3582780 is referenced by 5 patents and cites 2 patents.

A phase measuring and monitoring circuit adapted to measure the phase difference between a reference signal and a monitored signal having a counter switchable to either an add or substract mode, the input to which is a sequence of measured pulses controlled by a filter and zero-crossing detector, the inputs of which are time-shared by the reference signal and the signal to be measured.

Title
System responsive to change of phase between two electrical waves
Application Number
04/784,593
Publication Number
3582780
Application Date
December 18, 1968
Publication Date
June 1, 1971
Inventor
Hole Godfrey W
Assignee
Amalgamated Wireless
IPC
G01r 25/00
G01R 23/00
G01S 01/30
G01S 01/00
View Original Source