Patent ID: 8521229

Claim:
A cellular telephone apparatus in which a first apparatus constituting a part of the cellular telephone apparatus is provided to be separable from a second apparatus constituting an apparatus body, and each of the first apparatus and the second apparatus is provided with a battery section, comprising: a battery remaining amount detecting section that detects a battery remaining amount of each of the first apparatus and the second apparatus; a battery remaining amount notifying section that notifies the first apparatus of the battery remaining amount of the second apparatus detected in the battery remaining amount detecting section, and that notifies the second apparatus of the battery remaining amount of the first apparatus detected in the battery remaining amount detecting section; a table holding section that holds an operation table that defines operations of devices that the first apparatus and the second apparatus have corresponding to the battery remaining amount of each of the first apparatus and the second apparatus; a control section that determines the operations of devices that the first apparatus has based on the battery remaining amount of the second apparatus and the operations of devices that the second apparatus has based on the battery remaining amount of the first apparatus notified in the battery remaining amount notifying section and descriptions of the operation table held in the table holding section; and a display section that displays the battery remaining amount of each of the first apparatus and the second apparatus as a device of each of the first apparatus and the second apparatus, respectively, wherein the table holding section holds as the operation table a display operation table that defines display contents in the display section corresponding to the battery remaining amount of each of the first apparatus and the second apparatus, and when the battery remaining amount detecting section detects a change in the battery remaining amount of at least one of the first apparatus and the second apparatus, the control section determines the battery remaining amount of each of the first apparatus and the second apparatus to be displayed in the display section corresponding to the battery remaining amount of each of the first apparatus and the second apparatus detected in the battery remaining amount detecting section, the battery remaining amount of each of the first apparatus and the second apparatus notified in the battery remaining amount notifying section, and descriptions of the display operation table.