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7610012 |
Radio vision electronic network/analog output/viewing system
A system for AM broadcasting, and listing to audio, as well as, viewing slow scan pictures, by using an ordinary AM receiver and a slow scan video converter. The slow scan can be an AM picture,...
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7605873 |
LCD TV capable of being used as a music station only
An LCD TV capable of being used as a music station only, which can turn off the internal video decoder and the internal backlight power when the LCD TV only desires to output an audio. The LCD TV...
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7567302 |
Receiving device for digital broadcasting
A receiving device for digital broadcasting is provided. The receiving device is provided with a receiving system that receives a digital broadcast wave and obtains digital data based on the...
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7477325 |
Audio/video separator
An audio/video separator provides a high-performance and cost-effective solution to analog TV reception with only one A/D converter and a minimum of analog IF components. The apparatus may operate...
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7477324 |
Transmission system
The invention relates to a transmission system ( 10 ) comprising a transmitter ( 12 ) and a receiver ( 14 ). The transmitter ( 12 ) is arranged for transmitting a plurality of signals ( 13 ), e.g....
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7472058 |
Automatic audio source detection for capture devices
A method for selecting an audio source when capturing audio data with at least one capture device includes connecting an audio source to an audio input port of the capture device, turning off the...
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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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7466366 |
TV tuner providing FM radio reception
A TV receiver capable of producing audio output from an FM radio signal substitutes an oscillator ( 217 ) and mixer ( 218 ) with an output at the sound intercarrier frequency for the normal TV...
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7421040 |
Modem tuner
A tuner includes a mixer which receive first and second inputs via a multiplexer in different frequency ranges from different sources such as cable and satellite. A local oscillator supplies...
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7420627 |
Digital television broadcast signal receiver
In a multi-directional antenna that is connected to a digital TV broadcast signal receiver, an RF amplifier in which its transmission gains are controlled is installed on the front of a tuner, a...
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7414675 |
Television tuner being capable of receiving FM broadcast signal
A television tuner contains a mixer 1 to which a television signal or an FM broadcast signal is input and outputs an intermediate frequency signal based on the television signal or an...
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7412009 |
Apparatus and method for automatic performance control in a digital radio
In digital radio technology, information channels describing the properties of the associated performance channel(s) are included in the broadcast band. The digital radio determines when selected...
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7408593 |
Digital television broadcast signal receiver
In a digital TV broadcast signal receiver connected to a multi-directional antenna called smart antenna, even when a user reshuffles a channel frequently, it is aimed to shorten a time delay...
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7394504 |
Television with the frequency modulation receiver
The present invention concerns a television with the frequency modulation receiver. The sound demodulation method of the television as well as that of a FM radio is a way of frequency modulation....
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7388622 |
Television tuner which can obtain sufficient receiving sensitivity even when receiving FM broadcasting signal
First varactor diodes for changing tuning frequency are provided at tuning circuits, a second varactor diode for changing an oscillating frequency is provided at an oscillator, tuning voltages...
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7333155 |
Quadratic 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...
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7327406 |
Methods and apparatus for implementing a receiver on a monolithic integrated circuit
A monolithic integrated circuit includes a tuner and a SAW filter function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega...
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7301584 |
Dual mode tuning arrangement
In a local oscillator for a tuning arrangement for both TV and FM signals there is substantial risk of parasitic oscillation. A special provision is disclosed for effectively reducing this risk....
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7289780 |
Band switchable type tuning circuit of television signal
A band switchable type tuning circuit has first switch means interposed between a power supply Vcc and an anode of a switch diode, a first resistor whose one end is connected to a cathode of the...
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7286808 |
Broadcast receiving system and broadcast receiving method
In a broadcast receiving system, a first antenna receives a broadcast signal of a first frequency band and a second antenna receives a signal of a second frequency band different from the first...
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7231192 |
High frequency receiver
A high frequency receiver of the present invention has a mixer of which one input part is connected to an output part of a filter and the other input part is connected to an output part of a...
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7227591 |
Apparatus and method for receiving television and radio broadcasting signals using a single tuner
There is provided a combined TV and FM radio receiver for selectively receiving TV and FM radio signals via a single tuner using a digital intermediate frequency (IF) stage. The receiver includes a...
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7221412 |
Digital broadcasting receiver and channel information registration processing method in digital broadcasting receiver
Disclosed in a digital broadcasting receiver comprising first means for performing pre-scan processing for successively tuning in on channels previously set, to examine whether or not a received...
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7218671 |
Equalizer for a VSB receiver enabling equalizations using segment synchronization information
An equalizer for a VSB receiver, which enables equalizations using segment synchronization information, has an extraction unit extracting the segment synchronization information included in the VSB...
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7190414 |
Input circuit of television tuner in which interference caused by FM broadcasting signal is attenuated
An object of the present invention is to switch a television signal or an FM broadcasting signal by a small number of active elements, to input the switched television signal or FM broadcasting...
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7151577 |
Broadcast receiving system and method, and medium storing a broadcast reception control program
For receiving a voice FM broadcast it has so far been necessary to separately provide an SAW filter and a voice intermediate frequency amplifier circuit and the freedom of circuit design has been...
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7147475 |
Personal computer lesson system using videophones
In this system, an instructor's device for teaching how to operate a personal computer is bidirectionally connected to a student's device for learning how to operate a personal computer, via a...
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7113523 |
Data multiplexing device, program distribution system, program transmission system, pay broadcast system, program transmission method, conditional access system, and data reception device
In a data multiplexing device which multiplexes and transmits the transport stream packets of program data consisting of a plurality of data elements constructed in the form of transport stream...
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7106382 |
Information processing system and information processing apparatus
An information processing system and apparatus receiving a television broadcast includes: a direct receiving unit directly receiving television broadcast waves; an indirect receiving unit...
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7075899 |
System and method for providing private in-band data to digital set-top boxes in a broadcast environment
The present invention involves a system, apparatus, and method for providing private in-band data to digital set-top boxes in a broadcast environment. In one example, a digital set-top box...
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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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7043211 |
Universal modulator
A modulator generates a combined signal consisting of audio and video signals and converts the combined signal to one of a plurality of frequencies in dependence upon a desired output frequency and...
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7030937 |
Simplified TV tuner intermediate frequency circuit
Between a mixer and an intermediate frequency amplifying circuit, there are an intermediate frequency tuning circuit which, for reception of a TV signal, is tuned between a chrominance subcarrier...
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7002638 |
Automatic gain control
In a method of automatic gain control for both TV and FM radio signals, the TV and FM radio signals are controllably amplified (AGC-AMP) to obtain amplifier output signals, the amplifier output...
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6975689 |
Digital modulation signal receiver with adaptive channel equalization employing discrete fourier transforms
Techniques for calculating the system characteristic of the adaptive filtering used for equalization and echo-suppression in a digital communications receiver, such as one used for receiving...
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6973050 |
Transmission announcement system and method for announcing upcoming data transmissions over a broadcast network
In a broadcast system in which computer data and other content are delivered from multiple content servers to multiple clients at least partly over a broadcast network, a transmission announcement...
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6968154 |
Avoidance of interference between items of electrical apparatus
The invention relates to the simultaneous operation of items of electrical apparatus, such as but not exclusively, a broadcast data receiver and a DECT telephone system. A problem with this type of...
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6963623 |
Multi-system correspondence receiver
A carrier wave NTSC component or a VSB pilot signal in an IF signal is extracted and judged. Then, on the basis of the judgment result, either of demodulation circuit 13 and 14, which is...
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6950152 |
Television tuner which has leveled a gain deviation in the same band
A gain deviation is leveled in the same band by using a varactor diode having the same characteristics as that used in an input tuning circuit for coupling the input tuning circuit and a high...
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6944431 |
High-frequency signal transmission apparatus and electronic tuner using the same
An electronic tuner has an input terminal, a mixer receiving the signal fed into the input terminal, a matching circuit connected to an output of the mixer, a band-pass filter connected to an...
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6938271 |
Television receiving apparatus
A microcomputer 50 discriminates a CATV channel plan mode only if there is a continuous channel among the channels that have been judged that station is present as a result of determination in...
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6927805 |
Compactly-designed television receiver
A television receiver intended to decrease the number of expensive SAW filters to achieve low cost and a compact design. A trap circuit is interposed between a mixer and a SAW filter. During...
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6914639 |
Combination tuner capable of receiving television signal and FM signal
A combination tuner includes a switching circuit having three transistors which are selectively turned on and off so that one of a television signal received by a first signal receiving unit using...
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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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6876401 |
FM-broadcast-receivable television tuner for preventing adjacent-channel interference
A trap circuit system includes a first trap portion and a second trap portion. In the first trap portion, a first capacitor is provided in parallel to a first switch diode. A control voltage is...
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6864924 |
Television tuner input circuit having satisfactory selection properties at high band reception
The present invention provides a television tuner input circuit having satisfactory selection properties free from influence by half of signal frequencies to be received. The television tuner input...
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6850747 |
Image trap filter
An image trap filter disposed between the low noise amplifier and the mixer of a radio frequency receiver that overcomes the adverse effect of process variations on image signal rejection for both...
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6842198 |
TV signal receiving tuner capable of outputting oscillation signal having wide frequency band by means of single local oscillator
A TV signal receiving tuner which is small in size and inexpensive due to a reduced number of local oscillators. In the TV signal receiving tuner, a local oscillation signal output from a local...
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6791626 |
Input switching circuit for a television tuner immune to interference due to FM broadcasting signal
An input switching circuit for a television tuner includes first and second switching circuits provided between first and second input terminals to which a television signal and an FM broadcasting...
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6765628 |
Method and apparatus for searching channels
A method for searching a predetermined satellite channel by making use of information available from the satellite. The method comprises three steps. The first step is searching for a service...
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