发明名称 |
METHOD OF TRANSMITTING INFORMATION DATA FROM A SENDER TO A RECEIVER VIA A TRANSCODER, METHOD OF TRANSCODING INFORMATION DATA, METHOD FORRECEIVING TRANSCODED INFORMATION DATA, SENDER, TRANSCODER AND RECEIVER |
摘要 |
A method of transmitting information data from a sender to a receiver via a transcoder is proposed. The information data comprises confidential information data which is encrypted and non-confidential information data. Security information and transcoding-type information is sent together with the partly encrypted information data to the transcoder which uses the security information and transcoding-type information during a transcoding step. The encrypted confidential information data is thereby transcoded without using its content while the non-confidential information data is transcoded, having access to its content.
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申请公布号 |
CA2337035(A1) |
申请公布日期 |
2000.01.20 |
申请号 |
CA19982337035 |
申请日期 |
1998.11.23 |
申请人 |
INTERNATIONAL BUSINESS MACHINES CORPORATION |
发明人 |
HILD, STEFAN G.;O'CONNOR, LUKE J. |
分类号 |
G09C1/00;H04L9/14;H04L9/32;H04L29/06;H04L29/08;(IPC1-7):H04L29/06 |
主分类号 |
G09C1/00 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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