Invention Grant
- Patent Title: Audio frame timing correction method and wireless device
- Patent Title (中): 音频帧定时校正方法和无线设备
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Application No.: US13983132Application Date: 2012-01-24
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Publication No.: US09257125B2Publication Date: 2016-02-09
- Inventor: Shinji Yokoyama
- Applicant: Shinji Yokoyama
- Applicant Address: JP
- Assignee: Hitachi Kokusai Electric Inc.
- Current Assignee: Hitachi Kokusai Electric Inc.
- Current Assignee Address: JP
- Agency: Bacon & Thomas, PLLC
- Priority: JP2011-020683 20110202
- International Application: PCT/JP2012/051417 WO 20120124
- International Announcement: WO2012/105370 WO 20120809
- Main IPC: G10L19/00
- IPC: G10L19/00 ; H04J3/06 ; H04W52/02

Abstract:
An audio frame timing correction method and a wireless device are provided. A controller generates a reference clock for audio coding/decoding such that the reference clock runs fast and moved forward within an audio data sampling interval with the remaining time becoming a margin of the interval. An audio codec decodes demodulated data based on the reference clock, and codes an audio signal based on the reference clock. A demodulator detects wireless frame deviation and determines an adjustment timing whereat the wireless frame symbol timing and the audio frame timing are corrected based on the deviation and the margin. Upon the adjustment timing, the controller synchronizes audio sampling timing with the wireless frame symbol timing.
Public/Granted literature
- US20130317832A1 AUDIO FRAME TIMING CORRECTION METHOD AND WIRELESS DEVICE Public/Granted day:2013-11-28
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