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

    公开(公告)号:US20230120280A1

    公开(公告)日:2023-04-20

    申请号:US17947878

    申请日:2022-09-19

    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. Disclosed example apparatus also swap at least two symbols of the watermark when the timestamp is to represent a second one of the timestamp cycles, but do not swap the at least two symbols of the watermark when the timestamp is to represent a first one of the timestamp cycles. Disclosed example apparatus further embed the watermark in a first piece of media.

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

    公开(公告)号:US11546674B2

    公开(公告)日:2023-01-03

    申请号:US17332636

    申请日:2021-05-27

    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 FOR PANELIST-BASED LOGINS USING VOICE COMMANDS

    公开(公告)号:US20220415331A1

    公开(公告)日:2022-12-29

    申请号:US17356465

    申请日:2021-06-23

    Abstract: Methods and apparatus for panelist-based logins using voice commands are disclosed herein. A disclosed example apparatus for identifying a user as a member of an audience includes a memory and at least one processor to execute machine readable instructions to at least access audio emitted by a speech recognition system, the audio generated based on a request spoken by the user, identify at least one of a watermark or a fingerprint included in the audio, the watermark or fingerprint including identifying information to identify a user and an indication of the presence of the user, and record the indication of the presence of the user in an audience.

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

    公开(公告)号:US11451884B2

    公开(公告)日:2022-09-20

    申请号:US17332643

    申请日:2021-05-27

    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. Disclosed example apparatus also swap at least two symbols of the watermark when the timestamp is to represent a second one of the timestamp cycles, but do not swap the at least two symbols of the watermark when the timestamp is to represent a first one of the timestamp cycles. Disclosed example apparatus further embed the watermark in a first piece of media.

    Methods and apparatus for increasing the robustness of media signatures

    公开(公告)号:US11316603B2

    公开(公告)日:2022-04-26

    申请号:US17140914

    申请日:2021-01-04

    Abstract: Methods and apparatus for determining increasing robustness of media signatures are disclosed. An example apparatus includes a characteristic analyzer to determine a first difference between (A) a first characteristic of an audio signal at a first time and (B) a second characteristic of the audio signal at a second time. The apparatus further includes a characteristic enhancer to compare the first difference to a first threshold; at least one of (A) boost the first characteristic of the audio signal at the first time or (B) attenuate the second characteristic of the audio signal at the second time when the first difference does not satisfy the threshold to create an enhanced audio signal; and determine whether a second difference between a third characteristic of the enhanced audio signal at the first time and a fourth characteristic of the enhanced audio signal at the second time satisfies the threshold, the third characteristic corresponding to the first characteristic, the fourth characteristic corresponding to the second characteristic.

    AUDIO WATERMARKING FOR PEOPLE MONITORING

    公开(公告)号:US20220122618A1

    公开(公告)日:2022-04-21

    申请号:US17565167

    申请日:2021-12-29

    Abstract: Disclosed example people monitoring methods include detecting a first watermark in a first audio signal obtained from an acoustic sensor, the first watermark identifying media presented by a monitored media device, determining whether a second watermark, different from the first watermark, is embedded in the first audio signal obtained from the acoustic sensor, the second watermark identifying at least one of a mobile device or a user of the mobile device, classifying the second watermark as a media watermark or a people monitoring watermark based on a characteristic of the second watermark, and when the second watermark is determined to be embedded in the first audio signal, reporting at least one of the second watermark or information decoded from the second watermark to identify at least one of the mobile device or the user of the mobile device as being exposed to the media presented by the monitored media device.

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