System and method for delaying a wake-up signal
First Claim
1. In a portable personal computer system, which includes a central processing unit, a keyboard controller, an on/off switch and a power supply, the improvement comprising:
- means responsive to a plurality of control signals for automatically disabling the power to said computer system;
means responsive to a plurality of control signals for automatically enabling the power to said computer system; and
means responsive to said enabling means for generating a first control signal to enable said power supply in said computer system to supply power to the computer system for a predetermined amount of time within which time a keyboard control signal is generated to enable the keyboard controller to take control of said disabling means from said first control signal.
8 Assignments
0 Petitions
Accused Products
Abstract
A pen-based personal computer includes a main power switch for initial power-up. The pen-based portable personal computer includes a keyboard controller which controls power management of the battery and places the pen-based portable personal computer in a hibernate state after a predetermined period of inactivity. The system can be awakened from the hibernate state by contact of a passive stylus with the digitizer panel. In order to place the power management of the battery under the control of the keyboard controller, a wake-up signal is generated at power-up just long enough to enable the keyboard controller to take control of the power management of the battery.
133 Citations
18 Claims
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1. In a portable personal computer system, which includes a central processing unit, a keyboard controller, an on/off switch and a power supply, the improvement comprising:
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means responsive to a plurality of control signals for automatically disabling the power to said computer system; means responsive to a plurality of control signals for automatically enabling the power to said computer system; and means responsive to said enabling means for generating a first control signal to enable said power supply in said computer system to supply power to the computer system for a predetermined amount of time within which time a keyboard control signal is generated to enable the keyboard controller to take control of said disabling means from said first control signal. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A computer system comprising:
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a keyboard controller configured to control a shutdown signal by way of a keyboard shutdown signal; a signal controller configured to also control said shutdown signal; and a power supply responsive to said shutdown signal wherein said power supply is configured to be enabled temporarily by said signal controller during which time control of said shutdown signal is transferred from said signal controller to said keyboard controller. - View Dependent Claims (8, 9, 10, 11)
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12. A computer system comprising:
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a keyboard controller; a power supply; a power supply controller for controlling said power supply for a predetermined time period; and a power supply control circuit configured to disable during initial boot-up of said computer system said power supply controller from controlling said power supply during said predetermined period and to enable said keyboard controller to take control of said power supply. - View Dependent Claims (13, 14)
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15. In a computer system which includes a remote host computer having a CPU, a display unit for displaying images, a power supply and a storage device for running and storing programs, the improvement comprising:
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a wireless interface device to wirelessly communicate and interface with said remote host computer for controlling and accessing said remote host computer and said programs on said remote host computer, said interface device including a digitizer to accept input using a passive stylus and a display device for displaying any images that can be displayed on said display unit and for displaying locally generated images; means coupled to said wireless interface device to enable said interface device to enter a suspend state responsive to a predetermined condition, said enabling means including a keyboard controller operative to control a shutdown signal; means for waking up said interface device from said suspend state by way of a touch by said passive stylus on said digitizer; and means responsive to said touch by said passive stylus for generating a first control signal to control said shutdown signal to enable the power supply to supply power to the computer system for a predetermined amount of time within which time a keyboard control signal is generated to enable said keyboard controller to take control of said shutdown signal from said first control signal to prevent said computer from shutting down. - View Dependent Claims (16, 17, 18)
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Specification