Information sending method and information sending apparatus, information receiving apparatus and information receiving method, information transmission system and information transmission method, and information recording medium
First Claim
1. An information sending apparatus for sending information to an information receiving apparatus via a transmitting device capable of transmitting said information in accordance with a first transmission mode for transmitting information so as to be synchronous to other information or a second transmission mode for transmitting information so as to be asynchronous to other information, said second transmission mode for transmitting said information at a higher speed than that of transmission in accordance with said first transmission mode, said information sending apparatus comprising:
- a first encrypting device for employing encryption processing information for encrypting said information, thereby encrypting specific information to be sent to said information receiving apparatus;
a first sending device for sending said encrypted specific information to said information receiving apparatus via said transmitting device in accordance with said second transmission mode;
a second encrypting device for encrypting said encryption processing information itself; and
a second sending device for sending said encrypted encryption processing information to said information receiving apparatus via said transmitting device in accordance with said first transmission mode.
1 Assignment
0 Petitions
Accused Products
Abstract
Encrypted music information or the like and encryption processing information itself employed for the encrypting is transmitted from a set top box (BX) to a recorder (R) via a serial bus (B) after decoded, and the music information or the like is recorded in a DVD-R (1). Upon this recording, the music information encoded by employing an asynchronous transmission region in the IEEE 1394 standard that is a standard with which the serial bus (B) conforms is transmitted at a high speed. On the other hand, encode processing information encoded by employing an isochronous transmission region in the IEEE 1394 standard is transmitted at a 1-fold speed.
10 Citations
11 Claims
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1. An information sending apparatus for sending information to an information receiving apparatus via a transmitting device capable of transmitting said information in accordance with a first transmission mode for transmitting information so as to be synchronous to other information or a second transmission mode for transmitting information so as to be asynchronous to other information, said second transmission mode for transmitting said information at a higher speed than that of transmission in accordance with said first transmission mode, said information sending apparatus comprising:
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a first encrypting device for employing encryption processing information for encrypting said information, thereby encrypting specific information to be sent to said information receiving apparatus; a first sending device for sending said encrypted specific information to said information receiving apparatus via said transmitting device in accordance with said second transmission mode; a second encrypting device for encrypting said encryption processing information itself; and a second sending device for sending said encrypted encryption processing information to said information receiving apparatus via said transmitting device in accordance with said first transmission mode. - View Dependent Claims (2, 3, 4, 7, 8, 9, 10, 11)
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5. An information sending method of sending information to an information receiving apparatus via a transmitting device capable of transmitting said information in accordance with a first transmission mode for transmitting information so as to be synchronous to other information or a second transmission mode for transmitting information so as to be asynchronous to other information, said second transmission mode for transmitting said information at a higher speed than that of transmission in accordance with said first transmission mode, said information sending method comprising the processes of:
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employing encryption processing information for encrypting said information, thereby encrypting specific information to be sent to said information receiving apparatus; sending said encrypted specific information to said information receiving apparatus via said transmitting device in accordance with said second transmission mode; encrypting said encryption processing information itself; and sending said encrypted encryption processing information to said information receiving apparatus via said transmitting device in accordance with said first transmission mode. - View Dependent Claims (6)
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Specification