Abstract: To activate respective OSs separately through a network even in a virtual machine in which a plurality of OSs are installed, an M-packet acquiring unit acquires a received magic packet. An address detecting unit detects a MAC address that is stored in the magic packet. A control-list storage unit records correspondence between MAC addresses and guest OSs, and defines whether to activate the respective OSs by a remote operation. An activation determining unit refers to the control-list storage unit and determines whether to activate a guest OS that corresponds to the MAC address stored in the magic packet. A guest-OS control unit activates a guest OS that is determined to be activated by the activation determining unit.

Abstract: To activate respective OSs separately through a network even in a virtual machine in which a plurality of OSs are installed, an M-packet acquiring unit acquires a received magic packet. An address detecting unit detects a MAC address that is stored in the magic packet. A control-list storage unit records correspondence between MAC addresses and guest OSs, and defines whether to activate the respective OSs by a remote operation. An activation determining unit refers to the control-list storage unit and determines whether to activate a guest OS that corresponds to the MAC address stored in the magic packet. A guest-OS control unit activates a guest OS that is determined to be activated by the activation determining unit.

Abstract: Re-distribution servers are installed at the branch points of a network for distributing streaming data, and route costs between two re-distribution servers are collected. Then, a distribution route tree from a source to a plurality of clients is automatically generated based on the cost information.

Abstract: A personal information management apparatus electronically manages users' personal information, and includes a personal information database selection unit and a processing unit. The personal information database selection unit selects a personal information database based on predetermined rules from a personal information storage unit including a plurality of personal information databases respectively storing personal information about different situations of a user. The processing unit processes the personal information database selected by the personal information database selection unit such that the personal information can be read and written. Thus, personal information about different situations can be easily and collectively managed.

Abstract: A multicast distribution system of packet comprises routers connected with each other by a cable. Nodes are connected to each of the routers. The routers or the nodes is provided with a unit for relaying a packet having a list of the plurality of destination addresses and its undistributed bit map to the packet header to be transferred, according to the unicast route.

Abstract: The e-mail system includes: a text information notifying unit (21) for notifying a second information terminal (40) of text information of an e-mail message; a sound information storing unit for storing sound information related to the e-mail message; and a managing unit for managing association between the e-mail message and its related sound data. With this feature, it is possible for a user to reply to an original e-mail message by voice, thereby freeing a user from troublesome inputting text reply. Further, upon receipt of such a voice reply, the sender of the original mail can manage the reply in association with the original mail. Furthermore, upon receipt of an e-mail massage having information about sound information added thereto, it is possible to smoothly obtain the sound information.

Abstract: A computer-system fixed-priority process scheduler that is supported by an operating system (OS) and establishes fixed priorities respectively corresponding to a plurality of processes to be scheduled. Further, the priorities can be changed by designation from the user processes. The process scheduler allocates a central processing unit (CPU) to executable ones of the processes in the descending order of the priorities thereof. Moreover, a user-level process scheduler is provided in a fixed-priority process scheduler space, namely, in a real-time class process scheduler space. The user-level process scheduler has a first priority of a real time class. Furthermore, the user-level process scheduler performs the scheduling of a group of other user processes, which have priorities lower than the first priority, and causes the group of such user processes to operate or run.

Abstract: A portal site server system provides services of service systems to user terminals of users via at least one network. The portal site server system includes a user profile registering at least communication methods to the users, a communication priority table registering a priority order of the communication methods, a mechanism for making an inquiry to a specific user by a communication method which has a highest priority and is selected from the communication methods registered in the user profile depending on the communication priority table, when a service request is received from the specific user and an inquiry to the specific user is required, and a mechanism for updating the user profile based on information received from the specific user in response to the inquiry.

Abstract: A personal information management apparatus electronically manages users' personal information, and includes a personal information database selection unit and a processing unit. The personal information database selection unit selects a personal information database based on predetermined rules from a personal information storage unit including a plurality of personal information databases respectively storing personal information about different situations of a user. The processing unit processes the personal information database selected by the personal information database selection unit such that the personal information can be read and written. Thus, personal information about different situations can be easily and collectively managed.

Abstract: Re-distribution servers are installed at the branch points of a network for distributing streaming data, and route costs between two re-distribution servers are collected. Then, a distribution route tree from a source to a plurality of clients is automatically generated based on the cost information.

Abstract: The non-real time (NRT) bandwidth collector unit in a master apparatus collects the bandwidth of the non-real time (NRT) communications beforehand by decreasing the bandwidth limit value of a non-real time (NRT) queue in the client apparatus with a light traffic of a non-real time (NRT) communications. When the traffic of the non-real time (NRT) communications increases and there is a shortage of the bandwidth in a certain client apparatus, an increase request for the bandwidth is sent from the client apparatus to the master apparatus. The non-real time (NRT) bandwidth distributor unit in the master apparatus redistributes a new bandwidth limit value within the range of the collected bandwidth. The new bandwidth limit value is notified from the master apparatus to the client apparatus by a non-real time (NRT) bandwidth notifier unit and is set therein.

Abstract: A computer-system fixed-priority process scheduler that is supported by an operating system (OS) and establishes fixed priorities respectively corresponding to a plurality of processes to be scheduled. Further, the priorities can be changed by designation from the user processes. The process scheduler allocates a central processing unit (CPU) to executable ones of the processes in the descending order of the priorities thereof. Moreover, a user-level process scheduler is provided in a fixed-priority process scheduler space, namely, in a real-time class process scheduler space. The user-level process scheduler has a first priority of a real time class. Furthermore, the user-level process scheduler performs the scheduling of a group of other user processes, which have priorities lower than the first priority, and causes the group of such user processes to operate or run.

Abstract: An internal address bus, which is connected between a bus control unit and a memory control unit, is formed by a bidirectional bus. The bidirectional internal address bus is connected to an external address transferring bus which is used to transfer a write address in a system bus to the memory control unit. The bidirectional internal address bus is commonly used for renewal and invalidation of first and second buffers for an instruction cache and operand cache. Therefore, in the present invention, the number of the internal bus lines can be reduced, a control constitution can be simplified, and a consistency of contents in a plurality of internal buffers and the main memory can be easily maintained.