IPC Subgroup
H05B 45/347 Dynamic headroom control [DHC]
Introduced: January 2020
Full Title
Circuit arrangements for operating light-emitting diodes [LED] > Driver circuits > Dynamic headroom control [DHC]
Classification Context
- Section:
- ELECTRICITY
- Class:
- ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- Subclass:
- ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
Additional Content
Dynamic Headroom Control [DHC] The term Dynamic Headroom Control refers to the dynamic adjustment of a LED power supply voltage to the lowest level that is sufficient to maintain correct operation of the current sources that supply the LED(s), thereby minimising wasteful power dissipation in the current sources.
Top Applicants
Top 10 applicants by patent filingsfor class H05, 2013–2023, worldwide · Source: EPO PATSTAT
- SAMSUNG ELECTRONICS COMPANY KR 7,201
- PANASONIC INTELLECTUAL PROPERTY 6,828
- SEMICONDUCTOR ENERGY LABORATORY COMPANY 3,988
- LG ELECTRONICS KR 3,564
- PANASONIC INTELLECTUAL PROPERTY JP 3,533
- SAMSUNG DISPLAY KR 3,310
- FUJI JP 2,870
- SAMSUNG ELECTRO-MECHANICS COMPANY KR 2,675
- GUANGDONG OPPO MOBILE TELECOMMUNICATIONS CORPORATION 2,665
- MURATA MANUFACTURING COMPANY JP 2,634