Global Patent Index - EP 3146713 A4

EP 3146713 A4 20180103 - SYNCHRONIZED LIGHT SOURCE FOR ROLLING SHUTTER IMAGERS

Title (en)

SYNCHRONIZED LIGHT SOURCE FOR ROLLING SHUTTER IMAGERS

Title (de)

SYNCHRONISIERTE LICHTQUELLE FÜR ROLLBLENDENBILDGEBER

Title (fr)

SOURCE DE LUMIÈRE SYNCHRONISÉE POUR IMAGEURS DU TYPE À "VOLET ROULANT"

Publication

EP 3146713 A4 20180103 (EN)

Application

EP 14892253 A 20140519

Priority

US 2014038563 W 20140519

Abstract (en)

[origin: WO2015178879A1] A lighting system adapted for use with a rolling shutter imagers. The system uniquely provides PWM-control of a light source in the context of an imager with a "rolling- shutter"-type exposure architecture that operates on a line-by-line basis rather than a frame -by- frame basis. The preferred embodiment comprises a lamp such as a LED, a drive circuit coupled to the lamp capable of energizing the lamp for switching the lamp on and off, and a lamp control circuit coupled to the drive circuit with a means for receiving a line timing signal from an imaging system, the lamp control circuit synchronously energizing the lamp with the line timing signal via the drive circuit, the line timing signal being based upon the horizontal line rate of the imager.

IPC 8 full level

H04N 5/353 (2011.01); G03B 13/00 (2006.01); H04N 5/235 (2006.01); H04N 5/374 (2011.01)

CPC (source: EP)

G03B 9/70 (2013.01); H04N 5/2256 (2013.01); H04N 5/2354 (2013.01); G03B 2215/0567 (2013.01); H04N 5/353 (2013.01); H04N 2005/2255 (2013.01)

Citation (search report)

Designated contracting state (EPC)

AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

DOCDB simple family (publication)

WO 2015178879 A1 20151126; CA 2949362 A1 20151126; EP 3146713 A1 20170329; EP 3146713 A4 20180103; JP 2017525304 A 20170831

DOCDB simple family (application)

US 2014038563 W 20140519; CA 2949362 A 20140519; EP 14892253 A 20140519; JP 2017514251 A 20140519