IPC분류정보
국가/구분 |
United States(US) Patent
등록
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국제특허분류(IPC7판) |
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출원번호 |
US-0446886
(2003-05-27)
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발명자
/ 주소 |
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출원인 / 주소 |
- Western Digital Technologies, Inc.
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대리인 / 주소 |
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인용정보 |
피인용 횟수 :
55 인용 특허 :
5 |
초록
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A spindle motor in a disk drive is driven by a driving circuit that, upon receipt of a signal or command, selectively spins up the spindle motor according to a first spin up profile or according to a second spin up profile that is defined to provide a longer spin up time in comparison with the spin
A spindle motor in a disk drive is driven by a driving circuit that, upon receipt of a signal or command, selectively spins up the spindle motor according to a first spin up profile or according to a second spin up profile that is defined to provide a longer spin up time in comparison with the spin up time defined by the first spin up profile. The second spin up profile spins up the spindle motor in a longer period of time and/or generates less acoustic noise as compared to the first spin up profile.
대표청구항
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I claim: 1. A disk drive, comprising: a base; a disk; a clock configured to generate a time of day indicating signal; a spindle motor for spinning the disk, the spindle motor being attached to the base; a spindle motor driving circuit for driving the spindle motor, the spindle motor driving circui
I claim: 1. A disk drive, comprising: a base; a disk; a clock configured to generate a time of day indicating signal; a spindle motor for spinning the disk, the spindle motor being attached to the base; a spindle motor driving circuit for driving the spindle motor, the spindle motor driving circuit being configured to receive the time of day indicating signal and to selectively spin up the spindle motor according to one of: a first spin up profile, and a second spin up profile defined to provide a longer spin up time in comparison with a spin up time defined by the first spin up profile responsive to a state of the time of day signal, the state of the time of day indicating signal indicating a time of day. 2. The disk drive of claim 1, wherein the spindle motor driving circuit is configured to drive the spindle motor according to the first spin up profile responsive to a first command and to drive the spindle motor according to the second spin up profile responsive to a second command. 3. The disk drive of claim 1, wherein the spindle motor driving circuit is configured to drive the spindle motor according to the first spin up profile responsive to a first signal and to drive the spindle motor according to the second spin up profile responsive to a second signal. 4. The disk drive of claim 1, wherein the first and second spin up profiles are defined such that the spindle motor generates less acoustic noise when spinning up according to the second spin profile than when spinning up according to the first spin up profile. 5. The disk drive of claim 1, further including a register for storing a spin up profile flag according to the state of the time of day indicating signal and wherein the spindle motor driving circuit is configured to drive the spindle motor according to the first spin up profile when the spin up profile flag is in a first logical state and to drive the spindle motor according to the second spin up profile when the spin up profile flag is in a second logical state. 6. The disk drive of claim 1, further including a flash memory for storing a spin up profile flag according to the state of the time of day indicating signal and wherein the spindle motor driving circuit is configured to drive the spindle motor according to the first spin up profile when the spin up profile flag is in a first logical state and to drive the spindle motor according to the second spin up profile when the spin up profile flag is in a second logical state. 7. The disk drive of claim 1, further including an ambient acoustic level measuring circuit coupled to the spindle motor driving circuit, the spindle motor driving circuit being configured to spin up the spindle motor according to the first spin up profile according to the state of the time of day indicating signal and when the ambient acoustic level is above a selectable threshold and to spin up the spindle motor according to the second spin up profile according to the state of the time of day indicating signal and when the ambient acoustic level is below the selectable threshold. 8. The disk drive of claim 7, wherein the ambient acoustic level measuring circuit includes a microphone. 9. The disk drive of claim 1, wherein the spindle motor driving circuit is configured to selectively drive the spindle motor according to one of a plurality of mutually different third spin up profiles, each of the plurality of third spin up profiles being defined to provide mutually different combinations of spin up times and audible noise during spin up of the spindle motor. 10. The disk drive of claim 9, further including an ambient acoustic level measuring circuit coupled to the spindle motor driving circuit and wherein the spindle motor driving circuit is configured to drive the spindle motor according to the first spin up profile, the second spin up profile or one of the plurality of third spin up profiles according to the state of the time of day indicating signal and according to an ambient acoustic level measured by the ambient acoustic level measuring circuit. 11. A host device including a user interface and a data storage device, the data storage device comprising: a base; a disk; a clock configured to generate a time of day indicating signal; a spindle motor for spinning the disk, the spindle motor being attached to the base; a spindle motor driving circuit for driving the spindle motor, the spindle motor driving circuit being configured to receive the time of day indicating signal and to selectively spin up the spindle motor according to one of: a first spin up profile, and a second spin up profile defined to provide a longer spin up time in comparison with a spin up time defined by the first spin up profile responsive to a state of the time of day signal, the state of the time of day indicating signal indicating a time of day. 12. The host device of claim 11, wherein the spindle motor is configured to be spun up according to the first spin up profile responsive to a first command and to be spun up according to the second spin up profile responsive to a second command. 13. The host device of claim 11, wherein the spindle motor is configured to be spun up according to the first spin up profile responsive to a first signal and to be spun up according to the second spin up profile responsive to a second signal. 14. The host device of claim 11, wherein the first and second spin up profiles are defined such that the spindle motor generates less acoustic noise when spinning up according to the second spin profile than when spinning up according to the first spin up profile. 15. The host device of claim 11, further including an ambient acoustic level measuring circuit, the spindle motor being configured to be spun up according to the first spin up profile according to the state of the time of day indicating signal and when the ambient acoustic level is above a selectable threshold and to be spun up according to the second spin up profile according to the state of the time of day indicating signal and when the ambient acoustic level is below the selectable threshold. 16. The host device of claim 15, wherein the ambient acoustic level measuring circuit includes a microphone. 17. A random access media recorder/player configured to record and play a video and/or audio stream, comprising: a user interface and a disk drive, the disk drive including: a base; a disk; a clock configured to generate a time of day indicating signal; a spindle motor for spinning the disk, the spindle motor being attached to the base; a spindle motor driving circuit for driving the spindle motor, the spindle motor driving circuit being configured to receive the time of day indicating signal and to selectively spin up the spindle motor according to one of: a first spin up profile, and a second spin up profile defined to provide a longer spin up time in comparison with a spin up time defined by the first spin up profile responsive to a state of the time of day signal, the state of the time of day indicating signal indicating a time of day. 18. The random access media recorder/player of claim 17, wherein the spindle motor is configured to be spun up according to the first spin up profile responsive to a first command and to be spun up according to the second spin up profile responsive to a second command. 19. The random access media recorder/player of claim 17, wherein the spindle motor is configured to be spun up according to the first spin up profile responsive to a first signal and to be spun up according to the second spin up profile responsive to a second signal. 20. The random access media recorder/player of claim 17, wherein the first and second spin up profiles are defined such that the spindle motor generates less acoustic noise when spinning up according to the second spin profile than when spinning up according to the first spin up profile. 21. The random access media recorder/player of claim 17, further including an ambient acoustic level measuring circuit, the spindle motor being configured to be spun up according to the first spin up profile according to the state of the time of day indicating signal and when the ambient acoustic level is above a selectable threshold and to be spun up according to the second spin up profile according to the state of the time of day indicating signal and when the ambient acoustic level is below the selectable threshold. 22. The random access media recorder/player of claim 21, wherein the ambient acoustic level measuring circuit includes a microphone. 23. Method of operating a disk drive, comprising: providing a clock within the disk drive, the clock being configured to generate a time of day indicating signal; generating the time of day indicating signal; a first spinning up step to spin up the spindle motor according to a first spin up profile responsive to a first state of the time of day indicating signal; a second spinning up step to spin up the spindle motor according to a second spin up profile responsive to a second state of the time of day indicating signal, the second spin up profile being defined to provide a longer spin up time in comparison with a spin up time defined by the first spin up profile, and selectively reading and/or writing to a disk after the spindle motor has been spun up to a target operating velocity. 24. The method of claim 23, wherein the first and second spin up profiles are defined such that the spindle motor generates less acoustic noise when spinning up according to the second spin profile than when spinning up according to the first spin up profile. 25. The method of claim 23, wherein the first and second spin up profiles are defined such that the spindle motor spins up in a shorter period of time when spinning up according to the first spin profile than when spinning up according to the second spin profile. 26. The method of claim 23, wherein the first spinning up step is carried out responsive to a first command and wherein the second spinning up step is carried out responsive to a second command. 27. The method of claim 23, wherein the disk drive includes a register for storing a spin up profile flag and wherein the first spinning up step is carried out according to the state of the time of day indicating signal and when the spin up profile flag is in a first logical state and wherein the second spinning up step is carried out according to the state of the time of day indicating signal and when the spin up profile flag is in a second logical state. 28. The method of claim 23, wherein the disk drive includes a flash memory for storing a spin up profile flag and wherein the first spinning up step is carried out according to the state of the time of day indicating signal and when the spin up profile flag is in a first logical state and wherein the second spinning up step is carried out according to the state of the time of day indicating signal and when the spin up profile flag is in a second logical state. 29. The method of claim 23, wherein the disk drive includes a user-actuable switch and wherein the first spinning up step is carried out according to the state of the time of day indicating signal and when the user-actuable switch is in a first state and wherein the second spinning up step is carried out according to the state of the time of day indicating signal and when the user-actuable switch is in a second state. 30. The method of claim 23, wherein the disk drive includes an ambient acoustic level measuring circuit, and wherein the first spinning up step is carried out according to the state of the time of day indicating signal and when the ambient acoustic level is above a selectable threshold and wherein the second spinning up step is carried out according to the state of the time of day indicating signal and when the ambient acoustic level is below the selectable threshold. 31. The method of claim 30, wherein the ambient acoustic level measuring circuit includes a microphone and wherein the first spinning up step is carried out according to the state of the time of day indicating signal and when the ambient acoustic level measured by the microphone is above a selectable threshold and wherein the second spinning up step is carried out according to the state of the time of day indicating signal and when the ambient acoustic level measured by the microphone is below the selectable threshold. 32. The method of claim 23, further comprising: a third spinning step to spin up the spindle motor according to one of a plurality of mutually different third spin up profiles responsive to a corresponding plurality of third states of the time of day indicating signal, each of the plurality of third spin up profiles being defined to provide mutually different combinations of spin up times and audible acoustic noise during spin up of the spindle motor. 33. The method of claim 32, wherein the disk drive includes an ambient acoustic level measuring circuit and wherein one of the first, second and third spinning steps is carried out according to the time of day indicating signal and an ambient acoustic level measured by the ambient acoustic level measuring circuit.
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