Patent ID: 7545398

Claim:
A display device driven with a remaining battery level, for switchingly displaying each page of contents to be displayed on a storage-type display unit capable of holding contents which have been displayed thereon even if a power supply thereto is stopped, the display device comprising: a remaining battery level detection section for detecting a remaining battery level; and a notification section for notifying a correspondence relation between the detected remaining battery level and a number of displayable pages of the contents, wherein the notification section calculates power consumption required for switchingly displaying remaining pages of contents displayed on the storage-type display unit and makes the notification based only on the caculated power consumption required for switchingly displaying the remaining pages of content and the remaining battery level detected by the remaining battery level detection section by: sequentially generating raster data of contents of the page next to the contents displayed on the display device, causing the raster data to be sequentially stored, and referring to a data table in which values of power consumption for one page are set according to temperatures of a cholesteric liquid crystal panel and driving method.