White balance adjusting device for a camera

Inactive Publication Date: 2006-11-28
FUJIFILM HLDG CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Benefits of technology

[0016]The present invention aims at eliminating the draw

Problems solved by technology

This slow response results because the color temperatures in the natural world vary in a wide range of time but the variations thereof are normally slow.
In the single photographic mode, as discussed above, the white balance adjustment must be made in compliance with the color temperature of the field in the instant of the shutter release, but this canno

Method used

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  • White balance adjusting device for a camera
  • White balance adjusting device for a camera
  • White balance adjusting device for a camera

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Experimental program
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Embodiment Construction

[0032]A detailed description will hereunder be given for the preferred embodiments of a white balance adjusting device according to the present invention with reference to the accompanying drawings.

[0033]Referring first to FIG. 1, there is shown a block diagram of the structure of an embodiment of a white balance adjusting device for use in an electronic still camera according to the invention. In FIG. 1, the white balance adjusting device is mainly composed of an image pickup part 10, amplifiers 22R, 22G and 22B which respectively amplify the separation color signals 20R, 20G and 20B of three primary colors output from the image pickup part 10, an output part 12, a control part 16, a synchronization signal generation part 30, a mode select switch 32 for selecting either a single photographic mode or a sequential photographic mode, a color temperature detection part 34, and an A / D converter 56, and a mode setting switch 60 for setting a photographic mode.

[0034]The image pickup part ...

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PUM

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Abstract

A white balance adjusting device for use in a camera which photographs a field and forms a video signal representing the field. In the white balance adjusting device, while a sequential photographing is under way, updating of the color temperature data to be used for adjusting a white balance is prohibited. Therefore, the hues of main objects in the respective frames of still images photographed by the sequential photographic operation remain unchanged, thereby maintaining the homogeneity of the main objects. Also, in the white balance adjusting device, control a device is used to provide a short response time for a quick response property in a still mode and to provide a longer response time in a movie mode when compared with the still mode. As a result, the white balance can be adjusted according to the photographic modes of the camera.

Description

[0001]This application is a continuation of application Ser. No. 236,992, filed on Aug. 26, 1988.BACKGROUND OF THE INVENTION[0002]1. Field of the Invention[0003]The present invention relates to a white balance adjusting device for use in a camera in which the image of a field to be photographed is picked up and then a video signal representing the field is created.[0004]2. Description of the Related Art[0005]Recently, there has been developed an attractive electronic still camera system wherein an image pickup device, such as a solid image pickup element, an image pickup tube or the like, is combined with a recording device employing, as a recording medium, an inexpensive magnetic disc having a comparatively higher memory capacity for photographing an object electronically recording the object into the rotating magnetic disc and reproducing an image by a television system or a printer separately provided.[0006]In the above-mentioned electronic still cameras, there is included an ele...

Claims

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Application Information

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IPC IPC(8): H04N9/73H04N5/225F02B75/02
CPCF02B2075/025H04N23/88
Inventor KANEKO, KIYOTAKAMIYAKE, IZUMIODA, KAZUYANAKANE, YOSHIOSHIMAYA, HIROSHI
Owner FUJIFILM HLDG CORP
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