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7605838 |
Broadcast signal receiving apparatus and method of filtering noise signals
Broadcast signal-receiving apparatus and a method filtering noise signals. The broadcast signal-receiving apparatus includes a tuner to convert an RF signal to a lower frequency signal to output an...
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7589758 |
Apparatus and method for detecting and selectively filtering co-channel interference
Method and apparatus for use with digital television receivers are included among the embodiments. In exemplary systems, the presence of an interfering analog television signal (e.g., an NTSC...
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7567298 |
Apparatus and method for detecting NTSC co-channel interference
A television set includes an ATSC (Advanced Television Systems Committee) receiver, which includes an NTSC (National Television Systems Committee) co-channel interference detector based on carrier...
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7554609 |
Method and apparatus for detecting and rejecting NTSC Interference in ATSC system
A method and apparatus for rejecting an interference signal from an input frequency spectrum. The method includes the steps of receiving the input signal; frequency-shifting the received input...
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7539252 |
Communications system with baseband pilot injected carrier (BPIC) modulation/demodulation and frame recovery and related methods
A communications system may include a transmitting device for transmitting a modulated signal therefrom based upon input data, and a receiving device for receiving the modulated signal from the...
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7460147 |
Interference detecting circuit utilizing synchronization symbols and method thereof
An interference detecting circuit for use in an ATSC system and for detecting interference of an ATSC signal includes: a buffering module for delaying to output a first PN 63 synchronization...
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7375741 |
Circuit and method for eliminating image interfering with desired channel
A circuit and a method for eliminating interference introduced from an image channel into a desired channel is described. The circuit includes a splitter and an adder. The splitter generates...
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7369155 |
Apparatus and method for rejecting co-channel interference signal
Methods and television receivers for rejecting a co-channel interference signal from a first digital signal. A first digital signal is delayed to output a first delayed signal. In this method, an...
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7327403 |
VSB reception system with enhanced signal detection for processing supplemental data
A VSB reception system includes a sequence generator for decoding a symbol corresponding to the supplemental data and generating a predefined sequence included in the supplemental data at VSB...
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7239358 |
Television receiver for digital signals with offset tuning provisions
A television receiver for receiving digital and analog signals that reduces adjacent channel interference when receiving digital signals susceptible to interference caused by a lower adjacent NTSC...
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7224400 |
Sharp-tuned filter-combiner for combining adjacent TV channels
A filter-combiner for combining television signals from adjacent channels is presented herein. The combiner has two inputs that respectively receive an NTSC combined visual and aural signal and a...
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7218357 |
Parallel structure NTSC rejection filter and filtering method
Method and apparatus for use with digital television receivers are included among the embodiments. In exemplary systems, components of an interfering analog television signal (e.g., an NTSC signal)...
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7161613 |
NTSC interference rejection filter
An electronic, programmable filter is disclosed which selectively removes interference, noise or distortion components from a frequency band without perturbing any of the other signals of the band....
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7136113 |
Digital television receiver and method of controlling antenna of the same
Disclosed is an antenna controller of a digital television receiver and a controlling method thereof including an antenna receiving channel signals of digital television broadcasting and having a...
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7133476 |
Apparatus and methods for suppression of interference among disparately-modulated signals
Information is recovered from a composite signal including first and second component signals modulated according to respective first and second modulations, for example, 8-PSK and GMSK. The...
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7092036 |
Equalizer system including a comb filter in an HDTV system
An equalizer ( 34 ) and a prefilter ( 1 ) used in conjunction with a comb filter ( 2 ) in a High Definition Television (HDTV) system. The prefilter ( 1 ) may be placed before the comb filter ( 2 ),...
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7030901 |
Methods and apparatus for removing NTSC signals from a digital television signal
A method and apparatus for removing national television system committee (NTSC) signals from a broadcasted datastream including advanced television system committee (ATSC) signals are provided. The...
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7015981 |
Television signal transmitter capable of eliminating occurrence of adverse influences caused by interference signals
A television signal transmitter is arranged by a first frequency converter for up-converting an input signal into an intermediate frequency signal, and a second frequency converter for...
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7012637 |
Capture structure for alignment of multi-camera capture systems
A multi-camera capture system is aligned using a capture system so that a subject remains in the field of view of a camera. In one embodiment of the present invention, the multi-camera system...
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6947487 |
VSB communication system
A VSB communication system comprises a VSB transmission system and a VSB reception system. The VSB transmission system multiplexes a coded MPEG data and a coded supplemental data having a null...
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6933986 |
Sharply tuned bandpass filter
A sharply tuned bandpass RF filter is presented herein. The filter has an input port for receiving television RF signals and passing same to an output port for application to a load. The filter is...
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6934777 |
Terminal device, apparatus and method for controlling a terminal device, and method of controlling a process in a terminal device
A terminal control apparatus 1 for causing various terminal devices to perform appropriate operations. The terminal control apparatus comprises a communication section 11, a control section ...
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6900828 |
Fade resistant digital transmission and reception system
In a digital broadcast communications system, a higher priority component and a lower priority component are broadcast from a transmitter to a receiver. Each of these components generates a main...
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6809609 |
Device for preventing mixing of extrinsic noise and protector
A two-staged coupling transformer comprised of an up-stream coupling transformer and a down-stream coupling transformer are successively provided between an input terminal and an output terminal,...
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6697098 |
Co-channel interference detection network for an HDTV receiver
A receiver for processing a VSB modulated signal containing terrestrial broadcast high definition television information and a pilot component includes an input analog-to-digital converter ( 19 )...
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6667760 |
Receiver for digital television signals having carriers near upper frequency boundaries of TV broadcasting channels
In a receiver for receiving digital television (DTV) signals with carriers near the upper frequency boundaries of TV broadcasting channels, co-channel interfering NTSC video carrier and its lower...
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6650375 |
Television signal transmitter for eliminating interference caused by differential signal of two frequency converters
The frequency converters have first mixers for frequency converting input intermediate frequency band television signals into first intermediate frequency band television signals, first local...
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6647069 |
Method and apparatus for capacity increase and enhanced communications performance in CATV networks
In a cable television (CATV) data communication network, channel throughput and communications robustness are increased in a manner that improves speed of data transmission while maintaining...
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6633325 |
Co-channel interference canceler in simulcast receiver and method thereof
A device for canceling co-channel interference and a method thereof are provided. The device, in a simulcast receiver for receiving a high definition television (HDTV) signal having a digital...
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6621527 |
Digital receiver with match filter responsive to field synchronization code in the final I-F signal envelope
A radio receiver for receiving a selected digital TV signal uses final intermediate frequency signals the carrier frequencies of which are multiples of symbol rate. The radio receiver has a match...
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6617940 |
System and method for feeding multiple broadcast antennas utilizing a single feed line
A system and method for utilizing a single feed line for feeding multiple UHF, VHF, and FM broadcast antennas. The system and method employ notch, lowpass, and bandpass filters in conjunction with...
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6597751 |
Method of displaying signals in the presence of inter symbol interference
Display of signals containing inter-symbol interference (ISI). An input signal is modeled as comprising an ideal signal plus ISI plus error. In a first embodiment of the invention, an error signal...
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6559898 |
Low cost VBS encoder and RF modulator for supplying VSB baseband signal to RF input of digital television receiver
An encoder-modulator for coupling a digital baseband television signal to a VSB digital television receiver that includes filters, equalization circuitry, and forward error correction circuitry for...
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6549242 |
Combining adjacent TV channels for transmission by a common antenna
Television signals from adjacent channels are broadcast with a common antenna. First television signals from a first channel are selected from a first frequency band including a plurality of...
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6542561 |
Information receiving device and method
The present invention discloses a device and method for eliminating an interfering wave and determining the best orientation for an antenna. A SAW (surface acoustic wave) filter employed in the...
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6515713 |
Method and apparatus which compensates for channel distortion
A method and apparatus for compensating for channel distortion is disclosed. In the present invention, equalization is performed in the treating sequence mode when the moving ghost does not exist...
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6480233 |
NTSC co-channel interference detectors responsive to received Q-channel signals in digital TV signal receivers
An NTSC co-channel interference detector ( 44 ) detects the presence of an interfering NTSC signal in the received Q-channel signal that is orthogonal to the received I-channel signal, rather than...
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6480237 |
Vestigial sideband mode detection apparatus in digital television receiver
A method and system for detecting a VSB mode in a digital TV receiver is disclosed. The system includes first and second VSB mode detectors implemented before and after a channel equalizer. The...
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6456316 |
Apparatus for judging if co-channel interference exists in digital TV receiver
An apparatus for judging if a co-channel interference exists in a digital TV receiver is disclosed. The TV receiver includes a comb filter for removing NTSC interference of input data, and a...
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6449002 |
Truncated metric for NTSC interference rejection in the ATSC-HDTV trellis decoder
In a system for receiving a signal containing digital data representing HDTV image information in the form of multilevel symbols formatted into groups of successive fields, each field comprising a...
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6441843 |
Suppression of effects of co-channel NTSC interference artifacts upon digital TV receiver adaptive equalizer
Adaptive equalizers for digital TV receivers in which the filter parameters are adjusted by decision-feedback are followed in cascade by filters for suppressing unwanted demodulation artifacts of...
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6437837 |
Digital broadcast signal processing apparatus and method in which channel interference by analog broadcast is prevented
A video signal processing apparatus and method, and more particularly, digital broadcast signal processing apparatus and method in which channel interference by an analog broadcast is prevented,...
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6426780 |
DTV receiver with low-band final I-F signal filtered for suppressing co-channel interfering NTSC audio carrier
A digital television receiver converts very-high-frequency intermediate-frequency digital television signal to a band with uppermost frequency in the lower portion of the high-frequency range. This...
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6421077 |
Method and apparatus for detecting co-channel interference and selectively filtering the interference when detected
A method and apparatus for detecting the presence of a co-channel interference signal and, in response to detecting such an interference signal, utilizing a co-channel interference rejection...
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6400393 |
DTV receiver with filter in I-F circuitry to suppress FM sound carrier of NTSC Co-channel interfering signal
The frequency-modulated sound carrier of any co-channel interfering NTSC television signal that accompanies multiple-level symbols in a digital receiver, such as a digital television receiver, is...
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6388701 |
Device and method for removing co-channel interference signal in modulation/demodulation receiver having reference signal
A modulation/demodulation receiver having a reference signal in a digital communication system. A method for signal processing and co-channel interference signal removal in the receiver includes...
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6384858 |
Suppression of co-channel NTSC interference artifacts when extracting training signal for a DTV receiver equalizer
A digital television receiver has an equalizer filter and demodulates received ATSC digital television signal to recover a baseband signal. The ATSC digital television signal is subject to being...
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6380969 |
DTV receiver symbol decoding circuitry with co-channel NTSC artifacts suppression filter before data slicer
A data slicer for use in a digital television signal receiver in a television set or in a digital video recorder includes digital filtering for suppressing artifacts of NTSC co-channel interference...
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6377312 |
Adaptive fractionally spaced equalizer for received radio transmissions with digital content, such as DTV signals
In a radio receiver for digital transmissions, an adaptive channel equalizer is clocked at a sampling rate higher than symbol rate by a factor k and employs decision feedback for adjusting the...
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6366629 |
Method of estimating timing phase and rate offsets in digital data
A method of estimating symbol timing phase and rate offsets of a sampled digitally modulated signal having repetitive symbol sync sequences includes the steps of estimating symbol sync sequence...
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