Switched capacitor networks for focal plane image processing systems. - Christopher B. Umminger; Charles G. Sodini (IEEE Trans. Circuits Syst. Video Technol., 1992)

Integrated analog focal plane processing for automatic alignment. - Christopher B. Umminger (1995)

An integrated analog sensor for automatic alignment. - Christopher B. Umminger; Charles G. Sodini (IEEE J. Solid State Circuits, 1995)