Abstract: A color adjustment circuit includes: a correction processing circuit configured to generate an output image data by performing color adjustment correction on an input image data; and a correction factor calculation circuit configured to calculate correction factors used for the color adjustment correction. The correction factor calculation circuit calculates a white color distance, a complementary color distance, and an elementary color distance and calculates the correction factors based on the white color distance, the complementary color distance and the elementary color distance. The correction factors are calculated based on: white point correction parameters, top correction parameters, and intermediate correction parameters.

Abstract: An image compression device includes: a first compression processing circuit configured to generate a first compressed image data by performing a first block compression process on an image data and a dither value generator circuit. When the first compressed image data associated with a compression target block is generated, the dither value generator circuit is configured to generate at least one dither value in response to block coordinates indicating a position of the compression target block in an image and the first compression processing circuit is configured to perform a quantization process using the at least one dither value in the first block compression process.

Abstract: Provided is a color adjustment method for a display apparatus. The color adjustment method includes: measuring first luminance coordinate data indicating a luminance and color coordinates of a color displayed on a display device when image data corresponding to a white point is supplied to a drive circuitry; measuring second luminance coordinate data indicating luminances and color coordinates of colors displayed on the display device when image data corresponding to the white color of intermediate grayscale values are supplied to the drive circuitry; measuring third luminance coordinate data indicating a luminance and color coordinates of a color displayed on the display device for each of R, G and B elementary color points when image data corresponding to each of the R, G and B elementary color points is supplied to the drive circuitry; and calculating correction parameters based on the first to third luminance coordinate data.

Abstract: An image processing apparatus includes: a first circuit which calculates values f(RPi), f(GPi) and f(BPi) by applying a function f(x) to an R grayscale value RR, a G grayscale value GPi and a B grayscale value BPi of each pixel i of a first image; a second circuit which calculates values f(RQi), f(GQi) and f(BQi)i) by applying the function f(x) to an R grayscale value RQi, a G grayscale value GQi and a B grayscale value BQi of each pixel i of a second image; and a similarity calculation circuit which calculates a degree of similarity between the first and second images depending on |f(RPi)-f(RQi)|, |f(GPi)-|f(GQi)| and |f(BPi)-f(BQi)| associated with each pixel i of the first and second images. The function f(x) is a convex function monotonically non-decreasing in the domain of definition.

Abstract: A display device includes a display panel including a display region and a driver driving each pixel of the display region in response to input image data. The driver calculates area characterization data indicating feature quantities of an image displayed in each of areas defined in the display region for each of the areas, based on the input image data and generates pixel-specific characterization data associated with each pixel by applying filtering to the area characterization data associated with the area in which each pixel is located and with areas adjacent to the area in which each pixel is located. The driver generates output image data associated with each pixel by performing a correction on the input image data associated with each pixel in response to the pixel-specific characterization data associated with each pixel and drives each pixel in response to the output image data associated with each pixel.

Abstract: A display device including a plurality of pixels including a plurality of sub-pixels respectively corresponding to different colors, and a plurality of source lines, a driver configured to drive the source lines; and a control unit configured to compress image data showing the level of the sub-pixel and generate compression data, and supply transfer data containing the compression data to the driver. The control unit includes a first sorter circuit configured to perform a first sorting process to sort data contained in the image data in at least one of either a time sequence or a spatial sequence, and a compression circuit to perform compression processing on the first sorted image data output from the sorter circuit to generate the compression data. The compression processing performs different processes on the image data of the sub-pixels corresponding to different colors.

Abstract: A data transmission system for a display device, the data transmission system comprising: an encoder having at least one translation table, encoding m bits of a data into n bits of a data on the basis of the translation table; a parallel-to-serial converter; a clock recovery circuit for recovering a clock from the data encoded and serialized; a serial-to-parallel converter for decoding the n bits of the encoded data to the m bits of the data; and an output driver for outputting a gray scale voltage, wherein an amplitude of the gray scale voltage is determined according to a value of the m bit of the data, and, wherein in the translation table, a larger the amplitude of the gray scale voltage of a bit pattern in 2m pieces of bit patterns of the m bits of the data, a larger the data change index of the bit pattern.

Abstract: A display apparatus includes: a display device; a display device driver which drives the display device; a compression section adapted to an operation of generating compression data by compression processing performed on image data; and a transmission section which, when receiving compressed data from the compression section, transmits the compressed data to the display device driver by using a serial data signal. The compression section performs the compression processing with a data compression ratio selected in response to a frame rate with which the display device driver drives the display device. The display device driver receives the serial data signal from the transmission section, generates decompressed data by decompressing the compressed data transmitted by the serial data signal, and drives the display device in response to the decompressed data.

Abstract: A display device includes an encoder having at least one translation table, and encoding m (m is a natural number) bits of a data to n (n is a natural number and n>m) bits of a data on a basis of the at least one translation table; a clock recovery circuit configured to recover a clock from the data encoded by the encoder; a decoder configured to decode the n bits of the encoded data to the m bits of the data in accordance with the clock recovered by the clock recovery circuit; an output driver configured to output a voltage in accordance with the data decoded by the decoder; and a display element having a pixel applied with the voltage.

Abstract: A display panel driver includes first and second scaler circuits and a pixel data feeding section which feeds to the first scaler circuit first divisional image pixel data corresponding to a first divisional image and feeds to the second scaler circuit second divisional image pixel data corresponding to a second divisional image. The pixel data feeding section also feeds to the first scaler circuit first boundary pixel data corresponding to pixels in a portion of the second divisional image, adjacent to the first divisional image and feeds to the second scaler circuit second boundary pixel data corresponding to pixels in a portion of the first divisional image, adjacent to the second divisional image. The first scaler circuit performs image scaling on the basis of the first divisional image pixel data and the first boundary pixel data and the second scaler circuit performs image scaling on the basis of the second divisional pixel image data and the second boundary pixel data.

Abstract: An image data transfer system includes a receiver and a transmitter configured to sequentially receive compressed image data and sequentially transmit transmission data corresponding to the compressed image data to the receiver. The transmitter is configured to, in transmitting a specific transmission data, perform data comparison of bits of a compressed image body data of a specific compressed image data with bits of a previous transmission data transmitted over signal lines allocated to the compressed image body data, incorporate the compressed image body data of the specific compressed image data or the bit-inverted data corresponding thereto into the specific transmission data, in response to the result of the data comparison, and incorporate the compression code of the specific compressed image data into the specific transmission data independently of the result of the data comparison.

Abstract: A display control circuit of a display performs generation of overdrive processed data and detection of a proper direction of overdriving from current frame uncompressed compressed data obtained by performing compression processing and uncompression processing on compressed data corresponding to image data of a current frame, and previous frame uncompressed compressed data obtained by performing the compression processing and the uncompression processing on image data of a previous frame, and generates post-correction overdrive processed data by correcting the overdrive processed data according to the detected proper direction. The display control circuit transmits post-correction compressed data obtained by compressing the post-correction overdrive processed data to a driver as transfer compressed data.

Abstract: An image processing apparatus includes a reference value calculating section configured to generate a value that is a weighted average of values of R data, G data, and B data of original RGB data as a reference value. Regarding each of color data such as the R data, the G data, and the B data, a value is calculated that is coincident with a value obtained by adding the value of the color data of the original RGB data to a product of a difference obtained by subtracting the reference value from the value of the color data of the original RGB data and a predetermined coefficient, as a value of the color data of RGB data after saturation expansion.

Abstract: A display apparatus includes: a display device; a display device driver which drives the display device; a compression section adapted to an operation of generating compression data by compression processing performed on image data; and a transmission section which, when receiving compressed data from the compression section, transmits the compressed data to the display device driver by using a serial data signal. The compression section performs the compression processing with a data compression ratio selected in response to a frame rate with which the display device driver drives the display device. The display device driver receives the serial data signal from the transmission section, generates decompressed data by decompressing the compressed data transmitted by the serial data signal, and drives the display device in response to the decompressed data.

Abstract: A display device includes a display device, a driver to drive the source line of the display device, and a control unit to compress image data and generate compression data, and supply transfer data containing compression data to the driver. The control unit includes a first sorter circuit to perform a sorting process on image data, and a compression circuit to perform a compression processing on a first sorted image data output from the sorter circuit and generate compression data. The compression processing performs different processing on image data of sub-pixels corresponding to different colors. The driver includes a decompression circuit to decompress compression data and generate decompression data, a second sorter circuit to perform the sorting process on the image data and generate a second sorted image data, and a display drive circuit to drive a source line in response to the second sorted image data.

Abstract: Techniques for displaying a quality-improved image with reduced power consumption are provided. In one embodiment, a display panel driver is provided that includes a dithering section configured to receive first m-bit image data and configured to generate second image data by performing dithering on the first image data with n-bit dither values each selected from elements of a dither table, and a driver circuit configured to drive the source lines of a display panel in response to the second image data. In generating the second image data corresponding to first pixels belonging to a first pixel column, the dither values are selected from elements in a first column of the dither table, while the second image data corresponding to second pixels belonging to a second pixel column adjacent to the first pixel column, the dither values are selected from elements in a second column of the dither table.

Abstract: A display device includes a display panel and a driver. The driver generates APL-calculation image data corresponding to an APL-calculation luminance image through an APL-calculation filtering process on the input usage data, calculates area characterization data including first APL data of each area in the APL-calculation luminance image and calculates second APL data depending on the position of each pixel and the first APL data of the area characterization data associated with the area in which each pixel is located and with the adjacent areas to generate pixel-specific characterization data including the second APL data. The driver generates output image data on the basis of the second APL data of the pixel-specific image data and drives each pixel in response to the output image data. The APL-calculating filtering process involves setting a luminance value of the target pixel in the APL-calculation luminance image to a specific APL-calculation alternative luminance value.

Abstract: A display panel driver includes first and second scaler circuits and a pixel data feeding section which feeds to the first scaler circuit first divisional image pixel data corresponding to a first divisional image and feeds to the second scaler circuit second divisional image pixel data corresponding to a second divisional image. The pixel data feeding section also feeds to the first scaler circuit first boundary pixel data corresponding to pixels in a portion of the second divisional image, adjacent to the first divisional image and feeds to the second scaler circuit second boundary pixel data corresponding to pixels in a portion of the first divisional image, adjacent to the second divisional image. The first scaler circuit performs image scaling on the basis of the first divisional image pixel data and the first boundary pixel data and the second scaler circuit performs image scaling on the basis of the second divisional pixel image data and the second boundary pixel data.

Abstract: An image processing circuit includes a scaling processing section having interpolation coefficient inputs, an interpolation coefficient rearrangement section and an interpolation coefficient feeding section. The interpolation coefficient feeding section feeds first interpolation coefficients to the interpolation coefficient rearrangement section. The interpolation coefficient rearrangement section is configured to feed interpolation coefficients selected from the first interpolation coefficients and second interpolation coefficients obtained by subtracting the first interpolation coefficients from a predetermined value, respectively, to the respective interpolation coefficient inputs of the scaling processing section in response to coordinates of a target pixel of the output image.

Abstract: A display device is provided with a display panel; a correction circuit which performs gamma correction on target image data in response to correction data specifying a gamma curve; and a driver circuit driving the display panel in response to gamma-corrected data received from the correction circuit. The correction circuit is configured to perform approximate gamma correction in accordance with a correction expression in which the target image data is defined as a variable of the correction expression and coefficients of the same are determined on the correction data, and to modify the correction data in response to target image data associated with the target pixel of the gamma correction and the pixel adjacent to the target pixel.