Communication protocol for communicating control data.

摘要

A communication protocol can communicate data among apparatus by a simple procedure erriciently. In an AV center (1) (D2B control unit (1a)), for example, a communication mode thereof is set in the master transmission mode, and a packet of one frame is transmitted to a TV (2). In the TV 2 (D2B control unit (2a)), its communication mode is set in the slave reception mode. When a packet of one frame from the AV center (1) is received by the TV (2), a communication between the AV center (1) and the TV (2) is ended. <IMAGE>