Inventor
ABT JOHN
US13 patents
⚠️ This page may combine multiple inventors who share the name “ABT JOHN”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
GRASS VALLEY GROUP
10 patentsUS4965668AOct 23, 1990
Adaptive rounder for video signals
GRASS VALLEY GROUP54 citations94
US4821269AApr 11, 1989
Diagnostic system for a digital signal processor
GRASS VALLEY GROUP44 citations91
US4853784AAug 1, 1989
Video switcher with independent processing of selected video signals
GRASS VALLEY GROUP53 citations90
US4823183AApr 18, 1989
Video mixer with multicolor boarder
GRASS VALLEY GROUP21 citations81
US4805022AFeb 14, 1989
Digital wipe generator
GRASS VALLEY GROUP21 citations81
US4963977AOct 16, 1990
Apparatus for generating a video signal representing a field of spatially varying color
GRASS VALLEY GROUP12 citations73
US4873568AOct 10, 1989
Digital video effects apparatus
GRASS VALLEY GROUP15 citations73
US4700232AOct 13, 1987
Interpolator for television special effects system
GRASS VALLEY GROUP17 citations73
US4947254AAug 7, 1990
Layered mix effects switcher architecture
GRASS VALLEY GROUP16 citations72
US5235423AAug 10, 1993
Controllable pseudo random noise pattern generator for use in video special effects
GRASS VALLEY GROUP14 citations71