| Patent Number |
Title Of Patent |
Date Issued |
| 7625134 |
Optical connector, a communication system and a method of connecting a user circuit to an optica |
December 1, 2009 |
| The invention provides an optical connector for connecting a user circuit to an optical backplane, in use the connector being adapted for mounting on a user circuit. The connector comprises an active or passive photonic interface through which optical signals may be transmitted and recei |
| 7612996 |
Temperature control device, disk drive unit test apparatus, and a method of testing or operating |
November 3, 2009 |
| The invention provides a temperature control device for a disk drive unit, the temperature control device includes a housing for connection to a carrier for a disk drive unit; an air flow generator arranged in the housing for providing a flow of air to a disk drive unit in a connected |
| 7555595 |
Methods and apparatus for writing servo frames to and/or verifying data areas of a storage mediu |
June 30, 2009 |
| Methods and apparatus are disclosed for writing and verifying servo frames written on a storage medium, for verifying data areas of a storage medium, and for writing and verifying servo frames and data areas of a storage medium. In one example, the writing of at least a portion of a |
| 7554811 |
Data storage device carrier and carrier tray |
June 30, 2009 |
| Various arrangements of carrier trays and carriers for data storage devices, such as disk drives, are disclosed. The arrangements of carrier trays and carriers are arranged to be rigid, and therefore more resistant to vibration arising from operation of the data storage device in the |
| 7520047 |
Method and apparatus for loading a read/write head to a spinstand |
April 21, 2009 |
| Apparatus for loading a read/write head to a spinstand has a load area for receiving at least one head to be tested. The apparatus further has a first station having a coarse precisor arranged to provide a coarse positioning of the head. A first automation device is arranged to pick a |
| 7490993 |
Adapter for an optical printed circuit board, an optical printed circuit board and a method of c |
February 17, 2009 |
| The invention provides an adapter for an optical printed circuit board, the adapter comprising a socket for receiving a daughter card for connecting to a said optical printed circuit board; and a connector for engagement with the optical printed circuit board arranged such that when |
| 7454097 |
Optical circuit board, an optical backplane and an optical communication system |
November 18, 2008 |
| The invention provides an optical circuit board, the circuit board comprising: a rigid support layer; a flexible support layer formed on the rigid support layer; and, an optical layer formed on the flexible support layer. The optical layer includes one or more optical waveguides exte |
| 7447011 |
Data storage device carrier and carrier tray |
November 4, 2008 |
| Various arrangements of carrier trays and carriers for data storage devices, such as disk drives, are disclosed. The carrier trays and carriers have air flow holes that are carefully arranged to promote good air flow across the data storage devices. In one example, the air holes in a |
| 7436761 |
Apparatus and method for connecting fibre channel devices via bypass buffers |
October 14, 2008 |
| Apparatus is disclosed for connecting at least a first Fibre Channel device to at least a second Fibre Channel device. The apparatus includes ports, buffers and bypass buffers that are arranged so that the second Fibre Channel device can operate at a physical link rate that is higher |
| 7422374 |
Optical printed circuit board blank, a kit and a method of making an optical printed circuit boa |
September 9, 2008 |
| The present invention provides an optical printed circuit board blank, comprising, a support layer; one or more optical waveguides formed thereon; and at least one socket for receiving an optical component, the socket including one or more alignment features to ensure alignment of an |
| 7411946 |
Network monitor and method |
August 12, 2008 |
| A network monitor that taps data from a network link has first and second interfaces that allow the network monitor to be connected in-line in the network link between two network devices. The monitor has first and second programmable logic devices. The programmable logic devices are |
| 7392333 |
Fibre channel environment supporting serial ATA devices |
June 24, 2008 |
| A system and method in a fibre channel environment supporting serial ATA devices. In one embodiment, the system and method includes a network having a plurality of servers and a plurality of fiber-channel devices connected to each other through the network. In another embodiment, a c |
| 7342780 |
Data storage device carrier and method |
March 11, 2008 |
| In one aspect, a carrier (10) for a data storage device has a base (22) and side walls (23,24) upstanding from the base (22). A runner (25) is provided on at least one side wall (23,24) for sliding engagement with a runner (12) of a chassis (1) in which the carrier (10) is in use mounted |
| 7330277 |
Resonant ellipsometer and method for determining ellipsometric parameters of a surface |
February 12, 2008 |
| A resonant ellipsometer and method for determining ellipsometric parameters of a surface provide an efficient and low-cost mechanism for performing ellipsometric measurements. A surface of interest is included as a reflection point of a resonance optical path within a resonator. The |
| 7307836 |
Data storage device carrier and chassis |
December 11, 2007 |
| In one aspect, a data storage device carrier (10) has a bay in which a data storage device can be received. A light pipe (11) is provided for conveying light from one end of the carrier (10) to the other. A diffuser (16) is located near to but spaced from said other end of the light pipe |
| 7298624 |
Data storage device chassis, case and clamp mechanism |
November 20, 2007 |
| A data storage device chassis for housing a plurality of data storage devices has a plurality of walls at least some of which have at least one guide strip along at least part of the length of the wall to define a plurality of bays in which data storage devices (18) can be housed. The |
| 7294825 |
Fabry-perot resonator apparatus and method including an in-resonator polarizing element |
November 13, 2007 |
| A Fabry-Perot resonator apparatus and method including an in-resonator polarizing element improves detection/measurement sensitivity of an optical system, provides both fields at a single end of the resonator, and overcomes other structural and performance limitations of particular o |
| 7282729 |
Fabry-Perot resonator apparatus and method for observing low reflectivity surfaces |
October 16, 2007 |
| A Fabry-Perot resonator apparatus and method for observing low reflectivity surfaces provides functional improvements for optical inspection and measurement systems, optical storage and retrieval systems as well as other optical systems when the a surface of interest in the resonator |
| 7220955 |
Three-dimensional imaging resonator and method therefor |
May 22, 2007 |
| A three-dimensional imaging resonator and method therefor provides improved surface height measurement capability in optical measuring systems. A resonator including a surface of interest in a resonant image path is coupled to an external multi-pixel detector that detects an image of |
| 7214932 |
Resonator method and system for distinguishing characteristics of surface features or contaminan |
May 8, 2007 |
| A resonator method and system for distinguishing characteristics of surface features or contaminants provides improved inspection or surface feature detection capability in scanning optical systems. A resonator including a surface of interest in the resonant path is coupled to a dete |
| 7203060 |
Disk drive support assembly, clamp assembly and disk drive carrier |
April 10, 2007 |
| A disk drive support assembly has a clamp arrangement for releasably clamping a disk drive to a massive block. The clamp arrangement may be an inflatable actuator that is operable to clamp the disk drive to the block via a disk drive carrier. Various clamp assemblies for clamping a disk |
| 7164579 |
Mounting device for a disk drive unit, releasable fastener and method of testing a disk drive un |
January 16, 2007 |
| A disk drive unit mounting device is adapted to carry one or plural disk drive units. The mounting device includes a temperature control module and a carrier module secured together y a releasable fastener device so that the temperature control module controls the temperature of the disk |
| 7137122 |
Methods and apparatus for regulating process state control messages |
November 14, 2006 |
| In a data processing system, the flow of messages specifying the states of various processes in the system, is regulated using a first register which maintains a list of the current states of each process, and a queue. Whenever a process state message relating to a particular process |
| 7099355 |
Distributed hierarchical scheduling and arbitration for bandwidth allocation |
August 29, 2006 |
| According to the present invention there is provided a scheduling and arbitration process for use in a digital data switching arrangement of the type in which a central switch under the direction of a master control provides the cross-connections between a number of high-bandwidth po |
| 7088710 |
Method of transmitting information through data switching apparatus and apparatus therefor |
August 8, 2006 |
| A data switch for handling packets of information; the switch includes input traffic managers, ingress routers, a memoryless cyclic switch fabric, egress routers and output traffic managers all acting under the control of a switch controller. Each ingress router includes a set of vir |
| 7088541 |
Mounting for disk drive unit and method of handling |
August 8, 2006 |
| A mounting for a disk drive unit includes a carrier for carrying a disk drive unit during required movement of the disk drive unit. The carrier defines a space into which the disk drive unit can be inserted, and the carrier is adapted to be inserted with the disk drive unit into a re |
| 7054150 |
Mounting for disk drive unit and method of handling |
May 30, 2006 |
| A mounting for a disk drive unit includes a carrier for carrying a disk drive unit during required movement of the disk drive unit. The carrier defines a space into which the disk drive unit can be inserted, and the carrier is adapted to be inserted with the disk drive unit into a re |
| 7050448 |
Data switching arbitration arrangements |
May 23, 2006 |
| There is disclosed a masking unit (REQMSK) for use in a data packet switching system. The data switching system being of the type having a memoryless cross-back switch (SM) providing cyclic connections under the control of a switch arbiter (SCARB) between ingress routers (IR0, IR1, I |
| 7022978 |
Method and apparatus including in-resonator imaging lens for improving resolution of a resonator |
April 4, 2006 |
| A method and apparatus including in-resonator imaging lens for improving resolution of a resonator-enhanced optical system provides resolution improvements for optical inspection and measurement systems, optical storage and retrieval systems as well as other optical systems. An imagi |
| 7016350 |
Data switch and a method for controlling the data switch |
March 21, 2006 |
| A data switch is proposed of the type having virtual queue ingress routers interconnected with egress routers by way of a memoryless switching matrix controlled by a control unit which performs an arbitration process to schedule connections across the switch. This scheduling is performed |
| 7006580 |
Method for controlling a data transmission pre-emphasis unit and a data transmission system empl |
February 28, 2006 |
| In a pre-emphasis unit device which transmits signals along a transmission line with a frequency-dependent pre-emphasis, the frequency response of the pre-emphasis unit is varied to match characteristics of the transmission line. Initially the pre-emphasis unit is set to transmit pul |
| 7002981 |
Method and arbitration unit for digital switch |
February 21, 2006 |
| In a data switching system, the ingress and egress ports of a memoryless cross-bar switch are controlled by an arbitration method. The arbitration method uses a three phase process involving (i) a request phase in which each ingress port sends its connection requests to egress ports to w |
| 6970469 |
Scheduling means for data switching apparatus |
November 29, 2005 |
| A scheduling means for data switching apparatus includes a plurality of input ports and a plurality of output ports, the scheduling means capable of processing a plurality of interconnection requests, each requesting interconnection between a sub-set of the input ports and a sub-set of |
| 6927864 |
Method and system for determining dimensions of optically recognizable features |
August 9, 2005 |
| A method and system for determining dimensions of optically recognizable features provides a low-cost and efficient high speed/high resolution measurement system for determining surface feature dimensions. Multiple imaging subsystems are arranged at predetermined differing angles above a |
| 6904473 |
Direct memory access controller and method of filtering data during data transfer from a source |
June 7, 2005 |
| A direct memory access controller includes a source memory controller for controlling a source memory, a destination bus controller for controlling the transfer of data to a destination memory, a first-in-first-out memory buffer for receiving data from the source memory, and a filter con |
| 6892287 |
Frame reassembly in an ATM network analyzer |
May 10, 2005 |
| A method and system for partial reassembly of data frames reconstructed from data cells received from a network data stream includes partially reassembling the header cells and the last cell of each frame and passing the remainder of data frame cells to a capture buffer in an unassembled |
| 6826046 |
Disk drive unit |
November 30, 2004 |
| A disk drive unit carrier (1) is adapted to carry a single disk drive unit (2). The carrier (1) includes a temperature control device (4) for controlling the temperature of the disk drive unit (2). The temperature control device (4) is preferably in the form of an air flow control device |
| 6822965 |
Approximate state control mechanism |
November 23, 2004 |
| A data packet switching system having a central controller and a number of peripheral controllers each incorporating at least one queue for storing packets of information received from a peripheral data packet source. Each queue in each peripheral controller includes a queue size detecti |
| 6791990 |
Priority selection means for data transmission apparatus |
September 14, 2004 |
| A priority selector includes buffers receiving control information relating to data to be transmitted through a data switching apparatus (each buffer is arranged to store control information having a respective one of a predetermined number of priority levels and arranged to deliver an |
| 6714369 |
Method and apparatus for writing clock data to a storage medium |
March 30, 2004 |
| A first clock track is written to a data storage region of a storage medium at a first position between first and second boundaries. A first set of further clock tracks is written to other positions on the data storage region, these other positions lying between the first position and th |
| 6704365 |
Data transmission driver device |
March 9, 2004 |
| A driver transmits data as a difference in the currents along two transmission lines. The driver provides a difference in the currents which is greater for relatively high frequency components, by transmitting relatively low frequency components in the data to both of the transmissio |
| 6674602 |
Method and apparatus for writing clock data to a storage medium |
January 6, 2004 |
| In a method of writing clock data to a storage medium whilst the storage medium is rotating, a burst of clock data is read from a present track. A burst of clock data for a subsequent track on the storage medium is generated in accordance with the burst of clock data read from the presen |
| 6674593 |
Method and apparatus for writing a servo track to a storage medium |
January 6, 2004 |
| A clocking method and apparatus for a rotating storage medium uses a single reference frequency from which both the pattern frequency of a servo pattern signal and the rotational frequency of the storage medium are derived. During the servo track writing process, a clock track is read |
| 6622202 |
Method and device for operating a RAM memory |
September 16, 2003 |
| A method of operating a RAM memory having a plurality of memory addresses for storing data, the method being performed with a timing based on clock signals spaced by clock periods and comprising the steps of: receiving an address and a function signal specifying a function to be performe |
| 6608829 |
Closed-loop synchronization arrangement for data transmission system |
August 19, 2003 |
| A synchronizing arrangement for a closed-loop data transmission system includes a central data switch and a plurality of transceivers which may be interconnected by way of the switch for the transmission of data between them. The central data switch includes a clock generator, and a |
| 6498407 |
Low speed moving magnet motor having a high inertia rotor |
December 24, 2002 |
| A low speed moving magnet motor (1) has a moving magnet (10) and a stationary coil (20) for carrying an electric current and disposed in relation to the moving magnet (10) such that a magnetic field generated when a current flows through the coil (20) causes the moving magnet (10) to |
