Abstract: A digital broadcast receiver includes an operation mode manager that switches an operation mode to a first mode in which a function is implemented by the downloaded application or a second mode in which a function is implemented by the pre-installed application, and a key delivery module that delivers the key code received from the remote control to the downloaded application or the pre-installed application. When the receiver is in the first mode, the key delivery module delivers the received key code to the downloaded application if the received key code is a key code for the first mode, and delivers the received key code to the pre-installed application if the received key code is a key code for the second mode. When the receiver is in the second mode, the key delivery module delivers the received key code to the pre-installed application.

Abstract: A digital broadcast receiver includes an operation mode manager that switches an operation mode to a first mode in which a function is implemented by the downloaded application or a second mode in which a function is implemented by the pre-installed application, and a key delivery module that delivers the key code received from the remote control to the downloaded application or the pre-installed application. When the receiver is in the first mode, the key delivery module delivers the received key code to the downloaded application if the received key code is a key code for the first mode, and delivers the received key code to the pre-installed application if the received key code is a key code for the second mode. When the receiver is in the second mode, the key delivery module delivers the received key code to the pre-installed application.

Abstract: A hand gesture recognizing device is provided which can correctly recognize hand gestures at high speed without requiring users to be equipped with tools. A gesture of a user is stereoscopically filmed by a photographing device 1 and then stored in an image storage device 2. A feature image extracting device 3 transforms colors of the stereoscopic image data read from the image storage device 2 in accordance with color transformation tables created by a color transformation table creating device 13, and disassembles and outputs the feature image of the user in corresponding channels. A spatial position calculating device 4 calculates spatial positions of feature parts of the user by utilizing parallax of the feature image outputted from the feature image extracting device 4. A region dividing device 5 defines the space around the user with spatial region codes. A hand gesture detecting device 6 detects how the hands of the user move in relation to the spatial region codes.