Speech recognition apparatus, speech recognition method, and television set

A television set comprising:

• a tuner which receives a broadcast;
• a display unit configured to display a broadcast image related to the broadcast received by the tuner;
• and
• a processor which assists a user to select one of selectable information items when the display unit displays the selectable information items in each of which reference information for referencing related information is embedded,
• wherein the processor includes:
• a speech acquisition unit configured to acquire speech uttered by the user;
• a recognition result acquisition unit configured to acquire a result of recognition performed on the speech acquired by the speech acquisition unit;
• an extraction unit configured, when the recognition result includes a keyword and a selection command that is used for selecting one of the selectable information items, to extract at least one selection candidate that includes the keyword, from the selectable information items;
• a selection mode switching unit configured to switch a selection mode from a first selection mode to a second selection mode when the at least one selection candidate extracted by the extraction unit comprises a plurality of selection candidates, the selection mode causing one of the selectable information items to be selected, the first selection mode allowing a selection to be made from among the selectable information items, and the second selection mode allowing the selection to be made from among the selection candidates;
• a display control unit configured to change a display manner in which the display information is displayed, according to the second selection mode switched from the first selection mode by the selection mode switching unit;
• and
• a selection unit configured to select one of the selection candidates, according to an entry made by the user after the display control unit changes the display manner in which the display information is displayed.

A speech recognition method used by a speech recognition apparatus which assists a user to select one of selectable information items when display information including the selectable information items is being outputted, the speech recognition method comprising:

• acquiring speech uttered by the user;
• acquiring a result of recognition performed on the speech acquired in the acquiring of speech;
• extracting, when the recognition result includes a keyword and a selection command that is used for selecting one of the selectable information items, at least one selection candidate that includes the keyword, from the selectable information items;
• switching a selection mode from a first selection mode to a second selection mode when the at least one selection candidate extracted in the extracting comprises a plurality of selection candidates, the selection mode causing one of the selectable information items to be selected, the first selection mode allowing a selection to be made from among the selectable information items, and the second selection mode allowing the selection to be made from among the selection candidates;
• changing a display manner in which the display information is displayed, according to the second selection mode switched from the first selection mode in the switching;
• and
• selecting one of the selection candidates, according to an entry made by the user after the display manner in which the display information is displayed is changed in the changing.