Abstract: A portable radiotelephone device is provided that includes a body having provided on one or more exposed surface thereof one or more electrical contacts for one or more respective electrical input/output devices. The electrical contacts are covered with one or more layers of electro-resistive material. The electro-resistive material in the relaxed condition being an electrical insulator and in the stressed state being an electrical conductor. The arrangement is such that to effect electrical connection between any of the one or more electrical contacts with respective one or more electrical input/output devices, respective contacts and input/output devices are mutually engaged so as to load the elasto-resistive material under compression.

Abstract: In a speech recognition method and apparatus, according to the present invention, feature vectors produced by an analysing unit of a speech recognition device are modified for compensating the effects of noise. According to the invention, feature vectors are normalized using a sliding normalization buffer (31). By means of the method according to the invention, the performance of the speech recognition device improves in situations, wherein the speech recognition device's training phase has been carried out in a noise environment that differs from the noise environment of the actual speech recognition phase.

Abstract: The invention relates to a method (500) and an arrangement for defining transmission power in a mobile station. The invention can preferably be applied in a TDMA (Time Division Multiple Access) cellular system which offers broadband services and in which the number of time slots to be used for data transfer can be changed during the connection (530). One fundamental idea of the invention is that the transmission power of a new time slot is defined in the mobile station on the basis of the transmission power of at least one other time slot used in the connection (560). If the connection has had one time slot for its use when a new time slot is being allocated, for the transmission power of the new time slot, the same value is preferably set as at the previous time slot.

Abstract: Apparatus and method for concealing an error in a frame of a video sequence. The video sequence includes a plurality of frames and being encoded as at least two independently-coded signals, each of which represents a sub-set of frames of the video sequence. The method includes receiving said at least two signals, identifying an error in a frame of the video sequence, and concealing the error by predicting corresponding data using at least one frame which is encoded in a signal 10b other than that in which the error is identified.

Abstract: A radio receiver in which the length of time that it takes to synchronize with a burst to be received is used as a measure of the quality of the channel over which the burst is transmitted.

Abstract: A system to adapt the MAC rules of the IrLAP specification to accomodate various IR transceiver devices with media sense utilizes an IrDA protocol stack having a series of layers including: IR Protocol OSI Model Layers Transaction Service 3. Link Management Protocol Network Connection-less LSAP; LMP Connection-less data. 2. Link Access Protocol Data Link Connection-less data; LAP Framing: Rx & Tx; MAC. 1. Connectivity Physical IrDA-SIR, where LSAP is the Link Service Access Point. This kind of protocol stack can be applied to a very large variety of devices, such as, remote controllers with feedback for tuners; can be used for data transactions by request, e.g., pager reporting of received numbers; and is applicable to data acquisition systems, such as, portable GPS reporting of changes of location and medical systems.

Abstract: A handset is disclosed which comprises a display 3 and a scroll key 9 for scrolling data on the display. The scroll key has two portions which lie on a line oblique to the horizontal. When depressed these portions effect different scrolling actions.

Abstract: A method of coding an audio signal comprises receiving an audio signal x to be coded and transforming the received signal from the time to the frequency domain. A quantised audio signal {tilde over (x)} is generated from the transformed audio signal x together with a set of long-term prediction coefficients A which can be used to predict a current time frame of the received audio signal directly from one or more previous time frames of the quantised audio signal {tilde over (x)}. A predicted audio signal {circumflex over (x)} is generated using the prediction coefficients A. The predicted audio signal {circumflex over (x)} is then transformed from the time to the frequency domain and the resulting frequency domain signal compared with that of the received audio signal x to generate an error signal E(k) for each of a plurality of frequency sub-bands.

Abstract: A method of operating a mobile communication system supporting data transmission between a mobile station (MS) and a network in a number of a different packet data protocols (PDPs) including a point-to-multipoint-multicast (PTM-M) protocol. PDP data is formatted and unformatted by a subnetwork dependent convergence protocol (SNDCP) according to the PDP of data. The PDP is identified to the SNDCP by a protocol identifier transmitted between the network and the mobile station. In order to allow a MS to receive a PTM-M in an IDLE state, a unique protocol identifier is permanently assigned to PTM-M transmissions whilst other identifiers are dynamically assigned to other PDPs by the network.

Abstract: Voltage controlled oscillator assembly which includes at least one voltage controlled oscillator, and a regulator for regulating the output power from the at least one voltage controlled oscillator.

Abstract: A support for an optical system of a digital camera is constructed which provides adjustable positioning of the lens elements in response to signals from the camera control processor. The support comprises multiple tubes, mounted for relative coaxial movement, which support a lens element. At least one of the tubes is adjustable in position relative to a main support tube. The adjustable tube is engageable by piezoelectric elements. Each piezoelectrical element is mounted to a flexible printed circuit board which contains the camera operating system and is mounted on the support tube.

Abstract: A method of transferring a data packet from a providing communication terminal to a requesting communication terminal, wherein the requesting communication terminal transfers a message to the providing communication terminal including a requests for receiving the data packet and a first unique identification code identifying the requesting communication terminal. Upon receipt of the message the providing communication terminal verifies the validity of the first unique Identification code. When the verification has been ended successfully, the providing communication terminal responds by transferring a message to the requesting communication terminal including the requested data packet and a second unique identification code, Then the requesting communication terminal verifies the validity of the second unique identification code and stores the data packet accordingly when the verification has been successful.

Abstract: An electronic device which comprises a speech synthesizer including a loudspeaker, arranged to convert an input dependent upon punctuated text, to an audio output representative of a human vocally reproducing the text. It also comprises a user input device for inputting instructions to navigate through text, between positions defined by punctuation identifiers of the text, to a desired position, and a controller arranged to control navigation to the desired position and provide the speech synthesizer with an input corresponding to a portion of the text from the desired position, in response to input navigation instructions.

Abstract: For conveying coded digital information in the form of multiple-valued symbols from a transmitter to a receiver, the steps of a) encoding digital information in a Hybrid Concatenated Code encoder (501), b) mapping the encoded digital information into multiple-valued symbols in a Multi-Level Coding encoder (511, 512a-d, 513, 514), c) transmitting the multiple-valued symbols, d) receiving the multiple-valued symbols, and e) decoding the received multiple-valued symbols in a Multi-Stage Decoder (800) are employed.

Abstract: A method of searching an electronic phonebook of a cellular phone, where the phonebook contains a multiplicity of names each being made up of one or more alphanumeric characters. The method comprises defining a search template by selecting a letter from a displayed list of the alphabet. The set of distinct data strings, present at the beginning of stored names, which commence with said template and which differ from one another by only their final character, are then identified. The user then selects one of said set of data strings as a new search template. If the number of names matching the new search template is less than some predefined number, then those names are displayed. If not, then the process is repeated using the new extended template.

Abstract: An IQ generator is integrated into an IC for generating IQ output signal. The IQ generator includes a signal generator providing input with two identical signals opposed in phase, a filter comprises a plurality capacitances and inductances, and output providing the I and Q signals. The capacitances and inductances of the filter are integrated into said integrated circuit.

Abstract: A circuit interfacing a balanced RF power amplifier with unbalanced load has a first shunt inductor and a series capacitor connected to a first output and a first shunt capacitor and series inductor connected to a second output of amplifier. The circuit comprises a second shunt inductor connected to the second output and feeding current to the second output. The first shunt capacitor may correspond to a sum of capacitors required to resonate with the series inductor and second shunt inductor. The second shunt inductor may exceed a value required to resonate with the capacitance of the first shunt capacitor less the capacitance required to resonate with the series inductor, by the same amount as the first shunt inductor exceeds the value required to resonate with the series capacitor. The circuit may further comprise a second shunt capacitor connected to first output, whereby first shunt capacitor exceeds sum of capacitors required to resonate with series inductor and second shunt inductor.

Abstract: A method for use in a speech recognition system in which a speech waveform to be modelled is represented by a set of feature extracted parameters in the time domain, the method comprising dividing individual ones of one or more of said feature extracted parameters to provide for each divided feature extracted parameter a plurality of frequency channels, and demodulating at least one of the plurality of frequency channels to provide at least one corresponding baseband frequency signal.

Abstract: A radiotelephone handset has a housing having a front face to be presented to the face of the user when making a call, together with a user interface comprising an audio interface and a touch interface. The touch interface includes touch input means (26) on another face (20) of the housing to the front housing, for directing the processing of voice signals supplied to the audio interface.

Abstract: 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), which is activated, in addition to the main contact (31), when the key (30) is pressed at the point or close to the point of the edge contact (32, 33). The activation of predetermined contacts correspond to the inputting of a predetermined character.