Image pickup apparatus and control method therefor
AssigneeCanon Kabushiki Kaisha
InventorYuichi Ariga
Life of this patent
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Abstract
An image pickup apparatus capable of generating a strobe emission signal in a proper timing even when an electronic front curtain shutter is used in strobe photographing. The image pickup apparatus includes an image pickup device having pixels arranged in matrix and configured to store charges generated according to a received amount of light. A vertical scanning circuit controls travel of the electronic front curtain shutter such that the image pickup device sequentially receives light on a per line basis, starting from a first scan line. When it is detected that the electronic front curtain shutter reaches a predetermined scan line, a NOR gate outputs a light emission timing signal, whereby light is emitted from a light emission unit such as a strobe.
Claims31
An image pickup apparatus capable of performing still image photographing with light emission of a light emission unit, comprising:
- an image pickup device configured to store charges generated according to a received amount of light;
- a scanning unit configured to perform scanning for sequentially starting charge accumulation in respective image pickup regions of said image pickup device from one end to another end of said image pickup device;
- a detection unit configured to detect that the scanning for a predetermined image pickup region of said image pickup device has been performed by said scanning unit after the scanning by the scanning unit is started;
- and
- a light emission control unit configured, in a case where still image photographing with light emission of the light emission unit is performed, to cause the light emission unit to start light emission in response to the fact that said detection unit detects that the scanning for the predetermined image pickup region has been performed.
A control method for an image pickup apparatus having an image pickup device for storing charges generated according to a received amount of light and capable of performing still image photographing with light emission of a light emission unit, comprising:
- a scanning step of performing scanning for sequentially starting charge accumulation in respective image pickup regions of the image pickup device from one end to another end of the image pickup device;
- a detection step of detecting that the scanning for a predetermined image pickup region of the image pickup device has been performed in said scanning step after the scanning in the scanning step is started;
- and
- a light emission control step of causing the light emission unit to start light emission in response to the fact that it is detected in said detection step that the scanning for the predetermined image pickup region has been performed in a case where still image photographing with light emission of the light emission unit is performed.
An image pickup apparatus capable of performing still image photographing with light emission of a light emission unit, comprising:
- an image pickup device configured to store charges generated according to a received amount of light;
- a scanning unit configured to perform scanning for sequentially starting charge accumulation in respective image pickup regions of said image pickup device from one end to another end of said image pickup device;
- a detection unit configured to detect that the scanning for a predetermined image pickup region of said image pickup device has been performed by said scanning unit;
- and
- a light emission control unit configured, in a case where still image photographing with light emission of the light emission unit is performed, to cause the light emission unit to start light emission in response to the fact that said detection unit detects that the scanning for the predetermined image pickup region has been performed.
A control method for an image pickup apparatus having an image pickup device for storing charges generated according to a received amount of light and capable of performing still image photographing with light emission of a light emission unit, comprising:
- a scanning step of performing scanning for sequentially starting charge accumulation in respective image pickup regions of the image pickup device from one end to another end of the image pickup device;
- a detection step of detecting that the scanning for a predetermined image pickup region of the image pickup device has been performed in said scanning step;
- and
- a light emission control step of causing the light emission unit to start light emission in response to the fact that it is detected in said detection step that the scanning for the predetermined image pickup region has been performed in a case where still image photographing with light emission of the light emission unit is performed.
Dependencies are inferred from the claim text.