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WO/1999/023759A1 |
An apparatus is provided for locking a local oscillator to a reference oscillator. The reference oscillator is arranged to transmit a signal containing two reference pilot tones in a signal sideband. The apparatus samples the received si...
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WO/1999/022447A1 |
Electronic appliances can seem complicated to operate due to the large number of operating buttons. The aim of the invention is make the operation of an electronic appliance clearer whilst maintaining a high level of user comfort. To thi...
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WO/1999/021276A1 |
A mobile radio for use in multiple different frequency plans is disclosed. The multiple different frequency plans, such as land-based plans (cellular, land mobile radio, etc.) and satellite-based plans may employ different frequency band...
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WO/1999/017460A1 |
A receiving antenna device for a receiver to be mounted on a radio-controlled model. This receiving antenna device enables an accurate tuning to be obtained, even the position of the installation of the receiver, the routing of an antenn...
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WO/1999/016282A1 |
A remote control device comprising a display unit for displaying a function item selection screen on which remote operation target equipments as a plurality of function items such as 'luminaire', 'air conditioner' and 'television' are ar...
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WO/1999/016171A1 |
The invention concerns a remote control comprising a microprocessor with a first storage zone containing a file (2) of trademarks of the main appliances available on the market, and a storage zone containing code files (3) corresponding ...
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WO/1999/014914A1 |
A carrier reproducing circuit which can stably reproduce carriers even when the CN ratio is low by measuring the phase of a signal by only using such a period that the multi-valued number is few and controlling a VCO or NCO (numerically ...
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WO/1999/014874A1 |
A method and a device for test receiving alternative frequencies without interrupting the reception of DAB frames from the current reception frequency in a DAB receiver. A DAB frame comprises a null symbol which is used to do a first ver...
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WO/1999/010976A1 |
In a first aspect the invention provides an apparatus for processing radio signals for connection to a personal computing device (PCD), in which a stream of digitised intermediate frequency (IF) data is maintained in at least one directi...
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WO/1999/008382A1 |
The invention concerns an RDS radio receiver (100) comprising a control unit (22) summing up the measurement values signalling bad reception and comparing them to a predetermined threshold value (30), after a low-pass filter, said contro...
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WO/1999/008249A1 |
The invention relates to the ability to use a remote control device which emits audio, such as ultrasonic, or light, such as infrared, signals to change the condition of electrical apparatus such as a television broadcast signal receiver...
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WO/1999/008165A1 |
A programmable remote controller is programmed by a PC that has an onboard data base for sets of codes used by a variety of commercially available remote controllers. The data base contains sets of compressed codes. In order to program t...
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WO/1999/001933A2 |
A multiple-mode receiver incorporating direct conversion (processing received signals using intermediate frequencies within the same frequency range as the received signal bandwidth) rather than superheterodyne circuitry, allowing receiv...
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WO/1999/001930A2 |
The invention relates to a band-pass filter which has a pass band with a comparatively large pass-band width while at the same time presenting comparatively steep sides leading towards the stop-band and little damping in the pass band. T...
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WO/1999/000967A1 |
For synchronous transmission between two telecommunications units, the devices must always be synchronized. Typically, a reference signal is required for synchronization. The reference signal can be transmitted from one unit to another e...
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WO/1998/058451A2 |
Known is a digital communication device, such as a pager, with an AFC loop. In order to avoid erroneous tuning in such a receiver to a strong adjacent channel, frequency offset compensation should be done over a limited range. A robust A...
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WO/1998/057470A1 |
A clock regeneration circuit for regenerating a clock signal for demodulating data from an AM data multiplex modulated signal where digitally modulated signals are multiplexed in the same frequency band as those of an amplitude-modulated...
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WO/1998/057467A1 |
In a multi-band, digital communication system such as a dual-band digital cellular telephone system, baseband signal processing is accomplished by selecting, from amongst a number of baseband signal processing parameter sets, a best, mos...
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WO/1998/053554A2 |
In a receiver, a phase-locked loop (PLL) is provided for synchronizing its oscillator (OSC) with a carrier (CA). A calibration circuit (CAL) calibrates the phase-locked loop's oscillator (OSC) as follows. It measures (FMC) the frequency ...
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WO/1998/052292A1 |
A simplified structure is disclosed for a dual-band, double-conversion superheterodyne receiver. All mixer-injection signals are generated by combining the outputs of two phase-locked frequency synthesizers driven by a single reference o...
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WO/1998/049568A1 |
A multi-signal generator which performs modulation at a low frequency and can be reduced in cost by making the outputs of frequency synthesizers commonly usable. Specifically, a multi-signal generator which is provided with a plurality o...
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WO/1998/047228A1 |
The invention relates to a method for creating and storing user-specific operating menus of a radio receiver (1), especially a car radio, and to a corresponding radio receiver (1) for carrying out the inventive method. According to this ...
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WO/1998/045943A1 |
The invention concerns a method and a device for continuous adjustment of control values of an electrical appliance by means of a remote control (1), for example, an audio or video remote control. The electrical energy required for adjus...
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WO/1998/044630A1 |
A program selection system for a consumer digital television receiver includes a numeric keypad and scrolling keys for selecting a channel through which a multi-program bit-stream is received. The numeric keypad and the scrolling keys ma...
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WO/1998/043209A1 |
The invention relates to a device for the remote control of an electronic appliance (30), especially a consumer electronics appliance, using a transponder (22-25) and comprising a mobile part (20) and a transceiver (10). Various codes ar...
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WO/1998/039854A1 |
A receiver with frequency offset correcting function corrects distortion caused by interference between codes and a frequency offset in received signals. In order to correct the distorsion, a frequency offset correcting circuit (21) corr...
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WO/1998/038731A2 |
A method and system for receiving a signal (fs) in a received frequency and shifting the received frequency to become a desired frequency (fs-fin) is provided. The system includes a controllable oscillator (102) for generating a first in...
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WO/1998/035544A2 |
The present invention relates to an improved demodulator for locking onto and tracking a carrier. Harmonic frequencies are occasionally generated by demodulation circuitry. When this occurs, the harmonic frequencies can interfere with th...
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WO/1998/034347A1 |
An auto frequency control circuit which can receive a desired signal in a shortest scanning time corresponding to a current reception C/N ratio. A reception C/N ratio is judged by a C/N ratio calculating unit (20) and a comparator (26) i...
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WO/1998/033319A1 |
An automatic preset mode is to be automatically executed when a television receiver is purchased, a power source is plugged in, and the power is turned on. Also, various information is to be displayed by OSD (on-screen display) during op...
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WO/1998/032233A2 |
In a receiver, two tuners (TUN1, TUN2) allow of a concurrent reception of mutually different signals. The two tuners are merged into one module (MOD). This may give rise to mutual interference. However, there are various cost-efficient m...
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WO/1998/032232A2 |
The present invention relates to a method for assessing digital signals transmitted on a frequency different from that set on the radio receiver. Furthermore, for the application of the inventive method, within a reading cycle, the recei...
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WO/1998/031096A1 |
A method for calibrating a radio receiver (10) includes the steps of calibrating the crystal filter (24) in order to maximise a Receiver Signal Strength (RSS) level and calibrating the crystal filter (24) to minimise a third order interm...
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WO/1998/029958A1 |
In a receiver, a tunable parallel resonant circuit (PRC2) is coupled to an input (IN) of a transistor circuit (MOIC) via a coupling network (CNW). The coupling network (CNW) lacks a varicap diode but includes a coupling resistor (Rc) in ...
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WO/1998/029944A1 |
Method and apparatus for converting a signal from an infra red remote controller to an asynchronous signal which can be applied to a computer and stored in the memory of the computer for subsequent retransmissions by the computer or to a...
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WO/1998/028759A1 |
An RF capacitor circuit (10) having a plurality of capacitors and a method of electronically tuning such circuit is disclosed. The method includes the steps of connecting the capacitors (C1, C2, C3, C4, ... CN) in parallel relation so as...
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WO/1998/027652A1 |
A temperature compensation (TC) circuit (10) for a crystal oscillator module (12) used in a communication device (200). An existing microcontroller (210) of the communication device (200) is used to provide TC digital data (30) for a cry...
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WO/1998/027651A1 |
A temperature compensation circuit (10) for a crystal oscillator module (12) used in a communication device (200). An existing microcontroller (210) of the communication device (200) is used to provide temperature compensating digital da...
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WO/1998/025353A2 |
The invention relates to an apparatus for transmitting RF signals in two widely separated frequency bands. The RF signals in the two frequency bands have the same modulated bandwith. The apparatus utilizes essentially the same radiocommu...
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WO/1998/025158A1 |
A method and apparatus of determining the time for a global positioning system receiver is disclosed. Timing signals derived from a communication system, such as cellular phone transmission signals, are received by a GPS receiver and dec...
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WO/1998/025157A2 |
Methods and apparatuses for deriving an approximate Doppler for a satellite positioning system (SPS) receiver from an approximate location which is obtained from a cellular communication system information source. In one embodiment, an a...
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WO/1998/024204A2 |
The invention relates to a method of measuring a frequency difference and to a receiver operating according to the method. In the method, the frequency difference (220) between the tuning frequency of the local oscillator of the receiver...
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WO/1998/020635A2 |
An RDS or RDBS radio broadcast receiver, utilizing a microcontroller and a serial communication bus, receives a list of alternative frequencies to allow the receiver to switch to an alternative frequency when the quality of the main radi...
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WO/1998/017000A1 |
A Q-multiplier circuit for a filter that is tunable over a wide range of frequencies. Broadband splitter/combiners and broadband linear amplifiers used in the Q-multiplier circuit need little or no compensation. In one embodiment, a tuna...
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WO/1998/017010A2 |
The present invention relates to a multiple band receiver comprised in a mobile terminal. The receiver is able to receive radio signals in an upper frequency band (FB�U?) and a lower frequency band (FB�L?). The multiple band receiver...
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WO/1998/016020A1 |
A DAB receiver which facilitates program selection. The receiver is provided with a data table (31) on which sets of service IDs and time data indicating the serial programs are listed in the order of the broadcasting time and a data tab...
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WO/1998/015055A1 |
The invention relates to a multiple preamplifier circuit for a television tuner having at least one first band (1) with an amplification stage and a second band (2) with an amplification stage. The amplification stage of the first band (...
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WO/1998/015057A1 |
An interactive voice responsive system for radio tuning including a voice recognition device responsive to a verbal command. In response to the verbal input to the voice recognition device (6), a digital signal of the verbal command is s...
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WO/1998/013929A1 |
A receiver (100) for demodulating multiple digital modulation formats including vestigial sideband (VSB), quadrature amplitude modulation (QAM), and offset QAM (OQAM). The receiver includes a timing recovery circuit (126) that produces a...
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WO/1998/013934A2 |
In a tuning method, a commanded-tuning loop (CTL) tunes a receiver (REC) on the basis of a tuning command (TC) and a self-tuning loop (STL) tunes the receiver on the basis of a reception signal. To resolve a tuning conflict between the l...
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