Clock pulse controlled sine wave synthesizer

Claim 1

A SINE WAVE GENERATOR COMPRISING: A SOURCE OF PERIODIC CLOCK PULSES; A GENERATOR EMITTING A PLURALITY OF CONTEMPORANEOUS OUTPUT SIGNALS, THE OUTPUT SIGNALS CHANGING IN A REPETITIVE PATTERN IN RESPONSE TO THE APPLICATION OF THE CLOCK PULSES AT THE GENERATOR''S INPUT; A PLURALITY OF CONSTANT CURRENT SOURCES, THE MAGNITUDE OF CURRENT FROM ONE OF THE SOURCES BEING EQUAL TO THE MAGNITUDE OF THE COMBINED CURRENTS FROM ALL THE OTHER AFORESAID CONSTANT CURRENT SOURCES; A PLURALITY OF SWITCHES EQUAL TO THE PLURALITY OF CONSTANT CURRENT SOURCES, EACH SWITCH CONTROLLING THE FLOW OF CURRENT FROM A DIFFERENT ONE OF THE CONSTANT CURRENT SOURCES TO A COMMON SUMMING JUNCTION; BIAS MEANS CONNECTED TO THE COMMON SUMMING JUNCTION FOR PROVIDING A CURRENT EQUAL TO ONE HALF THE MAGNITUDE OF THE COMBINED CURRENTS FROM ALL THE CONSTANT CURRENT SOURCES, THE FLOW OF THE CURRENTS FROM THE CONSTANT CURRENT SOURCES BEING IN THE DIRECTION CAUSING THOSE CURRENTS TO BE ADDITIVE AT THE SUMMING JUNCTION WHEREAS THE CURRENT PROVIDED BY THE BIAS MEANS FLOWS IN THE DIRECTION CAUSING THAT CURRENT TO BE SUBTRACTIVE AT THE SUMMING JUNCTION; AND THE PLURALITY OF SWITCHES BEING OPENED OR CLOSED IN CORRESPONDENCE WITH THE PATTERN OF CONTEMPORANEOUS SIGNALS FROM THE GENERATOR WHEREBY A STEPPED WAVEFORM APPEARS AT THE SUMMING JUNCTION, THE MAGNITUDES OF THE CONSTANT CURRENTS BEING WEIGHTED SO THAT THE WAVEFORM IS CONSTITUTED BY A FUNDAMENTAL COMPONENT AND ODD HARMONICS OF HIGHER ORDER THAN THE 13TH.