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Yoshihiro Hori, Toshiaki Hioki, Miwa Kanamori, Takatoshi Yoshikawa, Hiroshi Takemura, Takayuki Hasebe, Takahisa Hatakeyama, Tadaaki Tonegawa, Takeaki Anazawa: Device for reproducing data. Sanyo Electric, Fujitsu, Westerman Hattori Daniels & Adrian, May 24, 2005: US06898708 (51 worldwide citation)

A cellular phone (100) stores encrypted content data and encrypted license key distributed thereto in a memory card (110). The cellular phone (100) and the memory card (110) collectively perform a part of mutual authentication processing upon power-on. The encrypted license key (Kc) read from the me ...


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Masayuki Hatanaka, Jun Kamada, Takahisa Hatakeyama, Takayuki Hasebe, Seigou Kotani, Shigeki Furuta, Takeaki Anazawa, Tadaaki Tonegawa, Toshiaki Hioki, Miwa Kanamori, Yoshihiro Hori: Memory card. Fujitsu, Nippon Columbia, Hitachi, Sanyo Electric, Westerman Hattori Daniels & Adrian, February 14, 2006: US06999948 (25 worldwide citation)

A memory card 110 extracts a session key Ks from the data applied onto a data bus BS3 by carrying out a decryption process. An encryption processing unit 1406 encrypts a public encryption key KPcard(1) of memory card 110 based on session key Ks, and applies the encrypted key to a server via data bus ...


3
Yoshihiro Hori, Toshiaki Hioki, Miwa Kanamori, Takatoshi Yoshikawa, Hiroshi Takemura, Masataka Takahashi, Takayuki Hasebe, Shigeki Furuta, Takahisa Hatakeyama, Tadaaki Tonegawa, Takeaki Anazawa: Data distribution system and recording device and data provision device used therefor. Sanyo Electric, Fujitsu, Hitachi, Westerman Hattori Daniels & Adrian L, May 15, 2007: US07219227 (24 worldwide citation)

A license server (10) includes a CRL database (306) holding a revocation list recording therein classes predetermined corresponding respectively to a memory device, such as a memory card, and a content reproduction circuit, such as a cellular phone, that are subjected to revocation of distributing, ...


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Yoshihiro Hori, Toshiaki Hioki, Miwa Kanamori, Takatoshi Yoshikawa, Hiroshi Takemura, Masataka Takahashi, Takayuki Hasebe, Shigeki Furuta, Takahisa Hatakeyama, Tadaaki Tonegawa, Takeaki Anazawa: Memory card and data distribution system using it. Sanyo Electric, Fujitsu, Hitachi, Westerman Hattori Daniels & Adrian, March 4, 2008: US07340055 (17 worldwide citation)

A memory card (110) conducts an authentication process with a server based on data stored in an authentication data hold unit (1400). The memory card (110) extracts a first session key (Ks1) from a server by a decryption process and a transaction ID from the data applied on a data bus (BS3). The mem ...


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Masayuki Hatanaka, Jun Kamada, Takahisa Hatakeyama, Takayuki Hasebe, Seigou Kotani, Tadaaki Tonegawa, Takeaki Anazawa, Toshiaki Hioki, Miwa Kanamori, Yoshihiro Hori: Recording device. Fujitsu, Hitachi, Sanyo Electric, Westerman Hattori Daniels & Adrian, June 3, 2008: US07383446 (11 worldwide citation)

A memory card includes a user ID hold unit holding user ID data provided to identify the user of the memory card, a first protection information memory unit holding first protection information restricting access to memory card, and a second protection information memory unit holding second protecti ...


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Masayuki Hatanaka, Jun Kamada, Takahisa Hatakeyama, Takayuki Hasebe, Seigou Kotani, Takeaki Anazawa, Tadaaki Tonegawa, Junji Nakata, Toshiaki Hioki, Miwa Kanamori, Yoshihiro Hori: Data distributing system and recording medium used for it. Fujitsu, Sanyo Electric, Westerman Hattori Daniels & Adrian, November 1, 2011: US08051302 (6 worldwide citation)

Encrypted music data and additional information necessary for accessing a server (30) are copied from a CD-ROM (200) onto a memory card (110). The memory card (110) receives via a digital portable phone network the distribution of a contents decoding key (Kc) necessary for decoding encrypted music d ...


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Yoshihiro Hori, Hiroshi Takemura, Takatoshi Yoshikawa, Toshiaki Hioki, Takahisa Hatakeyama, Takayuki Hasebe, Shigeki Furuta, Masataka Takahashi, Takeaki Anazawa, Tadaaki Tonegawa: Content data storage. Sanyo Electric, Fujitsu, Hitachi, Westerman Hattori Daniels & Adrian, October 6, 2009: US07599890 (3 worldwide citation)

A memory card (110) includes a memory (1415) to store encrypted content data, a license hold unit (1440) to store at least a portion of license information distributed by a distribution system, a plurality of authentication data hold units (1400.1, 1400.2), each storing a plurality of authentication ...


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Yoshihiro Hori, Toshiaki Hioki, Miwa Kanamori, Masataka Takahashi, Takayuki Hasebe, Makoto Yoshioka, Takahisa Hatakeyama, Tadaaki Tonegawa, Takeaki Anazawa: Data distribution system and recording device for use therein. Sanyo Electric, Fujitsu, Renesas Electronics Corporation, Westerman Hattori Daniels & Adrian, May 17, 2011: US07945517 (2 worldwide citation)

A memory card (110) stores access restriction information (AC1) to a license information hold unit (1440) arranged in a TRM area. Access restriction information (AC1) has information for example of a frequency of reproduction allowed and a number of licenses owned. A controller (1420) in reproducing ...


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Yoshihiro Hori, Toshiaki Hioki, Miwa Kanamori, Seigou Kotani, Takayuki Hasebe, Takahisa Hatakeyama, Tadaaki Tonegawa, Takeaki Anazawa: Recorder. Sanyo Electric, Fujitsu, Westerman Hattori Daniels & Adrian, January 2, 2007: US07158641 (2 worldwide citation)

A memory card (110) decodes data delivered to a data bus (BS3) and extracts a session key (Ks1) sent from a server from the data. Based on the session key (Ks1), an encrypting section (1406) encrypts a public encryption key (KPm (1)) of the memory card (110) and delivers it to a server through the d ...


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Masayuki Hatanaka, Jun Kamada, Takahisa Hatakeyama, Takayuki Hasebe, Seigou Kotani, Shigeki Furuta, Takeaki Anazawa, Tadaaki Tonegawa, Toshiaki Hioki, Miwa Kanamori, Toshihiro Hori: Memory card. Fujitsu, Renesas Technology, Sanyo Electric, Westerman Hattori Daniels & Adrian, June 29, 2010: US07747538 (1 worldwide citation)

A memory card 110 extracts a session key Ks from the data applied onto a data bus BS3 by carrying out a decryption process. An encryption processing unit 1406 encrypts a public encryption key KPcard(1) of memory card 110 based on session key Ks, and applies the encrypted key to a server via data bus ...