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5481730 |
Monitoring and control of power supply functions using a microcontroller
A power supply monitoring and control circuit using a microcontroller to remotely monitor and control the functions and conditions of a power supply. The power supply monitoring and control circuit...
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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...
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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...
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5475654 |
Intermittent operation circuit
An intermittent operation circuit provided with a charge/discharge means in which, when a central processing means stops the operation of an internal clock oscillating means, a charging is started...
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5475848 |
Supervisory control method and power saving control unit for computer system
To reduce the total power consumption of a computer system, a supervisory control method is used to detect a substantial rest state of a CPU wherein it is waiting for a substantial task to start...
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5475271 |
Power source control system for electronic device and expansion unit connected thereto
A power source device of an expansion unit determines whether an electric device is connected to the expansion unit, and supplies an operating power source voltage CC to the electric device only...
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5471621 |
Information processing systems having a main CPU and a sub-CPU which controls the overall system to achieve power savings
An information processing system in which a sub-CPU is provided besides a main CPU to carry out those kinds of processing and power supply control that may be executed at time intervals of a short...
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5461652 |
Clock control circuit
A clock control circuit built in a microcomputer, wherein the supply of a system clock to peripherals that are not required to be always operated is suspended in the wait state where the supply of...
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5457801 |
Power saving system
In a personal computer having a logic circuit constituted by low-power consumption elements such as CMOS elements, a power saving system includes a register in which control data can be set from a...
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5454114 |
Microcontroller power-up delay
A microcontroller is adapted, when operating, to execute programs and instructions and, in response, to generate control signals to selectively control external apparatus. The microcontroller...
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5454112 |
Personal computer or the like with a light source controller for a display apparatus
Auxiliary light source for a display is controlled by a light source controller. The light source controller executes a control operation for turning the auxiliary light source on or off in...
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5449238 |
Method for operating a recording device powered by at least one rechargeable accumulator
In order to reduce the power requirement of the recording device (1) and thereby to achieve long operating readiness, the recording device (1) is placed in a stand-by state (Z3) during phases when...
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5440690 |
Network adapter for interrupting host computer system in the event the host device driver is in both transmit and receive sleep states
A network adapter with an interrupt generation circuit to minimize the number of host computer system interrupts needed to notify the host computer system that the network adapter has consumed one...
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5438678 |
Self-powered computer accessory device for power extraction from attached data signals and method of operating thereof
A self-powered intelligent computer accessory device has a serial data input port and a parallel data output port and is used for interconnection from computer to computer and between a computer...
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5432944 |
Data processing system having a dynamically enabled input synchronizer for selectively minimizing power consumption
A data processor has an input synchronizer (10) which is dynamically enabled by a plurality of control signals provided by a user of the data processor. When the plurality of control signals has a...
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5432946 |
LAN server personal computer with unattended activation capability
This invention relates to personal computers used as network servers, and more particularly to unattended activation and operation of such personal computers through cooperation of power supplies...
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5430883 |
Function expansion unit capable of supplying power to computer
A system includes a computer main body, and an expansion unit detachably connected to the computer main body, for supplying a power to the computer main body and expanding a function of the...
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5426755 |
Semiconductor device including clock selection circuitry selecting between high and low frequency clock signals for reduced power consumption
A semiconductor device and an electronic apparatus with the semiconductor device incorporated therein, include a sense amplifier so that a storage device can be read at a high speed and at a low...
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5426595 |
Portable autonomous device for the detection and recording of randomly occurring phenomena of short duration
The device of the invention uses at least one measurement chain comprising a sensor sensitive to the magnitude that one wishes to monitor, an analog-to-digital converter capable of supplying a...
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5416723 |
Loop powered process control transmitter
A loop-powered intelligent transmitter for process control variables is provided which can operate at an average current in excess of the minimum value of current that can flow in the loop. In...
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5414863 |
Power control staggering circuit for powering different components at different delay timings
A power control circuit for a device such as a personal computer, including a laptop or notebook computer, which can conserve battery use, prevent power surges to promote longer battery charges and...
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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...
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5410711 |
Portable computer with BIOS-independent power management
A personal computer which a microcontroller, separate from the main processor, is used for power-management functions. Under certain conditions, this power-management microcontroller can take...
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5410714 |
Integrated-circuit card equipped with a single chip data processor automatically entering low-power consumption mode
A semiconductor integrated-circuit card including a microprocessor having an active mode of operation capable of processing data and a low power consumption mode of operation disabled from...
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5408573 |
Integrated motor controller
A motor controller for a recreational vehicle (RV) heating system is disclosed. The motor controller regulates the amount of current supplied to an electrical motor in a blower of the heating...
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5408423 |
Battery operated portable terminal device and method of operation
A system for reducing power consumption in a battery powered terminal device is provided. The device includes a keyboard for inputting data to the terminal device. A processor is arranged for...
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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...
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5396443 |
Information processing apparatus including arrangements for activation to and deactivation from a power-saving state
An information processing apparatus can save an electric power when it is not in use and can be made active immediately after an operation medium such as a pen and a finger or the user approaches...
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5390350 |
Integrated circuit chip core logic system controller with power saving features for a microcomputer system
A system controller manages communication of data between a microprocessor, a memory and input/output controllers in a computer. A power management controller is operative upon occurrence of...
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5388265 |
Method and apparatus for placing an integrated circuit chip in a reduced power consumption state
A method and apparatus for a chip to monitor its own activity and enter and exit a state of reduced power consumption. The present invention includes defining a predetermined state in which the...
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5384721 |
Information processing system with a power control unit
An information processing system for processing an application program provides a power control unit being operated at a run mode at which the system is powered and a standby mode at which part of...
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5384579 |
Information display apparatus and method of scrolling displayed data
An information display apparatus having an input unit for entering a variety of data and processing requests, a processing unit, and a display unit for displaying input data and processing results...
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5381043 |
Power supply arrangement and connector
A power supply arrangement for a main unit of a portable, battery operated information processing apparatus including at least a microprocessor and a battery. The power supply arrangement...
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5381161 |
Data processing apparatus
When the driving process of a floppy disk drive is operated, the back light is turned off to conserve energy according to a control process. The back light is also controlled when the disk drive is...
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5375245 |
Apparatus for automatically reducing the power consumption of a CRT computer monitor
A method and apparatus for automatically undertaking power reduction of a monitor in a computer system make use of the fact that, when the computer system is active, synchronization pulses will be...
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5375077 |
Digital signal processor having reduced bus pre-charging operations
A digital signal processor according to the present invention comprises a data bus, a control line for supplying a pre-charge signal at the beginning of each cycle, a first memory for providing a...
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5371693 |
Computer with power saving function
If there is neither a key input from a keyboard nor a command input from a CPU within a predetermined period of time, a keyboard controller generates an NMI request for sleep control. The CPU...
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5369771 |
Computer with transparent power-saving manipulation of CPU clock
A computer system having power management control features which include states of normal clock speed operation, slow clock speed operation, and stop-clock operation based on input/output activity,...
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5367638 |
Digital data processing circuit with control of data flow by control of the supply voltage
Digital data processing electronic circuitry based on self-timed elements. The operating speed of the electronic circuitry is determined by its power supply voltage. Moreover, a buffer is connected...
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5365221 |
Computer card having low battery indicator
A battery powered electronic device (105) for coupling to a host computer (205 ) comprises an interface (115) for transmitting data and an annunciator (340) for generating a sensible alert. The...
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5355503 |
Event driven scanning of data input equipment using multi-input wake-up techniques
An event driven wake-up system for controlling current consumption by a microcontroller that controls a data input device used to enter data to a data processing system is provided. The wake-up...
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5355501 |
Idle detection system
A method and apparatus for idle detection in a computer system. The operating system of the computer includes an idle kernel which performs idle detection to detect idle states when application...
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5349688 |
Method for reducing power consumption includes comparing variance in number of times microprocessor tried to read input in predefined period to predefined variance
Two methods and apparatus for reducing power consumption in battery powered computers are disclosed. The first places the computer in a sleep mode whenever a certain data input function is called....
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5349668 |
Battery operated computer having improved battery monitor and cell reversal protection circuit
A battery operated computer includes a battery having a plurality of serially connected banks of battery cells that are monitored during operation of the computer to detect a nearly depleted...
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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...
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5335168 |
Computer system with power-down mode for monitor
A computer system has a monitor which can be powered down to conserve electrical power. The Monitor has two power modes, normal power mode and low power mode. Upon receiving a signal from the CPU,...
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5333119 |
Digital signal processor with delayed-evaluation array multipliers and low-power memory addressing
A digital signal processor including a digital FIR filter and memory for storing filter coefficients operates at a reduced power level by using array multipliers that calculate partial products...
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5315695 |
Personal computer capable of altering display luminance through key operation
A battery operable personal computer comprises a display, a keyboard, a CPU, and a power supply circuit. The display panel displays various types of data at a luminance level according to a value...
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5311441 |
Battery powered unit with battery sensor and resume processing control means
An apparatus driven by an output voltage of a battery when the power is ON includes a voltage detection circuit for detecting the output voltage of the battery, a judging circuit for judging...
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5305180 |
Disk drive ejector mechanism with latch and ejector and standby switch
A portable computer having a standby power mode of operation has a bay for receiving a portable removable disk drive. The drive has a pair of slots engageable with parallel guide rails in the...
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