摘要:
A management system for a parallel computer system having a control terminal for collectively controlling the maintenance and management of a plurality of nodes constituting the parallel computer system. In the management system, each of a plurality of nodes includes: a main processor operated with a main power source of the node for performing parallel processing; a sub-processor operated with an auxiliary power source of the node for executing a system control command for controlling the main processor; and a system control adapter operated with the auxiliary power source for communications with the control terminal for the system control and for controlling the sub-processor, the control terminal includes a system control adapter for communications with a plurality of system control adapters of the plurality of nodes, and the parallel computer system includes a system control interface for connecting the plurality of system control adapters of the plurality of nodes to the system control adapter of the control terminal and for transmitting the system control command for the maintenance and management of a plurality of main processors of the plurality of nodes, from the control terminal to a plurality of sub-processors of the plurality of nodes.
摘要:
An exposure device includes a reference current generating unit generating a reference current for each image of respective colors, a photoelectric current generating unit generating a photoelectric current in response to a light amount of the light emitting element, a driving unit driving the light emitting element, a first controller, a drive voltage holding unit holding a drive voltage given to the driving unit, a second controller controlling the driving unit based on the drive voltage held, a comparison current generating unit generates a comparison current, a difference current generating unit generating a difference current, of each color, corresponding to a difference between the reference current of each color and the comparison current. The first controller compares a value obtained by adding the difference current of each color to the photoelectric current with the comparison current to control the driving unit so that the photoelectric current becomes the reference current.
摘要:
An image forming apparatus includes a paper fiber reading unit that reads fiber properties of a paper sheet; an encryption unit that encrypts at least a part of an input image based on the fiber properties read by the paper fiber reading unit; and a printing unit that prints an encrypted image portion encrypted by the encryption unit and an image including information representing the fiber properties read by the paper fiber reading unit on the paper sheet whose fiber properties are read by the paper fiber reading unit.
摘要:
An image formation system includes a medium-pattern-information-read-unit that reads pattern information of a surface of a medium; a pattern-information-image-creation-unit that creates a pattern Information image based on the read pattern information; and a print unit that adds the pattern information image to a print image to be printed on the surface of the medium and prints the print image on the medium.
摘要:
A light transmission device transmits an image signal on light to an output device based on a control signal for controlling the image signal. The light transmission device includes a transmitting interface component, a receiving interface component, and a light transmitting medium. The transmitting interface component converts the image signal to a light signal and transmits the light signal. The receiving interface component converts the light signal transmitted from the transmitting interface component to an image signal and transmits the same to the output device. The light transmitting medium connects the transmitting interface component and the receiving interface component. The transmitting interface component includes a combining component, which classifies the image signal to each of plural bit data channels according to a predetermined condition, inserts the control signal into the remaining bits of the bit data channels and then carries out modulation.
摘要:
A system for controlling the DMA transfer for a plurality of IO devices has an IO controller for each group of the IO devices. Data is retrieved from memory and stored in the IO controller where it is analyzed. The retrieved data has a structure that permits a group of DMA start request quads to be linked together for parallel or pipeline processing of the DMA transfer requests. Each start request quad has a pointer for additionally retrieving corresponding command data. The command data is set forth in a number of blocks, each linked to the next one by a pointer. When a DMA processing has been completed, the termination or completion status is entered into a specific entry in a completion list for the corresponding IO device. Thus, a determination can be made as to whether specific IO devices have completed a requested DMA processing. Expansion of the system is accomplished by using combinations of main and sub controllers, where one main controller provides the aforementioned data structures for many sub controllers in order to enable the DMA processing to be performed for IO devices connected to the sub controllers with less frequent access of system main memory and the system bus.