Methods and apparatus to extend a timestamp range supported by a watermark

    公开(公告)号:US12206958B2

    公开(公告)日:2025-01-21

    申请号:US18512299

    申请日:2023-11-17

    Abstract: Methods, apparatus, systems and articles of manufacture to extend a time range supported by a watermark are disclosed. Example watermark encoding apparatus disclosed herein determine which one of a plurality of timestamp cycles is to be represented by a timestamp of a watermark, the timestamp including a set of timestamp symbols, a first subset of data symbols and a second subset of data symbols. Disclosed example apparatus also modify the first subset of data symbols of the watermark based on a further timestamp symbol not included in the set of timestamp symbols of the timestamp, but not modify the second subset of data symbols based on the further timestamp symbol, the further timestamp symbol to identify the one of the plurality of timestamp cycles to be represented by the timestamp of the watermark. Disclosed example apparatus further embed the watermark in a piece of media.

    APPARATUS AND METHODS FOR WATERMARKING USING STARTING PHASE MODULATION

    公开(公告)号:US20250008143A1

    公开(公告)日:2025-01-02

    申请号:US18761697

    申请日:2024-07-02

    Abstract: Methods, apparatus, systems and articles of manufacture are disclosed for watermarking using starting phase modulation. An example apparatus includes at least one memory, machine readable instructions, and processor circuitry to execute the machine readable instructions to at least access a media signal, access a watermark symbol to be encoded into the media signal, determine bit values of the watermark symbol, determine a common starting phase value for watermark components of the watermark symbol, the common starting phase value to represent at least one of the bit values of the watermark symbol, and embed the watermark components into the media signal based on the common starting phase value.

    METHODS AND APPARATUS TO EXTEND A TIMESTAMP RANGE SUPPORTED BY A WATERMARK

    公开(公告)号:US20240089562A1

    公开(公告)日:2024-03-14

    申请号:US18512299

    申请日:2023-11-17

    CPC classification number: H04N21/8358 H04N21/23892 H04N21/2407 H04N21/8352

    Abstract: Methods, apparatus, systems and articles of manufacture to extend a time range supported by a watermark are disclosed. Example watermark encoding apparatus disclosed herein determine which one of a plurality of timestamp cycles is to be represented by a timestamp of a watermark, the timestamp including a set of timestamp symbols, a first subset of data symbols and a second subset of data symbols. Disclosed example apparatus also modify the first subset of data symbols of the watermark based on a further timestamp symbol not included in the set of timestamp symbols of the timestamp, but not modify the second subset of data symbols based on the further timestamp symbol, the further timestamp symbol to identify the one of the plurality of timestamp cycles to be represented by the timestamp of the watermark. Disclosed example apparatus further embed the watermark in a piece of media.

    Methods and apparatus to extend a timestamp range supported by a watermark

    公开(公告)号:US11877039B2

    公开(公告)日:2024-01-16

    申请号:US18091978

    申请日:2022-12-30

    CPC classification number: H04N21/8358 H04N21/23892 H04N21/2407 H04N21/8352

    Abstract: Methods, apparatus, systems and articles of manufacture to extend a time range supported by a watermark are disclosed. Example watermark encoding apparatus disclosed herein determine which one of a plurality of timestamp cycles is to be represented by a timestamp of a watermark, the timestamp including a set of timestamp symbols, a first subset of data symbols and a second subset of data symbols. Disclosed example apparatus also modify the first subset of data symbols of the watermark based on a further timestamp symbol not included in the set of timestamp symbols of the timestamp, but not modify the second subset of data symbols based on the further timestamp symbol, the further timestamp symbol to identify the one of the plurality of timestamp cycles to be represented by the timestamp of the watermark. Disclosed example apparatus further embed the watermark in a piece of media.

Patent Agency Ranking