Picture display device, and setting modification method and setting modification program therefor

A picture display device capable of displaying picture content, the picture display device comprising:

• an audio input unit configured to obtain a voice uttered by an operator who is a person;
• an imaged picture input unit configured to obtain an image picture of the operator;
• a storage configured to store settings information related to a settings change applied to the picture display device and operator information related to an operator instructing the settings change to the picture display device so that the settings information and the operator information are associated with each other;
• an operator identification unit configured to newly acquire information related to an operator operating the picture display device and compare the information related to the operator newly acquired with the operator information stored in the storage to perform an operator identification process;
• a display which is capable of displaying picture content;
• and
• a controller configured to be capable of controlling a plurality of control states including:
• a first control state in which, in a case where as a result of the identification process in the operator identification unit, operator information corresponding to the information related to the operator newly acquired is stored in the storage, the settings change based on the settings information stored in the storage in association with the corresponding operator information is applied to the picture display device, and
• a second control state which enables, in case where no operator information corresponding to the information related to the operator newly acquired is stored in the storage, a storing process for newly storing operator information related to a new operator into the storage without applying the settings change based on the settings information already stored in the storage, the storing process for newly storing the operator information related to the new operator into the storage is performed before a termination process for turning the picture display device off,
• wherein the settings information is settings information related to a layout on a display screen to be displayed on the display, on which a picture content, an icon related to an acquisition source of information acquirable via a network by a network connecting function of the picture display device, and an icon related to an application executable in the picture display device are displayed together,
• wherein the operator identification process is performed by comparing the information related to the operator newly acquired based on the imaged picture obtained by the imaged picture input unit with the operator information stored in the storage,
• wherein the operator identification process is performed after a predetermined keyword, that is to be a trigger of starting the operator identification process, is recognized as being included in the voice obtained by the audio input unit, and
• wherein the display displays an indication indicating who operates the picture display device based on a result of the operator identification process.