1
Helena S Ho, Michael K Pratt, Pong C Lim, Thomas T Oshidari: Voice enhancement system and method. DSC Communications Corporation, Baker & Botts, November 28, 1995: US05471527 (37 worldwide citation)

A telecommunications network (120) is provided with adaptive gain control (AGC) of the voice signals in network (120). Network (120) includes an input (12) for receiving a voice signal, an output (14) for receiving the voice signal, and a coupling between input (12) and output (14) including at leas ...


2
Kishan Shenoi, Patrick L Hanagan, Helena S Ho, Frank I Yu: Rudimentary digital speech interpolation apparatus and method. DSC Communications Corporation, Baker & Botts, November 12, 1991: US05065395 (37 worldwide citation)

Rudimentary digital speech interpolation apparatus for compressing data on a plurality of channels is disclosed, which includes circuitry for receiving data bits and control bits for each channel. The presence of silence on each channel is determined in response to the received data bits and zero bi ...


3
Kishan Shenoi, Patrick L Hanagan, Helena S Ho, Frank I Yu: N:1 bit compression apparatus and method. DSC Communications Corporation, Baker & Botts, January 18, 1994: US05280532 (22 worldwide citation)

An N:1 data compression system for compressing data on N DS1 trunks carrying 4N channels is disclosed. Waveform encoding circuitry is coupled to the N DS1 trunks for compressing the DS1 data into x bits and producing both encoded data and control parameters, where x.ltoreq.8. The system further incl ...


4
Helena S Ho, Michael K Pratt, Pong C Lim, Thomas T Oshidari: Voice enhancement system and method. DSC Communications Corporation, Baker & Botts L, January 7, 1997: US05592545 (18 worldwide citation)

A telecommunications network (120) is provided with adaptive gain control (AGC) of the voice signals in network (120). Network (120)includes an input (12) for receiving a voice signal, an output (14) for receiving the voice signal, and a coupling between input (12) and output (14) including at least ...


5
Kishan Shenoi, Patrick L Hanagan, Helena S Ho, Frank I Yu: DS1 trunk packing and unpacking apparatus and method. DSC Communications Corporation, September 29, 1992: US05151901 (7 worldwide citation)

Apparatus for packing and unpacking DS1 trunks comprises a packing circuitry for receiving compressed data from a plurality of DS1 trunks, packing the compressed data into the space of one DS1 trunk, and providing a serial output of data for the packed DS1 trunk. An unpacking circuitry is further pr ...


6
Kishan Shenoi, Helena S Ho: Apparatus and method for generating low level noise signals. DSC Communications Corporation, Baker & Botts, April 9, 1991: US05007086 (3 worldwide citation)

A method and apparatus for generating low level noise signals are provided. Two random numbers X.sub.1 and Y.sub.1 are first generated and bits 0-4 of the first random number X.sub.1 are extracted to produce a number X.sub.2. A number X.sub.3 is further computed by the formula: X.sub.3 =2.sup.-N (X. ...