公开(公告)号：US06204774B1

公开(公告)日：2001-03-20

申请号：US09034028

申请日：1998-03-02

Applicant: Kenji Miwa ,  Kosei Kawamoto ,  Yasumasa Matsumoto ,  Kousou Hayashi ,  Kazuhiro Kishimoto ,  Katsuhiro Tochihara

Inventor： Kenji Miwa ,  Kosei Kawamoto ,  Yasumasa Matsumoto ,  Kousou Hayashi ,  Kazuhiro Kishimoto ,  Katsuhiro Tochihara

IPC: G07D700

CPC classification number: H04H20/34 ,  G06Q20/1235 ,  G07F17/0014 ,  H04H60/15 ,  H04H2201/70

Abstract: A system provides service information through a restricted broadcasting using an FM teletext multiplex broadcasting. When providing a reception authorization code that enables each receiver terminal to receive the service information, terminal unique information such as a production number is stored in a user file at the provider's end, such as an FM broadcast station. Further, a processing circuit encodes reception authorization information showing an expiration date of a reception authorization period or contract contents after appending an error detection sign using the terminal unique information, which is notified to the user via mail of the like. Upon input of the notified reception authorization code through an input device, a processing circuit at the receiver terminal's end decodes the reception authorization code using the terminal unique information stored in its memory and corrects an error. Then the processing circuit makes the restricted broadcasting available only when the decoded reception authorization information shows reception authorization and no error is detected therein, so that the decoded teletext information is displayed on a display service.

Abstract translation: 系统通过使用FM图文多重广播的有限广播来提供服务信息。 当提供使每个接收机终端能够接收服务信息的接收授权码时，终端唯一信息（诸如生产号码）被存储在诸如FM广播站之类的提供者端的用户文件中。 此外，处理电路使用通过邮件等通知给用户的终端唯一信息附加了错误检测符号之后，对接收授权期间的合同内容的接收授权信息进行编码。 在通过输入装置输入通知的接收授权码之后，接收终端的处理电路使用存储在其存储器中的终端唯一信息对接收授权码进行解码，并校正错误。 然后，处理电路仅在解码的接收授权信息显示接收授权并且没有检测到错误的情况下才使得受限广播可用，从而在显示服务上显示解码的图文电视信息。