Patent attributes
In a content display system 100, a control unit 210 of a controller 200 performs a display control process. During the display control process, moreover, a reproduction monitoring process is performed, to thereby monitor whether or not content is displayed as scheduled. In the reproduction monitoring process, a pattern corresponding to the content is laid over the content in a display period corresponding to the display period of the content, and is used for the display performed by a display device 300. On the other hand, on a detection device 400, a pattern through the display performed by the display device 300 is detected. The detected pattern is compared with the pattern laid over the content by a comparison unit 240. The control unit 210 judges that the content is displayed as scheduled, if the both patterns match as a result of the comparison.
