Abstract: A motor having reduced deformation due to a temperature change. The motor is an outer ring type motor having a bearing cartridge, which integrates the shaft, ball bearings and sleeve. The outer periphery of the sleeve is attached to the inner periphery of the hub at a bonding region positioned axially between the ball bearing holding portions. The bonding portion includes a stress reducing region. The diameter of the hub within the stress reducing region is not uniform in order to reduce the stress generated between the outer periphery of the sleeve and the inner periphery of the hub due to thermal expansion.

Abstract: A spindle motor assembly having a shaft with an integral heat pipe. The shaft with the integral heat pipe improves the thermal conductivity of the shaft and the spindle motor assembly. The shaft includes an elongated portion and a sealing structure. For one embodiment, the sealing structure includes a cap and a gasket that are joined to the shaft by a brazing process.

Abstract: An accurate and time-efficient method and system for self-servowriting wherein at least one reference value used to position the transducer is updated for some, but not all, of the tracks to be written. The reference value(s) is dependent upon a predefined indicium of transducer position, such as the amplitude of the readback signal obtained from a written track when the transducer is positioned on the track. In a first embodiment, updating of the reference value(s) is performed at every Nth track written, where N is a fixed number or range of numbers determined by an expected track-to-track variation of the indicium. The servowriting system may be designed to dynamically increase or decrease N during servowriting in response to actual variations in the indicium. According to a second embodiment, updating is only performed when needed, e.g. when the variation of the measured indicium between two written tracks (not necessarily adjacent tracks) exceeds a predefined threshold value.

Abstract: A system, method, and program for controlling a manufacturing process is described. A highest priority work item having a ready status for a processing step is retrieved from one or more relational database tables. The processing step is performed by either a processing device or by a work flow management system having one or more work managers. Upon completion of the processing step, the status of the work item in the one or more relational database tables is updated to a completed status of the processing step. The completed status of the processing step represents a ready status for a new processing step. For one embodiment of the present invention, the manufacturing process is a production printing and mailing operation that performs a plurality of processing steps on a mail piece. As the mail piece is processed, it is transformed from a print file to printed media in an envelope ready for mailing.

Abstract: A hard disk drive (HDD) having a control unit that reduces the number of control signals required to control the operation of the channel and amplifier. The HDD includes a control unit for controlling reading or writing data from or to a magnetic head, a preamplifier for amplifying the data from the magnetic head, and a channel module which is controlled by the control unit. The channel module converts digital data signals to data write signals and also converts analog signals from the preamplifier to digital signals. Control information is transmitted to the channel module over the data bus which is used to transmit or receive data read/write signals. The channel module performs control in response to transmitted control information.

Abstract: A method for an X windows conferencing enabler to support applications that use non-shareable color cells while running in a conference in which the various X server participants differ in their support of visual classes is disclosed. In the method, an application request to allocate and initialize non-shareable colorcells and is displayed in a conference such that the colors for each X server participant are as close to that requested by the application as the hardware supports. The conference enabler distributes all of the non-shareable requests to each participant in the conference that supports the requests. For those participants that do not support those requests, a NoOp request is sent in place of the allocation requests and an AllocColor or AllocNamedColor is sent in place of the initialization request. Errors and replies are moderated so that the application only receives those errors and replies that are consistent with its X server's expected behavior.

Abstract: An air bearing slider having at least one air bearing pad with a trailing edge shaped to provide the desired flying height profile. The air bearing includes a slider body having leading and trailing edges, an air bearing surface and a first surface recessed with respect to the air bearing surface. Furthermore, the air bearing slider includes at least one compression region. The air bearing surface includes at least one air bearing pad having diverging side edges, a leading edge and a trailing edge. The leading edge of each air bearing pad is positioned substantially adjacent to a compression region. The trailing edge of each air bearing pad has a curvature shaped to provide a desired flying height profile of the air bearing slider.

Abstract: A method and apparatus for reducing the amount of time from a power-on status to a ready status of a hard disk drive device. In response to a power-on of a disk drive device, the rotation of a data recording disk is started. The rotational speed of the data recording disk is increased. When it is detected that the rotational speed of the data recording disk reaches an intermediate rotational speed, which is lower than a final rotational speed of the data recording disk, the rotational speed of the data recording disk is fixed at the intermediate rotational speed. One or more control programs recorded on the data recording disk are read and then stored in a memory. Then a ready signal is sent to a host processor. The disk drive device may then receive a read command from the host processor to read data from the data recording disk and to transfer the data to the host processor is detected.

Abstract: A disk drive and a control method thereof to reduce the number of write operations to a medium while minimizing command overhead time. A disk drive 10 comprises a hard disk controller (HDC) 13, a cache memory 14, and a host interface controller (HIC) 15 with a command queue for retaining a plurality of commands which are cached in cache memory 14. The HIC 15 performs the periphery interface processing by hardware. The disk drive 10 further comprises a local microprocessor unit (MPU) 16 for controlling the overall operation of HDD 10, including operations of HDC 13 and HIC 15. The local MPU 16 instructs the HIC 15 to write data to a medium by write commands cached in the cache memory 14. When local MPU 16 retrieves a command from a plurality of write commands cached in cache memory 14 which is completely overwritten by a command more recently issued, a write operation to the medium is not performed by the retrieved command.

Abstract: A method and system are disclosed for improving performance of adjustable printer clock signals in an electrophotographic device. A source clock signal is output having a source frequency. A first clock signal is output having a first frequency. The first frequency is substantially related to the source frequency by a ratio of n1:m1. An alignment signal is generated for adjusting a first printer clock signal with respect to a second printer clock signal. In response to the first clock signal and the alignment signal, the first printer clock signal is output having a first printer frequency. The first printer frequency is substantially related to the source clock frequency by a ratio of n1n2:m1m2.

Abstract: A method and system for managing top-level windows controlled by a conference enabler is disclosed. The system operates in a conferencing network system having a conference enabler for distributing applications to a plurality of servers. Each server has its own display. The method and system identifies a top-level window sent by the conferenced application. Next, it identifies whether a top-level window is among the requests sent by the conferenced application is a root window. The system then enters a window ID associated with the top-level window into a list of top-level windows. Then, the system provides a slot associated with the top-level window within the list for storing the window configuration of the top-level window as configured by each of the participant servers.

Abstract: An actuator control system and a magnetic disk device having a hybrid control system. The actuator control system includes an LPF that can be processed by the hardware architecture of a HDD that does not include a state estimator. The actuator control system includes an actuator 10, a VCM driver circuit 11 for driving the actuator 10, an ADC 12 for converting the position signal from the actuator 10 into a digital position signal, an MPU 13 for generating the control signal to the actuator 10 in response to the digital position signal, a DAC 14 for converting the control signal into an analog control signal, and an LPF 15 coupled between DAC 14 and VCM driver circuit 11. The MPU 13 compensates the phase delay resulting from the LPF 15 by digital control. Additionally, the digital control reconstructs the state model of a plant including the LPF 15 to a state model requiring no state estimator.

Abstract: The present invention provides a system, method and data format wherein a redundant sync byte or group of sync bytes is provided in a data sector at a distance sufficient to isolate the redundant sync byte from the primary sync byte in the event of multiple byte defects. In a first embodiment, a redundant sync byte, or group of sync bytes, is provided in the AGC field preceding the primary sync region. Upon failure to detect the primary sync byte, an attempt is made on a subsequent revolution to read the secondary sync byte, either by holding the AGC gain prior to reaching the data block, or initiating an “early read” just prior to reaching the data block. In a second embodiment of the invention, the redundant sync byte is provided within the data field subsequent to the primary sync region. On failing to detect the primary sync byte, the secondary sync byte can be read immediately or can be postponed until a subsequent revolution.

Abstract: A method for modifying a substrate surface, including the step of applying a high density plasma to the substrate surface in the presence of a hydrofluorocarbon gas and a carrier gas to form an antiwetting layer on the substrate surface. Optionally, the method including a cleaning step of contacting the slider surface with a carrier gas for a period of time effective to clean the surface.

Abstract: A disk drive and a control method for the disk drive to reduce the number of unnecessary write inhibition operations. A microprocessor unit (MPU) 6 sets an allowable value Cv for the velocity of a magnetic head 1 to V0 until the head passes over N1 sectors after completion of a seek operation, Cv to V1 until the head passes over N2 sectors after passage of N1 sectors, and Cv to V2 after passage of N2 sectors. (N1<N2 and V0<V1<V2) A hard-disk controller (HDC) 10 detects the velocity of the magnetic head 1, based on a position error signal PES from a servo sector regeneration section 8a, and prohibits the write operation of the magnetic head 1 if the velocity exceeds Cv.

Abstract: A system, method, and program of the invention determine a unique combination of four colorants (C'M'Y'K') of a given printer that is equivalent to an externally defined four colorant combination (CMYK) by having the same color values (e.g., L*a*b* values). L*a*b* values associated with each three component combination (CMY) with the fourth component value (K) equal to zero of the externally defined four colorant combination (CMYK) are used in an inversion/interpolation program The printer also prints out a matrix of predetermined varying combinations of the three colorants of the printer (CMY)p with the fourth colorant K equal to zero. L*a*b* values are measured for each patched. These values and the corresponding three colorant combination values are inputted into the inversion/interpolation program.

Abstract: A disk drive and a method for controlling the disk drive in which an additional read from a medium can be performed as needed while minimizing the command overhead to the minimum. In a disk drive device 10, even if a read command is issued, and all the required data is stored in the cache memory such that the data transfer can be performed without the intervention of a local MPU 16, a HIC 15 performs the data transfer so as to leave the last one block and waits for the intervention of the local MPU 16. The local MPU 16 provides instructions to transfer the last one block when the preparation for the command termination is completed, and if a plurality of blocks of data to be transferred are remaining when the local MPU 16 instructs the HIC 15 to transfer the last one block, the HIC 15 executes all the data transfer without stopping the data transfer before the last one block, completing the command.

Abstract: An electronic circuit apparatus is provided comprising a component disk drive, and an electronic circuit implementing the component drive for local storage as an alternative to costlier solid state memory, wherein the electronic circuit has at least one function not related to the operation of the component disk drive, and wherein the electronic circuit uses information stored on the component disk drive to perform the non-storage related function. The apparatus is suitable for a plurality of electronic devices and for electronic circuit applications residing in a card enclosure adapted for plugging into an electronic device or computer. In the preferred embodiment, the component disk drive comprises a disk with a single recording surface mounted directly to a flat motor, a low profile actuator assembly including a single suspension supporting an MR head, and means for "parking" the head at the center of the disk.

Abstract: It is the object of the present invention to provide an improved peripheral unit, incorporating an MPU, that can reduce power consumption appropriately in accordance with mode transition when a host command from a host computer system is being processed, and a control method therefor. An MPU that requires a large amount of power, for example, is activated only when necessary, such as for the processing of a command (host command) from a computer system (host), and is deactivated during all other periods, by relinquishing the right of controlling of the operations to the respective sequencer circuits. The first sequencer circuit is activated only when necessary, such as for the transfer of data to the computer system. For the hardware operation of a device (e.g., writing data to or reading data from the device), the first sequencer circuit is deactivated, relinquishing the control right of that operation to the second sequencer circuit.

Abstract: A motor having enhanced transient characteristics during the acceleration time of the motor in a disk unit. The motor includes a motor controller having a phase-locked loop (PLL) or frequency-locked loop (FLL) for controlling the speed of a spindle motor in a disk drive. The PLL or FLL is coupled to a digital filter. The difference between a phase or frequency synchronized with the rotational speed of the motor and a target value is received by the digital filter. The digital filter output is added to the target value. The sum of the filter output and the target value is set in the PLL or FLL as an adjusted target value to perform PLL control or FLL control. With this arrangement, the time to shift from a low-speed rotation state to a high-speed rotation state can be shortened.