Abstract: A portable linear fastener driving tool is provided that drive staples, nails, or other linearly driven fasteners. The tool uses a gas spring principle, in which a cylinder filled with compressed gas is used to quickly force a piston through a driving stroke movement, while a driver also drives a fastener into a workpiece. The piston/driver is then moved back to its starting position by use of a rotary-to-linear lifter, and the piston again compresses the gas above the piston, thereby preparing the tool for another driving stroke. The driver has protrusions along its edges that contact the lifter, which lifts the driver during a return stroke. A pivotable latch is controlled to move into either an interfering position or a non-interfering position with respect to the driver protrusions, and acts as a safety device, by preventing the driver from making a full driving stroke at an improper time.

Abstract: The present invention is a method for the allocation of data on physical media by a file system that eliminates duplicate data. Efficient searches are employed using a unique algorithm when a compare on hash is used to achieve realtime operation of the file system. The in memory feature of the invention allows the search to be performed in constant time. Also, the on disk representation of search structures enables the present invention to maintain these critical search structures in a highly efficient, self-consistent and resilient manner.

Abstract: The present invention provides a method for the allocation of data on physical media by a file system which optimizes power consumption. The present invention improves power efficiency of computing devices using file systems by allocating data in a way that allows devices to power down when they are not in use. This is carried out by using an allocation group method to divide the storage system into groups of one or more disk drives. The allocator fills the first group entirely before moving to the second group. The allocator globally allocates blocks within each group. Groups are typically sized to meet the average I/O bandwidth requirement of the application. The method also dynamically increases the number of active allocation groups based on I/O load. This is done by computing the average number of write requests per time period.

Abstract: The present invention is a method for the allocation of data on physical media by a file system that eliminates duplicate data. Efficient searches are employed using a unique algorithm when a compare on hash is used to achieve realtime operation of the file system. The in memory feature of the invention allows the search to be performed in constant time. Also, the on disk representation of search structures enables the present invention to maintain these critical search structures in a highly efficient, self-consistent and resilient manner.

Abstract: The present invention provides a method for the allocation of data on physical media by a file system which optimizes power consumption. The present invention improves power efficiency of computing devices using file systems by allocating data in a way that allows devices to power down when they are not in use. This is carried out by using an allocation group method to divide the storage system into groups of one or more disk drives. The allocator fills the first group entirely before moving to the second group. The allocator globally allocates blocks within each group. Groups are typically sized to meet the average I/O bandwidth requirement of the application. The method also dynamically increases the number of active allocation groups based on I/O load. This is done by computing the average number of write requests per time period.

Abstract: An archive system is provided for long term storage of large amounts of data that is particularly suited for multi-year storage of medical data such as cardiac images, patient demographics and reports. One or more digital versatile disks (DVDs) may be employed as the storage media. In the archival process, all of the data for a particular patient, procedure or study is stored and uniquely identified within one DVD. Each DVD may have an executable program stored thereon for independently accessing the archived data from the selected DVD. Before the DVD is recorded, the data to be archived is segmented into a plurality of information groups where each group is based on data for the particular patient, procedure or study. Then, the DVD is reviewed to determine whether a sufficient amount of storage space is present to ensure that the information group will be entirely stored within one DVD.

Abstract: An archive system is provided for long term storage of large amounts of data that is particularly suited for multi-year storage of medical data such as cardiac images, patient demographics and reports. One or more digital versatile disks (DVDs) may be employed as the storage media. In the archival process, all of the data for a particular patient, procedure or study is stored and uniquely identified within one DVD. Each DVD may have an executable program stored thereon for independently accessing the archived data from the selected DVD. Before the DVD is recorded, the data to be archived is segmented into a plurality of information groups where each group is based on data for the particular patient, procedure or study. Then, the DVD is reviewed to determine whether a sufficient amount of storage space is present to ensure that the information group will be entirely stored within one DVD.