Inventor
O'GWYNN DAVID C
US11 patents
⚠️ This page may combine multiple inventors who share the name “O'GWYNN DAVID C”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.
AMPEX
10 patentsUS4731679AMar 15, 1988
Method and apparatus for transporting a recording medium with an adaptive velocity change profile
AMPEX112 citations94
US4768102AAug 30, 1988
Method and apparatus for synchronizing a controller to a VTR for editing purposes
AMPEX31 citations92
US4970581ANov 13, 1990
Circuit for and method of detecting color field sequence in a color video signal
AMPEX16 citations73
US4745496AMay 17, 1988
Apparatus and method for adjusting the tracking position of a magnetic head along a magnetic track
AMPEX8 citations73
US4689706AAug 25, 1987
Apparatus and method for adjusting the respective positions of a magnetic head and video information along a magnetic track
AMPEX12 citations73
US4631605ADec 23, 1986
Multiple speed scanner servo system for protecting the heads and tape of helical recorders
AMPEX16 citations73
US4514672AApr 30, 1985
Adaptive apparatus and method for control
AMPEX14 citations73
US4446389AMay 1, 1984
Quadrature tach decoder circuit
AMPEX14 citations73
US4401923AAug 30, 1983
Digital open loop tape tension control circuit for tape recorders and the like
AMPEX15 citations73
US4561608ADec 31, 1985
Adaptive end of tape detection apparatus and method
AMPEX17 citations71