INFORMATION TRANSMISSION SYSTEM AND METHOD, TRANSMITTER AND RECEIVER, DATA PROCESSING DEVICE AND DATA PROCESSING METHOD, AND RECORDED MEDIUM

WIPO Patent Application WO/2001/033771

A1

When data is transmitted to a receiver piece by piece, the address specifically allocated to the receiver is added to the data and transmitted together. When common data is transmitted to an arbitrary group of receivers, a set of common address information representing the common part of addresses of the receivers and a set of address range information specifying the range of the common part of the addresses are added to the data and transmitted together. When the transmitted data is received, the specific address is compared with the address added to the data. If the specific address agrees with the address added to the data, or if the specific address partially agrees with the common address information to which the data is added in the range indicated by the address range information, the data is decoded.

AKACHI MASATERU (JP)

PCT/JP2000/007682

May 10, 2001

November 01, 2000

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SONY CORP (JP)
AKACHI MASATERU (JP)

H04H40/90; H04L12/18; (IPC1-7): H04L12/18; H04L9/36; H04L9/32; H04H1/00; H04N7/16

JPH10215244A	1998-08-11
JPH10210066A	1998-08-07
EP0784392A2	1997-07-16
JP2000312225A	2000-11-07

JEFFERY MOGUL: "RFC919 (Broadcasting internet datagrams)", October 1984 (1984-10-01), pages 01 - 08, XP002939773
TOMOYUKI ASANO ET AL.: "PRISM prototype ni okeru conditional access system", SONY RESEARCH FORUM 1996 RONBUNSHUU, 1 February 1997 (1997-02-01), pages 300 - 304, XP002935139
See also references of EP 1143659A4

Tanabe, Shigemoto (Jingumae 1-chome Shibuya-ku Tokyo, JP)

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