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This patent was reissued on Sep. 4 , 2007 as patent
USRE39809
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 Title: |
US5050013:
Hard sectoring circuit and method for a rotating disk data storage device
[ Derwent Title ]
>> View Certificate of Correction for this publication
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| Country: |
US United States of America
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| Inventor: |
Holsinger, Steven V.; Oklahoma City, OK
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| Assignee: |
Seagate Technology, Inc., Scotts Valley, CA
other patents from SEAGATE TECHNOLOGY, INCORPORATED (757172) (approx. 1,115)
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| Published / Filed: |
1991-09-17
/ 1990-05-04
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| Application Number: |
US1990000519497
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| IPC Code: |
Advanced:
G11B 19/02;
G11B 20/12;
G11B 27/10;
Core:
more...
IPC-7:
G11B 27/10;
G11B 27/30;
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| ECLA Code: |
G11B19/02; G11B20/12D23; G11B27/10; S11B20/12D23; S11B220/12; S11B220/34;
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| U.S. Class: |
Current:
360/072.1;
360/078.04;
G9B/019.001;
G9B/020.028;
G9B/027.017;
Original:
360/072.1;
369/047;
369/078.04;
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| Field of Search: |
360/040,48,51,72.1,73.03,77.08,78.04,27,39,49,72.2,77.05,77.02,78.08,
369/032,33,41,47,50,56,57,59,53
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| Priority Number: |
| 1990-05-04 |
US1990000519497 |
| 1989-12-04 |
US1989000445753 |
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| Abstract: |
An apparatus for providing sector location pulses to a controller of a rotating disk data storage device having a counter clocked in proportion to the disk rotation rate and an accumulator for accumulating times to sectors on the disk. A comparator connected to the counter and the accumulator enables an accumulator clock for repetitive clocking of the accumulator at such times the contents of the accumulator do not exceed the contents of the counter. A sector location pulse generator connected to the comparator generates the controller pulses, when enabled, concurrently with the accumulator clock signals. A master reset generator resets the first counter and the accumulator each time an index location on the disk passes a transducer head used to read and write data to and from the disk and a partial reset generator resets the accumulator each time the transducer head is moved between tracks on the disk. The sector location pulse generator includes a flip-flop that is set following a partial reset signal to prevent sector location pulses from being generated following partial reset until the accumulator has accumulated the count in the counter.
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| Attorney, Agent or Firm: |
Heller, III, Edward P. ;
McCarthy, Bill D. ;
Watson, Louis W. ;
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| Primary / Asst. Examiners: |
Canney, Vincent P.; Garland, Steven R.
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| Maintenance Status: |
CC Certificate of Correction issued
View Certificate of Correction
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| INPADOC Legal Status: |
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