Patent ID: 8253546

Claim:
A non-equal bin width histogrammer, comprising: a thermal meter decoder for translating a thermal-meter code into a one-hot code; and a magnitude comparator based content addressable memory for providing the thermal-meter code, the magnitude comparator based content addressable memory comprising: a bit line for providing a complement of a non-least bit of a first data; a memory compare cell comprising: a plurality of non-least comparator cells, each comprising: a first transistor having a source; a second transistor having a source and a drain, wherein the drain of the second transistor is electrically connected to the source of the first transistor, and the source of the second transistor is electrically connected to a ground terminal; a third transistor electrically connected to the first transistor; and a fourth transistor electrically connected to the first transistor and the third transistor; and a memory cell electrically connected to the bit line for storing the complement of the non-least bit of the first data and for providing a non-least bit of a second data; and a word line electrically connected to the memory cell for enabling the memory cell to store the complement of the non-least bit of the first data; and a P-channel transistor having a gate, a source, and a drain, wherein the source of the P-channel transistor electrically connected to a supply terminal, the gate of the P-channel transistor is electrically connecting the ground terminal, and the drain of the P-channel transistor is electrically connected to the third transistor of the first comparator cell.