Scanning details of television systems; Combination thereof with generation of supply voltages

Introduced: September 1968

Last revised: January 2006

Classification Context

Section:: ELECTRICITY
Class:: ELECTRIC COMMUNICATION TECHNIQUE
Subclass:: PICTORIAL COMMUNICATION, e.g. TELEVISION

Additional Content

Picture signal generators for colour television systems Picture reproducers for colour television systems Picture signal generators for stereoscopic television systems Picture reproducers for stereoscopic television systems

Related Keywords

SCANNING in television systems

3 direct subcodes

Child Classifications

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H04N 3/02 by optical-mechanical means only
H04N 3/1 by means not exclusively optical-mechanical
H04N 3/36 Scanning of motion picture films, e.g. for telecine

Top Applicants

Top 10 applicants by patent filingsfor class H04, 2013–2023, worldwide · Source: EPO PATSTAT

QUALCOMM US 97,396
HUAWEI TECHNOLOGIES COMPANY CN 96,502
SAMSUNG ELECTRONICS COMPANY KR 86,981
TELEFONAKTIEBOLAGET LM ERICSSON (PUBL) SE 55,869
HUAWEI TECHNOLOGIES COMPANY 55,349
LG ELECTRONICS KR 53,649
CANON 33,341
SONY CORPORATION JP 32,761
ZTE CORPORATION CN 32,274
GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 28,327