Controller for information recording and reproducing device and control method for the information recording and reproducing device

• US 20030197967A1
• Filed: 09/18/2002
• Published: 10/23/2003
• Est. Priority Date: 04/17/2002
• Status: Active Grant

• Current Assignee: Hitachi Global Storage Technologies Japan Limited (Hitachi, Ltd.)
• Original Assignee: Hitachi Global Storage Technologies Japan Limited (Hitachi, Ltd.)
• Inventors: Hanada, Kazuyoshi, Beppu, Osamu
• Granted Patent: US 6,965,487 B2
• Time in Patent Office: Days
• US Class Current: 360/69
• CPC Class Codes: G11B 19/04 Arrangements for preventing, inhibiting, or warning against double recording on the same blank or against other recording or reproducing malfunctions

Abstract

A control device for preventing abrasion inside bearings in an information recording and reproducing device mounted on an automobile and preventing degradation in rotational accuracy, the information recording and reproducing device including disk media holding information, heads for recording or reproducing information from the disk media, a carriage for turning to position the heads on surfaces of the disk, a bearing part permitting the carriage to turn, a spindle motor for rotatingly driving the disk media, and a bearing part of the spindle motor, the control device comprising a detecting unit for detecting a vehicle operating manner, which is carried out before vehicular vibrations are caused, and a control unit for starting rotation and/or starting swings the bearing part of the spindle motor and/or the bearing part of the carriage on the basis of a signal from the detecting unit.

Claims

1. A control device for an on-board information recording and reproducing device including disk media holding information, a head for recording or reproducing information from the disk media, a carriage turning to position the head on a surface of the disk media, a bearing part permitting the carriage to turn, a spindle motor for rotatingly driving the disk media, and a bearing part of the spindle motor, the control device comprising:

detecting means for detecting a vehicle operating manner, which is carried out before vehicular vibrations are caused; and

control means for starting rotation and/or starting swings the bearing part of the spindle motor and/or the bearing part of the carriage on the basis of a signal from the detecting means.

4. The control device for an on-board information recording and reproducing device according to claim 1, wherein the vehicle operating manner is one of the following manners, a door key inserted manner, a starting key inserted manner, a seat taken manner, and a seat belt bound manner.

2. A control device for an on-board information recording and reproducing device comprising disk media holding information, a head for recording or reproducing information from the disk media, a carriage turning to position the head on a surface of the disk media, a bearing part permitting the carriage to turn, a spindle motor for rotatingly driving the disk media, and a bearing part of the spindle motor, the control device comprising:

an acceleration sensor provided on a vehicle or the information recording and reproducing device;

detecting means for detecting whether an acceleration from the acceleration sensor has exceeded a predetermined value; and

control means for starting rotation and/or starting swings the bearing part of the spindle motor and/or the bearing part of the carriage on the basis of a signal from the detecting means.

6. The control device for an on-board information recording and reproducing device according to claim 2, wherein the acceleration sensor is mounted on a door adjacent to a driver'"'"'s seat.

3. A control device for an on-board information recording and reproducing device comprising disk media holding information, a head for recording or reproducing information from the disk media, a carriage turning to position the head on a surface of the disk media, a bearing part permitting the carriage to turn, a spindle motor for rotatingly driving the disk media, and a bearing part of the spindle motor, the control device comprising:

a velocity sensor existing in a vehicle;

detecting means for detecting output from the velocity sensor; and

control means for starting rotation and/or starting swings the bearing part of the spindle motor and/or the bearing part of the carriage on the basis of a signal from the detecting means.

5. The control device for an on-board information recording and reproducing device, further comprising a solar cell mounted on the vehicle to serve as a power source for starting rotation of the bearing parts.

7. A control method for an on-board information recording and reproducing device including disk media holding information, a head for recording or reproducing information from the disk media, a carriage turning to position the head on a surface of the disk media, a bearing part permitting the carriage to turn, a spindle motor for rotatingly driving the disk media, and a bearing part of the spindle motor, the method comprising the steps of:

detecting a manner before a vehicle continuously causes vibrations; and

starting rotation and/or starting swings the bearing part of the spindle motor and/or the bearing part of the carriage on the basis of the detecting the manner in advance.

8. A control method for an on-board information recording and reproducing device including disk media holding information, a head for recording or reproducing information from the disk media, a carriage turning to position the head on a surface of the disk media, a bearing part permitting the carriage to turn, a spindle motor for rotatingly driving the disk media, and a bearing part of the spindle motor, the method comprising the steps of:

detecting, by means of an acceleration sensor provided on a vehicle or the information recording and reproducing device, whether acceleration has exceeded a predetermined value; and

starting rotation and/or starting swings the bearing part of the spindle motor and/or the bearing part of the carriage on the basis of the detecting signal.

9. A control method for an on-board information recording and reproducing device including disk media holding information, a head for recording or reproducing information from the disk media, a carriage turning to position the head on a surface of the disk media, a bearing part permitting the carriage to turn, a spindle motor for rotatingly driving the disk media, and a bearing part of the spindle motor, the method comprising the steps of:

detecting a vehicular velocity by means of a velocity meter mounted on a vehicle; and

rotating and/or turning the bearing part of the spindle motor and/or the bearing part of the carriage on the basis of the detecting of the vehicular velocity while the vehicle is traveling.