Floppy disk drive and frame structure therefor
AssigneeMitsumi Electric Co., Ltd.
InventorsHisateru Komatsu, Mamoru Takahashi
Life of this patent
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Abstract
In a floppy disk drive having a main frame in which a floppy disk is inserted and a DD motor for rotatably driving the floppy disk inserted in the main frame, the floppy disk drive has a motor frame for mounting the DD motor thereon that is constituted by one piece integrated by the main frame. Preferably, the motor frame part may have a drawn-shape obtained by drawing the main frame. In addition, the floppy disk drive has an electronic processing arrangement for a frequency generation pattern. The electronic processing arrangement gives play to a function equivalent to the frequency generation pattern required to control the DD motor.
Claims2
A floppy disk drive comprising:
- a main frame in which a floppy disk is inserted;
- a motor for rotatably driving the floppy disk inserted in the main frame;
- a motor frame on which the motor is mounted and that is integrally formed with the main frame;
- and
- an electronic processing arrangement for effecting a function equivalent to a frequency generation pattern required to control the motor;
- wherein the electronic processing arrangement obtains a servo signal for controlling a rotation speed of the motor by detecting an electromotive force induced in one of three-phase coils of the motor that is put into a high-impedance state.
Dependencies are inferred from the claim text.