JP4969194B2 - Video display device and video display method - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a video display apparatus and a video display method, capable of attaining high resolution while suppressing generation of a false color when composition elements of four or more colors are used as one pixel unit. <P>SOLUTION: In a sampling part 12, analog RGB signals are sampled at two or more timings to one pixel unit. These timings are set to be made corresponding to a location of an added color except RGB and a location according to an RGB ratio constituting this added color. Thus based on the RGB signals obtained by sampling, four or more color signals are created by a display use color signal creating part 14. <P>COPYRIGHT: (C)2008,JPO&amp;INPIT

Description

  The present invention relates to a video display device and a video display method for displaying a color video, and more particularly, to a video display device and a video display method for displaying a color video by using four or more constituent elements.

  In a video display device composed of a plurality of color components such as an LCD (Liquid Crystal Display) and a PDP (Plasma Display Panel), the plurality of color components are displayed as a single pixel unit. That is, three-color constituent elements of RGB (Red, Green, Blue) are used as the constituent elements of a plurality of colors, and one RGB unit is used for each pixel. Although the arrangement of the three color components is not the same position but adjacent to each other, it is a slight shift for the human eye, so the colors of the three color components are additively mixed, It is recognized by human eyes as light of one pixel unit.

  In the video display device including the RGB constituent elements, sampling is performed for each pixel unit in order to convert the analog video signal into the digital video signal. Sampling was performed corresponding to the position of the component element of G arranged in (1). However, since sampling is performed for each of the three constituent elements, a video having a lower resolution than the resolution of the constituent elements is reproduced in the horizontal direction.

  Therefore, in order to obtain a higher resolution in the horizontal direction, in each of three consecutive fields of video, in the first field, three constituent elements arranged in RGB are set as one pixel unit, and in the second field, three elements arranged in GBR. In the third field, the constituent elements are set as one pixel unit, and the three constituent elements arranged in the BRG are set as one pixel unit, and the arrangement of the constituent elements in one pixel unit is changed in three fields (Patent Document 1). reference).

According to the image display method of Patent Document 1, sampling is performed by giving a deviation of (1 / fs) / 3 time with respect to the sampling frequency fs for each field, so that one pixel-unit component element becomes one component element. Can be shifted one by one. The apparent horizontal resolution can be increased by shifting the constituent elements in units of one pixel in this way.
JP 2000-221931 A

  However, since human visibility differs for each color of RGB, in the image display method of Patent Document 1, when GBR is set to one pixel unit in the second field, it seems that G and R are separated. . As a result, a phenomenon called color falsification may be caused. Recently, video display devices that emphasize high color reproducibility are spreading, and as one method, complementary colors such as Cy (Cyan), Mg (Magenta), and Ye (Yellow) are added to the three primary colors of RGB. An element composed of four additional color components has been proposed.

  However, when the image display method of Patent Document 1 is applied to the four-color constituent elements, it is circulated in four fields. Therefore, even if the resolution is increased in a pseudo manner, a period of 4 fields is required. Therefore, depending on the time for reproducing the 4 fields, there is a possibility that the flicker is confirmed by human eyes. Furthermore, since four constituent elements are arranged, the resolution of one pixel unit is low as a result. Therefore, even with the image display method of Patent Document 1, it may be difficult to simulate high resolution. .

  In view of such a problem, the present invention provides a video display device and a video display method capable of suppressing the occurrence of color falsification and achieving a high resolution in the case where four or more color components are set as one pixel unit. The purpose is to do.

  In order to achieve the above object, the video display device of the present invention generates n color signals that are four or more colors added with colors different from the specific three colors based on the specific three color video signals. In a video display device having a display color signal generation unit that performs and a display unit in which one pixel unit is configured by n components corresponding to n colors, the timing for each pixel unit that samples the video signal The first timing corresponding to the installation position of each of the additional colors added in addition to the specific three colors, and the second timing corresponding to the position where the additional colors and the colors are equivalent by the specific three colors A sub-sampling unit that sets at a plurality of timings and samples the video signal at the first and second timings, wherein the display color signal generation unit is a sampling unit; Based on the value of the ring signal, for generating a color signal of the n colors.

  In such a video display device, when n colors are four colors, the first timing is a timing corresponding to the installation position of the added one color, and the second timing is equivalent to the added one color. It is assumed that the timing corresponds to the position corresponding to the ratio of the specific three colors. When n colors are five colors, the first timing is two timings corresponding to the installation positions of the two added colors, and the second timing is equivalent to a color obtained by combining the two added colors. It is assumed that there is one timing corresponding to the position corresponding to the ratio of the specific three colors.

  Further, the display color signal generation unit generates a color signal for the additional color based on the value of the signal sampled at the first timing, and based on the value of the signal sampled at the second timing. The color signals for the specific three colors may be generated. The display color signal generation unit generates a color signal for the additional color based on the value of the signal sampled at the first timing, and the color based on the value of the signal sampled at the first timing. A color signal for the specific three colors may be generated by performing weighted addition averaging of the signal and the color signal based on the value of the signal sampled at the second timing.

  In the display unit, the one pixel unit may be constituted by n constituent elements arranged in one direction, or n constituent elements arranged in a matrix in two directions. It does not matter even if it is constituted by.

  Further, the video display method of the present invention generates n color signals that are four or more colors added with colors different from the specific three colors on the basis of the specific three color video signals, and according to the n colors. In a video display method for displaying a video by giving a display unit configured by one component unit by n component elements, the timing for each pixel unit for sampling the video signal is set to other than the specific three colors. The first timing corresponding to the installation position of each added additional color and the second timing corresponding to the second timing corresponding to a position where the additional color and the color are equivalent by the specific three colors are set. In addition, after the video signal is sampled at the second timing, the n color signals are generated based on the value of the sampled signal.

  In such a video display method, when n colors are four colors, the first timing is a timing corresponding to the installation position of the added one color, and the second timing is equivalent to the added one color. It is assumed that the timing corresponds to the position corresponding to the ratio of the specific three colors. When n colors are five colors, the first timing is two timings corresponding to the installation positions of the two added colors, and the second timing is equivalent to a color obtained by combining the two added colors. It is assumed that there is one timing corresponding to the position corresponding to the ratio of the specific three colors.

  Further, a color signal for the additional color is generated based on the value of the signal sampled at the first timing, and the color signal for the specific three colors is generated based on the value of the signal sampled at the second timing. May be generated. Further, a color signal for the additional color is generated based on the value of the signal sampled at the first timing, and the color signal based on the value of the signal sampled at the first timing is sampled at the second timing. A color signal for the specific three colors may be generated by performing weighted addition averaging of the color signals based on the signal values.

  According to the present invention, since a plurality of sampling timings are provided for each pixel unit, the number of pixels can be increased in a pseudo manner, and the resolution can be increased. In other words, when four color signals are generated from three color video signals, the number of pixels can be artificially increased by setting a plurality of sampling timings in units of one pixel, and the resolution can be increased. it can. This also makes it possible to suppress the occurrence of color falsification.

  Embodiments of the present invention will be described below with reference to the drawings.

<Configuration of video display device>
First, the configuration of a video display apparatus that is common to the following embodiments will be described with reference to the drawings. FIG. 1 is a block diagram showing an internal configuration of a video display apparatus that is common to the following embodiments.

  The video display apparatus shown in FIG. 1 includes a luminance color difference-RGB matrix unit 11 that generates an analog RGB signal by calculating using the luminance signal Y of the input analog signal and the color difference signals Cr, Cb, and luminance color difference-RGB. A sub-sampling unit 12 that samples an analog RGB signal from the matrix unit 11 at a set pixel position to generate an RGB signal that becomes a digital signal, and a digital RGB signal obtained by the sub-sampling unit 12 are temporarily stored. The color signal generated by the display signal generation unit 14, the display color signal generation unit 14 that converts the color signal including four or more colors including RGB using the digital RGB signal stored in the memory unit 13, A given driver unit 15 that performs horizontal and vertical scanning, and a display unit 1 that displays video by horizontal and vertical scanning of the driver unit 15 When provided the clock CL and the horizontal and vertical scanning signals H control signal for controlling the sampling operation in subsampling unit 12, a sub-sampling control unit 17 which generates from the V, and.

  In the video display device configured as described above, when an analog luminance signal Y and color difference signals Cr, Cb are input, the luminance color difference-RGB matrix unit 11 applies coefficients to the luminance signal Y and the color difference signals Cr, Cb. By giving and adding, an analog RGB signal is generated. Then, this analog RGB signal is given to the sub-sampling unit 12. Further, the sub-sampling control unit 17 recognizes the arrangement of the constituent elements in units of one pixel in the display unit 16. Then, a control signal that can set the sampling timing of the analog RGB signal in the sub-sampling unit 12 according to the arrangement of the constituent elements is generated by the clock CL and the horizontal and vertical scanning signals H and V.

  By supplying this control signal to the sub-sampling unit 12, the analog RGB signal is sampled at a timing set by the control signal and converted into a digital RGB signal. The digital RGB signal obtained by the sub-sampling unit 12 is given to the memory unit 13 and temporarily stored for each sampled data. The detailed operation of the sub-sampling unit 12 varies depending on the following embodiments, and will be described later in each of the following embodiments.

  Then, the display signal generation unit 14 reads the data of each of the RGB signals temporarily stored in the memory unit 13 at each sampling timing. The display signal generation unit 14 generates a color signal to be given to components having different colors in the display unit 16 based on the RGB signals read at each sampling timing. At this time, data at a plurality of sampling timings are input as data for each RGB signal for each pixel unit, data for each component is calculated, and a color signal is generated by the data for each component resulting from the calculation. The The detailed operation of the display signal generation unit 14 is also different in each of the following embodiments, and will be described later in each of the following embodiments.

  A color signal composed of data corresponding to each component is supplied from the display signal generation unit 14 to the driver unit 15. Then, the driver unit 15 outputs the color signal data from the display signal generation unit 14 as a horizontal scanning signal for each row, and drives the constituent elements in each row for each row to which the color signal data is applied. Output a signal. Accordingly, the constituent elements provided for each pixel unit in the display unit 16 emit light for each row, and an image based on the input luminance signal Y and the color difference signals Cr and Cb is displayed.

  Each embodiment of such a video display device will be described below. In each of the following embodiments, the operations of the sub-sampling unit 12 and the display signal generation unit 14 are different depending on the arrangement of the constituent elements constituting one pixel unit. Therefore, the sampling unit 12 and the display signal generation The detailed operation of each unit 14 will be described.

<First Embodiment>
A first embodiment of the present invention will be described with reference to the drawings. FIG. 2 is a diagram illustrating the relationship between the arrangement of the constituent elements in the display unit of the video display apparatus according to the present embodiment and the timing at which sampling is performed.

  As shown in FIG. 2, in the display unit 16 of the video display device according to the present embodiment, one pixel unit Gx1 is configured by four constituent elements R1, G1, B1, Ye1 arranged in the horizontal direction. The constituent elements R1, G1, B1, and Ye1 are constituent elements corresponding to the color signals R (Red), G (Green), B (Blue), and Ye (Yellow), and R1, G1, B1, and Ye1. Arranged in the order of. Further, since the color signal Ye is generated by the synthesis of the color signals R and G, it is assumed that the color signal Ye can be replaced with the color signal Ye = R + G in a pseudo manner.

  As described above, in the display unit 14, one pixel unit Gx1 constituted by the constituent elements R1, G1, B1, Ye1 arranged as shown in FIG. 2 is repeatedly arranged in the horizontal direction, and a plurality of pixel units Gx1 are arranged. Arrange repeatedly. Then, by arranging the rows in which the constituent elements R1, G1, B1, Ye1 for the plurality of pixel units Gx1 are arranged in the vertical direction, the constituent elements R1, G1, B1, Ye1 arranged adjacent to each other in the horizontal direction in the display unit. A plurality of pixel units Gx1 are arranged in a matrix.

  When each pixel unit Gx1 in the display unit 16 is configured in this way, two timings T1 and T2 are set for one pixel unit Gx1 as timing for sampling the RGB signals in the sub-sampling unit 12. That is, based on the fact that the color signal Ye can be pseudo-replaced with R + G synthesized by the color signals R and G, the constituent elements R1, G1, and B1 are set as one pixel unit Ga1, and the constituent element B1 , Ye1 is set as one pixel unit Gb1 in a pseudo manner. Then, timings T1 and T2 corresponding to the positions of the pseudo pixel units Ga1 and Gb1 are set as sampling timings. At this time, the timing T1 is a timing corresponding to the center position between the two constituent elements R1 and G1, and the timing T2 is a timing corresponding to the central position of the constituent element Ye1.

  As described above, when the timings T1 and T2 are set for each pixel unit Gx1, when each analog RGB signal as shown in FIG. 3 is input to the sub-sampling unit 12, the analog RGB signal is shown in FIG. As shown, sampling is performed at timings T1 and T2 for each pixel unit Gx1. Then, the sampled analog RGB signal value is converted into digital data and stored in the memory unit 13 as digital RGB.

  Therefore, the memory unit 13 stores digital RGB signal data for each of the pseudo pixel units Ga1 and Gb1. Then, the display signal generation unit 14 reads the digital RGB signal data of each of the pseudo pixel units Ga1 and Gb1 for each pixel unit Gx1. When the display signal generation unit 14 reads the digital RGB signal data for the pseudo pixel unit Ga1 as shown in FIG. 4, the data for each RGB signal constitutes the pixel unit Gx1 as shown in FIG. Among the elements, the data is for the constituent elements R1, G1, and B1. When the digital RGB signal data for the pseudo pixel unit Gb1 as shown in FIG. 4 is read, as shown in FIG. 6, the B signal data is one of the constituent elements constituting the pixel unit Gx1. The data for the element B1 and the data obtained by combining the data of the RG signal are the data for the constituent element Ye1, which is one of the constituent elements constituting the pixel unit Gx1.

  That is, as shown in FIG. 7, the display signal generation unit 14 receives the RGB signal of the pseudo pixel unit Ga1 and generates the color signal for generating the color signal to be given to each of the constituent elements R1, G1, and B1. A generation unit 141 and a BYe color signal generation unit 142 that receives the RGB signal of the pseudo pixel unit Gb1 and generates color signals to be provided to the constituent elements B1 and Ye1, respectively. The RGB color signal generation unit 141 generates color signals to be given to the constituent elements R1, G1, and B1, and the BYe color signal generation unit 142 generates color signals to be given to the constituent elements B1 and Ye1, respectively. The weighted average is performed on the color signals of the component element B1 from the RGB signal generation unit 141 and the BYe signal generation unit 142, respectively.

  Therefore, as shown in FIG. 7, the display signal generation unit 14 further includes a weighted addition average unit 143 that generates a color signal of the component B1, and in this weighted addition average unit 143, the RGB signal generation unit 141 and BYe. A weighted average of the color signals of the component B1 from each of the signal generators 142 is performed. That is, as shown in FIG. 8, the color signal b1 of the constituent element B1 obtained from the RGB signal of the pseudo pixel unit Ga1, and the color signal b2 of the constituent element B1 obtained from the RGB signal of the pseudo pixel unit Gb1 Thus, the weighted average of k × b1 + (1−k) × b2 (k is a constant of 0 <k <1) is performed, and the color signal b3 of the component B1 is generated.

  As described above, when the color signals of the constituent elements R1, G1, B1, and Ye1 are generated, the color signals corresponding to the installation positions of the constituent elements R1, G1, B1, and Ye1 on the display unit 16 are obtained. As shown in FIG. 9, the color signals of the generated component elements R1, G1, B1, Ye1 are synthesized. That is, the display signal generation unit 14 includes a synthesis unit 144 that synthesizes the color signals of the constituent elements R1, G1, B1, and Ye1, as shown in FIG. In the combining unit 144, the color signals given to the constituent elements R 1 and G 1 from the RGB color signal generating unit 141, the color signals given to the constituent element B 1 from the weighted addition averaging unit 143, and the BYe color signal generating unit 142 By synthesizing the color signal given to the constituent element Ye1, the color signal of one pixel unit Gx1 is generated.

  Then, the color signals of the constituent elements R1, G1, B1, Ye1 constituting the pixel unit Gx1 obtained by the synthesis are output to the driver unit 15. As a result, the driver unit 15 outputs a horizontal scanning signal to the display unit 16 based on the color signal data of the constituent elements R1, G1, B1, Ye1 given for each pixel unit Gx1, so that the display unit 16 Video is played back.

  In this way, by setting the pseudo pixel units Ga1 and Gb1 for each pixel unit Gx1 and setting the sampling timings T1 and T2, the pixel unit composed of the four constituent elements is simulated as two pixel units. Can be divided. As a result, the resolution can be increased as compared with the case where the four constituent elements are in units of one pixel, and further, the color reproduction phenomenon can be prevented and sharpened for the reproduced video.

<Second Embodiment>
A second embodiment of the present invention will be described with reference to the drawings. FIG. 10 is a diagram illustrating the relationship between the arrangement of the constituent elements in the display unit of the video display apparatus according to the present embodiment and the timing at which sampling is performed. FIG. 12 is a block diagram showing an internal configuration of the display signal generation unit 14 in the video display apparatus according to the present embodiment.

  As shown in FIG. 10, in the display unit 16 of the video display device according to the present embodiment, one pixel unit Gx2 is configured by four constituent elements R1, G1, B1, and Cy1 arranged in the horizontal direction. The constituent elements R1, G1, B1, and Cy1 are constituent elements corresponding to the color signals R (Red), G (Green), B (Blue), and Cy (Cyan), and R1, G1, B1, and Cy1. Arranged in the order of. Further, since the color signal Cy is generated by combining the color signals G and B, it is assumed that the color signal Cy = G + B can be replaced in a pseudo manner.

  That is, unlike the first embodiment, one pixel unit Gx2 configured by the constituent elements R1, G1, B1, and Cy1 arranged as shown in FIG. 10 is arranged in a matrix in the display unit 14. When each pixel unit Gx2 in the display unit 16 is configured in this way, two timings T3 and T4 are set for one pixel unit Gx2 as timing for sampling the RGB signals in the sub-sampling unit 12.

  In the present embodiment, unlike the first embodiment, based on the fact that the color signal Cy can be artificially replaced with G + B synthesized by the color signals G and B, the constituent elements R1, G1, and B1 are replaced by one pixel unit Ga1. And the component elements Cy1 and R1 are set as one pixel unit Gb2. Note that the pixel unit Gb2 is configured by the constituent element Cy1 in one of the two adjacent pixel units Gx2 and the constituent element R1 in the other. Timings T3 and T4 corresponding to the positions of the pseudo pixel units Ga1 and Gb2 are set as sampling timings. At this time, the timing T3 is a timing corresponding to the center position of the two constituent elements G1 and B1, and the timing T4 is a timing corresponding to the center position of the constituent element Cy1.

  Thus, when the timings T3 and T4 are set for each pixel unit Gx2, when each analog RGB signal as shown in FIG. 11A is input to the sub-sampling unit 12, the analog RGB signal is As shown in FIG. 11B, sampling is performed at timings T3 and T4 for each pixel unit Gx2. Then, the sampled analog RGB signal values are converted into digital data, and stored in the memory unit 13 as digital RGB signals of the pseudo pixel units Ga1 and Gb2, as in the first embodiment.

  Then, the display signal generation unit 14 reads the digital RGB signal data of each of the pseudo pixel units Ga1 and Gb2 for each pixel unit Gx2. As shown in FIG. 12, the display signal generation unit 14 receives an RGB signal of a pseudo pixel unit Ga1, and generates an RGB color signal generation unit 141 that generates a color signal to be given to each of the constituent elements R1, G1, and B1. The CyR color signal generation unit 145 that receives the RGB signal of the pseudo pixel unit Gb2 and generates the color signal to be given to each of the configuration elements Cy1 and R1, and the configuration element R1 generated by the CyR signal generation unit 145 A memory unit 146 that temporarily stores color signals for the color signal, and a weighted addition average unit that performs weighted addition averaging of the color signal for the component element R1 from the RGB color signal generation unit 141 and the color signal for the component element R1 stored in the memory unit 146 147, and a combining unit 144 that combines the color signals of the constituent elements R1, G1, B1, and Cy1.

  In such a display signal generation unit 14, when the digital RGB signal data in one pixel unit Gx2 is read from the memory unit 13, the RGB color signal generation unit 141 uses the pseudo RGB signal of the pixel unit Ga1 based on the RGB signal. Color signals to be provided to the constituent elements R1, G1, and B1 are generated. The CyR color signal generation unit 145 generates color signals to be given to the constituent elements Cy1 and R1 based on the pseudo RGB signal of the pixel unit Gb2. As for the color signal given to the component element R1 obtained by the CyR color signal generation unit 145, the color signal and CyR color signal generation given to the component elements R1, G1, B1 obtained by the RGB color signal generation unit 141, respectively. Unlike the color signal given to the constituent element Cy1 obtained by the unit 145, this is a color signal for the constituent element R1 constituting the pixel unit adjacent to the target pixel unit Gx2.

  The color signal for the component R1 obtained by the CyR color signal generation unit 145 is given to the memory unit 146 and temporarily stored therein. Further, the color signal r1 for the component element R1 obtained by the RGB color signal generation unit 141 and the color signal r2 for the component element R1 of the target pixel unit Gx2 already stored in the memory unit 146 are weighted addition averaging units. 147. When the color signals r1 and r2 are weighted and averaged by the weighted averaging unit 147, the color signal r3 for the component R1 that has been weighted and averaged is output.

  Then, the color signal for the component element R1 weighted and averaged by the weighted addition averaging unit 147, the color signal for each of the component elements G1 and B1 obtained by the RGB color signal generation unit 141, and the CyR color signal generation unit 145 The resultant color signal for the constituent element Cy1 is provided to the combining unit 144. The color signals of the constituent elements R1, G1, B1, and Cy1 constituting the pixel unit Gx2 obtained by the synthesis are output to the driver unit 15. Accordingly, the driver unit 15 outputs a horizontal scanning signal to the display unit 16 based on the color signal data of the constituent elements R1, G1, B1, and Cy1 given for each pixel unit Gx2. Video is played back.

  As described above, in this embodiment as well, as in the first embodiment, the pseudo pixel units Ga1 and Gb2 are set for each pixel unit Gx2, and the sampling timings T3 and T4 are set. A pixel unit composed of constituent elements can be divided into two pixel units in a pseudo manner. As a result, the resolution can be increased as compared with the case where the four constituent elements are in units of one pixel, and further, the color reproduction phenomenon can be prevented and sharpened for the reproduced video.

<Third Embodiment>
A third embodiment of the present invention will be described with reference to the drawings. FIG. 13 is a diagram illustrating the relationship between the arrangement of components in the display unit of the video display apparatus according to the present embodiment and the timing at which sampling is performed. FIG. 15 is a block diagram showing an internal configuration of the display signal generation unit 14 in the video display apparatus according to the present embodiment.

  As shown in FIG. 13, in the display unit 16 of the video display device according to the present embodiment, one pixel unit Gx3 is configured by five constituent elements R1, G1, B1, Ye1, and Cy1 arranged in the horizontal direction. The constituent elements R1, G1, B1, Ye1, and Cy1 are constituent elements corresponding to the color signals R (Red), G (Green), B (Blue), Ye (Yellow), and Cy (Cyan), respectively. R1, G1, B1, Ye1, and Cy1 are arranged in this order. Further, it is assumed that the color signals Ye and Cy can be replaced with the color signal Ye = R + G and the color signal Cy = G + B in a pseudo manner, as in the first and second embodiments.

  That is, unlike the first and second embodiments, one pixel unit Gx3 constituted by the constituent elements R1, G1, B1, Ye1, and Cy1 arranged as shown in FIG. 13 is arranged in a matrix in the display unit 14. The When each pixel unit Gx3 in the display unit 16 is configured in this way, three timings T5 to T7 are set for one pixel unit Gx3 as timings for sampling the RGB signals in the sub-sampling unit 12.

  In the present embodiment, as in the first embodiment, the constituent elements R1, G1, and B1 are set as one pixel unit Ga1, and the constituent elements B1 and Ye1 are set as one pixel unit Gb1. Further, similarly to the second embodiment, the constituent elements Cy1 and R1 are set to be one pixel unit Gb2 in a pseudo manner. Then, timings T5 to T7 corresponding to the positions of the pseudo pixel units Ga1, Gb1, and Gb2 are set as sampling timings. At this time, the timing T5 is a timing according to the center position of the constituent element G1, and, similarly to the timing T2 of the second embodiment, the timing T6 is a timing according to the center position of the constituent element Ye1, Similarly to the timing T4 of the embodiment, the timing T7 is a timing according to the center position of the component Cy1.

  Thus, when the timings T5 to T7 are set for each pixel unit Gx3, when each analog RGB signal as shown in FIG. 14A is input to the sub-sampling unit 12, the analog RGB signal is As shown in FIG. 14B, sampling is performed at timings T5 to T7 for each pixel unit Gx3. Then, the sampled analog RGB signal values are converted into digital data and stored in the memory unit 13 as digital RGB signals of the pseudo pixel units Ga1, Gb1, and Gb2, as in the first and second embodiments. Let

  Further, as shown in FIG. 15, the display signal generation unit 14 receives an RGB signal of a pseudo pixel unit Ga1 and generates a color signal to be given to each of the constituent elements R1, G1, and B1, respectively. 141, the RGB color signal generation unit 142 that receives the RGB signal of the pseudo pixel unit Gb1 and generates the color signal to be given to each of the constituent elements B1 and Ye1, and the RGB signal of the pseudo pixel unit Gb2. A CyR color signal generation unit 145 that generates color signals to be provided to the respective component elements Cy1 and R1, a memory unit 146 that temporarily stores color signals for the component element R1 generated by the CyR signal generation unit 145, and RGB A weighted addition averaging unit 143 that performs weighted addition averaging of the color signals from the color signal generation unit 141 and the BYe color signal generation unit 142 to the constituent element B1, and RGB colors A weighted addition averaging unit 147 that performs weighted addition averaging of the color signal for the component R1 from the signal generation unit 141 and the color signal for the component R1 stored in the memory unit 146, and each of the components R1, G1, B1, Ye1, and Cy1. And a synthesizing unit 144 for synthesizing the color signals.

  In such a display signal generation unit 14, when the digital RGB signal data in one pixel unit Gx3 is read from the memory unit 13, the RGB color signal generation unit 141 uses the pseudo RGB signal of the pixel unit Ga1 based on the RGB signal. Color signals to be provided to the constituent elements R1, G1, and B1 are generated. The BYe color signal generation unit 142 generates color signals to be given to the constituent elements B1 and Ye1 based on the pseudo RGB signal of the pixel unit Gb1. Further, the CyR color signal generation unit 145 generates color signals to be given to the constituent elements Cy1 and R1 based on the pseudo RGB signal of the pixel unit Gb2. The color signals given to the component element R1 obtained by the CyR color signal generation unit 145 are given to the component elements R1, G1, B1 obtained by the RGB color signal generation unit 141, as in the second embodiment. Unlike the color signal given to the constituent element Cy1 obtained by the color signal and CyR color signal generation unit 145, the color signal is for the constituent element R1 constituting the pixel unit adjacent to the target pixel unit Gx3.

  Then, when the color signals b1 and b2 of the component element B1 from the RGB signal generation unit 141 and the BYe signal generation unit 142 are given to the weighted addition averaging unit 143, weighted addition averaging is performed on the color signals b1 and b2. Thus, the color signal b3 for the component B1 is generated. Further, the color signal for the component R1 obtained by the CyR color signal generation unit 145 is given to the memory unit 146 and temporarily stored therein. Further, the color signal r1 for the component element R1 obtained by the RGB color signal generation unit 141 and the color signal r2 for the component element R1 of the target pixel unit Gx2 stored in the memory unit 146 are weighted addition averaging unit 147. Given to. When the color signals r1 and r2 are weighted and averaged by the weighted averaging unit 147, the color signal r3 for the component R1 that has been weighted and averaged is output.

  Then, the color signals for the components B1 and R1 weighted and averaged by the weighted average averaging units 143 and 147, the RGB color signal generation unit 141, the BYe signal generation unit 142, and the CyR color signal generation unit 145, respectively. The resultant color signals for the constituent elements G1, Ye1, and Cy1 are provided to the combining unit 144. The color signals of the constituent elements R1, G1, B1, Ye1, and Cy1 constituting the pixel unit Gx3 obtained by the synthesis are output to the driver unit 15. Accordingly, the driver unit 15 outputs a horizontal scanning signal to the display unit 16 based on the color signal data of the constituent elements R1, G1, B1, Ye1, and Cy1 given for each pixel unit Gx3. 16 is reproduced.

  As described above, in this embodiment, for each pixel unit Gx3, the pseudo pixel units Ga1, Gb1, and Gb2 are set, and the sampling timings T5 to T7 are set. Can be pseudo-divided into three pixel units. As a result, compared with the case where the five constituent elements are set to one pixel unit, or the same as in the first and second embodiments, the resolution is higher than the case where the four constituent elements are set to one pixel unit. Furthermore, it is possible to prevent color falsification and sharpen the reproduced video.

  In the first to third embodiments, the pixel unit is configured by arranging the constituent elements of different colors in the horizontal direction. At this time, regarding the arrangement of the constituent elements constituting one pixel unit, The invention is not limited to the first to third embodiments. At this time, the set pseudo pixel unit is configured by a plurality of adjacent constituent elements having the same RGB relationship. Then, the sampling timing is set to a timing corresponding to a position equivalent to a ratio at which the colors of the constituent elements constituting each pseudo pixel unit are combined.

  Further, when there are constituent elements arranged at positions where the respective pseudo pixel units are overlapped, the timing corresponding to the position equivalent to the ratio in which the colors of the constituent elements other than the constituent elements are combined is used as the sampling timing. Set. That is, the timing corresponding to the position where the component element of the color added to RGB is installed and the timing corresponding to the position equivalent to the color synthesized by the color added to the component elements R1, G1, B1. Are set as sampling timings. Further, the color signals for the constituent elements in which the pseudo pixel units overlap are generated by weighted addition of the color signals obtained from the respective pseudo pixel units.

<Fourth Embodiment>
A fourth embodiment of the present invention will be described with reference to the drawings. In this embodiment, unlike the first to third embodiments, one pixel unit is set by four constituent elements arranged in a matrix of 2 rows and 2 columns. FIG. 16 is a diagram illustrating the relationship between the arrangement of components in the display unit of the video display apparatus according to the present embodiment and the timing of sampling. FIG. 18 is a block diagram showing the internal configuration of the display signal generation unit 14 in the video display apparatus of this embodiment.

  As shown in FIG. 16, in the display unit 16 of the video display device of the present embodiment, two component elements R1, G1 arranged in the horizontal direction and two component elements Ye1, B1 arranged in the horizontal direction are vertically aligned. Are arranged in a single pixel unit Gx4. The constituent elements R1, G1, B1, and Ye1 are constituent elements corresponding to the color signals R (Red), G (Green), B (Blue), and Ye (Yellow), respectively. The constituent elements R1 and G1 are arranged to repeat in the order of R1 and G1 in the horizontal direction in the odd rows, and the constituent elements B1 and Ye1 are arranged to repeat in the order of Ye1 and B1 in the even rows. . Further, it is assumed that each of the color signals Ye can be replaced with the color signal Ye = R + G in a pseudo manner as in the first embodiment.

  Thus, when each pixel unit Gx4 in the display unit 16 is configured, two timings T8 and T9 are set for one pixel unit Gx4 as timings for sampling the RGB signals in the sub-sampling unit 12. That is, based on the fact that the color signal Ye can be pseudo-replaced with R + G synthesized by the color signals R and G, the constituent elements R1, G1 and B1 are set as one pixel unit Ga2 and the constituent element B1. , Ye1 is set as one pixel unit Gb3 in a pseudo manner. Timings T9 and T8 corresponding to the positions of the pseudo pixel units Ga2 and Gb3 are set as sampling timings. At this time, the timing T9 is a timing corresponding to the center position between the two constituent elements R1 and G1, and the timing T8 is a timing corresponding to the central position of the constituent element Ye1.

  In this way, when the timings T8 and T9 are set for each pixel unit Gx4, when each analog RGB signal as shown in FIG. 17A is input to the subsampling unit 12, the analog RGB signal is As shown in FIG. 17B, sampling is performed at timings T8 and T9 for each pixel unit Gx4. Then, the sampled analog RGB signal values are converted into digital data and stored in the memory unit 13 as digital RGB signals of the pseudo pixel units Ga2 and Gb3, as in the first embodiment.

  Then, the display signal generator 14 reads the digital RGB signal data of each of the pseudo pixel units Ga2 and Gb3 for each pixel unit Gx4. As shown in FIG. 18, the display signal generation unit 14 is provided with synthesis units 144 a and 144 b instead of the synthesis unit 144 in the configuration of FIG. 7 in the first embodiment, and a synthesis unit 144 b. Is provided with a line memory 148 for temporarily storing the color signal from one line. Therefore, the RGB signal of the pseudo pixel unit Ga2 is given to the RGB color signal generation unit 141 to generate color signals for the constituent elements R1, G1, and B1, and the RGB signal of the pseudo pixel unit Gb3. Is supplied to the BYe color signal generation unit 142 to generate color signals to be supplied to the constituent elements B1 and Ye1, respectively.

  Then, the weighted addition averaging unit 143 generates the color signal b3 for the component element B1 by performing weighted addition averaging on the color signals b1 and b2 of the component element B1 from the RGB signal generation unit 141 and the BYe signal generation unit 142, respectively. To do. The color signal for the component B1 weighted and averaged by the weighted average averaging unit 143 and the color signal for the component Ye1 obtained by the BYe color signal generation unit 142 are provided to the synthesis unit 144b. Further, the color signals for the constituent elements R1 and G1 obtained by the RGB color signal generation unit 141 are given to the synthesis unit 144a.

  The color signal of each of the constituent elements R1 and G1 is output from the combining unit 144a to the driver unit 15 in the order of R1 and G1, and the color signal of each of the constituent elements B1 and Ye1 is output from the combining unit 144b of Ye1 and B1. The data are sequentially output to the line memory 148. When the color signals of the constituent elements R1 and G1 corresponding to one row are output to the driver unit 15, the color signals of the constituent elements Ye1 and B1 corresponding to one row are stored in the line memory 148. Become.

  When the driver unit 15 outputs a horizontal scanning signal for the constituent elements R1 and G1 to emit light to the constituent elements R1 and G1 for one row in the display unit 16, the line memory 148 results in one row. The color signals of the constituent elements Ye1 and B1 are output. Therefore, the driver unit 15 outputs a horizontal scanning signal for the constituent elements Ye1 and B1, and the display unit 16 emits light to the constituent elements Ye1 and B1 for one row. By repeating such an operation, an image on the display unit 16 is reproduced.

<Fifth Embodiment>
A fifth embodiment of the present invention will be described with reference to the drawings. In the present embodiment, as in the fourth embodiment, one pixel unit is set by four constituent elements arranged in a matrix of 2 rows and 2 columns. FIG. 19 is a diagram showing the relationship between the arrangement of components in the display unit of the video display apparatus according to the present embodiment and the timing of sampling. FIG. 21 is a block diagram showing an internal configuration of the display signal generation unit 14 in the video display apparatus of the present embodiment.

  Also in the present embodiment, as in the fourth embodiment, the constituent elements R1, G1, B1, and Ye1 arranged in 2 rows and 2 columns are set to one pixel unit. In this embodiment, as shown in FIG. 19, two component elements R1 and Ye1 arranged in the horizontal direction and two component elements G1 and B1 arranged in the horizontal direction are arranged in the vertical direction, so that one pixel unit. Gx5 is configured. That is, the constituent elements R1 and Ye1 are arranged to repeat in the order of R1 and Ye1 in the horizontal direction in the odd rows, and the constituent elements G1 and B1 are arranged to repeat in the order of G1 and B1 in the even rows. .

  When each pixel unit Gx5 in the display unit 16 is configured in this way, two timings T10 and T11 are set for one pixel unit Gx5 as the timing for sampling the RGB signals in the sub-sampling unit 12. That is, based on the fact that the color signal Ye can be pseudo-replaced with R + G synthesized by the color signals R and G, the constituent elements R1, G1 and B1 are set as one pixel unit Ga3 and the constituent element B1 , Ye1 is set as one pixel unit Gb4 in a pseudo manner. Timings T10 and T11 corresponding to the positions of the pseudo pixel units Ga3 and Gb4 are set as sampling timings. At this time, the timing T10 is a timing corresponding to the center positions of the two constituent elements R1 and G1, and the timing T11 is a timing corresponding to the center positions of the constituent elements Ye1 and B1.

  As described above, when the timings T10 and T11 are set for each pixel unit Gx5, when each of the analog RGB signals as shown in FIG. 20A is input to the sub-sampling unit 12, the analog RGB signals are As shown in FIG. 20B, sampling is performed at timings T10 and T11 for each pixel unit Gx5. Then, the sampled analog RGB signal values are converted into digital data, and stored in the memory unit 13 as digital RGB signals of the pseudo pixel units Ga3 and Gb4, as in the fourth embodiment.

  In this embodiment, as shown in FIG. 21, the display signal generation unit 14 is different from the configuration of FIG. 18 in the fourth embodiment in the synthesis units 144c and 144d instead of the synthesis units 144a and 144b. Is provided. The RGB color signal generation unit 141 to which the RGB signal of the pseudo pixel unit Ga3 is given, the RGB signal of the pseudo pixel unit Gb4 to the BYe color signal generation unit 142, and the weighted addition averaging unit 143, respectively. The same operation as in the fourth embodiment is performed.

  At this time, the color signals for the constituent elements R1 and Ye1 obtained by the RGB color signal generation unit 141 and the BYe color signal generation unit 142 are provided to the synthesis unit 144c. Further, the color signal for the component B1 weighted and averaged by the weighted average averaging unit 143 and the color signal for each of the component G1 obtained by the RGB color signal generation unit 141 are provided to the combining unit 144d. The color signal of each of the constituent elements R1 and Ye1 is output from the combining unit 144c to the driver unit 15 in the order of R1 and Ye1, and the color signal of each of the constituent elements G1 and B1 is output from the combining unit 144d of G1 and B1. The data are sequentially output to the line memory 148.

  In the present embodiment, when the color signals of the constituent elements R1 and Ye1 corresponding to one row are output to the driver unit 15, the color signals of the constituent elements G1 and B1 corresponding to one row are stored in the line memory 148. The Rukoto. Therefore, the driver unit 15 outputs horizontal scanning signals for the constituent elements R1 and Ye1, and then outputs horizontal scanning signals for the constituent elements G1 and B1, thereby reproducing the video on the display unit 16.

<Sixth Embodiment>
A sixth embodiment of the present invention will be described with reference to the drawings. In the present embodiment, as in the fourth embodiment, one pixel unit is set by four constituent elements arranged in a matrix of 2 rows and 2 columns. FIG. 22 is a diagram illustrating the relationship between the arrangement of the constituent elements in the display unit of the video display apparatus according to the present embodiment and the timing at which sampling is performed. FIG. 24 is a block diagram showing an internal configuration of the display signal generation unit 14 in the video display apparatus of this embodiment.

  Also in this embodiment, as in the fourth and fifth embodiments, the constituent elements R1, G1, B1, and Ye1 arranged in 2 rows and 2 columns are set as a unit of one pixel. In the present embodiment, as shown in FIG. 24, two constituent elements R1, Ye1 arranged in the horizontal direction and two constituent elements G1, B1 arranged in the horizontal direction are arranged in the vertical direction, so that one pixel unit. Gx6a is configured, and two component elements G1 and B1 arranged in the horizontal direction and two component elements R1 and Ye1 arranged in the horizontal direction are arranged in the vertical direction to constitute one pixel unit Gx6b. That is, the constituent elements R1, Ye1, G1, and B1 are arranged to repeat in the order of R1, Ye1, G1, and B1 in the horizontal direction in the odd-numbered rows, and the constituent elements G1, B1, R1, and Ye1 are arranged in the even-numbered rows. Are arranged so as to repeat in the order of G1, B1, R1, and Ye1.

  Thus, when each pixel unit Gx6a, Gx6b in the display unit 16 is configured, the timing of performing sampling for the RGB signal in the sub-sampling unit 12 is the same as that in the fifth embodiment for each pixel unit Gx6a, Gx6b. Similarly, two timings T10 and T11 are set. That is, as in the fifth embodiment, the color signals Ye can be replaced with R + G synthesized by the color signals R and G in a pseudo manner, so that the constituent elements R1, G1, and B1 can be replaced with one pixel unit Ga3. In addition, the constituent elements B1 and Ye1 are set as one pixel unit Gb4 in a pseudo manner. Timings T10 and T11 corresponding to the positions of the pseudo pixel units Ga3 and Gb4 are set as sampling timings for the pixel units Gx6a and Gx6b, respectively.

  Then, as in the fifth embodiment, the sub-sampling unit 12 converts the analog RGB signals as shown in FIG. 23A for each pixel unit Gx6a, Gx6b, as shown in FIG. , T11. Digital RGB signals of the pseudo pixel units Ga3 and Gb4 obtained by this sampling operation are stored in the memory unit 13.

  In the present embodiment, as shown in FIG. 24, the display signal generation unit 14 is different from the configuration of FIG. 21 in the fifth embodiment in that the outputs of the synthesis units 144c and 144d, the line memory 148, and the driver 15 The switches SW1 and SW2 for switching the connection with the input are added. In addition, an RGB color signal generation unit 141 to which an RGB signal of the pseudo pixel unit Ga3 is given, an RGB signal of the pseudo pixel unit Gb4 is combined with the BYe color signal generation unit 142, and the weighted addition averaging unit 143. The units 144c and 144d each perform the same operation as in the fifth embodiment.

  Therefore, the color signals of the constituent elements R1 and Ye1 are output from the combining unit 144c in the order of R1 and Ye1, and the color signals of the constituent elements G1 and B1 are output from the combining unit 144d in the order of G1 and B1. . When the pixel unit Gx6a is processed in this way, the color signals of the constituent elements R1 and Ye1 from the synthesizing unit 144c are given to the driver 15 by the switch SW1, and the constituent elements from the synthesizing unit 144d are processed. The color signals of G1 and B1 are given to the line memory 148 by the switch SW2. When processing is performed on the pixel unit Gx6b, the color signals of the constituent elements R1 and Ye1 from the synthesizing unit 144c are given to the line memory 148 by the switch SW1, and the constituent elements G1 and B1 from the synthesizing unit 144d are respectively provided. Are supplied to the driver 15 by the switch SW2.

  In this embodiment, when the color signals of the component elements R1, Ye1, G1, and B1 are circulated and output in this way and the color signal for one row is output to the driver unit 15, the component elements G1, The color signals of B1, R1, and Ye1 are circulated and output, and the color signals for one row are stored in the line memory 148. Therefore, the driver unit 15 outputs the horizontal scanning signal for the row in which the constituent elements R1, Ye1, G1, and B1 circulate, and then outputs the horizontal scanning signal for the row in which the constituent elements G1, B1, R1, and Ye1 circulate. Thus, the video on the display unit 16 is reproduced.

<Seventh Embodiment>
A seventh embodiment of the present invention will be described with reference to the drawings. In the present embodiment, as in the fourth embodiment, one pixel unit is set by four constituent elements arranged in a matrix of 2 rows and 2 columns. FIG. 25 is a diagram illustrating the relationship between the arrangement of the constituent elements in the display unit of the video display apparatus according to the present embodiment and the timing at which sampling is performed. FIG. 27 is a block diagram showing an internal configuration of the display signal generation unit 14 in the video display apparatus of the present embodiment.

  As shown in FIG. 25, unlike the fourth embodiment, the display unit 16 of the video display device of the present embodiment has two components R1 and G1 arranged in the horizontal direction and two components arranged in the horizontal direction. By arranging the elements Cy1 and B1 in the vertical direction, one pixel unit Gx7 is configured. The constituent elements R1, G1, B1, and Cy1 are constituent elements corresponding to the color signals R (Red), G (Green), B (Blue), and Cy (Cyan), respectively. The constituent elements R1 and G1 are arranged to repeat in the order of R1 and G1 in the horizontal direction in the odd rows, and the constituent elements B1 and Cy1 are arranged to repeat in the order of Cy1 and B1 in the even rows. . Further, it is assumed that each color signal Cy can be replaced with the color signal Cy = G + B in a pseudo manner, as in the second embodiment.

  Thus, when each pixel unit Gx7 in the display unit 16 is configured, two timings T12 and T13 are set for one pixel unit Gx7 as timings for sampling the RGB signals in the sub-sampling unit 12. That is, based on the fact that the color signal Cy can be pseudo-replaced with G + B synthesized by the color signals G and B, the constituent elements R1, G1, and B1 are set as one pixel unit Ga4 in a pseudo manner, and the constituent element R1 , Cy1 is set in a pseudo manner as one pixel unit Gb5. Timings T13 and T12 corresponding to the positions of the pseudo pixel units Ga4 and Gb5 are set as sampling timings. At this time, the timing T12 is a timing corresponding to the center positions of the two constituent elements R1 and Cy1, and the timing T13 is a timing corresponding to the center positions of the constituent elements G1 and B1.

  Thus, when the timings T12 and T13 are set for each pixel unit Gx7, when each analog RGB signal as shown in FIG. 26A is input to the sub-sampling unit 12, the analog RGB signal is As shown in FIG. 26B, sampling is performed at timings T12 and T13 for each pixel unit Gx7. Then, the sampled analog RGB signal values are converted into digital data and stored in the memory unit 13 as digital RGB signals of the pseudo pixel units Ga4 and Gb5, as in the fourth embodiment.

  Then, the display signal generation unit 14 reads the digital RGB signal data of each of the pseudo pixel units Ga4 and Gb5 for each pixel unit Gx7. As shown in FIG. 27, the display signal generation unit 14 is provided with synthesis units 144e and 144f instead of the memory unit 146 and the synthesis unit 144 in the configuration of FIG. 12 in the second embodiment. The line memory 148 temporarily stores the color signal from the combining unit 144f for one row. Therefore, the RGB signal of the pseudo pixel unit Ga4 is given to the RGB color signal generation unit 141 to generate color signals for the constituent elements R1, G1, and B1, and the RGB signal of the pseudo pixel unit Gb5. Is supplied to the CyR color signal generation unit 145, and color signals to be supplied to the constituent elements R1 and Cy1 are generated.

  Then, the weighted addition averaging unit 147 generates the color signal r3 for the component element R1 by performing weighted addition averaging on the color signals r1 and r2 of the component element R1 from the RGB signal generation unit 141 and the CyR signal generation unit 145, respectively. To do. The color signal for the component element R1 weighted and averaged by the weighted addition averaging unit 147 and the color signal for the component element G1 obtained by the RGB color signal generation unit 141 are provided to the combining unit 144e. Further, the color signals for the constituent elements B1 and Cy1 obtained by the RGB color signal generation unit 141 and the CyR color signal generation unit 145 are given to the synthesis unit 144f.

  The color signal of each of the constituent elements R1 and G1 is output from the combining unit 144e to the driver unit 15 in the order of R1 and G1, and the color signal of each of the constituent elements Cy1 and B1 is output from the combining unit 144f of Cy1 and B1. The data are sequentially output to the line memory 148. When the color signals of the constituent elements R1 and G1 corresponding to one row are output to the driver unit 15, the color signals of the constituent elements Cy1 and B1 corresponding to one row are stored in the line memory 148. Become.

  When the driver unit 15 outputs a horizontal scanning signal for the constituent elements R1 and G1 to emit light to the constituent elements R1 and G1 for one row in the display unit 16, the line memory 148 results in one row. The color signals of the constituent elements Cy1 and B1 are output. Therefore, the driver unit 15 outputs a horizontal scanning signal for the constituent elements Cy1 and B1, and the display unit 16 emits light for the constituent elements Cy1 and B1 for one row. By repeating such an operation, an image on the display unit 16 is reproduced.

  As described above, in the fourth to seventh embodiments, as in the first embodiment, two pseudo pixel units are set for each pixel unit, and two timings are set as sampling timings. The Therefore, the pixel unit composed of four components in 2 rows and 2 columns in the fourth to seventh embodiments can also be divided into two pixel units in a pseudo manner. As a result, the resolution can be increased as compared with the case where the four constituent elements are in units of one pixel, and further, the color reproduction phenomenon can be prevented and sharpened for the reproduced video.

  In the fourth to seventh embodiments, the example in which the pixel unit is formed by the constituent elements of 2 rows and 2 columns is shown, but the arrangement of the constituent elements is not limited to these arrangements. Another arrangement may be used. At this time, the set pseudo pixel unit is configured by a plurality of adjacent constituent elements having the same RGB relationship. Then, the sampling timing is set to a timing corresponding to a position equivalent to a ratio at which the colors of the constituent elements constituting each pseudo pixel unit are combined.

  Further, when there are constituent elements arranged at positions where the respective pseudo pixel units are overlapped, the timing corresponding to the position equivalent to the ratio in which the colors of the constituent elements other than the constituent elements are combined is used as the sampling timing. Set. That is, the timing corresponding to the position where the color component added to RGB is installed and the timing corresponding to the position equivalent to the color added to the component R1, G1, B1 are sampling timings. Is set. Further, the color signals for the constituent elements in which the pseudo pixel units overlap are generated by weighted addition of the color signals obtained from the respective pseudo pixel units.

  In the first to seventh embodiments, the color signal for any one of the constituent elements R1 and B1 is weighted and averaged. However, the color signal obtained by the RGB color signal generation unit 141 is configured as it is. A color signal for either one of the elements R1 and B1 may be used and weighted averaging is not performed. Furthermore, although the display signal generation unit 14 has been described as being configured by functional blocks, it may be operated by a program corresponding to the functional blocks described above. Also, a plurality of programs corresponding to the arrangement of the constituent elements for each pixel unit are provided, and a program for setting the constituent elements confirmed in the display unit 16 is set to operate the sub-sampling unit 12 and the display signal generation unit 14. It does n’t matter.

  The video display device of the present invention can be applied to a video display device in which constituent elements of four or more colors that emit light based on digital color signals are used in units of pixels, and as the video display device, an LCD, a PDP, It can be applied to a display using organic EL (ElectroLuminescence) or the like.

These are block diagrams which show the internal structure of the video display apparatus in each embodiment of this invention. These are figures which show the relationship between the arrangement | sequence of the component in the display part of the video display apparatus of 1st Embodiment, and the timing which performs sampling. FIG. 4 is a diagram illustrating an example of an analog RGB signal. FIG. 4 is a diagram illustrating a digital RGB signal sampled by a sub-sampling unit. These are figures which show each data of component R1, G1, B1 obtained from the sampled digital RGB signal. These are figures which show each data of component B1, Ye1 obtained from the sampled digital RGB signal. These are block diagrams which show the internal structure of the signal generation part for a display in the video display apparatus of 1st Embodiment. These are figures which show the state of a signal when carrying out the weighted addition average of the color signal with respect to component B1. These are figures which show the state of each color signal of component R1, G1, B1, Ye1 after a synthesis | combination. These are figures which show the relationship between the arrangement | sequence of the component in the display part of the video display apparatus of 2nd Embodiment, and the timing which performs sampling. These are figures which show the state of the RGB signal before and behind the sampling by the subsampling part in the video display apparatus of 2nd Embodiment. These are block diagrams which show the internal structure of the signal generation part for a display in the video display apparatus of 2nd Embodiment. These are figures which show the relationship between the arrangement | sequence of the component in the display part of the video display apparatus of 3rd Embodiment, and the timing which performs sampling. These are figures which show the state of the RGB signal before and behind the sampling by the subsampling part in the video display apparatus of 3rd Embodiment. These are block diagrams which show the internal structure of the signal generation part for a display in the video display apparatus of 3rd Embodiment. These are figures which show the relationship between the arrangement | sequence of the component in the display part of the video display apparatus of 4th Embodiment, and the timing which performs sampling. These are figures which show the state of the RGB signal before and behind the sampling by the subsampling part in the video display apparatus of 4th Embodiment. These are block diagrams which show the internal structure of the signal generation part for a display in the video display apparatus of 4th Embodiment. These are figures which show the relationship between the arrangement | sequence of the component in the display part of the video display apparatus of 5th Embodiment, and the timing which performs sampling. These are the figures which show the state of the RGB signal before and behind the sampling by the subsampling part in the video display apparatus of 5th Embodiment. These are block diagrams which show the internal structure of the signal generation part for a display in the video display apparatus of 5th Embodiment. These are the figures which show the relationship between the arrangement | sequence of the component in the display part of the video display apparatus of 6th Embodiment, and the timing which performs sampling. These are figures which show the state of the RGB signal before and behind the sampling by the subsampling part in the video display apparatus of 6th Embodiment. These are block diagrams which show the internal structure of the signal generation part for a display in the video display apparatus of 6th Embodiment. These are figures which show the relationship between the arrangement | sequence of the component in the display part of the video display apparatus of 7th Embodiment, and the timing which performs sampling. These are the figures which show the state of the RGB signal before and behind the sampling by the subsampling part in the video display apparatus of 7th Embodiment. These are block diagrams which show the internal structure of the signal generation part for a display in the video display apparatus of 7th Embodiment.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 RGB matrix part 12 Subsampling part 13 Memory part 14 Display signal generation part 15 Driver part 16 Display part 17 Sampling control part

Claims (6)

A display color signal generation unit that generates n or more color signals that are four or more colors added with colors different from the specific three colors based on the specific three-color video signals, and n in accordance with the n colors In a video display device having a display unit in which one pixel unit is configured by the constituent elements of
The timing for each pixel unit for sampling the video signal is set to a first timing corresponding to an installation position of each of the additional colors added in addition to the specific three colors, and the additional color and color according to the specific three colors. Is set by a plurality of timings with a second timing corresponding to the equivalent position, and includes a sub-sampling unit that samples the video signal at the first and second timings,
The video display device, wherein the display color signal generation unit generates the n color signals based on the value of the signal sampled by the sub-sampling unit. When n colors are 4 colors,
The first timing is a timing corresponding to the added installation position of one color,
The video display device according to claim 1, wherein the second timing is a timing corresponding to a position corresponding to a ratio of the three specific colors that is equivalent to the added one color. When n colors are 5 colors,
The first timing is two timings corresponding to the added two color installation positions, respectively.
The video display according to claim 1, wherein the second timing is one timing corresponding to a position corresponding to a ratio of the specific three colors that is equivalent to a color obtained by combining the two added colors. apparatus. In the display color signal generation unit,
Generating a color signal for the additional color based on a value of the signal sampled at the first timing;
4. The video display device according to claim 1, wherein a color signal for the specific three colors is generated based on a value of a signal sampled at the second timing. 5. In the display color signal generation unit,
Generating a color signal for the additional color based on a value of the signal sampled at the first timing;
The color signal based on the value of the signal sampled at the first timing and the color signal based on the value of the signal sampled at the second timing are weighted and averaged to generate a color signal for the specific three colors. The video display device according to claim 1, wherein the video display device is a video display device. Based on the specific three-color video signal, an n-color signal having four or more colors added with colors different from the specific three colors is generated, and one pixel unit is formed by n component elements corresponding to the n colors. In a video display method for displaying a video by giving to a display unit constituted by:
The timing for each pixel unit for sampling the video signal is set to a first timing corresponding to an installation position of each of the additional colors added in addition to the specific three colors, and the additional color and color according to the specific three colors. Is set at a plurality of timings with a second timing corresponding to a position where the two are equivalent, and after sampling the video signal at the first and second timings, the n colors are selected based on the value of the sampled signal. A video display method characterized by generating a signal.

Images