Television camera apparatus
AssigneeCanon Kabushiki Kaisha
InventorsTadashi Okino, Kunio Ninomiya
Life of this patent
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Abstract
In a TV camera apparatus having an image sensor which photo-electrically converts image sensing light coming from an object, a signal processing circuit which converts a signal output from the image sensor into a luminance signal and color-difference signals and negative-to-positive inverters which invert the luminance signal and the color-difference signals from negative to positive, variable gain amplifiers are arranged within color-difference signal systems to amplify the color-difference signals; and the variable gain amplifiers are arranged to be controlled on the basis of the luminance signal.
Claims2
An image pickup apparatus, comprising::
- a) image pickup means for converting an optical image into an electrical signal;
- b) processing means for producing a luminance signal and color-difference signals from the electrical signal outputted from said image pickup means;
- c) a first inverting means for inverting a level of said luminance signal outputted from said processing means with respect to a predetermined level;
- d) second inverting means for inverting a level of said color-difference signals outputted from said processing means with respect to predetermined levels;
- e) a first variable gain amplifier means for amplifying said luminance signal inverted by said first inverting means;
- f) modulation means for modulating said color-difference signals inverted by said second inverting means;
- g) a second variable gain amplifier means for amplifying said color-difference signals modulated by said modulation means;
- and
- h) mixing means for mixing outputs of said first and second variable gain amplifier means.
An image pickup apparatus, comprising:
- a) image pickup means for converting an optical image into an electrical signal;
- b) processing means for producing a luminance signal and color-difference signals from the electrical signal outputted from said image pickup means;
- c) a first inverting means for inverting a level of said luminance signal outputted from said processing means with respect to a predetermined level;
- d) a second inverting means for inverting said color-difference signals outputted from said processing means with respect to predetermined levels:
- e) modulation means for modulating said color-difference signals before being inverted by said second inverting means;
- f) mixing means for mixing outputs of said first and second inverting means;
- and
- g) variable gain amplifier means for amplifying an output of said mixing means.
Dependencies are inferred from the claim text.