| Original document(41 pages) 中文版 |
A service information receiving apparatus (1) for receiving scrambled charged service information transmitted as being multiplexed on an FM broadcast radio wave from an FM broadcasting station (3) causes a control section (43) to perform a predetermined arithmetic operation by using a variable key as one of descramble keys affixed to the scrambled charged service information received by a service information receiving section (40) and a half-fixed key as one of descramble keys, which is stored in an IC card (2) detachably attached to a receiving apparatus main body, thereby preparing a new descramble key, which is used to descramble the received charged service information. |
Application Number
申请号 |
96191232 |
Application Date
申请日 |
1996.10.17 |
| Title 名称 |
Scrambled information transmitting and receiving method |
Publication Number
公开号 |
1166899 |
Publication Date
公开日 |
1997.12.03 |
| Approval Pub. Date |
|
Granted Pub. Date |
|
| International Classification 分类号 |
H04B1/16;H04H1/00;H04K1/00;H04L9/10 |
Applicant(s) Name
申请人 |
Casio Computer Co., Ltd. |
| Address 地址 |
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| Inventor(s) Name 发明人 |
Kaku Yasuichi;Kizaki Masaharu;Kanke Takao |
| Attorney & Agent 代理人 |
JIAN WEI |
| More information 更 多 信 息 |
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