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7619690 |
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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7619689 |
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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7567724 |
Image processing apparatus, image processing method, program of image processing method, and recording medium in which program of image processing method has been recorded
The present invention is applied, for example, to resolution conversion. An edge gradient direction v 1 with the largest gradient of pixel values and an edge direction v 2 orthogonal to the edge...
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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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7551694 |
Limiter based analog demodulator
A limiter based analog demodulator includes a power amplifier receiving a base-band signal and a local clock operating at the base-band frequency. A first multiplier receives an output from the...
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7526707 |
Method and apparatus for encoding and decoding data using a pseudo-random interleaver
A pseudo-random bit interleaver and de-interleaver comprising a source for generating pseudo-random numbers and transformation logic that transforms each pseudo-random number generated by the...
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7505515 |
Accurate timing alignments for decision directed continuous time equalizers
A continuous time equalizer for equalizing an input signal using a feedforward equalizer portion and a feedback equalizer portion is provided that includes: a slicer operable to make bit decisions...
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7499109 |
Method and apparatus for receiving digital television signals using space diversity and beam-forming
A receiver that receives radio signals, and a method for the same. The radio signals may be received by a plurality of antennas and then demodulated by respective converter devices, an estimated...
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7480009 |
Synchronization signal detection in a digital television receiver
A digital television (DTV) receiver is provided, comprising: a demodulator that demodulates television signals and outputs equalizer training signals in the form of real (I) and imaginary (Q) data;...
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7471341 |
Apparatus, methods, and articles for a blind ghost cancellation on an SD video
A ghost image cancellation technique for video signals received from multipaths during transmission of a TV signal over a transmission channel. In one example embodiment, an apparatus computes edge...
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7450613 |
Digital transmission system with enhanced data multiplexing in VSB transmission system
A digital Vestigial Sideband (VSB) transmission system and enhanced data multiplexing method are disclosed. When 1/2 enhanced data coded at a rate of 1/2 and 1/4 enhanced data at a rate of 1/4 are...
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7352408 |
Suppression of multipath effects in the transmission of analog TV signals
A method for compensating for multipath effects when receiving a vestigial sideband modulated TV signal, one portion of the spectrum of the undistorted TV signal being symmetrical with respect to a...
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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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7312833 |
Channel equalizing apparatus and method for digital television receiver
Disclosed is a channel equalizing apparatus and method for a digital television receiver that performs channel equalization using equalizing algorithms. The channel equalizing apparatus includes a...
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7307666 |
Transmitter identification system
The invention relates to a transmitter identification system, which utilizes an identification signal embedded into a digital television signal, enabling the transmitter of origin to be identified...
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7304687 |
Ghost cancellation system using wavelet processed ghost cancellation reference signal
Disclosed is a ghost cancellation system based on an enhanced ghost cancellation reference signal for noisy environments. The received analog television signal is first subjected to a digitization...
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7298420 |
Digital TV receiver
Disclosed is a digital TV receiver, in which a symbol synchronization signal and a carrier signal are compensated by detecting multipath channel information. The present invention compensates a...
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7298396 |
Apparatus and method for monitoring transmission systems using embedded test signals
A monitoring system for an RF transmission system, such as a multi-channel television broadcasting antenna feed system, gathers data about the physical and electrical condition of the RF...
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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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7203232 |
Apparatus and method for adjusting filter tap length of adaptive equalizer by using training sequence
An apparatus and method for adjusting the filter tap length of an adaptive equalizer using a training sequence, determining a required filter tap length by using multipath information detected from...
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7202914 |
Digital television transmitter identification system using pseudo-random sequences
The invention relates to a transmitter identification system, which utilizes an identification signal embedded into a digital television signal, enabling the transmitter of origin to be identified...
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7190409 |
Method for displaying an image having a maximal brightness
An electro-optical device and a method for displaying an image are disclosed. A clear image with a clear profile can be displayed therein by processing input image data, for example input image...
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7180552 |
Channel equalizer in digital TV receiver
Channel equalizer of VSB modulation system in a digital TV receiver, including a frequency domain equalizer for equalizing a received signal to remove a distorted component from the received...
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7164932 |
Millimeter band signal transmitting/receiving system having function of transmitting/receiving millimeter band signal and house provided with the same
A millimeter band transmitter transmits one or more indirect path signal waves from the main lobe of a transmit antenna, and a direct path signal wave is transmitted in a side lobe of the transmit...
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7151573 |
Channel equalizer and digital television receiver using the same
Disclosed are a channel equalizer and digital television receiver using the same. The equalizer comprises a channel estimator, a channel distortion compensator and noise canceller. The channel...
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7151559 |
Reception performance measuring apparatus for television signal
When a TS (Transport Stream) generator generates a TS, the TS is modulated by a signal modulator and outputted to a tuner set. In the tuner set, various noises generated by a noise source are added...
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7139336 |
Method and system for channel estimation using iterative estimation and detection
A method and system are directed to enabling a detector to perform relatively accurate channel estimates on blocks of data that include relatively short training sequences in wireless communication...
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7126646 |
Device and method for tracking phase error in digital TV receiver
Device and method for tracking a phase error in a digital TV receiver, wherein a phase noise compensated I signal is subtracted from I level reference signals of VSB signal, to obtain an error of...
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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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7038733 |
Television receivers and methods for processing signal sample streams synchronously with line/frame patterns
Television receivers receieve a television signal and downconvert the television signal to generate a complex baseband signal. The complex baseband signal is differeniated and then integrated to...
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7038732 |
DTV signal with GCR components in plural-data-segment frame headers and receiver apparatus for such signal
A DTV signal has a plural-data-segment frame header including complementary first and second ghost-cancellation reference signals differentially delayed by the duration of two NTSC horizontal scan...
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7038731 |
Adaptive equalizer method and apparatus for American ATSC system
An equalization method and device for equalizing the received vestigial sideband (VSB) signal, utilizes segment-sync symbols, Sato directions, erasure slicers, and variable step-sizes. In addition...
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7034893 |
Method and apparatus for reception of terrestrial digital television signals
A digital television signal is intercepted by a plurality of antennas to produce a corresponding plurality of input signals. The antennas have different directionality so they can be combined in a...
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7031414 |
Combined feedforward filter for a decision feedback equalizer
A method and apparatus for mitigating for inter-symbol interference in a communication system using a multi-rate adaptive decision feedback equalizer (DFE) with a feedforward filter which is a...
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6952238 |
Method and apparatus for echo cancellation in digital ATV systems using an echo cancellation reference signal
A novel echo cancellation reference (“ECR”) training signal is inserted into the current ATSC 8 VSB data stream to achieve improved echo rejection while maintaining compatibility with the ATSC...
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6937649 |
Ghost eliminating equalizer
An equalizer substantially eliminates a ghost of a received main signal by (i) applying coefficients b (where b may be equal to one) to the received main signal and the ghost in order to modulate...
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6937292 |
Ghost cancellation reference signal with bessel chirps and PN sequences, and TV receiver using such signal
Composite ghost cancellation reference (GCR) signals that make available both a chirp and a PN sequence during the same VBLI in each successive field facilitates the more rapid and efficient...
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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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6894728 |
Method for equalizing a VSB high definition television signal in the presence of co-channel interference
A method and apparatus for equalizing a signal containing high definition television information in the presence of co-channel NTSC interference employs an equalizer having feed forward and...
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6829392 |
System and method for providing an image deghosting circuit in an electroptic display device
The present invention provides an image processing circuit for use in an electrooptic device having a plurality of scanning lines, a plurality of data lines, switching elements which are...
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6823489 |
Generation of decision feedback equalizer data using trellis decoder traceback output in an ATSC HDTV receiver
For use in a receiver capable of decoding trellis encoded signals of the type comprising a trellis decoder and a decision feedback equalizer coupled to each path memory output of said trellis...
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6816204 |
Ghost cancellation reference signals for broadcast digital television signal receivers and receivers for utilizing them
Broadcast DTV signals are improved by including in each of their successive data fields a training signal for the adaptive channel-equalization and echo-cancellation filtering in receivers. The...
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6806910 |
Processing multiple streams of data encoded in respective VBI channels with a shared equalizer
A circuit for recovering the data encoded in several VBI channels without requiring a large number of gates. An analog to digital converter (ADC) and a clock and data recovery circuit may be...
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6801867 |
Combining signal images in accordance with signal-to-noise ratios
Combining signal images includes receiving signal images and performing the following to yield a weighted sum for at least one signal image. A phasor is generated from a signal image in accordance...
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6768517 |
Repetitive-PN1023-sequence echo-cancellation reference signal for single-carrier digital television broadcast systems
DTV signals transmitted over the air with a symbol rate of around 10.76 million samples per second include echo-cancellation reference (ECR) signals each of which includes or essentially consists...
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6760078 |
Digital filtering of DTV I-F signal to avoid low-end boost of the baseband signal resulting from in-phase synchrodyne
In a radio receiver for digital television signals a digital filter supplies the in-phase synchrodyning circuitry a shaped spectral response to the digitized I-F signal. The...
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6734920 |
System and method for reducing error propagation in a decision feedback equalizer of ATSC VSB receiver
For use in a receiver capable of decoding trellis encoded signals, there is disclosed an apparatus and method for reducing error propagation in a decision feedback equalizer. The apparatus of the...
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6704059 |
Partial fractionally spaced channel equalizer for digital television
A partial fractionally spaced equalizer for a digital television includes, a feedforward filter unit for receiving an input signal sampled at a predetermined frequency, which is divided a first...
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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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6573948 |
Equalizing intermediate-frequency signals before demodulating them in a digital television receiver
Adaptive passband equalization filtering comprises in addition to a non-iterative portion, an iterative filtering portion to suppress longer-delayed post-ghosts. This iterative filtering portion...
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