USH1221H
Expired / Lapsed
US
⏱️ 0.0 years remaining
High speed, small diameter disk storage system
Assignee: John S. Best
•
Filing: 1991-12-18
•
Granted: 1993-08-03
•
Expires: 2011-12-18
Abstract
Abstract A high speed, small diameter disk storage system having a plurality of disk drive devices utilizing disks with a nominal 65 mm diameter rotated at a speed of approximately 10,000 RPM which can be optimally arranged in a four drive system to match the space geometry of the traditional half-high flexible disk drive used in a personal computer.
Inventors
- 👤 John S. Best
- 👤 Timothy J. Chainer
- 👤 Thomas W. Glaser
- 👤 Richard Greenberg
- 👤 Avijit Mukherjee
- 👤 Jerry L. Neubauer
- 👤 John R. Reidenbach
- 👤 Robert E. Schopp
- 👤 Robert A. Scranton
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 15:43
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/08; G06F11/10; G06F11/1076; G06F11/1008; G06F3/00; G06F3/06; G06F3/0601; G11; G11B; G11B20/00; G11B20/10; G11B20/18; G11B20/1833; G06F3/0668; G06F3/0671; G06F3/0673; G11C; G11C29/00; G11C29/70; G11C29/88
Claims Analysis
Total Claims: 25
Claim 1
Independent Claim
97 words
A disk storage drive comprising: a. at least one hard disk having a substrate nominal diameter of less than 85 mm, and a recording medium including a coating of magnetic material thereon having a plurality of data tracks suitable for magnetic recording; b. spindle drive means for rotating said disk at an operating speed greater than 5,500 RPM; c. transducer means for coaction with said magnetic material for reading and recording data; and, d. actuator means for positioning said transducer means over a selected one of said plurality of said plurality of data tracks on said disk.
Claim 2
Dependent Claim
97 words
A disk storage drive comprising: a. at least one hard disk having a substrate nominal diameter of less than 85 mm, and a recording medium including a coating of magnetic material thereon having a plurality of data tracks suitable for magnetic recording; b. spindle drive means for rotating said disk at an operating speed greater than 5,500 RPM; c. transducer means for coaction with said magnetic material for reading and recording data; and, d. actuator means for positioning said transducer means over a selected one of said plurality of said plurality of data tracks on said disk.
Claim 3
Dependent Claim
18 words
A disk storage drive according to claim 1 wherein said diameter has a nominal value of 65 mm.
Claim 4
Dependent Claim
19 words
A disk storage drive according to claim 2 wherein said hard disk has a nominal thickness of 25 mils.
Claim 5
Dependent Claim
24 words
A disk storage drive according to claim 3 wherein said spindle drive means rotates said disk at a nominal operating speed of 10,000 RPM.
Claim 6
Dependent Claim
24 words
A disk storage drive according to claim 2 wherein said spindle drive means rotates said disk at a nominal operating speed of 10,000 RPM.
Claim 7
Dependent Claim
19 words
A disk storage drive according to claim 1 wherein said hard disk has a nominal thickness of 25 mils.
Claim 8
Dependent Claim
24 words
A disk storage drive according to claim 3 wherein said spindle drive means rotates said disk at a nominal operating speed of 10,000 RPM.
Claim 9
Dependent Claim
24 words
A disk storage drive according to claim 1 wherein said spindle drive means rotates said disk at a nominal operating speed of 10,000 RPM.
Claim 10
Dependent Claim
17 words
A disk storage drive according to claim 1 wherein said hard disk substrate is made of glass.
Claim 11
Dependent Claim
19 words
A disk storage drive according to claim 1 wherein said hard disk substrate is made of semiconductor grade silicon.
Claim 12
Dependent Claim
18 words
A disk storage drive according to claim 1 wherein said hard disk substrate is made of ceramic material.
Claim 13
Dependent Claim
21 words
A disk storage drive according to claim 1 having nominal external dimensions corresponding to 0.25 of a standard 51/4" disk drive.
Claim 14
Dependent Claim
15 words
A disk storage drive according to claim 1 wherein said nominal external dimensions are 0.8125"×4"×2.875".
Claim 15
Dependent Claim
58 words
A disk storage system comprising N drives according to claim 1, wherein N is an integer greater than 1, wherein data stored therein in interlaid fashion is recorded on said recording medium in first through N-1 of said drives and parity information for said recorded data is recorded on said recording medium in the Nth of said drives.
Claim 16
Dependent Claim
10 words
A disk storage system according to claim 14 wherein N=4.
Claim 17
Dependent Claim
52 words
A disk storage system according to claim 14 further including control means for receiving blocks of data to be stored in said system, converting received data blocks into corresponding N-1 partitions plus a corresponding parity partition and storing each of said N partitions on a respective one of said N disk drives.
Claim 18
Dependent Claim
10 words
A disk storage system according to claim 16 wherein N=4.
Claim 19
Dependent Claim
38 words
A disk storage system according to claim 17 wherein said control means includes regeneration control means for reading corresponding data and parity partitions from each of said four drives and converting said partitions into the data originally stored.
Claim 20
Dependent Claim
55 words
A disk storage system according to claim 18 wherein said control means further includes parity check means, responsive to the data partitions recorded on the recording medium in three of said drives and the parity information recorded on a fourth of said drives for performing a parity check on said data read from said drives.
Claim 21
Dependent Claim
32 words
A disk storage system according to claim 18 further including error correction means responsive to the corresponding data bits contained on any three of said drives for regenerating the data originally stored.
Claim 22
Dependent Claim
126 words
A disk storage system according to claim 17 wherein said control means further includes: a. disconnect signalling means for detecting the disconnection of any one of said four drives from said system and generating a disconnect signal indicating which of said drives has been disconnected; b. connect signalling means for detecting the reconnection of any one of said four drives to said system and generating a reconnection signal indicating which of said drives has been reconnected; and, e. regeneration means responsive to said disconnect signal and to said reconnect signal for reading corresponding data or parity partitions from three of said drives which remain connected, regenerating the data or parity partitions originally resident on said disconnected drive and recording said regenerated partition on said reconnected drive.
Claim 23
Dependent Claim
25 words
A disk storage system according to claim 21 wherein said control means further includes means for disabling said system in response to said disconnect signal.
Claim 24
Dependent Claim
26 words
A disk storage system according to claim 22 wherein said control means further includes means for enabling said disabled system in response to said reconnection signal.
Claim 25
Dependent Claim
93 words
A hard disk storage system according to claim 14 further including: a. means responsive to each of said spindle drive means for generating spindle speed error signals indicating the phase difference between the respective rotational positions of the disks of each of said drives; and, b. spindle drive control means responsive to said error signals for electronically locking the rotational speed and relative position of the disks of said drives whereby data recorded in interlaid fashion on the respective recording mediums of said N drives may be simultaneously accessed for reading and recording.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1996-08-02 | 1997-02-01 | 1997-08-03 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2000-08-02 | 2001-02-01 | 2001-08-03 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2004-08-02 | 2005-02-01 | 2005-08-03 | $7700.00 | Window Closed / Lapsed |