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US5644782A
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System with virtual update capable read-only memory
Assignee: Motorola Solutions Inc
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Filing: 1994-10-17
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Granted: 1997-07-01
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Expires: 2014-10-17
Abstract
Abstract A system having a virtual update capable read-only memory, includes a data storage system (270), and a device driver (272) which interfaces with the data storage system (270). The data storage system (270) includes a read-only memory device (274) which stores primary data, and an auxiliary memory device (276) which stores supplementary data reflecting updates to the primary data. The device driver (272) has a read handler which provides a response to a read request consisting of a combination of primary data from the read-only memory device (274) and supplementary data from the auxiliary memory device (276).
Inventors
- 👤 Anthony J. Yeates
- 👤 Michael R. Landis
- 👤 Jeffrey K. Berger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-09 21:00
CPC Classifications
G; G06; G06F; G06F16/00; G06F16/20; G06F16/25; H; H04; H04L; H04L9/00; H04L9/40
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
113 words
A system having a virtual update capable read-only memory, comprising: a data storage system, including: a read-only memory device having primary data; an auxiliary memory device having supplementary data reflecting updates to the primary data; and a device driver interfacing with the data storage system, including a read handler, being responsive to a read request, to provide a read response comprising a combination of primary data from the read-only memory device and supplementary data from the auxiliary memory device; wherein: the read-only memory device comprises a removable write-protected media having an identifier; and the auxiliary memory device comprises a storage area selectable by identification corresponding to the identifier for the removable write-protected media.
Claim 2
Independent Claim
113 words
A system having a virtual update capable read-only memory, comprising: a data storage system, including: a read-only memory device having primary data; an auxiliary memory device having supplementary data reflecting updates to the primary data; and a device driver interfacing with the data storage system, including a read handler, being responsive to a read request, to provide a read response comprising a combination of primary data from the read-only memory device and supplementary data from the auxiliary memory device; wherein: the read-only memory device comprises a removable write-protected media having an identifier; and the auxiliary memory device comprises a storage area selectable by identification corresponding to the identifier for the removable write-protected media.
Claim 3
Dependent Claim
41 words
The system of claim 1, wherein the device driver includes a write handler, being responsive to a write request, to generate supplementary data reflecting an update to the primary data, and to store the supplementary data on the auxiliary memory device.
Claim 4
Dependent Claim
13 words
The system of claim 1, wherein the read-only memory device comprises a CD-ROM.
Claim 5
Dependent Claim
15 words
The system of claim 1, wherein the auxiliary memory device comprises a computer hard disk.
Claim 6
Independent Claim
114 words
A system having a virtual update capable read-only memory, comprising: a data storage system, including: a read-only memory device having primary data; an auxiliary memory device having supplementary data reflecting updates to the primary data; and a device driver interfacing with the data storage system, including a read handler, being responsive to a read request, to provide a read response comprising a combination of primary data from the read-only memory device and supplementary data from the auxiliary memory device; wherein: the read-only memory device comprises a plurality of write-protected media; and the auxiliary memory device comprises a plurality of storage areas each having supplementary data corresponding to one of the plurality of write-protected media.
Claim 7
Independent Claim
114 words
A system having a virtual update capable read-only memory, comprising: a data storage system, including: a read-only memory device having primary data; an auxiliary memory device having supplementary data reflecting updates to the primary data; and a device driver interfacing with the data storage system, including a read handler, being responsive to a read request, to provide a read response comprising a combination of primary data from the read-only memory device and supplementary data from the auxiliary memory device; wherein: the read-only memory device comprises a plurality of write-protected media; and the auxiliary memory device comprises a plurality of storage areas each having supplementary data corresponding to one of the plurality of write-protected media.
Claim 8
Dependent Claim
120 words
A computing device having a data retrieval system, comprising: a data storage system, including: a plurality of removable read-only memory devices each having published data thereon; a read-write memory device having a plurality of selectable storage areas, each storage area corresponding to one of said plurality of removable read-only memory devices, each storage area having supplementary data reflecting updates to the published data of a corresponding read-only memory device; and a device driver interfacing with the data storage system, including a read handler, being responsive to a read request, to provide a read response comprising a combination of supplementary data from a selectable storage area of the read-write memory device, and published data from a corresponding removable read-only memory device.
Claim 9
Dependent Claim
120 words
A computing device having a data retrieval system, comprising: a data storage system, including: a plurality of removable read-only memory devices each having published data thereon; a read-write memory device having a plurality of selectable storage areas, each storage area corresponding to one of said plurality of removable read-only memory devices, each storage area having supplementary data reflecting updates to the published data of a corresponding read-only memory device; and a device driver interfacing with the data storage system, including a read handler, being responsive to a read request, to provide a read response comprising a combination of supplementary data from a selectable storage area of the read-write memory device, and published data from a corresponding removable read-only memory device.
Claim 10
Dependent Claim
34 words
The computing device of claim 6, wherein the device driver further comprises a write handler, being responsive to a write request, to store supplementary data on a storage area of the read-write memory device.
Claim 11
Dependent Claim
40 words
The computing device of claim 7, further comprising: means for requesting transmission of changes data reflecting updates to the published data of a particular read-only memory device; and means for receiving the changes data and for generating corresponding supplementary data.
Claim 12
Independent Claim
104 words
A method of supporting virtual updates to read-only memory, comprising the steps of: associating a particular identifier with a read-only memory device having primary data stored thereon; selecting a storage area on a read-write memory device from among a plurality of storage areas corresponding to a plurality of read-only memory devices, using the particular identifier, which selected storage area stores supplementary data reflecting updates to the primary data on the read-only memory device; and processing read requests to the read-only memory device, by combining primary data from the read-only memory device and supplementary data from the selected storage area to form a read response.
Claim 13
Independent Claim
104 words
A method of supporting virtual updates to read-only memory, comprising the steps of: associating a particular identifier with a read-only memory device having primary data stored thereon; selecting a storage area on a read-write memory device from among a plurality of storage areas corresponding to a plurality of read-only memory devices, using the particular identifier, which selected storage area stores supplementary data reflecting updates to the primary data on the read-only memory device; and processing read requests to the read-only memory device, by combining primary data from the read-only memory device and supplementary data from the selected storage area to form a read response.
Claim 14
Dependent Claim
16 words
The method of claim 9, wherein the supplementary data comprises data received from an over-the-air transmission.
Claim 15
Dependent Claim
13 words
The method of claim 9, wherein the read-only memory device comprises a CD-ROM.
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) | 2000-06-30 | 2000-12-30 | 2001-07-01 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-06-30 | 2004-12-30 | 2005-07-01 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-06-30 | 2008-12-30 | 2009-07-01 | $7700.00 | Window Closed / Lapsed |