Abstract: An analog to digital converter simultaneously digitizes a gamma corrected analog video signal and removes the gamma correction. The converter has a plurality of parallel analog comparators which compare the video signal amplitude with the amplitude of a plurality of different reference signals, each comparator providing an output representative of the respective comparison result. Each reference signal amplitude is a different multiple of a fraction, of a common reference signal, raised to the gamma power thereby removing the gamma correction. A decoder responsive to the output of the comparators generates the digital output signal in a preselected digital code.

Abstract: A memory system of an array of memory elements arranged in an electrical matrix of rows and columns. Each memory element comprises a bistable circuit of two bipolar transistors. Holding current flows through the on transistor of each memory element of a row from a common current source to a common line. When a memory element is switched so that is transistors reverse operating conditions, the holding current flow through the memory element is diverted during the transition. A clamping arrangement of a transistor and associated resistance is connected between the common current source and the common line of each row. When all of the memory elements of a row are switched at the same time the clamping arrangement provides an alternative controlled current path for the diverted holding currents.

Abstract: An analog to digital converter includes a first parallel comparator network receiving the analog signal and continuously producing the most significant bits of the digital signal, a subtractor for removing from the analog signal the amplitude portion corresponding to the most significant bits, a second parallel comparator receiving the modified analog signal and continuously producing the least significant bits of the digital signal, and a sampling buffer responsive to a sampling pulse to provide the digital signal only at the occurrence of the sampling pulse.