Abstract: I describe and claim a multiple audio signal presentation system and method. The multiple audio signal presentation system includes a presentation system to present a plurality of audio signals, and a controller to manipulate one or more of the audio signals, where the audio signals, when concurrently presented by the presentation system, are audibly differentiable responsive to the manipulation.

Abstract: A display, possibly in combination with a computer, is used to manage the shape and position of various inputs, so that the inputs can be presented in combination. Possible combinations include displaying a subset of one input with another input, either overlapping or adjacent, displaying a temporal subset of one input, and using conditions to automatically control the selection of inputs.

Abstract: We describe a method for reducing the block effect in video file compression including inspecting an image in a row and column direction, calculating an intensity vector of the block effect responsive to the inspecting, obtaining distribution data for the block effect responsive to the intensity vector, determining position information of the block effect responsive to the distribution data, and filtering the image responsive to the intensity vector and the position information.

Abstract: We describe and claim a video system and method for automatic size and position adjustment according to the incoming stream. A detection module detects a size and a position of video including an aspect ratio of video on at least one channel of at least one video input source. An execution module adjusts a scale mode responsive to the detection of the size and position or aspect ratio of the video. Once the aspect ratio has been detected and the scale mode adjusted responsive to the detection, video is provided to the display of a display device. The detection and execution modules crop unintentional vertical blanking interval (VBI) lines from upconverted video signals. An on screen display includes a selection for active management that provides for automatic detection of size and position information, or a manual control mode for selection by the user.

Abstract: A boost table stores adjusted target levels for pairs of original and target pixel levels. The adjusted target levels can be used to as a substitute for the target pixel level to improve pixel response in reaching the desired target pixel level. A reduced boost table can be used, storing a subset of the adjusted target levels. Fuzzy logic control rules can be used to calculate adjusted target levels not actually stored in the reduced boost table.

Abstract: To interpolate a value for a pixel, multiple patterns are selected. Each pattern is used to determine a pixel angle. One of the determined pixel angles is then selected based on the reliability of the pixel angles. The selected pixel angle can be selected based on its reliability irrespective of the reliability of other pixel angles. The selected pixel angle can then be used to interpolate a value for the target pixel. Dynamic thresholds can be computed for use in either determining a pixel angle for a given pattern, or to select the pixel angle from the available determined pixel angles.

Abstract: To determine if a pixel exhibits artifacts, statistics are generated for the pixel and its neighbors. These statistics are compared with thresholds. If the comparison of the statistics and the thresholds suggests that the pixel exhibits a pixel artifact, then recourse can be taken, either to adjust the pixel value in some way, or to reject the angle of interpolation used in computing the value for the target pixel.

Abstract: A system and method for converting a pixel rate of a digital image frame is provided. The system includes a display controller with an embedded buffer and programmable input and output buffers. The input buffer writes lines of the frame at a source pixel rate while the output pointer reads out lines of the frame at a display pixel rate thereby allowing display of an image having a source pixel rate that is different, e.g., higher, than a display pixel rate.

Abstract: We describe a device and an associated method that includes an EHT signal processing module to generate a compensated gain signal responsive to a first EHT signal. A field fly-back processing module generates a first correcting signal responsive to a first VFB signal. A horizontal scanning correction module generates a predistortion signal responsive to the compensated gain signal. A first digital to analog conversion module converts the predistortion signal into a corresponding analog predistortion signal. A field scanning correction module generates a correcting wave responsive to the compensated gain signal and the first correcting signal. A pulse width modulated module generates a modulated correcting wave by pulse width modulating the correcting wave. A power amplification module generates an amplified modulated correcting wave by amplifying the modulated correcting wave. And a cathode ray tube displays an image responsive to the analog predistortion signal and the amplified modulated correcting wave.

Abstract: A video sequence may include a modality corresponding with an embedded pattern. At least one state machine detects the modality in accordance with difference signals. A signal generator generates the difference signals responsive to decision windows that define regions of interest in the video sequence. The modality may correspond with an embedded film source or other pattern types in the video sequence. Where the state machine detects more than one pattern, a single pattern is selected according to a predetermined priority. The video sequence may contain both static patterns and embedded film source patterns. The state machine discerns the presence of the embedded film source patterns notwithstanding the presence of the static patterns.

Abstract: To determine if a pixel exhibits artifacts, statistics are generated for the pixel and its neighbors. These statistics are compared with thresholds. If the comparison of the statistics and the thresholds suggests that the pixel exhibits a pixel artifact, then recourse can be taken, either to adjust the pixel value in some way, or to reject the angle of interpolation used in computing the value for the target pixel.

Abstract: A projector determines horizontal and vertical tilt angles. Using the tilt angles and the inherent properties of the projector, keystone correction corner points for the image can be computed. The keystone correction corner points can be used to perform keystone correction on the image.

Abstract: We describe a device that dynamically increases the contrast of the effective gray level based on the gray level distribution of serial images, performs soft-transfer of dynamic contrast adjustment curve when a scene switch occurs thereby realizing adaptive contrast enhancing while effectively avoiding image flicker. A device and associated method for enhancing image contrast includes a gray level distribution statistic circuit to calculate gray level statistic data of an image responsive to an image brightness signal. An adaptive contrast mapping curve calculation circuit calculates a gray level mapping curve responsive to the gray level statistic data. An inter-frame curve soft-merging circuit performs inter-frame soft-merging to the gray level mapping curve. And a gray level mapping circuit performs gray level mapping of the input image brightness signal.

Abstract: We describe and claim television channel change picture-in-picture circuit and method. The circuit includes means for displaying a first channel on a primary portion of a screen, means for changing from the first channel to a second channel, and means for displaying the second channel on a secondary portion of the screen responsive to the means for changing from the first to the second channel while continuing to display the first channel on the primary portion of the screen.

Abstract: The invention relates to an automatic keystone correction system and method. The system includes an interface to display a pattern on a projection surface and a controller to distort image data responsive to the pattern. The pattern includes a plurality of polygons, each with a predetermined shape. Each polygon corresponds to a particular system rotation angle. The controller distorts the image data responsive to the rotation angle. A user interacts with the interface to identify a particular polygon that, when projected on a projection surface, has a predetermined shape.

Abstract: A video sequence may include a modality corresponding with an embedded pattern. At least one state machine detects the modality in accordance with difference signals. A signal generator generates the difference signals responsive to decision windows that define regions of interest in the video sequence. The modality may correspond with an embedded film source or other pattern types in the video sequence. Where the state machine detects more than one pattern, a single pattern is selected according to a predetermined priority. The video sequence may contain both static patterns and embedded film source patterns. The state machine discerns the presence of the embedded film source patterns notwithstanding the presence of the static patterns.

Abstract: A display, possibly in combination with a computer, is used to manage the shape and position of various inputs, so that the inputs can be presented in combination. Possible combinations include displaying a subset of one input with another input, either overlapping or adjacent, displaying a temporal subset of one input, and using conditions to automatically control the selection of inputs.

Abstract: A method and system for performing fuzzy logic based de-interlacing on film source fields that might be mixed with video on film. An embodiment of the invention comprises an adaptive de-interlacer by weighing between merge operation and interpolation operation in the case of occurring video on film motion object. A weighing factor is generated from video on film pattern based on fuzzy logic inference rules. This weighing factor specifies the weighting between merging and interpolating in assigning the pixel values of the progressive display output.

Abstract: I describe and claim a temporal comb filtering system and method. The temporal comb filter system includes a comb filter to temporally process separated luminance and chrominance components from an image field responsive to image data from at least one other image field and a panel to display the processed components. The comb filter includes a cross-chroma detector to detect luminance information within chrominance data from a first image field responsive to chrominance data from at least one other image field and a cross-luma detector to detect chrominance information within the luminance data from the first image field responsive to the luminance data from at least one other image field.

Abstract: An adaptive filter calculates a target pixel from an interlaced video signal. The video signal comprises a plurality of frames, each of which comprises an even and an odd field. The filter comprises a quantized motion calculator and a filter selector. The quantized motion calculator estimates an amount of motion about the target pixel. The filter selector selects a filter in accordance with the estimated amount of motion. The filter applies a first weighting factor to a plurality of current field pixels and a second weighting factor to a plurality of previous field pixels for creating the target pixel.