US4380006A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Linear interpolator
Assignee: Individual
•
Filing: 1981-06-08
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Granted: 1983-04-12
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Expires: 2001-06-08
Abstract
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.
Inventors
- 👤 Vladimir S. Borisov
- 👤 Vyacheslav V. Korovin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-04 20:29
CPC Classifications
G; G06; G06J; G06J1/00
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
294 words
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.
Claim 2
Dependent Claim
294 words
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.
References Cited (Backward Citations)
US4125896A
Cited
US4296407A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1986-04-11 | 1986-10-11 | 1987-04-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-11 | 1990-10-11 | 1991-04-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-11 | 1994-10-11 | 1995-04-12 | $7700.00 | Window Closed / Lapsed |