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US5537537A Expired / Lapsed US ⏱️ 0.0 years remaining

Burn-in diagnostic technique for a disc driving apparatus

Assignee: Sony Corp
•
Filing: 1995-07-26
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Granted: 1996-07-16
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Expires: 2015-07-26
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Abstract

Abstract A hard disc drive includes a self-diagnostic program which is stored either in ROM, on the magnetic disc or the like. This program enables the disc drive to be placed in an environment wherein a predetermined temperature is maintained and a so called "burn in" diagnostic carried out without the need for host computers and interface cabling. The outcome of the diagnostic can be recorded on a suitable media within the drive for later accessing.

Inventors

  • 👤 Daisuke Fujikawa
  • 👤 Takenori Sonoda
  • 👤 Kenichi Sakai

Bibliographic Details

Application Number —
Jurisdiction US
Data Source google_patents
Last Synchronized 2026-11-08 23:49
CPC Classifications
G; G11; G11B; G11B20/00; G11B20/10; G11B5/00; G11B5/012; G11B19/00; G11B19/02; G11B19/12; G11B20/18; G11B20/1816

Claims Analysis

Total Claims: 12
Claim 1
Independent Claim 190 words
A disc driving apparatus comprising: storage means for storage of a self-diagnostic program which is adapted for execution in a burn-in environment, said storage means being disposed within a housing which encloses said disc driving apparatus; a first memory disposed within said housing for storing mode data representing a normal mode or a burn-in mode; self-diagnostic program executing means for executing said self-diagnostic program stored in said storage means, said self-diagnostic program executing means being disposed within said housing; control means for activating said self-diagnostic program executing means only when the mode data stored in said first memory represent s the burn-in mode, and for controlling said first memory to change the mode data stored in said first memory to represent the normal mode; and a second memory disposed in said housing for storing results of an execution of said self-diagnostic program from said self-diagnostic program executing means; wherein said self-executing diagnostic program executing means executes said self-diagnostic program based on burn-in parameters which determine the operation of said self-diagnostic program; and wherein said burn-in parameters determine test time, test dwell time, a number of tests, and a read/write method.
Claim 2
Dependent Claim 190 words
A disc driving apparatus comprising: storage means for storage of a self-diagnostic program which is adapted for execution in a burn-in environment, said storage means being disposed within a housing which encloses said disc driving apparatus; a first memory disposed within said housing for storing mode data representing a normal mode or a burn-in mode; self-diagnostic program executing means for executing said self-diagnostic program stored in said storage means, said self-diagnostic program executing means being disposed within said housing; control means for activating said self-diagnostic program executing means only when the mode data stored in said first memory represent s the burn-in mode, and for controlling said first memory to change the mode data stored in said first memory to represent the normal mode; and a second memory disposed in said housing for storing results of an execution of said self-diagnostic program from said self-diagnostic program executing means; wherein said self-executing diagnostic program executing means executes said self-diagnostic program based on burn-in parameters which determine the operation of said self-diagnostic program; and wherein said burn-in parameters determine test time, test dwell time, a number of tests, and a read/write method.
Claim 3
Dependent Claim 18 words
A disc driving apparatus according to claim 1, wherein said burn-in parameters are stored in said first memory.
Claim 4
Dependent Claim 23 words
A disc driving apparatus according to claim 1, wherein said burn-in parameters are stored in an electrically erasable and programmable read only memory.
Claim 5
Dependent Claim 22 words
A disc driving apparatus according to claim 1, wherein said burn-in parameters comprise default parameters set by said self-diagnostic program executing means.
Claim 6
Dependent Claim 17 words
A disc driving apparatus according to claim 1, wherein said storage means comprises a read only memory.
Claim 7
Dependent Claim 20 words
A disc driving apparatus according to claim 1, wherein said first memory comprises a maintenance cylinder of a magnetic disc.
Claim 8
Dependent Claim 17 words
A disc driving apparatus according to claim 1, wherein said second memory comprises a random access memory.
Claim 9
Dependent Claim 50 words
A disc driving apparatus according to claim 1, wherein said first memory comprises a maintenance cylinder of a magnetic disc and said second memory comprises a random access memory, and wherein said control means copying said results stored in said second memory to said maintenance cylinder of said magnetic disc.
Claim 10
Dependent Claim 27 words
A disc driving apparatus according to claim 1, wherein upon completion of said self-diagnostic program, said control means changes said mode data to represent said normal mode.
Claim 11
Dependent Claim 19 words
A disc driving apparatus according to claim 1, wherein said storage means comprises a portion of a magnetic disc.
Claim 12
Dependent Claim 31 words
A disc driving apparatus according to claim 10, further comprising a read only memory which stores a loader program for reading said self-diagnostic program from said portion of said magnetic disc.

References Cited (Backward Citations)

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US4326290A Cited
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USPTO Annuity & Maintenance Windows

Annuity Stage Window Opens Payment Deadline Surcharge Period Until Estimated Fee Status
3.5 Years (Year 4) 1999-07-16 2000-01-15 2000-07-16 $2000.00 Window Closed / Lapsed
7.5 Years (Year 8) 2003-07-16 2004-01-15 2004-07-16 $3760.00 Window Closed / Lapsed
11.5 Years (Year 12) 2007-07-16 2008-01-15 2008-07-16 $7700.00 Window Closed / Lapsed

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