Abstract: A calibration and verification system for a directional sensor, including an industrial control computer and a directional sensor, wherein the industrial control computer is connected to a sensor signal acquisition system, a first triaxial Helmholtz coil and a second triaxial Helmholtz coil, respectively, wherein a heating calibration turntable is disposed in the first triaxial Helmholtz coil and configured to heat and calibrate the directional sensor, and wherein a high-precision inclination and azimuth test turntable is disposed in the second triaxial Helmholtz coil and configured to verify the directional sensor.

Abstract: Seats and seat assemblies, such as for installation into aircraft, are described herein. In some embodiments, a seat assembly can include a framework configured to be mounted within an aircraft and a plurality of seats coupled to the framework. Each seat can include (a) a seat pan slidably coupled to the framework and (b) a seat back pivotally coupled to the framework and rotatable between an upright position and a reclined position. In some embodiments, the seat back is operably coupled to the seat pan such that movement of the seat back from the upright position to the reclined position moves the seat pan away from seat back to increase the effective recline of the seat.

Abstract: Seats and seat assemblies, such as for installation into aircraft, are described herein. In some embodiments, a seat assembly can include a framework configured to be mounted within an aircraft and a plurality of seats coupled to the framework. Each seat can include (a) a seat pan slidably coupled to the framework and (b) a seat back pivotally coupled to the framework and rotatable between an upright position and a reclined position. In some embodiments, the seat back is operably coupled to the seat pan such that movement of the seat back from the upright position to the reclined position moves the seat pan away from seat back to increase the effective recline of the seat.

Abstract: A cooperative spatial multiplexing scheme in which the transmitter (source), equipped with a single antenna, forms virtual antenna arrays from a collection of distributed antennas belonging to different wireless terminals, and transmit a high-rate data stream to those terminals (relays). Each relay detects only a subset (called sub-stream) of the data stream and all relays forward their sub-streams simultaneously over the same physical channel. Then the receiver (destination) nulls and cancels the interference from different relays in order of the magnitude of log-likelihood ratio and detects the signal transmitted from the source.

Abstract: A system for controlling service invocations, applied in a circumstance of a multi-service server, is disclosed, including: a service triggering point, configured to detect a service triggering condition and send a communication event message to a first service control point when the service triggering condition is satisfied; and at least one first service control point, configured to acquire an invocable service indication from the communication event message sent by the service triggering point, and control the execution of the invocable services according to the indication. A method for controlling service invocations, a service control apparatus and a service triggering apparatus are also disclosed.

Abstract: The invention provides a packet network with enhanced service filter criteria, including: a service filter criteria library, configured to store and generate a service filter criterion for a user; a service control point, configured to provide a service to the user; and a service trigger point, configured to obtain the service filter criterion from the service filter criteria library, and determine, according to the service filter criterion, whether a currently processed SIP communication needs to be triggered to the service control point or processed locally, wherein the service filter criterion includes at least one of the following: a message body other than an SIP message Session Description, a session state, a message event other than an SIP initial request message, time, user presence information, a user state, a service invocation message, related information for another criterion, a virtual application server address, filter criterion validity, processing of service invocation result, a service identi

Abstract: In a turbo decoder for code rate 1/n which consists of a decoding block, that is, n−1 constituent decoders, n−2 interleavers and n−2 deinterleavers, one embodiment of a decoding method according to the present invention comprises: a first decoding process of sequentially decoding starting from a first constituent decoder among the n−1 constituent decoders to generate a first log-likelihood ratio; a second decoding process of sequentially decoding starting from a second constituent decoder to generate a second log-likelihood ratio different from the first log-likelihood ratio, the second decoding process being activated in parallel with the first decoding process; a (n−1)th decoding process of sequentially decoding starting from a (n−1)th constituent decoder to generate a (n−1)th log-likelihood ratio different from the log-likelihood ratios, the (n−1)th decoding process being activated in parallel with other decoding processes; a step of optimally weighting respe

Abstract: An inner suspension system for a speaker assembly comprising a center spider, an intermediate spider, and a linear spider. The system reduces distortion of the output from the speaker and increases axial integrity of the movement of the cone. The center spider and intermediate spider are disk shaped and are each attached to the frame of the speaker assembly and to different points on the voice coil former. The linear spider, on the other hand, is cylindrically shaped and is attached to the pole piece of the magnetic motor structure, and the cone converges upon the other end of the cylindrically shaped linear spider.

Abstract: Disclosed is an error correcting method for multispeed play which includes still, normal and high-speed play modes and is one of the most important functions of digital video cassette recorder (DVCR). A decoding method in normal play mode of DVCR comprises a first step of correcting errors with (n.sub.2 -(n.sub.a -k.sub.a),k.sub.2) RS code in each column vector, a second step of correcting or detecting errors with (n.sub.1,k.sub.1) RS code in each row vector, and erasing the entire symbols of a row vector if an error pattern is detected in the corresponding row vector, and a third step of correcting the erasures generated by the row decoder in the second step with (n.sub.2,k.sub.2) RS code in each column vector. The error correcting method enhances the error correcting capability in normal play mode as well as in high-speed play mode, and thus gives a lower symbol error rate than the conventional method does.

Abstract: A speaker box with improved low frequency response. Three chambers of specified proportion are provided which allow vibration of both front-cone and rear-cone sound waves projected from an internally installed low frequency speaker. Housing is provided for one or more higher frequency speakers, further providing rear covers to protect the speakers from low frequency sound wave interference. Ports are also provided for rear-cone sound wave emission.