Pierre Mertz

The Resolving-Power Functions and Quantum Processes of Television Cameras

The extensive paper by O. H. Schade, Sr., (RCA Review, vol. 28, pp. 460–535, September 1967) is summarized. The resolving power of an imaging system is described in terms of a series of “resolving power functions”; these relate the resolution to the exposure as a critical variable. The successive functions vary as a number of other significant parameters are changed. The treatment permits prediction of resolving power performance of TV camera and other imaging systems under a variety of operating conditions. Experimental confirmation of the analysis is mentioned.

Information theory impact on modern communications

THERE ARE TWO ASPECTS to the development of communications systems (as there are to the development of many other systems). The first is the invention of the fundamental equipment. The second aspect is the analytical study of the use to be made of this equipment, namely, of the transmission medium in which the equipments are to work, and the engineering of the component parts to give an optimum result.