US5881249A
Expired / Lapsed
US
⏱️ 0.0 years remaining
I/O bus
Assignee: Hewlett Packard Development Co LP
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Filing: 1995-07-31
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Granted: 1999-03-09
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Expires: 2015-07-31
Abstract
Abstract A new I/O bus which may be used in constructing a multiple drive library computer system which is repairable while the system remains online. The I/O bus generally operates under a SCSI-type protocol. The bus comprises a primary I/O bus, and a plurality of secondary I/O buses, pigtailed to said primary bus. The pigtailed I/O buses are longer than the 100 mm stubs which are sanctioned under a SCSI protocol.
Inventors
- 👤 Kelly J. Reasoner
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 19:15
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; G06F13/40; G06F13/4063; G06F13/409
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
62 words
An I/O bus, said bus comprising: a) a primary I/O bus; and b) a plurality of detachable secondary I/O buses pigtailed to said primary I/O bus; wherein each of said plurality of detachable secondary I/O buses has a length in excess of 200 mm, and the I/O bus as a whole, but for its length, is configured as a single-ended SCSI cable.
Claim 2
Dependent Claim
62 words
An I/O bus, said bus comprising: a) a primary I/O bus; and b) a plurality of detachable secondary I/O buses pigtailed to said primary I/O bus; wherein each of said plurality of detachable secondary I/O buses has a length in excess of 200 mm, and the I/O bus as a whole, but for its length, is configured as a single-ended SCSI cable.
Claim 3
Dependent Claim
22 words
An I/O bus as in claim 1, wherein said plurality of detachable secondary I/O buses are each approximately twelve inches in length.
Claim 4
Dependent Claim
22 words
An I/O bus as in claim 1, wherein said plurality of detachable secondary I/O buses are each approximately fourteen inches in length.
Claim 5
Dependent Claim
22 words
An I/O bus as in claim 1, wherein said I/O bus has a total cable length of approximately eleven feet, two inches.
Claim 6
Dependent Claim
22 words
An I/O bus as in claim 2, wherein said I/O bus has a total cable length of approximately eleven feet, two inches.
Claim 7
Dependent Claim
39 words
An I/O bus as in claim 1, wherein said primary I/O bus further comprises first and second ends, and said I/O bus further comprises a SCSI repeater board connected to one of said ends of said primary I/O bus.
Claim 8
Dependent Claim
92 words
An I/O bus, said bus comprising: a) first and second primary I/O buses; b) a first set of detachable secondary I/O buses, pigtailed to said first primary I/O bus; c) a second set of detachable secondary I/O buses, pigtailed to said second primary I/O bus; and d) means for interfacing between said first and second primary I/O buses; wherein each of said detachable secondary I/O buses has a length in excess of 200 mm, and the I/O bus as a whole, but for its length, is configured as a single-ended SCSI cable.
Claim 9
Dependent Claim
92 words
An I/O bus, said bus comprising: a) first and second primary I/O buses; b) a first set of detachable secondary I/O buses, pigtailed to said first primary I/O bus; c) a second set of detachable secondary I/O buses, pigtailed to said second primary I/O bus; and d) means for interfacing between said first and second primary I/O buses; wherein each of said detachable secondary I/O buses has a length in excess of 200 mm, and the I/O bus as a whole, but for its length, is configured as a single-ended SCSI cable.
Claim 10
Dependent Claim
21 words
An I/O bus as in claim 7, wherein each of said detachable secondary I/O buses is approximately fourteen inches in length.
Claim 11
Dependent Claim
65 words
An I/O bus as in claim 7, wherein each of said first and second primary I/O buses comprises first and second ends, and said I/O bus further comprises: a) a first SCSI repeater board connected to one of said ends of said first primary I/O bus; and b) a second SCSI repeater board connected to one of said ends of said second primary I/O bus.
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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) | 2002-03-08 | 2002-09-07 | 2003-03-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2006-03-08 | 2006-09-07 | 2007-03-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2010-03-08 | 2010-09-07 | 2011-03-09 | $7700.00 | Window Closed / Lapsed |