Abstract: An electronic device (9) has an interactive screen display (27) which is interactive with a stylus (10). The electronic device (9) has an actuator (30) associated with an engagement member (18) of a housing (16) of the device. The actuator (30) is actuated when the stylus (10) engages the engagement member (20) to provide an activation signal indicative of the stylus engaging or disengaging the engagement member (20). As a result, the electronic device (9) or display screen is inactivated or activated when the stylus (10) engages the engagement member (20).

Abstract: A communication system (10) provides content to communication devices (12) over one or more wireless channels that support packet data communication under a specified radio packet data transmission protocol, such as GPRS. The communication system (10) receives proximity and functionality information from the communication devices (12). Based on the proximity and functionality level information, the communication system (10) determines an optimum data rate and optimum content format for communicating the content with the communication devices (12). Using the optimum data rate and content format, the content is transmitted to the communication devices (12) over a wireless channel, thereby optimizing the air time and providing the best user experience regardless of communication device capability or position.

Abstract: A digital signal processor for processing data including voice messaging data that may have both voiced and unvoiced speech components utilizes computer routines stored in a memory used by the digital signal processor. The computer routines programmed provide for control of at least a portion of a selective call receiver; receiving and decoding data received at the selective call receiver; comparing the addresses received at the selective call receiver with addresses stored in a memory location coupled to the digital signal processor; controlling voicing including both voiced and unvoiced speech components; and generating a pitch wave using an inverse discrete Fourier Transform and resample the pitch wave to provide a time domain voiced speech component.

Abstract: A method is provided for background scanning in a selective call communication system (102) having a plurality of channels (110, 112, 114), wherein a selective call device (104) has designated thereto one of an odd and even frame compulsory decoding schedule. The selective call device (104) decodes system configuration information (SCI) on odd SCI frames during the odd compulsory decoding schedule, scans for even SCI frames of target channels while maintaining the odd compulsory decoding schedule, and releases or maintains the odd compulsory decoding schedule based on the system configuration information found on the target channels.

Abstract: An orthogonal latch assembly includes a latching member 300 and a catch 400 having a first wedge shaped section 202 and a second wedge shaped section 204. The first wedge shaped section 202 enables engagement of the catch 400 with latching member 300. The second wedge shaped section 204 enables disengagement of the latching member 300 from the catch 400.

Abstract: A system for efficiently controlling the exchange of data between a host bus (190) and an input/output (I/O) register (125) of an elliptic curve (EC) processor (120) having a much wider datapath than that of the host device (100) . A spreading/despreading pattern is determined which spans multiple bit positions of the input/output register (125). In one embodiment, a full combinational circuit (300) is provided to connect a bit position of the host bus (190) to a bit position of the input/output register (125). In another embodiment, a combinational circuit (300) and an intermediate register (410) are provided. In still another embodiment, a spreading-by shifting system (500) is provided which comprises a plurality of subfield modules (520) into which data from the host bus (190) is shifted. The spreading/despreading pattern is achieved through multiplexers (540) connected between the subfield modules (520).

Abstract: A mixer (200, 201) including a transformation circuit (210) is used for frequency converting a first digital signal (208), sampled at a first sampling rate and operating at a first frequency, to a second digital signal (214) operating at a desired frequency. The transformation circuit (210) is adapted to modify and filter the first digital signal (208) to eliminate unwanted frequencies in the first digital signal (208) and to alter the first sampling rate of the first digital signal (208) by a predetermined factor to generate a modified and filtered first digital signal (308) operating at a second sampling rate and the first frequency. The transformation circuit (210) is further adapted to mix the modified and filtered first digital signal (308) with a predetermined injection signal (312) to generate the second digital signal (214) operating at the desired frequency and the second sampling rate.

Abstract: A finite field multiplier with intrinsic modular reduction includes an interface unit (1208) that translates an n bit wide data path to a m bit wide data path where n is less than m. Also included is a finite field data unit (1204) with m bit wide registers that is coupled to a finte field control unit (1202). The finite field control unit (1202) includes a microsequencer (1402) and a finite state machine multiplier (1404). The microsequencer (1402) controls the finite state machine multiplier (1404) which performs a finite field multiply operation with intrinsic modular reduction and presents a finite field multiplication product to the finite field data unit (1204).

Abstract: A selective call device (106) for monitoring at least two communication systems. The selective call device (106) has a receiver (204) for receiving information from a first communication system (110), a processor (206) for referencing a time slot assignment on the first communication system (110) to a common time base. The processor (206) calculates timing information relating a common time base and a transmitter (222) transmits the timing information to the second communication system (120) informing the second communication system (120) when to transmit information to the selective call device (106) with reference to the common time base.

Abstract: A method and machine (1) for underfilling an assembly (8) to form semiconductor package is disclosed. The machine (1) has conveying tracks (2) for continuously conveying the assembly (8) past zones. The assembly (8) has a flexible tape substrate (9) with a mounted inverted semiconductor die (10). The machine includes a preheating zone (3), a dispensing zone (4) for dispensing an underfill material onto the substrate (9) whilst heating the assembly (8) to allow the underfill to flow into a gap between the substrate (9) and semiconductor die (10). The machine (1) also has a postheating zone (5) for postheating the assembly (8) after dispensing to provide for a continuous flow of the underfill into the gap.

Abstract: A communication device (100) provides an out-of-range battery saving function (700) for a receiver (104) which receives messages transmitted from at least one transmitter (902) over a radio frequency channel. The communication device (100) includes a signal quality detector (154) which detects when the communication device (100) is out-of-range of the transmitter 902, and a controller (108) which determines when the communication device (100) is out-of-range for a first predetermined period of time (726), generating an out-of-range confirmation signal (728). A first visual warning (214, 216, 222) is displayed on a display (128) and power to the receiver (104) is subsequently suspended by a power control circuit (154). Alternately, when out-of-range for a second predetermined period of time (722) less than the first period of time 726, an out-of-range notification signal (724) is generated.

Abstract: A remote token based information acquisition system (100) operates generate the wireless request and delivery of information corresponding with a uniform resource locator. The system includes a personal messaging device (200) having a receiver (205) that receives a selective call message including a selective call address and a canned message representing the uniform resource locator. A microprocessor (207) operates to determine selection of the personal messaging device, decoding, storage, and presentation the canned message. A transmitter (204) coupled to the processor operates to send a reverse channel message requesting information corresponding with the uniform resource locator.

Abstract: A method and apparatus for determining the transmission time of packets of information in a communication system includes a temporal offset processor (330) which receives transmission delay information from a delay analyzer (315) and soft handoff state information from a control processor (320). This information is used to determine a temporal offset for packets of information. The temporal offset is used by a network arbiter (350) to determine when the associated packet should be transferred in time.

Abstract: The housing (12) for a portable device (10) has a cavity (40) which engages a boss (28) on a U-shaped clip (22) to prevent a relative rotation between the housing (12) and the U-shaped clip (22) whenever a force is exerted on the free end of the U-shaped clip (22) when fitted over a belt. The boss (28) is disengaged from the cavity (40) whenever a force is applied which deforms the U-shaped clip (22), thereby allowing the housing (12) to be rotated to view an annunciator presenting a message. The U-shaped clip (22) rotates about a pivot formed by a first boss (26), and second boss (24) having a D-shape, which engage a first bearing (42) and second bearing (44), respectively. The D-shape of the second boss (24) and configuration of the second bearing (44) enable the U-shaped clip (22) to be assembled to/disassembled from the housing (12).

Abstract: A holster (1) for a for portable communication device is disclosed. The holster (1) has a housing (2) and a garment attachment clip (4). Movably coupled to the housing (2) is a biased latch (5) comprising a locking member (6) an ejector member (7) and an ejector actuator member (8). The locking member (6) and interior surfaces of (9) of the housing (2) co-act to lock a portable communication device in the housing (2). Further, actuation of the ejector actuator member (8) against the bias of the latch (5) provides for unlocking of a portable communication device and at least partial ejection thereof from the housing (2).

Abstract: A base station (222) capable of receiving reverse channel data using two over the air protocols preferably comprises a transmitter (224) and modulator (226) for forward channel transmissions in at least a first protocol, a multi-mode base receiver (228) capable of receiving data on a reverse channel using multiple protocols including the first protocol and at least a second protocol. The dual mode base station further comprises a processor (242) that receives a timing source for the second over the air protocol derived from the remote controller (216) for the second over the air protocol. The processor is preferably programmed to decode timing information from the timing source allowing the multi-mode base receiver 228 to provide a busy indicator to the transmitter 224 and modulator 226 to inhibit the reverse channel of the first over the air protocol during a period set by the busy indicator.

Abstract: A radio communication system includes a voice recognition system (221) for converting (400) a caller's voice message to a textual speech message. The textual speech message is then transmitted to an intended selective call radio (122). To perform these functions, the radio communication system includes a caller interface circuit (218), a transmitter (116), and a processor (222). To perform voice-to-text conversion, the processor is adapted to cause the caller interface circuit to sample a voice signal generated by the caller during a plurality of frame intervals, and to apply a Fourier transform thereto, thereby generating spectral data. The spectral data is subdivided into a plurality of bands. The spectral envelope of the spectral data is then filtered out to generate filtered spectral data. A Fourier transform is applied thereto to generate an autocorrelation function for each band.