Fuji Xerox Co., Ltd.

Fujitsu Corporation

Sony Corporation

Yukio Yamazaki

Kouichi Azuma

Taketoshi Yamaguchi

Junichi Ishiwatari

Makoto Kimura

Nobuyuki Ishikawa

Takashi Kuwabara

Masahiro Shioda

Atsuki Taniguchi

Shinho Ikeda

Tsuyoshi Morishita

Masaaki Saito

Takatoshi Nakamura

A method of identifying a cause of an interrupt related to an interrupt indication received from an interrupt indicating circuit in a processor, includes the steps of having the interrupt indicating circuit provided with a plurality of lowest-layer registers having a plurality of bits, each of the plurality of bits corresponding to the cause of the interrupt, and one or more upper-layer registers for aggregating the plurality of lowest-layer registers; forming a hierarchical structure with the one or more upper-layer registers and the plurality of lowest-layer register; and identifying the cause of the interrupt by having the processor read the upper-layer registers and the lowest-layer registers in order following the hierarchical structure.

Method and apparatus for identifying cause of interrupt

A receiving apparatus includes: a signal-level detecting unit detecting a signal level of an input signal; a first signal-level converting unit including amplifiers, capturing the input signal and converting a signal level of the input signal; a switching unit switching an output of a converted level signal; a switching control unit selecting a specific amplifier and controlling the switching unit to select an output signal from the selected amplifier; a band-pass filter allowing only a predetermined frequency hand in the switched signal to pass; a second signal-level converting unit converting a signal level of an output signal from the amplifier into a predetermined signal level at which S/N of a mixer is maximized; the mixer mixing the converted signal passed through the band-pass filter, and an oscillation signal to generate an intermediate frequency signal; and a demodulating unit demodulating the intermediate frequency signal.

Receiving apparatus, imaging apparatus, and receiving method

An image formation apparatus includes a reception section, a function section, an image formation section and a power output device. The reception section is configured to be connected to a communication line over which image information and power are transmitted. The reception section receives the image information and the power transmitted over the communication line. The function section receives supply of the power received by the reception section, to function. The image formation section forms an image on a medium based on the image information received by the reception section or the function section. The power output device receives power supply from a commercial power supply. The power output device outputs power of a predetermined voltage to the image formation section.

Communication system, image formation apparatus, controller, computer readable medium and data signal

The electric power supply system includes a first terminal that electric power is supplied thereto from a first power supply to operate, a second terminal that is connected to the first terminal and that electric power is supplied thereto from a second power supply to operate, and a controller that controls electric power supply so as to supply electric power from the first terminal to the second terminal based on the operation state of the first terminal.

Electric power supply system, terminal, electric power supply method and computer readable medium

A power supply system includes: a first device that commands an external device to perform processing, and is configured to supply electric power to the external device; a second device that is connected to the first device through a communications line, and that performs the processing in accordance with the command received from the first device; and a request unit that requests the first device to supply to the second device an amount of electric power needed for the second device performing the processing commanded by the first device, the first device determining whether or not to supply electric power to the second device, in accordance with at least one of; (i) content of the command sent to the second device, and (ii) the amount of electric power requested by the request unit and an amount of electric power which the first device is capable of supplying.

Power supply system and management system

A power feed system includes: an information device; a terminal device that is connected the information processing device, and that has a power source; and a selection unit that selects, as power utilized by the terminal device, at least one of first power from the power source of the terminal device and second power supplied from the information processing device according to an operating state of the terminal device.

Power feed system, terminal device, power feeding method and computer readable medium

The power supply management system is provided with an information processor and a terminal that is connected to the information processor by a communication line and a power supply line and that is controlled for power supply by the information processor. The terminal includes a monitor unit that is capable of monitoring at least any one of a signal received from the outside through the communication line and a signal detected inside by using the electric power supplied through the power supply line and a change unit that changes an internal power supply path so as to supply electric power other than the electric power supplied through the power supply line on the basis of the monitoring results of the monitor unit.

Power supply management system for changing the path of an internal power supply of a device

In an error correcting method and an apparatus therefor using Hamming codes, a frame regulated by a synchronous network is divided into L blocks in the direction of row. Preferably, information bits and check bits are allocated to a payload portion and non-defined bits of an LOH portion, respectively. More preferably, the information bits and the check bits are divided into M sub blocks to form a Hamming code block. In addition, a code error correcting means rearrange each Hamming code block per bit and further preferable, a syndrome register with a plurality of banks operates an error syndrome of the Hamming code block, and based on the operation result, the code error correction of the Hamming code block is performed by a bank switchover.

Error correcting method and apparatus

An error correction method and a transmission apparatus used in a transmission using a frame including a header and a payload are provided. In the error correction method and the transmission apparatus, a pseudo error is inserted in check bits of the frame to be transmitted. Thus, an error-correcting function of a transmitter and a receiver can be easily tested. A mismatch of a state of validation or invalidation of the error-correcting function between the transmitter and the receiver can be avoided without affecting a main signal by inserting information on whether or not an error correction is performed in an unused area of the header in the transmitter.

Growing community of inventors

Kanagawa, Japan

Yukio Yamazaki