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7577337 |
Audio/video data recording/reproducing device and method, and audio/video data reproducing device and method
An audio/video data recording/reproducing device is provided that allows all video and audio signals, which can be displayed by a display of the audio/video data recording/reproducing device...
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7564905 |
System and method for providing terrestrial digital broadcasting service using single frequency network
Provided is a system and method for terrestrial digital broadcasting service using a single frequency network without additional equipment. The system and method synchronizes input signals into...
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7555066 |
E8-VSB reception system
An E8-VSB reception system system is provided. A VSB receiver converts a received broadcast signal into a digital baseband signal in synchronization with a first symbol clock, converts a decision...
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7345715 |
Apparatus and method for transmitting and receiving multiple signals inclusively
An apparatus and method for transmitting and receiving multiple signals inclusively in one channel are provided. The apparatus for transmitting multiple signals inclusively includes 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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7313208 |
Pre-equalization for low-cost DTV translators
A low cost DTV translator, which translates an incoming signal on channel A to an outgoing signal on channel B, includes a transmitter pre-equalizer whose taps are configured with tap values that...
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7307665 |
Method and system for generating reference signals with improved correlation characteristics for accurate time of arrival or position determination
The present invention provides a method and system for generating reference signals that, when correlated with synchronization code signals or other components of broadcast TV signals, yield...
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7292286 |
Multichannel quadrature modulation
A method and apparatus for modulating both quadrature components of each of a plurality of RF signals comprising a multichannel signal is disclosed. By employing certain digital signal processing...
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7263713 |
Television signal distributor apparatus, receiver apparatus, television signal transmission system and method
In a television signal transmission system, CS broadcasting signals received via a master antenna are converted into intermediate frequency signals in an LNB (Low Noise Block Down Converter). The...
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7263277 |
Control signal transmitting and receiving techniques for video/audio processing IC and apparatus therefor
Control signal transmitting and receiving methods for video/audio processing integrated circuit (IC), the method applied to a video player, and an apparatus therefor are provided. The control...
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7256840 |
Digital television signal translator
A tuner of a digital television signal translator tunes to receive an RF digital television signal on a first selected television channel. A demodulator provides a baseband digital television...
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7236758 |
Integrated wireless multimedia integrated circuit
An integrated circuit having a transmit chain configured to provide direct FM modulation of a voltage controlled oscillator of a frequency synthesizer by a composite signal that includes audio and...
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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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7151576 |
Method and apparatus for modulating video signals
A luminance component of a video signal is modulated in a first frequency band. A first chrominance component of the video signal is modulated in a second frequency band and is mixed with an audio...
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7136112 |
Method and apparatus for modulating video signals
A luminance component of a video signal is modulated in a first frequency band. A first chrominance component of the video signal is modulated in a second frequency band and is mixed with an audio...
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7079194 |
Radio frequency modulator having C/L delay compensation function, and set-top-box using the same
An RF modulator includes a C/L delay compensation function of compensating for a delay of a luminance signal with respect to a chrominance signal occurring during demodulating a video signal in a...
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7006160 |
Television signal transmitter attenuating unwanted signal while maintaining match between circuits
A signal transmitter prevented from outputting an unwanted signal to the outside, which is generated at the time of changing any of various setting parameters such as a channel through which a...
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6987541 |
Video signal processing circuit that can correspond to a plurality of television signal methods
A video signal processing circuit. includes: a bell table, a first switch, a carrier generating unit, a second switch and a calculation processing unit. The bell table inputs a color difference...
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6970052 |
Modulator immune from temperature variation-induced change in modulation factor
A modulation factor is kept immune from the influence of temperature variation. A modulator is provided with an operational amplifier to one of whose input ends are inputted video signals and to...
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6956622 |
Method and apparatus for modulating video signals
A luminance component of a video signal is modulated in a first frequency band. A chrominance component of the video signal is modulated in a second frequency band. The modulated luminance...
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6952237 |
Apparatus and method for transmitting audio over a dedicated video line
Disclosed is a method and apparatus for transmission of audio signals over a dedicated video transmission line in which the analog audio signal is inserted into and becomes a part of the video...
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6940561 |
Automatic modulation and RF carrier level control of sync suppressed television signals
The depth of modulation and the absolute RF carrier level of an amplitude-modulated video signal are automatically adjusted. For adjustment of the depth of modulation, a sync tip of the video...
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6917655 |
Coding and decoding a signal modified in accordance with the feedback states of an encoder
A data encoding system includes a modifier, an encoder, and a feedback. The modifier receives a first data stream and modifies the first data stream so as to provide a second data stream. The...
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6895252 |
Economical extension of the operating distance of an RF remote link accommodating information signals having differing carrier frequencies
A system for economically extending the effective operational range of an infrared remote control system having a remote control unit with an infrared transmitter, and a controlled device having an...
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6833877 |
RF converter having multiple AV/S terminals
The present invention has multiple AV/S terminals, an RF modulator, a S/AV signal converter and multiple switches. The switches connect the AV/S terminals with the RF outputs to allow the AV/S...
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6738102 |
Local digital television signal generator
A local digital TV signal generator is disclosed, which generates an ATSC RF signal that can be received by a digital TV. Synchronization between a memory device and a VSB remodulator is performed...
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6724832 |
Vestigial sideband generator particularly for digital television
A digital television transmitter for an ATSC or NTSC signal includes a digital vestigial sideband modulator having a digital sinusoidal source. A digital multiplier arrangement multiplies a digital...
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6724439 |
Low cost VSB encoder and RF modulator for supplying a substantially 6 MHZ VSB signal to digital television receiver
A system supplies a compressed digital signal to a digital television receiver and includes a source of compressed baseband signal. An encoder encodes the baseband signal in a digital format, and...
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6714260 |
Monolithic generation of RF for wireless transmission of video
A digital imaging system generates a composite video signal and the carrier frequency of a desired television channel is generated internal to the imager integrated circuit. The carrier frequency...
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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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6650374 |
Digital television relay system
The present invention relates to a digital television relay system for relaying wirelessly a broadcasting signal discharged from a broadcasting station. In order to cover shadow areas of the...
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6633340 |
Video signal processor
A video signal processor reduces the deterioration of image quality due to the superposition of noise on a sync signal included in a luminance signal. A frequency discriminator outputs a first...
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6600516 |
Digital RF transmitter system employing both digital pre-correction and analog pre-correction
A digital radio frequency transmitter system having an input circuit for receiving digital signals to be amplified and transmitted. A digital-to-analog converter converts the digital signals into...
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6567132 |
Upconverter for a television signal headend distribution center handling analog and digital signals and method of making and using the same
An upconverter for converting IF television signals to VHF or UHF signals prior to broadcast is configured to process either analog or digital television signals. The upconverter identifies the...
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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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6515712 |
Signal distortion compensating apparatus and method in digital TV translator
A signal distortion compensating apparatus and method in a digital TV translator are provided that extract a reference signal from a modulator output of a digital TV translator, and conduct a...
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6515609 |
Radio receiver
A radio receiver comprises frequency translation means( 20, 21, 22 ) for frequency down converting an input signal to an intermediate signal, digital channel selection filtering means including at...
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6473136 |
Television broadcast transmitter/receiver and method of transmitting/receiving a television broadcast
Motion information for an object and background information are broadcast-transmitted on a transmitting side. On a receiving side, the motion information and the background information are...
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6466277 |
VSB digital modulator
A digital method and apparatus modulates a stream of digitized samples from a source, by a digital representation of a carrier to provide, for example, a 6 MHz bandwidth television signal...
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6437822 |
Method and apparatus for generating an HDTV signal for use in demonstrating an HDTV receiver
A method and apparatus are disclosed for generating an 8-level vestigial side band modulated radio frequency signal as a high definition television test signal. The invention utilizes the above in...
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6433830 |
Off-air phase lock technique
The proposed phase lock technique uses various feedback loops to lock the frequency and phase of a CATV modulator output signal to that of an off-air signal without directly measuring the output...
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6411342 |
Video signal transmission equipment
A signal of a vestigial sideband modulated wave is generated by use of a first oscillator, an amplitude-modulator and a surface acoustic wave filter for vestigial sideband filtering at a frequency...
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6388717 |
Digital television transmitting system having data and clock recovering circuit
A digital television transmitting system is presented having a recovery circuit for recovering non-return to zero (NRZ) data pulses and transport clock pulses from a biphase-mark serial data pulse...
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6317167 |
Sine x/x compensation circuitry merged with a digital modulator
Digital remodulation systems typically include digital to analog converters which have an inherent undesirable sin(x)/x frequency response. Digital remodulated signals are typically high frequency...
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6313772 |
Complex carrier signal generator for determining cyclic wave shape
A method for generating digital carrier signals for application as the carrier to a digital modulator includes providing a first repeating sequence of complex values occurring at a given sample...
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6265949 |
Phase compensation apparatus and method for a digital modulator
A phase compensation apparatus and method for a digital modulator which is suitable for maintaining the optimum operating state of the modulator provided in a digital television repeater by...
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6219108 |
Radio receiver detecting digital and analog television radio-frequency signals with single first detector
Radio receivers for receiving DTV signals, in accordance with the Advanced Television Systems Committee (ATSC) standard, or analog TV, in accordance with the National Television Sub-Committee...
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6195797 |
Apparatus and method for providing computer display data from a computer system to a remote display device
A method and apparatus are provided for enabling multiple users to concurrently access a PC-based server in a home local area network using conventional TVs as display devices. A client system...
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6177963 |
Video signal distribution system
A video signal distribution system comprises an interface device and video signal input means for receiving TV signals on broadcast channels connected to the interface device. A plurality of video...
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6169584 |
Automatic modulation control of sync suppressed television signals
The depth of modulation and the absolute RF carrier level of an amplitude-modulated video signal are automatically adjusted. For adjustment of the depth of modulation, a sync tip of the video...
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