Abstract: A system providing a multiple number of virtual channels in a computer system having a smaller number of physical channels. Multiple queues are provided that are mapped to channels. The mapping of the queues to the channels changes depending on the message traffic and priority of the queues. Queues of lower priority are preempted if a higher priority queue needs a channel.

Abstract: A method of manufacturing an index apparatus includes thermally transferring a hot stamped section having a low light reflectance onto an outer peripheral surface of a magnet of a frequency generator for speed detection provided on an outer periphery of the motor. The method also includes thermally transferring a hot stamp section having a high light reflectance and a smaller width than the hot stamp section having a low light reflectance onto the hot stamp section having a low light reflectance. A position mark can be provided in the vicinity of the hot stamp section having a high light reflectance. The position mark serves for detecting a position of the hot stamp section having a high light reflectance.

Abstract: A pickup feeding apparatus is comprised of a first rack provided on a pickup supporting member supported so as to become movable along a guide shaft, a second rack provided slidably relative to the first rack, a drive force transmitting gear for transmitting a driving force of a driving source to the first and second racks, a spring member for spring-biasing one of the first and second racks to the other along the guide shaft of the first and second racks in such a direction that gear teeth of a gear of the drive force transmitting means which are meshed with the first and second racks are gripped. A disc player is also disclosed, in which a disc drive motor and a pickup feeding motor are provided on the same chassis and the disc drive motor is located on the chassis at the position above the pickup moving locus fed by the pickup feeding device.