Device and method to mark digital audio or audio and/or video content

    公开(公告)号:US09813780B2

    公开(公告)日:2017-11-07

    申请号:US15032165

    申请日:2014-11-03

    Abstract: A receiver device having a processor, memories, descrambler and decoders modules configured to produce a sequence of elementary media content packets. The receiver device further comprises a marker unit configured to mark data in the sequence of elementary media content packets according to a pattern defined by an internal parameter associated to the receiving device. The marker unit is configured to determine, in the sequence of elementary media content packets at least one segment of a predetermined length and starting at a predetermined position in the sequence, to divide the segment into a predetermined number of contiguous windows including data of all or part of at least one elementary media content packet. Each window in the segment defined in the sequence of elementary media content packets is indexed by an index defining a position of a window in the segment. The marker unit codes the internal parameter by applying a mathematical transformation function, obtaining a resulting bits string, calculates position indices of a predetermined number of windows on the basis of all or a portion of the resulting bits string, said predetermined number of windows being lower than the number of windows in the segment, and modifies data in the windows designated by the calculated position indices. The windows including modified data and the windows including original data from within the segment of elementary media content packets a unique pattern representing the internal parameter associated to the receiving device.

    METHOD, DEVICE AND STORAGE MEDIUM FOR PLAYING AUDIO

    公开(公告)号:US20170186440A1

    公开(公告)日:2017-06-29

    申请号:US15363175

    申请日:2016-11-29

    Applicant: Xiaomi Inc.

    CPC classification number: G10L19/22 G10L19/008 H04N21/4398 H04N21/8106

    Abstract: The present disclosure relates to a method, a device and storage medium for selecting a media device to play an audio file based on determined attributes of media devices. The selection process includes acquiring a first audio decoding parameter of a third party terminal externally connected to a split-type host, and a second audio decoding parameter of the split-type host. The selection process further includes selecting a device with a greater converting capability from the third party terminal and the split-type host according to the first audio decoding parameter and a second audio decoding parameter. The selected device then plays the audio by the selected device, wherein both the first and second audio decoding parameters include at least a scheme for audio decoding.

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