Image pick-up device having switching over means, image pick-up means, monitor means, recording means, still picture display means and control means

• US 5,760,830 A
• Filed: 06/08/1993
• Issued: 06/02/1998
• Est. Priority Date: 12/29/1981
• Status: Expired due to Term

• Current Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Original Assignee: Canon Kabushiki Kaisha (Canon Inc.)
• Inventors: Takayama, Tsutomu, Tanaka, Nobuyoshi, Kaji, Toshio, Kinoshita, Takao, Tojo, Akihiko
• Primary Examiner(s): Faile, Andrew
• Assistant Examiner(s): Ho, Tuan V.
• Application Number:
  US08/073,648
• Time in Patent Office: 1,820 Days
• Field of Search: 358/213.26, 358/213.27, 358/209, 358/909, 358/906, 358/335, 358/310
• US Class Current: 348/220.1
• CPC Class Codes: G03F 9/7088 Alignment mark detection, e.g. TTR, TTL, off-axis detection, array detector, video detection
• CPC Class Codes: H04N 1/0044 for image preview or review, e.g. to help the user position a sheet
• CPC Class Codes: H04N 1/2112 using still video cameras
• CPC Class Codes: H04N 1/212 Motion video recording combined with still video recording television signal recording H04N5/76
• CPC Class Codes: H04N 2101/00 Still video cameras
• CPC Class Codes: H04N 25/00 Circuitry of solid-state image sensors [SSIS]; Control thereof
• CPC Class Codes: H04N 5/772 the recording apparatus and the television camera being placed in the same enclosure

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.

Claims

1. An image pick-up device, comprising:

(a) switching over means for switching over a moving picture photographing mode and a still picture photographing mode;

(b) image pick-up means for repetitively converting an object image into an image signal during a continuous photographing mode selected by said switching over means and for converting said signal into a still picture image signal in response to selection of a still picture recording mode;

(c) monitor means for visually displaying in continuous manner the image signal which is repetitively converted by said image pick-up means in said continuous photographing mode;

(d) recording means for recording a still picture of the image signal of the image pick-up means in response to switching over of said switching over means from the continuous photographing mode to the still picture recording mode;

(e) still picture display means for temporarily storing the image signal repetitively converted by said image pick-up means in said continuous photographing mode and periodically renewing the image signal and for stopping the renewal in response to selection of said still picture recording mode and repetitively outputting said temporarily stored image signal, thereby displaying the still picture on said monitor; and

(f) control means for holding the still picture displayed on said monitor by said still picture display means at least until the recording of said still picture has been completed.

2. The image pick-up device of claim 1, further comprising:

(g) said image pick-up means operable for picking up an optical image;

(h) moving picture exposure control means for periodically scanning said image pick-up means during the moving picture photographing mode is selected by said switching over means and for continuously controlling the exposure of the image pick-up means for each of a plurality of optical images in automatic manner by using an output of said image pick-up means, and

(i) still picture exposure control means for holding the output of the image pick-up means formed in said moving picture photographing mode in response to switching over of said switching over means from the moving picture photographing mode to the still picture photographing mode and for effecting the exposure control for the still picture photographing mode by using the held output of the image pick-up means as a light measuring information.

3. A device according to claim 2, wherein said still picture exposure control means includes a shutter.

4. The image pick-up means of claim 1, further comprising:

(g) said image pick-up means operable for picking up an optical image;

(h) moving picture exposure control means for periodically scanning said image pick-up means during the moving picture photographing mode is selected by said switching over means and for continuously controlling the exposure of the image pick-up means for each of a plurality of optical images in automatic manner by using an output of said image pick-up means;

(i) parameter setting means for setting a presettable exposure paramater for the still picture photographine mode;

(j) computing means for holding the output of the image pick-up means formed in said moving picture photographing mode in response to switching over of said switching over means from the moving picture photographing mode to the still picture photographing mode and for computing the held output of the image pick-up means and the exposure parameter preset by said parameter setting means to form an exposure control signal for the still picture photographing mode; and

(k) still picture exposure control means for effecting an exposure control for the still picture photographing mode, by using said exposure control signal formed by said computing means.

5. A device according to claim 4, wherein said still picture exposure control means includes a shutter.

6. A device according to claim 1, wherein said control means is arranged to automatically restore said continuous visual display from said still picture display by restoring said continuous photographing mode from the still picture recording mode.