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WO/2002/060058A1 |
A wireless receiver is described having an intermediate frequency (IF) filter that helps the wireless receiver receive a GPS wireless signal or a cellular wireless signal. The wireless receiver also has an IF filter tuning and control ci...
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WO/2002/058256A1 |
A receiver (600) uses a scanning technique (100) to minimize scan time. An initial bandwidth setting is selected that covers multiple channel frequencies (106). A signal detection step (108) is performed looking for channel activity. As ...
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WO2001009691A9 |
The narrow band scanning RF receiver (12) includes a ph ase-locked loop radio frequency stage having a reference oscillator (38) for receiving a radio frequency signal. The radio frequency stage has a frequency which may be selected by a...
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WO/2002/052673A1 |
The present invention relates to a method and a system for tuning a radio filter. The radio filter comprises at least one resonator module, each of said at least one resonator module having a tuning mechanism, a filter input connection, ...
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WO/2002/051022A1 |
The application discloses a radio transmission device for receiving/transmitting of radio packets, comprising: a reception means (34) connected to a mixing means (4) via a transmit/receive switch (32) and an amplifying means (30), said m...
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WO/2002/051015A2 |
It is now becoming increasingly desirable for set top boxes to be fitted with two or more tuners, each having an associated receiver/decoder. This is to allow, for example, a user to watch a satellite television program whilst recording,...
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WO/2002/049888A1 |
Receiving apparatus (1) for receiving an amplitude modulated signal which may be transmitted on a plurality of frequency channels within a predetermined frequency bandwidth comprises a tuner (3) for sequentially scanning through the chan...
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WO/2002/049213A1 |
The present invention relates to a method for tuning a radio filter. The filter comprises an input connection, an output connection and at least two resonator modules coupled in cascade, each having a tuning mechanism and a probe. A firs...
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WO/2002/047195A1 |
A method and an apparatus for transmitting plural signals over a single antenna (108) in a radio station comprising a combiner (102) with tuneable bandpass combiner filters, wherein each combiner filter (106) is used for filtering a tran...
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WO/2002/043042A1 |
By using light-emitting diodes (11) capable of emitting light sufficiently even with a low voltage of a cell as a display unit for displaying various settings of a device, a display driver (9) packaged in an IC chip (10) is not required ...
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WO/2002/039634A1 |
A quadrature demodulator unit (102) quadrature demodulates a received signal. A/D converter units (103a,103b) convert the quadrature demodulated signals to digital signals, which are despread by despreader units (104a,104b). A frequency ...
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WO/2002/035711A2 |
The invention relates to a filter for electromagnetically transmitted signals, especially for signals of mobile telephones and similar user terminals. The filter inhibits and disturbing influences on data containing signals. The filter i...
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WO/2002/031978A2 |
An Internet service makes available control codes for use on a programmable universal remote. The remote controls CE equipment through IR or RF commands. A server supplies the control codes as XML data that gets processed at the receiver...
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WO/2002/025813A1 |
The invention relates to a resonator configuration and to a resonator tuning method. Said resonator configuration comprises at least one tunable reference resonator, means for tuning the reference resonator to a reference value by using ...
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WO/2002/025881A1 |
The invention relates to a method for frequency acquisition, especially for initial frequency acquisition, by means of a known synchronization sequence for synchronizing a mobile communications device with a local oscillator to the previ...
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WO/2002/025812A1 |
The invention relates to a method for calibrating the frequency of an HF-oscillator (2) in a mobile part (1) of a mobile communications device when the mobile communications device is switched on for the first time. The method comprises ...
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WO/2002/025935A2 |
A parameter is set to an accurate value, by voice control or manual input, by giving the commands Up, Down and Stop. The command 'Up' increases the value of the parameter at a first speed; a subsequent command 'Up' increases the value at...
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WO/2002/025811A1 |
The invention relates to a component having an acoustically active material, whose acoustic constants can be at least partially altered. The acoustically active material is located at least partially at a phase transition point and/or in...
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WO/2002/015272A1 |
A semiconductor chip, used to mount a plurality of tuner-related function units, comprises a first semiconductor chip (1) and a second semiconductor chip (2), and a circuit that can be changed according to applications is mounted on the ...
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WO/2002/013383A1 |
The invention relates to a high frequency input stage comprising a high frequency coupling element (KE), which couples an air interface (ANT) to the inputs of high frequency resonant circuits (HR1, HR2) that are connected in parallel. In...
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WO/2002/013382A2 |
A method and apparatus for providing dynamic and remote tuning of a cryo-cooled bandpass filter is disclosed. The device includes resonator element and a voltage sensitive element as part of the capacitance in a narrow band filter circui...
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WO/2002/011381A1 |
A frequency offset correction value estimating unit (21) receives a signal containing a predetermined fixed pattern from the transmission side, selects a combination of fixed patterns used for estimation of the frequency offset depending...
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WO/2002/009280A1 |
Receiver comprising an RF input filter including a digitally controlled capacitor bank with n capacitors being controlled by a tuning control signal for varying the tuning frequency of the RF input filter within a tuning range. For an im...
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WO/2002/008848A2 |
An image displaying system comprises a display device and a remote control unit. The remote control unit is provided with a light emitting pointer device and a detector for detecting light emanating from the display device. The pointer d...
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WO/2002/009095A1 |
Reliable and efficient activation and deactivation control of a number of electronic products (P1, P2, P3) is effected by activation of one of said products by emission of an activation command specific to said product and controlling pe...
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WO/2002/007222A2 |
A receiver for radio or television signals provided with a high-frequency circuit comprising a discrete semiconductor component which includes a planar variable capacitance diode formed on a semiconductor substrate of a first doping type...
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WO/2002/006686A1 |
The present invention relates to a tuning screw assembly comprising a sleeve (100) with internal threads for engaging a tuning screw (200) having external threads. The sleeve comprises a first threaded portion (32) which is axially displ...
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WO/2002/001718A1 |
The invention concerns a self-adaptive band-pass filtering device in a microwave signal transceiver, the receiver being connected to a microwave signal reception antenna (1) connected on the input of a low-noise amplifier (2), a mixer (4...
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WO/2001/097512A2 |
A television receiver comprising a tuner (104), a microprocessor (108), a communications bus (114) and a rewritable memory (202), e.g., an electrically erasable programmable read only memory (EEPROM). The memory is programmed to contain ...
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WO/2001/093624A1 |
A device for operating an electronic apparatus is standardized so that it can be applied to any of various apparatuses. More specifically, an 'information image' such that image information and related information is handled as a unit is...
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WO/2001/093570A1 |
A channel selection apparatus that has an improved operability realized by eliminating the necessity of CATV mode selection by the user and that provides nonerroneous detection of the existence of signals even when the frequencies of CAT...
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WO/2001/088967A1 |
LC tank formed on a lossy substrate material having adjacent strips leading current in opposite directions and being arranged in such a way that substrate currents relating to individual strips (1) induced in the lossy substrate (3) are ...
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WO/2001/089081A2 |
A radio frequency feedback amplifier circuit of high linearity within the range of frequencies with which the circuit is to be used comprises a high gain amplifier incorporating a bandpass filter in the form of a single resonator which m...
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WO/2001/086316A2 |
The frequency error of an oscillator is minimized by characterizing the oscillator. A reference signal from an external source containing a minimal frequency error is provided to an electronic device. The external signal is used as a ref...
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WO/2001/086809A2 |
The frequency error of an oscillator is minimized by characterizing the operating environment of the oscillator. An electronic device monitors parameters that are determined to have an effect on the frequency accuracy of the internal fre...
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WO/2001/086810A1 |
A receiver for analysing input RF signals comprises a first stage (51-55a) which includes an input for receiving one or more RF signals for analysis and a first local oscillator (51) having an output comprising a first plurality of frequ...
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WO/2001/084709A1 |
A band switching double-tuned circuit for receiving analogue or digital television broadcasts is discribed. It is adapted to receive VHF low band and high band signals and comprises inductive coupling means for each band switching diode ...
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WO/2001/082517A1 |
A frequency shift transceiver, specifically communication means among the members of an exclusive group of, for example, ten persons or so, which is impervious to communication intercept and has no fear of crosstalk, characterized in tha...
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WO/2001/078231A1 |
The invention relates to a structural element with an integrated high-frequency circuit. A ladder network (12) is connected in parallel to a resonator circuit (1), said ladder network comprising trimming capacitors (18). Said trimming ca...
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WO/2001/077705A2 |
Systems and methods are described for a GPS receiver capable of functioning in the presence of interference. A method includes detecting an interfering signal including: tuning a band pass filter over a frequency range; and at each of a ...
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WO/2001/076069A1 |
A programming method (250) for digitally programming the adjustment of an electronic trim capacitor (212, 314, 414). In an initial step (252), programming is initiated by setting an enable terminal (224). In subsequent steps (254, 256) a...
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WO/2001/076066A1 |
A structure (110, 150) for enhancing the quality factor (Q) of a capacitive circuit (112, 152). The capacitive circuit (112, 152) includes a first resistance (122, 164), a capacitance (124, 166), and a second resistance (126, 168). The c...
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WO/2001/075473A2 |
A locator using Navstar constellation signals for determining geographical location of a mobile receiver. The locator is integrated with a mobile unit of a cellular network, which derives its reference frequency from a local oscillator (...
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WO/2001/076097A1 |
A demodulator comprises a DSP. The DSP determines the amount of distortion of a transmission line based on a known signal included in a received radio signal, and estimates the frequency of the direct wave based on the amount of the dist...
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WO/2001/076067A1 |
Receivers for receiving AM signals normally use many elements which are not integrable. This results in high costs and bulky circuits. Proposed is to use switched capacitors in the RF stage of such a receiver, which results in reducing t...
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WO/2001/073685A1 |
The invention relates to an RFID label comprising a resonant circuit consisting of a coil and a capacitor. Said RFID label is provided with an additional element (13, 17, 20, 21) for regulating the resonance frequency of the resonant cir...
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WO/2001/071912A1 |
The invention relates to a method for locating and setting a channel in a telecommunications terminal comprising a radio and/or a television receiver. According to said method, available channels are located and set in the radio and/or t...
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WO/2001/069687A1 |
The invention relates to a component comprising at least one first diode (D1) and a second diode (D2) which are variable capacitance diodes. The characteristic curve of the second diode is provided with a fixed, known ratio in relation t...
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WO/2001/069773A1 |
A voltage controlled crystal oscillator (VCXO) (25), for example, as used in a mobile communications terminal (23), has its output frequency F¿ref? stabilised against temperature drift using frequency correction information received, fo...
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WO/2001/069568A1 |
A channel number organizer for a remote control (Fig. 3) enables the user of a television remote control (10) using the channel up and down functions to define a scrolling loop of selected channels as a result of the available channels. ...
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