Patent ID: 9668017
Date: 2017-05-30
CPC Classifications: G11B,H04L,H04N

Claim:
1. A signal transmitting method for an apparatus including: receiving an uncompressed video signal from an external device via a plurality of channels comprised in a transmission path by a differential signal; transmitting a first signal to the external device via a reserved line and a Hot Plug Detect (HPD) line, which are bi-directional for transmission, comprised in the transmission path by a full duplex communication, in which the reserved line and the HPD line are of a High Definition Multimedia Interface (HDMI) cable and can form another differential signal; receiving a second signal from the external device via the reserved line and the HPD line; subtracting the first signal from the second signal to obtain a third signal; transmitting a notification of a connection state to the external device by at least one DC bias potential of the reserved line and the HPD line; and receiving a remote control signal controlling the apparatus transmitted from a remote control transmitter.