Abstract: An antenna device comprising of two substantial planar and conductive elements where the first element is acting as the radiator of the antenna, and the second element is acting as the ground plane for the radiator of the antenna, said two conductive elements are mounted substantially in parallel by means of a non-conductive housing, and said radiator of the antenna is facing towards the ground plane of the antenna with the cavity in between the first and second conductive elements being filled with air.

Abstract: A mobile equipment (10), such as a cellular radio telephone, includes a controller (18) coupled to a wireless transceiver (14, 16) for bidirectionally communicating with one of a plurality of different networks (32, 32′), such as a GSM network and a Universal Mobile Telecommunications System (UMTS) network. A data storage module (28), referred to herein as a SIM/USIM or as a UICC (UMTS Integrated Circuit Card), is readably coupled to the controller. The module stores information for specifying at least an identification and the operational capabilities of the module in each of the plurality of different networks. The controller is responsive to a request received from one of the plurality of networks through the transceiver for accessing the module to retrieve the stored information and for transmitting the retrieved information to the requesting one of the networks through the transceiver.

Abstract: There is provided a transmitter, and a method using such a transmitter, the transmitter having an amplifier for amplifying a received signal, predistortion means for predistorting a received signal prior to the signal passing through the amplifier means, a transmitter for transmitting a signal, and a control for controlling the transmitted. If the power level of the signal to be transmitted by the transmitter is below a predetermined level, the signal is not predistorteded by the predistortion means and if the power level of the signal to be transmitted by the transmitter is above a predetermined level the received signal passes through the predistortion means and amplifier.

Abstract: A wireless local area network (5) comprises at least one server device (1), one or several peripheral devices (6-15), and circuit (4, 16) for transferring information between the server device (1) and the peripheral devices (6-15). Transmission of information in the wireless local area network (5) is at least partly arranged to be conducted by a plurality of predetermined link agents, wherein the circuit for transferring information comprise circuit (4d, 16d) for generating a predetermined link agent circuit (4a, 16a) for transmitting the generated link agent, circuit (4b, 16b) for receiving the link agent, circuit (4d, 16d) for processing the received link agent, and circuit (4d, 16d) for carrying out one or several operations defined for the predetermined link agent generated.

Abstract: A method is disclosed to distinguish a first type of control channel from a second type of control channel. The method includes steps of (a) transmitting a carrier of the first type of control channel so as to include a first symbol sequence that results, when demodulated, in a sine wave having a frequency with a first offset from the carrier; (b) transmitting a carrier of the second type of control channel so as to include a second symbol sequence that results, when demodulated, in a sine wave having a frequency with a second offset from the carrier; and (c) demodulating a received carrier and detecting whether the carrier includes the first type of control channel of the second type of control channel. In the preferred embodiment of this invention the first symbol sequence is an all zeroes sequence, and the second type of symbol sequence is an alternating ones and zeroes sequence, which results in the first offset being a positive offset, and the second offset being a negative offset.

Abstract: A method and system for providing efficient transmission power control commands to a base station. In a third generation IS-95 CDMA network, for example, cdma2000, the forward pilot channel is used to estimate the received signal power level. In the presently preferred embodiment, a mobile station measures the received pilot channel power, on a forward link pilot channel. The loss experienced on the pilot channel is estimated as the difference between the pilot channel power transmitted at the base station and the pilot channel power received at the mobile station. The pilot power transmission power is typically fixed based upon the operating environment of the base station. The fixed pilot channel transmission power can be transmitted via a message from the base station.

Abstract: The invention relates to the coding of speech at a variable bit rate, whereby the bit rates can vary from frame to frame, and more specifically to the methods and filters used for improving the quality of the decoded speech. In the solution according to the invention the weighting factors of the postfilter are not adapted on the basis of the momentary bit rate or the bit rate used in the coding of each frame, but the weighting factors are adapted according to the average bit rate calculated on the basis of a predetermined length of time. In addition to this, the weighting factors of the postfilter are also adjusted on the basis of whether the frame in question contains a voiced speech signal, an unvoiced speech signal or background noise. At frames containing an unvoiced speech signal or background noise, postfiltering is weakened so as to avoid the distortion of the signal tone because the postfiltering is adapted to a voiced signal.

Abstract: A system is devised for utilizing the speaker in a mobile phone or other appliance as a transducer for monitoring the shock to which the appliance is subjected. The shock signal is processed and stored signals relative to said shock and providing means to access said stored data.

Abstract: A full function keyboard is provided for use with a mobile communication device. The keyboard is constructed in two portions which may be pivoted relative to the body of the device between two positions, one in which the keyboard is hidden and the keypad of the device is exposed for normal use and a second in which the two portions of the keyboard are positioned on opposite sides of the screen of the device to allow holding with both hands and operation with the thumb.

Abstract: A mobile telephone includes a control device, which comprises a receiver to receive an enabling signal and a controller to enable operation of the mobile telephone in dependence upon the enabling signal. An active badge transmits the enabling signal. If the telephone and the badge are separated and the mobile telephone is no longer able to receive the enabling signal, then the controller disables the mobile telephone.

Abstract: A portable radio telephone (5) communicates with base stations (1, 2) in a digital radio telephone system, such as DECT, employing TDMA transmission. The portable radio telephone is programmed with an algorithm which is operative to select a communication channel by storing a blind slot mask (7) representative of the time slots in each frame which are excluded, either by virtue of being occupied by the base station or by the portable radio telephone itself. Hence, any channel attempted and failed in an occupied time slot is excluded and marked blind in the blind slot mask. Further, the algorithm is operative to check the time slots for availability in a predetermined sequence which corresponds to the temporal sequence of the slots (or the reverse thereof) to promote orderly filling of the time slots at the base stations.

Abstract: A method is taught for assigning spreading codes to mobile stations located within a cell, as is a CDMA communications system that operates in accordance with the method. The method includes steps of (A) assigning a set of spreading codes for use in a particular cell; (B) determining values of entries in a spreading code performance table (fixed or dynamic) based on a weighted combination of cross-correlation factors between individual ones of the spreading codes of the set of spreading codes, and also based on an auto-correlation factor of individual ones of the spreading codes of the set of spreading codes, within a delay spread range that is typical for the particular cell; and (C) assigning a spreading code from the performance table by selecting a spreading code that will cause a least amount of interference with a sub-set of already assigned spreading codes.

Abstract: A telephone for setting up a conference call, the telephone comprising a memory for storing data relating to a first and second user; control means for retrieving said data from the memory and originating a call to the first user the control means being responsive to a signal indicating that the first call has been established originates a call to the second user.

Abstract: An electronic device comprising a housing 4, a display for entering and displaying data, the display being disposed in the housing and having a touch sensitive surface 6, and a cover 8 and 28. The cover is coupled to the housing 4 in a movable manner and movable between an open position and a closed position. When the cover is in the closed position, at least a portion of the touch sensitive surface 6 is covered by the cover. The device includes a sensor for sensing whether the cover is in the closed position. The sensor comprises a member 12 and 22 on the cover and a corresponding activation area 66 and 68 of the touch sensitive surface. The member and the corresponding activation area of the touch sensitive surface are in contact when the cover is in the closed position.

Abstract: A two transistor mixer for mixing radio frequency signals in a communications device. A mixer core section comprised of a pair of matched semiconductor devices having their drain ports connected to a first common node through matched load resistors and their source ports connected to a second common node end. A local oscillator (LO) signal input connected to the first and second nodes, wherein the connection to the second node is through a current source. A radio frequency (RF) signal input connected to the gate ports of said pair of semiconductor devices and an intermediate frequency (IF) output obtained from the drain ports of said pair of semiconductor devices.

Abstract: A portable phone is described having a display, input device for inputting information and instructions, and a control unit controlling the display in dependence on the operation of the input device. The input device includes a navigation device for moving a marker in an active part of the display. The navigation device is provided with a roller body and includes the ability for detecting the rolling and depression of the roller body and for providing control signals in response thereto. In an information input mode, the control unit moves the marker in the display in dependence on the rolling control signal and generates a pop-up window upon reception of the depression control signal, the pop-up window covering a part of the active display and containing operations which are allowed in a position defined by the marker.

Abstract: A portable electronic apparatus which includes first and second portions arranged to be movable relative to each other. Electrical connection between the portions is effected through use of a flexible electrical connector. The route of the connector between the two portions is impeded by an obstacle so that in a first configuration, the connector is constrained to follow a first route, and in a second configuration, the connector is constrained to follow a second, different, route.

Abstract: A memory controller for controlling the transfer of data to and from a memory array, wherein the memory array includes a first type of memory and a second type of memory, the first type having a different signalling protocol from the second type of memory, wherein the memory controller comprises: an address decoder having an input for receiving a memory access request, said memory access request including the address of the memory array to be accessed, and an output for outputting the address of the memory array to be accessed; a first sub-controller for generating a plurality of memory interface signals for controlling the first type of memory, said first sub-controller being operated in response to addresses within a first range of addresses output by the address decoder; and a second sub-controller for generating a plurality of memory interface signals for controlling the second type of memory, said second sub-controller being operated in response to addresses within a second, non-overlapping range of a

Abstract: A transmitter has an input for receiving a signal, gain controller for applying a first gain to the received signal, a first path for providing a second, relatively high gain for the received signal, a second path for providing a third, relatively low gain for said received signal, a transmitter for transmitting a signal and a controller to cause a received signal to pass through the gain controller and the first path when a relatively high gain is to be applied to the received signal and to cause a received signal to pass through the gain controller and the second path when a relatively low gain is to be applied to the received signal. When a change is made from using one of the first and second paths to using the other, the power of the signal transmitted by the transmitter varies by less than or equal to a predetermined amount.

Abstract: A method is presented for changing data rates in a communication connection between a transmitting device and a receiving device, in which communication connection—the information to be transmitted is in the form of bits grouped to code words and—bits are diagonally interleaved from code words into symbols, a predetermined number of consecutive symbols consituting a burst. The method comprises constructing the symbol according to a predetermined set of rules, wherein said predetermined set of rules are chosen according to the length of the code words.