The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jul. 22, 2008
Filed:
May. 20, 2003
Ken Sakamura, Shinagawa-ku, Tokyo 141-0032, JP;
Noboru Koshizuka, Musashino-shi, Tokyo 180-0013, JP;
Hiroshi Aono, Yokosuka, JP;
Kazuhiko Ishii, Yokohama, JP;
Kensaku Mori, Yokohama, JP;
Sadayuki Hongo, Yokohama, JP;
Ken Sakamura, Shinagawa-ku, Tokyo 141-0032, JP;
Noboru Koshizuka, Musashino-shi, Tokyo 180-0013, JP;
Hiroshi Aono, Yokosuka, JP;
Kazuhiko Ishii, Yokohama, JP;
Kensaku Mori, Yokohama, JP;
Sadayuki Hongo, Yokohama, JP;
NTT DoCoMo, Inc., Tokyo, JP;
Other;
Abstract
A portable terminalaccording to the present invention is provided with an electronic book coupon storage, a book data receiver, an electronic book coupon deductor, and a book data decryptor. The electronic book coupon storagestores an electronic book coupon used in acquisition of book data containing a plurality of page data units, along with a decryption key used in decryption of the plurality of page data units. The book data receiverreceives the book data from an electronic book providing server. The electronic book coupon deductordeducts an electronic worth equivalent to a price according to page data requested to be readout, from the electronic book coupon. The book data decryptordecrypts the page data in steps of one page data unit by use of the decryption key in conjunction with the deduction of the electronic worth.