Abstract: A method, a computer readable medium, and a system are provided for generating control information for controlling computer system operation during execution of the computer system. At least one attribute change of a computer system to occur during execution of the computer system is identified. The attribute change is associated with an event taking place during computer system execution. An index point is created identifying the attribute point as triggering the attribute change, and the index point is associated with the attribute change in the computer system. The index point is stored in a format configured to be used by the computer system to initiate the attribute change upon the index point being reached during the execution of the computer system.

Abstract: A method and system are provided for controlling a computer, data, or media system in response to state changes in the computer system. At least one state table having a first dimension and a second dimension is created. At least one programming element is listed along the first dimension and a plurality of states of the computer system are listed along the second dimension. At each intersection of the first dimension and the second dimension is a cell in which an operand is specified for the programming element at each state. For each state change of the computer system, each programming element listed along the first dimension is executed according to the operand listed for a current state.

Abstract: A method, a computer readable medium, and a data system are provided for controlling computer system operation during execution of the computer system. At least one attribute change of a computer system to occur during the execution of the computer system is identified. The attribute change is associated with an event during computer system execution such that indication of the event triggers the attribute change. An index point is identified at which point the attribute change is to occur, and an index point type is specified for determining whether the attribute change is triggered depending on when the execution of the computer system commenced relative to occurrence of the index point.

Abstract: A method, a computer readable medium, and a system are provided for controlling computer system operation during execution of the computer system. At least one attribute change of a computer system to occur during the execution of the computer system is identified. The attribute change is associated with a state change in the computer system such that indication of the state change triggers the attribute change. An index point is identified at which point the state change is to occur. The state change is associated with the index point, and when the index point is reached during the course of computer system execution, the attribute change is triggered automatically upon the index point being reached. The method, computer readable medium, and system can be used for controlling computer system execution in a broadcast environment or used to emulate computer system execution.

Abstract: A method and structure for tagging data files with application information. A control application is distributed to users and recipients of data files. The control application allows users to either create or open a data file. To create a data file, the control application accesses the desired creating application and embeds information about the control application into the data file. The control application also includes information on a location of the exact version of the exact application for access of the contents of the data file. To open a data file, the control application accesses the embedded information and determines if the proper version of the correct application is present. If it is not, the control application uses the location information to access the proper version of the application, download it to a local site, and use it to access the contents of the data file.

Abstract: A method embeds tracking data into image graphics data that represents the image according to a first colorspace. The tracking data is embedded during encoding in black or white locations of the image, as variations of the chrominance coefficients. When the resulting data is converted into a second color space, the user tracking data does not alter the eventual visual image. Decoding methods are also provided for extracting the tracking data.

Abstract: An encoder receives a video input that includes initial video data and encodes the initial video data as encoded video data, such that the encoded video data comprises fewer bytes than the initial video data. The encoded video data is transmitted through a computer network to a decoder that receives the encoded video data and reconstructs an image representative of the video input for viewing on a display. A sensor senses at least one of viewer information representative of at least one of a location and movement of a viewer, and display information identifying the display. Viewer data representative of the at least one of the viewer information and the display information is transmitted to the encoder to modify the method of encoding the initial video data.

Abstract: A method for managing execution priorities in a multitasking operating system. The user sets execution priorities by the position of the application window on the screen relative to the other windows. When the user changes the position of the window, the system determines the new position relative to the other windows and reallocates the execution priorities based upon that window's new position. The allocation is done separately from the active window with which the user is currently interacting. In some instances, constraints may be placed upon the execution priority settings that prevent the system from exceeding certain maximums or going below certain minimums.

Abstract: A power conservative multi-segment LED transmitter including a multi-segment LED with a plurality of independently addressable LED segments, each LED segment suitable for selectively emitting a beam segment. A controller selectively enables and disables the LED segments. Depending on whether the beam segments overlap or not and whether low or high power is supplied to the enabled LED segments, the combined resulting beam may be a low power steered beam, a power conservative steered beam, an overlapping low power intense steered beam, or an overlapping power conservative steered beam.

Abstract: Block boundary artifact reduction in decompressed digital images is accomplished by filtering the intensity of pixels in the vicinity of the block boundary. The filter utilizes filter coefficients selected from tables on the basis of the distribution of a scalar quantity describing the pixels neighboring the pixel to which the intensity adjustment is to be applied. The intensities of pixels at the boundary and one pixel removed from the boundary are adjusted. If interpolation pixels in each of neighboring blocks are of relatively constant intensity, the intensities of additional pixels, more remote from the boundary, are adjusted. Filter coefficients can be selected from different arrays for pixels on the boundary or removed from the boundary or if the pixel intensity adjustment is based on the intensities of pixels in a horizontal row or vertical column of interpolation pixels.

Abstract: Block boundary artifact reduction in decompressed digital images is accomplished by filtering the intensity of pixels in the vicinity of the block boundary. The filter utilizes filter coefficients selected from tables on the basis of the distribution of a scalar quantity describing the pixels neighboring the pixel to which the intensity adjustment is to be applied. The intensities of pixels at the boundary and one pixel removed from the boundary are adjusted. If interpolation pixels in each of neighboring blocks are of relatively constant intensity, the intensities of additional pixels, more remote from the boundary, are adjusted. Filter coefficients can be selected from different arrays for pixels on the boundary or removed from the boundary or if the pixel intensity adjustment is based on the intensities of pixels in a horizontal row or vertical column of interpolation pixels.

Abstract: A method is provided for upsampling a received YCbCr signal. The method generates the missing chrominance coefficients for each individual pixel, with a view to converting the data in the RGB color space. The method takes into account the values of the chrominance coefficients actually received for a neighboring pixel, the values of the luminance of the pixel, and of the saturation value for chrominance coefficients, as dictated by the RGB boundaries at that value of the luminance of the pixel.

Abstract: An efficient method of computing gamma correction tables of the present invention includes the following steps: determining a gamma correction equation between luminance values produced between two representations; determining at least one polynomial approximation to the gamma correction equation, the at least one polynomial approximation having coefficient values cI; for each coefficient value cI, grouping together all of the coefficient values over a range of &ggr; and then fitting a polynomial equation to each grouping to get a respective coefficient polynomial equation; computing coefficients for a given value of &ggr; using the coefficient polynomial equations; computing gamma conversion transformations using the computed coefficients and a simplified mathematical formula; and storing the computed gamma conversion transformations in a gamma correction table.

Abstract: A simple display of items from a list, which changes in synchrony with the corresponding video display, and permits simple navigation under user control. The display includes three control objects positioned below a video frame window on a display screen. A middle displayed object is located in a focus position and corresponds to the video segment currently being played in the video window. When play of the segment is complete, the object located to the right of the focus position moves and displaces the middle displayed object, most recently displayed within the focus position, to indicate a forward progression within the viewed video sequence.

Abstract: A user interface is provided for handling a group of screen objects. The interface establishes a viewport in a portion of the screen. The interface allows the user to define a set of planes, and to assign each object to one of the planes. A tab identifying each plane is always visible, and is used to select one plane at a time. The objects of the selected plane are thus displayed through the viewport, and available for handling as is known. The planes are stacked in a sequence, which is reflected in the order of the tabs. Also viewable in the viewport the objects of the next plane in the sequence but can not be worked upon. Navigation thus creates a sense of moving perpendicularly to the screen, which banks on the user's preconceived sense of depth.

Abstract: In a method for image processing, an image is scanned. A first portion of the image is displayed based at least in part upon a first value of a first adjustable parameter, where the first parameter affects the appearance of the image. A second portion of the image is simultaneously displayed based at least in part upon a second value of the first parameter, where the second value is different from the first value. A first processing value is selected based upon at least one of the first value and second value. The image is processed in accordance with the first processing value. In one aspect of the method, the first portion of the image is displayed adjacent to the second portion of the image. In another aspect of the method, the first parameter is selected from the group consisting of density, contrast, focus, edge enhancement, and gamma correction.

Abstract: A method and apparatus for document imaging is disclosed. The apparatus uses a flatbed scanner with a selectively opaque/transparent liquid crystal platen. The platen is divided into controllable segments defined by an electrode pattern formed within the platen itself. These segments can each be selectively made transmissive or opaque by applying appropriate voltages to the segment electrodes. An advantage of the invention is that it can operate without a platen cover, since the area of the platen not covered by the original can be made opaque. The opaque part of the platen directs imaging light back into the system, shielding a user's eyes and helping to create a white background if the platen is imaged.

Abstract: In a method for image processing, an image is scanned. A first portion of the image is displayed based at least in part upon a first value of a first adjustable parameter, where the first parameter affects the appearance of the image. A second portion of the image is simultaneously displayed based at least in part upon a second value of the first parameter, where the second value is different from the first value. A first processing value is selected based upon at least one of the first value and second value. The image is processed in accordance with the first processing value. In one aspect of the method, the first portion of the image is displayed adjacent to the second portion of the image. In another aspect of the method, the first parameter is selected from the group consisting of density, contrast, focus, edge enhancement, and gamma correction.

Abstract: A reflective liquid crystal display panel has a two-dimensional array of reflective pixel electrodes. A diffraction grating is provided in the border spaces between the neighboring reflective electrodes. The diffraction grating diffracts the incident light sideways, thereby subtracting it from the total returned light, which increases the available optical contrast. The diffraction grating is tuned to the peak wavelength of the ambient illumination. It is formed as additional structure on the substrate during fabrication. The structure uses raised mesas arranged in a checker board pattern. The mesas define floors between them, and have roofs that are raised from the floors by a quarter wavelength.

Abstract: Color images are processed in a digital electronic device as data in the YCBCR (YUV) (luminance, chrominance-blue, chrominance-red) color space. However, output devices usually require the color data to be converted to RGB (red, green, blue) data and may have a color resolution less than the color resolution of the original image. The present invention provides a method of constructing a perceptually optimized color palette useful in converting higher resolution images of YCBCR data to lower resolution images of RGB data. To construct the palette the RGB color gamut is defined in the YCBCR color space. The YCBCR color space is divided into a grid of colors equally spaced along the CB and CR axes and perceptually equally spaced along the luminance, Y, axis. Colors in the grid are moved to the boundary of the RGB color gamut in each luminance plane to ensure maximally saturated colors.