Matches 1 - 50 out of 122 1 2 3 >


Match Document Document Title
8965316 Fine gain tuning  
A circuit tuneable between first and second frequencies comprising gain control circuitry operable to control the gain of the circuit between the first and second frequencies, the gain control...
8712360 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS  
A system includes a first clock module, a global positioning system (GPS) module, a phase-locked loop (PLL) module, a cellular transceiver, and a baseband module. The first clock module generates...
8634501 Carrier selection for multiple antennas  
A method and apparatus is disclosed to process a received single stream communication signal and/or a multiple stream communication. A communications receiver is configured to receive the received...
8532600 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS  
A system includes a first clock module, a global positioning system (GPS) module, a phase-locked loop (PLL) module, a cellular transceiver, and a baseband module. The first clock module generates...
8428531 Radio wave receiver  
A radio wave receiver including an antenna for receiving a radio wave; a tuning unit that can discretely changing a frequency characteristic of the antenna; an oscillation generator that can...
8301098 System and transceiver clocking to minimize required number of reference sources in multi-function cellular applications including GPS  
A system comprises a first clock module configured to generate a first clock reference that is not corrected using automatic frequency correction (AFC). A global position system (GPS) module is...
8179118 Wide-bandwidth spectrum analysis of transient signals using a real-time spectrum analyzer  
A system and method for performing wide-band spectral analysis of transient signals using a real-time spectrum analyzer (RTSA). A frequency window is selected for RTSA acquisition, the frequency...
8159334 System and method of communicating emergency alerts  
A tangible computer readable medium includes instructions executable by a processor to cause the processor to communicate with a multicast alert server to receive a multicast emergency alert...
8150349 Apparatus and method for audio conversion  
An apparatus and method for audio conversion is provided to upgrade the resolution of transmission frequency of an FM (frequency modulation) transmitter and reduce the size of the FM transmitter...
8131237 Radio wave receiving apparatus  
Disclosed is a radio wave receiving apparatus including: an antenna to receive a radio wave; a tuning member to allow a reception frequency of the antenna to be tuned to an intended frequency, in...
8068798 Full closed loop auto antenna tuning for wireless communications  
A wireless terminal includes an RF transceiver, an auto tuner, and an antenna. When a remote signal is received at the wireless terminal, the auto tuner is adjusted in accordance with the received...
7979040 Method for adjusting tuning circuit and receiver circuit  
Disclosed herein is a method for adjusting the tuning frequency of a tuning circuit, which is implemented as a parallel circuit of a coil and series circuits Ai each including a capacitor Ci and a...
7936254 System and method of communicating emergency alerts  
A set-top box device is disclosed. The set-top box device includes a processor and a memory device accessible to the processor. The memory device includes instructions to communicate with a...
7805118 Satellite receiving method and system  
A satellite receiving system (200, 300) and a method for adjusting a satellite receiving system include an input (113); a first oscillator (106) with theoretical frequency (FOSC1) and real...
7660339 Apparatus and method for estimating and correcting frequency offset in MB-OFDM UWB system using time frequency hopping  
Provided are an apparatus and method for estimating and correcting a frequency offset in a multiband-Orthogonal Frequency Division Multiplexing Ultra-Wideband system using a time frequency...
7630686 Radio-frequency-signal receiver and method of manufacturing the same  
A radio-frequency signal receiver and its manufacturing method are disclosed. A tuner receives a radio-frequency signal, and a demodulator receives an output signal from the tuner. An error...
7616935 Method and apparatus for matching receiver carrier frequency  
A carrier recovery method and apparatus using multiple stages of carrier frequency recovery are disclosed. A receiver uses multiple frequency generation sources to generate carrier signals used to...
7515036 System and method of communicating emergency alerts  
The present disclosure is directed to a system and method of communicating emergency alerts. In a particular embodiment, the method includes receiving a multicast emergency alert message at a...
7286794 Method and system for joint broadcast receiving and cellular communication at mobile terminal or device without service control  
Methods and systems for communicating information via a plurality of different networks are disclosed herein. Aspects of the method may comprise receiving broadcast information in a mobile...
7155190 DDS-PLL method for frequency sweep  
A high frequency sweep generator uses a DDS-PLL method for frequency sweep over wide frequency spans. A digital sweep generator produces a linear ramp signal using DDS techniques that is applied...
7099642 Method and apparatus for matching receiver carrier frequency  
A carrier recovery method and apparatus using multiple stages of carrier frequency recovery are disclosed. A receiver uses multiple frequency generation sources to generate carrier signals used to...
7076221 Digital automatic fine tuning method and apparatus  
Disclosed herein is a digital automatic fine tuning method and apparatus, which is capable of detecting a difference between a nominal frequency and an intermediate frequency generated in a tuner...
7076224 Process for controlling the gain of a frequency tuner, and corresponding tuner, in particular for the reception of terrestrial digital television signals  
A method and device are disclosed for receiving digital television signals by a frequency tuner. The power of the signal is measured after an analog/digital conversion in the frequency tuner, and...
6980775 Automatic frequency control (AFC) system and method using an adaptive threshold to improve accuracy of the direct current (DC) component calculation for a received signal  
A radio device requires a tunable transceiver such that the transceiver can be accurately set to a desired frequency. When a signal with known frequency accuracy is being received, an offset...
6925291 Electronic alignment system for a television signal tuner  
An electronic alignment system for a television signal tuner utilizes first and second controllers for generating respective first and second control signals for respective first and second signal...
6879815 Apparatus for extracting a carrier frequency  
A frequency extractor extracts an input frequency of an input signal. The frequency extractor includes a frequency multiplier, first and second filters, a binary circuit and a frequency divider....
6862437 Dual band tuning  
A dual band RF tuning circuit (1) has a first impedance element (4) and a second impedance element (5) between an RF input port (2) and an RF output port (3), tuning being provided by the...
6750734 Methods and apparatus for tuning an LC filter  
A receiver, such as a television receiver, tunes an inductive (“L”) and capacitive (“C”) filter based on a desired frequency. The LC filter includes a plurality of inductors, configured in at...
6700629 Video intermediate frequency processing apparatus  
When adjusting a free-running frequency of a voltage controlled oscillator, the video intermediate frequency processing apparatus receives a VIF-DEFEAT signal to a VIF-AMP to minimize gain of the...
6697128 Video frequency response  
For optimum videotex data coding, for error-free functioning of so-called descramblers and—not least—for the impression of improved detail resolution on the screen of a television set of displayed...
6668160 Method and system for monitoring a radio transmission link  
A radio transmission link between at least one radio transmission device is monitored and at least one radio reception device. Radio transmission links between at least one transmission antenna...
6625431 Tuner device  
A phase-locked loop (PLL) tuning controller monitors a voltage value of an automatic frequency control (AFC) signal, and detects a first frequency at which a first threshold voltage value accords...
6400935 Pilot tone detector  
An apparatus and method for detecting the presence of a signal component in an arbitrary signal, where the signal component has a desired frequency. The apparatus includes an error signal...
6130922 Demodulating digital video broadcast signals  
Apparatus for demodulating digital video broadcast signals with an improved mechanism for automatic frequency control including data modulated on a multiplicity of spaced carrier frequencies. The...
6131023 Cable modem tuner with an up-stream and a reception circuit in the same casing  
A cable modem tuner includes, in the same casing, an up-stream circuit to transmit an up-stream data signal to a CATV station, and a reception circuit for receiving a down-stream signal via a HPF...
6084886 Method and apparatus for facilitating establishment of communications in a messaging system  
A digital sync signal (502) is transmitted (702) from K transmitters (206) of a cluster (402), followed by K fine tuning signals (506) during K time slots (510), each time slot assigned to a...
6064867 Receiving apparatus with automatic frequency controlling  
A receiving apparatus is disclosed which comprises: a receiving circuit for receiving time-division-duplexed first and second radio wave paging signals, having the same carrier frequency,...
6049708 Mobile communication apparatus for intermittently receiving a broadcasting signal at a corrected reception timing  
In an apparatus for intermittently receiving a broadcasting signal at a reception timing which appears by a predetermined intermittent reception cycle and is determined by using a clock generator...
5933200 Method for reducing carrier recovery time in high definition television receiver  
An HDTV receiver with a reduced carrier recovery time in a communication system transmitting a carrier via a pilot signal is disclosed. The HDTV receiver includes a double conversion tuner and a...
5809088 Digital carrier wave restoring device and method for use in a television signal receiver  
A digital carrier wave restoring device for use in a telecommunication receiving system which utilizes a pilot signal: frequency-converts an output signal of a filter to a digital signal...
5524288 Tuning of a radio receiver  
The present invention relates to a method of tuning a radio receiver to a desired frequency. The frequency of each tuning circuit in the radio receiver is controlled by controlling the capacitance...
5524289 Method and circuit for an automatic, high precision frequency fine tuning  
For the purpose of a high precision frequency fine tuning, for example, to a certain television channel, an analog circuit, the frequency of which can be balanced, for example, an demodulator, is...
5521651 Automatic fine tuning detection circuit  
A system for carrying out automatic fine tuning detection comprising a generating section for generating a video intermediate frequency signal from a radio wave, a filtering section connected to...
5450621 Radio receiver with digital control loop for coarse frequency acquisition and analog control loop for frequency lock-in  
Manually tunable analog receivers with AFC have the drawback that the AFC exhibits hysteresis and that in the event of fading pulling to an adjacent station may occur, whereas receivers with PLL...
5444498 Apparatus and method for extending pulling range of automatic fine tuning of television receiver  
An apparatus and a method for extending a pulling range of automatic fine tuning of a television receiver. An initial tuning voltage is applied to a tuner when a channel switching operation is...
5303398 Stability detection method and apparatus for a tuning system  
An indication of stability of a tuning system after changing, the local oscillator frequency to a predetermined frequency, such as a frequency corresponding to a new channel during a channel...
5303403 Electronic switch for selecting satellite polarization signals  
An electronic switch used in a low-noise block down converter for receiving satellite horizontal or vertical polarization signals. The electronic switch only needs one single wire to receive a...
5301366 High performance frequency tuning with low cost synthesizer  
A communication system and a method for using an approximating frequency synthesizer with frequency correction by digital signal processing (DSP) means to provide a radio transmitter or receiver...
5280639 Double super-heterodyne tuner  
A double super-heterodyne tuner provided with an up-converting section and a down-converting section, and including an input filter constituted by single tuning to be supplied with an input...
5280641 Signal-strength-peak detecting circuit for automatic tuning circuit  
In a signal-strength-peak detecting circuit, tuning frequencies by a tuning circuit are periodically varied. Wide band seek is performed according to a signal level of the varied frequencies. When...

Matches 1 - 50 out of 122 1 2 3 >