Accession Number : AD0164614

Title :   Digital Bit Synchronizer.

Descriptive Note : Patent Application,

Corporate Author : DEPARTMENT OF THE AIR FORCE WASHINGTON D C

Personal Author(s) : Natali,Francis D.

Report Date : 14 JUL 1972

Pagination or Media Count : 11

Abstract : The patent application describes a system for deriving synchronizing pulses from a train of digital signals that is fed to in-phase and mid-phase gates each including an adder with a delay feedback. The output of the mid-phase gate is multiplied by a sign factor determined by a logic circuit connected to the in-phase gate. The output of the two gates are then mixed, filtered, and summed with a value dependent upon the clock rate and fed to a number controlled oscillator which includes a counter and a comparing circuit. The output of the number controlled oscillator is fed back to the in-phase and mid-phase gates.

Descriptors :   *Synchronization(Electronics), Patents, Synchronism, Circuits, Digital systems, Signals, Phase locked systems, Logic circuits

Subject Categories : Electrical and Electronic Equipment

Distribution Statement : APPROVED FOR PUBLIC RELEASE