Motorola Corporation

Callpod, Inc.

Daniel Morris Lurey

Yuda Yehuda Luz

Alan P Rottinghaus

Kevin M Laird

Danny T Pinckley

Paul Fielding Smith

John M Smith

Robert C Elder

Shelia Marie Rader

Donald E Bailey

Tony Kobrinetz

Sheila M Rader

Kevin Michael Laird

Danny Thomas Pinckley

Darren S Guccione

Anthony Kobrinetz

Alan Patrick Rottinghaus

Sheila Marie Rader

A method and apparatus are provided for establishing a conference call connection among a plurality of conference call participants. The method includes the steps of providing a call pod for interconnecting a plurality of headsets of the plurality of participants, operably connecting a headset interface of a wireless telephone with a wireless telephone audio interface of the call pod and forming a two-way voice path among the plurality of headsets and the wireless telephone interface within the call pod.

Call pod for having conference calls in a portable environment

A multi-channel digital transceiver (400) receives uplink radio frequency signals and converts these signals to digital intermediate frequency signals. Digital signal processing, including a digital converter module (426), is employed to select digital intermediate frequency signals received at a plurality of antennas (412) and to convert these signals to baseband signals. The baseband signals are processed to recover a communication channel therefrom. Downlink baseband signals are also processed and digital signal processing within the digital converter module (426) up converters and modulates the downlink baseband signals to digital intermediate frequency signals. The digital intermediate frequency signals are converted to analog radio frequency signals, amplified and radiated from transmit antennas (420).

Multi-channel digital transceiver and method

Multiple access digital transmitter and receiver

A multiple access digital up converter/modulator includes selectors (1606, 1608) having inputs (1602, 1604) and outputs coupled to first and second interpolating filters (1610, 1626). The output of the first interpolating filter is selectively coupled to a first mixer (1612) and a first adder (1622), the first adder also receiving a first phase value and the output is coupled to a first phase accumulator (1616) the output of which is coupled to a first sinusoid generator (1614) and selectively coupled to a second sinusoid generator (1630). The output of each of the first and second mixers are selectively coupled to an output adder (1634) and to inputs of the first and second mixers. The output of the second interpolating filter (1626) is selectively coupled to a second mixer (1628) and a second adder (1638), which also receives a second phase value and the output of which is coupled to a second phase accumulator (1640) the output of which is selectively coupled to the second sinusoid generator. The output of each of the first and second mixers are selectively coupled to an output adder (1634).

Multiple access up converter/modulator and method

Generally stated, an apparatus and method for routing a digitized radio frequency (RF) signal 140-143 to a plurality of paths is described herein. In accordance with a first preferred embodiment, the apparatus comprises a digital upconverter/modulator (DUC) 125, 129 coupled to a scaling and switching network 100N which is comprised of, at minimum, a first, second, third and fourth digital switch, and a first, second and third adder. Within the scaling and switching network 100N, the first digital switch is responsive to the DUC 125,129. The first adder is responsive to the first and second digital switches, while the second adder is responsive to the third and fourth digital switches. Finally, the third adder is responsive to the first and second adders.

Method and apparatus for routing a digitized RF signal to a plurality of

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Hoffman Estates, IL, United States of America

Daniel Morris Lurey