Title:
データ再生装置およびデータ再生モジュール
Document Type and Number:
Japanese Patent JP4010482
Kind Code:
B2
Abstract:
A cellular phone (100) has distributed encrypted content data and an encrypted content key stored in a memory (110). The encrypted content key data read out from the memory (110) is decrypted by a decryption processing unit (1530) using key data Kp stored in a Kp hold unit (1540), and then applied to a audio reproduction module (1500). A decryption processing unit (1520) decrypts encrypted content data read out from the memory (110) using a content key Kc extracted by the decryption processing unit (1530) to reproduce content data Dc.
Inventors:
Masayuki Hatanaka
Kamata Jun
Takuhisa Hatakeyama
Takayuki Hasebe
Seigo Kotani
Shigeki Furuta
Takeaki Anazawa
Toshiaki Hioki
Miwa Kanamori
Yoshihiro Hori
Kamata Jun
Takuhisa Hatakeyama
Takayuki Hasebe
Seigo Kotani
Shigeki Furuta
Takeaki Anazawa
Toshiaki Hioki
Miwa Kanamori
Yoshihiro Hori
Application Number:
JP2001520399A
Publication Date:
November 21, 2007
Filing Date:
August 29, 2000
Export Citation:
Assignee:
富士通株式会社
コロムビアミュージックエンタテインメント株式会社
三洋電機株式会社
コロムビアミュージックエンタテインメント株式会社
三洋電機株式会社
International Classes:
G10K15/02; G06F15/00; G06F21/00; G06F21/31; G06F21/44; G06K19/073; G10L19/00; H04H1/00; H04L9/08; H04L9/10; H04L29/06; H04M3/42; H04M3/493; H04M11/08; H04W12/02; H04M1/60; H04M1/724
Domestic Patent References:
| JP10106148A | ||||
| JP9326166A | ||||
| JP5257816A | ||||
| JP8186667A | ||||
| JP8069419A | ||||
| JP11328033A | ||||
| JP62053042A |
Attorney, Agent or Firm:
Kuro Fukami
Toshio Morita
Hidehiko Ito
Yutaka Horii
Toshio Morita
Hidehiko Ito
Yutaka Horii