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| Number | Title | Issue Date |
| 5560024 | Computer power management system A low power management system including both hardware and software is provided for a battery powered portable computer. The low power management system powers down various sections of the computer when they are not used. The low power management system is... | 09/24/1996 |
| 5550985 | Special purpose computer for demonstrating peripheral devices such as printers in which power is withdrawn from the port connection of the peripheral device A special purpose computer is used to demonstrate the operation of a computer peripheral such as a laser printer. The special purpose computer is connected to a data port of the computer peripheral. In the preferred configuration, the special purpose comp... | 08/27/1996 |
| 5537650 | Method and apparatus for power management in video subsystems Video subsystem power savings are achieved by shutting off power to unused subcircuits during blanking. Digital circuitry within the video subsystem not used during blanking is shut-down by turning off the clock thereto. Analog circuitry within a digital ... | 07/16/1996 |
| 5535398 | Method and apparatus for providing both power and control by way of an integrated circuit terminal A method and apparatus for providing both power and control by way of an integrated circuit terminal (22). In one form, a clock source (12) supplies a periodic signal to a phase lock loop circuit (32) and to a multiplexer (34). The output of the phase loc... | 07/09/1996 |
| 5530932 | Cache coherent multiprocessing computer system with reduced power operating features A multiprocessing system maintains cache coherency during a reduced power mode of operation. The multiprocessing system has a first and a second processor coupled to the bus to perform data transactions with the main memory. During the reduced power mode ... | 06/25/1996 |
| 5524248 | Random access memory power management system Method and apparatus for power management of a RAM subsystem of a computer. Blocks of data stored at various addresses throughout the RAM subsystem are packed into unallocated memory space at the lowest possible physical location within the RAM subsystem ... | 06/04/1996 |
| 5515539 | Apparatus and method for reducing power consumption by peripheral devices after downloading a program therefrom A microcomputer system of the present invention, includes for reducing power consumption therein, an internal memory device in a processor device and a buffer, the buffer further including therein disconnection means for connection and disconnection with ... | 05/07/1996 |
| 5511205 | System for distributed power management in portable computers A system and method for managing power in a portable, pen-based notebook computer. The system and method provides for minimizing power consumption by collecting and interpreting power related data of various processing elements while hiding many of the de... | 04/23/1996 |
| 5504907 | Power management system with adaptive control parameters for portable computer A system for automatically adapting the power conservation functions of a personal computer (PC) to the work patterns of any user. A power control system of the PC monitors activity of I/O devices and if upon the elapse of a first time interval a particul... | 04/02/1996 |
| 5493670 | Adaptive disk spin-down method for managing the power distributed to a disk drive in a laptop computer A method for managing the power consumed by a disk drive in a portable laptop computer which includes spinning the disk up during period when the computer apparatus is in an active or idle mode, creating a threshold to determine when to spin down the disk... | 02/20/1996 |
| 5486726 | Power-supply control system of peripheral equipment of computer The present invention discloses a power supply control system for the peripheral equipment of a computer which generates a signal for automatically cutting off the input power supplied to the peripheral equipment after a user has stop working on a compute... | 01/23/1996 |
| 5481732 | CRT monitor power control unit There is disclosed a control unit for the electrical power supply to a CRT monitor used with a personal computer. The unit has electrical power input and output connections, at least one user input for a computer peripheral such as a keyboard or a mouse a... | 01/02/1996 |
| 5481299 | Power saving device for video screen A system for saving power used by a video screen including a comparator comparing the red, green blue signals to a reference signal and when all of these signals fall below a reference signal and stay below the reference signal for a preset period of time... | 01/02/1996 |
| 5481733 | Method for managing the power distributed to a disk drive in a laptop computer A method for managing the power consumed by a disk drive in a portable laptop computer which includes quantizing predetermined periods of disk inactivity into states which are stored in a state table in memory. Based upon a history of disk accesses by a u... | 01/02/1996 |
| 5477476 | Power-conservation system for computer peripherals A power conservation system (PCS) includes a data handler, a controller and a power switch. The data handler is located between a host network and a network printer, while the power switch is between an AC power source and the printer's power input. The P... | 12/19/1995 |
| 5465366 | Power control module for computer monitors A self-contained power control module for controlling power to the peripheral output devices of an electronic data processing system. The power control module automatically interrupts power to the peripheral output devices of the system after a predetermi... | 11/07/1995 |
| 5412809 | Disk drive power control circuit and method A disk drive control circuit and method controls electric power consumption in a disk drive so that a computer system such as a laptop computer can conserve power and as a result can dramatically reduce the effective life of batteries employed as a power ... | 05/02/1995 |
| 5412585 | Ultrasonic control disk drive system The invention also known as "Disk-saver" employs a novel method of controlling the power to the hard disk drive of an electronic digital computer. A "Terminate and Stay Resident" (TSR) program is executed in the electronic digital computer which provides ... | 05/02/1995 |
| 5408668 | Method and apparatus for controlling the provision of power to computer peripherals The provision of power to a peripheral of a computer system is controlled by first receiving input signals from an input source, such as a keyboard, mouse, printer port, or an occupancy sensor. The input signals are then processed to determine whether pow... | 04/18/1995 |
| 5404541 | Operation monitoring and controlling apparatus for computer system An operation monitoring and controlling apparatus for a computer system consisting of a central processing unit, input/output devices, terminals, and a service processor connected to the central processing unit, and including a supervising device for supe... | 04/04/1995 |
| 5404546 | BIOS independent power management for portable computer Method and apparatus for effecting BIOS independent power management of a personal computer system having a processor complex connected via a system bus to at least one I/O device capable of operating in a reduced power consumption state. A power control ... | 04/04/1995 |
| 5392437 | Method and apparatus for independently stopping and restarting functional units A mechanism for powering down a functional unit on an integrated circuit having multiple functional units. Some of the functional units are clocked independently of each other. A method and mechanism for indicating to the functional unit whether it is req... | 02/21/1995 |
| 5392438 | Computer system with control unit for controlling power supply to storage unit A computer system is provided with both an auto power off mode and a resume mode. In the computer system, the motor off command for an HDD is kept effective from the time when the system is turned on to the time when the HDD is accessed. During the interv... | 02/21/1995 |
| 5390333 | Switch array power reduction apparatus In a multinode switch array, the maximum number of nodes that can be passing data from input to output lead can be no greater than the number of output leads in the array. Thus, the remaining nodes, while not performing a useful switch function, when impl... | 02/14/1995 |
| 5390334 | Workstation power management by page placement control A power conserving method and apparatus for managing a computer memory. A first memory bank comprises normal RAM. A second memory bank comprises low-power RAM. More frequently used virtual pages are mapped onto the first memory bank while less frequently ... | 02/14/1995 |
| 5377200 | Power saving feature for components having built-in testing logic A configuration register enables built-in testing logic during testing operations, and disables the testing logic during non-testing operations. When enabled, the testing logic is in a normal state, and when disabled the testing logic is in a low power st... | 12/27/1994 |
| 5339445 | Method of autonomously reducing power consumption in a computer sytem by compiling a history of power consumption Power consumption in an electrical system, particularly a battery powered computer system, may be reduced by a method in which the performance of the system's power consuming assets (e.g., I/O devices, memory, processors, etc.) is monitored during the ope... | 08/16/1994 |
| 5293494 | Personal computer for setting, in a software setup operation normal/reverse display, connection of an external device, and an automatic display off function A personal computer, wherein a setup processing is performed to select a display mode, either a normal-display mode or a reverse-display mode, and also to select one of the external devices such as a printer and an external floppy disk drive. Also, a disp... | 03/08/1994 |
| 5293632 | Method and apparatus for load shedding using a trainline monitor system A method for controlling power consumed by a plurality of subsystems on a multi-car train having a plurality of power supplies connected in parallel for supplying power to the subsystems. The train has a train wide communication network which includes a v... | 03/08/1994 |
| 5283905 | Power supply for computer system manager A power supply for a computer system manager, wherein the power supply has its own secondary power source operable when input power to the system manager no longer meets preset threshold values. The power supply functions in one of a discrete number of po... | 02/01/1994 |
| 5274828 | Computer including an integrated circuit having an on-chip high voltage source A computer system includes a data processor, an address bus, a data bus, and a read only memory device interconnected with the data processor by way of the address and data buses. A random access memory device also is interconnected with the data processo... | 12/28/1993 |
| 5251320 | Power controller for permitting multiple processors to power up shared input/output devices and inhibit power down until all processors have ceased service with the I/O devices A shared power controller for a rack of interface devices which are shared among a plurality of processor units. The shared power controller may be commanded into a power up mode by any connected central processor via its system power interface. A power d... | 10/05/1993 |
| 5220671 | Low-power consuming information processing apparatus There is disclosed a low-power consuming information processing apparatus having a storage unit for storing an application program of a main task, a main CPU capable of operating at a high speed for executing the application program, a sub-CPU for executi... | 06/15/1993 |
| 5167024 | Power management for a laptop computer with slow and sleep modes A power manager within a portable laptop computer provides power and clocking control to various units within the computer in order to conserve battery power. Transistor switches controlled by the power manager control the distribution of power and/or clo... | 11/24/1992 |
| 5163124 | Method and apparatus for controlling power to device in a computer system A personal portable computer system includes peripheral devices such as a printer and a CRT which can be driven by a battery power source. The computer system includes a computer body which contains interface units and power supplied to the interface unit... | 11/10/1992 |
| 4959786 | Dual regulator for reducing system current during at least one mode of operation A circuit to provide a regulated voltage output to low priority circuits in a microcomputer based control system from a switchable voltage output of a dual regulator such that the low priority circuits can be de-energized to reduce system current during v... | 09/25/1990 |
| 4747041 | Automatic power control system which automatically activates and deactivates power to selected peripheral devices based upon system requirement A selective, non-manual power controller provides the selective, non-manual power control of various components of a data processing equipment from and reports the power status of such components to a central location. As opposed to pass power controllers... | 05/24/1988 |
| 4677566 | Power control network for multiple digital modules A power network control system has a plurality of digital modules interconnected. A master logic unit in the network communicates with a specialized protocol to slave logic units in each module. The slave logic unit can instruct a power control circuit to... | 06/30/1987 |
| 4604699 | General earthquake observation system A computerized, automatic, portable general earthquake observation system is disclosed. The system includes a microprocessor and associated computer program stored in program memory, which control other components of the system through a computer bus. Inp... | 08/05/1986 |
| 4578774 | System for limiting access to non-volatile memory in electronic postage meters A method and associated apparatus for limiting the erasing and writing of data in the non-volatile memory (NVM) of an electronic postage meter operated under microcomputer control to predetermined periods of time after the power up and during the power do... | 03/25/1986 |
