279results about How to "Reduce path length" patented technology

The acceleration of peer-to-peer downloads of content files wherein a tracker performs a condition based peer selection that is dynamically adjustable. A further feature relates to the use of enhanced message scheme for communications. One embodiment is a system in a swarm having at least one origin seed capable of at least initially storing the content files with at least one tracker maintaining a list of peers wherein the tracker uses at least one dynamically adjusting peer selection algorithm to generate a condition based peer-list and provides the condition based peer-list to a requesting peer.

An optical data center network system including multiple tier-1 optical switches, multiple tier-2 optical switches and multiple tier-3 optical switches is provided. A pod is formed by the tier-1 optical switches connected to each other through ribbon fibers. A macro pod is formed by the tier-2 optical switches connected to each other through ribbon fibers, and each of the tier-2 optical switches is connected to all of the tier-1 optical switches in one pod. The tier-3 optical switches are connected to each other through ribbon fibers, and each of the tier-3 optical switches is connected to all of the tier-2 optical switches in one macro pod. Each optical switch in each tier is implemented by using the Wavelength Selective Switch (WSS) as a basic element, which has been commercialized numerously.

A method and apparatus for transferring data between a handheld device and a network over a wireless communications link. A datapool manager breaks files into virtual blocks and adds the virtual blocks to a datapool. A communications manager converts the virtual blocks into transportation packets and controls the transfer of the transportation packets between the handheld device and the network. After a transportation packet is transferred, an acknowledgment is returned indicating that the transfer was successful. If the transfer of a file is interrupted, then, upon reestablishing the wireless link, only those transportation packets for which an acknowledgment has not been returned are transferred. To properly reconstruct the file, a pointer indicates the location of each transportation packet in the file. Furthermore, to enable the use of a partially transferred file, a table of information is maintained indicating the validity of the partially transferred file. Transportation packets are identified as instruction packets or data packets. When determining the order of transfer, priority is placed on the transfer of instruction packets.

A sorter, method, and software product are used for sorting objects into a sequence of destination addresses, in at most a single pass through the sorter. In a first stage of the single pass through the sorter, the objects are sorted into a plurality of batches corresponding to groups of the destination addresses. The batches are then eventually advanced from the first stage to a second stage of the single pass through the sorter. During that second stage, objects in each of the batches are sorted into the sequence of destination addresses.

The invention discloses an aircraft optimal path determination method based on mixed probability A star and agent. The method is mainly used to solve problems of too long path length and too large thread value of obstacles to the aircraft. The method comprises steps of: (1) generating a topographical map of the obstacles; (2) arranging a start point SP and a stop point EP of the aircraft in the topographical map of the obstacles; (3) planning a global path of the aircraft by using a probability A star algorithm in accordance with the positions of the start point SP and the stop point EP of the aircraft; and (4) locally optimizing the planned path by using an agent algorithm. The method has advantages of short path length and low thread value, and can be used for determining the optimal path of the aircraft.

A thin sheet (20) disposed on a carrier (10) via a surface modification layer (30) to form an article (2), wherein the article may be subjected to high temperature processing, as in FEOL semiconductor processing, not outgas and have the thin sheet maintained on the carrier without separation therefrom during the processing, yet be separated therefrom upon room temperature peeling force that leaves the thinner one of the thin sheet and carrier intact. Interposers (56) having arrays (50) of vias (60) may be formed on the thin sheet, and devices (66) formed on the interposers. Alternatively, the thin sheet may be a substrate on which semiconductor circuits are formed during FEOL processing.

The invention provides a waveguide flat array antenna, which has the characteristics of broadband and high-efficiency feed. Rectangular open waveguides 11 are used as radiation units; four rectangular open waveguides in one group form a sub array, and are arranged in a 2*2 rectangle and supplied with broadband equal-amplitude in-phase feed by a rectangular cavity 21; and in order to ensure efficient transmission of electromagnetic wave, the joint of each rectangular open waveguide 11 and the rectangular cavity 21 is provided with matched steps 13 and 23. The center of the rectangular cavity 21 is provided with a rectangular window 22 which is connected with a feed network of the next layer. In order to ensure smooth signals, a rectangular matching block 42 is arranged at the feed network corner connected with each rectangular window 22. The feed network consists of multistage parallel E-T so as to ensure that the antenna has enough bandwidth. The transceiving capacity of circularly polarized wave is realized by arranging a circularly polarized cover. Compared with the conventional flat antenna, the waveguide flat array antenna has broader bandwidth and higher feed efficiency.

An apparatus is provided for producing longitudinally corrugated product. The apparatus includes a guide roll for guiding a web of medium material, wherein at least a portion of the guide roll is adapted to be arranged at an angle relative to another portion of the guide roll. The apparatus further includes a plurality of flute forming bars oriented generally along a longitudinal axis of the web to define a first corrugating labyrinth effective to longitudinally corrugate the web to an intermediate geometry. The apparatus further includes a pair of corrugating rollers that cooperate to define, at a nip therebetween, a second corrugating labyrinth effective to longitudinally corrugate the web to a substantially final geometry. The apparatus further includes a web travel pathway for the web that follows a path around a portion of the guide roll, through the first corrugating labyrinth, and through the second corrugating labyrinth.

One embodiment of the present invention provides an apparatus that reduces voltage noise for an integrated circuit (IC) device. This apparatus includes an interposer, which is configured to be sandwiched between the IC device and a circuit board. This interposer has a bottom surface, which is configured to receive electrical connections for power, ground and other signals from the circuit board, and a top surface, which is configured to provide electrical connections for power, ground and the other signals to the IC device. A plurality of bypass capacitors are integrated into the interposer and are coupled between the power and ground connections for the IC device, so that the plurality of bypass capacitors reduce voltage noise between the power and ground connections for the IC device.

A hybrid liquid-jet/laser device may be used to remove material from a tube or sheet to form a medical device, such as a stent. The liquid-jet/laser stream may be impinged against the wall of the tube or sheet between the ends of the tube or sheet, wherein an aperture may be formed in the tube or sheet, followed by a lead-in, and then a full thickness cut. A full thickness cut should be achieved via a lead-in before moving the liquid-jet/laser stream along a final cut path.

A method, apparatus, article of manufacture and system for producing a field pole member for electrodynamic machinery are disclosed to, among other things, reduce magnetic flux path lengths and to eliminate back-iron for increasing torque and/or efficiency per unit size (or unit weight) and for reducing manufacturing costs. For example, a field pole member structure can either reduce the length of magnetic flux paths or substantially straighten those paths through the field pole members, or both. In one embodiment, a method provides for the construction of field pole members for electrodynamic machines.

A method, apparatus, article of manufacture and system for producing a field pole member for electrodynamic machinery are disclosed to, among other things, reduce magnetic flux path lengths and to eliminate back-iron for increasing torque and/or efficiency per unit size (or unit weight) and for reducing manufacturing costs. For example, a field pole member structure can either reduce the length of magnetic flux paths or substantially straighten those paths through the field pole members, or both. In one embodiment, a method provides for the construction of field pole members for electrodynamic machines.

The present invention relates to an interconnect device for a printed circuit board, a method of manufacturing the same and an inter-connect assembly having the same. According to one aspect of the present invention, the interconnect device for a printed circuit board comprises: a first contact section 10 having a bar-like shape for making contact with a second contact terminal 76 in a space transformer 52; a connecting section 12 having an O-ring-like shape of which one side is opened and connected to one end of the first contact section 10 in an integrated manner; a support section 14 having an engaging protrusion 14a in a predetermined portion and connected to one end of the connecting section 12 in an integrated manner; and a second contact section 16 having an O-ring-like shape and connected to one end of the support section 14, wherein the whole inter-connect device is made up of an identical resilient material. According to still another aspect of the present invention, an interconnect assembly having an interconnect device for a printed circuit board, comprises: a printed circuit board 40 including a contact hole 70 in which a conductive film 72 connected to an internal circuitry is formed on the inside wall; a first guide film 60 fixed on a bottom surface of the printed circuit board 40 and having a first guide opening 66 to open the contact hole 70; a space transformer having a second contact terminal 76 on a top portion and a bump 64 in the vicinity of the second contact terminal 76; a second guide film 62 fixed on the space transformer 52, supported by the bump 64, and having a second guide opening 68 to be related with the bump 64; and an interconnect device 2 including a second contact section having an O-ring-like shape to be inserted into the contact hole 70 by an interference fit, a support section connected to the second contact section in an integrated manner to be inserted into the inside of the first guide opening, a connecting section having an O-ring-like shape of which one side is opened and connected to the support section in an integrated manner thereby being placed between the first guide film and the second guide film, and a first contact section connected to the connecting section in an integrated manner for making contact with the second contact section 76 through the second guide opening.

The invention discloses a trajectory tracking control method of an underwater inspection robot. The method comprises the following steps: (1) presetting a reference trajectory for trajectory trackingof the underwater inspection robot, obtaining an optimal path from a starting point to a target point by using a navigation path planning algorithm according to the reference trajectory, and taking the optimal path as a preset reference trajectory of trajectory tracking of the robot; (2) designing a trajectory tracking kinematic controller in combination with the reference trajectory and a kinematic model; (3) carrying out stress analysis on the underwater inspection robot, establishing a dynamic model, and designing a trajectory tracking dynamic controller; and (4) taking a control value of the kinematic controller as input of the dynamic controller to obtain a thrust and a torque required by trajectory tracking, and realizing smooth and stable trajectory tracking control of the underwater inspection robot. By designing a dynamic target function, a problem of speed jump is solved, a lag between an actual trajectory and the reference trajectory is reduced, the shortest tracking step length optimization function item is added into the target function, the path length of the actual trajectory is reduced, and then trajectory tracking energy consumption is decreased; in addition, the influence of the actual underwater environment on trajectory tracking is also considered, and finally smooth and stable trajectory tracking control is realized.