Abstract: A device (100, 200, 300, 400, 500) including an ambient image light source (110, 210, 310) and a stacked plurality of ambient imaging light guides (120, 220, 320) The ambient image light source (110, 210, 310) is arranged to couple light into the stacked light guides (120, 220, 320). The stacked light guides (120, 220, 320) are arranged to couple out corresponding ambient image light portions onto a reflective surface (130, 230). The stacked light guides (120, 220, 320) may be arranged to provide the ambient image light portions extending outward from the device (100, 200, 300, 400, 500) such that a first one of the ambient image light portions extends substantially outward from a second one of the ambient image light portions. The second one of the ambient image light portions may be projected closer to the device (100, 200, 300, 400, 500) and may be projected to reflect brighter than the first one of the ambient image light portions.

Abstract: A method of gamut mapping maps an input image composed of pixels and having an input gamut (IG) defined by input RGB primaries (Ri, Gi, Bi) to a reproduction gamut (RG) defined by reproduction RGB primaries (Ro, Go, Bo). The reproduction gamut (RG) is narrower than the input gamut (IG). An input signal (RGBin) defined with respect to the input RGB primaries (Ri, Gi, Bi) is color transformed (1) into a transformed signal (RGBt) defined with respect to the reproduction RGB primaries (Ro, Go, Bo), whereby color information of the pixels (P1, P2, P3) within the reproduction gamut (RG) is preserved. Scaling factors (SFi) indicating a distance between on the one hand pixels (P1, P2, P3) of the transformed signal (RGBt) which are outside the reproduction gamut (RG), and on the other hand an edge of the reproduction gamut (RG) are determined (2).

Abstract: Disclosed are further improvements of AmbiLight Displaying Arrangement, a lighting or illumination system that has been introduced to enhance viewing experience. This is achieved by providing light sources (20) that create multiple colors next to at least one side of the screen (10) of the display device or arrangement, each of the multiple colors being 5 adapted to the video contents at a spatially corresponding region (50) of the screen (10). In one embodiment the lighting or illumination system can have an improved construction wherein a reflector (60) has a window section (65) enabling the light from the light sources (20) to be split into two. Half or more of the light is directed to the background (30) of the display device and half or less of the light is directed to the bezel diffuser (70), i.e. to the 10 front of the display device.

Abstract: A display system providing an enhanced viewing experience is provided. The system enables having backlighting colors fast adapted to the screen content while at the same time also having a relaxed viewing experience because the luminance slowly changes over time. A method and a computer-readable medium are also provided.

Abstract: The novel method of electronic color image processing comprises: inputting an image; obtaining a color (A) based on colors present in at least a first part of the image; and changing a saturation correlate (S2) defined with respect to the color (A) for at least a second part of the image. This allows for better quality saturation modification on a larger number of possible input images.

Abstract: A display control system (11) comprises an input (12) for receiving an image to be displayed by means of a backlight (2) and a transmissive panel (3). A backlight controller (5) provides different colors or luminances for causing the backlight (2) to sequentially apply the different colors or luminances to the transmissive panel (3) in time-sequential sub-fields of the image. A transmissive panel controller (6) provides transmittivities for causing the transmissive panel (3) to sequentially apply the transmittivities to the transmissive panel in the time-sequential sub-fields of the image for displaying the image. The transmissive panel controller (6) selects a transmittivity based on a predetermined amount of off-axis gamma distortion of the transmissive panel.

Abstract: A color gamut mapping maps an input image signal which has input pixel colors defined by an input luminance and an input chromaticity into a mapped image signal which has corresponding mapped pixel colors defined by a mapped luminance and a mapped chromaticity for a display. The input pixel colors lie within the input color gamut different than the display color gamut. The desired mapped luminance may be retrieved by looking up stored desired luminance values in a look-up table at the mapped chromaticity, or by calculating a relative to white luminance, or a luminance decrease, etc.

Abstract: An apparatus for enhancing at least a region of an input picture having input pixel values enabling a reduction of quantization banding artifacts including an estimation unit arranged to estimate a quantization precision of at least the region of the input picture, a pattern analysis unit arranged to determine positions in the input picture of changes in input pixel value of less than or equal to the quantization precision, and to output analysis information representing the positions, and an adaptive filter, arranged to calculate an output picture corresponding to at least the region of the input picture, comprising output pixels being determined on the basis of adaptive combinations of input pixels, and arranged to determine the adaptive combinations in dependence on the analysis information.

Abstract: A method converts an input image signal (IS) into a drive signal (DS) for driving sub-pixels (SP) of a display device (DD) comprising display pixels (DPI) having at least two sub-pixel groups (SG1, SG2) being able to contribute to luminance information displayed. The conversion comprises a multi-primary conversion (MPC) which receives the input image signal (IS) and which is performed under a constraint (CO). The constraint (CO) is determined (CD) by substantially matching local display luminances (DL1, DL2; DLD) associated with the at least two sub-pixel groups (SG1, SG2) with corresponding local input luminances (L1, L2; LD) of input pixels (IP) of the input image signal (IS), thereby obtaining a display luminance pattern defined by the display pixels (DPI) corresponding to an input luminance pattern defined by the input pixels (IP) associated with the display pixels (DPI).

Abstract: A color display device, a drive circuit for a color display device, a method, a signal and a computer-readable medium for reducing electro-optical cross talk that occurs in a display that is operated in Spectrum Sequential mode is disclosed. The invention eliminates annoying visible artifacts, such as contouring, noise, or color deviation, which normally are introduced by this cross talk by compensating for the cross talk. According to embodiments of the invention, a drive signal (R?,G?,B?) to drive picture elements of the display is altered in video processing circuitry (MPC, XTC, SC) and/or software, in dependence on one or more properties of different spectra from a light source (23, 24) in the display. The invention is implemented with little extra effort and cost in known LCD displays.

Abstract: An image display apparatus including a display device for displaying an image by emission of display light in a first direction; a scattering layer disposed in front of the display device, for scattering at least a portion of ambient light; a transparent plate-shaped light source, arranged parallel to the scattering layer and being optically coupled to the scattering layer. The plate-shaped light source may be a passive light source, in which case at least one light source is arranged along an edge of the plate-shaped light source. When the display device is ON, the scattering layer and the plate-shaped light source are transparent. When the display device is OFF, the scattering layer is scattering and the plate-shaped light source is ON.

Abstract: The invention relates to a display apparatus with a display unit, having means for background lighting at the back of the display apparatus. According to the invention, the means for background lighting comprise two illumination units being provided at the right-hand and left-hand of the display apparatus, said illumination units being formed as substantially vertically positioned, longitudinal light guides comprising means for coupling out light, each of the light guides being provided on at least one of its ends with a light source. The light sources preferably comprise colored LEDs.

Abstract: A visual display system includes a display device having an image display region for presenting images to a viewer. The system includes one or more illumination sources that at least partially peripherally surround the image display region and/or project illumination radiated therefrom so as to illuminate a region visually appearing to the viewer to at least partially peripherally surround the image display region. A control device controls light radiation emitted in use from the one or more illumination sources in response to at least one of image and audio indicative signals so as to provide at least a partial spatial extension of the image display region.

Abstract: The invention relates to a video system which is able to show more than one channel at the same time. If a user, after watching an original channel sufficiently long, zaps to another channel, the original channel is displayed in for example a PIP, together with the new channel in a main picture. After zapping yet to a third channel, the original channel is still displayed in the PIP. In this way, the user can keep track of the original channel while zapping other channels.

Abstract: A display device including a plurality of image projection devices and a display. The display device provides received content to the display and provides image signals to the plurality of image projection devices. In response to the provided image signals, the plurality of image projection devices project images on an area of a display surface that is separate from the display. A plurality of image capture devices positioned around the display device operate during a calibration and/or alignment procedure of the plurality of image projection devices to calibrate and/or align the projected images.

Abstract: A system (600) for performing gamut compression or gamut extension by transforming an input color (608) of an input image defined within a first gamut (102) into a reproduction color (610) of an output image for rendering by a reproduction device capable of rendering colors within a second gamut (104) different from the first gamut. The input color has an input chromaticity (C1) and an input lightness (Z-*) together forming an input point (202) in a chromaticity-lightness plane. The reproduction color has a reproduction point (210) in the chromaticity-lightness plane, wherein an absolute difference between the input lightness and the output lightness is a decreasing function of at least the chromaticity. An absolute difference between the input chromaticity and the output chromaticity is an increasing function of at least the chromaticity.

Abstract: A system suitable for backlighting is provided. The system comprises a monitor unit configured to monitor an information signal, and to generate a first signal based at least partly on the information comprised in the information signal, a control unit configured to control the reaction time of at least one illumination area capable of emitting properties of light and comprised in the system, based on the first signal, wherein the first signal may comprise scene change information. The system provides for a more peaceful backlighting effect while still being able to stress actions, such as scene changes, happening in the presented information signal. A method and computer-readable medium are also provided.

Abstract: A physical object (10) comprises a store (72) for storing at least one Content Reference Identifier (CRID) and a communications interface (71) for conveying the CRID to a receiver (20). Upon receiving the CRID, the receiver (20) can resolve the CRID to locate content for consuming (e.g. for presentation or scheduling for recording or later presentation) and can use the CRID to retrieve metadata relating to the content. Appropriate content can be selected by bringing the associated object (10) within range of the receiver (20), thus obviating the need to use a remote control or electronic programmed guide. The CRID can be pre-programmed in store (72) of object (10) or can be selected by a user by a replaceable card or input device.

Abstract: This invention relates to an ambience lighting system for use in conjunction with a display device including an image display region. A central control receives an incoming audio video stream (AVS) and to determines color information at the periphery of the image to be displayed. Light sources are disposed in a pre-fixed arrangement in relation to the periphery of the image display region, and local control units are coupled to open or more light sources selected from the multiple light sources for locally operating the at least one coupled light source. The central control unit is adapted to transmit the determined color information as a stream to each respective local control unit, which use a portion of the received color information to operate the at least one coupled light source, the portion being determined based on the position of the at least one coupled light source within the pre-fixed arrangement.