Charge-coupled imaging device camera provided with such an imaging device
AssigneeU.S. Philips Corporation
InventorsMichael A. W. Stekelenburg, Hermanus L. Peek, Colm J. Sweeney, Alouisius W. M. Korthout
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AssigneeU.S. Philips Corporation
InventorsMichael A. W. Stekelenburg, Hermanus L. Peek, Colm J. Sweeney, Alouisius W. M. Korthout
Estimating the term…
A 3-phase charge-coupled imaging device is operated in the interlace mode. During integration, voltages are applied to the clock electrodes such that charge is integrated below the same set of electrodes each time. The signal charges of the first field are formed in that 3/4 portion of the charge in each picture element is augmented by 1/4 portion of the charge of the preceding picture element, while the signal charges of the second field are formed in that the 3/4 portion is augmented by 1/4 portion of the charge generated in the following picture element. These summations may be carried out in the sensor itself in that the charge packages are shifted to the left and right during integration. The flicker which is usually the result of interlacing is very strongly reduced in this way.
A 3-phase-coupled imaging device comprising a row of clock electrodes situated above a charge transport channel defined in a semiconductor body, clock voltage means for applying clock voltages to the clock electrodes, said clock voltage means applying equal voltages to the clock electrodes during two integration periods during at least the major portion of their duration, means for forming a first raster of charge packages containing information by summation of at least a 3/4 portion of the charge which is generated in one of the integration periods in a picture element i and at most a 1/4 portion of the charge which is generated in the preceding picture element (i-1), and means for forming a second raster by summation of at least a 3/4 portion of the charge which is generated in a picture element i in the other integration period and at most a 1/4 portion of the charge generated in the following picture element (i+1), said picture elements (i-1), i and (i+1) all being originated within said charge transport channel, to achieve vertical interlacing with interlace lines at equal distances, and wherein potential barriers which separate the charge packages from one another are formed below a third electrode.
Dependencies are inferred from the claim text.