Patent ID: 11934598
Assignee: EM MICROELECTRONIC-MARIN SA
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 6:
7. A displacement detection circuit configured to implement said displacement detection method according to claim 1, for a pointing device having a pixel array; said pixel array comprising a first column, a second column and a third column; said displacement detection circuit comprising:
a main calculator; said main calculator being configured to calculate the main average, said main average corresponding to the average of said pixel array;
an auxiliary calculator, said auxiliary calculator being configured to calculate the auxiliary average, said auxiliary average corresponding to the average of one column among said first column, said second column and said third column;
a comparator, said comparator being configured to compare said auxiliary average with said main average; and
a motion detector, said motion detector being configured to detect at least one direction of displacement of the pointing device.