| Patent Number |
Title Of Patent |
Date Issued |
| 6850737 |
Antenna direction finding in mobile phones |
February 1, 2005 |
| The present invention describes a communication system comprising a primary radio station (PS) and at least one secondary radio station (SS), intended to be in motion (MOT). The secondary radio station has at least one controllable structure (CS) for communicating with the primary radio |
| 6677541 |
Keyboard and key and telephone apparatus with such a keyboard |
January 13, 2004 |
| A keyboard having keys for inputting characters, wherein a key is arranged to produce a character in response to the press of the key once. The key (30) has a main contact (31) which is always activated when the key (30) is pressed. Also the key has at least one edge contact (32, 33), wh |
| 6510313 |
Wireless communication device |
January 21, 2003 |
| A low cost wireless multi-band communications device automatically adapts itself to a signal received from a particular system. On the basis of a bandwidth determination of the received signal, a sampling bandwidth and/or sampling time is selected and/or derived for down mixing the r |
| 6202932 |
contactless coupling between a host unit and a smart card |
March 20, 2001 |
| A method and module for transferring energy, clock frequency and data information without using an electrically conducting connection between a portable module and host equipment. Energy is transferred as optical radiation from at least two distinct light sources with intensities alt |
| 6195559 |
Communication system, a primary radio station, a secondary radio station, and a communication me |
February 27, 2001 |
| A communication system has a primary radio station and a portable radio station. The primary radio station communicates with the portable radio station. The portable radio station is freely three-dimensionally orientable with respect to a fixed coordinate system. The portable radio s |
| 6182032 |
Terminal switching to a lower speech codec rate when in a non-acoustically coupled speech path c |
January 30, 2001 |
| A communication system has a network and a number of terminals. The network and the terminals have multi-rate speech encoders and decoders. Two terminals may communicate with each other through two-way voice communication where voice paths of the two-way voice communication are acous |
| 6167237 |
Universal wireless communication system, a transmission protocol, a wireless communication stati |
December 26, 2000 |
| A universal wireless communication system comprising at least two wireless subsystems is proposed which is operated at the edge of spectral efficiency while at the same time allowing wireless communication stations to operate such that optimal power saving is obtained under acceptable |
| 6112061 |
Radio communication device |
August 29, 2000 |
| Known is a radio communication device such as a GSM handset with receive-transmit antenna switching means such as a duplexer or a transmit receive switch. In GSM handsets it is highly desirable to save battery power as much as possible. To this end in the receive and transmit paths, |
| 6103417 |
Flat elementary electrochemical cell and precursor element |
August 15, 2000 |
| The invention discloses a flat elementary electrochemical cell including first and second electrode foils between which there are two layers of permeable separator material for an electrolyte under pressure. According to the invention, this cell includes a non-conductive fastening system |
| 5991605 |
Method and circuit for creating a modulated signal in a transceiver |
November 23, 1999 |
| In the method and circuit for creating a modulated signal, one input signal of a phase comparator (509) of a phase-locked frequency synthesizer is an offset frequency (f.sub.2), which is created from an adjustable oscillator's (511) output signal (f.sub.TX) by mixing it with a mixer |
| 5949267 |
Circuit arrangement for generating signals with different phases |
September 7, 1999 |
| The invention relates to a circuit arrangement for generating two signals having a phase difference of approximately 90 degrees. The invention is preferably applied in the demodulator of a radio receiver. In order to shift the phase of a signal one idea of the invention is to use a d |
| 5923204 |
Two phase low energy signal processing using charge transfer capacitance |
July 13, 1999 |
| A charge transfer from signal voltage (U.sub.S) to integrating capacitance (C.sub.O) is accomplished by means of charge transfer capacitance (C.sub.i), an active element (T) and controllable switches (S.sub.61, S.sub.62, S.sub.63, S.sub.64). The operation of the circuit is additional |
| 5831303 |
Field effect transistor utilizing the gate structure two-dimensionally |
November 3, 1998 |
| The object of the invention is a field-effect transistor comprising a drain (D) and a source (S) and a gate (G) with a determined width (W) and length (L), equipped with means (G1-G2) for generating a voltage distribution on the gate in direction of its width. The gate comprises a first |
| 5822366 |
Transceiver and method for generating and processing complex I/Q-signals |
October 13, 1998 |
| The invention relates to a transceiver for generating complex I/Q-signals on a transmission frequency (f.sub.TX) and for receiving them on a reception frequency (f.sub.RX). The device comprises a first frequency synthesizer (41) for forming a first mixer signal (f.sub.LI) for the mixer |
| 5754541 |
Data transmission method, base station, and subscriber terminal |
May 19, 1998 |
| A base station, subscriber terminal, and data transmission method in a CDMA cellular radio network having in each cell at least one base station which communicates on a specified traffic channel with the terminal equipments (Mobile Station) located within its area, the signal of the user |
| 5732108 |
Method and apparatus for producing a difference signal between two signal frequencies, and for d |
March 24, 1998 |
| A frequency difference signal of a modulated signal (f.sub.1) and an unmodulated signal (f.sub.2) is produced maintaining the information of the frequency or phase modulation. According to the method, the time-related order of entry of the front edges of the pulses of the modulated a |
| 5497116 |
Method and apparatus for processing signals |
March 5, 1996 |
| The present invention relats to a method for processing a signal, and a signal processing circuit according to the method, in which circuit one or two transistors (T1, T2) switched according to the switches are used as the active member of the entire circuit, the charge passing through s |
| 5387874 |
Method and circuit for dynamic voltage intergration |
February 7, 1995 |
| An integrating circuit is formed in the present invention, of which the active element is a pair of bipolar transistors (T5/T6) or a CMOS transistor (T8) which with the aid of switches (s81 to s88) controls the storing of a sample charge from the signal voltage (Us) in a sampling cap |
| 5325075 |
Method and circuit arrangement to generate a phase modulated or frequency modulated signal |
June 28, 1994 |
| The invention relates to a method, in which a phase modulated or frequency modulated signal can be directly generated with a PLL frequency synthesizer. With an interpolating synthesizer it is possible to create a very dense output frequency (f.sub.x) raster, so that the pulses received |
| 5285165 |
Noise elimination method |
February 8, 1994 |
| The present invention relates to a method for eliminating noise in a signal. The frequency band of the signal is divided into sub-bands, whereafter the useful value of the signal of each sub-band is determined by comparing the signal level to a reference level, in which case a consta |
| 5270666 |
Method and circuitry for demodulation of angle modulated signals by measuring cycle time |
December 14, 1993 |
| An FM or PM signal is demodulated so that the cycle time of the modulated input signal is measured using a time-to-digital converter comprising a counter that uses a moderate clock frequency as a reference clock, a digital delay line interpolator and a control circuitry. The counter is |
| 5079520 |
Interpolating phase-locked loop frequency synthesizer |
January 7, 1992 |
| The invention concerns are interpolating frequency synthesizer based on digital phase locking, with which frequencies can be produced which lie between frequencies defined by integer divisors. Traditional frequency synthesizers employ frequency dividers in which the dividing ratio is an |
| 4408170 |
Component with trimmable electric impedance |
October 4, 1983 |
| An electric component is disclosed with trimmable complex resistive-capacitive impedance comprising a first resistor layer forming a ground plane, an insulation layer connected thereover and a second resistor layer connected over the insulation layer. The second resistor layer is div |
