Abstract: A technique is used in a spread spectrum communication system (100) such as cdma2000 or UMTS to assign a subscriber unit (120) a link for a supplemental channel, during a handoff period. The technique includes queuing a data packet for transmission to the subscriber unit at a packet transmission time (221) determined by a queue delay (220), obtaining pilot signal strength measurements of at least two active downlinks (125) of the subscriber unit that are measured substantially at the packet transmission time, and determining a strongest one of the at least two active downlinks from the pilot signal strength measurements. The pilot signal strength measurements are obtained by determining a pilot signal measurement time (PSMT) for the subscriber unit, calculating a pilot signal measurement delay (PSMD) from the PSMT and the queue delay, and transmitting a pilot signal measurement request (PSMRQ) to the subscriber unit after the PSMD.

Abstract: An in-vehicle system (10) having a radio (12) sends and receives messages that include an identifier that uniquely identifies the vehicle and that further includes affinities as correspond to the vehicle and/or occupants of the vehicle. The messages can constitute requests for information (43), offers to provide information (44), and other representations. Such requests and offers can correlate to an information payload contained within the message and/or to the affinities set forth in the message identifier.

Abstract: A memory interface device (100) providing a fractional address interface between a data processor (104) and a memory system (102) and a method for retrieving intermediate data values from a memory system using fractional addressing. The device includes an address generator (108) for generating first and second memory addresses, the first memory address being less than or equal to a specified fractional address, the second memory address being greater than or equal to the fractional address. The device also includes a memory access unit (110) coupled to the address generator (108) for retrieving first and second data values from the memory system (102) at the first and second memory addresses, respectively. The device also includes a data access unit (112) for interpolating between the first and second data values and passing the interpolated value to the data processor (104).

Abstract: A system controller (106) is for transferring a low bit rate digital voice message. The system controller generates from an analog voice signal representing the voice message a set of speech model parameters, and generates a first derived set of speech model parameters from a first subset of the set of speech model parameters, the first derived set encoding the voice signal at a second voice quality and second vocoder rate that are less, respectively, than a first voice quality and vocoder rate. The system controller transmits (3610) the low bit rate-digital voice message comprising the first derived set of speech model parameters to a communication receiver (114). The communication receiver requests (3640) an incremental message when the quality of the voice message is unsatisfactory. The system controller generates and transmits (3555, 3650) an incremental message-and the communication receiver uses (3660) the incremental message to generate a higher quality voice message.

Abstract: In-vehicle resources (wherein the resources each provide a common category of capacity to effect a processor effected activity) are leveraged by selecting the processor activity, selecting for at least one vehicle, a plurality of in-vehicle resources, and parsing facilitation of the processor effected activity by parsing the common category of capacity across the plurality of in-vehicle resources.

Abstract: A pixel image sensor having an array of pixel elements arranged in a color mosaic pattern, each pixel element being responsive to light of a particular color. Each pixel element is supplied with a reference voltage signal corresponding to the color of light to which the pixel element is responsive. The reference voltage signal determined the sensitivity of the pixel element. The white balance of the image sensor is adjusted by varying independently the reference voltage signals for each color. The color mosaic pattern of the array may include a pixel element responsive to white light. The output from the white pixel sensors may be used to adjust the color constancy of the image sensor. The image array reduces the need for post-capture processing of the image for white balancing, by incorporating the white balance operation into the capture process.

Abstract: A time-integrating pixel sensor having a photo-detector, a capacitor, a comparator and a pixel data buffer. In operation, the photo-current from the photo-detector charges the capacitor and produces a photo-voltage. The photo-voltage sensed by the capacitor and a reference voltage is compared with the comparator. If the photo-voltage exceeds the reference voltage, a global code value is latched into the pixel data buffer. The optical power falling on the photo-detector is determined from the latched code value. An array of sensors is incorporated into a semiconductor device together with circuitry to read and decode the pixel data buffers. The reference voltage may be varied in time to increase the dynamic range of the sensor.

Abstract: A handheld device 100 such as a personal digital assistant (PDA) or the like, a handwritten input user interface (HIUI), a method of interfacing handwritten text and a program product therefor. A lower portion of a touch enabled display is designated as a handwriting input area 104. Action icons 106, 108, 110, 112 and 114 are disposed at a right side of the handwriting user interface 102. Recognized text is displayed on the screen in a text display area located between a file management tool bar 116 and the handwritten input area 104. A scroll bar 118 is disposed at the right side of the display 112. As text is continuously entered each individual word may be recognized, and inserted into the end of the text stream. A word separator 120 may demarcate or bracket individual words in a continuous input stream. A secondary list of potential recognition candidates may be available for display in a box 128 and offered for substitution for or in lieu of the recognized word.

Abstract: The current invention provides a method for managing a dialogue between a processing system and a user. It addresses the problem of inferring possible feature values by automatically generating an SQL query from a frame representation posting this query to a relational database containing the relevant domain knowledge, and updating the frame representation to reflect the results of this query. Because the method is not dependent on particular information of the domain utilizing the method, it can be readily implemented for any specific application which benefits from inferring possible feature values by extracting data from a database.

Abstract: A method for re-establishing communication between a base station (102) that transmits on a forward channel, and a subscriber unit (108) that has temporarily lost the forward channel, uses the concept of a re-registration interval. The base station (102) transmits, to subscriber units (106, 108) in its area, a signal indicating the duration of a re-registration interval. A subscriber unit that has temporarily lost the forward channel determines whether the duration of such loss exceeds the re-registration interval. If the interval is exceeded, the subscriber unit sends a re-registration signal to the base station on a reverse channel. A selective call transceiver (400) is programmed to operate as a subscriber unit that uses the re-registration interval.

Abstract: An adaptive forward error correction technique based on noise bursts and the rate at which they occur is disclosed. The forward error correction parameters are determined using statistics describing the noise burst duration and period. The occurrence, duration and period of the noise burst are determined by the error vector magnitude calculated during the decoding process.

Abstract: A method of fabricating a high vacuum device by providing two major, parallel spaced apart glass sides in a substantial vacuum, forming a continuous edge between the sides and forming a tack with a metallic diffusion bond between the sides. The metallic diffusion bond is formed of materials that bond and cure faster than the material of the continuous edge so that the tack holds the sides in a fixed position while the continuous edge is curing.

Abstract: A system controller (106) includes a speech encoder (107) that encodes a low bit rate digital voice message. The speech encoder sets values of words of a header of the encoded message. The values of the words define a quantity of frames in the voice message, N, and define a vocoder rate used for the encoded message. The speech encoder sets a state of each indicator in each frame status field of N frame status fields that are transmitted after the header of the encoded message. The speech encoder assembles N frame data fields, wherein each of the frame data fields comprises a set of data words. The N frame data fields follow the N frame status fields. Each set of data words conforms to at least one of the vocoder rate and the states of the indicators. A decoder (3310) decodes the encoded low bit rate digital message.

Abstract: A receiver direct current offset correction loop (DCOCL) circuit digitizes the baseband analog control voltage (148) using an Analog-to-Digital Converter (ADC) block 160, which is then processed at control block (162) to drive compensation circuitry 164 in a classic feedback configuration. The DCOCL is augmented by an independent automatic gain control (AGC) circuit that utilizes the same control signal (148). The AGC circuit includes a multiplicity of adjustable gain stages (114, 118, 158) with threshold and characteristic response that is controlled by AGC control block (122). Both the AGC and DCOCL circuits are dynamically configured for optimum complimentary operation via the microprocessor (236) depending on the receiver's operating environment and protocol requirements. Subsequent direct current (DC) voltage drift is detected by the digital signal processor (DSP) block (230) which in turn flags the microprocessor to reinitiate the correction sequence when needed.

Abstract: Methods and apparatus for adding additional circuitry (19) to a circuit board (11) having a radiation shield (14) associated therewith include the additional circuitry (19) mounted onto a flex circuit (21) which in turn is mounted on the radiation shield (14). A conductor (32) containing portion (24) of the flex circuit (21) extends therefrom and is routed around and through a cutout (18) in the bottom surface of the radiation shield (14). The conductor (32) is connected to the printed circuit board (11) at the location of the cutout (18) in the radiation shield (14).

Abstract: A PIN diode antenna RF switch especially suited for a multi-mode transceiver that includes a full duplex mode such as an AMPS analog mobile telephone. Six PIN diodes (30, 32, 34, 36, 42, 46) are configured as RF switches which are controlled by an arrangement of four DC switches (60,64,68,72) to produce a high degree of isolation in a path parallel to a duplexer (52) and low insertion loss in transmitting modes while optimizing current drain.

Abstract: A buck or boost (BOB) power converter circuit. A buck converter is cascaded with a boost converter to form a buck or boost circuit (20). The BOB converter is controlled by a controller (26) such that only the buck or boost converter is operating at any given time. A reference signal Vref can be applied to the controller (26) such that the output voltage from the converter closely tracks the reference signal. Positive and negative ramp signals are generated and an error feedback signal is compared with the ramp signals to control the output in accord with Vref. This is useful in application of the output voltage as the power supply to an RF Power Amplifier (16) so that the reference signal can represent the envelope of a signal to be transmitted and the RF PA (16) can operate at high efficiency.

Abstract: A technique is used in an infrastructure (150) of a two-way radio synchronous communication system (100) to efficiently acquire a predetermined type of information from a selective call device (106). The technique includes receiving an inquiry (1), generating a response schedule, generating a response command message (3), transmitting the response command message, receiving a demand response (4), and accepting the demand response as an acknowledgment to the response command message. The inquiry includes a device latency needed for the selective call device to generate the predetermined type of information and includes a response length. The response schedule is determined from the device latency and the response length. The response command message includes a special command and the response schedule. The demand response includes the predetermined type of information, and is transmitted in accordance with the response schedule.

Abstract: A DC offset correction loop (200) utilizes a sign bit generator (204), binary search stage (206), and a digital-to-analog converter (208) in its feedback path to correct for DC offsets at the input of a gain stage (202). When a correction value is obtained, it is applied and held (524) to compensate for the DC offset. When a programming event occurs (534), such as detecting an increase in DC offset beyond a threshold, detecting a significant temperature change, or passage of time, a new DC offset correction cycle is initiated.