Pulse or digital communications – Repeaters – Testing
Patent
1982-04-14
1984-04-10
Griffin, Robert L.
Pulse or digital communications
Repeaters
Testing
340347DD, 455608, H03K 1324
Patent
active
044425287
ABSTRACT:
This invention provides a pulse communication method and system capable of converting a data pulse signal into a CMI code and then converting it further into a 3-level CMI signal having a positive and a negative pulse including a data signal and a clock signal for transmission so that the data signal and the clock signal are separately extracted on the reception side. The pulse communication method and system according to this invention is characterized in that the system has large speed and capacity of signal transmission, the apparatus can be constructed compact, and the condition of the transmission line can be monitored easily utilizing the fact that the average value of the 3-level CMI signals is a half of the peak value of the 3-level CMI signals. This invention is highly effective applied in the field of light pulse communication using optical fiber.
REFERENCES:
patent: 3953673 (1976-04-01), Dorward
patent: 4071692 (1978-01-01), Weir et al.
patent: 4189621 (1980-02-01), Scott
Takasaki et al., "Line Coding Plans for Fiber Optic Comm 51st", Conference Record vol. II ICC, June 1975, pp. 32-20-32-34.
Japanese Patent Application No. 99944/1974.
Chin Stephen
Griffin Robert L.
Sumitomo Electric Industries Ltd.
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