Digital control system
AssigneeRCA Corporation
InventorKenneth Rau Woolling, Jr.
Life of this patent
Estimating the term…
Abstract
Remote control signals actuate digital circuitry suitable for controlling the volume of an audio amplifier. A digital counter either increases or decreases in count corresponding to a desired volume control level. Circuitry associated with the counter causes an audio amplifier control voltage derived therefrom to increase at a first rate of change in response to a predetermined range of counter output and at a second rate of change corresponding to a second predetermined range of counter output.
Claims4
Apparatus responsive to transmitted remote control signals for providing a control voltage suitable for controlling the gain of a voltage controlled amplifier comprising:
- receiving means responsive to said transmitted control signals for providing actuating signals;
- pulse generating means responsive to said actuating signals for providing a series of output pulses;
- counting means responsive to pulses from said generating means for providing numerical representative binary coded output signals;
- digital-to-analog converter means responsive to signals from said pulse responsive means for providing an output voltage level representative of said binary coded signals;
- and
- means responsive to said output voltage level from said converter means for providing a modified output voltage having a first rate of change with respect to said numerical representative signals for output voltage levels of a first voltage range and a second rate of change with respect to said numerical representative signals for output voltage levels of a second voltage range.
Dependencies are inferred from the claim text.