Image displaying apparatus
First Claim
1. An image displaying apparatus, comprising:
- a plural number of electron sources, being disposed in matrix-like manner, each for emitting electrons therefrom;
a driver for producing drive voltage for driving said electron sources upon basis of a video signal, to be supplied to said electron sources; and
a correct circuit for correcting said video signal, wherein said correct circuit determines a predetermined number of correction points in horizontal and vertical directions, for said plural number of electron sources disposed in the matrix-like manner, corrects the video signal to the electron source corresponding to said correction point upon basis of a first correction value, which is determined in advance, and corrects the video signal corresponding to the electron source located between said correction points, upon basis of a second correction value, which is obtained through an interpolation calculation with using said first correction values, which are determined at each of the correction points.
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Abstract
An image displaying apparatus, comprises: a plural number of electron sources, being disposed in matrix-like manner, each for emitting electrons therefrom; a driver for producing drive voltage for driving the electron sources upon basis of a video signal, to be supplied to the electron sources; and a correct circuit for correcting the video signal, wherein the correct circuit determines a predetermined number of correction points in horizontal and vertical directions, for the plural number of electron sources disposed in the matrix-like manner, corrects the video signal to the electron source corresponding to the correction point upon basis of a first correction value, which is determined in advance, and corrects the video signal corresponding to the electron source located between the correction points, upon basis of a second correction value, which is obtained through an interpolation calculation with using said first correction values, which are determined at each of the correction points, thereby correcting or compensating the unevenness in brightness, with using a small number of correction values therein.
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Citations
15 Claims
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1. An image displaying apparatus, comprising:
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a plural number of electron sources, being disposed in matrix-like manner, each for emitting electrons therefrom;
a driver for producing drive voltage for driving said electron sources upon basis of a video signal, to be supplied to said electron sources; and
a correct circuit for correcting said video signal, wherein said correct circuit determines a predetermined number of correction points in horizontal and vertical directions, for said plural number of electron sources disposed in the matrix-like manner, corrects the video signal to the electron source corresponding to said correction point upon basis of a first correction value, which is determined in advance, and corrects the video signal corresponding to the electron source located between said correction points, upon basis of a second correction value, which is obtained through an interpolation calculation with using said first correction values, which are determined at each of the correction points. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. An image displaying apparatus, comprising:
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a plural number of scanning lines;
a scanning line controller circuit, connected at either one ends of said plural number of scanning lines, for supplying scanning voltages to said plural number of scanning lines, sequentially;
a plural number of signal lines;
a signal line controller circuit, connected with said plural number of signal lines, for supplying driving voltages depending on the video signal inputted, to said plural number of signal lines;
electron sources, connected at intersecting portions of said plural number of scanning lines and said plural number of signal lines intersect, respectively, and each for emitting electrons depending on potential difference between said scanning voltage and said driving voltage; and
a correct circuit for correcting said video signal, wherein a display region of said image displaying apparatus is divided into a plural number of blocks, and said correct circuit corrects the video signals corresponding to the electron source located at four (4) corners of each of said blocks upon basis of a predetermined correction value, which is memorized in advance, and corrects the video signals corresponding to the electron source locating other than said four (4) corners by a correction value, which is obtained through calculation of said correction value. - View Dependent Claims (10, 11, 12, 13)
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14. An image displaying apparatus, comprising:
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a plural number of electron sources, being disposed in matrix-like manner, each for emitting electrons therefrom;
a driver for producing drive voltage for driving said electron sources upon basis of a video signal, to be supplied to said electron sources; and
a correct circuit for correcting said video signal, wherein said correct circuit determines a predetermined number of correction points in horizontal and vertical directions, for said plural number of electron sources disposed in the matrix-like manner, and said video signal is so corrected that at least one (1) column of the video signal in the vertical direction outputted from said correct circuit has a shape of a broken line having breaking points at said predetermined number of correction points, when a video signal having a constant graduation for one (1) piece of a screen is inputted as said video signal. - View Dependent Claims (15)
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Specification