US5822547A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method and apparatus for providing a portable computer with hot pluggable modular bays
Assignee: Texas Instruments Inc
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Filing: 1996-05-31
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Granted: 1998-10-13
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Expires: 2016-05-31
Abstract
Abstract A computer system 10, such as a notebook computer, uses a modular bay 12 to receive optional devices 14. Buffer circuits 36 selectively isolate the device 14 in the modular bay from respective buses 34. An SMI handler, or similar executable routine, recognizes events which affect the modular bay 12 (such as insertion or removal of a device 14 from the modular bay 12), and performs the necessary routines to re-enumerate the system so that the device 14 is properly connected to its bus 34 and that the system software is aware of the hardware connected to computer 10.
Inventors
- 👤 Shannon C. Boesch
- 👤 Charles L. Haley
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 01:27
CPC Classifications
G; G06; G06F; G06F13/00; G06F13/38; G06F13/40; G06F13/4063; G06F13/4068; G06F13/4081; G06F13/10
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
105 words
A computer system comprising: processing circuitry; a connector for receiving a device; a latching means for securing said device in said system; a switch responsive to said latching means; one or more buses coupled to said processing circuitry; buffer circuits associated with respective buses for selectively coupling a respective bus to said connector responsive to a control signal state of generating an interrupt to said processing circuitry from said receiving device; and logic responsive to said switch for generating control signals to each buffer circuit to couple said connector to one of said buses, wherein said processing circuitry re-enumerates the system responsive to said interrupt.
Claim 2
Dependent Claim
105 words
A computer system comprising: processing circuitry; a connector for receiving a device; a latching means for securing said device in said system; a switch responsive to said latching means; one or more buses coupled to said processing circuitry; buffer circuits associated with respective buses for selectively coupling a respective bus to said connector responsive to a control signal state of generating an interrupt to said processing circuitry from said receiving device; and logic responsive to said switch for generating control signals to each buffer circuit to couple said connector to one of said buses, wherein said processing circuitry re-enumerates the system responsive to said interrupt.
Claim 3
Dependent Claim
33 words
The computer system of claim 1, wherein said device provides a signal identifying said device and said control circuit selectively isolates one or more of said busses in response to said identifying signal.
Claim 4
Dependent Claim
22 words
The computer system of claim 1 and further comprising circuitry associated with each device for providing an identification signal for the device.
Claim 5
Dependent Claim
23 words
The computer system of claim 1 and further comprising circuitry for generating an interrupt responsive to connection of a device to said connector.
Claim 6
Dependent Claim
16 words
The computer system of claim 1 and further comprising circuitry for applying power to said device.
Claim 7
Dependent Claim
18 words
The computer system of claim 3 wherein said logic generates said control signals responsive to said identification signal.
Claim 8
Independent Claim
71 words
A method of uncoupling a removable device to processing circuitry in a computer, comprising the steps of: detecting a physical disconnection of a device from the computer; generating an interrupt to said processing circuitry in response to said physical disconnection of said device; detecting a bus associated with the disconnected device; disabling a buffer disposed between said associated bus and said disconnected device; and re-enumerating the system responsive to said interrupt.
Claim 9
Independent Claim
71 words
A method of uncoupling a removable device to processing circuitry in a computer, comprising the steps of: detecting a physical disconnection of a device from the computer; generating an interrupt to said processing circuitry in response to said physical disconnection of said device; detecting a bus associated with the disconnected device; disabling a buffer disposed between said associated bus and said disconnected device; and re-enumerating the system responsive to said interrupt.
Claim 10
Dependent Claim
24 words
The method of claim 7 wherein said step of detecting a bus comprises the step of detecting an identification signal from said connected device.
Claim 11
Dependent Claim
29 words
The method of claim 7 wherein the step of detecting a physical disconnection of a device further comprises detecting the unlatching of the device securing means by the user.
References Cited (Backward Citations)
US5157771A
Cited
US5041924A
Cited
US5305180A
Cited
US5483419A
Cited
EP0552873A1
Cited
US5530302A
Cited
US5598537A
Cited
US5579491A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-10-12 | 2002-04-13 | 2002-10-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-10-12 | 2006-04-13 | 2006-10-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-10-12 | 2010-04-13 | 2010-10-13 | $7700.00 | Window Closed / Lapsed |