Program distribution system

A method for distributing a program to a plurality of clients through a server such that the clients can open the program after a scheduled date and time for releasing the program, comprising:

• subdividing the program into a plurality of program blocks with each having a predetermined size;
• storing the program blocks in the server connected to a plurality of client terminal devices;
• authenticating each of the clients through each of the client terminal devices;
• distributing the program blocks to each of the client terminal devices;
• and
• storing the program blocks in memory of each of the client terminal devices such that the program can be restored from the program blocks after the scheduled date and time for releasing the program has been reached.

A program distribution system comprising:

• a first network including a first server and a first client terminal device connected to the first server;
• and
• a second network including a plurality of second servers connected to the first network through a data circuit, each of the second servers being connected to a plurality of second client terminal devices,
• the first network further including
• a program creating section being configured to create a program, revise the program and check an operation of the program,
• a program subdividing section being configured to subdivide the program into a plurality of program blocks with each having a predetermined size,
• a program distributing section being configured to distribute the program blocks to the second servers of the second network, and
• a client authenticating section being configured to authenticate a client to which the program blocks will be distributed,
• each of the second client terminal devices including
• a program block storing section being configured to store the program blocks distributed from a corresponding one of the second servers,
• a restoration schedule setting section being configured to set date and time for restoration of the program from the program blocks,
• an information exchanging section being configured to exchange information with the corresponding one of the second servers to establish a restoration program for restoring the program from the program blocks, and
• a restored program storing section being configured to store the program restored from the program blocks.

A program distribution system comprising:

• a first network including a first server and a first client terminal device connected to the first server;
• a second network including a second server connected to the first network and a plurality of third servers connected to the first network and the second server through a data circuit, each of the third servers having a plurality of third client terminal devices connected thereto,
• the first network further including
• a program creating section being configured to create a program, revise the program, and check an operation of the program,
• a program subdividing section being configured to subdivide the program into a plurality of program blocks with each having a predetermined size, and
• a program transmitting section being configured to transmit the program blocks to the second server, and
• the second server including
• a program block storing section being configured to store the program blocks, and
• a program distributing section being configured to distribute the program blocks to the third servers, and
• each of the third servers including
• a client authenticating section being configured to authenticate a client to which the program blocks will be distributed,
• a program block storing section being configured to store the program blocks, and
• a restoration program storing section being configured to store the restoration program, and
• each of the third client terminal devices including
• a program block storing section being configured to store the program blocks distributed from a corresponding one of the third servers,
• a restoration schedule setting section being configured to set date and time for restoration of the program,
• an information exchanging section being configured to exchange information with the corresponding one of the third servers to establish a restoration program for restoring the program from the program blocks, and
• a restored program storing section being configured to store the program restored from the program blocks.

A program distribution apparatus comprising:

• a program distribution server configured to distribute a program to at least one client terminal device including
• a program subdividing section being configured to subdivide the program into a plurality of program blocks with each having a predetermined size,
• a restoration program creating section being configured to create a restoration program for restoring the program from the program blocks, and
• a program distributing section being configured to distribute the program blocks and the restoration program to the at least one client terminal device.

A method for distributing a program through a program distribution server to at least one client terminal device, comprising:

• subdividing the program into a plurality of program blocks with each having a predetermined size;
• creating a restoration program for restoring the program from the program blocks;
• and
• distributing the program blocks and the restoration program to the at least one client terminal device.

A program distribution system for distributing a program to a client comprising:

• program distributing means for
• subdividing the program into a plurality of program blocks with each having a predetermined size,
• storing the program blocks subdivided in the program subdividing section,
• authenticating the client to whom the program blocks will be distributed, and
• distributing the program blocks to the client;
• and
• program receiving means for
• receiving and storing the program blocks from the program distributing means,
• setting a scheduled date and time for restoration of the program from the program blocks, and
• storing the program restored from the program blocks.