Patent ID: 7884310

Claim:
A pixel device in a semiconductor substrate (SUB 1 ; SUB 10 ) adapted to detect and/or demodulate an incident modulated electromagnetic wave field, comprising: detection means ( 1 ) for converting the incident electromagnetic wave field into an electric signal of flowing charges, sampling means (LG, MG, RG, IG 1 , DG 1 , IG 2 , DG 2 ; GS, DG 10 , IG 10 , DG 20 , IG 20 ) for sampling the electric signal of flowing charges at least two different time intervals within a modulation period, at least two output nodes (D 1 , D 2 ; S 1 , S 2 ) for electric signals sampled by the sampling means, demodulation means ( 4 ) comprising the at least two output nodes and the sampling means, the sampling means having second transfer means (LG, MG, RG; GS), and a contact node (K 2 ) arranged between the detection means and the demodulation means, the detection means ( 1 ) comprise first transfer means (GM 1 ; GM 1 . i ; FGi; FDi; VGi), the first transfer means are adapted to transfer the electric signal of flowing charges to the contact node, and the second transfer means are adapted to transfer the electric signal of flowing charges from the contact node during each of the at least two time intervals to the at least two output nodes allocated to the respective time interval.