Methods of Converting Voltages into Binary Codes

摘要

This paper describes some new methods of coding in which the principles of time conversion and sequential binary weighing are combined. The application of a piecewise-linear voltage formed by a d-c integrator with logical time control forms the basis of several methods of coding electrical potentials. One of these methods is based on sequential binary quantization of time intervals and conversion from a time to an amplitude parameter. In a compound convertor one portion of which forms the top digits of the code by the proposed method and the second the lowest digits by the usual method of time conversion, achieves a manifold increase in coding time with an insignificant increase in equipment. The basic instrument error of the compound convertor results from the characteristics of the coding method, does not exceed the corresponding error in time convertors. Application of the principle of logical control by a d-c integrator in the time scale makes it possible to obtain linearly broken voltages of most diverse form which may be used in complex scanning devices, in literal indication schemes, cathode ray tubes, and in a number of other cases. (Author)