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7558549 |
Method and system for rejecting single-sided leakage into an amplitude modulated (AM) channel
Aspects of the method and system for rejecting single sided leakage into an amplitude modulated channel may comprise an AM demodulator for demodulating a received composite broadcast signal's...
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7558326 |
Method and apparatus for sending auxiliary data on a TMDS-like link
A communication system including a transmitter, a receiver, and a TMDS-like link, in which video data and auxiliary data (typically including timing data associated with other auxiliary data) are...
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7557862 |
Integrated circuit BTSC encoder
An integrated digital BTSC encoder is implemented on a single CMOS integrated circuit chip with an all digital RF modulator. A set top box is provided that allows for a fully integrated solution...
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7539316 |
Configurable filter for processing television audio signals
A television audio signal encoder includes a matrix that sums a left channel audio signal and a right channel audio signal to produce a sum signal. The matrix also subtracts one of the left and...
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7468763 |
Method and apparatus for digital MTS receiver
System and method for an all-digital audio receiver for a BTSC MTS audio signal or other composite signal that is FM modulated. A preferred embodiment comprises a digital FM demodulator for...
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7463310 |
BTSC pilot signal lock
An integrated digital BTSC encoder with an improved pilot signal generator substantially implemented on a single CMOS integrated circuit is described. By digitally generating a sinusoid that is...
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7457420 |
Method and system for detecting signal modes in a broadcast audio transmission
A Japanese BTSC audio broadcast signal has three modes of transmission: mono, stereo, or dual mono. The control channel centering at 3.5 fH is one of the three channels in the J-BTSC signal, and...
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7454776 |
System and method for supplying supplemental audio information for broadcast television programs
An apparatus, method, and program for providing supplemental information related to a broadcast television program. Through a telephone or electronic network interface, a caller can request...
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7411525 |
Sampling rate converting method and circuit
A sampling rate converting circuit receives plural pieces of input data having different sampling frequencies. A plurality of FIR circuits is shared to reduce a circuit area, and, in a case where a...
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7403624 |
BTSC encoder and integrated circuit
A BTSC encoder includes dual channel ADC, sync separator, audio processor, filtering device, and a composite audio signal generating device. The filtering device includes a first filter for...
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7253753 |
Method and apparatus of performing sample rate conversion of a multi-channel audio signal
A method and apparatus are disclosed for performing sampling rate conversion of an audio signal from a first sampling rate to any of a plurality of higher sampling rates using a single set of...
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7103186 |
Stereo/two-tone demodulator
In a stereo/two-tone demodulator for demodulating an intermnediate-frequency signal having stereo or two-tone sound signals modulated on a first and a second sound carrier, the second sound carrier...
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7068322 |
Broadcasting receiver
A remote control transmitter is provided with an AUDIO key for switching an audio mode in sound multiplex broadcasting and an ENTER key for determining various types of selections. When the ENTER...
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7068321 |
Television receiving apparatus
In a television receiving apparatus, a receiving apparatus 1 has storage means for storing a voice output switching table 20 registering a voice setting record 21 having the voice output...
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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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6927802 |
TV receiver with individually programmable SAPchannel
A video signal processor is used to receive programs in the form of a composite video signal which incorporates a video broadcast channel, a main audio channel and an additional audio channel. The...
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6895596 |
Circuit and method for interleaving a data stream
A circuit and method of interleaving a data stream (DATA) in which the data to be interleaved is contained in separate sections of the data stream. A buffer storage circuit ( 28 ) receives and...
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6859238 |
Scaling adjustment to enhance stereo separation
A demodulator ( 10 ) converts television signals to video baseband signals and audio baseband signals including stereo signals representing a right channel signal value and a left channel signal...
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6710815 |
Synchronizing multiple signals received through different transmission mediums
Multiple signals received through different transmission mediums are synchronized within a set top box (STB) for subsequent mixing and presentation. For example, a video program transmitted via a...
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6630963 |
Synchronizing a video program from a television broadcast with a secondary audio program
According to one embodiment, in response to a user pressing an alternative audio button while watching a television broadcast, the user is provided with a list of secondary audio programs (e.g.,...
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6588867 |
Reciprocal index lookup for BTSC compatible coefficients
In a method of calculating a variable spectral compression filter coefficient in a BTSC compatible stereo encoder from a feedback variable, a reciprocal value that is proportional to a reciprocal...
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6492913 |
Method and circuit for decoding an analog audio signal using the BTSC standard
An integrated circuit for decoding an analog audio signal includes a tuner that receives the analog audio signal and provides a sound intercarrier frequency signal. A digital demodulator receives...
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6445422 |
Multichannel television sound stereo and surround sound encoder suitable for use with video signals encoded in plural formats
Method and apparatus for generating a composite audio signal clocked to a selected frequency from left and audio input signals. A video/audio signal generator transmits the left and right audio...
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6259482 |
Digital BTSC compander system
The present invention includes a digital stereo modulator having a digital left channel input and a digital right channel input into a Digital BTSC Stereo Generator that contains a Sine Table. The...
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6124894 |
Audio signal processor
NTSC signals have a frame rate of 29.97 frames per second. In SDI, audio data is sampled at a rate 30n where n is an integer, e.g. 48K samples per second. Thus there are 1601.6 samples per frame....
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6122380 |
Apparatus and method of providing stereo television audio signals
The present invention is a method and apparatus for providing stereo audio signals is disclosed. The circuit for providing stereo audio signals comprises an interface circuit coupled to receive an...
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6064441 |
Receiving method and apparatus in which received broadcasting data read out of a memory contains marks representing a partition of the data
An apparatus for receiving broadcasting signals includes a tuner for receiving a digital audio broadcasting signal, a channel decoder for obtaining information data based on the digital audio...
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5982446 |
Video modulator arrangement
In a single-chip multistandard video modulator arrangement in which audio signals for transmission with video signals are first modulated onto a subcarrier and then combined with the video signals...
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5953066 |
Bilingual television signal processor
In a bilingual television signal processor which is capable of automatically controlling a bandpass filter for detecting a pilot signal included in a bilingual signal received in a television...
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5929922 |
Method for broadcasting digital audio over television vertical blanking intervals
A method and system for broadcasting digital audio signals is disclosed. In one embodiment, the method includes the steps of processing at least a first audio signal from a first audio source,...
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5917557 |
Audio/video system selector
A component system includes a selector connected to at least one audio component, at least one video component includes a teletext receiver wherein audio and video signals output by the audio and...
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5825407 |
Cable television audio messaging systems
A multi-channel audio messaging system for cable television, installed at the headend, enables multiple different input audio messages to be supplied to multiple different channels of a cable...
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5737034 |
Radio frequency modulator having an audio multiplex broadcasting function
A radio frequency (RF) modulation apparatus for modulating input video and audio signals into a television broadcast signal is provided. The apparatus includes a buffer amplifier, a decoder, a...
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5585858 |
Simulcast of interactive signals with a conventional video signal
A system for simulcasting a fully interactive program with a normal conventional program in the same standard video signal bandwidth. It allows active participation by subscribers who have...
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5497206 |
Circuit for controlling an audio signal output of a television
A circuit for controlling the audio signal output of a television, in which it is determined whether video and audio signals are input from an external source, such as a video tape recorder. If so,...
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5463424 |
Multi-channel transmitter/receiver system providing matrix-decoding compatible signals
The invention relates generally to transmitting and receiving multiple channels of information, particularly audio information which represents a multidimensional sound field. More particularly,...
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5339110 |
Sound multiplex broadcast receiver and method of controlling display thereof
In a sound multiplex broadcast system employing sound multiple signals having a plurality of sound multiplex modes and a display control method therefor, there are detected kinds of sound multiplex...
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5337196 |
Stereo/multivoice recording and reproducing video tape recorder including a decoder developing a switch control signal
A stereo/multivoice recording and reproducing apparatus used for a high fidelity video tape recorder comprises a multi-channel television system (MTS) decoder for demodulating stereo and multivoice...
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5333056 |
Television signal converter providing separate stereo sound outputs
A television signal processor box that processes a standard incoming television signal to provide frequency channel selection, remote control capability, stereo sound separation and amplification...
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5305382 |
Satellite broadcast receiver
A satellite broadcast receiver comprise a demodulator for demodulating received signals, a mode changer for changing the voice output mode, and a control that prevents a voice output mode changing...
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5305105 |
Audio/video signal input terminal circuit with automatic switching function
An audio/video signals input terminal circuit comprising an input terminal section having a plurality of input terminals, a select control signal generating circuit for detecting the presence of a...
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5293633 |
Apparatus and method for providing digital audio in the cable television band
A method and apparatus are provided for transmitting, receiving, and reproducing digital audio signals as discrete carriers similar to standard FM broadcast signals. An audio signal is digitized...
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5291556 |
Audio system for a computer display
An audio system for a computer visual display unit (VDU), providing four loudspeakers 1 to 4 at the corners of the VDU screen. Sound is distributed to the loudspeakers under computer program...
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5222143 |
Compatible multivoice broadcasting receiver
A compatible multivoice broadcasting receiver is disclosed which can receive both Korean multivoice broadcasting and American multivoice broadcasting and commonly process the one-carrier component...
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5191615 |
Interrelational audio kinetic entertainment system
Movable and audible toys and other animated devices spaced apart from a television screen are provided with program synchronized audio and control data to interact with the program viewer in...
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5187576 |
Stereo radio frequency modulating system
Disclosed is a stereo RF modulating system which converts stereo information along with image information to RF signals in an image recording/reproducing system. Conventional RF modulators can...
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5124793 |
Sound multiplex signal encoder circuit with controlled AFC operations
A sound multiplex signal encoder circuit comprises a frequency modulator for modulating a sub-carrier wave, having a frequency twice as high as the frequency of a horizontal synchronizing signal of...
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5063446 |
Apparatus for transmitting auxiliary signal in a TV channel
Apparatus for converting a signal having a substantially continuous frequency spectrum to a signal having its energy concentrated at multiples of the line frequency of a video signal, includes...
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5029003 |
Apparatus for incorporating digital signals with a standard TV signal
A system for transmitting digital sound signals in a standard broadcast video signal includes apparatus for removing video signals from a portion of the vestigial sideband of the broadcast video...
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4991015 |
Method and circuit arrangement for identifying the presence or absence of at least one frequency of a known value in an input signal compound of a plurality of frequencies
A method and circuit arrangement identifies the presence or absence of known frequencies in an input signal composed of a plurality of frequencies, whereby a frequency generator controlled by a...
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