Power efficient detection of watermarks in media signals
First Claim
1. A media device meter comprising:
- a watermark detector to detect watermarks in a media signal; and
a watermark controller to;
activate the watermark detector to begin a first search interval;
place the watermark detector in a sleep mode upon expiration of the first search interval in response to no valid watermarks being detected during the first search interval; and
upon expiration of a first sleep interval after placing the watermark detector in the sleep mode, activating the watermark detector to begin a second search interval.
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Accused Products
Abstract
Methods, apparatus, systems and articles of manufacture (e.g., physical storage media) to implement power efficient detection of watermarks in media signals are disclosed. Example watermark detection methods disclosed herein include initiating a first search interval in which to attempt to detect watermarks in a media signal. Disclosed example watermark detection methods also initiating a sleep mode upon expiration of the first search interval in response to no valid watermarks being detected during the first search interval. Disclosed example watermark detection methods further include, upon expiration of a first sleep interval after initiation of the sleep mode, initiating a second search interval.
32 Citations
20 Claims
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1. A media device meter comprising:
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a watermark detector to detect watermarks in a media signal; and a watermark controller to; activate the watermark detector to begin a first search interval; place the watermark detector in a sleep mode upon expiration of the first search interval in response to no valid watermarks being detected during the first search interval; and upon expiration of a first sleep interval after placing the watermark detector in the sleep mode, activating the watermark detector to begin a second search interval. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A watermark detection method comprising:
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initiating, by executing an instructions with a processor, a first search interval in which to attempt to detect watermarks in a media signal; initiating, by executing an instruction with the processor, a sleep mode upon expiration of the first search interval in response to no valid watermarks being detected during the first search interval; and upon expiration of a first sleep interval after initiation of the sleep mode, initiating, by executing an instruction with the processor, a second search interval. - View Dependent Claims (9, 10, 11, 12, 13, 14)
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15. A tangible computer readable storage medium comprising computer readable instructions which, when executed, cause a processor to at least:
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initiate a first search interval in which to attempt to detect watermarks in a media signal; initiate a sleep mode upon expiration of the first search interval in response to no valid watermarks being detected during the first search interval; and upon expiration of a first sleep interval after initiation of the sleep mode, initiate a second search interval. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification