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1. WO1990014711 - A CHANNEL FREQUENCY GENERATOR FOR USE WITH A MULTI-FREQUENCY OUTPUT GENERATOR

Publication Number WO/1990/014711
Publication Date 29.11.1990
International Application No. PCT/US1990/002695
International Filing Date 18.05.1990
Chapter 2 Demand Filed 19.12.1990
IPC
H03D 7/16 2006.01
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
7Transference of modulation from one carrier to another, e.g. frequency-changing
16Multiple frequency-changing
H04N 7/10 2006.01
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
10Adaptations for transmission by electrical cable
CPC
H03D 7/163
HELECTRICITY
03BASIC ELECTRONIC CIRCUITRY
DDEMODULATION OR TRANSFERENCE OF MODULATION FROM ONE CARRIER TO ANOTHER
7Transference of modulation from one carrier to another, e.g. frequency-changing
16Multiple-frequency-changing
161all the frequency changers being connected in cascade
163the local oscillations of at least two of the frequency changers being derived from a single oscillator
H04N 7/10
HELECTRICITY
04ELECTRIC COMMUNICATION TECHNIQUE
NPICTORIAL COMMUNICATION, e.g. TELEVISION
7Television systems
10Adaptations for transmission by electrical cable
Applicants
  • SCIENTIFIC ATLANTA, INC. [US]/[US]
Inventors
  • MCKINNEY, Larry, S.
  • PIDGEON, Rezin, E., Jr.
Agents
  • POTENZA, Joseph, M.
  • ALTENBURG, Udo, W.
Priority Data
354,27719.05.1989US
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A CHANNEL FREQUENCY GENERATOR FOR USE WITH A MULTI-FREQUENCY OUTPUT GENERATOR
(FR) GENERATEUR DE FREQUENCES DE CANAUX UTILISE AVEC UN GENERATEUR DE SORTIES MULTIFREQUENCES
Abstract
(EN)
An apparatus and method is disclosed which phase locks a frequency-agile modulated output signal to any selected channel of a comb generated output (25). The phase error of an input signal (14) is tracked, the input signal is modulated up to a carrier output frequency, and the modulated output frequency is locked to the comb generator (10) output by subtracting the input signal and negating the phase error.
(FR)
L'invention concerne un procédé et un appareil qui effectuent le verrouillage en phase d'un signal de sortie modulé agile en fréquence sur n'importe quel canal sélectionné d'une sortie (25) d'un générateur du type à peigne. L'erreur de phase d'un signal d'entrée (14) est poursuivie, le signal d'entrée est modulé sur une fréquence de sortie porteuse et la fréquence de sortie modulée est verrouillée sur la sortie du générateur du type à peigne en soustrayant le signal d'entrée et en effectuant une inversion logique de l'erreur de phase.
Also published as
FI915439
NO19914508
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