`
`Table of challenged claims of U.S. Patent No. 6,049,607
`
`Claims of the 607
`
`1. An interference canceling apparatus
`
`for canceling, from a target signal
`
`generated from a target source, an
`
`interference signal generated by an
`
`interference source, said apparatus
`
`comprising:
`
`1a) a main input for inputting said
`
`target signal;
`
`1b) a reference input for inputting said
`
`interference signal;
`
`1c) a beam splitter for beam-splitting
`
`said target signal into a plurality of
`
`band-limited target signals and beam-
`
`splitting said interference signal into
`
`band-limited interference signals,
`
`wherein the amount and frequency of
`
`WAVES607_1003-0001
`
`Petitioner Waves Audio Ltd. 607 - Ex. 1003
`
`
`
`band-limited target signals equal the
`
`amount and frequency of band-limited
`
`interference signals, whereby for each
`
`band-limited target signal there is a
`
`corresponding band-limited
`
`interference signal;
`
`1d) an adaptive filter for adaptively
`
`filtering, each band-limited
`
`interference signal from each
`
`corresponding band-limited target
`
`signal.
`
`2. The apparatus according to claim 1,
`
`wherein said target signal represents
`
`speech generated at a near end of a
`
`teleconference, said reference signal
`
`represents said target signal broadcast
`
`from a far end of said teleconference
`
`and said interference signal represents
`
`an echo generated by said broadcast of
`
`said reference signal of said far end.
`
`WAVES607_1003-0002
`
`Petitioner Waves Audio Ltd. 607 - Ex. 1003
`
`
`
`3. The apparatus according to claim 2,
`
`wherein said adaptive filter is an
`
`adaptive filter array with each adaptive
`
`filter in said array filtering a different
`
`frequency band.
`
`4. The apparatus according to claim 2,
`
`wherein said adaptive filter estimates a
`
`transfer function of said reference
`
`signal broadcast of said far end.
`
`8. The apparatus according to claim 2,
`
`further comprising a beam selector for
`
`selecting at least one of a plurality of
`
`beams for adaptive filtering by said
`
`adaptive filter representing a direction
`
`from which said main signal is
`
`received.
`
`25. An interference canceling method
`
`for canceling, from a target signal
`
`generated from a target source, an
`
`interference signal generated by an
`
`WAVES607_1003-0003
`
`Petitioner Waves Audio Ltd. 607 - Ex. 1003
`
`
`
`interference source, said method
`
`comprising the steps of:
`
`25a) inputting said target signal;
`
`25b) inputting said interference signal;
`
`25c) beam-splitting said target signal
`
`into a plurality of band-limited target
`
`signals and beam-splitting said
`
`interference signal into band-limited
`
`interference signals, wherein the
`
`amount and frequency of band-limited
`
`target signals equal the amount and
`
`frequency of band-limited interference
`
`signals, whereby for each band-limited
`
`target signal there is a corresponding
`
`band-limited interference signal; and
`
`25d) adaptively filtering, each band-
`
`limited interference signal from each
`
`corresponding band-limited target
`
`signal.
`
`WAVES607_1003-0004
`
`Petitioner Waves Audio Ltd. 607 - Ex. 1003
`
`
`
`26. The method according to claim 25,
`
`wherein said target signal represents
`
`speech generated at a near end of a
`
`teleconference, said reference signal
`
`represents said target signal broadcast
`
`from a far end of said teleconference
`
`and said interference signal represents
`
`an echo generated by said broadcast of
`
`said reference signal of said far end.
`
`27. The method according to claim 26,
`
`wherein said step of adaptive filtering
`
`filters said band-limited target signals
`
`separately according to the frequency
`
`band.
`
`28. The method according to claim 26,
`
`wherein said step of adaptive filtering
`
`estimates a transfer function of said
`
`reference signal broadcast of said far
`
`end.
`
`WAVES607_1003-0005
`
`Petitioner Waves Audio Ltd. 607 - Ex. 1003
`
`
`
`32. The method according to claim 26,
`
`further comprising the step of beam
`
`selecting at least one of a plurality of
`
`beams for adaptive filtering in said step
`
`of adaptive filtering representing a
`
`direction from which said main signal
`
`is received.
`
`
`
`WAVES607_1003-0006
`
`Petitioner Waves Audio Ltd. 607 - Ex. 1003
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