Sibeam, Inc.

Kyeong Ryu

Jeffrey M Gilbert

Prakash Kamath

Kumar Mahesh

Karthik Krishnaswami

Karen Wang

Chuen-Shen (Bernard) Shung

Chih-Yuan Hsieh

A wireless content protection system includes a coordinator, a source device, and a sink device. The coordinator includes a scheduler. The source and sink devices each have a content protection manager. One of the content protection manager allocates and releases bandwidth via the coordinator for a test message and a response message for a round-trip time computation. The test message is transmitted in a source-to-sink channel time block. The response message is transmitted in a sink-to-source channel time block. The round-trip time is the period between the end of the source-to-sink channel time block and the beginning of the sink-to-source channel time block.

Wireless proximity estimation

Growing community of inventors

Danville, CA, United States of America

Kyeong Ryu