Patent ID: 11942152
Assignee: YOSHINORI OKAJIMA
Field: Computer technology (Electrical engineering)
Classification: CPC G | IPC G

Claim 11:
12. The approximate search circuit according to claim 1, wherein the matching degree determination circuits further comprises:
a third storage circuit including a plurality of second activation signal lines, a plurality of second detection lines, and a plurality of unit storage circuits,
a plurality of detection line current read circuits, and
an activation line driving circuit for driving the second activation signal lines, wherein
when counting the number of pulses from the detection lines generated based on data of the memory cells in the first storage circuit and signals through the activation signal input lines, the counting circuit uses signals generated by the corresponding detection line current read circuit whose reference current is given through the corresponding second detection line generated based on the data of the memory cells in the second storage circuits and signals through the second activation signal lines.