Summary content generation device and computer program

Abstract

When generating animation content as summary content for a digital broadcast program, the timing for switching of animation images for display is controlled appropriately. Subtitle character string extraction means for extracting a subtitle character string from subtitle data contained in digital broadcast signals, still image extraction means for extracting one still image corresponding to the subtitle character string, and summary content generation means for generating summary content to display the extracted subtitle character strings together with the corresponding extracted still images, are provided; the summary content generation means decides the timing for switching display of the plurality of subtitle character strings and still images comprised by the summary content, based on the subtitle character strings.

Description

BACKGROUND OF THE INVENTION[0001]1. Field of the Invention[0002]This invention relates to a summary content generation device and to a computer program, which generate summary content for broadcast programs in digital terrestrial broadcasting and other digital broadcasting.[0003]Priority is claimed on Japanese Patent Application No. 2007-241371, filed Sep. 18, 2007, the content of which is incorporated herein by reference.[0004]2. Description of the Related Art[0005]In digital terrestrial broadcast services, subtitle information (closed-caption information) is delivered simultaneously in addition to video data. Subtitles are information used to superpose program dialogue, spoken lines, and similar onto the television images, so that, for example, even persons who are hard of hearing can enjoy broadcasts. While reproducing video data and audio data among the received digital terrestrial broadcast data, a digital terrestrial broadcast reception terminal, upon receiving subtitle data i...

AI Technical Summary

Benefits of technology

[0039]According to this invention, the timing for switching of display of a plurality of subtitle character strings and still images comprised by summary content is decided based on the subtitle character strings. For example, the timing for display switching is decided according to the number of characters in the subtitle character string, the difficulty of words in the subtitle character string, and similar. By this means, there is the advantageous result that, when generating animation content as summary content of a digital broadcast program, the timing for switching the animation images for display can be controlled appropriately.

Problems solved by technology

However, it is thought that, due to available time constraints, many viewers view only a portion of broadcast programs among the broadcast programs accumulated in a storage area.

When checking only a synopsis, for example, there is a method in which while fast-forwarding during reproduction, only scenes which the viewer wishes to view are reproduced normally; however, this method requires that the viewer view the fast-forwarded television images and perform operations while watching closely, requires time, and is troublesome.

However, in the technology of the prior art disclosed in Patent Reference 1 above, images extracted from video are merely displayed as thumbnails in a list, and as the number of images increases, the convenience of use as a list is greatly worsened.

In particular, when using portable telephone sets, which are presently in wide use, the screen size is small in order to enhance portability, and so it is difficult to view a list of thumbnails with satisfactory perceptibility.

Hence in order to reduce the size of the summary content data, images are converted into binary values and converted into line drawings to reduce the size of the image data itself; but as indicated by image b shown in FIG. 5 of Patent Reference 2, it is difficult to reliably ascertain the content of video from a line drawing.

Hence when reproducing animation images, it is thought that a viewer will perform manual operations to switch and display one image at a time in sequence, but such operations are troublesome.

Thus among methods of generating summary content for digital terrestrial broadcast programs, there is the problem of controlling the timing of switching of animation images for display, such that a viewer can understand subtitle character strings and images when generating animation content in which still images extracted from video data is also displayed, together with switching and display in order of subtitle character strings of the subtitle data.