METHODS AND APPARATUS FOR DETECTING ON-SCREEN MEDIA SOURCES
First Claim
Patent Images
1. A method to identify a media source comprising:
- receiving a video signal;
capturing a portion of the video signal at a region of interest;
comparing the captured portion to a template to identify the media source; and
capturing a second portion of the video signal at a second region of interest to identify an occurrence of a false positive.
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Abstract
Methods and apparatus for detecting on-screen media sources are disclosed. An example method includes monitoring a region of interest of a video signal for a first image, comparing the first image to a stored image, and confirming the media device change when the stored image differs from the first image and is associated with a secondary criterion.
208 Citations
51 Claims
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1. A method to identify a media source comprising:
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receiving a video signal; capturing a portion of the video signal at a region of interest; comparing the captured portion to a template to identify the media source; and capturing a second portion of the video signal at a second region of interest to identify an occurrence of a false positive. - View Dependent Claims (2, 3, 6, 7, 9, 10, 11, 12)
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4. (canceled)
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5. (canceled)
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8. (canceled)
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13. A method to identify a media device change comprising:
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monitoring a region of interest of a video signal for a first image; comparing the first image to a stored image; and confirming the media device change when the stored image differs from the first image and is associated with a secondary criterion. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22)
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23. (canceled)
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24. (canceled)
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25. A method to identify a media device mode comprising:
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monitoring at least one region of interest in a video signal at a first time; comparing the monitored at least one region of interest to at least one state diagram comprising a plurality of device modes to determine a media device mode candidate; monitoring the at least one region of interest at a second time; and comparing the monitored at least one region of interest to the state diagram to confirm the media device mode candidate as the media device mode. - View Dependent Claims (26)
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27. (canceled)
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28. (canceled)
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29. An apparatus to monitor a video signal comprising:
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a region of interest extractor to extract an image signal from at least one region of the video signal; an image quantizer to quantize the extracted image signal; and an object comparator to compare the quantized image signal with a reference image to identify a media device status. - View Dependent Claims (32)
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30. (canceled)
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33-49. -49. (canceled)
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50. An apparatus to process a video signal comprising:
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a framegrabber to capture the video signal at a first rate; a media source detector to quantize the video signal to improve image detection of a first and second region of interest; and an on screen display reader to compare the detected image in the first and second region of interest to a template to identify a media source. - View Dependent Claims (51)
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Specification