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WO/2004/013954A1 |
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. The special provision is a connection of a...
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WO/2004/006485A2 |
An apparatus includes a reception circuit (33) with a frequency synthesizer, a decoder (32) for digitally demodulating an audio file signal from the reception circuit, and a processor (34) for initializing the decoder (32) in response to...
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WO/2004/004121A1 |
The invention relates to a receiver of signals [S] received from a wireless network, said receiver working at a so-called reference oscillation frequency controlled by a so-called reference value [Vref]. Said receiver includes demodulati...
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WO/2004/001991A1 |
Disclosed are systems and methods which utilize a relatively low cost first IF filter in a dual conversion tuner circuit. A preferred embodiment first IF filter is provided using a filter arrangement having a relatively high tolerance. A...
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WO/2004/001975A1 |
A tuning system (100) for receiving a radio frequency input signal included in a frequency range, the range having a maximum frequency and a minimum frequency and a plurality of non-overlapping bands, the tuning system (100) comprising a...
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WO/2003/107535A1 |
Tuners (2) comprising electronically tuned filters (22,24) like varicap tuned coil-capacitor tank circuits need to be electronically calibrated, without receivers (1) being near. To store calibration signals, said tuners (2) need memorie...
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WO/2003/105359A1 |
Tuners are adapted to accept a received signal input and provide both a desired tuner output and the received signal as an output. Accordingly, a single tuner circuit, preferably an integrated circuit, may be cascaded to provide a multip...
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WO/2003/105342A1 |
In a method of auto-tuning a radio FM-receiver the receiver frequency band is scanned until a FM signal is received meeting criteria for identifying the signal as being of a predetermined quality, particularly coming from a valid FM stat...
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WO/2003/103170A2 |
In digital communications, a considerable effort has been devoted to neutralise the effect of channels (i.e., the combination of transmit filters, media and receive filters) in transmission systems, so that the available channel bandwidt...
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WO/2003/103143A1 |
A method for tuning a filter to a desired frequency using successive approximation. Elements of the filter are selected according to a control code used to vary the filter's oscillation frequency. The control code is set to the middle of...
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WO2003021945A9 |
A system and apparatus for controlling a television. Various embodiments of the apparatus have various components providing compatibility with most brands and types of televisions.
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WO/2003/098258A1 |
A frequency management scheme for a hybrid communications/positioning device, such as a cellular/GPS or other combined device, generates a local clock signal (102) for the communications portion of the device, using a crystal oscillator ...
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WO/2003/098817A2 |
A frequency management scheme for a hybrid communications/positioning device, such as a cellular/GPS or other combined device, generates a local clock signal (102) for the communications portion of the device, using a crystal oscillator ...
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WO/2003/096535A1 |
A superheterodyne radio frequency receiver (1) receives a radio frequency input signal, representing a modulating signal modulated onto a carrier signal in a manner which will be familiar to persons skilled in the art, from an antenna (2...
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WO/2003/094349A1 |
The invention concerns in particular a method for controlling an analog filter (44, 46) designed to be applied to a radio signal for converting same into a digital signal to be modulated, the demodulation including a step of frequency tr...
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WO/2003/092160A1 |
A system, apparatus and/or method provides frequency response adjustment of an RF input filter of an RF tuner based on impedance of an antenna system that is providing reception of RF signals to the RF tuner. The frequency response adjus...
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WO/2003/092161A1 |
A tuning apparatus (100) compensates for temperature-related frequency variations of a filter (130). According to an exemplary embodiment, the tuning apparatus (100) includes an RF signal source, a tuner (110), and the filter (130). The ...
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WO/2003/092159A1 |
A system, apparatus and/or method provides frequency response adjustment of an RF input filter (208) of an RF tuner (40) based on impedance of an antenna system (24) that is providing reception of RF signals to the RF tuner. The frequenc...
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WO/2003/089952A2 |
In a mobile communication device, a method for compensating for a frequency adjustment in an oscillator shared between a communication circuit and a positioning signal receiver is provided. In one embodiment, the method begins to receive...
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WO/2003/090441A2 |
Channel acquisition in a digital television signal receiver is improved by determining the carrier tracking loop frequency offsets and the symbol timing recovery offsets for each channel in the television receiver. Offsets are stored in ...
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WO/2003/084062A1 |
A receiver (302) for a wireless communication device (106) is disclosed. The receiver comprises a plurality of frequency tines (402) coupled to receive an intermediate frequency signal, each frequency tine of the plurality of frequency t...
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WO/2003/079548A1 |
An Automatic Frequency Control (AFC) circuit for a mobile terminal employs a fractional-N Phase Locked Loop (PLL) to directly reduce errors in the synthesized frequency, such as due to component tolerances, temperature drift, and the lik...
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WO/2003/075459A1 |
An audio recorder-player (1,100) includes M tuners (20,22 or 120a-120n) that generate N audio signals transmitted by N audio sources, an analyzer (30,130) that extracts R x N audio signal characteristics from the N audio signals, a memor...
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WO/2003/075474A1 |
The invention concerns a superheterodyne circuit comprising at least one reception input (5), at least one production output (6) wherefrom can be produced a baseband signal and at least one band-pass filter (8) for channel selection inte...
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WO/2003/073629A1 |
A method and apparatus for compensating an oscillator (108) in a location-enabled wireless device (102) is described. In an example, a mobile device (102) includes a wireless receiver (104) for receiving wireless signals (118) and a GPS ...
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WO/2003/067775A1 |
A multi-band receiver for receiving an input signal having a frequency situated either in a first band or in a second band. The receiver comprising a mixer for combining an amplified signal having substantially the same frequency as the ...
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WO/2003/067774A1 |
Adjustment data of a first and a second tracking adjustment circuit (11, 12) is set in latch circuits (21, 22). A plurality of adjustment data latched in the latch circuits (21, 22) are output at different timings to one D/A converter (4...
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WO/2003/065580A1 |
A television tuner comprises a tunable bandpass filter (4) for selecting a desired input channel with an image canceling capacitor (C8) for rejecting the image frequency of the desired input channel. In order to avoid the necessity of di...
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WO/2003/063353A1 |
A receiver wherein a received signal inputted to an RF amplifier (3) is attenuated by an attenuating circuit (10), and a frequency band is detected in which the field strength of the attenuated signal is greater than a predetermined leve...
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WO/2003/058749A1 |
A device and method for tuning a planar filter through a wide range of center frequencies are disclosed. The tuning assembly includes a superconductive tuning tip and an actuator configured and adapted to move the tuning tip through a su...
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WO/2003/058815A1 |
An integrated demodulator tuning circuit (10, 60) receives differential currents at input terminals (12, 46) and provides an AFC signal at an output terminal (48). The AFC current characteristic has a dead band (72) in the output current...
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WO/2003/056792A1 |
A mobile phone is provided with a broadband AM and&sol or FM radio signal receiver. The mobile phone further has a radio channel memory for storing a plurality of radio channel settings. The mobile telephone has further means for receivi...
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WO/2003/045022A1 |
A system and method for retrieving information. A command key (12) of a platform has an operation and an address of an information source mapped thereto. When the command key (12) is activated, the platform performs the operation and als...
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WO/2003/044951A1 |
The invention relates to a device and a method of installing digital or analogue broadcasting channels (C1, C2, C3, Cj, Cn) of a frequency band, each channel being centred on a nominal frequency (F0, F1, F2, F3, Fj, Fn) subject to drift ...
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WO/2003/044625A2 |
A user interface (12) for displaying graphical operational mode information to a user of a universal remote control (10). The user interface (12) displays to the user in a circular queue arrangement iconic representations of every home a...
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WO/2003/044684A1 |
A system and method for upgrading remote control application resident on a device. A markup language file is created, containing a representation of information used to setup the remote control application to communicate with an applianc...
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WO/2003/044756A1 |
A hand-held electronic device (1150) having a remote control application user interface that functions to displays operational mode information to a user. The graphical user interface may be used, for example, to setup the remote control...
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WO/2003/043194A2 |
A method and apparatus for providing frequency acquisition and locking detection for a phase lock loop is disclosed. The phase lock loop locks a receiver local oscillator to the frequency and phase of an RF carrier to allow data to be re...
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WO/2003/043212A1 |
A receiver such that the period required for tracking adjustment, temperature compensation is not needed, and tracking errors due to fluctuation of the power supply voltage are prevented from increasing, and a tracking adjusting method f...
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WO/2003/043211A1 |
A receiver capable of reducing the number of pads of a semiconductor device used for connection with a tuning circuit. The receiver includes a semiconductor device (100) containing various circuits and a tuning circuit (130) connected as...
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WO/2003/043180A1 |
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 downconvert a received signal. An analog...
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WO/2003/041312A1 |
The present invention provides a number of improvements to Digital Audio Broadcast modules. In particular the invention seeks to provides a lower cost mobile DAB module, which as lower power consumption and is portable. In one aspect of ...
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WO/2003/038999A1 |
A tuneable filter, for example, an antenna filter in a single chip radio receiver, comprises a frequency selective circuit (12) including passive reactive components. At least some of the reactive components (48 to 52) are arranged as a ...
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WO/2003/036322A2 |
Method and apparatuses for receiving and tracking satellite signals in a highly sensitive and accurate receiver. In one aspect of the invention an exemplary method includes generating a set of at least three indicators based on processin...
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WO/2003/034715A2 |
A monolithic integrated circuit includes a tuner (60) and a SAW filter (65) function. The tuner receives a radio frequency (RF) television signal that has a range of fundamental frequencies from 55 mega hertz (Mhz) to 880 Mhz. The tuner ...
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WO/2003/032514A2 |
An RF -to -IF converter includes radio frequency (RF) to intermediate frequency (IF) processing circuitry (102) and a frequency synthesizer (104) for generating a local oscillator signal (57) and clocking signals (53,55). The frequency s...
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WO/2003/032516A1 |
A method in a location enabled mobile wireless receiver having an oscillator, including determining a change in cellular network based frequency error of the oscillator (250), based on a difference (230) between a cellular network based ...
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WO/2003/028384A1 |
Two-way communications between a video system (10) and a control device (16) is disclosed. The communications links comprise visible light, IR light, or a combination of visible and IR light. The communications link provide a convenient ...
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WO/2003/027824A2 |
Disclosed is an operating device (10, 30) which is enables easy operation of an electric device (2) via a variable display surface (15). Fixed allocation of control fields (18, 19, 20) at given positions enable easy operation even withou...
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WO/2003/017494A1 |
The invention relates to a method and device for frequency synchronisation of a mobile station with a base station. The frequency synchronisation is also possible with a grossly-detuned oscillator crystal by selection of an appropriate s...
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