Method and apparatus for controlling remote power source

• US 5,652,892 A
• Filed: 10/17/1994
• Issued: 07/29/1997
• Est. Priority Date: 10/20/1993
• Status: Expired due to Fees

• Current Assignee: Hitachi, Ltd.
• Original Assignee: Hitachi, Ltd.
• Inventors: Ugajin, Atsushi
• Primary Examiner(s): Ray, Gopal C.
• Assistant Examiner(s): Travis, John
• Application Number:
  US08/323,886
• Time in Patent Office: 1,016 Days
• Field of Search: 395/325, 395/750, 355/200, 355/206, 340/825, 340/37, 364/707
• US Class Current: 713/310
• CPC Class Codes: G06F 21/81 by operating on the power supply, e.g. enabling or disabling power-on, sleep or resume operations
• CPC Class Codes: H04L 12/10 Current supply arrangements
• CPC Class Codes: H04L 12/12 Arrangements for remote connection or disconnection of substations or of equipment thereof
• CPC Class Codes: Y02D 30/50 in wire-line communication networks, e.g. low power modes or reduced link rate

Abstract

Remote power source control for a system having a plurality of information processing apparatuses interconnected by a network or networks capable of controlling remote power sources irrespective of different types of networks and providing security checks. Each information processing apparatus is provided with a remote power source controller which is always operated by an auxiliary power source. In instructing a power control of a remote information processing apparatus, control data is transferred between the remote information processing apparatus and a local information processing apparatus. The remote information processing apparatus checks a user ID and a password transmitted from the local processing apparatus prior to controlling its main power source.

Claims

1. A remote power source control apparatus for a system, the system including a network and a plurality of information processing apparatuses connected to the network, the remote power source control apparatus comprising:

a plurality of main power sources disposed in respective ones of the information processing apparatuses;

a plurality of auxiliary power sources disposed in respective ones of the information processing apparatuses; and

a plurality of remote power source controllers disposed in respective ones of the information processing apparatuses;

wherein in each of the information processing apparatuses, the auxiliary power source is always turned on and always supplies power to only the remote power source controller such that all elements of the remote power source controller are always turned on, and never supplies power to any other element of the information processing apparatus;

wherein in each of the information processing apparatuses, the main power source supplies power to all elements of the information processing apparatus except the auxiliary power source and the remote power source controller when the main power source is turned on; and

wherein in each of the information processing apparatuses, the remote power source controller includes;

communication means for transmitting data to and receiving data from the network; and

main power source control means for selectively turning on and turning off the main power source in response to data received from the network.

2. A remote power source control apparatus according to claim 1, wherein in each of the information processing apparatuses, the main power source control means further includes data checking means for checking whether the data received from the network was transmitted to the network by an authorized user.

3. A remote power source control apparatus according to claim 2, wherein the network includes at least one of a local area network (LAN) and a wide area network (WAN);

wherein in each of the information processing apparatuses, the communication means includes at least one of a LAN control interface and a WAN control interface; and

wherein in each of the information processing apparatuses, the remote power source controller further includes access determining means, responsive to an output of the data checking means, for determining whether the data received from the network was transmitted to the network by a user authorized to control the main power source of the information processing apparatus.

4. A remote power source control apparatus according to claim 1, wherein the information processing apparatuses include:

an information processing apparatus operating as a power source controlling apparatus; and

a plurality of information processing apparatuses operating as power source controlled apparatuses; and

wherein the remote power source controller of the power source controlling apparatus further includes means for storing a control program predefining at least one of a turn-on order and a turn-off order of the main power sources of power source controlled apparatuses.

5. A remote power source control apparatus according to claim 1, wherein the information processing apparatuses include:

an information processing apparatus operating as a server; and

an information processing apparatus operating as a client; and

wherein the server controls the main power source of the client via the remote power source controller of the client.

6. A remote power source control apparatus according to claim 1, wherein the information processing apparatuses include:

an information processing apparatus operating as a server; and

an information processing apparatus operating as a client; and

wherein the client controls the main power source of the server via the remote power source controller of the server.

7. A remote power source control apparatus according to claim 1, wherein the information processing apparatuses include:

an information processing apparatus operating as a first server; and

an information processing apparatus operating as a second server; and

wherein the first server controls the main power source of the second server via the remote power source controller of the second server.

8. A remote power source control apparatus according to claim 1, wherein the information processing apparatuses include:

an information processing apparatus operating as a first client; and

an information processing apparatus operating as a second client; and

wherein the first client controls the main power source of the second client via the remote power source controller of the second client.

9. A remote power source control apparatus according to claim 1, wherein the information processing apparatuses include:

an information processing apparatus operating as a power source controlling apparatus; and

a plurality of information processing apparatuses operating as a multiprocessor system;

wherein the power source controlling apparatus controls the main power source of one of the information processing apparatuses of the multiprocessor system via the remote power source controller of the one information processing apparatus of the multiprocessor system; and

wherein the one information processing apparatus of the multiprocessor system controls the main power sources of other ones of the information processing apparatuses of the multiprocessor system via the remote power source controllers of the other information processing apparatuses of the multiprocessor system.

10. A remote power source control apparatus according to claim 9, wherein the one information processing apparatus of the multiprocessor system sequentially controls the main power sources of the other information processing apparatuses of the multiprocessor system via the remote power source controllers of the other information processing apparatuses such that the main power sources of the other information processing apparatuses of the multiprocessor system are at least one of sequentially turned on one at a time and sequentially turned off one at a time.

11. A remote power source control method for a system, the system including a network and a plurality of information processing apparatuses connected to the network, the remote power source control method comprising the steps of:

providing each of the information processing apparatuses with a respective main power source, a respective auxiliary power source, and a respective remote power source controller,

wherein in each of the information processing apparatuses, the auxiliary power source is always turned on and always supplies power to only the remote power source controller such that all elements of the remote power source controller are always turned on, and never supplies power to any other element of the information processing apparatus,

wherein in each of the information processing apparatuses, the main power source supplies power to all elements of the information processing apparatus except the auxiliary power source and the remote power source controller when the main power source is turned on, and

wherein in each of the information processing apparatuses, the remote power source controller includes a processor, a memory, and a main power source driver;

storing, in each of the information processing apparatuses, security information in the memory, the security information being for use in checking whether data received from the network was transmitted to the network by an authorized user;

receiving, in each of the information processing apparatuses, using the processor, data from the network;

checking, in each of the information processing apparatuses, using the processor, whether the data received from the network is power source control data which was transmitted to the network by an authorized user based on the security information stored in the memory; and

controlling, in each of the information processing apparatuses, using the processor, the main power source driver to selectively turn on and turn off the main power source in response to the power source control data if it is determined in the checking step that the data received from the network is power source control data which was transmitted to the network by an authorized user.

12. A remote control power source method according to claim 11, further comprising the step of transmitting power source control data to the network from one of the information processing apparatuses;

wherein the power source control data transmitted to the network from the one information processing apparatus is power source control data for controlling the main power source driver of at least one other one of the information processing apparatuses.

13. A remote control power source method according to claim 12, wherein the power source control data transmitted to the network from the one information processing apparatus is power source control data for controlling the main power source driver of a plurality of other ones of the information processing apparatuses, and is transmitted to the network in a multicast manner.