Abstract: An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. Another form of the invention uses three different types of particles within a single electrophoretic layer, with the three types of particles being arranged to shutter independently of one another.

Abstract: The present invention provides for a method of rendering an image on a reflective display wherein each pixel is capable of rendering a limited number of colors, each of which is rendered by predetermined set of waveforms stored in a waveform lookup table. Furthermore, the present invention provides for a method for rendering an image using such colors, having been chosen for optimal color rendition. This invention further provides for rendering a color image formed from a plurality of pixels on a reflective display wherein each pixel has a color selected from the group consisting of at least: red, green, blue, cyan, magenta, yellow, black and white.

Abstract: A color display has continuous areas of a single color covering a plurality of sub-pixel electrodes. Each sub-pixel of a given color has sub-pixels of the same given color disposed along at least two of its adjacent edges. Each area of a single color may cover a 2×2 array of sub-pixel electrodes. The colors used may be red/green/blue/white (RGBW), red/green/blue/yellow (RGBY), or orange/lime/purple/white.

Abstract: An electrophoretic medium comprises a fluid and at least one species of particles disposed, When a first addressing impulse is applied to the medium, the first species of particles move in one direction relative to the electric field, but when a second addressing impulse, larger than the first addressing impulse, is applied to the medium, the first species of particles move in the opposed direction relative to the electric field.

Abstract: A tetrachromatic color filter array comprises multiple pixels, each of which comprises first, second, third and fourth sub-pixels having first, second, third and fourth hues, P1, P2, P3 and P4 respectively, these first, second, third and fourth hues having first, second and third hue angles, h1, h2, h3 and h4 respectively. The hues of the sub-pixels such that h3 equals h1+(180°±10°) and h4 equals h2+(180°±10°) in the a*b* plane of the La*b* color space.

Abstract: A laminate comprising a solid electro-optic medium and an electrically conductive layer is tested by passing it over a pair of electrodes at different potentials, with the electrically conductive layer lying on the opposed side of the electro-optic medium from the electrodes. An article which can be tested by this method, and which is useful in the manufacture of electro-optic displays, comprises a layer of a solid electro-optic medium and a release sheet comprising an electrically conductive layer.

Abstract: Methods for driving electro-optic displays, especially bistable displays, include (a) using two-part waveforms, the first part of which is dependent only upon the initial state of the relevant pixel; (b) measuring the response of each individual pixel and storing for each pixel data indicating which of a set of standard drive schemes are to be used for that pixel; (c) for at least one transition in a drive scheme, applying multiple different waveforms to pixels on a random basis; and (d) when updating a limited area of the display, driving “extra” pixels in an edge elimination region to avoid edge effects.

Abstract: An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. Another form of the invention uses three different types of particles within a single electrophoretic layer, with the three types of particles being arranged to shutter independently of one another.

Abstract: An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. Another form of the invention uses three different types of particles within a single electrophoretic layer, with the three types of particles being arranged to shutter independently of one another.

Abstract: A tetrachromatic color filter array comprises multiple pixels, each of which comprises first, second, third and fourth sub-pixels having first, second, third and fourth hues, P1, P2, P3 and P4 respectively, these first, second, third and fourth hues having first, second and third hue angles, h1, h2, h3 and h4 respectively. The hues of the sub-pixels such that h3 equals h1+(180°±10°) and h4 equals h2+(180°±10°) in the a*b* plane of the La*b* color space.

Abstract: In accordance with one embodiment a graphics processing system is configured to switch from a processing of a primitive associated with a first context to a processing of a command list associated with a second context where the primitive includes a plurality of regions. The system includes a plurality of processing modules and at least one module of the plurality of processing modules is configured to receive a request to switch to the second context.

Abstract: An electro-optic display comprising at least two separate layers of electro-optic material, with one of these layers being capable of displaying at least one optical state which cannot be displayed by the other layer. The display is driven by a single set of electrodes between which both layers are sandwiched, the two layers being controllable at least partially independently of one another. Another form of the invention uses three different types of particles within a single electrophoretic layer, with the three types of particles being arranged to shutter independently of one another.

Abstract: A color display has continuous areas of a single color covering a plurality of sub-pixel electrodes. Each sub-pixel of a given color has sub-pixels of the same given color disposed along at least two of its adjacent edges. Each area of a single color may cover a 2×2 array of sub-pixel electrodes.

Abstract: A color filter array comprises orange, lime and purple sub-pixels, optionally with the addition of white sub-pixels. The color filter array is useful in electro-optic displays, especially reflective electro-optic displays. A method is provided for converting RGB images for use with the new color filter array.

Abstract: A technique for optimizing or enhancing color images. Embodiments are disclosed for creating an enhanced color image, including the enhancement of perceived color uniformity. In a “dot-on-dot” registration scheme for producing color images, the dots need to be precisely superimposed on each other to provide optimum or enhanced images. The dot-on-dot registration produced by a single head thermal printer is generally acceptable, but a single head machine is very slow because multiple passes (reciprocation) are required to lay down multiple colors of dots. In a much faster multi-head or tandem thermal imaging system a serious problem of dot misalignment may cause more patterns or other visual artifacts in the color images produced by dot patterns. A solution to this problem is disclosed herein which intentionally misregisters superimposed dots in a novel and particular manner to achieve image optimization.

Abstract: A technique for optimizing or enhancing color images. Embodiments are disclosed for creating an enhanced color image, including the enhancement of perceived color uniformity. In a “dot-on-dot” registration scheme for producing color images, the dots need to be precisely superimposed on each other to provide optimum or enhanced images. The dot-on-dot registration produced by a single head thermal printer is generally acceptable, but a single head machine is very slow because multiple passes (reciprocation) are required to lay down multiple colors of dots. In a much faster multi-head or tandem thermal imaging system a serious problem of dot misalignment may cause moire patterns or other visual artifacts in the color images produced by dot patterns. A solution to this problem is disclosed herein which intentionally misregisters superimposed dots in a novel and particular manner to achieve image optimization.

Abstract: A laminate comprising a solid electro-optic medium and an electrically conductive layer is tested by passing it over a pair of electrodes at different potentials, with the electrically conductive layer lying on the opposed side of the electro-optic medium from the electrodes. An article which can be tested by this method, and which is useful in the manufacture of electro-optic displays, comprises a layer of a solid electro-optic medium and a release sheet comprising an electrically conductive layer.

Abstract: A laminate comprising a solid electro-optic medium and an electrically conductive layer is tested by passing it over a pair of electrodes at different potentials, with the electrically conductive layer lying on the opposed side of the electro-optic medium from the electrodes. An article which can be tested by this method, and which is useful in the manufacture of electro-optic displays, comprises a layer of a solid electro-optic medium and a release sheet comprising an electrically conductive layer.

Abstract: The present invention relates to the field of electronic transactions and more particularly concerns a dynamic configurable transaction system capable of dynamically configuring a transaction terminal and dynamically processing a transactional operation, as well as to a method associated thereto. There is provided a dynamic configurable transaction system enabling a user to complete a transactional operation through a central server. The system comprises a transaction terminal in communication with the central server via a system network and a server application at the central server.

Abstract: A color filter array comprises orange, lime and purple sub-pixels, optionally with the addition of white sub-pixels. The color filter array is useful in electro-optic displays, especially reflective electro-optic displays. A method is provided for converting RGB images for use with the new color filter array.