Optical transmitting apparatus, optical receiving apparatus, and

Details Optical transmitting apparatus, optical receiving apparatus, and Optical transmitting apparatus, optical receiving apparatus, and

1997-10-07

2000-12-26

Pascal, Leslie

Optical: systems and elements

Deflection using a moving element

Using a periodically moving element

359155, 359158, 359154, H04B 1000, H04B 1012, H04B 1500

Patent

active

061668397

ABSTRACT:
An optical transmitting apparatus has an identification level output circuit which outputs identification level information which is required when a logical level of transmission data is determined by a received signal, which has been converted from an optical signal to an electrical signal by an opposing optical receiving apparatus. The optical transmitting apparatus also has a light emitter for the identification level information which performs an electrical-to-optical conversion of the identification level information from the identification level output circuit and irradiates the identification level information toward a light transmitting path for exclusive use with the identification level information. Also, there is an optical receiving apparatus which has a light sensor for the identification level information which performs an optical-to-electrical conversion of an optical signal arrived via a light transmitting path for exclusive use with identification level information for logical level identification of the data the data having been transmitted in the same way by the optical transmitting apparatus. The optical receiving apparatus also has an identification level supplying circuit which outputs an identification level determined by an electric signal from the light sensor for the identification level information.

REFERENCES:
patent: 4267590 (1981-05-01), Bosotti
patent: 4742575 (1988-05-01), Arita
patent: 5444561 (1995-08-01), Kaminishi
patent: 5589683 (1996-12-01), Nakai
patent: 5652767 (1997-07-01), Kiyonaga et al.
patent: 5923455 (1999-07-01), Rokugawa
A. Takai et al., "(The Current Condition of) Optical Interconnects", Shingakugiho, LOE96-150, Feb. 1997, pp. 43-48.

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