Trade indication data transmission method and system, and reception apparatus
Number of patents in Portfolio can not be more than 2000
United States of America Patent
Stats
-
N/A
Issued Date -
Nov 4, 2004
app pub date -
May 27, 2004
filing date -
Jul 31, 2002
priority date (Note) -
Abandoned
status (Latency Note)
Importance
Abstract
Trade indication data in which a characteristic to identify a receiver is inserted is transmitted. By this, when the transmitted trade indication data is falsely used, the origin of the trade indication data can be identified, and therefore, the trade indication can be appropriately protected. Here, the characteristic may be modified for each lot, or the characteristic may be inserted in a pattern of the trade indication and can be recognized from the appearance of the trade indication. The characteristic may be an electronic watermark, or may include information related to a limitation on the number of copying.
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