Image signal conversion apparatus, method and, display for image signal conversion based on selected pixel data
First Claim
1. An image signal conversion apparatus for converting a first image signal including a plurality of pixel data into a second image signal including a plurality of pixel data, said image signal conversion apparatus comprising:
- first data selection means for selecting, from said first image signal, a plurality of first pixel data adjacent to a subject pixel of said second image signal;
class detection means for detecting a class of said subject pixel based on a plurality of said first pixel data selected by said first data selection means,wherein said class detection means detects a level distribution pattern of a plurality of said first pixel data and detects said class of said subject pixel based on said level distribution pattern;
resolution selection means for selecting a resolution of an image formed from said second image signal,wherein the resolution selected by a particular user corresponds to the particular user'"'"'s identification information; and
pixel data generation means for generating pixel data of said subject pixel corresponding to said class detected by said class detection means and said resolution selected by said resolution selection means.
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Abstract
An image signal conversion apparatus for converting a SD signal (525i) into a HD signal (525p or the like). In the image signal conversion section, the SD signal is converted into the HD signal, and the image is displayed on the display section. A class code CL indicating a class of a subject pixel of the HD signal is obtained by detecting a space class and a motion class from tap pixel data corresponding to the subject pixel of HD signal which is selectively fetched from a SD signal. The controller loads coefficient data of each class according to the selected resolution into the coefficient memory from the information memory bank when the user selects the resolution. In the calculation circuit pixel data of the subject pixel of the HD signal is calculated using an estimating equation based on the tap data xi corresponding to the subject pixel of the HD signal selectively fetched from the SD signal in the tap selection circuit and the coefficient data read in class code CL from the coefficient memory.
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Citations
27 Claims
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1. An image signal conversion apparatus for converting a first image signal including a plurality of pixel data into a second image signal including a plurality of pixel data, said image signal conversion apparatus comprising:
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first data selection means for selecting, from said first image signal, a plurality of first pixel data adjacent to a subject pixel of said second image signal; class detection means for detecting a class of said subject pixel based on a plurality of said first pixel data selected by said first data selection means, wherein said class detection means detects a level distribution pattern of a plurality of said first pixel data and detects said class of said subject pixel based on said level distribution pattern; resolution selection means for selecting a resolution of an image formed from said second image signal, wherein the resolution selected by a particular user corresponds to the particular user'"'"'s identification information; and pixel data generation means for generating pixel data of said subject pixel corresponding to said class detected by said class detection means and said resolution selected by said resolution selection means. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. An image signal conversion method for converting a first image signal including a plurality of pixel data into a second image signal including a plurality of pixel data, said image signal conversion method comprising:
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a first step of selecting, from said first image signal, a plurality of first pixel data adjacent to a subject pixel of said second image signal; a second step of detecting a class of said subject pixel based on a plurality of said first pixel data selected in said first step, wherein the step of detecting detects a level distribution pattern of a plurality of said first pixel data and detects said class of said subject pixel based on said level distribution pattern; a third step of selecting a resolution of an image formed from said second image signal; wherein the resolution selected by a particular user corresponds to the particular user'"'"'s identification information; and a fourth step of generating pixel data of said subject pixel corresponding to said class detected in said second step and said resolution selected in said third step.
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9. An image display apparatus comprising:
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image signal input section for inputting a first image signal including a plurality of pixel data; image signal conversion means for; receiving said first image signal from said image signal input section, converting said first image signal into a second image signal including a plurality of pixel data and outputting said second image signal; image display means for receiving said second image signal from said image signal conversion means and displaying an image formed from said second image signal; and resolution selection means for selecting a resolution of said image displayed in said image display means, wherein said image signal conversion means includes; first data selection means for selecting, from said first image signal, a plurality of first pixel data adjacent to a subject pixel of said second image signal, class detection means for detecting a class of said subject pixel based on a plurality of said first pixel data selected by said first data selection means, wherein said class detection means detects a level distribution pattern of a plurality of said first pixel data and detects said class of said subject pixel based on said level distribution pattern, and pixel data generation means for generating pixel data of said subject pixel corresponding to said class detected by said class detection means and said resolution selected by said resolution selection means, and wherein the resolution selected by a particular user corresponds to the particular user'"'"'s identification information. - View Dependent Claims (10, 11, 12)
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13. A coefficient data generation apparatus for generating coefficient data of an estimating equation used when a first image signal including a plurality of pixel data is converted into a second image signal including a plurality of pixel data, said coefficient data generation apparatus comprising:
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signal processing means for processing an instructive signal corresponding to said second image signal and obtaining an input signal corresponding to said first image signal; resolution selection means for selecting a resolution of an image formed from said input signal obtained in said signal processing means, wherein the resolution selected by a particular user corresponds to the particular user'"'"'s identification information; first data selection means for selecting, from said input signal, a plurality of first pixel data adjacent to a subject pixel of said instructive signal; class detection means for detecting a class of said subject pixel based on a plurality of said first pixel data selected by said first data selection means, wherein said class detection means detects a level distribution pattern of a plurality of said first pixel data and detects said class of said subject pixel based on said level distribution pattern; second data selection means for selecting from said input signal a plurality of second pixel data adjacent to a subject pixel of said instructive signal; normal equation generation means for generating a normal equation for obtaining said coefficient data of each class, on the basis of said class detected by said class detection means, a plurality of said second pixel data selected by said second data selection means and said data of said subject pixel of said instructive signal; and coefficient data calculation means for obtaining coefficient data of said each class by solving said normal equation. - View Dependent Claims (14)
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15. A coefficient data generation method for generating coefficient data of an estimating equation used when a first image signal including a plurality of pixel data is converted into a second image signal including a plurality of pixel data, said coefficient data generation method comprising:
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a first step of processing an instructive signal corresponding to said second image signal and obtaining an input signal corresponding to said first image signal; a second step of selecting a resolution of an image formed from said input signal obtained in said first step, wherein the resolution selected by a particular user corresponds to the particular user'"'"'s identification information; a third step of selecting from said input signal a plurality of first pixel data adjacent to a subject pixel of said instructive signal; a fourth step of detecting a class of said subject pixel based on a plurality of said first pixel data selected in said third step, wherein the step of detecting detects a level distribution pattern of a plurality of said first pixel data and detects said class of said subject pixel based on said level distribution pattern; a fifth step of selecting, from said input signal, a plurality of second pixel data adjacent to said subject pixel of said instructive signal; a sixth step of generating a normal equation for obtaining said coefficient data of each class on the basis of said class detected in said fourth step, a plurality of said second pixel data selected in said fifth step and said data of said subject pixel of said instructive signal; and a seventh step of obtaining coefficient data of said each class by solving said normal equation generated in said sixth step.
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16. An image signal conversion apparatus for converting a first image signal including a plurality of pixel data into a second image signal including a plurality of pixel data, said image signal conversion apparatus comprising:
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first data selection means for selecting, from said first image signal, a plurality of first pixel data adjacent to a subject pixel of said second image signal; class detection means for detecting a class of said subject pixel based on a plurality of said first pixel data selected by said first data selection means, wherein said class detection means detects a level distribution pattern of a plurality of said first pixel data and detects said class of said subject pixel based on said level distribution pattern; information input section for inputting display-device-information including first identification information showing at least a kind of image display device; image quality information obtaining means for obtaining image quality information corresponding to said first identification information included in said display-device-information received from said information input section, wherein the image quality information is selected by a particular user and corresponds to the particular user'"'"'s identification information; and pixel data generation means for generating pixel data of said subject pixel corresponding to said class detected by said class detection means and said image quality information obtained from said image quality information obtaining means. - View Dependent Claims (17, 18, 19, 20, 21)
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22. An image signal conversion method for converting a first image signal including a plurality of pixel data into a second image signal including a plurality of pixel data, said image signal conversion method comprising the steps of:
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selecting, from said first image signal, a plurality of first pixel data adjacent to a subject pixel of said second image signal; detecting a class of said subject pixel based on a plurality of said selected first pixel data; wherein the step of detecting detects a distribution pattern of a plurality of said first pixel data and detects said class of said subject pixel based on said level distribution pattern; inputting display-device-information including first identification information showing at least a kind of image display device; obtaining image quality information corresponding to said first identification information included in said input display-device-information, wherein the image quality information is selected by a particular user and corresponds to the particular user'"'"'s identification information; and generating pixel data of said subject pixel corresponding to said detected class and said obtained image quality information.
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23. An image display apparatus comprising:
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an image signal input section for inputting a first image signal including a plurality of pixel data; image signal conversion means for receiving said first image signal from said image signal input section, converting said first image signal into a second image signal including a plurality of pixel data, and outputting said second image signal; and an image display device for receiving said second image signal from said image signal conversion means and displaying an image formed from said second image signal, wherein said image display device includes; memory means for memorizing display-device-information including a first identification information showing a kind of image display device at least, and information sending means for sending said display-device-information memorized in said memory means to said image signal conversion section, and wherein said image signal conversion means includes; first data selection means for selecting, from said first image signal, a plurality of first pixel data adjacent to a subject pixel of said second image signal, class detection means for detecting a class of said subject pixel based on a plurality of said first pixel data selected by said first data selection means, wherein said class detection means detects a level distribution pattern of a plurality of said first pixel data and detects said class of said subject pixel based on said level distribution pattern, information receiving means for receiving said display-device-information sent from said image display device, image quality information obtaining means for obtaining image quality information corresponding to said first identification information included in said display-device-information received by said information receiving means, and pixel data generation means for generating pixel data of said subject pixel corresponding to said class detected by said class detection means and said image quality information obtained from said image quality information obtaining means, wherein the image quality information is selected by a particular user and corresponds to the particular user'"'"'s identification information. - View Dependent Claims (24, 25, 26, 27)
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Specification