US 12,307,260 B2
Displaying content transmitted by an external device based on detection of a connected state by display firmware
Yi-Cheng Chen, Hsinchu (TW); and Yao-Ching Chiu, Hsinchu (TW)
Assigned to REALTEK SEMICONDUCTOR CORP., Hsinchu (TW)
Filed by REALTEK SEMICONDUCTOR CORP., Hsinchu (TW)
Filed on Jan. 13, 2023, as Appl. No. 18/097,069.
Claims priority of application No. 111123523 (TW), filed on Jun. 23, 2022.
Prior Publication US 2023/0418621 A1, Dec. 28, 2023
Int. Cl. G06F 9/44 (2018.01); G06F 9/4401 (2018.01)
CPC G06F 9/4411 (2013.01) 18 Claims
OG exemplary drawing
 
1. An electronic system comprising:
a plurality of central processing units comprising a first central processing unit and a second central processing unit; and
a first memory configured to store a display firmware;
wherein the central processing units are configured to execute the following steps during a boot procedure after the electronic system is powered up:
(a) loading and checking the display firmware by the first central processing unit;
(b) determining whether the electronic system is in a first connected state by the second central processing unit based on the display firmware;
(c) in response to that the electronic system is in the first connected state, executing a first pre-defined procedure and an external device display procedure by the first central processing unit and the second central processing unit together with a plurality of collaborating central processing units of the central processing units, so that a content transmitted by an external device corresponding to the first connected state is displayed, wherein the external device display procedure is executed based on a plurality of settings stored in a data area; and
(d) in response to that the electronic system is not in the first connected state, executing a second pre-defined procedure by the first central processing unit, wherein the external device is coupled to the electronic system through a high definition multimedia interface, and the step (c) comprises:
executing the first pre-defined procedure by the first central processing unit;
performing audio processing on the external device by a third central processing unit of the central processing units; and
processing a high-bandwidth digital content protection authentication proposed by the external device by a fourth central processing unit of the central processing units.