Patent ID: 7760247
Filing Date: 2010-07-20
Classification: H04N

Abstract:
1. An image sensing apparatus comprising: an image sensing element that outputs a charge signal in accordance with a light amount of an object image formed on a light-receiving surface; a light-shielding unit that shields said image sensing element from incident light; a determination unit that determines a compensation amount for compensating a loss in exposure amount for said image sensing element caused by delay in closing of said light-shielding unit; a setting unit that sets an exposure period of said image sensing element; and a control unit that changes the set exposure period based on the compensation amount determined by said determination unit if the exposure period is longer than a predetermined period, and changes a gain to be applied to the charge signal based on the compensation amount determined by said determination unit if the exposure period is equal to or shorter than the predetermined period, wherein, if the set exposure period is longer than the predetermined period and if the compensation amount determined by said determination unit is greater than an upper limit of compensation amount of exposure period, said control unit changes the exposure period based on the upper limit of compensation amount of exposure period and changes the gain so as to compensate the rest of the compensation amount which is not compensated after changing the exposure period.