US 12,289,666 B2
Bluetooth audio broadcasting system and related multi-member bluetooth device supporting bluetooth low energy audio broadcasting operations and capable of avoiding user from missing external alert signals or specific sounds
Yi-Cheng Chen, Hsinchu (TW); Bi Wei, Suzhou (CN); Yu Hsuan Liu, Hsinchu (TW); and Chia Chun Hung, Hsinchu (TW)
Assigned to REALTEK SEMICONDUCTOR CORP., Hsinchu (TW)
Filed by Realtek Semiconductor Corp., Hsinchu (TW)
Filed on Jun. 21, 2022, as Appl. No. 17/845,429.
Application 17/845,429 is a continuation in part of application No. 17/553,104, filed on Dec. 16, 2021, abandoned.
Claims priority of application No. 202011510985.4 (CN), filed on Dec. 18, 2020; and application No. 110143295 (TW), filed on Nov. 19, 2021.
Prior Publication US 2022/0322209 A1, Oct. 6, 2022
This patent is subject to a terminal disclaimer.
Int. Cl. H04W 48/10 (2009.01); G06F 3/16 (2006.01); H04W 48/16 (2009.01)
CPC H04W 48/10 (2013.01) [G06F 3/165 (2013.01); H04W 48/16 (2013.01)] 9 Claims
OG exemplary drawing
 
1. A Bluetooth audio broadcasting system (700), comprising:
a host device (560), comprising:
a communication circuit (561), and
a processing circuit (565) coupled with the communication circuit (561);
an audio broadcasting device (150), arranged to operably broadcast one or more Bluetooth LE (BLE) audio packets through a Broadcast Isochronous Stream (BIS) logical transport;
a first Bluetooth member device (110), comprising:
a first Bluetooth communication circuit (111), arranged to operably receive the one or more BLE audio packets;
a first audio processing circuit (112); and
a first control circuit (114), coupled with the first Bluetooth communication circuit (111) and the first audio processing circuit (112), and arranged to operably parse the one or more BLE audio packets received by the first Bluetooth communication circuit (111) to acquire a predetermined audio data, and to operably instruct the first audio processing circuit (112) to control a first audio playback circuit (113) to playback the predetermined audio data, wherein the first control circuit (114) is further arranged to operably utilize a first wireless communication circuit (715) to transmit the detection signal (DS) to the host device (560);
a second Bluetooth member device (120), comprising:
a second Bluetooth communication circuit (121), arranged to operably receive the one or more BLE audio packets broadcasted by the audio broadcasting device (150) through the BIS logical transport;
a second audio processing circuit (122); and
a second control circuit (124), coupled with the second Bluetooth communication circuit (121) and the second audio processing circuit (122), and arranged to operably parse the one or more BLE audio packets received by the second Bluetooth communication circuit (121) to acquire the predetermined audio data, and to operably instruct the second audio processing circuit (122) to control a second audio playback circuit (123) to playback the predetermined audio data; and
wherein the audio broadcasting device (150) is further arranged to operably generate and transmit a target control command to the first Bluetooth member device (110) and the second Bluetooth member device (120) when the first Bluetooth member device (110) or the second Bluetooth member device (120) receives an alert signal, or when a specific ambient sound occurs in a surrounding environment of the first Bluetooth member device (110) or the second Bluetooth member device (120);
wherein the first Bluetooth communication circuit (111) is further arranged to operably receive the target control command, and the first control circuit (114) is further arranged to operably control the first audio processing circuit (112) to reduce an audio volume of the first audio playback circuit (113) to be lower than a predetermined threshold according to the target control command;
wherein the second Bluetooth communication circuit (121) is further arranged to operably receive the target control command, and the second control circuit (124) is further arranged to operably control the second audio processing circuit (122) to reduce an audio volume of the second audio playback circuit (123) to be lower than the predetermined threshold according to the target control command;
wherein the processing circuit (565) is arranged to operably generate an alert notice (ALN) when the detection signal (DS) transmitted from the first Bluetooth member device (110) is received by the communication circuit (561), and to operably utilize the communication circuit (561) to transmit the alert notice (ALN) to the audio broadcasting device (150);
wherein the audio broadcasting device (150) generates the target control command when the alert notice (ALN) is received by the audio broadcasting device (150).