Inventor

JIRKA HOWARD F

US7 patents

⚠️ This page may combine multiple inventors who share the name “JIRKA HOWARD F”. Patents are grouped by organization below to help distinguish them — per-person disambiguation is on the roadmap.

ZENITH RADIO CORP

3 patents

US4080628AMar 21, 1978

Expanded-signal image enhancement system

ZENITH RADIO CORP17 citations71

US3935384AJan 27, 1976

Network for generating a CRT control signal for enhancing the edges of television images

ZENITH RADIO CORP8 citations71

US3936869AFeb 3, 1976

Automatic color level circuit with peak detector

ZENITH RADIO CORP4 citations60

AMERICAN TELEPHONE & TELEGRAPH

2 patents

US4780696AOct 25, 1988

Multifilar transformer apparatus and winding method

AMERICAN TELEPHONE & TELEGRAPH42 citations90

US4679132AJul 7, 1987

Floating battery feed circuit using multifilar transformer

AMERICAN TELEPHONE & TELEGRAPH10 citations71

OAK INDUSTRIES INC

1 patent

US4340906AJul 20, 1982

Video signal coding by video signal polarity reversal on the basis of brightness level comparison

OAK INDUSTRIES INC123 citations93

BELL TELEPHONE LABOR INC

1 patent

US4402039AAug 30, 1983

Telephone line circuit

BELL TELEPHONE LABOR INC14 citations71