US5051674A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for preventing an overrun of a spindle motor
Assignee: Samsung Electronics Co Ltd
•
Filing: 1990-05-03
•
Granted: 1991-09-24
•
Expires: 2010-05-03
Abstract
Abstract A spindle motor controlling apparatus having a motor driving device, a motor speed controlling device, a MICOM and an image processing device uses a horizontal synchronization comparing device which detects a horizontal synchronization signal of the image processing device and compares the detected synchronization signal with a reference synchronization signal and applies the compared signal to the MICOM. The motor driving device further includes a switching part for providing power according to the control signal of the MICOM to the spindle motor.
Inventors
- 👤 Young-Han Kim
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 15:48
CPC Classifications
G; G11; G11B; G11B19/00; G11B19/02; G11B19/20; G11B19/24; G11B19/247
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
146 words
A spindle motor controlling apparatus having means for driving a spindle motor, means for controlling rotating speed of said spindle motor, processing means for applying a first control signal to said motor speed controlling means, image processing means for providing an image signal by picking up a data signal of a disk mounted on said spindle motor, horizontal synchronization comparing means for detecting a horizontal synchronization signal from said image processing means and for providing a compared signal by comparing the detected synchronization signal with a reference synchronization signal and for applying the compared signal to said processing means, comprising: said processing means providing a second control signal based on said compared signal; and switching means for controlling the supply of power to said spindle motor according to the second control signal of said processing means, whereby the spindle motor can be protected from the overrun.
Claim 2
Dependent Claim
146 words
A spindle motor controlling apparatus having means for driving a spindle motor, means for controlling rotating speed of said spindle motor, processing means for applying a first control signal to said motor speed controlling means, image processing means for providing an image signal by picking up a data signal of a disk mounted on said spindle motor, horizontal synchronization comparing means for detecting a horizontal synchronization signal from said image processing means and for providing a compared signal by comparing the detected synchronization signal with a reference synchronization signal and for applying the compared signal to said processing means, comprising: said processing means providing a second control signal based on said compared signal; and switching means for controlling the supply of power to said spindle motor according to the second control signal of said processing means, whereby the spindle motor can be protected from the overrun.
Claim 3
Dependent Claim
56 words
A spindle motor controlling apparatus according to claim 1, wherein the horizontal synchronization comparing means comprises: horizontal synchronization signal detecting means for detecting the horizontal synchronization signal of the image signal in the image processing means; reference synchronization signal generating means for providing said reference synchronization signal and synchronization signal based upon the reference synchronization signal.
References Cited (Backward Citations)
US3893169A
Cited
US4423440A
Cited
US4555734A
Cited
US4614981A
Cited
US4675855A
Cited
US4623939A
Cited
US4855847A
Cited
US4763205A
Cited
US4855978A
Cited
US4748608A
Cited
US4815063A
Cited
US4823203A
Cited
US4947264A
Cited
US4835753A
Cited
US4908810A
Cited
US4885644A
Cited
US4933774A
Cited
US4835632A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1994-09-23 | 1995-03-25 | 1995-09-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1998-09-23 | 1999-03-25 | 1999-09-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2002-09-23 | 2003-03-25 | 2003-09-24 | $7700.00 | Window Closed / Lapsed |