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

Claim 10:
11. A method for determining a power amplifier device in a display apparatus, comprising:
upon detecting access of a first power amplifier device to the display apparatus, outputting 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;
monitoring 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, sending a heartbeat packet to the first power amplifier device, and monitoring 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, determining 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, determining that the first power amplifier device is a power amplifier device that supports ARC function.