Inventor
Jack Ehrhardt
Inventor
Richmond, VA, US
Overview
Patents· 4 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television33%
G11BInformation storage based on relative movement between record carrier and transducer25%
G06FElectric digital data processing17%
H04LTransmission of digital information, e.g. telegraphic communication17%
G06TImage data processing or generation, in general8%
PatentTitleYear
7,698,570'Digital content distribution system and method'20107,162,642'Digital content distribution system and method'20076,285,774'System and methodology for tracing to a source of unauthorized copying of prerecorded proprietary material, such as movies'20016,078,328'Compressed video graphics system and methodology'2000Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
2000–2010Patents assigned to DIGITAL VIDEO EXPRESS LP (4)· patent assignee history
2000–2010Based in Richmond, VA, US· patent location history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| DIGITAL VIDEO EXPRESS LP | 4 | 2000–2010 |
Locations
| Location | Patents | Span |
|---|---|---|
| Richmond, Virginia, US | 4 | 2000–2010 |