Matches 451 - 500 out of 574 < 1 2 3 4 5 6 7 8 9 10 11 12 >
Match Document Document Title
4800532 Circuit arrangement with a processor and at least two read-write memories  
In order for any failure of the power supply unit for two read-write memories which are operable in parallel, not to result in irreversible damage to data, two parallel power supply circuits are...
4796235 Write protect mechanism for non-volatile memory  
A write protect mechanism for a programmable read-only memory prevents writes to the PROM unless a protect register contains predetermined information. The protect register is itself a write...
4791614 Semiconductor memory device having erroneous write operation preventing function  
In a semiconductor memory device such as an E 2 PROM, a write enable signal (WE) is supplied to a buffer formed by an enhancement-type transistor (Q 11 ) and a depletion-type transistor (Q 12 )...
4791608 Memory card having shutter protected terminals  
A memory card adapted to be removably loaded into electronic equipment comprises a printed circuit board having a memory element mounted thereon and a contact pattern for making an electrical...
4788661 Microcomputer reset circuit  
A reset circuit controlled by a comparator circuit detecting the voltage of the power supply and incorporating a circuit which outputs reset pulses with a constant period and inhibits output of the...
4763333 Work-saving system for preventing loss in a computer due to power interruption  
A device for preventing unintentional loss of data in a computer system as a result of electrical power interruption comprises a standby power supply, a monitor circuit for generating signals when...
4760556 Nonvolatile semiconductor memory device  
Each of the memory cells forming a nonvolatile RAM comprises one floating-gate transistor and one capacitor. When the power source is turned on, storage of information is performed according to the...
4754432 Nonvolatile multiconfigurable circuit  
A multiconfigurable integrated circuit having volatile and nonvolatile segments configured and interconnected so that data can be nonvolatilely entered and transferred at high frequency in the...
4744097 Data transmission system  
A data transmission system includes a data transmitter/receiver connected to an ECR and a data processor. The transmitter/receiver receives data from the ECR and transmits the reception data to the...
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...
4739198 Signal output circuit of a push-pull type  
An output circuit of a push-pull type is disclosed. The output circuit includes first and second transistors connected in series, means responsive to a data signal for producing true and...
4715016 Memory safeguard device for microprocessor  
A microprocessor memory safeguard device comprising a switch having two it terminals and a common terminal. The common terminal is connected to a first terminal of the memory and to the logic zero...
4713756 Non-volatile memory device for a programmable controller  
A nonvolatile memory storage device for a programmable controller to provide an archival back-up for user programs with the use of a battery or other alternate back-up power source. The device can...
4712195 Solid-state cumulative operations measurement system  
The system accurately measures a summation of the operations when an operating voltage is present. The system includes a capacitor charged by a supply voltage and a volatile memory register...
4710840 Generating system with fault detection  
"Doorbelling" in a generating system including a fault detecting circuit is prevented without the use of auxiliary power supply for a generator control unit. The generating system includes a...
4707807 Non-volatile, programmable, static memory cell  
A memory and a non-volatile, programmable, static memory cell in which a programmable transistor and a capacitance are added to a known static memory cell. The cross-wise couplings between the...
4689495 CMOS high voltage switch  
A CMOS high voltage switch for interfaceing between a decoder output and an input to an erasable, programmable read-only-memory includes an inverter for receiving an input signal from the output of...
4686386 Power-down circuits for dynamic MOS integrated circuits  
A power-down circuit for saving operational power dissipation of a dynamic MOS integrated circuit during idling conditions. A clock divider generates a divided clock signal in response to an...
4685083 Improved nonvolatile memory circuit using a dual node floating gate memory cell  
An improved nonvolatile memory has an adaptive system to regulate the charging current supplied to store data on nonvolatile storage nodes in order to provide acceptability low strain on the tunnel...
4680706 Recloser control with independent memory  
A microprocessor based recloser control including a independent memory is disclosed. The independent memory is alterable by processor means and by input and output means independent of the...
4672585 Device for stopping the running of programs being executed in a microprocessor prior to the disappearance of the power supply voltage of the microprocessor  
A device for stopping the running of programs being executed in a microprocessor prior to the disappearance of the power supply voltage of the microprocessor comprising a differentiator circuit...
4667176 Failure-monitor system for an automotive digital control system  
A failure-monitor system for a digital control system includes one or more fault indicators which are adapted to turn on in response to failure of corresponding elements of the digital control...
4651307 Non-volatile memory storage system  
A non-volatile memory storage system having non-volatile memory (10) and volatile memory. The non-volatile memory (10) will have its most significant bits memory locations (11) periodically updated...
4638465 Integrated structure microcomputer provided with non-volatile RAM memory  
An integrated structure composed of a processing unit (CPU), ROM memory, RAM memory and other optional functions, such as input/output etc., is arranged as a microcomputer, in which all or part of...
4633444 Switch circuit provided with means for setting up the initial condition thereof  
In a switch circuit, there are provided a signal input stage comprising an array of switches paired with pilot lamps; a storage circuit comprising I 2 L elements for storing a signal derived from...
4631707 Memory circuit with power supply voltage detection means  
A memory circuit provided with a control circuit which controls operations of the memory circuit in such a manner that the memory circuit is automatically set in a stand-by state when a value of a...
4628484 Signal and power applying unit for memory cassettes  
When a memory cassette having semiconductor memory is attached to or detached from a connector mounted on an adapter, the supply of power to the memory cassette through the adapter is switched on...
4615020 Nonvolatile dynamic ram circuit  
A nonvolatile dynamic RAM capable of operating in a dynamic RAM mode and a second, nonvolatile mode, is disclosed. The nonvolatile dynamic RAM has a memory cell having a transfer transistor for...
4612632 Power transition write protection for PROM  
A power transition detection and override circuit is coupled to the OUTPUT-ENABLE (OE) pin of a nonvolatile electrically erasable programmable read only memory (EEPROM) for preventing inadvertent...
4611302 Non-volatile data stores  
A battery backup circuit for a CMOS RAM is isolated from the negative, or ground, power supply rail of the memory so that the memory is held at a potential which is sufficiently different from that...
4610003 Dynamic type semiconductor memory device  
A dynamic type semiconductor memory device includes a memory cell having a capacitor for storing an amount of charge corresponding to data and, an n-channel MOS transistor to control charging and...
4610000 ROM/RAM/ROM patch memory circuit  
An integrated circuit contains ROM, ROM patch and RAM memories on a common substrate with a standard pinout. The ROM and RAM fill the address space allowed by the address pins. Control of the patch...
4607351 Cartridge memory protection  
Cartridge (1) contains memory (40a-40h) and a back-up battery (13). Terminals (5a-5i) of the cartridge (1) plug into termnals (7a-7i) of a host machine (3). Positive deactivation of the write...
4594688 Power supply circuit for flip-flop memory  
A memory device is disclosed which is automatically and stably set to a predetermined logic state upon the application of power thereto. The memory device comprises a flip-flop having first and...
4593384 Security device for the secure storage of sensitive data  
A device is disclosed for securely housing and protecting microelectronic circuitry in order to prevent external access to sensitive data stored therein. In a preferred embodiment of the invention,...
4591782 Power supply and power monitor for electric meter  
An electronic register for an electric meter includes a non-volatile storage into which data is written upon the detection of an impending power outage. A sufficient quantity of electric energy is...
4587640 Cassette type semiconductor memory device  
A cassette type semiconductor memory device is provided with a RAM and a back-up battery within a cassette, with a connector connected to the main frame of a data processor. The RAM and its...
4584663 Apparatus for power-on data integrity check of inputted characters stored in volatile memory  
A memory data coincidence device includes a volatile read write memory connected to a main power source and auxiliary backup power source, and a keyboard for supplying data to the read write...
4559637 Tamper proof digital value accumulator and display method and apparatus  
The totalized count obtained from a seriate train of signal pulses is stored in a programmable memory means as a permanent state change in a separate memory cell for each count increment. Memory...
4550390 Semiconductor memory device  
A semiconductor memory having a construction making it less susceptible to α-rays. The memory includes a pair of transistors connected in a flip-flop arrangement. In each memory transistor there...
4541073 Non-volatile flip-flop with a static resetting  
A flip-flop further comprising two branches with MNOS elements serially connected with P channel MOS transistors for permitting a non-volatile storing of the informations comprised in the flip-flop...
4538246 Nonvolatile memory cell  
A static random access memory array cell that is non-volatile because when power fails a floating gate is charged or not charged depending on the information content of the cell. When power is...
4534018 Non-volatile memory protection circuit with microprocessor interaction  
A method and associated apparatus for controlling the erasure and writing of data in non-volatile memory during the power up, power down and normal operating cycles of an electronic postage meter...
4531214 Power loss analyzer circuit  
A power loss analyzer for providing a signal processor with a discrete power loss alert signal indicative of an imminent power disruption and for providing to the processor subsequent to a...
4530054 Processor-addressable timestamp for indicating oldest written-to cache entry not copied back to bulk memory  
In a data processing system including a processor, a bulk memory, a cache, and a storage control unit for controlling the transfer of data between the bulk memory and the cache, a timestamp is...
4525800 Enhanced reliability data storage system with second memory for preserving time-dependent progressively updated data from destructive transient conditions  
A time delay memory system is used for enhancing the reliability of a data processing system or the like, wherein the critical information contents of temporary storage means are preserved from...
4523295 Power loss compensation for programmable memory control system  
An arrangement for storing user programmed system timing information in a microprogrammable system in the event of a power outage. The system includes a static random access memory (RAM) for...
4499560 Non-volatile flip-flop with a dynamic resetting  
A flip-flop further comprising two branches with MNOS elements serially connected with P channel MOS transistors for permitting a non-volatile storing of the information contained in a flip-flop at...
4493083 System for updating data in bubble memories  
A data update system in a bubble memory in which, to preserve the simultaneity of data in the event of a power failure during the updating of data in the bubble memory, initialization data is...
4475180 Non-volatile memory circuit for portable electronic devices  
A writable non-volatile memory circuit for use in portable electronic devices such as electronic timepiece, wherein there is improved the power consumption and there is provided a volatile memory...
Matches 451 - 500 out of 574 < 1 2 3 4 5 6 7 8 9 10 11 12 >