Matches 201 - 250 out of 256 < 1 2 3 4 5 6 >
Match Document Document Title
5664089 Multiple power domain power loss detection and interface disable  
A power loss detection and recovery circuit for providing continued memory operations upon loss of a supply voltage. Multiple independent power domains, each of which provides an electrically...
5664203 Peripheral device input-initiated resume system for combined hibernation system and back-up power supply for computer  
A peripheral device input-initiated resume system for a combined hibernation system and back-up power supply for a computer comprises a keyboard controller for inputting an appropriate signal to...
5640530 Use of configuration registers to control access to multiple caches and nonvolatile stores  
A method and system for controlling data flow in a storage subsystem containing multiple cache and/or multiple NVS elements based on the operability of the cache arrays and NVS arrays. In a data...
5600841 Method and apparatus for anticipatory power management for low power data  
A method, system, and apparatus for controlling the supply of power to an I/O device attached to a General Purpose Input/Output (GPIO) circuit in a personal digital assistant (PDA) is described....
5590343 Touch-sensitive switching circuitry for power-up  
A system connects to an external contact pad that comprises a battery, a high-impedance load element powered by the battery and connected to pull a voltage potential of an external contact pad in a...
5586249 Control information backup system  
A control information backup system includes a control unit which is driven by a first power unit and includes a memory for storing software control information which is used during a software...
5581692 Automatic clearing of power supply fault condition in suspend system  
A computer system having a CPU, a switch, a power supply, and power supply control logic for controlling the state of the power supply via a control signal. The power supply control logic comprises...
5557738 Power system configuration and recovery from a power fault condition in a computer system having multiple power supplies  
A power system fault handling mechanism for portable electronic devices having multiple power supplies. A safety-net circuit is triggered when a power fault condition is detected. The safety-net...
5546589 System having controlled power supply for prohibiting the power on switch from being turned on and accessing memory when supply voltage falls below second predetermined voltage  
The power supply of electronic apparatus is controlled according to the operational state of a power on switch and a power off switch. A first detector detects that the power supply voltage falls...
5544312 Method of detecting loss of power during block erasure and while writing sector data to a solid state disk  
A method of protecting the accuracy of sector of data while the writing the sector of data into a block of a solid state memory disk. First, a sector offset is written into the block to indicate...
5542042 Method and apparatus for monitoring volatile memory validity  
A method and apparatus for monitoring validity of a volatile memory of a microcomputer in an electrical circuit supplied with electrical power. Loss of electrical power is sensed and upon sensing...
5539876 Computer unit with a resume function  
Upon detecting removal of a display section from a computer unit's main body, dismounting a battery, removal of a memory board from the computer unit's main body or the like, the CPU saves system...
5511183 Non-volatile memory controlling apparatus and applications of the same to electronic computer peripheral equipments  
A control apparatus for a non-volatile memory and applications of the control apparatus to electronic computer peripheral equipments are disclosed. For example, a NOVRAM (non-volatile static random...
5511161 Method and apparatus to reset a microcomputer by resetting the power supply  
The invention provides an interunit communication system which comprises a main unit and a plurality of subunits and executes a communication between the units by a microcomputer of each unit. The...
5488731 Synchronization method for loosely coupled arrays of redundant disk drives  
A multiprocessor system includes a plurality of substantially identical nodes interconnected through a switching network, each node including a disk drive, NVRAM, and a processor. The system stores...
5483635 Circuit for protecting a load control device from high and low voltage conditions  
A protective device for a load-control device which provides preservation of the load-control function of a CPU and prevents misoperation, even if an abnormality occurs, and which comprises a CPU,...
5456592 Injection mold probe and runnerless injection mold  
An injection mold probe and a runnerless injection mold, in which the injection mold has a tip heater for intermittently heating a tip portion of the probe and a body heater for heating a body...
5448719 Method and apparatus for maintaining and retrieving live data in a posted write cache in case of power failure  
A host computer including a posted write cache for a disk drive system where the posted write cache includes battery backup to protect against potential loss of data in case of a power failure, and...
5414861 Data protection system using different levels of reserve power to maintain data in volatile memories for any period of time  
An intelligent data protection system includes a memory refreshing apparatus and a memory access apparatus connected to the volatile memory array of a computer system for maintaining the integrity...
5396637 Data processing system with power-fail protected memory module  
A data processing system preserves the contents of a volatile memory in the event of a power-loss and restores the contents upon a power-up. The system includes an AC line monitor which signals...
5394536 Stable memory circuit using dual ported VRAM with shift registers in a multiple memory bank setup for high speed data-transfer  
A stable memory circuit which includes a pair of memory banks (2(a)) and (2(b)) each having eight arrays of eight VRAMs (3). Each VRAM (3) is dual-ported and includes a processor port connected to...
5390322 Apparatus and method for retaining cycle memory in electronic sterilizer controls  
Apparatus and methods for providing memory backup of sterilizer cycle progress in a sterilizer control apparatus are disclosed. The control apparatus includes a microprocessor operable to detect a...
5384792 Uninterruptible power supply  
An uninterruptible power supply which is down-sized and lightened is provided. A utility line 1 is connected with a switch 8 and the switch 8 is connected with a rectifying circuit 2 and DC power...
5381554 Uninterrupted power supply (UPS) system interfacing with communications network  
There is a provided a system of one or more uninterrupted power supply (UPS) units, each UPS unit having distributed processing system and a network interface for interfacing with a local area...
5375246 Back-up power supply apparatus for protection of stored data  
A stored data protection apparatus for an electronic device has a CPU (20) and a volatile memory (21) controlled by the CPU for storing data therein. Both of the CPU and the volatile memory ace...
5339426 System and method for resume processing initialization  
A resume processing driver for an advanced operating system, such as OS/2, is provided which saves data indicative of the operating conditions of the advanced operating system into system memory...
5327172 Polling for detection of power supply or other failures of a digital circuit  
A television receiver includes a standby power supply, and an operational or run mode power supply. A microprocessor coupled to the standby power supply controls switching between a run mode, where...
5325363 Fault tolerant power supply for an array of storage devices  
A fault tolerant power supply system for providing reliable power to a redundant array of data storage units. The system includes one power supply module for each channel of the array of data...
5319571 UPS system with improved network communications  
A system of one or more UPS units, each UPS unit having distributed processing apparatus and a network interface for interfacing with a local area network, the network providing a communication...
5317752 Fault-tolerant computer system with auto-restart after power-fall  
A fault-tolerant computer system employs a power supply system including a battery backup so that upon AC power failure the system can execute an orderly shutdown, saving state to disk. A restart...
5315161 Power failure detection and shut down timer  
A system and method for providing power from a source of stored electrical energy to a microcomputer for a user established "ride-through" period of time after a disruption in the primary power...
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....
5230074 Battery operated computer power management system  
A computer has two processors. A main processor operates under the control of an operating system and provides overall control of the computer for executing application programs. The main processor...
5212797 Multiple CPU system including automatic power supply restoration following instantaneous shutdown  
A multiple-CPU system including a main CPU and at least one subordinate CPU connected thereto. Both the main and subordinate CPU are provided with a respective voltage detector circuit for...
5204963 Method and apparatus for a backup power controller for volatile random access memory  
A method and apparatus for a software actuable backup power controller for selectively controlling power to a volatile random access cache memory. If memory does not contain any data that needs to...
5193176 Computer work saving during power interruption  
A computer having both volatile and nonvolatile memory, and which is operative in response to a system program and an application program, is protected against an interruption of a primary power...
5095438 Engine controller with low voltage reset  
An engine controller is provided with a microcomputer to effect an engine control through learning on data necessary to control the engine and storing learning results with respect to the data in...
5034915 Data storage system for transferring last entered information from static memory to magnetic disk upon recovering from data storage interruption  
A data storage system comprised of a disk drive including a magnetic disk for storing an operating system program, a dynamic RAM memory circuit for temporarily storing the operating system program,...
4979143 Recovery from power-down mode  
A single--chip microcomputer recovers efficiently from the power-down state by means of an interrupt that bypasses RAM initialization. It the power supply fails in the power-down mode, restoration...
4967347 Multiple-redundant fault detection system and related method for its use  
A multiple-redundant computer system having multiple computational devices operating in synchronism, multiple voter circuits to provide voted memory reading operations for the devices, and multiple...
4908790 Backup battery switching circuitry for a microcomputer or a microprocessor  
Backup battery switching circuitry for a microcomputer or a microprocessor includes circuitry for selectively coupling a backup battery to a power supply output terminal of the microcomputer or...
4864557 Automatic refresh of operating parameters in equipment with volatile storage  
A set of operating parameters that define the functions of a data unit interfacing a subscriber's terminal to a 2-wire telephone loop and which are stored in a volatile memory of a microcomputer in...
4841474 Computer system with work stations at remote positions and reserve battery power supply  
A computer system having a central machine, work stations and a background memory, wherein the central machine has an active state, a standby state, a battery power supply state and a rest state, a...
4835670 Microcomputer fuel burner control having safety interlock means  
A microcomputer control utilizes a nonvolatile memory with an interlock. The interlock functions upon the removal of the microcomputer control from a base or from a mounting surface, and its...
4799185 Protective circuit for memory devices  
A circuit for protecting the contents of memory devices, each having a power supply voltage input terminal and a disabling signal input terminal following a failure in an A.C.-derived D.C....
4742482 Modem controller  
A memory (90) comprising a non-volatile memory and a volatile memory, contains a test word and other words which represent a complete user-selected configuration profile. The configuration profile...
4658352 Computer system with a back-up power supply  
A computer system having a back-up power supply for preserving the contents of a memory during a power down mode where the power current is supplied from the back-up power supply, is characterized...
4639864 Power interlock system and method for use with multiprocessor systems  
A multiprocessor system the kind in which two or more separate processor modules are interconnected for parallel processing. The multiprocessor system includes an input/output system having...
4607330 Fault-tolerant power supply system  
A power supply system for use in a fault-tolerant computer having a main bus interconnecting several main bus elements, with at least one of the elements being capable of transmitting commands and...
4586179 Microprocessor reset with power level detection and watchdog timer  
A combination watchdog timer and input voltage level detector circuit is coupled to a microcomputer (or microprocessor) for insuring proper operation thereof under various conditions. The watchdog...
Matches 201 - 250 out of 256 < 1 2 3 4 5 6 >