Data discriminating circuit and an optical receiver using the sa

Details Data discriminating circuit and an optical receiver using the sa Data discriminating circuit and an optical receiver using the sa

1993-10-14

1995-12-05

Coles, Sr., Edward L.

Pulse or digital communications

Receivers

Angle modulation

375340, 359175, 359189, H04L 2714

Patent

active

054736366

ABSTRACT:
A data discriminating circuit which discriminates a signal, particularly, a data discriminating circuit which can perform data discrimination with the proper phase relation settled between data and a clock with a simple circuit structure. The data discriminating circuit comprises a clock distributor for generating first and second clock signals having different phases, first and second data discriminating/judging sections for respectively receiving the first and second clock signals and commonly receiving data, and a discriminated-data selecting section, which receives first discriminated data discriminated with the first clock signal, a discrimination/judgment result based on the phase relation between the first discriminated data and the first clock signal, second discriminated data discriminated with the second clock signal, and a discrimination/judgment result based on the phase relation between the second discriminated data and the second clock signal, and selectively outputs the first or second discriminated data based on both discrimination/judgment results.

REFERENCES:
patent: 4514854 (1985-04-01), Ashida
patent: 4841519 (1989-06-01), Nishio
patent: 4857727 (1989-08-01), Lenz et al.
patent: 5340980 (1994-08-01), Bianchini et al.

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