Patent US3810116A successfully refreshed from Google Patents.
US3810116A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Volatile memory protection
Assignee: Unisys Corp
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Filing: 1972-11-24
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Granted: 1974-05-07
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Expires: 1992-11-24
Abstract
Abstract A system for capturing the information stored in a volatile semiconductor memory upon electrical house-power loss is disclosed. The system includes a standby nonvolatile rotating memory-alternator combination which upon power failure utilizes its stored kinetic energy to continue rotating and thus generate the required electrical power to record in the nonvolatile memory the information held in the volatile memory.
Inventors
- 👤 L Prohofsky
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 17:00
CPC Classifications
G; G06; G06F; G06F11/00; G06F11/07; G06F11/14; G06F11/1402; G06F11/1415; G06F11/1441
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
197 words
A volatile memory protection system, comprising: a volatile memory; a rotatable nonvolatile memory; a rotatable electrical motor means; a rotatable electrical system-power generator means; rotatable shaft means mechanically connecting said motor means, said nonvolatile memory and said generator means for forming a rotatable motor-memory-generator combination; house-power means coupling electrical house-power to said motor means for rotating said motor-memory-generator combination at a normal rotating speed during normal system operation, said generator means being rotated to generate electrical systempower; means for coupling said system-power from said generator means to said volatile and nonvolatile memories; addressing means coupled to said volatile memory for transferring data information between said volatile memory and said addressing means during normal system operation using said system-power; means for coupling data information between said volatile and nonvolatile memories; first detector means responsively coupled to said motor-memorygenerator combination for generating a system-off signal indicating that said motor-memory-generator combination is rotating below said normal rotating speed; memory control means coupled to said volatile and nonvolatile memories, said memory control means responsively coupled to said first detector means for transferring data information from said volatile memory into said nonvolatile memory using said system-power when affected by said system-off signal.
Claim 2
Dependent Claim
197 words
A volatile memory protection system, comprising: a volatile memory; a rotatable nonvolatile memory; a rotatable electrical motor means; a rotatable electrical system-power generator means; rotatable shaft means mechanically connecting said motor means, said nonvolatile memory and said generator means for forming a rotatable motor-memory-generator combination; house-power means coupling electrical house-power to said motor means for rotating said motor-memory-generator combination at a normal rotating speed during normal system operation, said generator means being rotated to generate electrical systempower; means for coupling said system-power from said generator means to said volatile and nonvolatile memories; addressing means coupled to said volatile memory for transferring data information between said volatile memory and said addressing means during normal system operation using said system-power; means for coupling data information between said volatile and nonvolatile memories; first detector means responsively coupled to said motor-memorygenerator combination for generating a system-off signal indicating that said motor-memory-generator combination is rotating below said normal rotating speed; memory control means coupled to said volatile and nonvolatile memories, said memory control means responsively coupled to said first detector means for transferring data information from said volatile memory into said nonvolatile memory using said system-power when affected by said system-off signal.
Claim 3
Dependent Claim
22 words
The system of claim 1 in which said motor means, said nonvolatile memory and said generator means share a common rotatable shaft.
Claim 4
Dependent Claim
66 words
The system of claim 1 further including: second detector means responsively coupled to said motor-memory-generatOr combination for generating a system-on signal indicating that said motor-memory-generator combination is rotating at said normal rotating speed; and, said memory control means responsively coupled to said second detector means for transferring data information from said nonvolatile memory into said volatile memory using said system-power when affected by said system-on signal.
Claim 5
Dependent Claim
264 words
A volatile memory protection system, comprising: a volatile memory; a rotatable nonvolatile memory; a rotatable electrical motor means; a rotatable electrical system-power generator means; a common rotatable shaft means, said motor means, said nonvolatile memory and said generator means sharing said shaft means for forming a rotatable motor-memory-generator combination; house-power means coupling electrical house-power to said motor means for rotating said motor-memory-generator combination at a normal rotating speed during normal system operation, said generator means being rotated to generate electrical system-power; means for coupling said system-power from said generator means to said volatile and nonvolatile memories; means for coupling data information between said volatile and nonvolatile memories; addressing means coupled to said volatile memory for transferring data information between said volatile memory and said addressing means during normal system operation using said system-power; first detector means responsively coupled to said motor-memory-generator combination for generating a system-off signal indicating that said motor-memory-generator combination is rotating below said normal rotating speed; second detector means responsively coupled to said motor-memory-generator combination for generating a system-on signal indicating that said motor-memory-generator combination is again rotating at said normal rotating speed; memory control means coupled to said volatile and nonvolatile memories controlling the transfer of data information therebetween, said memory control means responsively coupled to said first and second detector means for transferring the data information stored in said volatile memory into said nonvolatile memory using said system-power when affected by said system-off signal and for transferring the data information stored in said nonvolatile memory back into said volatile memory using said system-power when affected by said system-on signal.
Claim 6
Dependent Claim
264 words
A volatile memory protection system, comprising: a volatile memory; a rotatable nonvolatile memory; a rotatable electrical motor means; a rotatable electrical system-power generator means; a common rotatable shaft means, said motor means, said nonvolatile memory and said generator means sharing said shaft means for forming a rotatable motor-memory-generator combination; house-power means coupling electrical house-power to said motor means for rotating said motor-memory-generator combination at a normal rotating speed during normal system operation, said generator means being rotated to generate electrical system-power; means for coupling said system-power from said generator means to said volatile and nonvolatile memories; means for coupling data information between said volatile and nonvolatile memories; addressing means coupled to said volatile memory for transferring data information between said volatile memory and said addressing means during normal system operation using said system-power; first detector means responsively coupled to said motor-memory-generator combination for generating a system-off signal indicating that said motor-memory-generator combination is rotating below said normal rotating speed; second detector means responsively coupled to said motor-memory-generator combination for generating a system-on signal indicating that said motor-memory-generator combination is again rotating at said normal rotating speed; memory control means coupled to said volatile and nonvolatile memories controlling the transfer of data information therebetween, said memory control means responsively coupled to said first and second detector means for transferring the data information stored in said volatile memory into said nonvolatile memory using said system-power when affected by said system-off signal and for transferring the data information stored in said nonvolatile memory back into said volatile memory using said system-power when affected by said system-on signal.
Claim 7
Dependent Claim
283 words
A volatile memory protection system, comprising: a volatile memory; a rotatable nonvolatile memory; a rotatable electrical motor means; a rotatable electrical system-power generator means; a common rotatable shaft means mechanically connecting said motor means, said nonvolatile memory and said generator means for forming a rotatable motor-memory-generator combination; house-power means coupling electrical house-power to said motor means for rotating said motor-memory-generator combination at a normal rotating speed during normal system operation, said generator means being rotated to generate electrical system-power; means for coupling said system-power from said generator means to said volatile and nonvolatile memories; means for coupling data information between said volatile and nonvolatile memories; addressing means coupled to said volatile memory for addressing data information that is to be read into said volatile memory from said addressing means only during normal system operation or that is to be read out of said volatile memory into said addressing means only during normal system operation; first detector means responsively coupled to said motor-memory-generator combination for generating a system-off signal indicating that said motor-memory-generator combination is rotating below said normal rotating speed; second detector means responsively coupled to said motor-memory-generator combination for generating a system-on signal indicating that said motor-memory-generator combination is rotating At said normal rotating speed; memory control means coupled to said volatile and nonvolatile memories and controlling the transfer of data information there-between, said memory control means responsively coupled to said first and second detector means for transferring data information stored in said volatile memory into said nonvolatile memory using said system-power when affected by said system-off signal and for transferring data information stored in said nonvolatile memory back into said volatile memory using said system-power when affected by said system-on signal.
Claim 8
Dependent Claim
283 words
A volatile memory protection system, comprising: a volatile memory; a rotatable nonvolatile memory; a rotatable electrical motor means; a rotatable electrical system-power generator means; a common rotatable shaft means mechanically connecting said motor means, said nonvolatile memory and said generator means for forming a rotatable motor-memory-generator combination; house-power means coupling electrical house-power to said motor means for rotating said motor-memory-generator combination at a normal rotating speed during normal system operation, said generator means being rotated to generate electrical system-power; means for coupling said system-power from said generator means to said volatile and nonvolatile memories; means for coupling data information between said volatile and nonvolatile memories; addressing means coupled to said volatile memory for addressing data information that is to be read into said volatile memory from said addressing means only during normal system operation or that is to be read out of said volatile memory into said addressing means only during normal system operation; first detector means responsively coupled to said motor-memory-generator combination for generating a system-off signal indicating that said motor-memory-generator combination is rotating below said normal rotating speed; second detector means responsively coupled to said motor-memory-generator combination for generating a system-on signal indicating that said motor-memory-generator combination is rotating At said normal rotating speed; memory control means coupled to said volatile and nonvolatile memories and controlling the transfer of data information there-between, said memory control means responsively coupled to said first and second detector means for transferring data information stored in said volatile memory into said nonvolatile memory using said system-power when affected by said system-off signal and for transferring data information stored in said nonvolatile memory back into said volatile memory using said system-power when affected by said system-on signal.
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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) | 1977-05-06 | 1977-11-05 | 1978-05-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-05-06 | 1981-11-05 | 1982-05-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-05-06 | 1985-11-05 | 1986-05-07 | $7700.00 | Window Closed / Lapsed |