A display device (10) includes a light source (19), a light guide plate (18), a display panel (11), a panel driving unit that outputs, to the display panel (11), a signal for controlling a transmittance of each pixel of the display panel (11), and a light source driving unit (16). Light can pass through a back surface of the light guide plate (18), which is a surface opposed to the emission surface of the light guide plate (18). The light source driving unit (16) drives the light source (19) based on the lighting control data. In a case where an image is displayed when the light source (19) is in ON state, the display panel (11) displays a color image, by controlling, pixel by pixel, a transmittance of light that passes from the light source (19) through the emission surface of the light guide plate. In a case where an image is displayed when the light source (19) is in OFF state, the display panel (11) displays a transmitted light image that includes a transmitting region through which the back of the display device (10) can be seen, by controlling, pixel by pixel, a transmittance of light that passes through the back surface of the light guide plate (18) and is incident on the display panel (11).

The present application discloses a novel algorithm to convert medical hyperspectral images (MHSI) into RGB (RedBlueGreen) images in different medical conditions by making use of the three spectral bands (Red, Green and Blue) of the MHSI and mapping them into Red, Green and Blue components for visualization of hyperspectral images.

Aspects presented herein relate to methods and devices for graphics processing including an apparatus, e.g., client device or a server. The apparatus may receive, from a server, a plurality of data packets corresponding to data for each of a plurality of frames associated with at least one application. The apparatus may also convert the plurality of data packets to content associated with the data for each of the plurality of frames, the content including at least one of monochrome color content or a luminance component. Further, the apparatus may perform a color space conversion on the content associated with the data for each of the plurality of frames, the color space conversion adding at least one chrominance plane to the content. The apparatus may also display, upon performing the color space conversion, the content associated with the data for each of the plurality of frames.

In the 1.sup.st case, which is the case of driving a color display panel, pieces of color image data corresponding to 1.sup.st to 3.sup.rd colors are received in parallel, and in a horizontal scan period, pixels connected to i.sup.th to (i+2).sup.th gate lines from among 1.sup.st to n.sup.th gate lines are driven according to the pieces of color image data corresponding to the 1.sup.st to 3.sup.rd colors. In the 2.sup.nd case, which is the case of driving a monochrome display panel, pieces of monochrome image data (DM1[7:0] to DM3[7:0]) for three horizontal scan lines are received in parallel, and in a horizontal scan period, pixels connected to j.sup.th to (j+2).sup.th gate lines from among 1.sup.st to m.sup.th gate lines (gate lines G1 to G960) are driven according to the pieces of monochrome image data (DM1[7:0] to DM3[7:0]).

The present invention provides a driving circuit for driving a color display to display black-and-white/grayscale images and comprises a data conversion circuit and a driver. The data conversion circuit receives input data transmitted by a microprocessor. The format of the input data is a black-and-white/grayscale format. The data conversion circuit converts the input data for producing output data. The format of the output data is a color format. The driver receives the output data and drives the color display to display the black-and-white/grayscale image. The driving circuit will convert the input data transmitted by the microprocessor with limited transmission capability and produce color output data for driving the color display to display the black-and-white/grayscale image. Accordingly, by using the driving circuit according to the present invention, an electronic device with limited transmission capability can work with the color display to display black-and-white/grayscale images.

Methods, devices, and computer-program products are provided for adding data to a digital video signal in a visually imperceptible manner. For example, a region of pixels can be identified in a video frame, and one or more pixel characteristics of the region of pixels can be determined. Based on the one or more pixel characteristics of the region of pixels, at least one pixel characteristic of a subset of pixels from the region of pixels can be modified in order to encode a set of data into the region of pixels. An output frame can be provided that includes the modified at least one pixel characteristics for the subset of pixels.

A conversion device for converting black-and-white or grayscale frames for a color display, and an electronic device and a color display device using the conversion device are disclosed. The conversion device includes a plurality of hardware circuits electrically connected to one another for receiving an input data provided by a control circuit. The input data includes a control signal, a string signal, a number signal or a symbol signal and the hardware circuits draw a color frame according to the input data to generate a color frame data for the color display; or alternatively, the input data includes a plurality of pixel signals of a black-and-white or grayscale frame, the hardware circuits convert the input data into a color frame data for the color display, and no input clock or reference clock for adjusting an output rate of the color frame data is received or generated by the conversion device.

A method for transmitting a monochrome digital image from a digital image source connected to a monochrome scrZeen by a transmission interface including a plurality of transmission channels, the monochrome image including a plurality of image pixels, the monochrome screen including a plurality of display pixels, the method including dividing the image pixels into a plurality of pixel groups; successively transmitting the pixel groups from the digital image source to the monochrome screen via the transmission interface, the image pixels of each group of pixels being transmitted in parallel via the transmission channels; assigning each image pixel received by the monochrome screen to a corresponding display pixel in such a way as to reconstruct the digital image on the monochrome screen.

A method for identifying a display current includes: acquiring grayscales of pixels in a to-be-displayed image, where the grayscale of each pixel includes grayscales of a plurality of color channels; calculating an average grayscale of a same color channel of all pixels in the to-be-displayed image; identifying a current value of each color channel and a current offset value of each color channel according to the average grayscale of each color channel, where the current offset value represents a difference between a display current value of a nonmonochromatic image and a display current sum of monochromatic images corresponding to the nonmonochromatic image; and calculating a display current of the to-be-displayed image based on the current value and the current offset value of each color channel.

Provided is a display brightness compensation method including: setting an aging grayscale of a monochrome pixel of each of n test display panels; setting m test grayscales of the monochrome pixel; during a time period, illuminating the aging grayscale of the monochrome pixel, periodically illuminating each test grayscale of the monochrome pixel, and periodically obtaining a test display brightness of the monochrome pixel at the test grayscale at the aging grayscale; calculating a brightness-time characteristic of the monochrome pixel at each of the m test grayscales at the aging grayscale; and compensating an actual display brightness of a monochrome pixel of a target display panel at a current display moment based on the brightness-time characteristic. Both m and n are positive integers greater than or equal to 2. The monochrome pixels of any two test display panels have different aging grayscales.