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5121500 |
Preliminary polling for identification and location of removable/replaceable computer components prior to power-up
An apparatus and method for polling a plurality of components in a data processing system includes a sensor for determining when a request for power up has been made, a series of parallel circuits...
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4930101 |
Microprocessor-controlled meter package for a printer
In a line printer, an integrated meter package developing a clock incorporates a microprocessor receiving a line printed signal, power on voltage, and a preset ribbon exhaust count in order to...
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4918649 |
Method for generating instructions for inhibition switch-off of power after power-off operation
An electronic apparatus includes power source for supplying a power, key input unit for inputting key instructions, a memory for memorizing the key instructions, a generator for generating a power...
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4868832 |
Computer power system
A backup computer power system for powering and controlling a computer which is otherwise powered by a main power source, when the main power source fails or is disconnected, wherein an auxiliary...
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4845632 |
Electonic postage meter system having arrangement for rapid storage of critical postage accounting data in plural nonvolatile memories
A system for the nonvolatile storage of data, such as a postage meter system, employs a microcomputer coupled to two nonvolatile memories. The first nonvolatile memory requires data be applied to...
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4782355 |
Power source device
A power source system including a power source device and an external device connected to said power source device, in which the connection between the power source device with the external device...
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4768162 |
Electronic apparatus having a power control circuit for developing a power disconnection invalidating instruction in order to protect memory contents
An electronic apparatus includes power source for supplying power, a key input unit for inputting key instructions, a memory for memorizing the key instructions, a generator for generating a power...
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4768147 |
Electric power supply device for microprocessors
A device is provided for supplying microprocessors with electricity, comprising a source for supplying with power microprocessors interconnected by a bus. The source has an initialization output...
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4718007 |
Power control method and apparatus for data processing systems
In a power control method and apparatus for a data processing system, a judgement is made as to whether or not a power supply of the system is to be turned OFF on the basis of the temporal...
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4701888 |
Data bus discharging circuit
A data bus discharging circuit capable of enabling the high-speed operation of a microprocessor, includes a control signal generating circuit which provides control signals, a precharge/enable...
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4669059 |
Method and apparatus in a data processor for selectively disabling a power-down instruction
A method for allowing the user of a data processor having a power-down instruction to selectively disable the power-down instruction. In the preferred circuit, the user stores a special code in a...
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4654821 |
Automatic restart apparatus for a processing system
An automatic loading apparatus for a processing system for restarting an application program upon sensing a software failure. The application program periodically executes at least one portion of a...
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4635195 |
Power control network using reliable communications protocol
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 to...
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4593349 |
Power sequencer
A peripheral power control sequencer incorporates a microcomputer to control the sequencing of the powering of a plurality of peripheral control units. The terminals of the input/output ports of...
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4593323 |
Facsimile system control apparatus
The present facsimile machine comprises a system control unit, including a pair of central processing units (CPU's), and main and auxiliary power supplies. In one embodiment of the present...
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4573117 |
Method and apparatus in a data processor for selectively disabling a power-down instruction
A method for allowing the user of a data processor having a power-down instruction to selectively disable the power-down instruction. In the preferred circuit, the user stores a special code in a...
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4495568 |
Apparatus for the control and monitoring of power supply sources for data processing systems
Apparatus is disclosed for controlling and monitoring a modular power supply system for supplying power to a data processing system and the like that includes a plurality of power sources allocated...
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4233666 |
Drive power sequencing
In a digital information storage system or the like, start up power sequencing for independently operable machines such as disk drives each equipped with a microprocessing unit is provided through...
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4213174 |
Programmable sequence controller with drum emulation and improved power-down power-up circuitry
A programmable sequence controller is disclosed utilizing digital and analog inputs in order to generate digital output driver signals for the control of external systems or devices. The controller...
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4204249 |
Data processing system power control
The data processing system consists of a plurality of interconnected data processing subsystems one of which is a service subsystem devoted to servicing the remainder of the system and provides...
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3982230 |
Programmable logic controller with flag storage
A programmable logic controller has input elements sampled to determine status in each of multicomponent lines of a relay ladder network. Output elements in the network connect power voltage...
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3444528 |
REDUNDANT COMPUTER SYSTEMS
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