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4823312 |
Asynchronous communications element
An asynchronous communications element which incorporates user-selectable FIFOs both as transmitter and receiver buffers to reduce CPU interrupt overhead. The asynchronous communications element...
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4768163 |
Magnetic stripe and wand reader interface employing off-the-shelf programmable communications interface
An apparatus and a method for interfacing a commercially-available programmable communication interface (PIC) with a magnetic swipe reader or a wand type reader. The invention modifies the raw...
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4750149 |
Programmable FIFO buffer
A programmable FIFO buffer is disclosed which including a (serial) input register, a control register, a (parallel-input parallel-output-type) FIFO buffer, a (serial) output register, and another...
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4740909 |
Real time data reduction system standard interface unit
The standard interface unit (SIU) is used with the AF-EWES Threat Radar Simulator which selects the best ECM (electronic countermeasure) techniques to counter threats such as surface-to-air...
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4710871 |
Data transmitting and receiving apparatus
A system for controlling the transfer of a data message over a common communication channel between a plurality of processing devices includes a MOS/LSI controller chip associated with each...
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4695974 |
Circuit arrangement for receiving and/or transmitting binary signals serially appearing on the plurality of lines to and from a processing device containing a micro-computer or microprocessor
For receiving or transmitting binary signals appearing serially on a plurality of lines to and from a processing device containing a microcomputer or microprocessor, the signal receiving lines...
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4688171 |
Serial bus for master/slave computer system
A serial to parallel bus converter (11) enables a slave computer (13), having a parallel bus input (19) to be controlled by a master computer (15) via a serial bus connection (14). The converter...
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4674064 |
Selectable bit length serial-to-parallel converter
A digital disk recorder is used to record digitized circular video images at the video frame rate. The digital pixel values for each image frame are written onto successive pages of a disk buffer...
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4642791 |
Interface for mailing system peripheral devices
An interface is connected between an OCIA type port and a mailing system peripheral, such as a weighing cell. The interface comprises an input data circuit, operatively connected to a serial data...
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4641276 |
Serial-parallel data transfer system for VLSI data paths
Serial data transfer circuitry is provided for transferring data between a multiplicity of functional units of a VLSI semiconductor chip. Each functional unit is provided with a respective data...
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4641263 |
Controller system or emulating local parallel minicomputer/printer interface and transferring serial data to remote line printer
A remote line printer system is used for printing on a line-by-line printer at a remote location. Data stored in a minicomputer and fed in parallel format from a print port. The minicomputer, which...
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4535421 |
Universal real time transparent asynchronous serial/echoplex converter
Interface apparatus allows a serial communicating device to communicate with an echoplex communicating device. A first microprocessor coupled to the serial device converts serial data to a parallel...
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4497041 |
Parallel serial controller
A computer-peripheral interface includes a latch to receive parallel data from a peripheral, such as a cash register, with a hardware mask to reject irrelevant data, a simple FIFO memory and a...
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4435781 |
Memory-based parallel data output controller
A memory-based parallel data output controller employs associative memories and memory mapping to decommutate multiple channels of telemetry data. The output controller contains a random access...
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4434474 |
Single pin time-sharing for serially inputting and outputting data from state machine register apparatus
Synchronously clocked gating apparatus is illustrated for time multiplexing signals into and out of a register simultaneously whereby a single pin can be utilized for the two sets of data transfer...
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4377843 |
Data distribution interface
A microprocessor-based circuit for interfacing between a plurality of serial data terminals and an external parallel data operating system. The interface circuit includes an asynchronous...
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4333159 |
Combination shift register, counter and memory device
A combination of one or more shift registers with a binary counter and a memory device is disclosed wherein binary information inputs are supplied to the shift register through a plurality of AND...
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4218742 |
System for controlling a serial data channel with a microprocessor
A control system for a serial data channel for a disk file is disclosed in which a microcontroller is used as the control means. The microcontroller has an input port and an output port, while the...
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4130883 |
Data communication system having bidirectional station interfaces
Digital data, in the form of serial station bit frames which exclude protocol information, are communicated bidirectionally over a plurality of serial transmission channels to peripheral devices in...
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4092714 |
Parallel command-status interface through multiplexed serial link
Method and apparatus for interconnecting parallel command data in a controller and parallel status data in a controlled device by transmitting the command and status data between the controller and...
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4040032 |
Peripheral device controller for a data processing system
There is disclosed an input/output system, employed within a data processing system that includes a central processing unit (CPU). The CPU includes improved input/output shift register structure or...
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4023144 |
Parallel to serial digital converter
A high speed parallel to serial digital converter includes a data shift rster, a control shift register and control circuitry. During a control cycle a control input comprising a set of control...
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3863226 |
Configurable communications controller having shared logic for providing predetermined operations
The apparatus of the invention includes receive logic for converting serial bit characters to parallel bit characters and transmit logic for providing a parallel to serial bit character conversion....
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3833892 |
MAGNETIC TAPE DATA SYSTEM
There is disclosed a data handling system including input-output means, intermediate memory means and principal memory means, together with data transfer and processing control logic. Input and...
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3763472 |
DISTRIBUTING AND COLLECTING MEMORY ARRAY AND TRANSFER SYSTEM
Apparatus for transferring bits of digital information between a plurality of a first bit-serial channel and a second bit-parallel channel. A matrix of bit storing cells is arranged with the cells...
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3761697 |
DATA PROCESSOR INTERFACE
An interface is coupled between a 20-bit serial word signalling stem and a 16-bit parallel word data processor. The interface buffers the transmission to an from the line, transfers to and from the...
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3745534 |
APPARATUS FOR SELECTIVELY COUPLING ELECTRICAL SIGNALS AND SCANNING AND RECORDING DEVICES TO MOVABLE DATA CARRIERS
Apparatus for selectively inputting, transcribing and reading out to and from moving data carriers, comprising a moving magnetic film carrier having at least one recording and read-out mechanism,...
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3742456 |
APPARATUS FOR SELECTIVELY FORMATTING SERIAL DATA BITS INTO SEPARATE DATA CHARACTERS
Interface apparatus which formats bits of data serially received from, for example, a data casette into preassigned groups of bits, such as, for example, alphanumerics which are transmitted in...
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3731278 |
FORMAT CONVERSION SYSTEM
A computer interfacing device for converting serial input data representing phonetic constructions of words or word parts of the link produced by a shorthand machine into parallel output data is...
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3708785 |
DATA SCANNER FOR REAL TIME INTERFACING OF A COMPUTER AND PLURAL REMOTE UNITS
A data scanner for providing real time communication between a computer and a plurality of remote stations and for providing control of each of the stations. The data scanner channels two-way...
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3469244 |
ELECTRONIC COMPUTER
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3395400 |
Serial to parallel data converter
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3389381 |
Communication system
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3351916 |
Data converter
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3345617 |
Digital data processing apparatus
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3333253 |
Serial-to-parallel and parallel-toserial buffer-converter using a core matrix
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3277446 |
Address modification system and novel parallel to serial translator therefor
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3136978 |
Electrical encoding system
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3113295 |
Data handling system
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3090943 |
Serial digital data processing circuit
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2913175 |
Computer storage data handling control apparatus
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