Patent ID: 11927689
Assignee: TEXAS INSTRUMENTS INCORPORATED
Field: Measurement (Instruments)
Classification: CPC G | IPC G

Claim 9:
10. A method, comprising:
shifting data samples of a return target detection signal through a shift register of target detection circuitry, wherein the shift register includes a cell under test (CUT), a first number of left window cells left of the CUT, and a second number of right window cells right of the CUT;
computing a first rank of a first incoming data sample entering the left window cells, and computing a second rank of a second incoming data sample entering the right window cells;
updating a sorted index array that contains respective ranks of data samples of the left and right window cells based on the first rank, the second rank, a third rank of a first outgoing data sample exiting the left window cells, and a fourth rank of a second outgoing data sample exiting the right window cells, including inserting the first rank and the second rank into positions of the sorted index array and removing the third rank and the fourth rank from positions of the sorted index array; and
comparing the data sample in the shift register corresponding to the Kth rank in the sorted index array to a test data sample of the returned target detection signal.