Abstract: A system to perform angle quantization includes a log ROM lookup table to provide a log of a real input (10) of a signal and a log of an imaginary input (20) of the signal. A subtractor (100) computes the difference between the log of the real input and the log of the imaginary input to provide a difference (102) equivalent to a division of the inputs, and a ROM lookup table (110) determines a phase from the difference.

Abstract: An asynchronous SFQ logic cell that is amenable to being used in combinational logic circuits. Rather than encode each digital logic bit as one SFQ pulse, each logic bit is encoded as a series of SFQ pulses. As such, merge and join circuits can be used for elementary logic cells to form asynchronous combinational logic circuits in accordance with the present invention. Such circuits are relatively faster and denser as well as more compatible with existing synchronous SFQ logic circuits.

Abstract: An error correction and detection technique provides a correction code for correcting single bit errors as well as detecting but not correcting two adjacent bits in error. A received word, which may contain errors, is multiplied by a parity check matrix to produce a syndrome corresponding to one of first and second mutually exclusive sets of syndromes if the received word contains at least one error, each single bit error in the received bit word corresponding one-to-one with a member of the first of the sets of syndromes and each two bit adjacent error corresponding non-uniquely to a member of the second of the sets of syndromes. A syndrome containing all zeros is produced if the received word contains no errors. One bit data errors in the received word are corrected, two bit errors are reported, and no action is taken if the word contains no errors.

Abstract: An apparatus (10) for helping to protect a vehicle occupant includes an inflatable vehicle occupant protection device (16) and a inflator (12) for providing inflation fluid to inflate the vehicle occupant protection device (16). A non-azide gas generating material is in the inflator (12). The non-azide gas generating material when combusted produces inflation fluid which comprises carbon monoxide (CO) and nitrogen oxides (NOx). A catalyst system which contacts the inflation fluid is also in the inflator. The catalyst system is reactive with the carbon monoxide (CO) and nitrogen oxides (NOx) in the inflation fluid. The catalyst system comprises a zeolite and a catalytic material. The catalytic material is supported by the zeolite.

Abstract: A device (10) is presented for controlling remote convenience function at a vehicle (32) and for interpersonal communication between two operators. The device (10) has components located in a common housing (24). The components include structure (e.g., 14-22) for communicating input from an operator of the device, structure for generating radio frequency signals responsive to the input from the operator of the device, structure for receiving other radio frequency signals from another device responsive to communication input from a operator of another device, and structure for converting the other signals from the operator of the other device into output perceptible by the operator of the device. The output corresponds to the input communicated from the operator of the other device.

Abstract: An optical inverting system employs a first optical structure having an index of refraction that varies with the intensity of an incident beam and a second optical structure having a constant index of refraction, and forming an interface therebetween. An optical pulse stream is combined with a laser beam and the combined beam is applied to the first optical structure, impinging the interface at a predetermined angle of incidence. If the angle of incidence is less than a critical angle, the beam is refracted into the second optical structure. If the angle of incidence is greater than the critical angle, the beam is completely reflected at the interface. Thus the output of the second optical structure is an inversion, and the output of the first optical structure is a level shifted replica, of the optical digital pulse stream.

Abstract: An apparatus comprises a vehicle occupant protection device (14) and a gas generating material (18). The gas generating material (18), when ignited, produces a combustion gas that actuates the vehicle occupant protection device (14). At least about 45% by weight of the gas generating material (18) is a mono-propellant selected from the group consisting of 3-nitramino-4-nitrofurazan and hydroxylammonium 3-nitroamino-4-nitrofurazan. 0 to about 48% by weight of the gas generating material (18) is an oxidizer. 0 to about 15% by weight of the gas generating material (18) is a binder.

Abstract: The present invention provides a method for custom coding uplink signals and downlink beams in a satellite communications system. The method includes the step of applying, at a ground station (100), an outer code (102) to an uplink signal to produce an outer coded uplink signal. Next, the ground station (100) applies a selected reduced complexity inner code (104) to the outer coded uplink signal to produce a concatenated coded uplink signal. The ground station (100) transmits the concatenated coded uplink signal to a satellite (110). At the satellite (110), the inner code of the concatenated coded uplink signal is decoded (116) to produce an outer coded satellite data stream. Next, the satellite (110) applies a selected inner code (120) to a portion of the outer coded satellite data stream to produce a concatenated coded satellite data stream. The satellite (110) then transmits the concatenated coded satellite data stream in a downlink beam to a destination ground station (126).

Abstract: A HEMT device comprises a buffer layer disposed over a substrate. A partially-relaxed channel is disposed over the buffer layer and a barrier layer is disposed over the channel. A cap layer is disposed over the barrier layer and a gate is positioned on the barrier layer. A source and a drain are positioned on the barrier layer on opposite sides of the gate.

Abstract: An optical interconnect for use with a probe beam and optical signals is disclosed. The interconnect comprises an optical waveguide for propagating the probe beam, an optical transcription material that changes a characteristic of the probe beam at locations where the optical signals interact with the probe beam. A signal processor develops an output signal from the changed characteristic representative of the information contained in the optical signals. The optical signals may be amplitude or phase modulated or polarized. The interconnect can be configured to add and subtract the optical signals.

Abstract: The invention is a receiver and a method of receiving data having a preferred application in a satellite. A receiver in accordance with the invention includes at least one memory (118, 120), each memory including an addressable storage array which stores a sequence of data samples contained in a time division multiplexed signal and outputs the stored data samples from a plurality of channels in a sequence of data groups with each data group containing a plurality of samples from one of the plurality of channels; and an outer decoder (102), responsive to data blocks with each data block containing at least one data group, which decodes the data blocks and outputs decoded data blocks.

Abstract: An assembly (20) for use in a vehicle suspension system for connection with a wheel (14) of a vehicle includes first and second hollow hydroformed sections (42 and 44). In one embodiment of the assembly (20), upper and lower pivot mountings (110 and 68) are connected with the hollow hydroformed sections (42, 44). A wheel mounting section (24) is pivotally connected with the upper and lower pivot mountings (110 and 68). The pivot mountings (110, 68) allow the steerable vehicle wheel (14) to be turned to effect steering of a vehicle (10). The assembly (20) may be utilized in association with a vehicle wheel (16) which is not steerable. When the assembly is utilized in the vehicle wheel (16) which is not steerable, the pivotal wheel mounting section (24) may be eliminated.

Abstract: A steering shaft (20) is supported in a steering column member (40). A bearing (50) supports the steering shaft (20) for rotation relative to the steering column member (40). An adhesive (70, 72, 74) fixes the bearing (50) in position between the steering shaft (20) and the steering column member (40). The adhesive (70, 72, 74) is cured in a non-elastic state.

Abstract: A steering shaft (20) is supported in a steering column member (40). A bearing (50) supports the steering shaft (20) for rotation relative to the steering column member (40). An adhesive (70, 72, 74) fixes the bearing (50) in position between the steering shaft (20) and the steering column member (40). The adhesive (70, 72, 74) is cured in a non-elastic state.

Abstract: Communication satellite downlink transmitting and reception techniques includes circuitry which groups a predetermined number of data cells with a predetermined error correction code to generate frame bodies. The circuitry also groups the frame bodies with header symbols and trailer symbols to generate data frames. One or more modulators enable the placement of the modulated data frames into a plurality of frequency bands having a predetermined frequency range and a predetermined transmission rate. One or more antennas transmit the modulated data frames over one or more beams with different forms of polarization to other antennas. A demodulator is connected to demodulate the radio carrier signals and the beams into data frames from a plurality of frequency bands. Decoders are connected to decode the frame bodies with header symbols and with trailer symbols from the data frames and to decode four data cells as a group by using a predetermined error correction code.

Abstract: A dual-clad fiber laser employs a multi-mode pump fiber array for introducing pump light into a dual-clad fiber array along the length of the array. Each fiber in the dual-clad fiber array includes a single mode core, a multi-mode inner cladding layer and an outer cladding layer. Each fiber in the multi-mode fiber array includes a multimode core and an outer cladding layer. The inner cladding layer and the core are the same material and the outer cladding layers are the same material. The dual-clad fiber array is a fiber ribbon wound on a bobbin. The multi-mode pump fiber array is a fiber ribbon that is wrapped around the outside of the dual-clad fiber ribbon on the bobbin. A doped silica frit is placed between the fiber ribbons, where the dopant makes the frit have an index of refraction greater than the index of refraction of the outer layers.

Abstract: A broadcast optical communication system is disclosed. It comprises an optical waveguide having a plurality of gratings. A first grating is disposed at a first node and couples light impinging normally into the waveguide, propagates coupled light bi-directionally through the waveguide and emits a portion of the coupled light at a second grating in a direction normal thereto. An optical source is disposed proximate the first node for transmitting light normally to the first grating and an optical detector is disposed proximate the second node for detecting the normally emitted light. In another embodiment multiple optical waveguides and source-detector pairs are employed in a parallel data architecture to provide multiple channel broadcast communication.

Abstract: A GSO satellite constellation (10) and an NGSO constellation (20) may be used to send various types of communication signals and multimedia signals to an aircraft (30). The video signals are demodulated by a demodulator (46) and routed by a router (64) to TV monitors (72 and 74), as well as short-term video storage (78). Data can be received and transmitted by a low gain, narrowband transmitter/receiver (100) in order to provide voice, computer and control communications at all times during the flight of aircraft (30).

Abstract: A vehicle has a seat (2) for a vehicle occupant and a vehicle floor pan (4). An apparatus (10) includes a vehicle seat frame (20) for supporting a load of the vehicle occupant and a weight sensing mechanism (40) for sensing the load. The weight sensing mechanism (40) includes a parallelogram linkage (50), a sensor lever (70), and a sensor (79). The parallelogram linkage (50) includes a first beam (52) and a second beam (62) parallel to the first beam (52). The beams (52, 62) have adjacent interconnected first ends (54, 64) that receive the load of the vehicle occupant and adjacent interconnected second ends (56, 66) that transmit the load of the vehicle occupant to the vehicle floor pan (4). The beams (52, 62) bend in response to the load of the vehicle occupant. The sensor lever (70) is interposed between the beams (52, 62) and deflects upon bending of the beams (52, 62).

Abstract: A device (10) is presented for controlling remote convenience function at a vehicle (32) and for interpersonal communication between two operators. The device (10) has components located in a common housing (24). The components include structure (e.g., 14-22) for communicating input from an operator of the device, structure for generating radio frequency signals responsive to the input from the operator of the device, structure for receiving other radio frequency signals from another device responsive to communication input from a operator of another device, and structure for converting the other signals from the operator of the other device into output perceptible by the operator of the device. The output corresponds to the input communicated from the operator of the other device.