Communication terminal, portable terminal, circulating server, providing server, electronic book distributing method, and electronic book distributing program
US7403924B2 · kind B2 · utility
Assignees
Inventors
Key dates
| Filing date | May 20, 2003 |
| Grant date | Jul 22, 2008 |
| Priority date | — |
| Expiry date | May 20, 2024 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG06F2221/2153
- WIPO fieldIT methods for management
- WIPO sectorElectrical engineering
Abstract
A portable terminal 20 according to the present invention is provided with an electronic book coupon storage 22, a book data receiver 24, an electronic book coupon deductor 25, and a book data decryptor 26. The electronic book coupon storage 22 stores 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 receiver 24 receives the book data from an electronic book providing server 30. The electronic book coupon deductor 25 deducts an electronic worth equivalent to a price according to page data requested to be readout, from the electronic book coupon. The book data decryptor 26 decrypts 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.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.