Abstract: Color filter array demosaicing as is useful in digital cameras, still and video, using a single sensor includes blending of directional and non-directional interpolations. Directional interpolation uses edge detection with lowpass filtering with neighboring pixels for erroneous detection correction.

Abstract: A signal transfer circuit appropriate for use in realizing both high circuit stability and high current driving ability is disclosed. Signal transfer circuit A has current transfer circuit 3 that transfers a signal current via first reference current I1. In one embodiment, current transfer circuit 3 has current transcription circuit 30 that transcribes signal current Is to first current portion I1-1 of first reference current I1, and output current path 32 that transfers the first current portion I1-1. In one embodiment, current transfer circuit 30 has first current branching circuit 300 and second current branching circuit 302.

Abstract: Dummy stacks, each providing a common point of connectivity potentially across all metal layers, are incorporated along with the functional block in an integrated circuit. When the connectivity of elements of the functional block need to be changed later, the dummy stacks enable masks, which would otherwise need to be redesigned, to be further redesigned to obtain the desired connectivity. As a result, the redesign of some of the other masks, may be avoided, thereby reducing the total number of masks which would need to be redesigned while effecting a change in the connectivity of elements in a functional block.