Patents Assigned to Jaldi Semiconductor Corp.
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Patent number: 7319494Abstract: A method is provided for selecting a filter for interpolating a target pixel for reducing noise in an image. The method comprises the following steps. A plurality of pixels along a predetermined contour is compared with a plurality of predefined patterns. The patterns represent visually significant patterns possible along said contour. A filter is selected from a predefined set of filters in accordance with the results of the comparison.Type: GrantFiled: May 16, 2005Date of Patent: January 15, 2008Assignee: Jaldi Semiconductor Corp.Inventors: G. Finn Wredenhagen, Andrew Elias
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Patent number: 7154512Abstract: A system for generating a target pixel in a target grid from a plurality of source pixels in a source grid, said system comprising, a filter controller for determining a first distance between said target pixel and a source pixel to the left of said target pixel, and a second distance between said target pixel and a source pixel to the right of said target pixel; a left portion lookup circuit for determining filter coefficients for a left portion of said target pixel in accordance with said first difference; a right portion lookup circuit for determining filter coefficients for a right portion of said target pixel in accordance with said second difference; and a filter reconstruction unit for creating a filter in accordance with said left and right portion filter coefficients, said created filter for generating said target pixel from said plurality of source pixels.Type: GrantFiled: October 26, 2001Date of Patent: December 26, 2006Assignee: Jaldi Semiconductor Corp.Inventor: Lance Greggain
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Patent number: 7142729Abstract: A method for interpolating a target pixel from a plurality of source pixels in a high contrast image. The method comprises the following steps. A window of the plurality of source pixels is examined and compared with a plurality of predefined conditions for determining if a structure of significance is present within the window. A filter configuration is selected from a plurality of filter configurations in accordance with results of the comparison. The selected filter is applied to the source pixels for interpolating the target pixel. If the structure of significance is detected in the window, the selected filter best preserves the structure.Type: GrantFiled: March 27, 2002Date of Patent: November 28, 2006Assignee: Jaldi Semiconductor Corp.Inventors: G. Finn Wredenhagen, Sam Leung, Lance Greggain
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Patent number: 7129990Abstract: A system detects a non-video source embedded in a video sequence and provides direction to a deinterlacing algorithm accordingly. The system comprises a signal generator for generating a plurality of signals. The signals are generated in accordance with pixels input from the video sequence. The system further comprises a plurality of pattern detection state machines, each for receiving the signals and for detecting a pattern in the video sequence. The pattern is detected in accordance with a preset threshold, wherein the pattern detection state machine varies the preset threshold in accordance with the received signals. The system further comprises an arbiter state machine coupled with the plurality of pattern detection state machines for governing the pattern detection state machines and for determining whether or not a non-video source is embedded in the video sequence.Type: GrantFiled: December 21, 2001Date of Patent: October 31, 2006Assignee: Jaldi Semiconductor Corp.Inventors: G. Finn Wredenhagen, Gary Cheng, Kevin Ng
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Publication number: 20060238650Abstract: 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.Type: ApplicationFiled: July 10, 2006Publication date: October 26, 2006Applicant: JALDI SEMICONDUCTOR CORP.Inventors: Finn G. Wredenhagen, Gary Cheng, Soo Jang, Lance Greggain
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Patent number: 7127123Abstract: Contrast in an image is enhanced by mapping an input intensity value to an output intensity value in accordance with a mapping function. A mean intensity value of the image is determined. Co-ordinates of the mapping function are calculated in accordance with the mean intensity value and a plurality of predefined parameters. The mapping function is applied to the input intensity value for determining the output intensity, wherein the mapping function is generated dynamically for each image.Type: GrantFiled: June 24, 2002Date of Patent: October 24, 2006Assignee: Jaldi Semiconductor Corp.Inventors: G. Finn Wredenhagen, Peter Ang
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Patent number: 7098958Abstract: 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.Type: GrantFiled: April 28, 2004Date of Patent: August 29, 2006Assignee: Jaldi Semiconductor Corp.Inventors: G. Finn Wredenhagen, Gary Cheng, Soo Chang Jang, Lance Greggain
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Publication number: 20050243205Abstract: A method is provided for selecting a filter for interpolating a target pixel for reducing noise in an image. The method comprises the following steps. A plurality of pixels along a predetermined contour is compared with a plurality of predefined patterns. The patterns represent visually significant patterns possible along said contour. A filter is selected from a predefined set of filters in accordance with the results of the comparison.Type: ApplicationFiled: May 16, 2005Publication date: November 3, 2005Applicant: Jaldi Semiconductor Corp.Inventors: G. Wredenhagen, Andrew Elias
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Patent number: 6933983Abstract: A method is provided for selecting a filter for interpolating a target pixel for reducing noise in an image. The method comprises the following steps. A plurality of pixels along a predetermined contour is compared with a plurality of predefined patterns. The patterns represent visually significant patterns possible along said contour. A filter is selected from a predefined set of filters in accordance with the results of the comparison.Type: GrantFiled: May 28, 2002Date of Patent: August 23, 2005Assignee: Jaldi Semiconductor Corp.Inventors: G. Finn Wredenhagen, Andrew Elias