专利检索 ap:("Panasonic Corporation") AND inv:"Ohmori, Motoji" 第 1 页

1.

发明授权
Secret key transfer method which is highly secure and can restrict the damage caused when the secret key is leaked or decoded 失效
标题翻译：用于与损伤变得已知的限制私人密钥传送或解码秘密密钥的高安全的方法

公开(公告)号：EP0840477B1

公开(公告)日：2012-07-18

申请号：EP97308520.2

申请日：1997-10-24

申请人： Panasonic Corporation , Kabushiki Kaisha Toshiba

发明人： Tatebayashi, Makoto , Ohmori, Motoji , Kato, Takehisa , Endoh, Naoki , Hirayama, Koichi

IPC分类号： H04L9/08 , H04N7/167 , H04L9/32

CPC分类号： H04N21/63345 , H04L9/0838 , H04L9/0891 , H04N7/1675

2.

发明公开
Distribution system, distribution apparatus and reception apparatus for distributing digital contents having usage expiry 审中-公开
标题翻译：分配系统，分配设备，和用于分配数字内容到最终用户接收设备

公开(公告)号：EP1361495A3

公开(公告)日：2009-06-03

申请号：EP03010408.7

申请日：2003-05-08

申请人： Panasonic Corporation

发明人： Futa, Yuichi , Ohmori, Motoji , Tatebayashi, Makoto , Yamamoto, Masaya

IPC分类号： G06F1/00

CPC分类号： G06F21/10 , G06F2221/2137

摘要： A reception apparatus includes a first timer and sends to a distribution apparatus a first date-time clocked by the first timer. The distributing apparatus includes a second timer, and generates expiry information based on a difference obtained by subtracting, from the first date-time, a second date-time that is clocked by the second timer. The expiry information is used to adjust a usage expiry date-time of a content. The reception apparatus judges whether playback of the content is permitted based on the first timer and the expiry information.
With this arrangement, unauthorized use of the content beyond the expiry date-time is prevented.

3.

发明公开
A numerical array output device, a numerical array output method, an encryption device, and a decryption device 审中-公开
标题翻译：装置：用于数值阵列输出，加密装置和解密装置的数值阵列输出方法

公开(公告)号：EP2148463A2

公开(公告)日：2010-01-27

申请号：EP09174508.3

申请日：2002-10-15

申请人： Panasonic Corporation

发明人： Futa, Yuichi , Ohmori, Motoji , Yokota, Kaoru , Tatebayashi, Makoto

IPC分类号： H04L9/30

CPC分类号： H04L9/3093

摘要： A numerical array output unit 100 is composed of an initial array decision unit 110 that tentatively decides an initial decision array V1 having n1 piece of 1, n2 piece of -1 and (n-n2-n2) piece of 0 as its array element, and an array element replacement unit 120 that changes the array element of the initial decision array V1 decided by the initial array decision unit 110 based on an input integer X and that outputs the array V.

摘要翻译： 数值阵列输出单元100是由一个初始阵列决策单元110做暂时决定初始具有N1一块1，N 2片的-1和（n-N2-N 2）片的0作为其数组元素决定阵列V1的，和数组元素替换单元120度的变化做了由初始阵列决定单元110所决定的初始决定阵列V1的数组基于整数X的输入端与所述阵列V.那样输出