INFORMATION PROCESSING TERMINAL AND CONTENT WRITING SYSTEM

• US 20080005589A1
• Filed: 06/05/2007
• Published: 01/03/2008
• Est. Priority Date: 06/29/2006
• Status: Active Grant

• Current Assignee: Megachips Corporation
• Original Assignee: Megachips Corporation
• Inventors: TSUKAZAKI, Fumiaki
• Granted Patent: US 9,092,648 B2
• Time in Patent Office: Days
• US Class Current: 713/193
• CPC Class Codes: G06F 21/50 Monitoring users, programs or devices to maintain the integrity of platforms, e.g. of processors, firmware or operating systems
• CPC Class Codes: G06F 21/62 Protecting access to data via a platform, e.g. using keys or access control rules
• CPC Class Codes: G06F 21/78 to assure secure storage of data address-based protection against unauthorised use of memory G06F12/14; record carriers for use with machines and with at least a part designed to carry digital markings G06K19/00

Abstract

An information processing terminal sends a download request for content data to a server. The server transmits command data to a command encryption device. The command encryption device encrypts the command data in an encryption circuit. The server sends the content data and the encrypted command data to the information processing terminal. A control part of the information processing terminal transmits the content data and the encrypted command data to a memory controller. The memory controller decodes the command data in a decoder circuit and stores the content data to a memory array.

Claims

1. An information processing terminal for writing content data into a memory, comprising:

content input means for inputting content data from the outside of said terminal;

command input means for inputting encrypted command data from the outside of said terminal; and

control means for giving encrypted command data and content data to said memory,

wherein said memory comprises

a memory array; and

a memory controller for decoding encrypted command data by using a decoder circuit and controlling an operation of writing content data into said memory array with the decoded command data.

2. The information processing terminal according to claim 1, wherein

said command input means includes means for downloading encrypted command data from a server via a network.

3. The information processing terminal according to claim 2, wherein

said server is connected to a command encryption device as an external equipment, which comprises an encryption circuit, and

command data given from said server is encrypted in said command encryption device and the encrypted command data is downloaded into said information processing terminal.

4. The information processing terminal according to claim 2, wherein

said server is connected to a command encryption device as an external equipment, which comprises an encryption circuit, and,

command data stored in said command encryption device is encrypted in said command encryption device and the encrypted command data is downloaded into said information processing terminal.

5. The information processing terminal according to claim 2, wherein

said server is connected via a network to an encryption server capable of performing encryption, and

command data given from said server is encrypted in said encryption server and the encrypted command data is downloaded into said information processing terminal.

6. The information processing terminal according to claim 2, wherein

said server is connected via a network to an encryption server capable of performing encryption, and

command data stored in said encryption server is encrypted in said encryption server and the encrypted command data is downloaded into said information processing terminal.

7. The information processing terminal according to any one of claims 3 to 6, further including

means for sending identifying information of said memory to said server,

wherein said content input means includes

means for downloading encrypted content data from said server via a network, and

said server is connected to a content encryption device as an external equipment, which comprises an encryption circuit, and content data given from said server is encrypted in said content encryption device by using said identifying information and the encrypted content data is downloaded into said information processing terminal.

8. A system for writing content data into a memory, comprising:

an information processing terminal; and

a server,

wherein said information processing terminal comprises

content input means for inputting content data from the outside of said terminal;

means for downloading encrypted command data from said server; and

control means for giving encrypted command data and content data to said memory, and

said memory comprises

a memory array; and

a memory controller for decoding encrypted command data by using a decoder circuit and controlling an operation of writing content data into said memory array with the decoded command data.

9. The content writing system according to claim 8, wherein

said server is connected to a command encryption device as an external equipment, which comprises an encryption circuit, and

command data given from said server is encrypted in said command encryption device and the encrypted command data is downloaded into said information processing terminal.

10. The content writing system according to claim 8, wherein

said server is connected to a command encryption device as an external equipment, which comprises an encryption circuit, and,

command data stored in said command encryption device is encrypted in said command encryption device and the encrypted command data is downloaded into said information processing terminal.

11. The content writing system according to claim 8, wherein

said server is connected via a network to an encryption server capable of performing encryption, and

command data given from said server is encrypted in said encryption server and the encrypted command data is downloaded into said information processing terminal.

12. The content writing system according to claim 8, wherein

said server is connected via a network to an encryption server capable of performing encryption, and

command data stored in said encryption server is encrypted in said encryption server and the encrypted command data is downloaded into said information processing terminal.

13. The content writing system according to any one of claims 9 to 12, wherein

said information processing terminal further comprises

means for sending identifying information of said memory to said server,

said content input means includes

means for downloading encrypted content data from said server via a network, and

said server is connected to a content encryption device as an external equipment, which comprises an encryption circuit, and content data given from said server is encrypted in said content encryption device by using said identifying information and the encrypted content data is downloaded into said information processing terminal.