Inventor
John Abt
Inventor
Nevada City, CA, US
Overview
Patents· 17 as inventor
Public. Assignee & technology derived from the patent record. Each patent links to its LexDana page.
H04Nprimary
H04NPictorial communication, e.g. television53%
G06FElectric digital data processing13%
G09GArrangements or circuits for control of indicating devices using static means to present variable information13%
H04LTransmission of digital information, e.g. telegraphic communication10%
G01RMeasuring electric variables3%
G06TImage data processing or generation, in general3%
G11BInformation storage based on relative movement between record carrier and transducer3%
PatentTitleYear
8,838,825'Synchronized transmission of audio and video data from a computer to a client via an interface'20147,970,926'Synchronized transmission of audio and video data from a computer to a client via an interface'20117,668,099'Synthesis of vertical blanking signal'20107,353,284'Synchronized transmission of audio and video data from a computer to a client via an interface'20085,850,267'Non-additive video mixer'19985,638,133'Method of creating video effects by use of keyframes'19975,235,423'Controllable pseudo random noise pattern generator for use in video special effects'19934,965,668'Adaptive rounder for video signals'19904,963,977'Apparatus for generating a video signal representing a field of spatially varying color'19904,947,254'Layered mix effects switcher architecture'19904,873,568'Digital video effects apparatus'19894,858,011'Video switcher system with modular architecture'19894,853,784'Video switcher with independent processing of selected video signals'19894,823,183'Video mixer with multicolor boarder'19894,821,269'Diagnostic system for a digital signal processor'19894,805,022'Digital wipe generator'19894,700,232'Interpolator for television special effects system'1987Career & activity timeline
Assembled from patent assignee/location history and declaration credentials.
1987–1993Patents assigned to GRASS VALLEY GROUP (10)· patent assignee history
1987–1998Based in Nevada City, CA, US· patent location history
1989Patents assigned to ABT JOHN (1)· patent assignee history
1997–1998Patents assigned to TEKTRONIX INC (2)· patent assignee history
2008–2014Patents assigned to APPLE INC (4)· patent assignee history
2008–2014Based in Grass Valley, CA, US· patent location history
2014Patents assigned to ABT JOHN O (1)· patent assignee history
Inventor activity
Assignee and location history derived from the patent record.
Assignees
| Assignee | Patents | Span |
|---|---|---|
| GRASS VALLEY GROUP | 10 | 1987–1993 |
| APPLE INC | 4 | 2008–2014 |
| TEKTRONIX INC | 2 | 1997–1998 |
| ABT JOHNself | 1 | 1989 |
| ABT JOHN Oself | 1 | 2014 |
Locations
| Location | Patents | Span |
|---|---|---|
| Nevada City, California, US | 13 | 1987–1998 |
| Grass Valley, California, US | 4 | 2008–2014 |