Patents Assigned to Nokia
  • Radio telephone
    Patent number: 6377820
    Abstract: A portable radio telephone is provided with a headset having a user actuable switch and a microphone. The handset of the radio telephone includes circuitry for responding to the operation of the headset by the user to select or generate information such as a telephone number.
    Type: Grant
    Filed: July 13, 1998
    Date of Patent: April 23, 2002
    Assignee: Nokia Mobile Phones Limited
    Inventors: Nicholas John Courtis, David Keith Bye, Eric Thomas Ronney
  • Mobile communication systems
    Patent number: 6377804
    Abstract: A method of operating a mobile telephone within a geographical area having overlapping coverage from a first, GSM, network and a second, UMTS, network, where said GSM network is the home network (HPLMN) of the mobile communication device and said GSM and UMTS networks provide respective first and second sets of services in said geographical area. The method comprises registering the telephone with the GSM network when a service of said first set is requested and registering the device with the UMTS network when a service of said second set, but not of said first set, is requested. The method provides the mobile telephone with a roaming for service function.
    Type: Grant
    Filed: June 11, 1998
    Date of Patent: April 23, 2002
    Assignee: Nokia Mobile Phones Ltd.
    Inventor: Raino Lintulampi
  • Integrity check in a communication system
    Publication number: 20020044552
    Abstract: A method of communication between a first node and a second node for a system where a plurality of different channels is provided between said first and second node. The method comprises the step of calculating an integrity output. The integrity output is calculated from a plurality of values, some of said values being the same for said different channels. At least one of said values is arranged to comprise information relating to the identity of said channel, each channel having a different identity. After the integrity output has been calculated, Information relating to the integrity output is transmitted from one of said nodes to the other.
    Type: Application
    Filed: October 10, 2001
    Publication date: April 18, 2002
    Applicant: Nokia Networks Oy
    Inventors: Jukka Vialen, Valtteri Niemi
  • Modulator structure for a transmitter and a mobile station
    Patent number: 6373345
    Abstract: A modulator having a high signal-to-noise ratio. The modulator comprises a switching arrangement and a driver arrangement coupled to the switching arrangement, said driver arrangement comprising driver components and among the driver components a low-pass filter arrangement. The modulator can be used, for example, in the transmitters of dual-band mobile stations without separate filters for each frequency band.
    Type: Grant
    Filed: October 29, 1999
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Ltd.
    Inventors: Harri Kimppa, Simo Murtojarvi, Markus Pettersson
  • Integrated multiplier circuit
    Patent number: 6373317
    Abstract: An IC multiplier circuit has four cells having bipolar transistors to give an exponential input-output function. Each cell has a squaring bipolar transistor and an emitter follower. Differential output signals are taken from the squaring bipolar transistor. The voltage follower is an emitter follower with the bias current through it is substantially larger, e.g. about 10 times larger, than the bias current through the squaring bipolar transistor, which has an emitter resistor.
    Type: Grant
    Filed: October 25, 2000
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Ltd.
    Inventors: Pekka Kostiainen, Kari Halonen, Tuomas Huikko
  • Method for user identity protection
    Patent number: 6373949
    Abstract: In the method in accordance with the present invention, the subscriber identifier to be sent to the transmission network is encrypted using a cipher key common to a specific group of subscribers, and a random number is attached to the identifier to be sent to the network. For example, a subscriber group may consist of the subscribers to a single given operator. The section of the identifier specifying the subscriber group is sent to the network in a non-encrypted format, in which case the network is able to direct the encrypted message to such a network element where it can be deciphered.
    Type: Grant
    Filed: October 14, 1999
    Date of Patent: April 16, 2002
    Assignee: Nokia Networks Oy
    Inventor: Tuomas Aura
  • Small sized optical transmission unit suitable for non-simultaneous transmission and reception
    Patent number: 6373046
    Abstract: A small sized optical transmission unit suitable for non-simultaneous transmission and reception comprising a transmitter and a receiver operating in the optical wavelenght range is described. The optical unit includes an optical element. Furthermore, both the transmitter and the receiver are arranged to utilize the same optical element. In addition, the transmitter is positioned between the receiver and the optical element.
    Type: Grant
    Filed: October 9, 1998
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Limited
    Inventor: Terho Kaikuranta
  • Method of physical radio channel power control
    Patent number: 6374118
    Abstract: The invention relates to a method of physical channel power control in a radio system and to a radio system. The method comprises (458) establishing a physical channel with at least one spreading code, (452) placing at least one service in the physical channel, and (464) performing physical channel power control according to the carrier/interference target set for the physical channel. According to the invention one service is (460) selected from among the active services placed in the physical channel, and the carrier/interference target of the one selected service is (462) set to lead physical channel power control.
    Type: Grant
    Filed: September 25, 2000
    Date of Patent: April 16, 2002
    Assignee: Nokia Networks Oy
    Inventors: Antti Toskala, Harri Holma
  • Shifting of frequency range and bandwidth of receivers using a mixer attenuating the image frequency
    Patent number: 6374093
    Abstract: The circuit arrangement utilizes both outputs of a mixer attenuating the image frequency, whereby one of the desired frequency bands is obtained from a “signal port” and the other desired frequency band from the “port of the image signal”. Thus a desired intermediate frequency signal band (IF) corresponding to the radio frequency Input signal (RF) can be selected using a switch (24), the intermediate frequency signal band (IF) being filtered by an intermediate frequency filter (20, 22). The frequency (LO) of the local oscillator is selected to be in the middle of the radio bands (RF).
    Type: Grant
    Filed: October 28, 1994
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Ltd.
    Inventor: Mikko Pesola
  • Method and arrangement for implementing convolutional decoding
    Patent number: 6374385
    Abstract: The invention relates to a method and an arrangement for decoding a convolutionally encoded signal which comprises code words and the arrangement comprises a neural network which comprises a set of neurons comprising a set of inputs and an output. The received code words are applied to the inputs of the neurons, and the arrangement combines some of the inputs of the neuron in the neuron. In order to enable efficient decoding of the convolutional encoding, some of the output signals of the neural network neurons are fed back to the inputs of the neuron and the neuron multiplies at least some of the inputs of the neuron with one another before combining. The output signal of a predetermined neuron comprises an estimate of a decoded symbol.
    Type: Grant
    Filed: May 25, 1999
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Limited
    Inventors: Ari Hämäläinen, Jukka Henriksson
  • Cell expansion in a time division cellular system using frequency converting repeaters
    Patent number: 6373833
    Abstract: In a TDMA cellular mobile communications system the radio interface between a mobile station and a base station consists of traffic frames which include several time slots in which in one time slot of an uplink direction frame the mo-bile stations can transmit in an access burst a request to the network to be assigned a radio connection for traffic. A repeater is added in the system through which the radio connection between the base station and the mobile station can pass, if necessary. The repeater converts the carrier wave frequency used by the base station to the carrier wave frequency used by the mobile station, and the carrier wave frequency used by the mobile station to the carrier wave frequency used by the base station. The repeater adds its own burst to the access burst of the mobile station, the said burst including the information which identifies the repeater.
    Type: Grant
    Filed: January 25, 1999
    Date of Patent: April 16, 2002
    Assignee: Nokia Telecommunications Oy
    Inventors: Jukka Suonvieri, Risto Uola
  • Apparatus, and associated method, for selectively modifying characteristics of the receive signal received at a receiving station
    Patent number: 6374083
    Abstract: Apparatus and an associated method for improving the receiver portion of a radio receiver, such as the receiver portion of a radio base station operable in a cellular communication system. A mast head amplifier is provided at a mast head to amplify electrical signals formed by the mast head. The amplification level of the mast head amplifier is selected to be relatively large to more than overcome the loss and sensitivity degradation of the amplified signal when conducted therethrough to other portions of the receiver. An attenuator which exhibits a selected level of attenuation is positioned in-line between the feeder cable and the remaining portions of the receiver. The attenuation level is selected to provide a constant level of gain in a signal provided to the remaining portions of the receiver.
    Type: Grant
    Filed: March 1, 1999
    Date of Patent: April 16, 2002
    Assignee: Nokia Corporation
    Inventor: Veli-Pekka Ketonen
  • Method for implementing a queue in a memory, and memory arrangement
    Patent number: 6374339
    Abstract: The invention relates to a method for implementing a queue, particularly a FIFO queue, in a memory (MEM) and to a memory arrangement. In order to enable reducing the amount of copying particularly in a functional environment, at least part of the queue is formed with a tree-shaped data structure (A, B) known per se, having nodes at several different hierarchy levels, wherein an individual node can be (i) an internal node (N1-N3) containing at least one pointer pointing to a node lower in the tree-shaped hierarchy or (ii) a leaf node (N4-N6) containing at least one pointer to data unit (1 . . . 6) stored in the memory or at least one data unit. A given maximum number of pointers that an individual node can contain is defined for the nodes.
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: April 16, 2002
    Assignee: Nokia Networks Oy
    Inventor: Jukka-Pekka Iivonen
  • Handset
    Patent number: D455726
    Type: Grant
    Filed: May 7, 2001
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Ltd.
    Inventor: Petteri Kolinen
  • Keypad for a handset
    Patent number: D455736
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones, Ltd.
    Inventors: Hanna Vuolteenaho, Anthony Dalby
  • Key array for a handset
    Patent number: D455737
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Ltd.
    Inventors: Pertti Salmi, Jeffrey Higashi, Jamie Langford, Duncan Burns, Frank Nuovo
  • Key matrix for a handset
    Patent number: D455738
    Type: Grant
    Filed: March 30, 2001
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Ltd.
    Inventor: Petteri Kolinen
  • Front cover for a handset
    Patent number: D455739
    Type: Grant
    Filed: December 29, 2000
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Limited
    Inventors: Hanna Vuolteenaho, Anthony Dalby
  • Front cover for a handset
    Patent number: D455740
    Type: Grant
    Filed: March 2, 2001
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Ltd.
    Inventors: Pertti Salmi, Jeffrey Higashi, Jamie Langford, Duncan Burns, Frank Nuovo
  • Display and key array for a handset
    Patent number: D455741
    Type: Grant
    Filed: March 15, 2001
    Date of Patent: April 16, 2002
    Assignee: Nokia Mobile Phones Ltd.
    Inventor: Kelley Ann Chao-Fei Ching Lee