Abstract: A method and system of position determination using image deformation is provided. One implementation involves receiving an image of a visual tag, the image captured by an image capturing device, wherein the visual tag has a predefined position associated therewith; based on the image determining a distance of the image capturing device from the visual tag, and determining an angular position of the image capturing device relative to the visual tag; and determining position of the image capturing device based on said distance and said angular position.

Abstract: Rebuilding lost data in a distributed redundancy data storage system including multiple nodes, is provided. User data is stored as a collection of stripes, each stripe comprising a collection of data strips and associated parity strips, the stripes distributed across multiple corresponding data owner nodes and multiple corresponding parity owner nodes. A data owner node maintains the associated data strip holding a first copy of data, and a parity owner node maintains a parity strip holding a parity for the collection of data strips. Upon detecting a failure condition, the owner node initiates a rebuilding protocol for recovery of lost data and/or parity it owns. The protocol includes reconstruction of lost data or parity by a computation involving data and/or parity from a recovery strip set in a stripe, wherein a recovery strip set contains at least one surviving data or parity strip. The recovery strip set for a lost data strip contains at least one surviving parity strip.

Abstract: The invention provides a method and system for reducing redundant data blocks. The method includes reducing redundant data blocks by decoding a first data block from a first plurality of data blocks and a bitstream.

Abstract: A compound loudspeaker comprises an acoustically radiating first diaphragm and an acoustically radiating second diaphragm. The first and second diaphragms are substantially coaxial and at least part of the second diaphragm is situated radially outwards of the first diaphragm. There is a gap situated between the first and second diaphragms, and a seal is provided in the gap, thereby preventing or hindering the passage of air through the gap. By providing the seal, the invention solves the problem of audible turbulent airflow through the gap.

Abstract: One embodiment retrieves a first portion of a plurality of stored objects from at least one storage device. The embodiment further performs a base type deduplication estimation process on the first portion of stored objects. The embodiment still further categorizes the first portion of the plurality of stored objects into deduplication sets based on a deduplication relationship of each object of the plurality of stored objects with each of the estimated first plurality of deduplication chunk portions. The embodiment further combines deduplication sets into broad classes based on deduplication characteristics of the objects in the deduplication sets. The embodiment still further classifies a second portion of the plurality of stored objects into broad classes using classifiers. The embodiment further selects an appropriate deduplication approach for each categorized class.

Abstract: The present invention provides a method and a system for device discovery in wireless communication. One implementation involves scanning one or more wireless channels to discover a partner wireless station for a new transmission, by detecting peak energy and beacons on each scanned channel. If a beacon is not detected, then selecting the clearest channel among the scanned channels, and transmitting beacons on the clearest channel. Upon detecting a beacon from a partner station, establishing association with the partner station and selecting a wireless data channel for communication with the partner station. Another implementation involves discovering a partner wireless station to establish a data channel for communication with a discovering station that is associated with a coordinator station, and transmitting a bandwidth reservation request to the coordinator to reserve channel time for control message exchange between the discovering station and the partner station.

Abstract: A method to manage data located on networked devices is provided. The method includes replicating objects residing on the devices and collecting information about at least one of the objects or the devices. The method further includes receiving input on desired information governance policies and outcomes and analyzing the replicated objects, collected information and received input to determine an information governance action.

Abstract: These inventions provide a method and an apparatus for rolling food dough without causing slipping between the food dough and rolling rollers and without causing twisted shrinkages in the food dough, and disk-shaped food dough manufactured by the method. Further, these inventions relate to the disk-shaped food dough manufactured by the method and the apparatus. The apparatus used for the method is comprised of a cradle that can relatively ascend away from and descend toward a table, and conical-shaped rolling rollers rotatably disposed at the cradle, which rollers can swivel. When the food dough is rolled by means of the rolling rollers by pressing the food dough, the rolling rollers rotate so that the speed of the rotation is higher than that when they are passively rotated by the swiveling motion. The relative speed of the descent of the rolling rollers toward the food dough is controlled so that the speed gradually decreases from the initial speed.

Abstract: A system and method for wireless communication of uncompressed video data includes concealing corrupted portions of video data. Video packets received are transmitted over a wireless channel. Each of the video packets includes data blocks forming video data representing at least part of a video frame. Each of the data blocks is encoded with an error correction code. A data block determined to be corrupted is replaced with an uncorrupted data block selected from the data blocks in the video packets. The corrupted data block includes a first displayable element on the video frame and the uncorrupted data block includes a second displayable element on the video frame. The uncorrupted data block is selected at least partially based on proximity between the first and second displayable elements on the video frame.

Abstract: A phase plug comprises a body having an input side for receiving acoustic waves and an output side for transmitting acoustic waves, the body including a plurality of channels extending from the input side to the output side for propagating acoustic waves through the body. The input side comprises an input surface which includes a plurality of openings constituting entrances for the channels, the input surface being substantially part of a sphere or an ellipsoid in shape. The areas of the openings vary with radial position on the input surface, the radial position being measured in a direction extending perpendicularly from a central axis extending through the input surface. The variation in the areas is a function of the cosine of an angle subtended at the centre of the sphere or a focus of the ellipsoid between the central axis and the radial position.

Abstract: A phase plug comprises a body having an input side for receiving acoustic waves and an output side for transmitting acoustic waves, the body including a plurality of channels extending from the input side to the output side for propagating acoustic waves through the body. The input side comprises an input surface which includes a plurality of slots constituting entrances for the channels, each slot being arranged in a substantially radial orientation on the input surface about a central axis extending through the input surface. Substantially the entire input surface situated between the slots is concave and substantially part of a sphere or an ellipsoid in shape.

Abstract: A suture anchor (e.g. 100) for knotlessly securing nearby tissue to bone is formed from an anchor body (e.g. 101/102) that includes a mechanism for being securely anchored to the bone, an elongated suture puller (e.g. 122) extending through the anchor body with a proximal end for being pulled in a proximal direction by a surgeon and a distal end (e.g. 125) with a suitable mechanism for engaging suture (e.g. 127), suture (e.g. 132) carried by the engaging mechanism (e.g. 127) at the distal end (e.g. 125) of the elongated suture puller (e.g. 122), and a suture locking mechanism (e.g. 110) that substantially prevents the suture (e.g. 122) from moving in at least a first direction after being pulled into and through the anchor body (e.g. 101/102) by the elongated suture puller (e.g. 122).

Abstract: An automated disaster recovery (DR) planning system for a computing environment is provided. A discovery module discovers servers, networks, and storage devices in a computing environment. An expert knowledge base module captures best practices in planning, and capabilities, interoperability, limitation and boundary values for different DR technologies. A match-making module determines multiple DR plans as combinations of one or more replication technologies that can be used to satisfy DR requirements. And, an optimizer configured for assessing a feasible DR plan from said multiple DR plans, to deploy for DR planning of a primary computing environment.

Abstract: A method and system for processing high definition video data using remainder bytes is disclosed. In one embodiment, the method includes receiving an information packet having the length of L bytes, wherein L=(M×n×K)+A, and where: M is the depth of an interleaver, n is the number of interleavers, K is an encoding code length and A is the number of remainder bytes with respect to M×n×K bytes, wherein the remainder bytes are located at the end of the information packet, and wherein M×n×K bytes represent M×n codewords. The method further includes converting the A remainder bytes into a plurality of shortened codewords, wherein each of the shortened codewords is shorter in length than each of the M×n codewords. At least one embodiment of the invention provides much lower padding efficiency while improving the decoding performance.

Abstract: A wireless communication system and method for wireless communication are disclosed. One embodiment of the system includes a wireless communication device. The device includes a receiver configured to receive a data packet via a channel. The device further includes a transmitter configured to send an acknowledgment (ACK) signal via a low-rate channel upon receiving the data packet. The low-rate channel has a directional mode and an omni-directional mode. The acknowledgment signal includes a low-rate physical layer (LRP) preamble and an acknowledgment (ACK) header including a mode index field. The mode index field includes a plurality of bits indicative of whether the ACK signal is transmitted using the directional mode or the omni-directional mode.

Abstract: A system and method of wireless data communication over a network of devices and device types are disclosed. In one aspect, the beacons of a first device type are sent and received from devices of the first device type or a second device type, by a first device of the first device type. A plurality of beacons of the first device type or the second device type are sent or received from a plurality of devices of the first device type or a second device type, by a second device of the second device type. Each of channels by the first device is sensed. A free channel for data communication between the first device and the second device is located. Beacons of the first device type are sent out by the first device. Channel reservations of time blocks are made of the free channel for data transmissions.

Abstract: The invention provides a method and apparatus for determining sizing of chunk portions in data de-duplication. The method chunks input data into segments where each segment has a first size, assigns an identifier to each of the data segments, assigns an index to each of the identifiers, creates a suffix structure and a longest common prefix structure from the indexes, detects repeated sequences of indexes and non-repeated indexes from the suffix structure and the longest common prefix structure, determines a second size based on said detected repeated sequences and non-repeated indexes, and chunks the input data into a second plurality of data segments each having the second size.

Abstract: A method and system phase tracking in a wireless communication system is provided. Phase tracking involves receiving a first Orthogonal Frequency Division Multiplexing (OFDM) symbol and a second OFDM symbol which is a repetition of the first symbol, over a wireless channel, the symbols representing an incoming signal. A phase of the incoming signal is extracted by performing phase tracking across all subcarrier data tones and pilot tones of the symbols.

Abstract: A system and a method of using fast Fourier transform (FFT) based tone interleaver for OFDM are disclosed. One embodiment of the system includes an OFDM transmitter, which includes an inverse fast Fourier transform (IFFT) subsystem. The IFFT subsystem includes a bit-reversal (or quarternary-digit reversal depending on implementation) module followed by a butterfly operator. The bit-reversal (or quarternary-digit reversal) module output is connected to the butterfly operator input. The OFDM transmitter further includes a tone interleaver having an input and an output. The symbol interleaver output is connected to the bit reversal (or quarternary-digit reversal) module input. The tone interleaver is configured to rearrange the input symbol sequence such that the symbol sequence input to the tone interleaver input is the same as the symbol sequence input to the butterfly operator input.