US4908793A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Storage apparatus including a semiconductor memory and a disk drive
Assignee: Hitachi Ltd
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Filing: 1987-10-08
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Granted: 1990-03-13
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Expires: 2007-10-08
Abstract
Abstract An information recording and reproducing apparatus comprises a 31/2 inch hard disk drive, a semiconductor memory connected to the 31/2 inch hard disk drive for exchanging data, and a battery used to trasfer data in the semiconductor memory to the 31/2 inch hard disk drive when a power supply is shut off, all of which are accommodated in a housing of the same outer dimension as that of a 51/4 inch floppy disk drive. The information recording and reproducing apparatus is replaceable with a conventional floppy disk drive and can attain high speed accessing.
Inventors
- 👤 Hirotsugu Yamagata
- 👤 Takafumi Oka
- 👤 Masafumi Nozawa
- 👤 Shinichi Kawada
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 05:55
CPC Classifications
G; G11; G11B; G11B33/00; G11B33/12; G11B33/121; G11B20/00; G11B20/10; G11B31/00; G11C; G11C14/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
119 words
A storage apparatus comprising: a housing having the approximate dimensions of 82.5 mm in height, 146 mm in width, and 203 mm in length; a 1/2 inch disk drive accommodated in said housing; a semiconductor memory accommodated in said housing and connected to said disk drive; a control circuit to control said disk drive and semiconductor memory accommodated in said housing; and a battery accommodated in said housing for supplying power to said storage apparatus after a power supply of said storage apparatus has been shut off or fails, so as to provide uninterrupted supply of power to said storage apparatus and enable data stored in said semiconductor memory to be transferred to a disk in said disk drive.
Claim 2
Dependent Claim
119 words
A storage apparatus comprising: a housing having the approximate dimensions of 82.5 mm in height, 146 mm in width, and 203 mm in length; a 1/2 inch disk drive accommodated in said housing; a semiconductor memory accommodated in said housing and connected to said disk drive; a control circuit to control said disk drive and semiconductor memory accommodated in said housing; and a battery accommodated in said housing for supplying power to said storage apparatus after a power supply of said storage apparatus has been shut off or fails, so as to provide uninterrupted supply of power to said storage apparatus and enable data stored in said semiconductor memory to be transferred to a disk in said disk drive.
Claim 3
Dependent Claim
37 words
A storage apparatus according to claim 1 further comprising power supply means accommodated in said housing for generating the power to be supplied to said storage apparatus, and said battery is charged by said power supply means.
Claim 4
Dependent Claim
32 words
A storage apparatus according to claim 1 wherein said battery is arranged at a position in said housing which position allows said battery to be handled from outside of said storage apparatus.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1993-03-12 | 1993-09-11 | 1994-03-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-03-12 | 1997-09-11 | 1998-03-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-03-12 | 2001-09-11 | 2002-03-13 | $7700.00 | Window Closed / Lapsed |