Device and method for detecting display of provided credit, and program

A sponsorship credit display detection method in a sponsorship credit display detection device that detects, in a broadcast program, a sponsorship credit display segment where a sponsorship credit display indicating a sponsor of that broadcast program has been displayed, the method comprising:

• storing a related phrase included in an announcement of the sponsorship credit display and related to the sponsorship credit display, in association with an estimation period where at least one predetermined period before or after an appearance time of the related phrase is estimated as the sponsorship credit display segment;
• performing voice recognition on an audio signal of the broadcast program;
• detecting the stored related phrase from results of the voice recognition;
• using an appearance time of the detected related phrase as a start point, estimating a period corresponding to the estimation period stored in association with the detected related phrase as the sponsorship credit display segment where the sponsorship credit display has been displayed;
• and
• detecting a segment where the estimated sponsorship credit display segment continues for at least a predetermined time period as the sponsorship credit display segment.

A computer program causing a computer to function as the sponsorship credit display detection device, the device comprising:

• a related phrase store configured to store a related phrase included in an announcement of the sponsorship credit display and related to the sponsorship credit display, in association with an estimation period where at least one predetermined period before or after an appearance time of the related phrase is estimated as the sponsorship credit display segment;
• a voice recognizer configured to recognize voice on an audio signal of the broadcast program;
• a related phrase detector configured to detect a related phrase stored in the related phrase store from results of the voice recognition by the voice recognizer;
• a sponsorship credit display segment estimator configured to, using an appearance time of the related phrase detected by the related phrase detector as a start point, estimate a period corresponding to the estimation period stored in the related phrase store in association with the detected related phrase as the sponsorship credit display segment;
• and
• a detector configured to, among sponsorship credit display segments estimated by the sponsorship credit display segment estimator, detect a segment that continues for at least a predetermined time period as the sponsorship credit display segment.