Abstract: The present invention has an object to improve usability of a vehicle-mounted electronic device. The vehicle-mounted electronic device is configured to execute, when unauthorized content is detected by an unauthorized content detecting unit, an audio reproduction restriction on a display device, and when a volume change operation is executed during the audio reproduction restriction, to cause the display device to display a message indicating that the volume change operation has been executed during the audio reproduction restriction. More specifically, the displayed message indicates that the audio reproduction restriction associated with the unauthorized content reproduction is executed and the volume change operation is also executed during the execution. Therefore, the volume can be changed when next content is reproduced, resulting in preventing unexpected high-volume audio from being outputted and thus improving usability.

Abstract: The present invention has an object to improve usability of a vehicle-mounted electronic device. The vehicle-mounted electronic device is configured to execute, when unauthorized content is detected by an unauthorized content detecting unit, an audio reproduction restriction on a display device, and when a volume change operation is executed during the audio reproduction restriction, to cause the display device to display a message indicating that the volume change operation has been executed during the audio reproduction restriction. More specifically, the displayed message indicates that the audio reproduction restriction associated with the unauthorized content reproduction is executed and the volume change operation is also executed during the execution. Therefore, the volume can be changed when next content is reproduced, resulting in preventing unexpected high-volume audio from being outputted and thus improving usability.

Abstract: A reproducing apparatus includes a signal processing unit that controls output of image and sound of a title based on data recorded on a BD-ROM inserted into the reproducing apparatus. The signal processing unit holds first screen information concerning a mask screen that masks a title reproduction screen, and second screen information concerning a replacement demand screen that prompts replacement of the housed BD-ROM, outputs the mask screen based on the first screen information instead of the image of the title while the vehicle is running the title is being reproduced, and outputs the replacement demand screen based on the second screen information when the sound of the title is in a silent state continuously for a predetermined time or more while the vehicle is running and the title is being reproduced.

Abstract: A reproducing apparatus includes a signal processing unit that performs background playback of a title based on data recorded on a BD after an operation mode is changed from a reproduction mode of the BD to a different mode. The signal processing unit holds screen information concerning a mask screen that masks a reproduction screen of the title, and screen information concerning a replacement demand screen that prompts replacement of the housed BD, outputs the mask screen when the operation mode is returned to the reproduction mode in a case where a playback position of the BD does not reach an end during the background playback, and outputs the replacement demand screen when the operation mode is returned to the reproduction mode in a case where the playback position reaches the end during the background playback.