Abstract: A system may include a first integrated circuit package including a first integrated circuit die and a first integrated circuit package substrate defining a first plurality of openings, a second integrated circuit package including a second integrated circuit die and a second integrated circuit package substrate defining a second plurality of openings, and a third substrate comprising a plurality of conductive projections. Each of the plurality of conductive projections may be disposed within a respective one of the first plurality of openings and a respective one of the second plurality of openings.

Abstract: An iris circuit of a video camera which can automatically adjust opening and shutting of the iris of a camera lens according to the magnitde of a NAM (non additive magnitude) signal provided by taking out the highest value from the peak values of R,G and B color video signals. The iris circuit includes means for detecting each of the peak value and the means value of the NAM signal, and mean for combining the peak value and the mean value for providing an iris driving voltage so that the iris may be open or shut according to the magnitude of the NAM signal.