摘要:
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.
摘要:
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 γ data of 2k bits. The apparatus further includes a γ data storage circuit capable of storing the plural γ data in the LUT creating circuit.
摘要:
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.
摘要:
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.
摘要:
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.
摘要:
An LCD device according to the present invention has: an LCD panel; an operation and correction circuit configured to perform a correction operation with respect to an input gray-scale data of a target frame image by using an arithmetic expression to generate an output gray-scale data; a data line driver configured to drive the LCD panel in accordance with the output gray-scale data; and a correction data calculation circuit configured to generate a correction data that specifies a relationship between the input gray-scale data and the output gray-scale data of the target frame image, depending on the input gray-scale data of the target frame image or an input gray-scale data of a precedent frame image followed by the target frame image. The operation and correction circuit determines coefficients of the arithmetic expression from the correction data.
摘要:
A controller driver includes a first compressor for compressing received image data to generate first compressed image data, a second compressor to generate second compressed image data, and an image memory capable of storing the second compressed image data of at least one frame. It also includes an overdrive processing unit for generating corrected image data where a tone value of the received image data is corrected from the first compressed image data or its expanded data and second compressed image data of one frame previous to the first compressed image data or its expanded data. The compression processing performed in the first compressor is the same as compression processing performed in the second compressor in compressing image data of one frame previous to the received image data.
摘要:
A display panel driver includes: a compression circuit, when receiving image data of N×M pixels of a target block, generating compressed image data corresponding to the target block by compressing the image data; an image memory storing the compressed image data; a decompression circuit generating decompressed image data by decompressing the compressed image data from the image memory; and a drive circuit driving a display panel in response to the decompressed image data. The compression circuit selects one of a plurality of compression methods based on a correlation between the image data of the N×M pixels, and generates the compressed image data by the selected compression method. The plurality of compression methods includes: a first method calculating a first value corresponding to image data of the N×M pixels and putting the first value in the compressed image data, a second method calculating a second value corresponding to image data of n pixels of the N×M pixels and putting the second value in the compressed image data, and a third method calculating a bit plane reducing data by performing a bit plane reduction process independently on image data of each of the N×M pixels and putting the bit plane reducing data in the compressed image data.
摘要:
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.
摘要:
A display device is provided with 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 adapted 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. The value of the output image data is identical to the corresponding value of the color-reduced image data when the LUT output value is a first value, while the value of the output image data is modified from the corresponding value of the color-reduced image data when the LUT output value is a second value different from the first value.