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Video camera with image recording mode switching function

A technology of image recording and mode switching, applied in the field of cameras

Inactive Publication Date: 2003-08-06
PANASONIC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The present invention wishes to solve the conventional problems, and an object of the present invention is to provide a video camera with an image recording mode switching function capable of reliably preventing occurrence of oscillation phenomenon when switching the image recording mode

Method used

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  • Video camera with image recording mode switching function
  • Video camera with image recording mode switching function
  • Video camera with image recording mode switching function

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Embodiment Construction

[0018] Now, embodiments of the present invention will be described below with reference to the drawings. Cameras with image recording mode switching function in figure 1 shown in .

[0019] exist figure 1 Among them, a CCD image pickup element 1 includes a photoelectric conversion section and a charge conversion section, and outputs picked-up image information to be recorded or photographed as an analog signal. On the light-receiving face of the photoelectric conversion portion, for each pixel, color filters are arranged in a prescribed order, and color information is included in an output analog signal. The analog signal processing section 2 applies prescribed analog processing (noise removal, gain control, pre-knee point processing, etc.) to the signal output from the CCD image pickup element 1 . The A / D conversion section 3 converts the analog image pickup signal of the analog signal processing section 2 into a digital signal.

[0020] The digital signal processing se...

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Abstract

The invention provides a camera with an image switching function capable of assuredly recording mode preventing the generation of a hunting upon switching the image recording mode, an image pick-up signal obtained by a CCD image pick-up element 1 is outputted as a color video signal or a black-and-white video signal in accordance with an image recording mode through processes by an analog signal processing part 2 , an A / D converting part 3 , a digital signal processing part 4 and a video output part 5 . A control part 6 controls all the operations of a camera including process determining the image record mode. The image record mode basically determined in accordance a luminance signal. The image record mode is set to a color image record mode under a high luminance and set to a black-and-white image record mode under a low luminance. However, when the image pick-up signal is formed under near infrared radiation even high luminance, the image record mode is set to the black-and-white image record mode. Whether or not the image pick-up signal is formed by the near infrared radiation is decided by analyzing color signals of image pick-up signal.

Description

technical field [0001] The present invention relates to a video camera capable of switching image recording modes. Background technique [0002] As an example of video camera-related technology having an image recording mode switching function, a "black and white / color switching video camera" is disclosed in JP-A-2001-45512. The camera uses a CCD as a solid-state image pickup element. The sensitivity characteristics of the CCD have Figure 6 The characteristic shown in curve a shows. When the video camera is used as a color video camera, since human eyes can perceive wavelengths up to about 650nm and color reproducibility needs to be improved, an infrared radiation cut filter is placed on the front surface of the CCD. The CCD sensitivity characteristic at this time is given by Figure 6 The curve b shown shows. On the other hand, when the camera is used as a monochrome camera, since the improvement of sensitivity and color reproducibility is hardly affected, the infrared ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225H04N9/04
CPCH04N5/332H04N9/045H04N23/60H04N23/11H04N23/84
Inventor 高桑诚
Owner PANASONIC CORP