Method and apparatus for monitoring an alternating signal

Details Method and apparatus for monitoring an alternating signal Method and apparatus for monitoring an alternating signal

1993-09-20

1999-01-05

Callahan, Timothy P.

Miscellaneous active electrical nonlinear devices, circuits, and

Specific signal discriminating without subsequent control

By amplitude

327 74, 327 76, 327175, H03K 5153

Patent

active

058567518

ABSTRACT:
An arrangement for monitoring an alternating signal with respect to its state as mark-to-space ratio or direct-current component, in which the alternating signal is modified so that its mark-to-space ratio or direct-current component can be detected by simple comparison with reference signals. Various information is then transmitted over a line, and the operation of the stage that generates the alternating signal can also be monitored.

REFERENCES:
patent: 3579125 (1971-05-01), Lindblad
patent: 3725795 (1973-04-01), Mesenhimer
patent: 4011507 (1977-03-01), Rossell
patent: 4424458 (1984-01-01), Buck et al.
patent: 4443787 (1984-04-01), Denk et al.
patent: 4529892 (1985-07-01), Reilly et al.
patent: 4823227 (1989-04-01), Grant
patent: 4859872 (1989-08-01), Hyakutake
patent: 5196937 (1993-03-01), Kageyama

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