Abstract: The present invention provides a modem (100), method (300) and device (103) for indicating received signal strength and presence for intensity modulated binary-coded data packets with reduced recovery time in a packet data receiving system. The device includes a receiver for binary coded wireless data packets having a first band-pass processing unit, for receiving modulated electromagnetic signals and converting the modulated electromagnetic signals to binary data signals and a second band-pass processing unit, coupled to the receiver, for providing a logarithmic received signal strength indicator signal, RSSI, using a low-frequency cutoff f.sub.L2 greater than a low-frequency cutoff f.sub.L1 of the first band-pass processing unit.

Abstract: A method (400), device and system (300) provide, in response to linguistic information, efficient generation of a parametric representation of speech using a neural network.

Abstract: The present invention provides a method (600) and device (400) for minimizing wind-induced noise in a microphone. The device includes: a housing (412) having a recessed area shaped to accommodate a microphone transducer (410); the microphone transducer (410), situated within the recessed area such that a thin film situated over the microphone transducer is flush with/overlaying a top of the recessed area and affixed at least to the sides of the recessed area, for receiving sound; and the thin film (402) has at least one aperture (404, . . . 406) for allowing sound to impinge on the microphone transducer (410), and has a minimal thickness that maintains structural integrity.

Abstract: The present invention provides a method (300) and system (200) of contention-based multiple access for the reservation subchannel to support a large population of users with diverse QoS requirements wherein users are permitted to transmit reservation messages in reservation slots in a coordinated manner to contend for the privilege to transmit data messages in the data slots. In the event of a collision in the reservation slots, a prioritized contention resolution algorithm is used to resolve the collision.

Abstract: The present invention provides a system (100), device (400, 500) and method (600, 700) for forward error correction (FEC) coding and interleaving in a variable length burst transmission communications system. The system incorporates at least one shortened FEC encoder to accomplish FEC coding and burst interleaving for transmission from a variable length burst data source. Decoding/de-interleaving is accomplished by a device consisting of at least one fixed length FEC decoder. The technique of padding with zero symbols at the end of burst is used in the device to allow decoding with fixed length FEC decoders and for minimizing delay.

Abstract: A system (200) and method (300) provide an efficient communication system for distributing digital multimedia/HDTV signals to multimedia units in a cellular pattern. The method includes: 1) using at least a first primary wide area-antenna for, where selected, transmitting a digital multimedia/HDTV signal per frequency allocation over at least a portion of a predetermined reception area, wherein a plurality of patterns of cells tesselates the predetermined reception area; and 2) using cell-site antennas having transmitters, each located in a cell, for, where selected, transmitting, when the primary wide area-antenna is deselected, at least a first preselected digital multimedia/HDTV signal over an area of the cell, for providing the HDTV signal to a plurality of digital receivers in accordance with a predetermined scheme, wherein the digital multimedia/HDTV signal is associated with a predetermined frequency allocation.

Abstract: A synchronous coherent orthogonal frequency division multiplexing, SC-OFDM, system, method, software and device include a plurality of SC-OFDM transmitters and a plurality of SC-OFDM receivers. Each of the plurality of SC-OFDM transmitters is synchronized to a reference where the reference is derived from a common source, for transmitting SC-OFDM signals. The plurality of SC-OFDM receivers is arranged to receive the SC-OFDM signals from at least one of the plurality of SC-OFDM transmitters. The SC-OFDM signals each have a cyclic extension, and the SC-OFDM signals from each SC-OFDM transmitter include at least one pilot code in accordance with a predetermined pilot code scheme.

Abstract: A method, access point device and a perpherical device provide low complexity dynamic persistence for random access in a wireless communication system. The peripheral device includes: A) a block assignment receiver, for receiving a block assignment having a source address which contains a contention address and a persistence level and identifying the contention address and reading the persistence level; B) a random number generator, coupled to the block assignment receiver, for generating a random number based on the persistence level; and C) a persistence based transmitter, coupled to the random number generator, for transmitting a payload burst containing a resource request based on the random number and the persistence level.

Abstract: A low power regenerative feedback device and method automatically increases bias current during positive large-signal slewing, enabling output to change faster. When the device is not in a positive slew, bias currents are unchanged, providing a low standby current. Since regenerative feedback is internal and automatic to the device, current is increased only for the device driving an active column of an LCD panel. Thus, the present invention is power efficient. In addition, the AC response of the device is preserved because the device utilizes a regenerative feedback circuit that does not add appreciable excess phase shift. The device achieves an output that switches readily from positive supply to negative supply.

Abstract: A holographic optical interconnect system (100) and method (200) provide flexible, efficient interconnection of a plurality of circuit boards CBs and a plurality of integrated circuit chips. Each CB has at least an optically transparent substrate OTS mate parallel to the CB and extending outside a CB holder. Each OTS mate has parallel sides and carries at least two holographic optical elements HOEs. A first one of the HOEs on a first OTS mate reflects at least a predetermined portion of a first light beam transmitted by a transmitter on a corresponding CB to another HOE, which transmits a received light beam via free space outside the CB holder. On another OTS mate, two HOEs are utilized to receive and direct at least part of the light beam received to a detector on a corresponding CB via free space within the circuit board holder or reflection within the OTS mate.

Abstract: The present invention provides a system (100, 200), device (300) and method (400) for facilitating automatic capture of internet access information in a broadcast signal for use by an internet access unit. The system includes: a broadcasting unit having an internet access information unit, IAIU, coupled to receive internet access information, for encoding the internet access information into a broadcast signal to provide an augmented signal and broadcasting said augmented signal; a receiving unit for receiving the augmented signal for a user; a capture unit, coupled to the receiving unit and interfaced with the internet, for automatically storing/utilizing the internet access information in accordance with a predetermined scheme; a display/television screen/audio unit, coupled to the capture unit and, where selected, to the capture unit, for displaying at least one of: information obtained by utilizing the internet access information and information from the broadcast signal.

Abstract: Board delamination during the singulation from a board panel and board sagging during front-end assembly are two biggest problems encountered in cellular manufacturing lines. The method (700) and circuit board panel (600) of the present invention substantially eliminate assembly-line delamination and sagging for circuit board manufacturing. A number of slots are punched to fit into a circuit board profile. V-grooves are cut along each of the circuit board profiles through the slots and directly opposite on a top and bottom of the circuit board. Thus, optimization of the cut-outs and v-groove configurations eliminate tearing/delamination and substantially reduce sagging.

Abstract: The present invention provides a method, system, subscriber unit, and base/headend unit for a bandwidth efficient multiple user digital communication system that facilitates multiple user reverse link communication using overlapped transmit signal spectra of at least two overlap bandwidth subscriber units. Overlap bandwidth subscriber units receive a forward link signal, each deriving a frequency reference from the forward link signal and a symbol timing reference from the forward link signal, and transmitting a reverse link signal to the base/headend unit that receives a composite reverse link signal of the reverse link signals. Each reverse link signal includes at least one modulated data carrier with distinct carrier frequencies. Each transmitted reverse link signal has a symbol timing responsive to the symbol timing reference, and the frequency spectra of the reverse link signals overlap using overlapped transmit signal spectra of at least two overlap bandwidth subscriber units.

Abstract: The present invention provides a method (200), transceiver (100), and system (900) for providing wireless communication compatible with 10 BASE-T Ethernet. In the transceiver, an absence detector receives a transmitted signal, determines an absence of the transmitted signal, and passes the absence to an activity detector in order to differentiate between a reflected signal and a received signal in a half duplex system. The activity detector receives the received signal and determines an operation time signal in which the received signal is absent.

Abstract: A positioning device (100) provides adaptive positioning for at least a first optical signal to facilitate a serial simplex broadcast between one of: a plurality of transmit communication units and a receive communication unit and at least a first transmit communication unit and a plurality of receive communication units. The transmit communication unit (102) includes an optical transmitter unit (104) for generating a free-space, collimated light beam (126), and the receive communication unit (106) includes an optical receiver unit (108) for detecting a portion of light beam (126) for communication between the transmit communication unit (102) and the receive communication unit (106).

Abstract: Reliable communication is provided by a radio frequency identification system comprising at least one of an interrogator (102) and a transponder (104). The interrogator (102) transmits a plurality of interrogator frames (106) and receives at least one of a plurality of transponder frames (114). The transponder (104) transmits the plurality of transponder frames (114) and receives at least one of the plurality of interrogator frames (106). Each frame in the plurality of interrogator frames and the plurality of transponder frames includes an initialization sequence (108 and 116), at least one information sequence of a first predetermined length (110 and 118), and a check sequence of a second predetermined length (112 and 120) for each information sequence.

Abstract: An automatic frequency control loop structure utilizes a dual selection automatic frequency control unit which is coupled to a differential phase unit and a coherent phase unit to provide a frequency corrected received signal output for efficient tracking of frequency offset drift and a much lower probability of loss of automatic frequency control loop lock. Thus, a signal from a coherent carrier recovery process provides additional benefit by utilization in adjusting frequency offset tracking performance.

Abstract: An automatic frequency control loop structure utilizes a dual selection automatic frequency control unit which is coupled to a differential phase unit and a coherent phase unit to provide a frequency corrected received signal output for efficient tracking of frequency offset drift and a much lower probability of loss of automatic frequency control loop lock. Thus, a signal from a coherent carrier recovery process provides additional benefit by utilization in adjusting frequency offset tracking performance.

Abstract: The visibility of mosquito and blocking artifacts in a video compression system (200) are effectively suppressed by calculating a post-processed pixel intensity. A post-processed pixel intensity is determined (100) using a predetermined noise variance, a predetermined autocorrelation coefficient, and a local neighborhood of pixels that includes a plurality of previously post-processed pixel intensities and a plurality of original pixel intensities. This eliminates the dependency on local signal and noise power estimates.

Abstract: The present invention provides a communication system, device and method of reverse link symbol timing synchronization of transmited signals to facilitate reverse link timing synchronization. A base unit transmits a forward link signal, receives a reverse link signal, and determines a timing offset for signals received on a reverse link timing synchronization channel, wherein the reverse link synchronization channel comprises a plurality of adjacent reverse link carrier frequencies that are utilized by a multicarrier subscriber unit to facilitate reverse link symbol timing synchronization.