A system including a source display, externally updatable, an image compression algorithm database, a network connection, and a frame transfer engine. The algorithm database comprises a plurality of image compression algorithms. The frame transfer engine is configured to receive a plurality of updates made to the source display, store at least some of the updates in a queue, and select, based on a bandwidth of the network connection, a size of the update, and sizes and times of updates currently present in the queue, an image compression algorithm in the algorithm database for current transfer over the network connection.

To enable uncompressed RAW data to be appropriately transmitted from an imaging device to an external device. A transmission unit transmits uncompressed RAW data to an external device via a transmission path. In a case where the external device does not support the uncompressed RAW data, the control unit controls the transmission unit so as not to perform output processing for outputting the uncompressed RAW data to the transmission path. For example, the information reception unit receives identification information indicating that the external device supports the uncompressed RAW data from the external device via the transmission path.

A display device is provided, which includes an image buffer, a display module, and a display controller. The display controller is used for receiving an image signal from a host, and storing the image signal in the image buffer. In response to the display controller receiving a trigger signal, the display controller controls the display device to enter an image-rewinding mode. The display controller obtains a retrospective image that corresponds to a retrospective time point according to a user command, and plays the retrospective image on the display module.

A method of encoding a block of an array of data elements comprises selectively writing out an encoded version of the block either that is encoded using a first encoding scheme, which provides encoded blocks of non-fixed data size, or that is encoded using a second encoding scheme, which provides encoded blocks of fixed data size. The selection of which version of the encoded block to write out is based on the size of the encoded block when encoded using the first encoding scheme. This provides the potential for the encoded block that is written out to be compressed in a more superior manner using the first encoding scheme where possible, whilst also providing an encoded block that has a predictable maximum compressed size.

To enable a good HDR image or video coding technology, being able to yield high dynamic range images as well as low dynamic range images, we invented a method of encoding a high dynamic range image (M_HDR), comprising the steps of:

converting the high dynamic range image to an image of lower luminance dynamic range (LDR_o) by applying a) scaling the high dynamic range image to a predetermined scale of the luma axis such as [0,1], b) applying a sensitivity tone mapping which changes the brightnesses of pixel colors falling within at least a subrange comprising the darker colors in the high dynamic range image, c) applying a gamma function, and d) applying an arbitrary monotonically increasing function mapping the lumas resulting from performing the steps b and c to output lumas of the lower dynamic range image (LDR_o); and

outputting in an image signal (S_im) a codification of the pixel colors of the lower luminance dynamic range image (LDR_o), and

outputting in the image signal (S_im) values encoding the functional behavior of the above color conversions as metadata, or values for the inverse functions, which metadata allows to reconstruct a high dynamic range image (Rec_HDR) from the lower luminance dynamic range image (LDR_o).

A data processing system 30 includes a CPU 33, a GPU 34, a video processing engine (video engine) 35, a display controller 36 (or an image processing engine) and a memory controller 313 all having access to off-chip memory 314. A frame to be displayed is generated by, for example, being appropriately rendered by the GPU 34 or video engine 35. The display controller 36 (or the image processing engine) then performs display modifications, such as luminance compensation, on the frame to provide an output frame for display. The display controller 36 (or the image processing engine) also provides display modification information (such as determined luminance compensation parameters) to the GPU 33 and video engine 34. The display modification information is then used to modify the data that is generated for a frame to be displayed.

A method including receiving, by a companion device from an optical display, a distortion information associated with a geometric distortion associated with rendering an image on a display of the optical display, distorting, by the companion device, the image using the distortion information, preprocessing, by the companion device, the distorted image based on compression artifacts, compressing, by the companion device, the distorted image, and communicating, by the companion device, the compressed image to the optical display

An image display system is configured such that an image display device and an image processing device are connected to each other through a network. The image display device is provided with: an instruction information generation unit for generating instruction information pertaining to image-processing to be performed on an image input signal; an image signal transmission unit for transmitting the instruction information to the image processing device; a corrected signal reception unit for receiving a corrected image input signal obtained through image-processing performed by the image processing device on the basis of the instruction information; and a display signal output unit for outputting an image output signal based on the corrected image input signal, to an object where an image is to be displayed. The image processing device receives the image input signal connected through the network and performs image-processing on the image input signal according to the instruction information.

A display driving apparatus includes a compression module, a storing module, a reading control module and a decompression module. The compression module performs 1-bit compression on an input data signal to generate a 1-bit compressed data and non-black data and store them in the storing module. The non-black data includes color information of each non-black bit in the input data signal. The reading control module reads the 1-bit compressed data from the storing module and the decompression module performs 1-bit decompression on the 1-bit compressed data to generate an output data signal. When the decompression module performs 1-bit decompression, the decompression module determines whether each bit of the 1-bit compressed data corresponds to black. If yes, the bit is displayed in black; if no, the reading control module reads a color corresponding to the bit from the non-black data stored in the storing module and the bit is displayed in the color.

A display device which supports a panel self refresh (“PSR”) mode includes a source unit and a synchronizing unit, and a signal is transmitted between the source unit and the synchronizing unit through an interface. The source unit determines on/off of the PSR mode in response to a PSR setting value, and additionally determines whether to activate the PSR mode in response to luminance information.