Multiplex communications – Duplex – Communication over free space
Patent
1994-05-05
1997-06-03
Olms, Douglas W.
Multiplex communications
Duplex
Communication over free space
463 42, 375222, 370480, H04J 108
Patent
active
056362099
ABSTRACT:
An apparatus for establishing a data communication link with a plurality of other modems on telephone line is disclosed. The Frequency-Division Multiplexing (FDM) compliant modem of the present invention for establishing a data communication link with a plurality of other FDM compliant modems on a telephone line comprises a means for transmitting data on a first modulation band on the telephone line and a means for receiving data on a plurality of distinct modulation bands on the telephone line. The present invention also includes a system for linking a plurality of FDM compliant modems in a multiple site configuration on a telephone line, the system comprising a plurality of FDM compliant modems, each modem of the plurality of modems transmitting data on a distinct modulation band and receiving data on at least two other modulation bands.
REFERENCES:
patent: 4101833 (1978-07-01), Bingham et al.
patent: 4288868 (1981-09-01), Grotjohann et al.
patent: 4520477 (1985-05-01), Wen
patent: 4572509 (1986-02-01), Sitrick
patent: 4592546 (1986-06-01), Fascenda et al.
patent: 4646293 (1987-02-01), Okada et al.
patent: 4799635 (1989-01-01), Nakagawa
patent: 4980897 (1990-12-01), Decker et al.
patent: 4998199 (1991-03-01), Tashiro et al.
patent: 5013038 (1991-05-01), Luxenberg et al.
patent: 5048831 (1991-09-01), Sides
patent: 5070479 (1991-12-01), Nakagawa
patent: 5083800 (1992-01-01), Lockton
patent: 5112051 (1992-05-01), Darling et al.
patent: 5120076 (1992-06-01), Luxenberg et al.
patent: 5155768 (1992-10-01), Matsuhara
patent: 5161803 (1992-11-01), Ohara
patent: 5210530 (1993-05-01), Kammerer et al.
patent: 5291189 (1994-03-01), Otake et al.
patent: 5350176 (1994-09-01), Hochstein et al.
patent: 5388122 (1995-02-01), Kawada
Nguyen Chau T.
Olms Douglas W.
LandOfFree
Modem to support multiple site call conferenced data communicati does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Modem to support multiple site call conferenced data communicati, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Modem to support multiple site call conferenced data communicati will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-397175