Electrical transmission or interconnection systems – Nonlinear reactor systems – Parametrons
Patent
1984-10-01
1987-01-06
Miller, Stanley D.
Electrical transmission or interconnection systems
Nonlinear reactor systems
Parametrons
328 15, 328 20, 328156, 307529, 307271, 307266, 307498, G06G 716, H03K 3017
Patent
active
046349871
ABSTRACT:
VLF communication signals encoded in MSK format contain phase ambiguities that must be resolved in order to use such signals in navigation systems. The ambiguities are resolved by the present frequency multiplying device that in one embodiment operates to double the frequency of an input signal and mix the doubled input signal with a mixing signal to produce an output signal having first and second states. The device includes a transition detector (42) for generating a trigger signal in response to each low-to-high or high-to-low transition of the input signal that occurs when the output signal is in its second state, and a bistable circuit (44) for generating the output signal in response to the trigger signal and to a mixing signal. The bistable circuit responds to the trigger signal to cause the output signal to be in its first state, and responds to a periodic characteristic of the mixing signal to cause the output signal to be in its second state. The transition detector may comprise a positive edge triggered flip-flop (50) and a negative edge triggered flip-flop (52). The bistable means may comprise a third flip-flop (56) having the mixing signal connected to its clock input and the trigger signal connected to its clear input. The frequency doubling device may also include means (58) for selectively disabling the second flip-flop so that the frequency of the input signal is not doubled.
REFERENCES:
patent: 3448387 (1969-06-01), Brandt et al.
patent: 3588548 (1971-06-01), Williams
patent: 3745470 (1973-07-01), Grob
patent: 3764927 (1973-10-01), Allinger et al.
patent: 3770327 (1973-11-01), Ruof
patent: 3786357 (1974-01-01), Belle Isle
patent: 3796960 (1974-03-01), Frizzell et al.
patent: 3838344 (1974-09-01), Tanimoto
patent: 3866129 (1975-02-01), Cornellssen
patent: 4042834 (1977-08-01), Pace
patent: 4048571 (1977-09-01), Jacobson
patent: 4051386 (1977-09-01), Long et al.
patent: 4052626 (1977-10-01), Tuma et al.
patent: 4077010 (1978-02-01), Ryon
patent: 4540945 (1985-09-01), Kuroki
"Digital Multiplier", by Lawrence N. Merson, RCA Technical Notes, No. 736, Jan. 1968.
Miller Stanley D.
Roseen Richard
Sundstrand Data Control Inc.
LandOfFree
Frequency multiplier does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Frequency multiplier, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Frequency multiplier will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-686712