US3803554A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Apparatus for addressing an electronic data storage
Assignee: International Business Machines Corp
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Filing: 1972-04-27
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Granted: 1974-04-09
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Expires: 1992-04-27
Abstract
Abstract The disclosure describes a scheme for addressing an electronic data storage by dividing the storage into a predetermined number of blocks and powering only those blocks desired to be accessed. Block selection is accomplished by decoding several of the input signals into block selecting signals at the storage address register (SAR). This decoding may be accomplished by a particular connection of driver circuits in the storage address register (SAR) resulting in minimal added hardware and no additional time delay. The block selecting signals and the remaining input signals are ANDed, thereby accessing address lines only in selected blocks of the electronic data storage resulting in greatly reduced power requirements and heat dissipation.
Inventors
- 👤 D Bock
- 👤 W Haug
- 👤 U Olderdissen
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-23 02:37
CPC Classifications
G; G11; G11C; G11C8/00; G11C8/12; G06; G06F; G06F12/00; G06F12/02; G06F12/06; H; H03; H03M; H03M7/00
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
206 words
Apparatus for addressing an electronic data storage subdivided into a plurality of blocks of address locations, each said plurality of blocks including a plurality of discrete address locations comprising: input means having a plurality of input terminals for receiving an input signal pattern indicatiVe of a particular address to be selected; block selecting means responsive to the input signal on one or more of said input terminals, for deriving a signal indicative of one of a plurality of blocks of said electronic data storage desired to be selected; a plurality of coincidence circuit means, each providing an output signal only in response to a signal from both said input means and said block selecting means; and a plurality of driving circuit means, each responsive to the output of one of said coincidence circuit means, and each adapted for driving particularly selected address lines of said electronic data storage, those ones of said plurality of driving circuit means receiving a signal from one of said plurality of coincidence circuit means providing a driving signal to said particularly selected address lines, thereby powering only said particularly selected address lines; and a plurality of storage modules including decoding means responsive to the signals on said particularly selected address lines.
Claim 2
Dependent Claim
206 words
Apparatus for addressing an electronic data storage subdivided into a plurality of blocks of address locations, each said plurality of blocks including a plurality of discrete address locations comprising: input means having a plurality of input terminals for receiving an input signal pattern indicatiVe of a particular address to be selected; block selecting means responsive to the input signal on one or more of said input terminals, for deriving a signal indicative of one of a plurality of blocks of said electronic data storage desired to be selected; a plurality of coincidence circuit means, each providing an output signal only in response to a signal from both said input means and said block selecting means; and a plurality of driving circuit means, each responsive to the output of one of said coincidence circuit means, and each adapted for driving particularly selected address lines of said electronic data storage, those ones of said plurality of driving circuit means receiving a signal from one of said plurality of coincidence circuit means providing a driving signal to said particularly selected address lines, thereby powering only said particularly selected address lines; and a plurality of storage modules including decoding means responsive to the signals on said particularly selected address lines.
Claim 3
Dependent Claim
17 words
Apparatus as in claim 1 in which said block selecting means forms part of said input means.
Claim 4
Dependent Claim
31 words
Apparatus as in claim 1 in which said block selecting means provides a signal indicative of one of a plurality of sections of said electronic data storage without additional time delay.
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) | 1977-04-08 | 1977-10-08 | 1978-04-09 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-08 | 1981-10-08 | 1982-04-09 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-08 | 1985-10-08 | 1986-04-09 | $7700.00 | Window Closed / Lapsed |