Patent ID: 8564649
Filing Date: 2013-10-22
Classification: H03K,H04N

Abstract:
1. A shutter drive unit, comprising: at least one inductor; a first drive path connected to said at least one inductor; a second drive path connected to said at least one inductor; a first shutter including a first drive object capacitive load; a second shutter including a second drive object capacitive load; a first clamping circuit adapted to clamp said first drive object capacitive load either to a power source potential or to a reference potential through said first drive path; a second clamping circuit adapted to clamp said second drive object capacitive load either to the power source potential or to the reference potential through said second drive path; a first switch adapted to switch a connection and a non-connection between said at least one inductor and said first drive object capacitive load, said first switch being disposed in said first drive path between a position, in said first clamping circuit, for potential connection to said first drive path, and said at least one inductor; a second switch adapted to switch a connection and a non-connection between said at least one inductor and said second drive object capacitive load, said second switch being disposed in said second drive path between a position, in said second clamping circuit, for potential connection to said second drive path, and said at least one inductor; and a power collecting portion configured to apply an intermediate voltage between the power source potential and the reference potential to said at least one inductor, and to collect a power.