Patents by Inventor Heo-jin Byeon
Heo-jin Byeon has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 7869650Abstract: A digital video signal processing apparatus and method for compensating a chrominance (C) signal includes receiving the C signal separated from an input video signal and compensating the C signal in at least one dimension thereof to generate a compensated C signal. A comparator may determine whether a portion of a Y signal in the input video signal is present in the C signal. The compensator may compensate the C signal only when the comparator determines a portion of the Y signal is present in the C signal. The comparator may calculate a variation between current C data of the input video signal and adjacent C data and compare the variation to a threshold value.Type: GrantFiled: January 9, 2006Date of Patent: January 11, 2011Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-cheol Park, Hyung-jun Lim, Jae-hong Park, Jae-hong Park, Heo-jin Byeon, Kyoung-mook Lim
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Patent number: 7773157Abstract: An adaptive digital video signal processing apparatus and method for Y/C separation. In the video signal processing apparatus, an adaptive 2D BPF carries out Y/C separation through comb filtering and bandpass filtering selected according to local characteristics of an image (e.g., based on the direction in which an edge in the image extends in vertical and horizontal directions. The adaptive 2D BPF performs 2D bandpass filtering in general case. The 2D BPF adaptively executes a series of selections of the various filtering operations in a continuous manner.Type: GrantFiled: January 13, 2006Date of Patent: August 10, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-Cheol Park, Hyung-Jun Lim, Jae-Hong Park, Kyoung-Mook Lim, Heo-Jin Byeon, Eui-Jin Kwon
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Patent number: 7710500Abstract: Sync positions are detected from a video signal. The detected sync positions are processed (e.g., averaged) to generate modified sync positions. The detected sync positions and the modified sync positions are selectively used to sample and synchronize a color signal derived from the video signal. For example, the detected sync positions and the modified sync positions may be selectively used to sample and synchronize the color signal responsive to differences between the modified sync positions. The invention may be embodied as apparatus and/or methods.Type: GrantFiled: December 20, 2005Date of Patent: May 4, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Heo-jin Byeon, Kyung-mook Lim, Hyung-jun Lim, Jae-hong Park, Sung-cheol Park, Eui-jin Kwon
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Digital video processing systems and methods for estimating horizontal sync in digital video signals
Patent number: 7697067Abstract: Video signal processing systems and methods for detecting horizontal synchronization signals within video signals. Digital filtering methods are implemented for processing analog video signals to determine time varying characteristics of video signals to detect the starting and ending positions of horizontal synchronization pulses in a video signal with increased accuracy. In addition, adaptive methods are implemented for dynamically determining various video signal parameters over time, such as blanking level BL, threshold value (slice) level and synchronization level SL using information extracted from digitally filtered video signals.Type: GrantFiled: December 8, 2005Date of Patent: April 13, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Kyoung-mook Lim, Heo-jin Byeon, Hyung-jun Lim, Seh-woong Jeong, Jae-hong Park, Sung-cheol Park -
Patent number: 7671925Abstract: A circuit for reducing cross-color artifacts in video data can include three luminance/chrominance (Y/C) separator circuits each configured to provide sets of chrominance coordinates based on a respective three contiguous composite video frames. A first circumcircle calculator circuit is coupled to the three Y/C separator circuits and is configured to provide a circumcircle for a set of chrominance coordinates corresponding to the first, second and third contiguous composite video frames. A second circumcircle calculator circuit is coupled to the three Y/C separator circuits and is configured to provide a circumcircle for a set of chrominance coordinates corresponding to the second and third contiguous composite video frames and a fourth contiguous composite video frame. Related methods and computer program products are also disclosed.Type: GrantFiled: February 14, 2006Date of Patent: March 2, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Hyung-Jun Lim, Sung-Cheol Park, Jae-Hong Park, Kyoung-Mook Lim, Heo-Jin Byeon, Jae-Hong Park
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Patent number: 7671923Abstract: A digital processing system and method for tracking a subcarrier included in a video signal are provided, where a phase comparator tracks the phase of a color burst signal based on predetermined supposed phases, Y/C separation and demodulation are carried out based on a compensation phase that is updated by a phase compensator in response to the tracked phase, and the Y/C separation and demodulation are performed based on a compensation frequency determined by a frequency compensator by checking short-term and long-term variations in the updated compensation phase.Type: GrantFiled: December 19, 2005Date of Patent: March 2, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Heo-Jin Byeon, Kyoung-Mook Lim, Hyung-Jun Lim, Seh-Woong Jeong, Jae-Hong Park, Sung-Cheol Park
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Patent number: 7663702Abstract: A digital video signal processing apparatus and method for adaptive spatio-temporal Y/C separation in multiple directions. In the digital video signal processing apparatus, an adaptive three-dimensional band pass filter (3D BPF) performs Y/C separation using local comb filtering/1D band pass filtering when the edge direction is fixed vertically/horizontally according to spatio-temporal local characteristics of an image using spatio-temporal filters. When the edge direction is not fixed horizontally/vertically, the 3D BPF performs 2D band pass filtering in all directions. Thus, the 3D BPF continuously carries out comb filtering, 1D band pass filtering and 2D band pass filtering according to the spatio-temporal local characteristics of the image.Type: GrantFiled: January 13, 2006Date of Patent: February 16, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-cheol Park, Kyoung-mook Lim, Hyung-jun Lim, Seh-woong Jeong, Jae-hong Park, Heo-jin Byeon
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Patent number: 7659944Abstract: A digital video signal processing apparatus and method for field-based adaptive Y/C separation includes an adaptive 3D BPF performing Y/C separation according to local comb filtering/1D band pass filtering when the edge direction is fixed vertically/horizontally in response to spatio-temporal local characteristics of an image using spatio-temporal filters. When the edge direction is not fixed horizontally or vertically, the 3D BPF performs 2D/3D band pass filtering in all directions. The 3D BPF adaptively and continuously carries out comb filtering, 1D band pass filtering and 2D/3D band pass filtering in response to the spatio-temporal local characteristics of the image.Type: GrantFiled: January 13, 2006Date of Patent: February 9, 2010Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-cheol Park, Hyung-jun Lim, Jae-hong Park, Kyoung-mook Lim, Heo-jin Byeon, Dong-suk Shin
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Patent number: 7605870Abstract: A digital video signal processing apparatus and method for frame-based adaptive spatio-temporal Y/C separation. In the digital video signal processing apparatus, an adaptive three-dimensional bandpass filter (3D BPF) performs Y/C separation using local comb filtering/1D band pass filtering/frame comb filtering when the edge direction is fixed vertically/horizontally/temporally according to spatio-temporal local characteristics of an image using spatio-temporal filters. When the edge direction is not fixed horizontally/vertically/temporally, the 3D BPF performs 2D or 3D band pass filtering in all directions. Thus, the 3D BPF continuously carries out comb filtering, 1D band pass filtering, frame comb filtering and 2D/3D band pass filtering according to the spatio-temporal local characteristic of the image.Type: GrantFiled: January 13, 2006Date of Patent: October 20, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Sung-cheol Park, Hyung-jun Lim, Jae-hong Park, Kyoung-mook Lim, Heo-jin Byeon, Dong-suk Shin
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Patent number: 7599004Abstract: A digital video signal processing apparatus and method for detecting data in a vertical blanking interval (VBI) includes a re-sampler generating, from input video data, first re-sample data at a VBI data rate and second re-sample data with a data rate twice as high as the VBI data rate, a signal tracking unit tracking an existence of a clock run-in and a phase of the clock run-in from the second re-sample data and calculating an average of the clock run-in, and a slicer determining a logical value of the first re-sample data according to the average of the clock run-in and outputting the determined logical value as VBI data, wherein the re-sampler determines a compensation phase from the tracked phase of the clock run-in, re-samples the input video data according to the compensation phase with the VBI data rate and generates the first re-sample data.Type: GrantFiled: January 13, 2006Date of Patent: October 6, 2009Assignee: Samsung Electronics Co., Ltd.Inventors: Dong-suk Shin, Hyung-jun Lim, Jae-hong Park, Kyoung-mook Lim, Heo-jin Byeon, Sung-cheol Park
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Publication number: 20060197876Abstract: A digital video signal processing apparatus and method for adaptive spatio-temporal Y/C separation in multiple directions. In the digital video signal processing apparatus, an adaptive three-dimensional band pass filter (3D BPF) performs Y/C separation using local comb filtering/1D band pass filtering when the edge direction is fixed vertically/horizontally according to spatio-temporal local characteristics of an image using spatio-temporal filters. When the edge direction is not fixed horizontally/vertically, the 3D BPF performs 2D band pass filtering in all directions. Thus, the 3D BPF continuously carries out comb filtering, 1D band pass filtering and 2D band pass filtering according to the spatio-temporal local characteristics of the image.Type: ApplicationFiled: January 13, 2006Publication date: September 7, 2006Inventors: Sung-cheol Park, Kyoung-mook Lim, Hyung-jun Lim, Seh-woong Jeong, Jae-hong Park, Heo-jin Byeon
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Publication number: 20060197878Abstract: A circuit for reducing cross-color artifacts in video data can include three luminance/chrominance (Y/C) separator circuits each configured to provide sets of chrominance coordinates based on a respective three contiguous composite video frames. A first circumcircle calculator circuit is coupled to the three Y/C separator circuits and is configured to provide a circumcircle for a set of chrominance coordinates corresponding to the first, second and third contiguous composite video frames. A second circumcircle calculator circuit is coupled to the three Y/C separator circuits and is configured to provide a circumcircle for a set of chrominance coordinates corresponding to the second and third contiguous composite video frames and a fourth contiguous composite video frame. Related methods and computer program products are also disclosed.Type: ApplicationFiled: February 14, 2006Publication date: September 7, 2006Inventors: Hyung-jun Lim, Sung-Cheol Park, Jae-Hong Park, Kyoung-Mook Lim, Heo-Jin Byeon, Jae-Hong Park
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Publication number: 20060188154Abstract: A digital video signal processing apparatus and method for compensating a chrominance (C) signal includes receiving the C signal separated from an input video signal and compensating the C signal in at least one dimension thereof to generate a compensated C signal. A comparator may determine whether a portion of a Y signal in the input video signal is present in the C signal. The compensator may compensate the C signal only when the comparator determines a portion of the Y signal is present in the C signal. The comparator may calculate a variation between current C data of the input video signal and adjacent C data and compare the variation to a threshold value.Type: ApplicationFiled: January 9, 2006Publication date: August 24, 2006Inventors: Sung-cheol Park, Hyung-jun Lim, Jae-hong Park, Jae-hong Park, Heo-jin Byeon, Kyoung-mook Lim
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Publication number: 20060181648Abstract: A digital video signal processing apparatus and method for field-based adaptive Y/C separation includes an adaptive 3D BPF performing Y/C separation according to local comb filtering/1D band pass filtering when the edge direction is fixed vertically/horizontally in response to spatio-temporal local characteristics of an image using spatio-temporal filters. When the edge direction is not fixed horizontally or vertically, the 3D BPF performs 2D/3D band pass filtering in all directions. The 3D BPF adaptively and continuously carries out comb filtering, 1D band pass filtering and 2D/3D band pass filtering in response to the spatio-temporal local characteristics of the image.Type: ApplicationFiled: January 13, 2006Publication date: August 17, 2006Inventors: Sung-cheol Park, Hyung-jun Lim, Jae-hong Park, Kyoung-mook Lim, Heo-jin Byeon, Dong-suk Shin
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Publication number: 20060176395Abstract: A digital video signal processing apparatus and method for detecting data in a vertical blanking interval (VBI) includes a re-sampler generating, from input video data, first re-sample data at a VBI data rate and second re-sample data with a data rate twice as high as the VBI data rate, a signal tracking unit tracking an existence of a clock run-in and a phase of the clock run-in from the second re-sample data and calculating an average of the clock run-in, and a slicer determining a logical value of the first re-sample data according to the average of the clock run-in and outputting the determined logical value as VBI data, wherein the re-sampler determines a compensation phase from the tracked phase of the clock run-in, re-samples the input video data according to the compensation phase with the VBI data rate and generates the first re-sample data.Type: ApplicationFiled: January 13, 2006Publication date: August 10, 2006Inventors: Dong-suk Shin, Hyung-jun Lim, Jae-hong Park, Kyoung-mook Lim, Heo-jin Byeon, Sung-cheol Park
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Publication number: 20060176406Abstract: A digital video signal processing apparatus and method for frame-based adaptive spatio-temporal Y/C separation. In the digital video signal processing apparatus, an adaptive three-dimensional bandpass filter (3D BPF) performs Y/C separation using local comb filtering/1D band pass filtering/frame comb filtering when the edge direction is fixed vertically/horizontally/temporally according to spatio-temporal local characteristics of an image using spatio-temporal filters. When the edge direction is not fixed horizontally/vertically/temporally, the 3D BPF performs 2D or 3D band pass filtering in all directions. Thus, the 3D BPF continuously carries out comb filtering, 1D band pass filtering, frame comb filtering and 2D/3D band pass filtering according to the spatio-temporal local characteristic of the image.Type: ApplicationFiled: January 13, 2006Publication date: August 10, 2006Inventors: Sung-cheol Park, Hyung-jun Lim, Jae-hong Park, Kyoung-mook Lim, Heo-jin Byeon, Dong-suk Shin
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Digital video processing systems and methods for estimating horizontal sync in digital video signals
Publication number: 20060170821Abstract: Video signal processing systems and methods for detecting horizontal synchronization signals within video signals. Digital filtering methods are implemented for processing analog video signals to determine time varying characteristics of video signals to detect the starting and ending positions of horizontal synchronization pulses in a video signal with increased accuracy. In addition, adaptive methods are implemented for dynamically determining various video signal parameters over time, such as blanking level BL, threshold value (slice) level and synchronization level SL using information extracted from digitally filtered video signals.Type: ApplicationFiled: December 8, 2005Publication date: August 3, 2006Inventors: Kyoung-mook Lim, Heo-jin Byeon, Hyung-jun Lim, Seh-woong Jeong, Jae-hong Park, Sung-cheol Park -
Publication number: 20060170826Abstract: An adaptive digital video signal processing apparatus and method for Y/C separation. In the video signal processing apparatus, an adaptive 2D BPF carries out Y/C separation through comb filtering and bandpass filtering selected according to local characteristics of an image (e.g., based on the direction in which an edge in the image extends in vertical and horizontal directions. The adaptive 2D BPF performs 2D bandpass filtering in general case. The 2D BPF adaptively executes a series of selections of the various filtering operations in a continuous manner.Type: ApplicationFiled: January 13, 2006Publication date: August 3, 2006Inventors: Sung-Cheol Park, Hyung-Jun Lim, Jae-Hong Park, Kyoung-Mook Lim, Heo-Jin Byeon, Eui-Jin Kwon
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Publication number: 20060152625Abstract: Sync positions are detected from a video signal. The detected sync positions are processed (e.g., averaged) to generate modified sync positions. The detected sync positions and the modified sync positions are selectively used to sample and synchronize a color signal derived from the video signal. For example, the detected sync positions and the modified sync positions may be selectively used to sample and synchronize the color signal responsive to differences between the modified sync positions. The invention may be embodied as apparatus and/or methods.Type: ApplicationFiled: December 20, 2005Publication date: July 13, 2006Inventors: Heo-jin Byeon, Kyung-mook Lim, Hyung-jun Lim, Jae-hong Park, Sung-cheol Park, Eui-jin Kwon
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Publication number: 20060152623Abstract: A digital processing system and method for tracking a subcarrier included in a video signal are provided, where a phase comparator tracks the phase of a color burst signal based on predetermined supposed phases, Y/C separation and demodulation are carried out based on a compensation phase that is updated by a phase compensator in response to the tracked phase, and the Y/C separation and demodulation are performed based on a compensation frequency determined by a frequency compensator by checking short-term and long-term variations in the updated compensation phase.Type: ApplicationFiled: December 19, 2005Publication date: July 13, 2006Inventors: Heo-Jin Byeon, Kyoung-Mook Lim, Hyung-Jun Lim, Seh-Woong Jeong, Jae-Hong Park, Sung-Cheol Park