US5805904A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Power control circuit of at least one computer expansion slot
Assignee: Transpacific Avartar LLC
•
Filing: 1996-07-05
•
Granted: 1998-09-08
•
Expires: 2016-07-05
Abstract
Abstract A power control circuit for at least one expansion slot has a latching means for receiving and storing data from the system and a means for outputting a signal corresponding to the data provided by a control signal, a power controller for receiving the control signal from the latching means and for outputting a control power on or power off signal corresponding to the signal from the latching means and at least one expansion slot for which the power is supplied or denied according to the on or off signal from the power controller.
Inventors
- 👤 Sung-Ho Jung
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 17:31
CPC Classifications
G; G06; G06F; G06F1/00; G06F1/26
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
166 words
A power control circuit for controlling power provided to expansion slots for a computer system comprising: a power source; a plurality of expansion slots, attached to the computer system; and latching means for receiving and storing data from the computer system and outputting a plurality of control signals corresponding to the data received, each of the plurality of control signals indicating a power-off state or a power-on state for a corresponding expansion slot of the plurality of expansion slots; a power controller, connected between the power source and the plurality of expansion slots and controlled by the plurality of control signals, wherein the power controller connects a chosen expansion slot of the plurality of expansion slots to the power source when a corresponding control signal of the plurality of control signals indicates a power-on state, and disconnects the chosen expansion slot of the plurality of expansion slots from the power source when the corresponding control signal of the plurality of control signals indicates a power-off state.
Claim 2
Dependent Claim
166 words
A power control circuit for controlling power provided to expansion slots for a computer system comprising: a power source; a plurality of expansion slots, attached to the computer system; and latching means for receiving and storing data from the computer system and outputting a plurality of control signals corresponding to the data received, each of the plurality of control signals indicating a power-off state or a power-on state for a corresponding expansion slot of the plurality of expansion slots; a power controller, connected between the power source and the plurality of expansion slots and controlled by the plurality of control signals, wherein the power controller connects a chosen expansion slot of the plurality of expansion slots to the power source when a corresponding control signal of the plurality of control signals indicates a power-on state, and disconnects the chosen expansion slot of the plurality of expansion slots from the power source when the corresponding control signal of the plurality of control signals indicates a power-off state.
Claim 3
Dependent Claim
74 words
The power control circuit as defined in claim 1, wherein the latching means comprises: at least one NOR gate for receiving a port address signal and an input-output write signal from the computer system and a means for outputting a latching signal corresponding to the port address signal and the input-output write signal; and a latching buffer for storing data transmitted from the system and a means for outputting the plurality of control signals.
Claim 4
Dependent Claim
94 words
The power control circuit as defined in claim 1, wherein the power controller comprises: a plurality of field effect transistors each having a gate, a source, and a drain, wherein for each of the plurality of field effect transistors, one of the plurality of control signals from the latching buffer enters the gate, and wherein the source of each of the plurality of field effect transistors is connected to the power source, and the drain of each of the plurality of field effect transistors is connected to one of the plurality of expansion slots.
Claim 5
Independent Claim
146 words
A method for controlling power to a plurality of expansion slots of a computer system, the method comprising the steps of: receiving and storing data from the computer system in a latching means; outputting a plurality of control signals corresponding to the data received by the latching means; receiving the plurality of control signals at a power controller, from the latching means, each of the plurality of control signals indicating a power-on or a power-off state for a corresponding expansion slot; enabling the supply of a power source voltage to a first set of the plurality of expansion slots corresponding to those of the plurality of control signals that indicate a power-on state; and disabling the supply of the power source voltage to a second set of the plurality of expansion slots corresponding to those of the plurality of control signals that indicate a power-off state.
Claim 6
Independent Claim
146 words
A method for controlling power to a plurality of expansion slots of a computer system, the method comprising the steps of: receiving and storing data from the computer system in a latching means; outputting a plurality of control signals corresponding to the data received by the latching means; receiving the plurality of control signals at a power controller, from the latching means, each of the plurality of control signals indicating a power-on or a power-off state for a corresponding expansion slot; enabling the supply of a power source voltage to a first set of the plurality of expansion slots corresponding to those of the plurality of control signals that indicate a power-on state; and disabling the supply of the power source voltage to a second set of the plurality of expansion slots corresponding to those of the plurality of control signals that indicate a power-off state.
Claim 7
Dependent Claim
43 words
The method of controlling power as in claim 4, further including the steps of: receiving a port address signal and an input-output write signal from the computer system; and outputting a signal corresponding to the port address signal and the input-output write signal.
Claim 8
Dependent Claim
38 words
The method of controlling power as recited in claim 4, wherein the first set of expansion slots includes all expansion slots that are filled and the second set of expansion slots includes all expansion slots that are empty.
References Cited (Backward Citations)
US4051326A
Cited
US5440748A
Cited
US5305459A
Cited
US5475271A
Cited
US5396636A
Cited
US5339445A
Cited
US5652892A
Cited
US5613130A
Cited
US5581712A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2001-09-07 | 2002-03-09 | 2002-09-08 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2005-09-07 | 2006-03-09 | 2006-09-08 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2009-09-07 | 2010-03-09 | 2010-09-08 | $7700.00 | Window Closed / Lapsed |