Optical signal transmission system including pulsed FM modulator

Details Optical signal transmission system including pulsed FM modulator Optical signal transmission system including pulsed FM modulator

1987-12-22

1990-05-22

Griffin, Robert L.

Telecommunications

Receiver or analog modulated signal frequency converter

Signal selection based on frequency

332112, 34082564, 375 23, H04B 900

Patent

active

049283189

ABSTRACT:
In the pulsed FM system, the input signal is first modulated into the pulse FM signal. Thereafter, this pulse FM signal is modulated into the pulsed FM signal by the frequency divider. This pulsed FM system is suitable to CATV.

REFERENCES:
patent: 4399564 (1983-08-01), Cowen
patent: 4435682 (1984-03-01), Boudault et al.
Sato et al-"Pulse Interval and Width Modulation"-IEEE Trans. on Cable Television-vol. CATV-3 #4 Oct. 1978 pp. 165-173.
Yoneda et al-"Optical Fiber Versatile Transmission"-Review of Elec. Comm. Labs. vol 27 #11-12-(Nov.-Dec. 1979) pp. 936-948.
Pouliot-Have You Considered V/f Converters?-Analog Dialogue 9-3 1975-pp. 6-9.
Winkel et al-The Art of Digital Design-Prentice Hall, Englewood Cliffs, N.J.-1980 pp. 118-122, 143.
NEW ELECTRONICS, vol. 9, No. 13, Jun. 29, 1976, pp. 91-92, London, GB; D. Dyer: "v/F and F/V converters" * p. 91, left-hand col., lines 18-50; FIGS. 1,2,3 *.
NTG-Fachberichte Issls 80, The International Symposium on Subscriber Loops and Services, Munich, Sep. 15-19, 1980, vol. 73, pp. 228-232, VDE-Verlag Gmbh, Berlin, DE; D. J. Brace et al.: "Optical fibre transmission in the BPO local distribution network" * p. 230, right-hand col., lines 1-30; FIG. 6 *.
ELEKTRONIK, No. 6, 1974, pp. 219-220, Munich, DE; J. KUHLWETTER "Einfacher, hochgenauer Spannungs-Frequenz-Umsetzer" *Whole article *.
Patent Abstracts of Abstracts, vol. 5, No. 11 (E-42)[683], Jan. 23, 1981 &JP-A-55 138 936 (Nippon Denki K.K.) 30-10-1980 * Abstract *.
Patent Abstracts of Japan, vol. 10, No. 5 (E-372)[2062], Jan. 10, 1986; & JP-A-60 170 359 (Meidensha K.K.) 03-09-1985.

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