Video camera with manual color balance adjusting option
First Claim
1. A color camera apparatus which comprises a camera lens system, an image sensor for converting optical information of an object obtained through the camera lens system into a color picture signal, and a viewfinder for displaying a color picture of the object in a response to the color picture signal, said apparatus further comprising:
- an attachment which is provided with a color-bar chart to be shot through the camera lens system and converted into a color picture signal;
a signal generator for generating a reference color-bar signal representative of a reference color-bar;
a viewfinder control circuit for performing a display of the color-bar chart based on the color picture signal on one part of a screen of the viewfinder and for displaying said reference color-bar based on said reference color-bar signal on another part of said screen; and
a color-signal adjusting circuit for manually adjusting a level of a color signal in the color picture signal based on the viewfinder display.
1 Assignment
0 Petitions
Accused Products
Abstract
A video camera whereby the photographer can switch from an automatic to a manual adjustment mode. In the manual mode a color bar chart on a lens cap is pictured on part of the viewfinder of the camera, while an electronically generated reference color bar chart is shown on the other part. The user adjusts one or two potentiometers, each adjusting the gain of a color signal amplifier, until the two color bar charts have the same colors.
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Citations
7 Claims
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1. A color camera apparatus which comprises a camera lens system, an image sensor for converting optical information of an object obtained through the camera lens system into a color picture signal, and a viewfinder for displaying a color picture of the object in a response to the color picture signal, said apparatus further comprising:
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an attachment which is provided with a color-bar chart to be shot through the camera lens system and converted into a color picture signal; a signal generator for generating a reference color-bar signal representative of a reference color-bar; a viewfinder control circuit for performing a display of the color-bar chart based on the color picture signal on one part of a screen of the viewfinder and for displaying said reference color-bar based on said reference color-bar signal on another part of said screen; and a color-signal adjusting circuit for manually adjusting a level of a color signal in the color picture signal based on the viewfinder display. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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Specification