Apparatus for and method of stop control for a spindle motor in

Details Apparatus for and method of stop control for a spindle motor in Apparatus for and method of stop control for a spindle motor in

1989-02-13

1990-12-18

Richardson, Robert L.

Facsimile and static presentation processing

Facsimile

Recording apparatus

358341, 369 4426, H04N 576, G11B 700

Patent

active

049790480

ABSTRACT:
An apparatus and a method of stopping a spindle motor for rotating a composite disk in a disk player. The composite disk contains a first area having information recorded thereon at a first rotational frequency, and a second area having information recorded thereon at a second rotational frequency which is greater than the first rotational frequency. The spindle motor is stopped when a stop or eject command is instructed during or after information is read from the second area of the composite disk by moving a pickup for reproducing information recorded on the disk to the first area and supplying a counter torque brake signal to the spindle motor, thereby slowing the rotational frequency of the disk to a rotational frequency in which information can be read from the first area. A further counter torque brake signal is supplied to the spindle motor for a predetermined amount of time after the moved pickup begins to read information recorded on the first area to thereby stop the rotation of the composite disk.

REFERENCES:
patent: 4481615 (1984-11-01), Hioki
patent: 4509160 (1985-04-01), Eggers
patent: 4716558 (1987-12-01), Katayama et al.
patent: 4761692 (1988-08-01), Yoshida et al.
patent: 4829498 (1989-05-01), Aoyagi et al.
patent: 4831469 (1989-05-01), Hanson et al.
patent: 4872068 (1989-10-01), Ishii et al.

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