US Patent 7545398 Display device

Patent 7545398 was granted and assigned to Seiko Epson on June, 2009 by the United States Patent and Trademark Office.

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Is a

Patent

Patent attributes

Current Assignee

Seiko Epson

Patent Jurisdiction

United States Patent and Trademark Office

Patent Number

75453980

Patent Inventor Names

Munenori Sawada0

Date of Patent

June 9, 2009

Patent Application Number

109856430

Date Filed

November 11, 2004

Patent Primary Examiner

‌

Sumati Lefkowitz

Patent abstract

There is provided a battery-driven electronic book reader for switchingly displaying each page of contents separated in predetermined pages on a cholesteric liquid crystal panel, wherein a remaining available battery level is detected (step S102), the number of pages to be switchedly displayed on the cholesteric liquid crystal panel is calculated based on the detected remaining available battery level (step S104), and the calculated number of pages is displayed on the cholesteric liquid crystal panel (step 105).