Image pick-up device
AssigneeCanon Kabushiki Kaisha
InventorsTakao Kinoshita, Akihiko Tojo, Tsutomu Takayama, Toshio Kaji, Nobuyoshi Tanaka
Life of this patent
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Abstract
Disclosed is an image pick-up device which uses a charge transfer type solid state image pick-up device, and further is provided with a shutter so as to form a high quality picture signal in such a manner that the smear is prevented by prohibiting the incidence of the light on the device while the charge is transferred in the device. Further, the device is driven by a clock signal for still photographing in order to obtain a high quality picture information for one frame surely. Further, the photographing parameter is automatically changed over or the monitor is changed over between the motion picture photographing mode and the still photographing mode.
Claims15
An image pick-up device comprising:
- (a) an interline transfer type CCD having a light sensing part and a shaded vertical register, said light sensing par having a photoelectric transducing ability and capable of holding temporarily an electrical image information formed in the light sensing part by transferring it to the vertical register;
- (b) control means for controlling the transfer of electrical image information in the interline transfer type CCD, the control means transferring the electrical information formed in the light sensing part of the interline transfer type CCD to the vertical register;
- and
- (c) light shading means for shading the light sensing part at least during the time for transferring the electrical information in the light sensing part of the interline transfer type CCD to the vertical register.
An image pick-up device comprising:
- (a) image pick-up means for converting an optical image into an electrical information;
- (b) scanning means for periodically scanning the electrical information in the image pick-up means;
- (c) switch means for picking up a still image;
- (d) timer means for starting to count the time with a certain predetermined timing of the scanning period of the scanning means after the start of the switch means, said timer means changing the output state after the lapse of a certain predetermined time after the start of the timer means;
- and
- (e) light shading means for operating in accordance with an output of the timer means, said means allowing light incidence upon the image pick-up device until the output state of the timer means changes and preventing the light incidence upon the image pick-up means when the output state of the timer means changes.
An image pick-up device, comprising:
- (a) image pick-up means for picking up an image pick-up light coming from an object and for photo-electrically converting the image pick-up light into an electric signal;
- (b) shutter means for limiting an incidence of the image pick-up light into said image pick-up means;
- (c) exposure time setting means for setting an exposure time of said image pick-up means;
- (d) periodic signal generating means for generating a periodic signal for reading out said electric signal from said image pick-up means at a predetermined period;
- and
- (f) control means arranged to open said shutter means before the exposure time set by said exposure time setting means by said periodic signal, to close said shutter means in synchronism with said period signal and to read out the electric signal from said image pick-up means in synchronism with the periodic signal.
Dependencies are inferred from the claim text.