Linear interpolator
OwnerVladimir S. Borisov, Vyacheslav V. Korovininventors
Life of this patent
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Abstract
A linear interpolator comprising a code digital normalization unit, connected via digital-to-analog converters to comparators which couple an adjustable reference voltage source, and also connected via an OR gate to an integrator that connects said digital-to-analog converters having their outputs coupled respectively to X- and Y-axis voltage-to-frequency converters, the latter being connected to control circuits of actuation means.
Claims1
A linear interpolator to provide for conversion of codes representing X- and Y-axis increments obtainable from an external data source to corresponding trains of pulses applied to control circuits of first and second actuation means comprising:
- a code digital normalization unit;
- shift registers of said unit;
- an input and an output of each of said shift register;
- said inputs of said shift registers connected to said external data source;
- first and second digital-to-analog converters to convert digital data to analog voltage each having a first input, a second input, and an output, said second inputs being joined together;
- respective ones of said inputs of said digital-to-analog converters connected to said outputs of said shift registers of said code digital normalization unit;
- an adjustable reference voltage source having an output;
- first and second comparators to compare output voltages from said digital-to-analog converters to a reference voltage each having a first input, a second input, and an output;
- said first inputs of said comparators joined together and connected to said output of said adjustable reference voltage source;
- said second inputs of said comparators connected respectively to said outputs of said digital-to-analog converters;
- an OR gate having a first input, a second input and an output, said first and second inputs being connected to said second joined inputs of said digital-to-analog converters producing reference voltages;
- an X-axis voltage-to-frequency converter to convert analog voltage to trains of output control pulses having an input and an output which are connected respectively to the output of said first digital-to-analog converter and the control circuit of said first actuation means;
- an Y-axis voltage-to-frequency converter having an input and an output which are connected respectively to the output of said second digital-to-analog converter and the control circuit of said second actuation means.
Dependencies are inferred from the claim text.