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7532751 |
Apparatus and computer readable medium for setting up multi-dimensional DDA variables
An apparatus and a computer program product render a multi-dimensional digital image using raytracing in a multi-dimensional space. A multi-dimensional digital differential analyzer (DDA) is...
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7403989 |
Facilitating improved workflow
Systems and techniques to improve workflow using worksets. In general, in one implementation, the technique includes: providing a data object directed to a particular work role. The data object...
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7366345 |
Method of setting up multi-dimensional DDA variables
A method, an apparatus, and a computer program product render a multi-dimensional digital image using raytracing in a multi-dimensional space. Variables of a multi-dimensional digital differential...
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7260658 |
Verifying input/output command data by separately sending data to be written and information about contents of the data
Techniques for verifying input/output (I/O) command data are provided. Information about the contents of the data are specified in the I/O command. After an application issues the I/O command, a...
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6947056 |
Low power, variable precision DDA for 3D graphics applications
An apparatus generally having a register, an adder circuit and a mask circuit is disclosed. The register may be configured to replace a current value with a new value in response to a clock value....
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6510442 |
System and method for improved digital differential analyzer
A digital differential analyzer (DDA) is described that avoids using comparisons, and instead uses shifts, multiplies, and adds. Shifts are less costly to use in terms of processor time, and...
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5157621 |
Circuit and method for forming pulse train output in response to carry/borrow output of count pulse train
A circuit and method for forming a pulse train output in response to a carry/borrow signal from a calculation of an input pulse train are disclosed in which a plurality of sign-less...
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4692887 |
Circle and circular arc generator
A circle and circular arc generator has a digital differential analyzer (DDA) for receiving coordinates on and a radius of a circle having its center at a specific point and for generating x and y...
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4586037 |
Raster display smooth line generation
A high speed arrangement for generating smooth lines of consistent thickness regardless of slope in a raster type display system such as a computer graphics system. A digital differential analyzer...
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4563749 |
Floating point digital differential analyzer
In a floating point digital differential analyzer, multiplication and division of constants are carried out by an adder which truncates a summation SDY i of l secondary increments calculated by...
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4493032 |
Method and apparatus for positioning using circular interpolation
A method and apparatus are disclosed for providing very precise incremental motion of a numerically controlled machine tool, or other similarly controlled object, along a circularly arced path. For...
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4414640 |
Arithmetical method for digital differential analyzer
A method of operation of a digital differential analyzer for performing the operation: ##EQU1## where Y is an integrand, ΔY is an increment of an input variable, R is a residue of the integrated...
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4387327 |
Numerical control system for a crankshaft milling machine integral interpolators
Serving to control at least two pulse-controlled drive means for moving a tool along respective coordinate axes, the control system comprises input means for presenting workpiece data and tool...
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4365309 |
Digital differential analyzing processor
A digital differential analyzer (DDA) is connected through a direct memory access bus (DMA bus) to a host processor so as to receive an operation defining parameter and data, thereby to process a...
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4345500 |
High resolution musical note oscillator and instrument that includes the note oscillator
A musical note oscillator producing notes at musical intervals having high resolution and high frequency stability achieved with an economy of components and control signals. The oscillator may be...
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4323978 |
Arithmetic element based on the DDA principle
According to the DDA technique, incremental signals are processed which usually consist of two separate signals for value and sign. An arithmetic element then comprises at least one register and...
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4293918 |
Digital differential analyzer with an increment output function
A digital differential analyzer has a Y register, an adder, an arithmetic logic unit, an R register, a logic circuit for producing increments, and incremental registers. These circuit components...
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4257000 |
Apparatus for controlling the length of movement of a controlled member along a path of repeated operating positions
An apparatus for controlling the length of movement of a controlled member along a path of repeated operating positions. The apparatus comprises a function generator with an axis digital integrator...
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4174489 |
Phase discriminator in a receiver for a data transmission system
Phase discriminator in a receiver of a system for data transmission by means of phase modulation of a carrier. The phase discriminator comprises a calculating unit arranged for receiving digital...
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4125897 |
High speed pulse interpolator
A D.D.A. (Digital Differential Analyzer) for pulse interpolation having a memory counter with more than two bit positions for counting the number (m) of input instruction pulses in each...
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4106100 |
Digital differential analyzer
A digital differential analyzer comprises an arithmetic unit for performing an integration operation, a control unit for controlling the arithmetic unit, a plurality of temporary storage means in...
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3964443 |
Digital engine control system using DDA schedule generators
A first pair of DDAs for interpolating along a predetermined MAP-RPM-Fuel schedule for an internal combustion engine and a second pair for iterpolating along a predetermined MAP-TEMP-ENRICH...
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3955061 |
High frequency power distribution and control system
This disclosure describes power distribution with the use of semiconductor switches. A digital differential analyzer (DDA) selectively switches integer cycles of a generator into a load demand...
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3934130 |
Digital differential analyzer
An improved digital differential analyzer (DDA) circuit wherein the output pulses, representing incremental changes of an integral, are generated at a rate as determined by a remainder size number....
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3763358 |
INTERWEAVED MATRIX UPDATING COORDINATE CONVERTER
A coordinate converter system for high speed and accurate updating of a direction cosine matrix which describes the relative orientation of one orthogonal coordinate frame such as a body frame to...
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3748440 |
BALLISTIC TRAJECTORY COMPUTER
A real-time system is provided for calculating in less than about 40 msec. of actual time the ballistic time of fall and range of a weapon from a known altitude above a target using weighted clock...
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3701890 |
DIGITAL DIFFERENTIAL ANALYZER EMPLOYING MULTIPLE OVERFLOW BITS
An arrangement for increasing the frequency of the occurrence of overflow from a digital differential integrator (DDI) is provided by deriving multiple bits in the form of a binary number from the...
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3694632 |
AUTOMATIC TEST EQUIPMENT UTILIZING A MATRIX OF DIGITAL DIFFERENTIAL ANALYZER INTEGRATORS TO GENERATE INTERROGATION SIGNALS
In computer-controlled automatic test or check-out equipment, interrogation signals for application to a unit under test are generated by a matrix of digital differential analyzer integrators, the...
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3679879 |
SYSTEM FOR GENERATING SPEED PATTERN FOR SPEED CONTROL OF MOVING BODY
A system for generating a speed pattern for the speed control of a moving body comprising a first register which is preset with the total variation of time including the time required when the...
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3671723 |
DEVICE FOR COORDINATE CONVERSIONS
This invention relates to a coordinate converting device for the determination of the coordinates of a moving body with respect to a couple of stationary axes, the values of the distance increments...
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3670154 |
PARALLEL DIGITAL DIFFERENTIAL ANALYZER
The specification discloses a parallel digital differential analyzer employing a first register, a circulating adder and a plurality of JK flip-flops for updating the adder, the flip-flops being...
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3644723 |
CIRCULAR INTERPOLATION SYSTEM
An operational integrator comprising an integrand register and an accumulator register, a pulse code unit for supplying four series of pulses and a carry pulse to transfer the numbers stored in...
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3633002 |
INTEGRATOR FOR USE IN DIGITAL DIFFERENTIAL ANALYZER SYSTEMS
An integrator employing a trapezoidal integration algorithm for use in digital differential analyzer systems. Reversible computation is achieved with respect to each integrator of the system as...
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3601591 |
DIGITAL DIFFERENTIAL ANALYZER EMPLOYING COUNTERS CONTROLED BY LOGIC LEVELS
Data processing equipment wherein the registers are interconnected to perform the functions of analog computing loops, a sequencer unit consisting of a plurality of programmable registers responds...
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3598974 |
PROGRAMMABLE DIGITAL DIFFERENTIAL ANALYZER INTEGRATOR
A programmable digital differential analyzer integrator which contains storage and logic circuits for changing its effective interconnections with other similar units merely by changing the...
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3590231 |
DIGITAL SIGNAL GENERATOR USING DIGITAL DIFFERENTIAL ANALYZER TECHNIQUES
A signal generator capable of generating triangular and sine functions in a ipolar mode. The combination of a counter, adder and accumulator register make up a computing unit which is controlled by...
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3586837 |
ELECTRICALLY ALTERABLE DIGITAL DIFFERENTIAL ANALYZER
An arrangement is provided in which the inputs and outputs of digital differential analyzer integrators are interconnected under program control by encoding and decoding the incremental dz...
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3578959 |
DIGITAL RESOLVER WITH ALTERNATELY PHASED DIGITAL DIFFERENTIAL ANALYZERS
A resolver is described for transforming position vectors from polar to Cartesian coordinates and resolving such vectors into orthogonally related components defined by sine and cosine functions of...
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3564223 |
DIGITAL DIFFERENTIAL ANALYZER
A digital differential analyzer is arranged to compute the sum of the first n terms of a Taylor series representing a function of an independent variable where n is an odd integer greater than...
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3514584 |
TERNARY DIGITAL COMPUTER CIRCUITS
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3506812 |
CIRCULAR INTERPOLATION SYSTEM
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3490019 |
TIME COINCIDENT PRECISION HEIGHT DETERMINING SYSTEM
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3419711 |
Combinational computer system
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3412239 |
Algebraic-integration inertial navigation system
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3327102 |
Computing system
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3313925 |
Digital differential analyzer
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3274376 |
Digital differential analyzer in conjunction with a general purpose computer
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3230357 |
Device for the sequential fill of information into digital differential analyzer
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3155816 |
Digital computer
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3148273 |
Incremental differential analyzer
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