Victor J Zeyliger

US Patent:

59698349, Oct 19, 1999

Filed:

Sep 3, 1997

Appl. No.:

8/922295

Inventors:

Gennady I. Farber - Palo Alto CA
Salim N. Jabr - Mountain View CA
Edward A. Vetter - Santa Clara CA
Victor A. Zeyliger - Milpitas CA

Assignee:

Ditech Corporation - Sunnyvale CA

International Classification:

H04B 1008

US Classification:

359110

Abstract:

One method of determining the signal to noise ratio of an optical signal models the noise floor based on amplified spontaneous emission (ASE) which is accumulated along the link. The ASE wavelength dependence is represented by a known mathematical function with a limited number of parameters. The parameters of this function are derived from measurements of the noise floor at a limited number of points by computational best fit means. A number of fiber grating filters at wavelengths between ITU allocated wavelengths are used to sample the optical noise and reflect the light back. An optical circulator is used to direct the reflected ASE light to an optical switch which allows the detector to select between transmitted and reflected light. The signal transmitted through the switch is monitored by a scanning filter with the appropriate resolution to resolve the signal or noise peaks. A first scan of the transmitted peaks is carried out and the signal is digitized and stored.

US Patent:

20160055858, Feb 25, 2016

Filed:

Aug 19, 2014

Appl. No.:

14/463294

Inventors:

- Burlington MA, US
Victor Zeyliger - Redwood City CA, US
Constantine V. Skidanenko - San Jose CA, US

International Classification:

G10L 19/12
G10L 19/08
H04W 76/04

Abstract:

The present disclosure is directed towards a system and method for reducing tandeming effects in a communications system. The method may include receiving, at a speech decoder, an input bitstream associated with an incoming initial speech signal from a speech encoder. The method may further include determining whether or not coding is required and if coding is required, modifying an excitation signal associated with the bitstream. The method may also include providing the modified excitation signal to an adaptive encoder.

US Patent:

20150295946, Oct 15, 2015

Filed:

Apr 15, 2014

Appl. No.:

14/253384

Inventors:

- Burlington MA, US
Victor Zeyliger - Redwood City CA, US

Assignee:

Nuance Communications, Inc. - Burlington MA

International Classification:

H04L 29/06

Abstract:

The present disclosure is directed towards a system and method for handling rogue data packets. The method may include receiving, using one or more processors, a first data packet having header information associated therewith. The method may further include obtaining, from the header information, sequence number, timestamp and synchronization source identifier information. The method may also include detecting one or more rogue data packets, based upon, at least in part, at least one of the sequence number, timestamp and synchronization source identifier information.