US 2003/0164896 A1 · Information signal processing device, information signal processing method, image signal processing device, image signal processing method and image displaying method using it, coeficient kind data generating device and mehtod used therein, and computer readable meedium and program

Abstract

The present invention relates to an information signal processor and the like preferable for use in the case of converting a format of an image signal or converting an image size. An input image signal, Vin, is converted into an output image signal, Vout that has different format and/or size therefrom. A class code, CL, is obtained from tap data extracted from the Vin and corresponding to each pixel (pixel at a target position) within a unit pixel block, which constitutes Vout. Product-sum device 137 generates the coefficient data, ai0 to ai8, in the upper layered production equation in each class according to the lower layered production equation using coefficient seed data, bij0 to bij8, of each class and resolution information, g and f, during vertical blanking period, while it generates the coefficient data, Wi, in the estimated equation, according to the upper layered production equation during effective vertical scanning period using the coefficient data, ai0 to ai8, in connection with the class code CL and phase information, h and v. A calculation circuit 127 provides pixel data, y, at the target position according to the estimated equation using the tap data, xi, corresponding to the target position and the coefficient data, Wi, obtained by the product-sum device 137.

Claims49

Dependent claims

An information signal processor for converting a first information signal including plural sets of informational data into a second information signal including plural sets of informational data, comprising:

parameter-setting means for setting values of plural parameters in connection with said second information signal;
first memory means for storing coefficient seed data, said coefficient seed data being coefficient data in a production equation for producing coefficient data to be used in an estimated equation, said production equation being classified in a hierarchy in more than one layers, the lowest layered production equation including said plural parameters and said coefficient seed data;
coefficient data generation means for generating said coefficient data to be used in the estimated equation corresponding to the values of plural parameters set by said parameter-setting means, said coefficient data in the estimated equation being produced according to the production equation classified in a hierarchy in more than one layers using said coefficient seed data stored in said first memory means and said set values of plural parameters;
first data selection means for selecting plural sets of first informational data located in periphery of target position in said second information signal, based on said first information signal;
and
calculation means for calculating and obtaining informational data of said target position based on said estimated equation using said coefficient data generated in said coefficient data generation means and said plural sets of the first informational data selected in said first data selection mean.

3 more elements

An image signal processor for converting a first image signal including plural sets of pixel data into a second image signal including plural sets of pixel data, comprising:

parameter-setting means for setting values of plural parameters in connection with the second image signal;
first memory means for storing coefficient seed data, said coefficient seed data being coefficient data in production equation for producing coefficient data to be used in an estimated equation, said production equation being classified in a hierarchy in more than one layers, the lowest layered production equation including said plural parameters and said coefficient seed data;
coefficient data generation means for generating the coefficient data to be used in the estimated equation corresponding to the values of plural parameters set by said parameter-setting means, said coefficient data in the estimated equation being produced according to the production equation classified in a hierarchy in more than one layers using said coefficient seed data stored in said first memory means and said set values of plural parameters;
first data selection means for selecting plural sets of first pixel data located in periphery of target position in the second image signal, based on the first image signal;
and
calculation means for calculating and obtaining pixel data of the target position based on the estimated equation using said coefficient data generated in said coefficient data generation means and said plural sets of the first pixel data selected in said first data selection means.

3 more elements

An image display apparatus comprising:

image signal input means for inputting a first image signal including plural sets of pixel data;
image signal processing means for converting said first image signal received from said image signal input means into a second image signal including plural sets of pixel data and for outputting the resultant second image signal;
image display means for displaying an image produced by the second image signal received from said image signal processing means onto an image display element;
and
parameter-setting means for setting values of plural parameters in connection with the second image signal,
wherein said image signal processing means includes:
first memory means for storing coefficient seed data, said coefficient seed data being coefficient data in a production equation for producing coefficient data to be used in an estimated equation, said production equation being classified in a hierarchy in more than one layers, the lowest layered production equation including said plural parameters and the coefficient seed data;
coefficient data generation means for generating the coefficient data to be used in said estimated equation corresponding to the values of plural parameters set by said parameter-setting means, said coefficient data in the estimated equation being produced according to the production equation classified in a hierarchy in more than one layers using said coefficient seed data stored in said first memory means and the set values of said plural parameters;
data selection means for selecting plural sets of first pixel data located in periphery of the target position in said second image signal, based on said first image signal;
and
calculation means for calculating and obtaining pixel data of the target position based on said estimated equation using said coefficient data generated in said coefficient data generation means and the plural sets of said first pixel data selected in said data selection means.

8 more elements

A method for processing an information signal wherein a first information signal including plural sets of informational data is converted into a second information signal including plural sets of informational data, the method comprising:

a first step of setting values of plural parameters in connection with said second information signal;
a second step of generating coefficient data to be used in estimated equation corresponding to the values of plural parameters set by the first step, said coefficient data in the estimated equation being produced according to a production equation classified in a hierarchy in more than one layers using coefficient seed data and the set values of plural parameters, said coefficient seed data being coefficient data in the production equation for producing coefficient data to be used in an estimated equation, the lowest layered production equation including the plural parameters and said coefficient seed data;
a third step of selecting plural sets of first informational data located in periphery of a target position in said second information signal, based on the first information signal;
and
a fourth step of calculating and obtaining informational data of said target position based on said estimated equation using said coefficient data generated in said second step and the plural sets of first informational data selected in the third step.

2 more elements

A method for processing an image signal wherein a first image signal including plural sets of pixel data is converted into a second image signal including plural sets of pixel data, the method comprising:

a first step of setting values of plural parameters in connection with said second image signal;
a second step of generating coefficient data to be used in estimated equation corresponding to the values of plural parameters set by the first step, said coefficient data in the estimated equation being produced according to a production equation classified in a hierarchy in more than one layers using coefficient seed data and said set values of plural parameters, said coefficient seed data being coefficient data in the production equation for producing the coefficient data to be used in an estimated equation, the lowest layered production equation including said plural parameters and the coefficient seed data;
a third step of selecting plural sets of first pixel data located in periphery of a target position in said second image signal, based on said first image signal;
and
a fourth step of calculating and obtaining pixel data of said target position based on said estimated equation using said coefficient data generated in said second step and the plural sets of said first pixel data selected in said third step.

2 more elements

A coefficient seed data production device for producing coefficient seed data, the coefficient seed data being coefficient data in a production equation for producing coefficient data to be used in estimated equation employed when converting a first information signal including plural sets of informational data into a second information signal including plural sets of informational data, said production equation being classified in a hierarchy in more than one layers, the lowest layered production equation including the coefficient seed data, comprising:

parameter-setting means for setting values of plural parameters each for determining a situation of student signal corresponding to the first information signal in connection with values of plural parameters included in said production equation;
data selection means for selecting plural sets of informational data located in periphery of a target position in teacher signal corresponding to said second information signal, based on said student signal;
first normal equation production means for producing a first normal equation for obtaining the coefficient data in the estimated equation every combination of values of plural parameters set by the parameter-setting means, using the plural sets of informational data selected by the data selection means and the informational data at the target position in said teacher signal;
first coefficient data calculation means for solving said first normal equation to obtain said coefficient data in the estimated equation every combination described above;
second normal equation production means for producing a second normal equation for obtaining coefficient data in a production equation that is still far from being classified in a hierarchy in more than one layers, from the coefficient data every combination described above obtained by said first coefficient data calculation means;
second coefficient data calculation means for solving said second normal equation to obtain the coefficient data in the production equation that is still far from being classified in a hierarchy;
and
coefficient seed data calculation means for obtaining as the coefficient seed data coefficient data in the lowest layered production equation constituting the production equation classified in a hierarchy in more than one layers, using the coefficient data in the production equation that is still far from being classified in a hierarchy, obtained by said second coefficient data calculation means.

5 more elements

A computer readable medium for recording program to allow a computer to execute a method for producing coefficient seed data, said coefficient seed data being coefficient data in a production equation for producing coefficient data to be used in estimated equation employed when converting a first information signal including plural sets of informational data into a second information signal including plural sets of informational data, said production equation being classified in a hierarchy in more than one layers, the lowest layered production equation including the coefficient seed data, said method:

a first step of setting values of plural parameters each for determining a situation of student signal corresponding to said first information signal in connection with values of plural parameters included in said production equation;
a second step of selecting plural sets of informational data located in periphery of a target position in teacher signal corresponding to said second information signal, based on said student signal;
a third step of producing a first normal equation for obtaining the coefficient data in said estimated equation every combination of values of plural parameters set in said first step, using the plural sets of informational data selected in said second step and the informational data at the target position in said teacher signal;
a fourth step of solving said first normal equation produced in said third step to obtain the coefficient data in said estimated equation every combination described above;
a fifth step of producing a second normal equation for obtaining coefficient data in a production equation that is still far from being classified in a hierarchy in more than one layers, from the coefficient data every combination obtained in said fourth step;
a sixth step of solving said second normal equation produced in said fifth step to obtain the coefficient data in said production equation that is still far from being classified in a hierarchy;
and
a seventh step of obtaining as the coefficient seed data coefficient data in the lowest layered production equation constituting the production equation classified in a hierarchy in more than one layers, using the coefficient data in said production equation that is still far from being classified in a hierarchy, obtained in said sixth step.

5 more elements

A program for allowing a computer to execute a method for producing coefficient seed data, said coefficient seed data being coefficient data in a production equation for producing coefficient data to be used in estimated equation employed when converting a first information signal including plural sets of informational data into a second information signal including plural sets of informational data, said production equation being classified in a hierarchy in more than one layers, the lowest layered production equation including the coefficient seed data, said method comprising:

a first step of setting values of plural parameters each for determining a situation of student signal corresponding to said first information signal in connection with values of plural parameters included in said production equation;
a second step of selecting plural sets of informational data located in periphery of a target position in teacher signal corresponding to said second information signal, based on said student signal;
a third step of producing a first normal equation for obtaining the coefficient data in said estimated equation every combination of values of plural parameters set in said first step, using the plural sets of informational data selected in said second step and the informational data at the target position in said teacher signal;
a fourth step of solving said first normal equation produced in said third step to obtain the coefficient data in said estimated equation every combination described above;
a fifth step of producing a second normal equation for obtaining coefficient data in a production equation that is still far from being classified in a hierarchy in more than one layers, from the coefficient data every combination obtained in said fourth step;
a sixth step of solving said second normal equation produced in said fifth step to obtain the coefficient data in said production equation that is still far from being classified in a hierarchy;
and
a seventh step of obtaining as the coefficient seed data coefficient data in the lowest layered production equation constituting the production equation classified in a hierarchy in more than one layers, using the coefficient data in said production equation that is still far from being classified in a hierarchy, obtained in said sixth step.

5 more elements

Dependencies are inferred from the claim text.

Information signal processing device, information signal processing method, image signal processing device, image signal processing method and image displaying method using it, coeficient kind data generating device and mehtod used therein, and computer readable meedium and program

Life of this patent

Information signal processing device, information signal processing method, image signal processing device, image signal processing method and image displaying method using it, coeficient kind data generating device and mehtod used therein, and computer readable meedium and program

Life of this patent

Abstract

Claims49