Accession Number : ADD002464

Title :   High-Frequency CCD Adder and Multiplier.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON D C

Personal Author(s) : Lagnado,Isaac

Report Date : 26 Feb 1976

Pagination or Media Count : 18

Abstract : The patent application describes a device for implementing the arithmetic operations of addition and multiplication utilizing CCD concepts and MOSFET properties. First and second CCD channels convert first and second input voltages into first and second charge quantities, respectively. The first and second charge quantities are added in a third CCD channel to provide a third charge quantity linearly proportional to the sum of the first and second input voltages. The three charge quantities are sensed by three floating gate amplifiers operated in the saturation region. The outputs of the floating gate amplifiers are subsequently combined by a differential amplifier, the output of which is linearly proportional to the product of the first and second input voltages.

Descriptors :   *Arithmetic units, *Charge coupled devices, Metal oxide semiconductors, Field effect transistors, Diodes, Electrodes

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE