摘要:
A method for attaching an integrated circuit component to a printed circuit board by a plurality of solder bump interconnections utilizes a printed circuit board comprising a solder-plated circuit trace. The trace includes terminals, each including a terminal pad and a runner section. A solder plate formed of a first solder alloy is applied to the terminal to extend continuously between the pad and the runner section. Solder bumps are affixed to the component and are formed of second compositionally distinct solder alloy having a melting temperature greater than the first alloy. The component and board are then assembled so that the bumps rest against the solder-plated terminal pads, and heated to a temperature effective to melt the solder plate but not the bump alloy. Upon cooling to resolidify the solder, the solder plate is fused to the bumps to form the interconnections.
摘要:
A method for providing optimized data representation of relations for in-memory database query processing is disclosed. The method seeks to optimize the use of the available memory by encoding relations on which the in-memory database query processing is performed and by employing auxiliary structures to maintain performance. Relations are encoded based on data patterns in one or more attribute-columns of the relation and the encoding that is selected is suited to a particular type of data in the column. Members of a set of auxiliary structures are selected based on the benefit the structure can provide and the cost of the structure in terms of the amount of memory used. Encoding of the relations is performed in real-time while query processing occurs, using locks to eliminate conflicts between the query processing and encoding.
摘要:
A device for securing ladders to a vehicle having telescoping cross bar having pivotal arms pivotally attached at each end of the telescoping cross bar, respectively, the telescoping crossbar having a receiving portion and an insertion portion, the insertion portion and receiving portion sized such that there is a close fit when inserting the insertion portion into the receiving portion, each pivotable arm has an arm body that includes a pivot arm aperture, at each distal end of the insertion portion and receiving portion are at least one pivot tang, also located at each distal end of the insertion portion and receiving portion is a ladder insertion tang, the ladder insertion tangs are attached to projecting tabs on the distal ends and are inwardly directed, and the receiving portion includes a movement limiting mechanism.
摘要:
A method for providing optimized data representation of relations for in-memory database query processing is disclosed. The method seeks to optimize the use of the available memory by encoding relations on which the in-memory database query processing is performed and by employing auxiliary structures to maintain performance. Relations are encoded based on data patterns in one or more attribute-columns of the relation and the encoding that is selected is suited to a particular type of data in the column. Members of a set of auxiliary structures are selected based on the benefit the structure can provide and the cost of the structure in terms of the amount of memory used. Encoding of the relations is performed in real-time while query processing occurs, using locks to eliminate conflicts between the query processing and encoding.
摘要:
Described herein is an apparatus for dynamically adjusting a voltage reference level for optimizing an I/O system to achieve a certain performance metric. The apparatus comprises: a voltage reference generator to generate a voltage reference; and a dynamic voltage reference control unit, coupled with the voltage reference generator, to dynamically adjust a level of the voltage reference in response to an event. The apparatus is used to perform the method comprising: generating a voltage reference for an input/output (I/O) system; determining a worst case voltage level of the voltage reference; dynamically adjusting, via a dynamic voltage reference control unit, the voltage reference level based on determining the worst case voltage level; and computing a center of an asymmetrical eye based on the dynamically adjusted voltage reference level.
摘要:
A kit for securing ladders to a vehicle comprising at least two units, each unit comprising a body with a pivotally attached arm unit, wherein each unit is adapted to be secured to a portion of a ladder. Each arm unit comprises an arm body, with a pivot aperture, and two attached arms. The included angle between the two attached arms is 120°. A method for securing ladders to a vehicle comprising the steps of: providing two units, each unit comprising a body with a pivotally attached arm unit; attaching the two units to opposite sides of a ladder; placing the ladder in the bed of a pick-up such that the pivotally attached arm units are in contact with the cab of the pick-up; and securing the ladder to the pick-up to prevent unwanted movement.
摘要:
Each data storage device that supports the standard security features and is enabled with a security password may be locked when power is removed from the device. When power is returned, a determination is made as to whether the data storage device is locked and returning from a powered off state or a hardware reset. If locked, a password may be received from a user. After the security password is received, the data storage device is unlocked, allowing access to the data on the device. A setup utility is provided for manipulating the security and backup passwords for each device. Other features include: presenting locked devices to the operating system, the use of a backup password to unlock a device in lieu of the security password, requiring or not requiring password entry from a user to unlock a device when returning from a sleep state, setting maximum or high security, an automatic hardware reset upon exiting the setup utility, and disabling change password capabilities for devices without an enabled security password.
摘要:
A cab protection unit comprising a main frame pivotally attached to a load bearing frame; the main frame comprising a cross bar with to arms attached at each end of the cross bar; a yieldable structure attached to a bottom side of the main frame; and at least one support arm pivotally attached to at least one of the arms and configured to secure the load bearing frame into an open position; and the load bearing frame comprising a body having at least two load retention arms attached to one side of the body.
摘要:
This single piece device (the “Splunger”) performs the function of a toilet plunger and a toilet scrubber. It can be used to clean a toilet and clear a plugged toilet. However, the unplugging mechanism is different from toilet plungers currently in use. The later uses air to push the plug out of the way. The Splunger primarily uses water pressure to clear the plug. The Splunger is of simple design and consists of a handle affixed to a specially shaped porous sponge or spongy material. The handle made of durable material that is either rigid or slightly flexible, and is slightly flanged at the sponge end to permit strong adhesion to the sponge and prevent rips. The end of the sponge nearest the water is slightly cupped to enable cupping of water so that a downward thrust of the device will increase water pressure and push the plug down the drain. Sponge is made of strong, durable and porous material to allow for scrubbing, quick drainage and low water retention. The sides of the sponge flare out from the water end of the sponge and are tapered with the outer edge wavy or toothed to permit better scrubbing of the sides of the toilet and up under the rim. The flared sides fold back when the Splunger is pushed down the toilet drain, permitting a tight fit without losing freedom of movement.