Optical communications – Transmitter and receiver system – Passive system
Reexamination Certificate
2006-05-30
2006-05-30
Phan, Hanh (Department: 2638)
Optical communications
Transmitter and receiver system
Passive system
C398S170000, C398S140000, C398S168000, C398S182000, C398S183000, C398S202000, C398S079000, C398S091000, C455S166200, C455S166200, C455S166200
Reexamination Certificate
active
07054563
ABSTRACT:
A multi-channel optical communication system includes an optical transmitting apparatus and an optical receiving apparatus. The optical transmitting apparatus has a retroreflector and a modulator for modulating light reflected by the retroreflector according to a transmission signal. The light receiving apparatus has a light source and a demodulating circuit for demodulating the transmission signal modulated by the modulator from the light emitted from the light source and reflected from the retroreflector. The modulator includes a plurality of optical reflection devices arranged on a reflection plane of the retroreflector and capable of controlling optical reflection independently of each other and a circuit for separately controlling each of the optical reflection devices. The demodulating circuit includes a CCD having a plurality of photoreceptors arranged correspondingly to the arrangement of the optical reflection devices.
REFERENCES:
patent: 4887310 (1989-12-01), Meyzonnette et al.
patent: 5117301 (1992-05-01), Tsumura
patent: 5278687 (1994-01-01), Jannson et al.
patent: 5355241 (1994-10-01), Kelley
patent: 5371623 (1994-12-01), Eastmond et al.
patent: 5819164 (1998-10-01), Sun et al.
patent: 6154299 (2000-11-01), Gilbreath et al.
patent: 6449406 (2002-09-01), Fan et al.
patent: 6501877 (2002-12-01), Weverka et al.
patent: 6624916 (2003-09-01), Green et al.
“On Performance Improvement of Light Intensity Modulation Using Attenuated Total Reflection on Corner Cube,” by T. Tsumura et al., Technical Report of IEICE, Sane94-91, Sat94-91, pp. 111-114.
“Most Likely Candidate for Next-Generation Display: Is it Superior to Liquid Crystal?” Nikkei Business, Nov. 15, 1999, pp. 60-64.
McDermott Will & Emery LLP
Phan Hanh
Tsumura Research Institute Co.
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