Patent ID: 11900007
Assignee: HISENSE VISUAL TECHNOLOGY CO., LTD.
Field: Audio-visual technology (Electrical engineering)
Classification: CPC G  H | IPC G  H

Claim 0:
1. A display apparatus, comprising:
a display configured to display an image from a broadcast system or Internet and/or a user interface;
an input interface configured to connect with an external device and comprising a HDMI port, wherein the external device comprises one or more types of power amplifier device;
a processor in connection with the display and the input interface and configured to:
upon detecting access of a first power amplifier device, output a high-level Hotplug signal at a Hotplug port of the display apparatus, wherein the first power amplifier device comprises: a power amplifier device that supports e-ARC function or a power amplifier device that supports ARC function;
monitor whether a common-mode data packet from the first power amplifier device is received within a first preset duration;
in response to the common-mode data packet being received within the first preset duration, send a heartbeat packet to the first power amplifier device, and monitor whether a heartbeat response as a reply to the heartbeat packet sent from the first power amplifier device is received within a second preset duration after sending the heartbeat packet;
in response to the heartbeat response from the first power amplifier device being received within the second preset duration, determine that the first power amplifier device is a power amplifier device that supports e-ARC function; and
in response to the heartbeat response from the first power amplifier device being not received within the second preset duration, determine that the first power amplifier device is a power amplifier device that supports ARC function.