Invention Grant
US08199833B2 Time shift and tonal adjustment to support video quality adaptation and lost frames
有权
时移和音调调整,以支持视频质量调整和丢帧
- Patent Title: Time shift and tonal adjustment to support video quality adaptation and lost frames
- Patent Title (中): 时移和音调调整,以支持视频质量调整和丢帧
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Application No.: US12197814Application Date: 2008-08-25
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Publication No.: US08199833B2Publication Date: 2012-06-12
- Inventor: James D. Bennett
- Applicant: James D. Bennett
- Applicant Address: US CA Irvine
- Assignee: Broadcom Corporation
- Current Assignee: Broadcom Corporation
- Current Assignee Address: US CA Irvine
- Agency: Garlick & Markison
- Main IPC: H04N7/12
- IPC: H04N7/12 ; G10L21/04

Abstract:
A digital electronic device includes a time shifter/tone adapter that eliminates unwanted audio effects at recipient device, that includes stutter and loss of audio synchronization, as a result of video quality adaptation (the video quality adapter varies frame rate, pixel and color resolutions without having a discernable difference in picture quality, that is, drops many frames in every frame set). The tone adaptation involves gradual frequency shifting, that is, gradual up shifting until synchronization with video is obtained (time shifting), then gradual down shifting. The recipient device (or a set top box) may contain a time shifter/tone adapter that eliminates unwanted audio effects at the recipient devices that may include stutter and loss of audio synchronization, as a result of loss of packets in channel.
Public/Granted literature
- US20100046639A1 TIME SHIFT AND TONAL ADJUSTMENT TO SUPPORT VIDEO QUALITY ADAPTATION AND LOST FRAMES Public/Granted day:2010-02-25
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