Data transmission apparatus and method, data receiving apparatus and method, and data transmission and reception system and method
First Claim
1. A method of signal processing, comprising:
- receiving a multiplexed signal;
selecting a program from the received multiplexed signal;
obtaining a program map table associated with the program;
obtaining packet identification information of image data associated with the program;
obtaining packet identification information of audio data associated with the program;
obtaining packet identification information of user interface data associated with the program from the program map table; and
outputting the user interface data, the image data and the audio data.
2 Assignments
0 Petitions
Accused Products
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.
22 Citations
11 Claims
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1. A method of signal processing, comprising:
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receiving a multiplexed signal;
selecting a program from the received multiplexed signal;
obtaining a program map table associated with the program;
obtaining packet identification information of image data associated with the program;
obtaining packet identification information of audio data associated with the program;
obtaining packet identification information of user interface data associated with the program from the program map table; and
outputting the user interface data, the image data and the audio data. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A method of signal processing, comprising:
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receiving a multiplexed signal at a receiving apparatus;
selecting an audio program from among a plurality of programs in the received multiplexed signal;
obtaining identification information for the selected audio program from user interface data in the received multiplexed signal;
searching for a descriptor corresponding to the identification information from a program map table of an audio channel;
selecting a portion of the program map table associated with the selected audio program;
determining whether authentication is required before downloading the selected audio program to an external storage device; and
downloading the selected audio program. - View Dependent Claims (9, 10, 11)
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Specification