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Class 348/21 - PLURAL TRANSMITTER SYSTEM CONSIDERATIONS (E.G., INTERFERENCE REDUCTION)


Subclass of Class 348 - Television
Definition: Subject matter including two or more transmitters with means
No. of patents: 198
Last issue date: 10/20/2009


1          
NumberTitleIssue Date
7605838Broadcast 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 intermediate frequency (IF) signal, a filter to filter the IF signal...
10/20/2009
7589758Apparatus 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 signal) in the same channel as a DTV signal is verified by detecting the p...
09/15/2009
7460147Interference 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 PN63 synchronization format data when receiving the first PN63 synchronization form...
12/02/2008
7375741Circuit 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 signals split from a received signal having frequency components within the...
05/20/2008
7369155Apparatus 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 synthesized interference signal is generated based on the first digita...
05/06/2008
7349502Digital communication system and method for operating the system which can improve equalization performance according to channel state
A digital communication system having an improved equalization performance according to a channel state and a method for operating the system are disclosed. The digital communication system includes: a channel state judging section; and an equalizing section for com...
03/25/2008
7336745Methods and apparatus to provide communication protection technology for satellite earthstations
An interference signal canceling system for communications protection is described for canceling interference signals from earth station received signals using a two input adaptive cancellation network. The present invention addresses terrestrial, co-channel and adj...
02/26/2008
7333155Quadratic video demodulation with baseband nyquist filter
A television tuner is fully implemented on a monolithic integrated circuit. The television tuner includes a baseband SAWF function fully integrated in silicon. The SAWF function includes trap and bandpass filters. A video demodulation circuit includes an I, Q demodu...
02/19/2008
7327403VSB 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 transmission system. The reception system also includes a modified legacy ...
02/05/2008
7319495VSB 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 transmission system. The reception system also includes a modified legacy ...
01/15/2008
7317491VSB 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 transmission system. The reception system also includes a modified legacy ...
01/08/2008
7317492VSB 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 transmission system. The reception system also includes a modified legacy ...
01/08/2008
7312833Channel 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 channel equalizing section for compensating for channel distortion us...
12/25/2007
7313811Optical conversion device
A residential gateway (RG) for distributing video, data and telephony services to multiple devices within a residence is disclosed. The RG receives signals from a telecommunications network, converts the signals to formats compatible with the multiple devices, and t...
12/25/2007
7310505Attenuation control for tuners
A tuner includes an RF input with a signal level controller such as an attenuator that is provided to attenuate a signal from the RF input. A tunable RF filter provides RF band limiting and determines simultaneously the AGC bandwidth. An amplifier with resistive fee...
12/18/2007
7298422VSB 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 transmission system. The reception system also includes a modified legacy ...
11/20/2007
7298421VSB 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 transmission system. The reception system also includes a modified legacy ...
11/20/2007
7295634Portable communication device and method therefor
Briefly, in accordance with one embodiment of the invention, a portable communication device includes a quantization unit comprising an analog-to-digital converter and a signal generator. The output signal of the analog-to-digital converter may be adjusted to provid...
11/13/2007
7292648Precoding for a non-linear codec
A precoding system to achieve rates higher than 33.6 kbps in the analog modem to digital modem direction. The preceding system modifies the standard THP algorithm to adapt it for use in PCM modems. Instead of an arithmetic modulo operation that is implemented in the...
11/06/2007
7289162VSB 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 transmission system. The reception system also includes a modified legacy ...
10/30/2007
7286620Equalizer for reduced intersymbol interference via partial clock switching
A method and system for is disclosed for reducing intersymbol interference in a stream of data bits to be transmitted over a transmission medium. Aspects of the present invention include a phase delayed clock generated from a reference clock that produces an edge on...
10/23/2007
7259797VSB 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 transmission system. The reception system also includes a modified legacy ...
08/21/2007
7256839VSB 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 transmission system. The reception system also includes a modified legacy ...
08/14/2007
7242424Digital TV receiving smart antenna control system and controlling method of the same
Disclosed is a digital TV smart antenna system and controlling method of the same, the system converges a smart antenna into an optimal reception by detecting a maximum signal power in a signal acquisition process for a fast acquisition performance and selectively a...
07/10/2007
7239358Television 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 signal. Upon receiving the digital signal, the receiver heterodynes t...
07/03/2007
7236519Transceiving filter and communication device
First and second transmission paths are provided between a first port to which an antenna is connected and a second port to which a transceiving circuit is connected. First to fourth reception filters, an amplifier circuit, and first to fourth hybrid circuits are pr...
06/26/2007
7224400Sharp-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 DTV signal wherein the NTSC signal and the DTV signal are in adjacent ...
05/29/2007
7218357Parallel 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) in the same channel as a DTV signal are separately estimated and can...
05/15/2007
7215930Method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication
A method and apparatus for providing uplink signal-to-noise ratio (SNR) estimation in a wireless communication system. A first signal is received over a first channel and a second signal is received over a second channel, where the second signal is received at a hig...
05/08/2007
7211958Modulation of a background light or any illumination of a mobile phone
A communication device such as a cellular or wireless telephone handset has a light display, such as handset cover light or display backlight, synchronized to audio signals from multiple audio sources such as a microphone or AM/FM receiver. The communication device ...
05/01/2007
7212563Real-time locating system and method using timing signal
A location system includes a plurality of signal readers for receiving signals from a wireless transmitter to be located. The signals include a wideband, spread spectrum signal and a timing marker appended a predetermined time in front of the wideband, spread spectr...
05/01/2007
7203232Apparatus 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 correlation values of sync symbols of a segment for data synchroniza...
04/10/2007
7200193Quadrature vestigial sideband digital communications method and system with correlated noise removal
A quadrature vestigial-sideband (QVSB) method and system with correlated noise removal are embodied in a QVSB receiver with a correlated-noise estimator-subtractor configured to obtain I/Q channel correlated noise estimates for receive-filtered I/Q signals in the QV...
04/03/2007
7199843Spectral translation for VSB compensation
A system for providing spectral compensation for vestigial sideband, VSB, signals with carrier frequency error. The VSB signal is sampled and digitized. The carrier frequency of the digitized signal is translated to a selected IF frequency. A fixed frequency VSB fil...
04/03/2007
7200192Method and apparatus for decoding orthogonal codes
An approach for decoding a substantially orthogonal code, such as a CCK code, based on its trellis diagram is provided. Compared to the conventional decoder based on codeword correlation, the unconventional decoder here has the advantage that it can work together wi...
04/03/2007
7194029Multi-pair gigabit ethernet transceiver having adaptive disabling or circuit elements
Various systems and methods providing high speed decoding, enhanced power reduction and clock domain partitioning for a multi-pair gigabit Ethernet transceiver are disclosed. ISI compensation is partitioned into two stages; a first stage compensates ISI components i...
03/20/2007
7180901System and method using a packetized encoded bitstream for parallel compression and decompression
A system and method are disclosed for parallel compression and decompression of a bitstream. For compression, the bitstream is separated into a plurality of components, and the components are encoded using a compression algorithm. Packets are then constructed from t...
02/20/2007
7170947Data receiver
A receiver (1) has an equalizer (2, 4, 5) which introduces inter symbol interferance (ISI) in a controlled manner and low pass filters to reduce noise. The ISI is introduced and the noise is reduced by a filter (4) in an adaptation path. A trell...
01/30/2007
7167212VSB reception system with enhanced signal detection or 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 transmission system. The reception system also includes a modified legacy ...
01/23/2007
7164696Multi-carrier CDMA communication device, multi-carrier CDMA transmitting device, and multi-carrier CDMA receiving device
The transmitter comprises a data/modulation control section (4) which sets predetermined parameters necessary for demodulation processing, sub-carrier group modulation processing sections (6a to 8c) which perform frequency spreadin...
01/16/2007
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