摘要:
A substrate holding and rotating apparatus includes: a spin base connected to a rotary shaft and rotatable therearound; holding members attached to the spin base and displaceable between holding positions at which the holding members come in contact with the peripheral edge of the substrate such that the holding members are capable of holding the substrate, and retreat positions at which the holding members are retreated from the holding positions; a holding members drive mechanism for driving the holding members between the holding positions and the retreat positions; and a rotation regulating mechanism arranged to be brought, in association with the operation of the holding-member drive mechanism, into a rotation allowing state where the spin base is allowed to be rotated and into a rotation regulating state where the rotation of the spin base is regulated.
摘要:
Shock-absorbing material made from a mixture of solid particles and viscous elastic material is arranged at the periphery of an information storage and retrieval device. When an external shock is applied to the device, the shock-absorbing material is greatly deformed and dissipates the shock energy by inner friction sufficiently to prevent damage to the inner mechanism of the device. The deformed shock-absorbing material can be restored to the original shape so that it is repeatedly usable. Furthermore, by comparing the deformed shape and the quick reference table provided with the device, the amount shock acceleration can be roughly determined. The device conforms to one of a series of dimensional standards for information storage and retrieval devices.
摘要:
A tristate buffers includes a logic circuit which outputs a high-level signal. The output signal is fed to gates of 1st and 2nd P-channel MOS transistors (TRs). A 3rd PMOS TR has a gate connected to a drain of the 2nd PMOS TR, and a drain connected to a drain of the 1st PMOS TR. A 4th PMOS TR has a gate connected to the drain of the 1st PMOS TR, and a drain connected to the drain of the 2nd PMOS TR. A 1st NMOS TR and a 2nd NMOS TR have their drains connected respectively to the drains of the 1st and the 3rd PMOS TRs and the drains of the 2nd and the 4th PMOS TRs. A 3rd NMOS TR and a 4th NMOS TR are connected respectively between the source of the 1st NMOS TR and ground and the source of the 2nd NMOS TR and the ground. The drains of the 1st and the 3rd PMOS TRs and the 1st NMOS TR are connected to an inverter. A 5th PMOS TR is connected to the drains of the 2nd and the 4th PMOS TRs and the 2nd NMOS TR. A 5th NMOS TR is connected between the signal output and the ground and is fed on its gate by the inverter output.
摘要:
Shift of input data without split by a shifter, generation of code extension data by a code extension data generator, and generation of a mask signal by a mask signal generator are carried out in parallel. The mask signal generator generates the mask signal based on an amount of shift and split mode information. An output selector replaces data shifted by the shifter with code extension data bit by bit based on the mask signal, and outputs data which are shifted and code-extended according to the split mode information and arithmetic/logical shift information. In a carry-select type adder/subtractor as another embodiment, if split parallel process is to be executed, both a pair of unit adders/subtractors execute an arithmetic operation to be carried out for the case where no carry is supplied from lower digits, and then a selector selects an arithmetic result, which is obtained when no carry is supplied from lower digits, regardless of the carry from the lower digits.
摘要:
A magnetic disk drive provided with a loadunload mechanism of the rampload type is disclosed, in which even if loading and unloading operations are frequently repeated, damage to a head due to impingement during the unloading operation is eliminated, and a ramp and the lift-tab of a suspension are less liable to wear, and an operation failure or malfunction due to wear debris is eliminated, thereby providing the drive of high reliability. The ramp is supported for minute displacement, and the posture of the ramp is changed during the unloading operation. The restraining members for restraining the posture of the ramp are provided, and the cushioning members are provided at portions that the ramp and the restraining members come into contact with each other. There can be achieved a drive of high reliability in which even if the loading and unloading operations are frequently repeated, damage to the head due to impingement of the lift-tab during the unloading operation is eliminated, and the lift-tab and the ramp are less liable to wear, and an operation failure due to wear debris is eliminated.
摘要:
A sign extension unit has first and second sign extenders to extend a sign bit, i.e., the most significant bit of input data to the higher side of the input data. The input data is divided into n-bit blocks. The first sign extender carries out sign extension based on highest bits of the blocks, and the second sign extender carries out sign extension in each of the blocks based on the highest bits of the respective blocks.
摘要:
The battery has an electrode assembly with a first electrode plate and second electrode plate forming a positive electrode plate and negative electrode plate layered via a separator. An external case holds the electrode assembly, and a collector plate is electrically connected to the first electrode plate. The first electrode plate is a non-sintered type electrode with active material loaded into a porous metal material substrate, and has a connecting band of exposed substrate and an active material region. A protective tape is attached to at least one side of the connecting band of the first electrode plate. The connecting band is electrically connected to the collector plate. The second electrode plate projects out beyond the active material border of the connecting band and the active material region, and the active material border is opposite the second electrode plate with the separator in between the first electrode plate and the second electrode plate.
摘要:
Disclosed is a pipeline information processing circuit which comprises a register control unit for outputting a plurality of data held in registers at a time; an arithmetic operation unit for carrying out a collective arithmetic operation of a plurality of data; and a bypass control unit for comparing an operation result outputted from the arithmetic operation unit and a data outputted from the register control unit, selecting a data to be an object of the next arithmetic operation, and transferring the selected data to the arithmetic operation unit through a suitable bypass.
摘要:
An automatic document feeder for an image processing machine. A main frame is so mounted as to be pivoted with respect to a platen glass provided on the housing of the image forming machine. A paper feeding unit is provided at one end of the main frame, and a paper discharging unit is provided at the other end. A conveyer belt mechanism is disposed between the paper feeding unit and the paper discharging unit. A document-placing table is attached to a table support means provided for the paper feeding unit, and is allowed to move in the back-and-forth direction of the image forming machine, so that its position can be adjusted, thereby permitting adjustment of any deviation between the optical axis of the image forming machine and the center line of the document fed by the automatic document feeder. The paper feeding unit is further provided with an open/close frame pivotally mounted on the main frame by at least one hollow split-bearing. An electrical wire is inserted within the hollow cylindrical portion of the split-bearing in order to eliminate the need to adjust the movement of the electrical wire with the rotation of the open/close frame.
摘要:
An automatic document conveying apparatus in which a normal continuous document conveying state and a single document conveying state, suitable for a document having high importance such as an original of a design, can be selectively determined, and carrying and discharging of documents can be fully well conducted. In a document carrying passage, a restricting member and a separation roller which cooperate with a feed roller are disposed. The forward end of the restricting member approaches or contacts the feed roller, and the separation roller is driven to rotate in a direction opposite to the document conveying direction in the continuous document conveying state. In the single document conveying state, the restricting member is isolated from the feed roller, and the separation roller can be freely rotated.