electronic apparatus

An electronic apparatus including a movable portion, comprising:

• a stepping motor for driving the movable portion;
• and
• a control device for controlling drive of said stepping motor;
• said control device comprising:
• motor drive means for driving the stepping motor;
• store means for storing control data for acceleration, constant-speed drive and deceleration of the stepping motor;
• and
• motor control means for controlling the stepping motor via said motor drive means with said control data loaded without the intermediary of a microprocessor;
• said motor control means comprising:
• first constant-speed rotation control means for repeatedly loading the control data assigned to the constant-speed drive a preselected number of times to thereby rotate the stepping motor at a constant speed;
• and
• second constant-speed rotation control means for repeatedly loading said control data assigned to the constant-speed drive until a constant-speed rotation end signal arrives to thereby rotate the stepping motor at the constant speed;
• and
• constant-speed control selecting means for selecting one of said first and second constant-speed rotation control means at a time.