Venugopal Te Kalluri

US Patent:

20090252315, Oct 8, 2009

Filed:

Apr 7, 2008

Appl. No.:

12/099144

Inventors:

Kiril Ratmanski - Santa Clara CA, US
Richard J. Kos - Haverhill MA, US
Erwin Goesnar - Daly City CA, US
Eric David Ellas - Somerville MA, US
Venugopal Kalluri - San Jose CA, US

Assignee:

Polycom, Inc. - Pleasanton CA

International Classification:

H04M 3/42

US Classification:

37920201

Abstract:

A communication system that includes multiple conferencing devices connected in a daisy-chain configuration is communicably connected to far-end conference participants. Multiple conferencing devices provide improved sound quality to the far-end participants by reducing aural artifacts resulting from reverberation and echo. The daisy-chain communication system also reduces the processing and transmission time of the near-end audio signal by processing and transmitting the audio signal in frequency domain. Each conferencing device in the daisy chain performs signal conditioning on its audio signal before transmitting it in the frequency domain to a mixer. The output signal of the mixer is converted back to the time domain before being transmitted to the far-end. The daisy-chain configuration also provides a distributed bridge to external communication devices that can be connected to each conferencing device.

US Patent:

20150264461, Sep 17, 2015

Filed:

Oct 3, 2013

Appl. No.:

14/430694

Inventors:

- San Francisco CA, US
David Clementson - Palo Alto CA, US
Venugopal Kalluri - San Ramon CA, US
Erwin Goesnar - Daly City CA, US
Gary Spittle - Hillsborough CA, US

Assignee:

DOLBY LABORATORIES LICENSING CORPORATION - San Francisco CA

International Classification:

H04R 1/08

Abstract:

A telecommunications device () comprises a base part (), a cap part (), a body part (), a control panel (), an upper light ring (), a lower light ring (), a plurality of sound microphones and a plurality of sound speakers. The cap part () is con cave in shape. The body part () is frusto-conical in shape and tapers outwardly away from the cap part () towards the base part (). The body part () and the cap part () cover the sound microphones and the sound speakers. The control panel () is inclined relative to the plane of the support surface () and relative to the plane of the base part (). The control panel () protrudes upwardly from the upper edge of the body part () over the concave cap part (), and the control panel () protrudes downwardly from the lower edge of the body part (). The control panel () controls operation of the sound microphones and the sound speakers. The upper light ring () is located between the cap part () and the body part (). The lower light ring () is located between the body part () and the base part (). When the device () is in an active state in which the device () is capable of capturing sound and/or rendering sound, each of the light rings () emits light to indicate the active state of the device ().