Method of color image enlargement in which each RGB subpixel is given a specific brightness weight on the liquid crystal display

A liquid crystal display method for displaying an enlarged image on a display panel of a color liquid crystal display apparatus in which display dots each comprising a subpixel displaying red (R), a subpixel displaying green (G), and a subpixel displaying blue (B) placed in this order are arranged in a matrix, characterized by the steps of:

• forming first enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of R-G-B-R-G-B in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a first display dot;
• forming second enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of G-B-R-G-B-R in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a second display dot adjacent to said first display dot;
• forming third enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of B-R-G-B-R-G in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a third display dot adjacent to said second display dot;
• adding said first to third enlarged display brightness data to each other to combine them in data regions of the same color to which weights of brightness of 1/3 and 2/3 are applied, respectively, and
• sequentially outputting to the subpixels said enlarged display brightness data formed by combination to enlarge the original image 4/3 times in the raw direction of said display panel.

A liquid crystal display method for displaying an enlarged image on a display panel of a color liquid crystal display apparatus in which display dots each comprising a subpixel displaying red (R), a subpixel displaying green (G), and a subpixel displaying blue (B) placed in this order are arranged in a matrix, characterized by the steps of:

• enlarging three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a first display dot, to six pieces of first enlarged display brightness data including single-color data at one end the brightness of which is reduced to half and two pieces of data of two other colors at the other end the brightness of which is reduced to half;
• enlarging three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a second display dot adjacent to said first display dot, to six pieces of second enlarged display brightness data including at one end, two pieces of data of the same two colors as in the other end of said first enlarged display brightness data the brightness of which is reduced to half and at the other end, one piece of data of the same color as in the one end of said first enlarged display brightness data the brightness of which is reduced to half;
• adding the two pieces of data at the other end of said first enlarged display brightness data to the two pieces of data at the one end of said second enlarged display brightness data, or the data at the one end of said first enlarged display brightness data to the data at the other end of said second enlarged display brightness data to combine said first and second enlarged display brightness data, and sequentially repeating this sequence of operations;
• and
• thereby sequentially outputting to the subpixels said enlarged display brightness data formed by combination to enlarge the original image 3/2 times in the raw direction of said display panel.

A liquid crystal display method for displaying an enlarged image on a display panel of a color liquid crystal display apparatus in which display dots each comprising a subpixel displaying red (R), a subpixel displaying green (G), and a subpixel displaying blue (B) placed in this order are arranged in a matrix, comprising the steps of:

• forming first enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of R-G-B-R-G-B, G-B-R-G-B-R, or B-R-G-B-R-G in the raw direction and to which weights of brightness of ›1/2, 1, 1, 1, 1/2, 1/2! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a first display dot;
• forming second enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of G-B-R-G-B-R, B-R-G-B-R-G, or R-G-B-R-G-B in the raw direction and to which weights of brightness of ›1/2, 1/2, 1, 1, 1, 1/2! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a second display dot adjacent to said first display dot, the fifth and sixth pieces of said first enlarged display brightness data corresponding in color to the first and second pieces of said second enlarged display brightness data, respectively;
• adding the fifth and sixth pieces of said first enlarged display brightness data to the first and second pieces of said second enlarged display brightness data, respectively to combine said first and second enlarged display brightness data, and
• sequentially outputting to the subpixels said enlarged display brightness data formed by combining to enlarge the original image 3/2 times in the raw direction of said display panel.

A liquid crystal display method for displaying an enlarged image on a display panel of a color liquid crystal display apparatus in which display dots each comprising a subplxel displaying red (R), a subpixel displaying green (G), and a subpixel displaying blue (B) placed in this order are arranged in a matrix, comprising:

• a first step of forming first enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of R-G-B-R-G-B in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a first display dot;
• a second step of forming second enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of G-B-R-G-B-R in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a second display dot following said first display dot;
• a third step of forming third enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of B-R-G-B-R-G in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a third display dot following said second display dot;
• a fourth step of forming supplementary enlarged display brightness data comprising five pieces of data arranged in the order of R-G-B-R-G, G-B-R-G-B, or B-R-G-B-R and to which weights of brightness of ›1/3, 2/3, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting a fourth display dot positioned at one of the following four positions:
• before said first display dot;
• between said first and second display dots;
• between said second and third display dots;
• and after said third display dot;
• a fifth step of adding said first to fourth enlarged display brightness data to each other to combine them in data regions of the same color to which weights of brightness of 1/3 and 2/3 are applied, respectively, and
• sequentially outputting to said subpixels said enlarged display brightness data formed by sequentially repeating said first to fifth steps to enlarge the original image (M+1)/M times in the raw direction of said display panel, where M is a natural number and M/.gtoreq.4.

A liquid crystal display method for displaying an enlarged image on a display panel of a color liquid crystal display apparatus in which display dots each comprising a subpixel displaying red (R), a subpixel displaying green (G), and a subpixel displaying blue (B) placed in this order are arranged in a matrix, comprising:

• at least one first step of forming first enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of R-G-B-R-G-B in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting at least one first display dot;
• at least one second step of forming second enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of G-B-R-G-B-R in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting at least one second display dot following said at least one first display dot;
• at least one third step of forming third enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of B-R-G-B-R-G in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting at least one third display dot following said at least one second display dot;
• at least one fourth step of forming supplementary enlarged display brightness data comprising seven pieces of data arranged in the order of R-G-B-R-G-B-R, G-B-R-G-B-R-G, or B-R-G-B-R-G-B and to which weights of brightness of ›1/3, 2/3, 1, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting at least one fourth display dot positioned at one of the following three positions:
• before said at least one first display dot;
• between two of said display dots that are adjacent to each other;
• and after said at least one third display dot;
• a fifth step of adding said first to fourth enlarged display brightness data to each other to combine them in data regions of the same color to which weights of brightness of 1/3 and 2/3 are applied, respectively, and
• sequentially outputting to said subpixels said enlarged display brightness data formed by sequentially repeating said first to fifth steps to enlarge the original image M/N times in the raw direction of said display panel, where M and N are natural numbers and M.gtoreq.N+2.

A liquid crystal display method for displaying an enlarged image on a display panel of a color liquid crystal display apparatus in which display dots each comprising a subpixel displaying red (R), a subpixel displaying green (G), and a subpixel displaying blue (B) placed in this order are arranged in a matrix, comprising:

• at least one first step of forming first enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of R-G-B-R-G-B in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting at least one first display dot;
• at least one second step of forming second enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of G-B-R-G-B-R in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting at least one second display dot following said at least one first display dot;
• at least one third step of forming third enlarged display brightness data comprising six pieces of enlarged display brightness data arranged in the order of B-R-G-B-R-G in the raw direction and to which weights of brightness of ›1/3, 2/3, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting at least one third display dot following said at least one second display dot;
• at least one fourth step of forming supplementary enlarged display brightness data comprising eight pieces of data arranged in the order of R-G-B-R-G-B-R-G, G-B-R-G-B-R-G-B, or B-R-G-B-R-G-B-R and to which weights of brightness of ›1/3, 2/3, 1, 1, 1, 1, 2/3, 1/3! are applied, respectively, based on three pieces of raw-direction original display brightness data to be displayed in three subpixels constituting at least one fourth display dot positioned at one of the following three positions:
• before said at least one first display dot;
• between two of said display dots that are adjacent to each other;
• and after said at least one third display dot;
• a fifth step of adding said first to fourth enlarged display brightness data to each other to combine them in data regions of the same color to which weights of brightness of 1/3 and 2/3 are applied, respectively, and
• sequentially outputting to said subpixels said enlarged display brightness data formed by sequentially repeating said first to fifth steps to enlarge the original image M/N times in the raw direction of said display panel, where M and N are natural numbers and M.gtoreq.N+2.

A liquid crystal display method for displaying an enlarged image on a display panel of a color liquid crystal display apparatus in which display dots each comprising a subpixel displaying red (R), a subpixel displaying green (G), and a subpixel displaying blue (B) placed in this order are arranged in matrix, characterized by the steps of:

• forming six pieces of first enlarged display brightness data ›(1/3) RL0, (2/3) GL0, (1) BL0, (1) RL0, (2/3) GL0, (1/3) BL0! by weighting and enlarging in the raw direction, three pieces of raw direction original display brightness data ›RL0 (red) GL0 (green), BL0 (blue)!, where RL0, GL0 and BL0 are three subpixels constituting a first display dot;
• forming six pieces of second enlarged display brightness data ›(1/3) GL1, (2/3) BL1, (1) RL1, (1) GL1, (2/3) BL1, (2/3) RL1! by weighting and enlarging in the raw direction, three pieces of raw direction original display brightness data ›RL1, GL1, BL1, where RL1, GL1 and BL1! are three subpixels constituting a second display dot adjacent to said first display dot;
• forming six pieces of third enlarged display brightness data ›(1/3) BL2, (2/3) RL2, (1) GL2, (1) BL2, (2/3) RL2, (1/3) GL2! by weighting and enlarging in the raw direction, three pieces of raw direction original display brightness data ›RL2, GL2, BL2! , where RL2, GL2 and BL2 are three subpixels constituting a third display dot adjacent to said second display dot;
• adding the fifth and sixth pieces of said first enlarged display brightness data ›(2/3) GL0, (1/3) BL0! to the first and second pieces of said second enlarged display brightness data ›(1/3) GL3, (2/3) BL1!, respectively, to combine said first and second enlarged display brightness data;
• adding the fifth and sixth pieces of said second enlarged display brightness data ›(2/3) BL1, (1/3) RL1! to the first and second pieces of said third enlarged display brightness data ›(1/3) BL2, (2/3) RL2!, respectively, to combine said second and third enlarged display brightness data;
• adding the fifth and sixth pieces of said third enlarged display brightness data ›(2/3) RL2, (1/3) GL2! to first and second pieces of a next, enlarged display brightness data ›(1/3) RLX, (2/3) GLX!, respectively, where RLX and GLX are two subpixels of a next display dot adjacent to said third display dot, to combine said third and next enlarged display brightness data, and sequentially repeating this sequence of operations;
• and
• thereby sequentially outputting to the subpixels said enlarged display brightness data formed by combination to enlarge the original image 4/3 times in the raw direction of said display panel.