Data transmission apparatus and method, data receiving...

Details Data transmission apparatus and method, data receiving... Data transmission apparatus and method, data receiving...

2004-07-27

2009-06-16

Yao, Kwang B (Department: 2416)

Multiplex communications

Channel assignment techniques

Details of circuit or interface for connecting user to the...

C725S026000, C725S030000

Reexamination Certificate

active

07548555

ABSTRACT:
The protection of data against illicit transfer with respect to specific data can be ensured. An integrated receiver decoder determines whether or not ATRAC (Adaptive Transform Acoustic Coding) data requiring authentication is contained in selected piece-of-music data in accordance with determination data added into transmitted data. When ATRAC data requiring authentication is contained, the integrated receiver decoder performs an authentication process between it and a storage which is a transfer destination of the ATRAC data, and performs downloading of the ATRAC data after confirming that the storage is a valid apparatus to which the downloading may be performed.

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