Accession Number : ADD013099

Title :   Converter for Converting a High Frequency Video Signal to a Digital Signal.

Descriptive Note : Patent, Filed 23 Nov 77, patented 8 Jul 80,

Corporate Author : DEPARTMENT OF THE NAVY WASHINGTON DC

Personal Author(s) : Clark,Ronald L ; Kreeger,John L

Report Date : 08 Jul 1980

Pagination or Media Count : 6

Abstract : A converter for converting a high frequency video input signal to a digital signal by detecting the peak voltages of the input signal. A video input signal fans out to a plurality of comparators of which each are connected to a resistive ladder of equal resistors values. One end of the resistive ladder is connected with a positive reference voltage and the other end is connected with a negative reference voltage. Real time is divided into sampling bins determined by the cycle time of a clock and, within each bin, the digital output from a plurality of master-slave flip-flops shows the maximum level reached by the video input signal. The outputs from the flip-flops go to a pair of priority encoders and a multiplexer for indicating in digital form the highest point reached on the resistive ladder.

Descriptors :   *PATENTS, *DIGITAL SYSTEMS, COMPARATORS, RESISTORS, INPUT, SIGNALS, VOLTAGE, PEAK VALUES, REAL TIME, CYCLES, HIGH FREQUENCY, VIDEO SIGNALS, MULTIPLEXING, CODERS, SAMPLING

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE