A decommutation compiler
Decommutation compiler for generating machine- language instructions and error detection in compiler language
MACHINE LANGUAGE↗
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Results for “error detection”
Search indexed NASA NTRS and DOE OSTI research on propulsion, heat transfer, battery materials and energy systems. Follow report and document links to the original sources.
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Self-correcting, synchronizing ring counter using integrated circuit devices
Three nand gate circuits are used to add error detection and reset logic circuitry for initiating and retaining the correct binary state in the flip-flop circuits of a ring counter. As the input signals are counted, the position of the specified state moves in ordered sequence around circuit loop.
Maasberg, W. A.↗
Error correction for deep space network teletype circuits
Error detection codes and correction devices for Deep Space Network /DSN/ teletypewriter systems
Fredricksen, H.↗
Image position sensor
Preliminary design calculations for a proposed fine guidance experiment telescope containing a four-sided pyramidal reflector indicate that 0.01 arc sec pointing, at 0.003 arc sec sensing resolution, could be achieved by viewing a +10.0 magnitude star where the total collected light energy would be applied for fine error detection.
Rosett, B.↗
The dynamic behaviour of a large steerable radio telescope.
Dynamic behavior of large steerable radio telescope, showing structural resonance influence on error detection system
Macinante, J. A.↗
Coding - An engineering tool for the digital telemetry link.
Digital telemetry link coding as English language analogy, developing block code scheme combining bit, word and block error detection and correction methods
Muller, R. M.↗
Ground computer test trap
Test trap consists of logic nest of five printed circuit boards, plus power supply within the unit. Device monitors more than one logic area simultaneously, gives visual display of detected error, operates at computer speed, maintains readily available logic description of cards used, and is compatible with existing computer circuitry.
Fondrie, D. G.↗
Man-machine interactive system simplifies computer-aided circuit design
Langley interactive computerized circuit analysis capability /LICCA/ enables designer to draw electronic circuit diagrams on cathode ray tube screen. This information is submitted as input to user-selected circuit analysis program. LICCA accommodates binary logic circuits and circuits with discrete components, and monitors operator's instructions to detect errors.
Bavuso, S. J.↗
Digital fault diagnosis by low-cost arithmetical coding techniques
Error detecting and correcting codes for locating logic faults in digital computers
Avizienis, A.↗
A readily implemented single-error-correcting unit-distance counting code
Unit distance redundant counting code for single error correction or double error detection with digital equipment simplicity advantages
Kautz, W. H.↗
Standard interface definition for avionics data bus systems
Data bus for avionics system of space shuttle, noting functions of interface unit, error detection and recovery, redundancy, and bus control philosophy
Kosmala, A. L.↗
Techniques for improving reliability of computers
Modular design techniques improve methods of error detection, diagnosis, and recovery. Theoretical computer (MARCS (Modular Architecture for Reliable Computer Systems)) study deals with postulated and modeled technology indigenous to 1975-1980. Study developments are discussed.
Cater, W. C.↗
Mathematical analysis for the performance assessment of space communication parameters, IBM-360 version
Development of equations to determine communication capability of pulse or digital transmission link is discussed. Equation specifies probability detection error for one-way transmission. Analysis is conducted on IBM 360 computer using FORTRAN 4.
Grayson, L.↗
Development and testing of the infrared interferometer spectrometer for the Mariner Mars 1971 spacecraft
The design, development and testing of the infrared interferometer spectrometer is reported with emphasis on the unique features of the Mariner instrument as compared to previous IRIS instruments flown on the Nimbus meteorological research satellites. The interferometer functions in the spectral range from 50 microns to 6.3 microns. A noise equivalent radiance of 0.5 X 10 to the -7th power W/sq cm/ster/cm has been achieved. Major improvements that were implemented included the cesium iodide beamsplitter and electronic features to suppress the effect of vibration on the Michelson mirror motion and digital filtering through the summation of increased sampling of the infrared signal. A bit error detection and correction scheme was also implemented in order to recover the science data with a higher level of confidence over the telecommunication link.
Hanel, R. H.↗
A geometrical interpretation of the 2n-th central difference
Many algorithms used for data smoothing, data classification and error detection require the calculation of the distance from a point to the polynomial interpolating its 2n neighbors (n on each side). This computation, if performed naively, would require the solution of a system of equations and could create numerical problems. This note shows that if the data is equally spaced, then this calculation can be performed using a simple recursion formula.
Tapia, R. A.↗
A reliability and comparative analysis of two standby system configurations.
Equations are derived which enable one to calculate the system reliability for parallel or triple modular redundant systems with standby spares. Software error detection is introduced into the TMR/Spares system configuration in order to utilize fully all of the units. An indication of the sensitivity of the system reliability to an increase in the number of spares, partitioning, switching, variations in the powered and unpowered failures rates, and time is presented. A comparison of the parallel and the TMR/Spares system configurations, under similar conditions, is given.
Taylor, D. S.↗
Buffer control unit for computer communications
Unit provides character echoing for keyboard display, parity and syndrome generation (error detection), half or full data-packet generation, automatic retransmission of packets, and keyboard lock-up.
Okinaka, A. K.↗