System and Method for Gesture Sensing

A gesture detection system comprising:

• a gesture sensor comprising:
• a radio frequency (RF) receiver configured to receive reflected signals from a target in three-dimensional space;
• an analog-to-digital converter (ADC) coupled to the RF receiver, the ADC configured to convert the reflected signals to sensor samples;
• a number generator configured to produce a verification sequence;
• a multiplexer having inputs and an output, the inputs coupled to the number generator and the ADC;
• a master logic unit coupled to the multiplexer, the master logic unit configured to select the number generator or the ADC with the multiplexer;
• a first memory coupled to the output of the multiplexer, the first memory configured to store values from the multiplexer, the values being the sensor samples when the ADC is selected, the values being the verification sequence when the number generator is selected;
• and
• a first digital interface coupled to the first memory, the first digital interface configured to transmit the values stored in the first memory.

A method comprising:

• generating a verification sequence at a gesture sensor, the verification sequence having a first quantity of repetitions of a numeric sequence;
• receiving the verification sequence at an application processor over a digital interface;
• accessing a copy of the numeric sequence;
• correlating the verification sequence with the copy of the numeric sequence;
• counting a second quantity of correlations between the copy of the numeric sequence and the verification sequence;
• and
• adjusting a parameter of the digital interface in response to the first quantity of repetitions not equaling the second quantity of correlations.