78results about How to "Less robust" patented technology

A method of synchronizing data transmission between a host computer system and a transmitter across an interface with variable delay or latency. The host computer system marks transition frames between successive transmission intervals and transfers the outgoing frames across the variable interface to the transmitter. The transmitter enqueues outgoing frames into one or more FIFO transmission queue(s) and processes the enqueued frames as appropriate for the communication protocol in use. Marked frames are detected as they reach the head of the appropriate transmit queue. In particular, while bypassing is not active, the transmitter transmits unmarked frames until the end of the current interval, or until there is insufficient time in the interval to transmit another frame or until a marked frame is detected. While bypassing is not active, the transmitter terminates transmission from the transmit queue when a marked frame is detected during each interval. While bypassing is active, the transmitter discards unmarked frames without transmission until a marked frame is detected. During each interval, the transmitter activates bypassing if a marked frame has not been detected and deactivates bypassing if a marked frame is detected while bypassing is active. The transmitter enables queue mark operation if a marked frame is detected while queue mark operation is not enabled. The transmitter increments a bypass counter each time an interval ends without detecting a marked frame, and disables queue mark operation if the bypass counter reaches a predefined limit.

A frame-based communications system with selectable retry strategy including a controller that programs a retry strategy field of a frame descriptor of a frame, where the retry value indicates a selected one of a normal retry count, an alternative retry count, and at least one "no retry" option. The system includes a transceiver that attempts retransmission of the frame up to as many times indicated by a selected retry count or until expiration of a frame transmit duration, or that does not attempt retransmission if the retry value indicates no retry. The no retry options may include treating the first attempt as successful or returning an unsuccessful attempt as a failure. The frame itself may be programmed with a request to not acknowledge a successfully received frame to recapture the time normally allocated to acknowledgement frames. The transceiver may include acknowledgement logic that is configured to suppress an acknowledgement frame.

A communications system including a scheduling entity and a transceiver coupled across a variable timing interface. The scheduling entity forwards frames for transmission and identifies selected frames as persistent. The transceiver includes a queue, a frame manager and a transmission scheduler. The frame manager receives and enqueues forwarded frames and the transmission scheduler dequeues and transmits frames from the queue and forwards persistent frames back to the frame manager. The transmission scheduler includes persistence logic that detects a persistent mark and asserts a persistent signal that is detected by the transmission scheduler. The scheduling entity identifies a persistent frame by setting a bit in a transmit control field of the frame descriptor. The scheduling entity sends a clear persistence command to the transceiver to clear a persistent mark of an identified frame. The transceiver may be configured for wireless communications.

A method and system for introducing a fluid into a borehole, in which there is arranged a tubular drill string including a drill bit, wherein the drill bit is provided with a passageway between the interior of the drill string and the borehole, and with a removable closure element for selectively closing the passageway in a closing position, and wherein there is further provided a fluid injection tool comprising a tool inlet and a tool outlet, the method comprising passing the fluid injection tool through the drill string to the closure element, and using it to remove the closure element from the closing position, passing the fluid injection tool outlet through the passageway, and introducing the fluid into the borehole from the interior of the drill string through fluid injection tool into the borehole.

A method and system for wireless transmission of information is provided. Such wireless transmission of information involves constructing a payload unit for data, appending a preamble to the payload unit, wherein the preamble comprises a PHY preamble including a MAC header for the payload unit, and transmitting at least the preamble of the payload unit over a wireless channel.

The invention provides a UUV (Unmanned Underwater Vehicle) path tracking method based on self-adaption sliding-mode control. The method comprises the steps of 1, initializing; 2, obtaining a current state of a UUV; 3, establishing an underactuated UUV horizontal error equation to obtain the positional deviation xe, ye and a course deviation value psi e; 4, utilizing a sliding-mode control method to respectively design a speed sliding-mode control law, a position sliding-mode control law and a stem phase angle sliding-mode control law and enabling th ud to be zero, the xe to be zero and the psi e to be zero by controlling thrust Xprop, expected speed (shown in the following image) and torque Nprop; 5, updating a self-adaption law of handover gain and a self-adaption law of boundary layer thickness; 6, performing control input saturation compensation; 7, enabling k = k +1, returning to the step 2 and updating the control laws and the self-adaption laws for the next time to achieve the accurate control on the UUV horizontal path tracking. The UUV path tracking method can only depend on a controller which is designed according to a horizontal dynamical model to stabilize the system and is suitable for various underactuated UUVs.

A self-aligning motor assisted electrical Connector with exterior shape of a solid geometric form and accompanying complementary Receptacle (which when placed together form a Unit) that reduces the conventionally necessary exertion of force and dexterity requirements placed upon individuals and automated equipment, for use in transferring energy between a primary charging source and an electric vehicle or an energy storage device, such as a battery or battery bank; provided, however, that a transfer of energy may also occur by engaging such Unit so that the electric vehicle, battery or battery bank becomes the primary source of energy which transfers electric power through the Unit to an ultimate load.

The display stand assembly for a tablet computer or the like has a support structure and a device-holding assembly secured to the support structure. The device-holding assembly includes a housing having a rear surface and surrounding walls extending therefrom, defining an insert cavity sized larger than the device. At least one replaceable insert is positionable within the insert cavity and defines a device cavity sized to receive the device. A face plate with an optional separate frame is securable to the housing over the insert(s) and device, to secure the device and show the display screen while denying physical access to parts of the device.

A fishing lure assembly is disclosed which comprises a blade free to oscillate, yaw and produce a trailing wake as the fishing lure assembly is displaced through water. A weight is affixed to the fishing lure assembly, but inferiorly disposed such that the blade is free to oscillate and have a yaw divergence which is substantially unaffected by inertia of the weight. The fishing lure may be variably constructed to include one or more hooks and soft bait and hard bait bodies which are disposed to follow behind in the trailing wake. In one embodiment, a float is added to the lure assembly. In another embodiment, a combination of a frame and blade is disclosed, the blade being flexible and resilient and affixed to the frame such that the blade is securably affixed but replaceable in a fishing environment.

The display stand assembly for a tablet computer or the like has a support structure and a device holder assembly secured to the support structure. The device holder assembly includes a housing which defines an insert cavity sized larger than the device. At least one insert is positionable within the insert cavity and defines a device cavity sized to receive the device. A face plate with an optional separate frame is securable to the housing over the insert(s) and device, to secure the device and show the display screen while denying physical access to parts of the device. In one alternative embodiment, at least one mounting plate is provided in the housing, and each insert is positionable in any one of a number of positions on the mounting plate(s), thus permitting standardization of the inserts regardless of the electronic device being used. The insert(s) may include a platform which is adjustable in height to accommodate different device thicknesses.

The present invention involves using one or more statistical classifiers in order to perform task classification on natural language inputs. In another embodiment, the statistical classifiers can be used in conjunction with a rule-based classifier to perform task classification.

A terminal for a Li-ion battery cell utilizes a bimetallic strip formed from the materials used as the Li-ion cell current collectors, such as copper and aluminum. The bimetallic strip is to be used as, at least one, of the Li-ion pouch cell terminals. At least one portion of the bimetallic strip has one of the metallic components removed by such means as chemical or electrochemical etching, mechanical milling, skiving, or grinding, the remaining component being connected to the collector and the other end of the strip serving as the terminal.

Non-invasive spectrophotometric monitoring of oxygen saturation levels based on a combination of continuous wave spectrophotometry (CWS) and phase modulation spectrophotometry (PMS) is described. First information representative of absolute oxygen saturation levels in relatively shallow regions of a patient tissue volume are acquired from PMS-based monitoring thereof during a reference interval. Second information representative of non-absolute oxygen saturation levels in relatively deep regions of the tissue volume are acquired from CWS-based monitoring thereof during the reference interval. Based on the first and second information acquired during the reference interval, a mapping is automatically determined between the second information and estimated absolute oxygen saturation metrics for the relatively deep regions. On a continuing basis during a monitoring interval subsequent to the reference interval, the second information continuously acquired from CWS-based monitoring of the tissue volume are continuously mapped into estimated absolute oxygen saturation metrics, which are continuously displayed on a display output.

This invention relates to a vessel suitable for insertion as a by-pass into new or pre-existing fluid flow paths, such as water lines for swimming pools. The vessel is adapted to receive and contain a wide variety of different types of equipment, which can typically be in the form of a cartridge, and contact the fluid passing through the vessel with the equipment in a way that reduces or minimizes the effect of pressure spikes in the water line, and more efficiently moves the water through the vessel and back into the fluid flow path or conduit. The invention also relates to a method for treating fluids using such a vessel.

A door check device to be mounted to a door for selectively maintaining a gap when door closing is attempted. This prevents injuries to children's fingers and the like. The door check includes a base with a journal having action arm pivoted at its proximal end. The arm has a distal end extending outwardly to engage a doorstop. Indexing sockets are formed along the arm's proximal end. Each socket collaborates with the nose of a spring-biased detent to retain the action arm in a preselected position. The arm may be set in a first position to directly engage the doorstop to form a gap. Set in a second position the arm allows door closing but, upon next opening, the arm automatically reverts to door checking position. In a third position the arm is fully lowered to disable the check device. This device may find application to a variety of closures.

A method for watermarking a sequence of images is provided. The method implements the following steps, for at least one current image: comparing the current image with a preceding image of the sequence, delivering a difference image representing a motion between the preceding image and the current image; if the difference between the current image and the preceding image is above a predetermined threshold, watermarking the current image by inserting a message comprising a field carrying an identifier of the current image and a field carrying a soft hash obtained from at least one portion of the difference image; and if not, watermarking the current image by inserting a message comprising a field carrying an identifier of the current image.

A CATV & MoCA splitter has an input and at least one output that is “CATV & MoCA” and at least one output that is “MoCA only.” The splitter functions as a building block to provide a customizable installation that supplies the needed number of “CATV & MoCA” outputs and the needed number of “MoCA only” outputs. The splitter includes a housing with first, second and third coaxial ports attached to the housing. In one embodiment, the second coaxial port is connected to the first coaxial port via a power divider so that all frequencies presented to the first coaxial port can pass to the second coaxial port, and vice versa. A high pass filter, which passes only MoCA signals, connects the power divider and third coaxial port.

A cartridge for non-lethal applications comprises a posterior portion 1 which extends axially to provide a cylindrical casing. An anterior portion comprises of a nose portion 2 with a centrally located recess 8 for receiving a projectile, and an axially extending piston 3 which is slidably engaged in the chamber defined by the cylindrical casing 1. A posterior primer 4 is located to the end of the posterior portion which is most distal to the nose portion 2. An anterior primer 5 sits just behind the recess 8 of the nose portion 2. A plastic striker is located in the chamber defined by the cylindrical casing 1 and comprises of a sealing flange portion 6 and striking nose portion 7. The striking nose portion 7 locates snugly but slidably in a second chamber provided axially within the piston 3. In use, the posterior primer 4 releases gaseous product which drives the striker 7 against the anterior primer 5 while simultaneously causing telescopic extension of the cartridge which in turn results in recycling of a host firearm.

A delay unit is provided to delay adapting modes of a codec if channel communication conditions are improving. A less robust mode having a higher intrinsic quality is selected only after some delay. The quality of the communication is measured to give quality values for successive measurement occasions. The delay unit comprises a plurality of memory cells in a memory for storing the quality values of the communication conditions of the channel for the most recent measurement occasions. A selector operates according to an algorithm for selecting one of the memory cells. The content of the selected cell is used to set the mode of the codec.

An apparatus for supporting a parachute flight controller from a parachute comprises a bearing member, for example a pulley, a load-bearing coupling, for example a harness, connected to the bearing member and including a connector for connecting the coupling to a parachute flight controller. The coupling includes a load-bearing connector for connecting a payload thereto, and the bearing member is adapted to enable relative movement, controlled by the flight controller, between the bearing member and a support member, for example a flexible coupling line or web for supporting the bearing member connected between first and second suspension lines of a parachute. The flight controller may include one or more control lines connected to the support member or suspension lines which can be wound in or out of the flight controller to effect relative movement between the bearing member and the support member and thereby control the direction of the parachute.

The invention discloses a method and system for extracting image fingerprints based on a representative local mode, and relates to the field of image processing. The method comprises: performing image attack analog processing of database images to generate new database images; extracting key points of the database images and the new database images; obtaining local blocks according to the key points; generating local modes and establishing a local mode database according to the local blocks; obtaining the representative local mode from the local mode database; establishing image fingerprints of the database images and the new database images according to the representative local mode; storing the image fingerprints into an image fingerprint database; obtaining a new image and extracting fingerprints of the new image; comparing the fingerprints of the new image with the image fingerprints in the image fingerprint database; and searching an image corresponding to the new image in the database images. According to the invention, the required memory is small; accelerated matching is performed by using an optimized machine instruction; the method and system are suitable for massive image copying and detection.

A method for reducing incidents of data loss in RAIDs of differing RAID levels is disclosed. Such a method identifies, in a data storage environment, first and second sets of RAIDs. The first set contains RAIDs providing more robust data protection (e.g., RAID-6 arrays), and the second set contains RAIDs providing less robust data protection (e.g., RAID-5 arrays). The method identifies, in the data storage environment, higher risk storage drives having a failure risk above a threshold and lower risk storage drives having a failure risk below the threshold. The method swaps higher risk storage drives from RAIDs of the second set with lower risk storage drives from RAIDs of the first set. In certain embodiments, the swapping may be performed such that no RAID of the second set includes more than a selected number of higher risk storage drives. A corresponding system and computer program product are also disclosed.