Program data file storage method in broadcast receiver and...

Details Program data file storage method in broadcast receiver and... Program data file storage method in broadcast receiver and...

2004-12-16

2011-12-27

Shaw, Yin-Chen (Department: 2439)

Electrical computers and digital processing systems: support

Multiple computer communication using cryptography

Particular communication authentication technique

C713S168000, C713S176000, C713S189000, C726S002000, C726S003000, C726S004000, C726S005000, C726S026000, C726S027000

Reexamination Certificate

active

08086862

ABSTRACT:
Conventionally, when the version of a program has been upgraded, the whole of a currently stored program needs to be deleted to be replaced by a new program, and authentication needs to be performed again on such new program when it is activated. However, since the whole of the program is required to be stored and authenticated even when only a part of such program has changed, it consumes time and leads to the decrease in responsiveness. In order to solve this problem, the present invention extracts a difference between a new program and a currently stored old program, when such new program is to be stored, and the new program is to be stored after authentication is performed only on such difference.

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