Inventor

Daniel C. Upp

Inventor

Southbury, CT, US

Overview

35→

Patents

1980–2008

Patent span

Electricity

Primary field (CPC H)

Patents· 35 as inventor

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

H04Jprimary

H04JMultiplex communication22%

H04LTransmission of digital information, e.g. telegraphic communication18%

H04QSelecting18%

G06FElectric digital data processing10%

H03KPulse technique7%

H03MCoding6%

H04BTransmission4%

H01QAntennas, i.e. radio aerials3%

H10DInorganic electric semiconductor devices3%

G08CTransmission systems for measured values, control or similar signals1%

PatentTitleYear

7,409,120'Integrated circuit for programmable optical delay'2008 7,349,444'SONET/SDH SPE/virtual container retiming with adaptive dual pointer leak rate computation'2008 7,333,733'Optoelectronic clock generator producing high frequency optoelectronic pulse trains with variable frequency and variable duty cycle and low jitter'2008 7,064,697'Photonic sigma delta analog-to-digital conversation employing dual heterojunction thyristors'2006 6,954,473'Optoelectronic device employing at least one semiconductor heterojunction thyristor for producing variable electrical/optical delay'2005 6,646,983'Network switch which supports TDM, ATM, and variable length packet traffic and includes automatic fault/congestion correction'2003 6,636,511'Method of multicasting data through a communications switch'2003 6,636,515'Method for switching ATM, TDM, and packet data through a single communications switch'2003 6,631,130'Method and apparatus for switching ATM, TDM, and packet data through a single communications switch while maintaining TDM timing'2003 6,577,651'Methods and apparatus for retiming and realigning sonet signals'2003 6,463,111'Method and apparatus for desynchronizing a DS-3 signal and/or an E3 signal from the data portion of an STS-STM payload'2002 6,243,359'Methods and apparatus for managing traffic in an atm network'2001 6,104,724'Asynchronous data transfer and source traffic control system'2000 5,901,146'Asynchronous data transfer and source traffic control system'1999 5,608,731'Closed loop clock recovery for synchronous residual time stamp'1997 5,568,060'Circuit board insertion circuitry for high reliability backplanes'1996 5,548,534'Two stage clock dejitter circuit for regenerating an E4 telecommunications signal from the data component of an STS-3C signal'1996 5,297,180'Digital clock dejitter circuits for regenerating clock signals with minimal jitter'1994 5,289,507'Clock dejitter circuits for regenerating jittered clock signals'1994 5,191,582'Method and apparatus for the high speed modification of a packet address field of a transmitted packet in a frame relay system'1993 5,157,655'Apparatus for generating a DS-3 signal from the data component of an STS-1 payload signal'1992 5,142,529'Method and means for transferring a data payload from a first SONET signal to a SONET signal of different frequency'1992 5,119,326'Waveshaping transversal filter and method utilizing the same for data transmission over coaxial cable'1992 5,040,170'System for cross-connecting high speed digital signals'1991 5,033,064'Clock dejitter circuit for regenerating DS1 signal'1991 4,998,242'Virtual tributary cross connect switch and switch network utilizing the same'1991 4,967,405'System for cross-connecting high speed digital SONET signals'1990 4,914,429'Switch components and multiple data rate non-blocking switch network utilizing the same'1990 4,641,301'Telecommunication switching system and priority arrangement used therein'1987 4,608,684'Digital switching systems employing multi-channel frame association apparatus'1986 4,598,396'Duplex transmission mechanism for digital telephones'1986 4,456,991'Telephone line circuit and system'1984 4,439,826'Diagnostic system for a distributed control switching network'1984 4,293,946'Trilateral duplex path conferencing system with broadcast capability'1981 4,201,890'Multiport digital switching element'1980

Career & activity timeline

Assembled from patent assignee/location history and declaration credentials.

1980–1986Patents assigned to ITT (6)· patent assignee history

1980–1984Based in Easton, CT, US· patent location history

1984–2008Based in Southbury, CT, US· patent location history

1987Patents assigned to INT STANDARD ELECTRIC CORP (1)· patent assignee history

1990–2008Patents assigned to TRANSWITCH CORP (23)· patent assignee history

2005–2008Patents assigned to UNIV CONNECTICUT (4)· patent assignee history

2008Patents assigned to OPEL INC (2)· patent assignee history

Inventor activity

Assignee and location history derived from the patent record.

Assignees

Assignee	Patents	Span
TRANSWITCH CORP	23	1990–2008
ITT	6	1980–1986
UNIV CONNECTICUT	4	2005–2008
OPEL INC	2	2008
INT STANDARD ELECTRIC CORP	1	1987

Locations

Location	Patents	Span
Southbury, CT, US	32	1984–2008
Easton, CT, US	3	1980–1984