Methods and apparatus for automatic TV on/off detection
First Claim
Patent Images
1. A method to detect a power state of an information presentation device, the method comprising:
- storing a first indication that the information presentation device is in an indeterminate state if a first measurement indicative of an amount of power drawn by the information presentation device is greater than a first threshold and less than a second threshold;
in response to determining that the information presentation device is in the indeterminate state;
initiating a delay period at a first time andcomparing a plurality of second measurements to the first threshold, respective ones of the second measurements indicative of the amount of power drawn by the information presentation device at respective times during the delay period; and
after the first time, at least one of;
when the information presentation device is detected at a second time as being in an OFF power state based on at least one of the plurality of second measurements being less than the first threshold, storing a second indication to back credit the information presentation device as being in the OFF power state for a duration between the first and second times;
orwhen the information presentation device is detected at the second time as being in an ON power state based on the plurality of second measurements being greater than the first threshold, storing a third indication to back credit the information presentation device as being in the ON power state for the duration between the first and second times.
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Abstract
Methods and apparatus are disclosed for automatic TV ON/OFF detection. An example method includes detecting a power state of an information presentation device. The method includes comparing, using a processor, a measurement indicative of an amount of power drawn by the information presentation device to a first threshold. The method also includes comparing the measurement to a second threshold. The method also includes storing an indication that the information presentation device is in an indeterminate state if the measurement is greater than the first threshold and less than the second threshold.
287 Citations
31 Claims
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1. A method to detect a power state of an information presentation device, the method comprising:
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storing a first indication that the information presentation device is in an indeterminate state if a first measurement indicative of an amount of power drawn by the information presentation device is greater than a first threshold and less than a second threshold; in response to determining that the information presentation device is in the indeterminate state; initiating a delay period at a first time and comparing a plurality of second measurements to the first threshold, respective ones of the second measurements indicative of the amount of power drawn by the information presentation device at respective times during the delay period; and after the first time, at least one of; when the information presentation device is detected at a second time as being in an OFF power state based on at least one of the plurality of second measurements being less than the first threshold, storing a second indication to back credit the information presentation device as being in the OFF power state for a duration between the first and second times;
orwhen the information presentation device is detected at the second time as being in an ON power state based on the plurality of second measurements being greater than the first threshold, storing a third indication to back credit the information presentation device as being in the ON power state for the duration between the first and second times. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 23, 24, 25)
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9. An apparatus to detect a power state of an information presentation device, comprising:
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memory to store a first indication that the information presentation device is in an indeterminate state when a first measurement indicative of an amount of power drawn by the information presentation device is greater than a first threshold and the first measurement is less than a second threshold; a timer to initiate a delay period at a first time in response to the indication of the indeterminate state; a comparator to compare a plurality of measurements to the first threshold, respective ones of the plurality of measurements indicative of the amount of power drawn by the information presentation device at respective times during the delay period; and the memory further to, at least one of; when the information presentation device is detected in an OFF power state at a second time based on at least one of the plurality of measurements being less than the first threshold, store a second indication to back credit the information presentation device as being in the OFF power state for a duration between the first and second times;
orwhen the information presentation device is detected in an ON power state at the second time based on none of the plurality of measurements being less than the first threshold, store a third indication to back credit the information presentation device as being in the ON power state for the duration between the first and second times. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16, 26, 27, 28)
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17. A tangible computer readable storage medium comprising instructions that, when executed, cause a machine to at least:
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store a first indication that an information presentation device is in an indeterminate state if a first measurement indicative of an amount of power drawn by the information presentation device is greater than a first threshold and less than a second threshold; based on a determination that the information presentation device is in the indeterminate state; initiate a delay period at a first time and compare a plurality of second measurements to the first threshold, respective ones of the second measurements indicative of the amount of power drawn by the information presentation device at respective times during the delay period; and after the first time, at least one of; when the information presentation device is detected at a second time as being in an OFF power state based on at least one of the plurality of second measurements being less than the first threshold, store a second indication to back credit the information presentation device as being in the OFF power state for a duration between the first and second times;
orwhen the information presentation device is detected at the second time as being in an ON power state based on none of the plurality of second measurements being less than the first threshold, store a third indication to back credit the information presentation device as being in the ON power state for the duration between the first and second times. - View Dependent Claims (18, 19, 20, 21, 22, 29, 30, 31)
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Specification