US 12,439,117 B2
Optical link supporting HDMI
Dong Pyeong Yang, Seongnam-si (KR); and Doo Soo Ha, Seoul (KR)
Assigned to OPTICIS CO., LTD., Gyeonggi-Do (KR)
Filed by OPTICIS CO., LTD., Seongnam-si (KR)
Filed on Dec. 29, 2023, as Appl. No. 18/400,747.
Claims priority of application No. 10-2022-0191031 (KR), filed on Dec. 30, 2022.
Prior Publication US 2024/0223846 A1, Jul. 4, 2024
Int. Cl. H04N 21/4363 (2011.01); H04N 7/22 (2006.01)
CPC H04N 21/43635 (2013.01) [H04N 7/22 (2013.01)] 16 Claims
OG exemplary drawing
 
1. An optical link connected between a display source and a display sink to constitute a high-definition multimedia interface (HDMI) system and comprising a main channel for transmitting main data comprising image information and a display data channel (DDC) that transmits auxiliary data related to rendering of the display sink,
wherein the optical link comprises a control logic circuit, which stores the auxiliary data transmitted via the DDC between the display source and the display sink and is involved in transmission of the auxiliary data according to a request for the auxiliary data transmitted from the display source to the display sink and a response to the request, and
the control logic circuit determines whether the auxiliary data requested from the display source is transmittable, and transmits the stored auxiliary data to the display source together with an acknowledgment (ACK) signal indicating whether the display sink receives the request for the auxiliary data,
wherein the transmission of the auxiliary data according to the request for the auxiliary data from the display source and the response to the request is performed by an inter-integrated circuit I2C data frames transmitted on the DDC, and
the control logic circuit determines whether the auxiliary data requested from the display source is transmittable from a device address comprising address information of the display sink to which the auxiliary data is requested and a register address comprising register address information of the requested auxiliary data, among the I2C data frames.