Abstract: A display control apparatus according to an embodiment of the present invention includes: a grayscale converting circuit for converting input image data to output image data using a look-up table showing a correspondence between input image data of i bits and output image data of k bits larger than the i bits; and an LUT creating circuit for creating the look-up table based on ? data of 2k bits. The apparatus further includes a ? data storage circuit capable of storing the plural ? data in the LUT creating circuit.

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: A display panel driver includes a color reducing circuit and a driving section. The driving section is configured to drive a first pixel and a second pixel. If a second input image data and a third input image data corresponding to the second pixel are supplied as an image data of a second image display format, then the color reducing circuit generates a third color reduction image data and a fourth color reduction image data. If the first input image data is supplied as the image data of the first image display format, then the first selector selects the third error value, and if the second input image data and the third input image data are supplied as the image data of the second image display format, then the first selector selects the second error value.

Abstract: A display device is provided with a display panel; first to n-th cascade-connected drivers (n being an integer of two or more); a controller transmitting compressed image data to the first driver. The i-th driver of the first to n-th drivers includes a drive circuitry driving the display panel; a first bus adapted to data transfer to the (i+1)-th driver of the first to n-th drivers; a second bus adapted to data transfer to the driver circuitry; and a decompression section receiving the compressed image data from the (i?1)-th driver of the first to n-th drivers or the controller. The decompression section of the i-th driver transfers the received compressed image data to the (i+1)-th driver through the first bus thereof, when the received compressed image data are not associated with the i-th driver.

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: An encoder includes an encoding unit that performs encoding according to a predetermined encoding method, a production unit that produces a special code which is not stipulated in the predetermined encoding method and which exhibits a higher bit change rate than that produced according to the predetermined encoding method does, and an encoding output unit that, if input data items which have not been encoded by the encoding unit are identical to each other, outputs encoded data into which a preceding one of the input data items is encoded by the encoding unit, and outputs a special code as encoded data, into which the succeeding one of the input data items is encoded, successively to the encoded data.

Abstract: A display panel driver includes a color reducing circuit and a driving section. The driving section is configured to drive a first pixel and a second pixel. If a second input image data and a third input image data corresponding to the second pixel are supplied as an image data of a second image display format, then the color reducing circuit generates a third color reduction image data and a fourth color reduction image data. If the first input image data is supplied as the image data of the first image display format, then the first selector selects the third error value, and if the second input image data and the third input image data are supplied as the image data of the second image display format, then the first selector selects the second error value.

Abstract: A control driver for a liquid crystal display panel includes: an operation circuit, an LUT (Look-up Table), and a linear interpolation D/A converter. The operation circuit performs a certain operation on input image data to generate operation data, and outputs higher order bit data and lower order bit data of the operation data. The LUT includes a V-T (Voltage-Transmittance) characteristic of the liquid crystal display panel, and outputs first output data and second output data as display data based on the higher order bit data and the V-T characteristic. The linear interpolation D/A converter performs an linear interpolation operation and D/A conversion to generate output voltage supplied to the liquid crystal display panel in response to the first output data, the second output data and the lower order bit data.

Abstract: A display panel driver includes a compression circuit configured to, when receiving image data of a plurality of pixels of a target block, generate compressed image data corresponding to the target block by compressing the image data, an image memory configured to store the compressed image data, a decompression circuit configured to generate decompressed image data by decompressing the compressed image data reading from the image memory, and a drive circuit configured to drive a display panel in response to the decompressed image data. The number of bits of the compression type recognition bit of the compressed image data becomes low, when the correlation between the image data of the plurality of pixels becomes low.

Abstract: Disclosed herewith a liquid crystal display apparatus, which includes a liquid crystal display panel that employs the delta arrangement; a subtractive color processing circuit that carries out a subtractive color processing for input image data, thereby generating subtractive color image data; and data line driving circuit that drives the liquid crystal display panel in response to the subtractive color image data. The subtractive color processing circuit carries out a weighting processing that increases or decreases the subtractive color image data according to a line that includes a sub-pixel to be subjected to a subtractive color processing, then carries out an error diffusion processing for the result of the weighting processing, thereby generating subtractive color image data. The subtractive color processing circuit carries out the weighting processing so as to increase the subtractive color image data corresponding to a line and decrease the subtractive color image data corresponding to another line.

Abstract: A display device is provided with a display panel, a backlight which illuminates the display panel, and a backlight brightness controller controlling a brightness of the backlight so that the brightness of the backlight is variable in the middle of each frame period.

Abstract: A display apparatus includes a display panel; and a display panel driver configured to drive signal lines of the display panel. The display panel driver includes: a color reducing circuit configured to be possible to generate a first color reduction image data from a first input image data by executing an error diffusion process by using a first error value, and to generate a second color reduction image data from the first input image data by executing the error diffusion process by using a second error value which is different from the first error value; and a driving section configured to drive a first pixel positioned on a horizontal line of the display panel in response to the first color reduction image data, and drive a second pixel positioned on the horizontal line and adjacent to a the first pixel in a horizontal direction, in response to the second color reduction image data.

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: A display device is provided with a display panel; and a display panel driver driving the display panel in response to externally-provided image data. The display panel driver includes a display memory for storing the image data, and is configured to perform overdrive processing on the image data read from the display memory. The display panel driver includes an overdrive processing control circuit detecting writing of the image data into the display memory to control operation and halt of a circuit used for the overdrive processing.

Abstract: A data transmission system for a display device, which is an mBnB encoding system encoding a signal of m (m is a natural number) bits into a signal of n (n is a natural number and n>m) bits on the basis of a certain translation table to be transmitted thereafter, the system including: an output driver of outputting a gray scale voltage in accordance with the data decoded at a receiver side, in which in the translation table, a bit pattern with a larger data change index from among 2n pieces of bit patterns of the n bits of the data is assigned to a bit pattern with a larger amplitude of the gray scale voltage from among 2m pieces of bit patterns of the m bits of the data.

Abstract: A display device is provided with a display panel; and a display panel driver driving the display panel in response to externally-provided image data. The display panel driver includes a display memory for storing the image data, and is configured to perform overdrive processing on the image data read from the display memory. The display panel driver includes an overdrive processing control circuit detecting writing of the image data into the display memory to control operation and halt of a circuit used for the overdrive processing.

Abstract: A display device includes a display panel, an environmental sensor, a correction circuit and a driving circuit. The correction circuit is configured to generate a corrected gray-scale data on the basis of input gray-scale data. The driving circuit is configured to drive the display panel in response to the corrected gray-scale data. The correction circuit generates the corrected gray-scale data by executing a correction using a polynomial in which the input gray-scale data are used as variables. Coefficients of the polynomial are changed in response to an output signal of the environmental sensor.

Abstract: A display device includes a display panel and a controller driver. The controller driver includes: a preceding image processing stage performing color-reduction processing on input image data to generate color-reduced image data; a memory; a latter image processing stage to perform modification processing on the color-reduced image data received from the memory to generate output image data; and a driver circuit driving the display panel in response to the output image data. The latter image processing stage is provided with a counter generating a counter value; a binary LUT outputting an LUT output value in response to the counter value and coordinates of a target pixel selected from the plurality of pixels; and a selector section generating the output image data from the color-reduced image data in response to the LUT output value. The bit width of the output image data is identical to that of the color-reduced image data.

Abstract: A display panel driver includes a compression circuit configured to, when receiving image data of a plurality of pixels of a target block, generate compressed image data corresponding to the target block by compressing the image data, an image memory configured to store the compressed image data, a decompression circuit configured to generate decompressed image data by decompressing the compressed image data reading from the image memory, and a drive circuit configured to drive a display panel in response to the decompressed image data. The number of bits of the compression type recognition bit of the compressed image data becomes low, when the correlation between the image data of the plurality of pixels becomes low.

Abstract: A controller/driver is composed of a work memory, a graphic engine, a display memory, and a driver circuit. The graphic engine converts externally received image data into first bitmap data, and stores the first bitmap data in the work memory. The display memory receives and stores second bitmap data developed from the first bitmap data stored in the work memory. The driver circuit drives a display panel in response to the second bitmap data received from the display memory.