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Class Information
Number: 348/607
Name: Television > Image signal processing circuitry specific to television > Noise or undesired signal reduction
Description: Subject matter including specific circuitry for the elimination of unwanted signals generated in the system, or by the transmission medium.










Sub-classes under this class:

Class Number Class Name Patents
348/615 Blackspot or shading correction (e.g., corrects for fixed pattern defects) 124
348/616 Dropout compensator (e.g., replacement type) 147
348/624 For color television 170
348/618 For removal of low amplitude random noise (e.g., variable bandwidth) 110
348/614 Ghost elimination (e.g., multipath) 335
348/608 Processing at encoder or transmitter (e.g., pre-correction) 156


Patents under this class:
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Patent Number Title Of Patent Date Issued
6418164 Adaptive equalizer with enhanced error quantization Jul. 9, 2002
6400393 DTV receiver with filter in I-F circuitry to suppress FM sound carrier of NTSC Co-channel interfering signal Jun. 4, 2002
6400415 System and method for predistorting signals to be amplified Jun. 4, 2002
6392718 Device and method for preventing flicker May. 21, 2002
6388701 Device and method for removing co-channel interference signal in modulation/demodulation receiver having reference signal May. 14, 2002
6384858 Suppression of co-channel NTSC interference artifacts when extracting training signal for a DTV receiver equalizer May. 7, 2002
6384864 Letter-box filtering circuit and method using the same May. 7, 2002
6380985 Resizing and anti-flicker filtering in reduced-size video images Apr. 30, 2002
6377299 Video quality abnormality detection method and apparatus Apr. 23, 2002
6377311 Method for compensating video signal interferences using concomitantly transmitted digital data Apr. 23, 2002
6377312 Adaptive fractionally spaced equalizer for received radio transmissions with digital content, such as DTV signals Apr. 23, 2002
6369859 Patching degraded video data Apr. 9, 2002
6363118 Apparatus and method for the recovery of compression constants in the encoded domain Mar. 26, 2002
6359658 Subjective noise measurement on active video signal Mar. 19, 2002
6360025 Image processing method for reducing the noise in an image of a sequence of three temporal images, and medical imaging apparatus for carrying out such a method Mar. 19, 2002
6356302 Apparatus for measuring S/N ratio of composite video signal Mar. 12, 2002
6346970 Two-dimensional adjustable flicker filter Feb. 12, 2002
6347118 Image processing apparatus having means for controlling exposure using an orthogonal transformation coefficient Feb. 12, 2002
6344871 NTSC interference rejection filter Feb. 5, 2002
6335990 System and method for spatial temporal-filtering for improving compressed digital video Jan. 1, 2002
6333764 Video signal luminance and chrominance separation Dec. 25, 2001
6330037 Picture signal processing method for processing a picture signal containing information including main picture portion and non-picture portions Dec. 11, 2001
6327307 Device, article of manufacture, method, memory, and computer-readable memory for removing video coding errors Dec. 4, 2001
6320622 De-emphasis filter with integrated determination of achromatic values Nov. 20, 2001
6317158 Method and apparatus for positioning an input image into interlaced video Nov. 13, 2001
6307888 Method for estimating the noise level in a video sequence Oct. 23, 2001
6285411 Circuit for video moire reduction Sep. 4, 2001
6285710 Noise estimation and reduction apparatus for video signal processing Sep. 4, 2001
6285801 Non-linear adaptive image filter for filtering noise such as blocking artifacts Sep. 4, 2001
6281934 Data slicing device and data slicing method for extracting data from a signal Aug. 28, 2001
6281942 Spatial and temporal filtering mechanism for digital motion video signals Aug. 28, 2001
6281946 Television receiver Aug. 28, 2001
6268888 Mechanism for adaptive selection of anti-ghosting filtering Jul. 31, 2001
6256352 TCM decoder and decoding method thereof Jul. 3, 2001
6249321 Device and method for correcting color distortion on TV receiver Jun. 19, 2001
6246447 Video format adaptive beam size for video moire reduction Jun. 12, 2001
6246554 Surge protector for a video display apparatus Jun. 12, 2001
6239847 Two pass multi-dimensional data scaling arrangement and method thereof May. 29, 2001
6229560 Method of and apparatus for determining co-channel interference in digital television system May. 8, 2001
6229577 Ambient light-dependent video-signal processing May. 8, 2001
6229578 Edge-detection based noise removal algorithm May. 8, 2001
6226049 NTSC rejection filter May. 1, 2001
6226050 Signal adaptive filtering method for reducing ringing noise and signal adaptive filter May. 1, 2001
6226051 Digital video signal filtering to produce a double-sided impulse response May. 1, 2001
6222592 TV receiver equalizer storing channel characterizations for each TV channel between times of reception therefrom Apr. 24, 2001
6219088 NTSC interference rejection filter Apr. 17, 2001
6219095 Noise measurement system Apr. 17, 2001
6219105 Video signal processing apparatus Apr. 17, 2001
6204890 Noise reducer using memory Mar. 20, 2001
6201563 Trellis code modulation decoder structure for advanced digital television receiver Mar. 13, 2001

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