摘要:
A write head for perpendicular magnetic recording having a write pole and first and second return poles. The write head can include a first magnetomotive force source for delivering a magnetomotive force to the first return pole and the write pole and a second magnetomotive force source for delivering magnetomotive force to the second return pole and the write pole. The first and second magnetomotive force sources can be operated independently of one another so that different relative amounts of magnetomotive force can be applied to the first and second return poles. A trailing magnetic shield can be connected with one of the return poles, such as the second return poles, and the variation in magnetomotive force can be used to increase the amount of flux flowing through the trailing shield when increased field gradient is desired (such as when writing a transition), and to decrease the amount of flux through the trailing shield when decreased field gradient and increased write field are desired (such as when writing a long magnetic section on a magnetic medium).
摘要:
A sensor interface is provided with a number of sensor inputs and a number of client inputs. The client inputs are configured to receive a number of data requests from a number of clients. The number of data requests include at least one data request that specifies a particular type of data to be returned, without identifying a particular physical sensor to be used in acquiring the particular type of data. A processor is configured to i) determine what sensor data can be used to satisfy the number of data requests, ii) configure ones of the sensor inputs to receive sensor data from a number of physical sensors, and iii) if possible, satisfy the number of data requests using the received sensor data. Methods and apparatus pertaining to such a sensor interface are also disclosed.
摘要:
Various embodiments of the present invention provide systems and methods for a multi-tier data processing system. For example, a data processing system is disclosed that includes an input operable to receive data to be processed, a first data processor operable to process at least some of the data, a second data processor operable to process a portion of the data not processed by the first data processor, wherein the first data processor has a higher throughput than the second data processor, and an output operable to yield processed data from the first data processor and the second data processor.
摘要:
An apparatus and method for controlling inflation pressure and pressurization rate of a balloon during deployment of a stent or scaffold is disclosed.
摘要:
Techniques are provided for identifying the servo sectors in a track on a data storage device. A data storage device identifies the servo sectors in a track by reading distributed index bits from multiple servo sectors in a track. The data storage device analyzes only one index bit from each servo sector to identify the index of a track. In some embodiments, the index of a track can be identified after examining the index bits stored in a particular number of consecutive servo sectors, even in the presence of errors. The index bits in each track can have an error tolerance with a minimum Hamming distance greater than one. In other embodiments, a data storage device compares a sliding window of the index bits read from the servo sectors to all possible N-bit vectors that exist within a pattern of the index bits stored on a track.
摘要:
The present disclosure describes a method and apparatus for guide catheterization. In one embodiment, a guiding catheter system includes a flexible shaft having a distal end shaped for accessing a target vessel. A handle assembly is movably coupled to the flexible shaft. The flexible shaft is selectably movable between a plurality of discrete positions of a first degree-of-freedom defined relative to the flexible shaft. The flexible shaft restrained in the first degree-of-freedom at each position of the plurality of discrete positions. The flexible shaft movable through a predetermined displacement of a second degree-of-freedom defined relative to the flexible shaft at each position of the plurality of discrete positions. Motion of the flexible shaft relative to the handle assembly results in a controllable sweeping motion at the distal end of the flexible shaft.
摘要:
WORM safeguards are provided in a magnetic disk drive in which the disks are pre-magnetized or pre-recorded such that all magnetic domains on each recording surface are completely aligned pointing in the same direction. A special write head which can magnetically write only in the direction opposite to the pre-magnetization orientation is also provided.
摘要:
A system (130) improves network management. The system (130) associates an event in the network with a network device and provides a geographical map (710). The geographical map (710) displays locations of network devices and indicates which network devices are associated with at least one event.
摘要:
A chipset in a host computer enables the internal HDD of the host computer to be accessed by another computer either through the USB port (for direct access shared storage) or the Ethernet port (for network attached storage) without having to boot the host computer.