295results about How to "Short transition time" patented technology

A switched regulator circuit provides step-up and step-down operation in which the level of the input voltage can be greater, equal to, or less than a preset controlled output voltage. A four switch arrangement or two switch arrangement provides buck, boost, and buck-boost regulation under variable frequency valley-peak current mode control. A single sense resistor may be utilized for sensing inductor current during each duty cycle.

A robotic data storage library is disclosed that is capable of operating with at least one data storage element and with the ability to reduce the transition time to reach an operational state after a transition of the library from a power-off state to a power-on state. Methods for reducing the transition time to reach an operational state of a robotic data storage library after a transition of the library from a power-off state to a power-on state are also disclosed. One embodiment of a robotic data storage library with the ability to reduce the transition time to reach an operational state after a transition of the library from a power-off state to a power-on state comprises: (1) a plurality of storage locations, each capable of holding at least one data storage element; (2) a data transfer interface for receiving a data storage element and establishing a communication path with a data storage element so that data can be transferred between the data storage element and a host computer; (3) a transport unit for moving a data storage element between one of the plurality of storage locations and the data transfer interface; (4) a nonvolatile memory for storing an inventory of locations of the robotic data storage library; and (5) a controller for causing an audit to be performed to create an inventory, causing the inventory to be stored in the nonvolatile memory prior to a transition of the robotic data storage library from a power-off state to a power-on state, and causing the inventory to be transmitted to a host computer after the transition of the robotic data storage library from a power-off state to a power-on state.

Apparatus for insufflating a body conduit or cavity includes a needle having a lumen defined by an inner surface and a sharp distal tip. An obturator, disposed within the lumen of the needle and movable axially between a proximal position and a distal position, includes an extension member which defines an insufflation channel with the inner surface of the needle. A blunt distal terminus on the extension member is disposed distally of the sharp tip of the needle when the obturator is in the distal position.

Significantly faster state transitioning time between the optimal optical density for viewing 2D Movies as 3D movies through Continuous Adjustable 3Deeps Filter Spectacles can be achieved by using multiple layers (multi-layer) of electronically controlled variable tint materials to fabricate the right and left lenses of the 3Deeps spectacles. The use of multi-layered lenses may result in as much as a 50% decrease in transition time between states. The invention also relates to Multi-Use Electronically Controlled Continuous Adjustable 3Deeps Filter Spectacles that house within a single spectacle frame several layers of optoelectronic material in which each layer of electronically controlled relates to a different method of viewing.

A switched regulator circuit provides step-up and step-down operation in which the level of the input voltage can be greater, equal to, or less than a preset controlled output voltage. A four switch arrangement or two switch arrangement provides buck, boost, and buck-boost regulation under constant frequency valley-peak current mode control. A single sense resistor may be utilized for sensing inductor current during only a short period during each duty cycle. As an alternative to the sense resistor, the switches themselves can be used to sense current during operation.

Information handling system power management in standby and hibernate states is adapted to reduce transition times for end user requests to resume to an operational state. During fast resume time periods, transitions to the hibernate state are limited so that recovery to an operational states has the reduced resume time associated with the standby state. The fast resume time periods are set by user preference or automatically set by monitoring end user interactions with the information handling system to predict fast resume times appropriate for the end user. In one embodiment, a power manager automatically transitions the information handling system from the hibernate state to a standby state a predetermined time period before a fast resume period begins.

The invention relates to a retarder for cement paste used in petroleum drilling, completion or well cementing operation, which comprises two components. The two components are a multipolymer containing carboxylic acid groups accounting for 60 to 90 portions by weight and an organic phosphonic acid and salts thereof accounting for 10 to 40 portions by weight. The average relative molecular mass of the multipolymer containing carboxylic acid groups is 2,000 to 20,000. The applicable temperature scope of the cement retarder is wide, and the cement retarder can be applied at high temperature, medium and low temperatures. The applicable temperature scope ranges from 30 DEG C to 230 DEG C. The cement retarder can be matched with various additives and is very compatible, which is applicable for oil well cement of various grades. The retarder can resist salt well, which is applicable for fresh water, brine, seawater, concentrated water and so on. The retarder can be widely applied in various shallow holes, moderate-depth holes, deep holes and superdeep holes. An excess amount of retarder is not sensitive in brine and seawater; the construction safety is ensured; the retarder does not adversely affect the strength development of cement.

The disclosed method for controlling terminal reading system message comprises: when the system message changes, the NS sends indication including the changed scheduling message to the activated terminal; the terminal receives the indication message to read the latest system message. This invention enables the UE activated by OFDM technology to obtain system message in a LTE system normally, and improves system access performance.

The invention relates to enhanced heat transfer surfaces and methods and tools for making enhanced heat transfer surface. Certain embodiments include a boiling surface that include a plurality of primary grooves, protrusions and secondary grooves to form boiling cavities. The boiling surface may be formed by using a tool for cutting the inner surface of a tube. The tool has a tool axis and at least one tip with a cutting edge and a lifting edge. Methods for making a boiling surface are also disclosed, including cutting through the inner surface of a tube to form primary grooves, then cutting and lifting the inner surface to form protrusions and secondary grooves.

The invention discloses a control system of a high frequency switching power supply for a Cz silicon single crystal furnace and a control method. The control method includes the steps of combining self-adaptive fuzzy control and sliding mode variable structure control, and aiming at a high-frequency switch heating electric power for the Cz silicon single crystal furnace to design a power controller based on a self-adaptive fuzzy control and sliding mode variable structure control method. The control system of the high frequency switching power supply for the Cz silicon single crystal furnace and the control method play respective advantages of fuzzy control and sliding mode variable structure control, further improve dynamic performance of the system, have good robustness for input voltage or load disturbance, and relieve or avoid vibration which generally happens to a sliding mode.

An enhancement mode JFET as a switching device in a buck-boost converter circuit combined with a single rectifier diode and an inductor. A control circuit coupled to the gate of the JFET switches the JFET between a current conducting state and a current blocking state. The ratio of converter output voltage to converter input voltage is determined by the ratio of JFET current blocking time to the sum of JFET conduction time and JFET blocking time. This pulse width modulation scheme is thus used to adjust the dc output voltage level.

A valve actuator for actuating a valve in an internal combustion engine is disclosed, wherein the valve actuator includes at least one electromagnet having a coil wound about a core, at least one permanent magnet disposed at least partially within the core, and an actuating member disposed adjacent to the electromagnet, wherein the actuating member is coupled to a pivot and is configured to be pivotally moved by activation of the electromagnet to effect at least one of an opening and a closing of the valve.

The invention discloses an interior point algorithm based LPV (Linear Parameter Varying) model nonlinear predicating control method. The method comprises the steps of linearizing a complex mechanism model of a system at a set working point to obtain a plurality of linear sub-models; selecting weight functions; weighting each linear sub-model to obtain a global approximation model of the system, namely, PLV model; treating the LPV model as the predicating model and selecting the secondary performance index function to create a nonlinear predicating control topic; solving the optimal topic by the interior point algorithm during rolling optimizing so as to obtain the optimal control sequence for achieving the nonlinear predication control. Compared with the prior art, the method has the advantages that the LPV-based full-simultaneous direct solving is performed, so that the solving precision is high, and the algorithm needs a little time; the control effect is obvious; the transition process of the system is reduced; the resource consumption is reduced; the control quality of the system is particularly obviously improved under a large variable working condition range.

The present invention provides a synchronizer for receiving an incoming data signal of a first clock domain and for outputting a data signal of a second clock domain. The synchronizer comprises an input stage, a master latch, a transfer stage and a slave latch. The input stage receives the data signal of the first clock domain and outputs the data signal to the master latch when the input stage is clocked with a master clock signal. The master latch stores the data signal at a storage node of the master latch. The master latch has a resolve time associated with it during which the master latch seeks to resolve the data signal to a logic 0 or a logic 1. The transfer stage transfers the data signal stored in the master latch to the slave latch when the transfer stage is clocked with a slave clock signal.