US 12,120,788 B2
Interfaces and techniques for cost effective control of light emitting diodes in a vehicle
Gernot Unterweger, Latschach (AT); Mathias Sedner, Egelsbach (DE); Andrea Scenini, Montegrotto Terme (IT); and Hans-Peter Kreuter, Villach (AT)
Assigned to Infineon Technologies AG, Neubiberg (DE)
Filed by Infineon Technologies AG, Neubiberg (DE)
Filed on Apr. 12, 2021, as Appl. No. 17/228,299.
Prior Publication US 2022/0330400 A1, Oct. 13, 2022
Int. Cl. H05B 45/30 (2020.01); B60Q 1/14 (2006.01); B60Q 3/80 (2017.01); H05B 47/125 (2020.01)
CPC H05B 45/30 (2020.01) [B60Q 1/1415 (2013.01); B60Q 3/80 (2017.02); H05B 47/125 (2020.01); B60Q 2300/054 (2013.01)] 30 Claims
OG exemplary drawing
 
1. A control circuit configured to simultaneously control a plurality of different light emitting diode (LED) driver circuits, wherein the control circuit is configured to:
generate a multicast of pixel intensity values based on data in memory or data received from a data source, wherein the multicast of pixel intensity values comprises a plurality of luminance values to be used by the plurality of different LED driver circuits to drive different sets of LEDs; and
output the multicast of pixel intensity values simultaneously to each of the plurality of different LED driver circuits on an interface that connects the control circuit to each of the plurality of different LED driver circuits, wherein the interface comprises a one-wire uni-directional interface, wherein the interface is a second interface and the control circuit is configured to:
receive video data via a first interface in a video frame-by-video frame manner; and
output the multicast via the second interface in a row-by-row manner.