公开(公告)号：US06920222B1

公开(公告)日：2005-07-19

申请号：US09641512

申请日：2000-08-18

申请人： Daisuke Tsukahara ,  Yasutaka Akita ,  Susumu Oka ,  Tokumichi Murakami ,  Yukinari Matsuda

发明人： Daisuke Tsukahara ,  Yasutaka Akita ,  Susumu Oka ,  Tokumichi Murakami ,  Yukinari Matsuda

IPC分类号： H04N7/16 ,  H04N21/266 ,  H04N21/462 ,  H04N21/4623 ,  H04N7/167

CPC分类号： H04N21/26606 ,  H04N7/163 ,  H04N7/1675 ,  H04N21/44055 ,  H04N21/4623

摘要： A conditional access system includes an EMM (Entitlement Management Message) analyzer for retrieving partial viewing authorization information. When the partial viewing authorization information permits partial viewing, ECM (Entitlement Control Message) is decrypted using work keys, and scrambling keys are intermittently retrieved from the ECM. This can solve a problem of a conventional conditional access system in that an unauthorized user's receiver cannot display pictures at all because the receiver cannot retrieve scrambling keys, and hence the user cannot enjoy a program even to such a degree as to perceive its feeling as in analog broadcasting systems, and thus the user cannot decide as to whether to make contract or not with viewing the program to some extent, which prevents the provider of the program from offering effective invitation to the user.

摘要翻译： 条件访问系统包括用于检索部分查看授权信息的EMM（授权管理消息）分析器。 当部分观看授权信息允许部分观看时，使用工作密钥来解密ECM（授权控制消息），并且从ECM间歇地检索加扰密钥。 这可以解决传统的条件访问系统的问题，因为未经授权的用户的接收机根本无法显示图像，因为接收机不能检索加扰密钥，因此用户甚至不能享受程序，以便感觉到其感觉如 模拟广播系统，因此用户不能在一定程度上决定是否通过观看节目进行合同，这阻止了节目的提供者向用户提供有效的邀请。

公开(公告)号：US07447218B2

公开(公告)日：2008-11-04

申请号：US10545809

申请日：2004-02-19

申请人： Yukinari Matsuda ,  Susumu Oka ,  Yukiyasu Kawahata ,  Hiroshi Honma ,  Morio Yoshimoto

发明人： Yukinari Matsuda ,  Susumu Oka ,  Yukiyasu Kawahata ,  Hiroshi Honma ,  Morio Yoshimoto

IPC分类号： H04L12/28 ,  H04J3/16

CPC分类号： H04N7/147

摘要： Communication is performed without paying attention to the fact that the communication is executed between multimedia terminals having communication procedures differing from each other.A terminal 2 starts a communication procedure that is necessary to establish a communication path to a communication service unit 1, in order to execute communication with a multimedia terminal 3; when a communication protocol conversion unit 7 receives communication start request from the terminal 2, the communication service unit executes identification process of a calling terminal based on the identification number, which exists in communication start request, for determining the multimedia terminal 2, and inquires a terminal information managing unit 9 of the calling terminal. The terminal information managing unit 9 retrieves terminal information related to the calling terminal based on a terminal information request, and informs of the retrieved terminal information to the communication protocol conversion unit 7. The communication protocol conversion unit 7 informs of the communication start request to the terminal 3 when the transmitting the terminal information of the terminal 2 is obtained, and continues a relay process in communication procedure, which is necessary for following establishment of a communication path.

摘要翻译： 执行通信，而不用注意在具有彼此不同的通信过程的多媒体终端之间执行通信的事实。 终端2开始建立到通信服务单元1的通信路径所需的通信过程，以便执行与多媒体终端3的通信; 当通信协议转换单元7从终端2接收到通信开始请求时，通信服务单元基于存在于通信开始请求中的识别号码执行主叫终端的识别处理，以确定多媒体终端2，并且向 主叫终端的终端信息管理部9。 终端信息管理单元9基于终端信息请求检索与主叫终端相关的终端信息，并将所检索到的终端信息通知给通信协议转换单元7。 当发送终端2的终端信息时，通信协议转换单元7向终端3通知通信开始请求，并且继续通信过程中的中继处理，这对于跟随建立通信路径是必需的。

公开(公告)号：US20060193345A1

公开(公告)日：2006-08-31

申请号：US10545809

申请日：2004-02-19

申请人： Yukinari Matsuda ,  Susumu Oka ,  Yukiyasu Kawahata ,  Hiroshi Honma ,  Morio Yoshimoto

发明人： Yukinari Matsuda ,  Susumu Oka ,  Yukiyasu Kawahata ,  Hiroshi Honma ,  Morio Yoshimoto

IPC分类号： H04J3/16

CPC分类号： H04N7/147

摘要： Communication is performed without paying attention to the fact that the communication is executed between multimedia terminals having communication procedures differing from each other. A terminal 2 starts a communication procedure that is necessary to establish a communication path to a communication service unit 1, in order to execute communication with a multimedia terminal 3; when a communication protocol conversion unit 7 receives communication start request from the terminal 2, the communication service unit executes identification process of a calling terminal based on the identification number, which exists in communication start request, for determining the multimedia terminal 2, and inquires a terminal information managing unit 9 of the calling terminal. The terminal information managing unit 9 retrieves terminal information related to the calling terminal based on a terminal information request, and informs of the retrieved terminal information to the communication protocol conversion unit 7. The communication protocol conversion unit 7 informs of the communication start request to the terminal 3 when the transmitting the terminal information of the terminal 2 is obtained, and continues a relay process in communication procedure, which is necessary for following establishment of a communication path.

摘要翻译： 执行通信，而不用注意在具有彼此不同的通信过程的多媒体终端之间执行通信的事实。 终端2开始建立到通信服务单元1的通信路径所需的通信过程，以便执行与多媒体终端3的通信; 当通信协议转换单元7从终端2接收到通信开始请求时，通信服务单元基于存在于通信开始请求中的识别号码执行主叫终端的识别处理，以确定多媒体终端2，并且向 主叫终端的终端信息管理部9。 终端信息管理单元9基于终端信息请求检索与主叫终端相关的终端信息，并将所检索到的终端信息通知给通信协议转换单元7。 当发送终端2的终端信息时，通信协议转换单元7向终端3通知通信开始请求，并且继续通信过程中的中继处理，这对于跟随建立通信路径是必需的。

公开(公告)号：US07630411B2

公开(公告)日：2009-12-08

申请号：US10467342

申请日：2001-07-31

申请人： Masayuki Baba ,  Yoshiaki Kato ,  Yukinari Matsuda

发明人： Masayuki Baba ,  Yoshiaki Kato ,  Yukinari Matsuda

IPC分类号： H04J3/04

CPC分类号： H04N7/52 ,  H04J3/247 ,  H04L1/00 ,  H04L7/04 ,  H04N21/236 ,  H04N21/434

摘要： First and second input data sequences are packetized to produce packets having fixed first and second lengths, respectively. A flag and headers are attached to the packets for transmission. In a demultiplexing apparatus, when the header cannot be properly identified, subsequent demultiplexing steps are performed by estimating that the subsequent data is the first input data sequence, when the first length occurs before the next flag, and estimating that the subsequent data is the second input data sequence, when the second length occurs. When the flag cannot be properly identified, the flag is expected at the first length from the previous header when the previous header indicates the first input data sequence, and the flag is expected at the second length when the previous header indicates the second input data sequence.

摘要翻译： 分组化第一和第二输入数据序列以分别产生具有固定的第一和第二长度的分组。 一个标志和标题附加到数据包进行传输。 在解复用装置中，当标题无法正确识别时，通过估计随后的数据是第一输入数据序列，当第一长度出现在下一个标志之前，并且估计随后的数据是第二数据时，执行随后的解复用步骤 当第二个长度出现时，输入数据序列。 当标志不能被正确识别时，当前一个标题指示第一个输入数据序列时，该标志将被从前一个报头的第一个长度预期，并且当前一个报头指示第二个输入数据序列时，该标志被预期为第二个长度 。