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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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WO/1998/012811A1 |
The invention concerns a method of determining a transmit frequency as an alternative to a transmit frequency set at a receiver, a new transmit frequency being selected as the alternative transmit frequency only when its reception qualit...
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WO/1998/008593A1 |
The disclosed self tuning electrical system includes a transformer (258) having a primary and a secondary. The transformer primary is coupled to receive an electrical drive signal and the transformer primary presents an electrical input ...
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WO/1998/008109A1 |
This invention concerns a process for initializing a receiver and a positioning signal receiver. A series of transmitter identifiers are searched for an active transmitter and the series consists of transmission identifiers of satellites...
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WO/1998/007241A2 |
The invention relates to a method for adjusting carrier frequency in a radio system, and a radio system, a base station (200) comprising measuring means (201) for measuring the received carrier frequency and for comparing the measured ca...
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WO/1998/005136A2 |
A radio receiver, in particular car radio, has a memory for transmission frequencies and codes associated to the transmission frequencies. When transmission frequencies stored in the memory are successively selected, said transmission fr...
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WO/1998/001949A1 |
A method and a system for tuning a resonance module in a radio base station are disclosed. The resonance module has tuning means, a transmitter connection, and an antenna connection. High-frequency input and output signals on the transmi...
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WO/1998/001993A1 |
A television tuner (10) controller has a memory (22) with a number of sets of remote control codes for use in controlling a television tuner (10), such as a cable box. The television tuner changes the channel it is tuning to a specific c...
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WO/1998/000915A1 |
The invention relates to a process for storing of data of a received carrier frequency of a broadcast transmitter and/ or evaluation of the reception thereof in a data memory of a broadcast receiver. According to said process, the region...
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WO/1997/050187A1 |
Proposed is a switchable loop filter structure which allows a dual mode operation. A low bandwidth mode is used during acquisition of a channel. In case of high rate reception the low bandwidth synthesizer loop is combined with a high ba...
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WO/1997/048195A1 |
A radio receiver (700) uses automatic frequency control for locking a controlled reference signal (108) to a pilot reference signal (114) that has been distorted by multipath fading. The radio receiver (700) is programmed to sample the p...
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WO/1997/047086A1 |
The invention relates to a process for providing a control signal for controlling a radio signal after a change in position. Four monitoring transmit frequencies are stored in the radio receiver. The control signal supplies a counter, th...
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WO/1997/045807A1 |
An impedance (CAR) is fed to an LC-oscillating circuit only in phases in order to adapt the resonant frequency (fR) of the oscillating circuit to the excitation frequency (fE). This is brought about by measuring the difference between th...
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WO/1997/044897A1 |
The present invention relates to a method for programming television signal, in which: a memory device is provided which is able to store tuning data of the receiver; data is supplied to said device which, for a determined area within wh...
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WO/1997/044915A1 |
An automatic frequency control system (30) for use in satellite communications (10, 20, 30) is provided that is preprogrammed with an initial acquisition Doppler offset frequency. The system (30) includes a search mode for accurately det...
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WO/1997/044940A1 |
A method, apparatus and article of manufacture for compensating for carrier frequency error is disclosed. An FM signal is received from an antenna and the received FM signal is provided to a receiver. The receiver takes the FM signal at ...
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WO/1997/044898A1 |
A method, apparatus and article of manufacture for compensating for carrier frequency error is disclosed. An FM signal is received from an antenna and the received FM signal is provided to a receiver. The receiver takes the FM signal at ...
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WO/1997/044921A2 |
A method and apparatus allows a data tuner to communicate information. An identifier of the frequency used to transmit the data may be transmitted by a control center to a receiver coupled to the data tuner to notify a user to tune to th...
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WO/1997/041646A1 |
A communication system is provided for increased communication range between at least two radio communication devices without increasing the output power of transmitted radio signals from the devices, and without increasing the antenna g...
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WO/1997/040585A1 |
A high-frequency signal receiver which lightens the burden of external equipment. In the receiver, one input-output terminal group is connected to the control terminal of a PLL circuit (31), the interface circuit (28e) of a demodulating ...
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WO/1997/039527A1 |
An automatic frequency control (AFC) loop for use in radio frequency systems performs a threshold test on the accumulated error adjustments for controlling a frequency oscillator. Based on this test, the loop adjusts the value contained ...
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WO/1997/038525A1 |
A television receiver which has a tuner (2) which converts a received signal from an antenna (1) into a intermediate frequency signal which is supplied to a synchronous detector (PLL detector 6) through a filter means (SAW filter 4) to t...
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WO/1997/038489A1 |
The RF signals received from the LNB and the corresponding IF signal produced by the tuner may be offset in frequency due to reasons other than a frequency drift of the oscillator of the LNB, such as satellite transponder frequency adjus...
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WO/1997/036421A1 |
Methods and arrangements are disclosed for transferring control data, such as channel numbers, picture and sound settings, from an external control data storage unit into a broadcast receiver (TV, VCR, radio, audio tuner, etc.) or vice v...
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WO/1997/033382A1 |
A precision carrier frequency signal for calibrating a local oscillator (56) of a GPS receiver which is used to acquire GPS signals. The precision carrier frequency signal is used to calibrate the local oscillator such that the output of...
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WO/1997/032421A1 |
A method for locating a carrier (220) includes the steps of tuning to a first anticipated carrier location (240) within a first subband division (216), attempting to locate the carrier (220) at the first anticipated carrier location (240...
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WO/1997/031425A1 |
A method for determining the integrity of a received signal in a frequency tracking environment so that a determination can be made whether Automatic Frequency Control (AFC) can be utilized. Several samples of the frequency are taken (20...
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WO/1997/030511A1 |
An apparatus for generating timing signals from television signals has a filter/complement (110) for filtering the television signals having a first output terminal (I or Q) producing a low-pass filtered signal, and a second output termi...
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WO/1997/025782A2 |
A receiver for receiving both first-type reception signals, for example TV signals, and second-type reception signals, for example FM-radio signals, is described. The receiver may be used in multimedia applications. In the receiver, a re...
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WO/1997/025783A2 |
A receiver for receiving reception signals of a first type, for example TV signals, and reception signals of a second type, for example FM-radio signals, is described. The receiver may be used in multimedia applications. In the receiver,...
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WO/1997/025781A2 |
A receiver for receiving reception signals of a first type, for example TV signals, and reception signals of a second type, for example FM-radio signals, is described. The receiver may be used in multimedia applications. In the receiver,...
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WO/1997/023840A1 |
A circuit is provided to detect when a variation in a power supply provided to a smart card has occurred, indicating a possible fault in the smart card. As an example, the circuit detects this variation by determining when the power supp...
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WO/1997/023987A1 |
A circuit for protecting telephone/modem equipment from damage, includes a source of a subscriber telephone signal. An energy transfer device is coupled to the subscriber telephone signal source and an inductor coupled between the energy...
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WO/1997/023985A1 |
A telephone line monitoring circuit uses an optoisolator (OPTO 2) to convert the telephone line current to a voltage which is applied to the input of an A/D converter (118). The A/D values are coarse values representing telephone line cu...
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WO/1997/023989A1 |
A subscriber callback modem, includes a source of callback data. A modem is coupled to a subscriber telephone line, and a control circuit (60) is coupled between the data source and the modem (50), for conditioning the modem to automatic...
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WO/1997/023954A1 |
An electronic system including a connector (J1) for an external device such as an infrared receiver (12) includes a signal processor (20), responsive to the infrared receiver and an electrical isolation device such as an optocoupler (18)...
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WO/1997/023957A1 |
The description relates to a combining oscillator with a phase-indexed control circuit for a radio receiver in which a digital loop filter in the control circuit comprises an integrator for digital output signals from the phase discrimin...
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WO/1997/023953A1 |
A high-frequency device for receiving digitally-modulated high-frequency signals, which has a high oscillation resistance, of which the tuning is easy and which outputs clear oscillation signals. The high-frequency device is provided wit...
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WO/1997/023955A1 |
A controllable crystal oscillator, producing a clock signal at a desired frequency, includes a voltage controlled crystal oscillator (110) producing a signal at a subharmonic of the desired frequency. The voltage controlled crystal oscil...
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WO/1997/023958A2 |
A receiver, an arrangement and a method are proposed for comparing two signals, based on testing whether a first signal exhibits at least one property during a first time interval, and consecutively testing if a second signal exhibits at...
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WO/1997/023034A1 |
A frequency agile modulator which modulates input baseband video and audio signals to a selected NTSC channel. The modulator includes a microprocessor which has as inputs a channel up push-button switch and a channel down push-button swi...
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WO/1997/023080A1 |
An improved automatic frequency correction acquisition system utilizes an automatic frequency correction (AFC) loop (22) having an acquisition mode and a tracking mode. The AFC is switchable in response to predetermined control signals b...
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WO/1997/020398A1 |
A frequency synthesizer loop (200) includes a first voltage controlled oscillator (201) and a first divider circuit (202) for dividing a frequency of an output signal generated by the first voltage controlled oscillator (201) by a factor...
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WO/1997/019431A1 |
A transmitter device (remote control unit) (1) for sending light or sound signals for remote control of an apparatus, where the remote control unit has a form clearly indicating in which direction the remote control unit is to be oriente...
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WO/1997/017759A1 |
A tuning mechanism is provided with a tuning circuit (1) constituted by cascade-connecting two phase shifting circuits to each other and a frequency control circuit (2) incorporating a phase difference detecting circuit (3) and a control...
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WO/1997/017760A1 |
A tuning mechanism is provided with a tuning circuit (1) constituted by cascade-connecting two phase shifting circuits and noninverting circuit with each other and a frequency control circuit (2) incorporating a synchronous rectifying ci...
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WO/1997/014056A1 |
A combined GPS and communication system having shared circuitry. The combined systems includes an antenna for receiving data representative of GPS signals, a frequency converter coupled to the antenna, a frequency synthesizer coupled to ...
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WO/1997/014057A1 |
A global positioning system (GPS) receiver has first circuitry for receiving and processing pseudorandom sequences transmitted by a number of GPS satellites. The first circuitry is configured to perform conventional correlation operation...
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WO/1997/014049A2 |
A GPS receiver in one embodiment includes an antenna which receives GPS signals at an RF frequency from in view satellites; a downconverter coupled to the antenna for reducing the RF frequency of the received GPS signals to an intermedia...
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WO/1997/014053A1 |
A GPS receiver having multiple GPS antennas. Also described is a method of tracking employing the GPS receiver and a communication transmitter. Also described is a garment having a GPS receiver and a GPS antenna and a communication anten...
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