公开(公告)号：US20180359497A1

公开(公告)日：2018-12-13

申请号：US15746242

申请日：2016-07-27

Applicant: LG ELECTRONICS INC.

Inventor： Giwon PARK ,  Dongcheol KIM ,  Byungjoo LEE ,  Youngjun JO ,  Hyunbee PARK ,  Taesung LIM

IPC: H04N21/235 ,  H04N21/4363 ,  H04L29/06 ,  H04W8/00

CPC classification number: H04N21/2353 ,  H04L65/1069 ,  H04L65/4084 ,  H04L65/608 ,  H04N21/43637 ,  H04N21/8126 ,  H04W8/005

Abstract: A method and a device for transmitting metadata in a WFD are provided. Particularly, a WFD source forms a WFD frame including a WFD header and metadata. The WFD source transmits, to a WFD sink, a packet stream created by packetizing a metadata stream including the WFD frame. The WFD header includes a metadata structure field and a metadata update indicator. The metadata structure field indicates whether the metadata has a video metadata structure or an audio metadata structure. The metadata update indicator indicates that previous metadata is updated such that all of the previous metadata is replaced with new metadata, or that the previous metadata is incrementally updated together with updated metadata.