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Class Information
Number: 348/618
Name: Television > Image signal processing circuitry specific to television > Noise or undesired signal reduction > For removal of low amplitude random noise (e.g., variable bandwidth)
Description: Subject matter including a specific circuitry for reducing small amplitude differences between pixels without, in general, significantly altering large amplitude differences.

Sub-classes under this class:

Class Number Class Name Patents
348/619 Averaging type 84
348/623 Coring type 56
348/622 Noise component generator, limiter, subtractor type 126

Patents under this class:
1 2 3

Patent Number Title Of Patent Date Issued
8675137 Apparatus and method for adaptive filtering Mar. 18, 2014
8654257 Image processing apparatus, projector, image processing method, and method for controlling image processing apparatus Feb. 18, 2014
8654258 Method and apparatus for estimating noise in a video signal Feb. 18, 2014
8654259 Image processing system and display device Feb. 18, 2014
8610800 Image processing device and method for detecting and correcting pattern noise Dec. 17, 2013
8363166 Image quality improving device and method Jan. 29, 2013
8358871 Method and device for detecting and correcting skewed image data Jan. 22, 2013
8335392 Method for reducing image artifacts Dec. 18, 2012
8334932 Image processing device, image display device, and image processing method Dec. 18, 2012
8289451 Method and apparatus for automatic reduction of noise in signals transmitted over conductors Oct. 16, 2012
8284313 Apparatus and method for determining noise Oct. 9, 2012
8279345 System and method for random noise estimation in a sequence of images Oct. 2, 2012
8270756 Method for estimating noise Sep. 18, 2012
8264614 Systems and methods for video processing based on motion-aligned spatio-temporal steering kernel regression Sep. 11, 2012
8237870 Receiver system for multiple bandwidth television channels Aug. 7, 2012
8212932 Video noise estimator Jul. 3, 2012
8180169 System and method for multi-scale sigma filtering using quadrature mirror filters May. 15, 2012
8169546 Technique for tuner automatic gain control circuit for mobile television applications May. 1, 2012
7995149 Subjectively weighted noise measurement Aug. 9, 2011
7970234 Post-processing circuit for processing an image signal according to frequency components of the image signal Jun. 28, 2011
7808557 Method and apparatus for automatic reduction of noise in video transmitted over conductors Oct. 5, 2010
7724307 Method and system for noise reduction in digital video May. 25, 2010
7663701 Systems, methods, and apparatus for noise reduction Feb. 16, 2010
7657113 Auto-regressive method and filter for denoising images and videos Feb. 2, 2010
7471344 Display apparatus periodically modulating image-signal characteristics Dec. 30, 2008
7450181 Bit-depth extension with models of equivalent input visual noise Nov. 11, 2008
7428020 Method and apparatus for noise reduction of video signals Sep. 23, 2008
7319494 System and method for reducing noise in images Jan. 15, 2008
7280161 Noise reduction circuit and method Oct. 9, 2007
7158189 Adaptive non-linear noise reduction techniques Jan. 2, 2007
7034831 System and method for generating a low discrepancy curve in a region Apr. 25, 2006
6995774 Display system and method of diminishing unwanted artifacts Feb. 7, 2006
6987542 Detection and correction of asymmetric transient signals Jan. 17, 2006
6958783 Adaptive non-linear noise reduction techniques Oct. 25, 2005
6933983 System and method for reducing noise in images Aug. 23, 2005
6909469 Interlace motion artifact detection using vertical frequency detection and analysis Jun. 21, 2005
6710811 Data processing device Mar. 23, 2004
6700623 Video signal processing using triplets of pixels Mar. 2, 2004
6621525 Double tapered roller of scroll thrust bearing Sep. 16, 2003
6611295 MPEG block detector Aug. 26, 2003
6563548 Interlace noise filter May. 13, 2003
6496605 Block deformation removing filter, image processing apparatus using the same, method of filtering image signal, and storage medium for storing software therefor Dec. 17, 2002
6493039 Method and apparatus for white noise reduction in video images Dec. 10, 2002
6490008 Method for removing a checkerboard-like noise artifact from a captured composite NTSC video frame Dec. 3, 2002
6441867 Bit-depth extension of digital displays using noise Aug. 27, 2002
6359658 Subjective noise measurement on active video signal Mar. 19, 2002
6335990 System and method for spatial temporal-filtering for improving compressed digital video Jan. 1, 2002
6310660 Video signal dropout detector Oct. 30, 2001
6285411 Circuit for video moire reduction Sep. 4, 2001
6259489 Video noise reducer Jul. 10, 2001

1 2 3

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