Inventor

Kishan Shenoi

Inventor

Saratoga, CA, US

Overview

1981–2019

Patent span

Electricity

Primary field (CPC H)

Patents· 54 as inventor

Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.

H04Jprimary

H04JMultiplex communication24%

H04LTransmission of digital information, e.g. telegraphic communication20%

H04BTransmission17%

H04QSelecting7%

H03LAutomatic control, starting, synchronisation or stabilisation of generators of electronic oscillations or pulses5%

H03MCoding4%

H04MTelephonic communication4%

H04WWireless communication networks4%

G06FElectric digital data processing3%

H03JTuning resonant circuits3%

PatentTitleYear

10,187,861Constructing a distributed boundary clock over a dedicated communication channel2019 10,142,044Managed timing engine2018 9,912,428'Systems and methods utilizing randomized clock rates to reduce systematic time-stamp granularity errors in network packet communications'2018 9,860,003'Method for providing time holdover in packet-based timing deployments'2018 9,854,548Method for constructing a distributed boundary clock over a dedicated communication channel2017 9,780,896'System and method for direct passive monitoring of packet delay variation and time error in network packet communications'2017 9,529,748'Backplane timing distribution'2016 9,319,054'Systems and methods utilizing randomized clock rates to reduce systematic time-stamp granularity errors in network packet communications'2016 9,130,687'System and method for direct passive monitoring of packet delay variation and time error in network packet communications'2015 8,427,963'Method and system for analyzing and qualifying routes in packet networks'2013 8,385,212'Method and apparatus for finding latency floor in packet networks'2013 8,379,151'Synchronization of audio and video streams'2013 8,274,999'Method and apparatus for analyzing and qualifying packet networks'2012 7,894,489'Adaptive play-out buffers and adaptive clock operation in packet networks'2011 7,636,022'Adaptive play-out buffers and clock operation in packet networks'2009 7,535,900'Multiple transmission bandwidth streams with defferentiated quality of service'2009 7,382,845'Distribution of synchronization in an ethernet local area network environment'2008 7,366,286'Modified asymmetric digital subscriber line for use with long loops'2008 7,349,401'Bonded G.shdsl links for ATM backhaul applications'2008 7,310,310'Multi-link SAR for bonding ATM cell-streams'2007 7,161,953'Bonding multiple G.shdsl links'2007 7,158,523'Multi-link segmentation and reassembly sublayer for bonding asynchronous transfer mode permanent virtual circuits'2007 7,142,619'Long subscriber loops using automatic gain control mid-span extender unit'2006 7,130,332'Pilot tracking for synchronization using correlation between digital signal and locally generated version of PN signal'2006 7,039,103'Asymmetric digital subscriber line methods suitable for long subscriber loops'2006 6,842,426'Fault detection for subscriber loop repeaters'2005 6,842,498'Global positioning system interference detection'2005 6,829,292'Increasing gain with isolating upstream and downstream filters and amplifiers'2004 6,724,835'Carrier tracking method'2004 6,707,329'Clock recovery or detection of rapid phase transients'2004 6,549,604'Clock recovery and detection of rapid phase transients'2003 6,512,803'Global positioning system receiver capable of functioning in the presence of interference'2003 6,507,606'Asymmetric digital subscriber line methods suitable for long subscriber loops'2003 6,490,296'Multi-link segmentation and reassembly for bonding multiple PVC\'s in an inverse multiplexing arrangement'2002 6,125,125'Synchronization of TDMA cell sites'2000 5,828,670'Distribution of synchronization in a synchronous optical environment'1998 5,768,355'Three-way call detection system'1998 5,764,704'DSP implementation of a cellular base station receiver'1998 5,638,379'Encoding system for distribution of synchronization'1997 5,327,495'Apparatus and method for controlling an echo canceler'1994 5,280,532'N:1 bit compression apparatus and method'1994 5,159,279'Apparatus and method for detecting out-of-lock condition in a phase lock loop'1992 5,151,901'DS1 trunk packing and unpacking apparatus and method'1992 5,148,426'Integrated echo canceling multiplexor'1992 5,065,395'Rudimentary digital speech interpolation apparatus and method'1991 5,029,204'Operational status controller for echo canceling'1991 5,007,086'Apparatus and method for generating low level noise signals'1991 4,476,435'Digital demodulation of frequency modulated signals'1984 4,439,756'Delta-Sigma modulator with switch capacitor implementation'1984 4,302,631'Decimator apparatus for decreasing the word rate of a digital signal of the type employed in digital telephone systems'1981 4,272,648'Gain control apparatus for digital telephone line circuits'1981 4,270,027'Telephone subscriber line unit with sigma-delta digital to analog converter'1981 4,270,026'Interpolator apparatus for increasing the word rate of a digital signal of the type employed in digital telephone systems'1981 4,268,727'Adaptive digital echo cancellation circuit'1981

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1981–1984Patents assigned to ITT (7)· patent assignee history

1981–1984Based in Fairfield, CT, US· patent location history

1991–1994Patents assigned to DSC COMMUNICATIONS (8)· patent assignee history

1991–1994Based in Milpitas, CA, US· patent location history

1997–2013Patents assigned to SYMMETRICOM INC (27)· patent assignee history

1997–2019Based in Saratoga, CA, US· patent location history

2012–2016Patents assigned to SHENOI KISHAN (5)· patent assignee history

2016–2019Patents assigned to QULSAR INC (5)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
SYMMETRICOM INC	27	1997–2013
DSC COMMUNICATIONS	8	1991–1994
ITT	7	1981–1984
QULSAR INC	5	2016–2019
SHENOI KISHANself	5	2012–2016

Locations

Location	Patents	Span
Saratoga, California, US	39	1997–2019
Milpitas, California, US	8	1991–1994
Fairfield, CT, US	7	1981–1984