Patent ID: 7068317

Claim:
A photoelectric conversion apparatus comprising: a sensor array for receiving reflected light from an object; a first transfer unit arranged to transfer signals from said sensor array; and a ring-shaped second transfer unit arranged to integrate the signals from said first transfer unit, wherein said first transfer unit continuously transfers first signals from said sensor array in a light projection ON state to said ring-shaped second transfer unit, and alternately continuously transfers second signals from said sensor array in a light projection OFF state to said ring-shaped second transfer unit, at different timings respectively, wherein a transfer frequency of said ring-shaped second transfer unit is higher than that of said first transfer unit, wherein said second transfer unit comprises a skimming unit arranged to determine skimming on the basis of the second signal, and a pixel for which skimming is determined performs skimming by a combination of light projection ON and OFF states, and wherein skimming is inhibited when a light projection OFF signal goes ahead of a light projection ON signal in integration of the signal in said second transfer unit.