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Searching: cpu processor





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Patent # Description
US-4,823,262 Apparatus for dynamically switching the clock source of a data processing system
A data processing system includes a first and a second central system wherein the central processing unit (CPU) of the first central system is operatively...
US-4,821,229 Dual operating speed switchover arrangement for CPU
A user selectable switch arrangement in combination with logic circuitry allows the timing of a central processor unit (CPU) to be switched between two clock...
US-4,821,179 Communication system configuration detection apparatus and method
A data processing system includes a processor unit (CPU) connected over a CPU bus to a plurality of memory components, but is not connected to any input-output...
US-4,821,178 Internal performance monitoring by event sampling
The disclosure provides event-controlled operations for an internal hardware/softward monitor for a processor in a data processing system. It embeds and...
US-4,812,828 Video display processor
A video display processor (VDP) is connectable to an input control device such as a light pen and a mouse. The VDP comprises a counter circuit which is composed...
US-4,811,345 Methods and apparatus for providing a user oriented microprocessor test interface for a complex, single chip,...
Methods and apparatus are disclosed that facilitate the testing and development of computer systems that include at least one single chip microprocessor. In...
US-4,811,280 Dual mode disk controller
A dual mode disk controller is disclosed for use between a host processor and its storage medium for controlling data transfer to and from the storage medium....
US-4,803,632 Intelligent utility meter system
A data processor type utility meter for electricity, and/or water, gas and therms, is provided with a display which successively displays any or all of the...
US-4,800,423 Interface module for superimposing alphanumeric characters upon RGB video signals
An interface module for superimposing alphanumeric characters upon external GB video signals received by a SCART connector of a television set is disclosed. The...
US-4,799,148 Interrupt control system having a processor for determining service priority among a plurality of modules...
An interrupt control apparatus in a data processing system has a central processing unit (CPU) and a plurality of modules which are connected to a common bus....
US-4,791,553 Control unit of input-output interface circuits in an electronic processor
The control unit is arranged to handle the requests for transmission and reception interrupts (i.e. requests to the central logic unit CPU to halt its operative...
US-4,787,030 Data processing apparatus with fixed address space
A CPU initializes pluggable adapters with built-in identity and conditional ROS and complies a Hardware First Level Interrupt Handler (HFLIH) table of identity...
US-4,779,188 Selective guest system purge control
The embodiments enable address translations for a virtual machine in the TLB (translation lookaside buffer) of a CPU to be retained from exiting a SIE (start...
US-4,777,591 Microprocessor with integrated CPU, RAM, timer, and bus arbiter for data communications systems
A microprocessor device used as an adapter for a communications loop of the closed-ring, token-passing, local area network type is disclosed. Each station on the...
US-4,774,660 Increased bandwidth for multi-processor access of a common resource
This circuitry permits equal access to a shared resource by a number of central processing units (CPUs). In a multiple CPU arrangement, common resource...
US-4,773,037 Increased bandwidth for multi-processor access of a common resource
This circuitry permits equal access to a shared resource by a number of central processing units (CPUs). In a multiple CPU arrangement, common resource...
US-4,764,925 Method and apparatus for testing integrated circuits
A processor controlled IC component test apparatus adapted to be employed in-line with automatic IC DIP component handling equipment is capable of conducting a...
US-4,764,868 Distributed input/output system
An intelligent input/output system for a programmable controller includes a plurality of input/output (I/O) modules, each of which may be located in proximity to...
US-4,757,443 Data processing system with unified I/O control and adapted for display of graphics
A data processing system which includes a central processing unit (CPU) to which is connected an I/O bus and a memory bus is disclosed. The data processing...
US-4,742,485 Word processor with type through mode
A word processor includes a keyboard, a cathode-ray tube, a first and a second storage devices, a central processing unit, and an internal storage. The first...
US-4,740,969 Method and apparatus for recovering from hardware faults
A method and apparatus for recovery from a fault occurring within a computing system using a hardware recovery module comprising a microprocessor dedicated for...
US-4,737,932 Processor
A processor includes a central processing unit (CPU), a local memory and a local memory access device which are coupled to an internal bus, and an input/output...
US-4,736,409 Control data transmission system for private branch exchange
A private branch exchange includes a common control module and a plurality of line/trunk modules. A plurality of line/trunk cards are contained in a respective...
US-4,727,486 Hardware demand fetch cycle system interface
A data processing system includes a central processor unit (CPU), a main memory and a memory management unit (MMU). Information is stored in main memory in...
US-4,724,520 Modular multiport data hub
A data hub for facilitating and effecting data transfers between signal processors with high efficiency is disclosed. The data hub receives low priority data...
US-4,720,783 Peripheral bus with continuous real-time control
A digital data processing system wherein large amounts of digital data are transferred from a source that is coupled to the internal bus of a host CPU to a data...
US-4,719,568 Hierarchical memory system including separate cache memories for storing data and instructions
A hierarchical memory system for use with a high speed data processor characterized by having separate dedicated cache memories for storing data and instructions...
US-4,709,329 Input/output device controller for a data processing system
An input/output (I/O) device controller for a data processing which is implemented on a single printed circuit board, includes a terminal control section, an I/O...
US-4,700,292 Interface circuit arrangement for transferring data from a master processor to a slave processor
Two identical processors of a communication system, operating in master-slave relationship, each have a mass memory, a working memory, a CPU and an interface...
US-4,696,019 Multi-channel clock synchronizer
A synchronizer for use in synchronizing individual signal processors in a multi-channel system is disclosed. Each synchronizer has a counter for counting its...
US-4,694,395 System for performing virtual look-ahead memory operations
A system is disclosed which reduces the cycle time required for performing virtual look-ahead memory operations in computer systems employing random access...
US-4,694,392 Video display control
Video control circuitry for controlling the video format presented to the cathod ray tube or screen and capable of providing a combination of character...
US-4,686,698 Workstation for interfacing with a video conferencing network
A workstation (10) for interfacing with a video conferencing network comprises a display (12) which has an internal camera (32) associated therewith. The camera...
US-4,675,841 Micro computerized electronic postage meter system
An advanced electronic postage meter system is described, which is built around a micro computer set. The micro computer set is of LSI design, and comprises a...
US-4,665,494 Spectrum display device for audio signals
An input audio signal is AD converted into digital signals which are processed by a central processing unit (CPU) in which Fast Fourier Transform (FFT) operation...
US-4,665,483 Data processing system architecture
Data processing system architecture in which a central processing unit (CPU) and a plurality of input/output processors (I/OP), said I/OPs being connected in...
US-4,661,900 Flexible chaining in vector processor with selective use of vector registers as operand and result registers
A pair of processors are each connected to a central memory through a plurality of memory reference ports. The processors are further each connected to a...
US-4,654,784 Circuit arrangement for routing signals between a master-slave pair of controlling processors and several...
A plurality of switching modules, e.g. components of a digital telephone exchange, each include a pair of central processing units (CPUs) operating in...
US-4,653,111 Image data monitor apparatus
An image data monitor apparatus has a CCD for reading image data of a document, an input buffer for receiving the pixel data from the CCD, an image processor for...
US-4,653,110 Image processor system
In the image processor system of the invention, an image processor and a plurality of image memories are connected through a plurality of image buses. The image...
US-4,651,300 Word processing apparatus
A word processing apparatus comprising a word processor which prepares and edits a document by a first CPU in response to a signal received from an input unit;...
US-4,648,034 Busy signal interface between master and slave processors in a computer system
A 32-bit central processing unit (CPU) having a six-stage pipeline architecture with an instruction and data cache memory and a memory management units, all...
US-4,646,232 Microprocessor with integrated CPU, RAM, timer, bus arbiter data for communication system
A microprocessor device used as an adapter for a communications loop of the closed-ring, token-passing, local area network type. Each station on the ring has a...
US-4,641,308 Method of internal self-test of microprocessor using microcode
A microprocessor device is used in an adapter for a communications loop of the closed ring, one-way, token-passing local area network type. Each station has a...
US-4,636,942 Computer vector multiprocessing control
A multiprocessing system and method for multiprocessing is disclosed. A pair of processors are provided, and each are connected to a central memory through a...
US-4,626,986 Processor having plural initial loading programs for loading different operating systems
An information processor with a read only memory ROM stores a plurality of initial program loader (IPL) programs. The ROM memory has address inputs divided into...
US-4,623,986 Memory access controller having cycle number register for storing the number of column address cycles in a...
This device permits the distribution of the access to a RAM memory RAM (14) among a plurality of users (U1, U2, U3), the access being effected in an asynchronous...
US-RE32,286 Apparatus for electronically controlling internal combustion engine
An apparatus for electronically controlling an internal combustion engine of automobiles, in which a processor comprising a CPU, a RAM and a ROM is determined to...
US-4,620,186 Multi-bit write feature for video RAM
In a video display system having a video random access memory (RAM) including a plurality of color memory banks, with one memory bank for each of the primary...
US-4,617,554 Keyboard scanning
A multi-key keyboard is scanned at high speed in such a manner as to substantially reduce erroneous key entries caused by the simultaneous engagement of more...
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