Shutter for a camera

A shutter for a camera comprising:

• a set of sectors displaceable in opening and closing directions to open and close a shutter opening;
• a motor connected to effect displacement of the sectors in response to forward and reverse pulses applied to the motor;
• a memory circuit for storing pulse data including forward pulses of at least two different pulse widths and reverse pulses of at least two different pulse widths;
• and a control circuit connected to read pulse data from the memory circuit and apply forward and reverse pulses to the motor to effect opening and closing of the sectors to perform an exposure, the control circuit successively applying to the motor a forward pulse of a longer pulse width to initiate displacement of the sectors in the opening direction, one or more pairs of reverse and forward pulses having a shorter pulse width to decelerate the sectors during continuing displacement of the sectors in the opening direction, and a reverse pulse having a longer pulse width to initiate displacement of the sectors in the closing direction.

A method of operating a shutter for a camera having a set of sectors driven in opening and closing directions by forward and reverse pulses applied to a motor to effect an exposure, the method comprising the steps:

• applying a forward pulse to the motor to initiate opening movement of the sectors in the opening direction;
• applying one or more pairs of reverse and forward pulses to the motor while the sectors continue to undergo opening movement to decelerate the sectors during the opening movement thereof;
• and
• applying a reverse pulse to the motor to initiate closing movement of the sectors in the closing direction.