Abstract: An information processing apparatus switches from a regular power mode to a power saving mode in the event that a first control unit does not process packets for a certain period of time. The information processing apparatus includes a packet table in which packets to be processed by the first control unit are registered, and a determining unit for determining whether the system of the information processing apparatus can switch to the power saving mode. In the event that the determining unit determines that the system can switch to the power saving mode, a network controller processes the packets based on the packet table.

Abstract: An information processing apparatus switches from a regular power mode to a power saving mode in the event that a first control unit does not process packets for a certain period of time. The information processing apparatus includes a packet table in which packets to be processed by the first control unit are registered, and a determining unit for determining whether the system of the information processing apparatus can switch to the power saving mode. In the event that the determining unit determines that the system can switch to the power saving mode, a network controller processes the packets based on the packet table.

Abstract: An image processing device including a first control unit to control a normal operating mode during which image processing is performed, a second control unit to control an energy-saving mode during which power consumption is lower than during the normal operating mode, an interrupt request receiver connected to an external device to receive an interrupt request from the external device, interrupt factor distributors to distribute the interrupt request received by the interrupt request receiver based on whether or not the interrupt request includes a predetermined interrupt factor, interrupt request notification units to notify the second control unit as well as the first control unit of the interrupt request in accordance with distribution results from the interrupt factor distributors, and job adjustors to control transfer of a job between the first control unit and the second control unit based on notification from the interrupt request notification units.

Abstract: An information processing apparatus switches from a regular power mode to a power saving mode in the event that a first control unit does not process packets for a certain period of time. The information processing apparatus includes a packet table in which packets to be processed by the first control unit are registered, and a determining unit for determining whether the system of the information processing apparatus can switch to the power saving mode. In the event that the determining unit determines that the system can switch to the power saving mode, a network controller processes the packets based on the packet table.

Abstract: Each of a plurality of control units starts the control unit with one of a first start method and a second start. When a first control unit among the control units starts with a second start method, the first control unit instructs a second control unit among the control units to start with the second start method. Thus, all the control units are started with the same start method.

Abstract: The present invention provides a data storage device comprising a disk storage medium containing user data in a plurality of sectors, a head for writing or reading the user data and error correcting means for correcting an error that occurs in the user data during the reading process. The error correcting means comprises a syndrome generator for generating syndromes on the basis of the user data contained in predetermined sectors, registers for storing the syndromes generated and an exclusive OR circuit for exclusive ORing the values stored in the registers.

Abstract: The present invention provides a data storage device comprising a disk storage medium containing user data in a plurality of sectors, a head for writing or reading the user data and error correcting means for correcting an error that occurs in the user data during the reading process. The error correcting means comprises a syndrome generator for generating syndromes on the basis of the user data contained in predetermined sectors, registers for storing the syndromes generated and an exclusive OR circuit for exclusive ORing the values stored in the registers.

Abstract: An image forming device includes an information acquisition unit which acquires information of an execution environment of the image forming device. A program identifying unit identifies a first program which is executable in the execution environment of the image forming device, based on the acquired information of the execution environment. A copy unit copies the identified first program and a second program of a program package to a storage unit of the image forming device. The information acquisition unit, the program identifying unit, and the copy unit are installed in the image forming device by executing a program for installation of the program package.

Abstract: A power supplying mode switching controller is disclosed. The power supplying mode switching controller includes a main controller which controls an image forming apparatus, a power supply circuit which has a normal mode and a power saving mode, an I/O controller which switches the power supply circuit to the normal mode when a factor returning to the normal mode is generated in the power saving mode, and an SD interface to which an SD card is attached. The I/O controller includes a first attaching change detecting circuit which detects an attaching change of the SD card to the SD interface, and when the first attaching change detecting circuit detects the attaching change of the SD card to the SD interface in the power saving mode, the I/O controller switches the power supply circuit to the normal mode and informs the main controller of the attaching change of the SD card.

Abstract: Each of a plurality of control units starts the control unit with one of a first start method and a second start. When a first control unit among the control units starts with a second start method, the first control unit instructs a second control unit among the control units to start with the second start method. Thus, all the control units are started with the same start method.

Abstract: An information processing apparatus switches from a regular power mode to a power saving mode in the event that a first control unit does not process packets for a certain period of time. The information processing apparatus includes a packet table in which packets to be processed by the first control unit are registered, and a determining unit for determining whether the system of the information processing apparatus can switch to the power saving mode. In the event that the determining unit determines that the system can switch to the power saving mode, a network controller processes the packets based on the packet table.

Abstract: An image processing device including a first control unit to control a normal operating mode during which image processing is performed, a second control unit to control an energy-saving mode during which power consumption is lower than during the normal operating mode, an interrupt request receiver connected to an external device to receive an interrupt request from the external device, interrupt factor distributors to distribute the interrupt request received by the interrupt request receiver based on whether or not the interrupt request includes a predetermined interrupt factor, interrupt request notification units to notify the second control unit as well as the first control unit of the interrupt request in accordance with distribution results from the interrupt factor distributors, and job adjustors to control transfer of a job between the first control unit and the second control unit based on notification from the interrupt request notification units.

Abstract: A data storage device comprising a disk storage medium containing user data in a plurality of sectors wherein each of the plurality of sectors comprises a subdivision of a track, a head for writing or reading the user data and error correcting means for correcting an error that occurs in the user data during the reading process. The error correcting means comprises a syndrome generator for generating syndromes on the basis of the user data, a Euclid circuit, a chien search circuit and a verification circuit, and makes the error correction using a first error correcting code appended to each of a plurality of sectors and a second error correcting code appended to said sector for every block composed of a predetermined number of sectors.

Abstract: An exclusive OR (XOR) of user data (sector) 0, user data (sector) 1 and user data (sector) 2 is performed to provide virtual user data, thereby giving rise to a correlation of the sectors 0 to 2, and the virtual user data is appended with a second error correcting code C2 having a greater error correction capability than a first error correcting code C1, whereby an error uncorrectable with C1 is correctable with C2.

Abstract: An exclusive OR (XOR) of user data (sector) 0, user data (sector) 1 and user data (sector) 2 is performed to provide virtual user data, thereby giving rise to a correlation of the sectors 0 to 2, and the virtual user data is appended with a second error correcting code C2 having a greater error correction capability than a first error correcting code C1, whereby an error uncorrectable with C1 is correctable with C2.

Abstract: A power supplying mode switching controller is disclosed. The power supplying mode switching controller includes a main controller which controls an image forming apparatus, a power supply circuit which has a normal mode and a power saving mode, an I/O controller which switches the power supply circuit to the normal mode when a factor returning to the normal mode is generated in the power saving mode, and an SD interface to which an SD card is attached. The I/O controller includes a first attaching change detecting circuit which detects an attaching change of the SD card to the SD interface, and when the first attaching change detecting circuit detects the attaching change of the SD card to the SD interface in the power saving mode, the I/O controller switches the power supply circuit to the normal mode and informs the main controller of the attaching change of the SD card.

Abstract: The exclusive OR (XOR) of user data (sector) 0, user data (sector) 1 and user data (sector) 2 is taken to have the virtual user data, thereby giving rise to a correlation of the sectors 0 to 2, and its virtual user data is appended with C2 having a greater error correction capability than C1, whereby an error uncorrectable with C1 is correctable with C2.

Abstract: The exclusive OR (XOR) of user data (sector) 0, user data (sector) 1 and user data (sector) 2 is taken to have the virtual user data, thereby giving rise to a correlation of the sectors 0 to 2, and its virtual user data is appended with C2 having a greater error correction capability than C1, whereby an error uncorrectable with C1 is correctable with C2.

Abstract: To improve the probability of error correction, thereby generating correct read data. Data is read from the same sector by a number of times and a majority decision is done in the same address, thereby the most frequently read value is regarded as the true data value in the address. For example, for an address 00, “00” is handled as a true data value.

Abstract: An image processing device including a first control unit to control a normal operating mode during which image processing is performed, a second control unit to control an energy-saving mode during which power consumption is lower than during the normal operating mode, an interrupt request receiver connected to an external device to receive an interrupt request from the external device, interrupt factor distributors to distribute the interrupt request received by the interrupt request receiver based on whether or not the interrupt request includes a predetermined interrupt factor, interrupt request notification units to notify the second control unit as well as the first control unit of the interrupt request in accordance with distribution results from the interrupt factor distributors, and job adjustors to control transfer of a job between the first control unit and the second control unit based on notification from the interrupt request notification units.