Video signal monitoring method, video signal monitoring device, and display device
A video signal monitoring method includes detecting at least one of luminance or chromaticity in a predetermined region among regions of a video displayed on a display device; converting the at least one of detected luminance or chromaticity into video identification information for identifying the video; and outputting the video identification information and a time at which the video was displayed.
1. A video signal monitoring method, comprising:
detecting at least one of luminance or chromaticity in a predetermined region among regions of a video displayed on a display device;
converting the at least one of detected luminance or chromaticity into video identification information for identifying the video; and
outputting the video identification information and a time at which the video was displayed.
2. The video signal monitoring method according to claim 1 , further comprising:
determining whether or not the video has been displayed on a basis of whether or not the video identification information and the time obtained in the outputting match video identification information added to the video displayed on the display device and a scheduled display time of the added video identification information, respectively.
3. The video signal monitoring method according to claim 1 , wherein the detecting is performed by a sensor installed in the display device.
4. The video signal monitoring method according to claim 3 , wherein the sensor comprises a luminance sensor and detects luminance that varies with time in the predetermined region.
5. The video signal monitoring method according to claim 3 , wherein the sensor comprises a color sensor and detects chromaticity that varies with time in the predetermined region.
6. The video signal monitoring method according to claim 3 , wherein the sensor detects the at least one of luminance or chromaticity at a predetermined period of time after a start of display of the video.
7. A video signal monitoring device, comprising:
a sensing result converting unit configured to convert at least one of luminance or chromaticity, in a predetermined region among regions of a video displayed on a display device, into video identification information for identifying the video;
a time measuring unit configured to acquire a time or a period of time at or during which the video was displayed; and
a sensing result reading unit configured to output the video identification information and the time or the period of time.
8. The video signal monitoring device according to claim 7 , further comprising:
a video identification information determining unit configured to determine whether or not the video has been displayed on a basis of whether or not the video identification information and the time obtained by the sensing result reading unit match video identification information added to the video displayed on the display device and a scheduled display time of the added video identification information, respectively.
9. The video signal monitoring device according to claim 7 , wherein the sensing result converting unit receives the at least one of luminance or chromaticity from a sensor installed in the display device.
10. The video signal monitoring device according to claim 7 , further comprising a sensor configured to detect the at least one of luminance or chromaticity.
11. The video signal monitoring device according to claim 9 , wherein the sensor comprises a luminance sensor and detects luminance that varies with time in the predetermined region.
12. The video signal monitoring device according to claim 9 , wherein the sensor comprises a color sensor and detects chromaticity that varies with time in the predetermined region.
13. The video signal monitoring device according to claim 9 , wherein the sensor detects the at least one of luminance or chromaticity at a predetermined period of time after a start of display of the video.
14. A display device, comprising:
a display unit configured to display a video;
a sensing result converting unit configured to convert at least one of luminance or chromaticity, in a predetermined region among regions of the displayed video, into video identification information for identifying the video;
a time measuring unit configured to acquire a time or a period of time at or during which the video was displayed; and
a sensing result reading unit configured to output the video identification information and the time or the period of time.
15. The display device according to claim 14 , further comprising:
a video identification information determining unit configured to determine Whether or not the video has been displayed on a basis of whether or not the video identification information and the time obtained by the sensing result reading unit match video identification information added to the displayed video and a scheduled display time of the added video identification information, respectively.
16. The display device according to claim 14 , wherein the sensing result converting unit receives the at least one of luminance or chromaticity from a sensor.
17. The display device according to claim 14 , further comprising a sensor configured to detect the at least one of luminance or chromaticity.
18. The display device according to claim 16 , wherein the sensor comprises a luminance sensor and detects the luminance that varies with time in the predetermined region.
19. The display device according to claim 16 , wherein the sensor comprises a color sensor and detects the chromaticity that varies with time in the predetermined region.
20. The display device according to claim 16 , wherein the sensor detects the at least one of luminance or chromaticity at a predetermined period of time after a start of display of the video.