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US Patent 11418275 Audio playback system and method

Patent 11418275 was granted and assigned to Realtek on August, 2022 by the United States Patent and Trademark Office.

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TimelineTable: Further ResourcesReferences
Is a
Patent
Patent

Patent attributes

Patent Applicant
‌
Realtek
Current Assignee
‌
Realtek
Patent Jurisdiction
United States Patent and Trademark Office
United States Patent and Trademark Office
Patent Number
11418275
Patent Inventor Names
You-De Liu1
Yi-Fan Chiu1
Date of Patent
August 16, 2022
Patent Application Number
16885793
Date Filed
May 28, 2020
Patent Primary Examiner
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Marsha D. Banks-Harold
CPC Code
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H04J 3/0644
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H04J 3/0661
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H04J 3/0697
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G06F 3/165
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G06F 16/639
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H04L 65/60
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H04L 65/601
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H04L 65/4084
...

An audio playback system that includes audio playback devices each including a communication module, a playback module and a processing module is provided. The communication module receives a beacon signal and audio signal packets and generates an interrupt signal. The processing module receives the interrupt signal to retrieve an audio source timestamp corresponding to an audio source system time from the beacon signal, compares the audio source timestamp with an internal time generated based on an internal system time when the beacon signal is received to calculate a difference therebetween, receives a playback initialization signal from the audio source device that includes an audio source system playback initialization time, calculates an internal system playback initialization time according to the difference and the audio source system playback initialization time and controls the playback module to playback the audio signal packets from the internal system playback initialization time.

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