US Patent No: 5,636,209

Number of patents in Portfolio can not be more than 2000

Modem to support multiple site call conferenced data communications

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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.

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First Claim

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MPATH INTERACTIVE, INC.MOUNTAIN VIEW, CA5

International Classification(s)

  • [Classification Symbol]
  • [Patents Count]

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Perlman, Stephen G Palo Alto, CA 234 4030

Cited Art

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Patent Citation Ranking

Forward Cites

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QUALCOMM INCORPORATED (4)
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ZING NETWORKS (1)
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ZYNGA INC. (1)
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