1
Hermon Pon, Rafi Rabipour, Chung Cheung Chu: System for TDMA mobile-to-mobile VSELP codec bypass. Northern Telecom, Foley & Lardner, June 16, 1998: US05768308 (37 worldwide citation)

In a TDMA mobile-to-mobile connection, the end-to-end audio signal quality as well as system performance can be improved by providing digital signal processors the capability to automatically switch configuration such that each digital signal processor in a mobile-to-mobile communication connection ...


2
Hermon Pon, Rafi Rabipour, Chung Cheung Chu: System for TDMA mobile-to-mobile VSELP CODEC bypass. Nortel Networks, Dennis R Haszko, February 6, 2001: US06185424 (23 worldwide citation)

In a TDMA mobile-to-mobile connection, the end-to-end audio signal quality as well as system performance can be improved by providing digital signal processors the capability to automatically switch configuration such that each digital signal processor in a mobile-to-mobile communication connection ...


3
Chung Cheung Chu, Rafi Rabipour: Methods and apparatus for distinguishing stationary signals from non-stationary signals. Northern Telecom, C W Junkin, June 30, 1998: US05774847 (16 worldwide citation)

In methods and apparatus for distinguishing stationary signals from non-stationary signals, a set of Linear Predictive Coding (LPC) coefficients characterizing spectral properties of the signal for each of a plurality of successive time intervals, including a current time interval, is determined. Th ...


4
H S P Yue, Rafi Rabipour, Chung Cheung Chu: Methods and devices for noise conditioning signals representative of audio information in compressed and digitized form. Nortel Networks Corporation, February 15, 2000: US06026356 (11 worldwide citation)

The present invention relates to methods and devices for processing data frames representative of audio information in digitized and compressed form. The method comprises the steps of classifying successive data frames into frames containing speech sounds and non-speech sounds, altering parameters o ...


5
Chung Cheung Chu, Rafi Rabipour: Providing a capability list of a predefined format in a communications network. Genband US, Jenkins Wilson Taylor & Hunt P A, September 27, 2011: US08027265 (4 worldwide citation)

In a communications network having plural nodes, a first node receives a capability list that has a predefined format and includes plural entries identifying corresponding data processing functions supported by one or more nodes along a communications path of a communications session involving the f ...


6
Rafi Rabipour, Chung Cheung Chu, Daniel Cohn: Mechanism for dynamic signaling of encoder capabilities. Telefonaktiebolaget L M Ericsson, Withrow & Terranova PLLC, March 1, 2016: US09277057 (3 worldwide citation)

The present disclosure provides systems and methods for dynamically signaling encoder capabilities of vocoders of corresponding communication nodes. In one embodiment, during a call between a first communication node and a second communication node, a control node (e.g., base station controller or m ...


7
Rafi Rabipour, Chung Cheung Chu: Data communication apparatus and method. Genband US, Jenkins Wilson Taylor & Hunt P A, August 28, 2012: US08254372 (2 worldwide citation)

Communication apparatus having interfaces for exchanging data with first and second neighbors, a memory for storing codec information regarding the communication apparatus and a control entity operative to detect a message from the first neighbor, the first message being indicative of codec informat ...


8
Rafi Rabipour, Chung Cheung Chu, Paul Coverdale: Method and apparatus for controlling an operative setting of a communications link. Nortel Networks, July 11, 2006: US07076316 (2 worldwide citation)

A method and apparatus for controlling an operative setting of a communications link is provided. The communications link is capable of acquiring a plurality of operative settings. Audio quality in the communications link under different operative settings is compared and an operative setting is sel ...


9
Chung Cheung Chu, Rafi Rabipour, Peter Yue: Communicating processing capabilities along a communications path. Genband US, Jenkins Wilson Taylor & Hunt P A, August 2, 2011: US07990865 (1 worldwide citation)

The present invention provides a technique for determining which nodes are to provide various functions on traffic along a particular communication path. Generally, a communication path may include multiple nodes between which and through which traffic is routed. These nodes may include the communic ...


10
Chung Cheung Chu, Djordje Konforti, Rafi Rabipour, Christy Yep: Providing a schedule for active events to be processed by a processor. Genband US, Jenkins Wilson Taylor & Hunt P A, April 3, 2012: US08149698 (1 worldwide citation)

A switch that interconnects networks provides a scheduling algorithm that determines a number of active events to be processed by a processor in the switch. The active events involve processing of bearer traffic. A schedule tailored to the number of active events is generated. In response to a chang ...