PLAYBACK APPARATUS, SEARCHING METHOD, AND PROGRAM

1 . A playback apparatus comprising:

playback means for playing back a content to display images;

extraction means for extracting keywords from subtitles tied to an image being displayed;

keyword presentation means for presenting the keywords extracted by the extraction means; and

searching means for searching a content on the basis of a keyword selected from the keywords presented by the keyword presentation means.

2 . The playback apparatus according to claim 1 ,

wherein when a user gives an instruction, the extraction means extracts a keyword from subtitles tied to an image being displayed.

3 . The playback apparatus according to claim 1 , further comprising cutting means for cutting a content for each scene,

wherein the searching means searches for a scene including an image to which subtitles including a keyword selected from the keywords presented by the keyword presentation means are tied from the scenes cut by the cutting means.

4 . The playback apparatus according to claim 1 ,

wherein the searching means searches for a program including a keyword selected from the keywords presented by the keyword presentation means in program information.

5 . The playback apparatus according to claim 1 , further comprising content presenting means for presenting information on a content searched by the searching means,

wherein the playback means plays back a content selected from the contents whose information has been presented by the content presenting means.

6 . A method of searching, comprising the steps of:

playing back a content to display images;

extracting keywords from subtitles tied to an image being displayed;

presenting the extracted keywords; and

searching a content on the basis of a keyword selected from the presented keywords.

7 . A program for causing a computer to perform processing, the processing comprising the steps of:

playing back a content to display images;

extracting keywords from subtitles tied to an image being displayed;

presenting the extracted keywords; and

searching a content on the basis of a keyword selected from the presented keywords.

8 . A playback apparatus comprising:

a playback mechanism for playing back a content to display images;

an extraction mechanism for extracting keywords from subtitles tied to an image being displayed;

a keyword presentation mechanism for presenting the keywords extracted by the extraction mechanism; and

a searching mechanism for searching a content on the basis of a keyword selected from the keywords presented by the keyword presentation mechanism.