Inventor
Thomas R. Armstrong
Inventor
Largo, FL, US
Overview
Patents· 11 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Lprimary
H04LTransmission of digital information, e.g. telegraphic communication77%
H04JMultiplex communication15%
H04BTransmission8%
PatentTitleYear
4,797,878'Multiple virtual multipoint modem using TDM/token throwing technique'19894,645,871'Non-interfering in-band protocol-independent diagnostic scanning in a digital multipoint communication system'19874,630,287'Secondary channel signalling in a QAM data point constellation'19864,627,077'Modified QAM data point constellation for secondary channel signalling'19864,558,317'Digital communication link monitoring device'19854,516,216'In-service monitoring system for data communications network'19854,381,546'System for the quantitative measurement of impairments in the communication channel of a quadrature amplitude modulation data communication system'19834,374,436'System for the monitoring and restoration of series terminals in a looped communication system'19834,335,464'Dual multipoint data transmission system modem'19824,273,955'System for in-service quantitative performance analysis of data communications system'19814,271,527'Double side band-quadrature carrier modulation signal structures'1981Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1981–1989Patents assigned to PARADYNE CORP (11)· patent assignee history
1981–1985Based in Largo, FL, US· patent location history
1985–1989Based in Clearwater, FL, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| PARADYNE CORP | 11 | 1981–1989 |
Locations
| Location | Patents | Span |
|---|---|---|
| Largo, Florida, US | 6 | 1981–1985 |
| Clearwater, Florida, US | 5 | 1985–1989 |