Ricoh Company, Ltd.

Kyushu Institute of Technology

Yokogawa Hokushin Electric Corp.

Tetsuya Satoh

Hiroyuki Takahashi

Hideaki Yamamoto

Junichi Ikeda

Satoru Numakura

Koji Takeo

Mitsuru Suzuki

Noriyuki Terao

Tsuyoshi Ueno

Yuuki Oka

Kohki Sasaki

Seiya Abe

Hiroyuki Yamamoto

Toshio Kimura

Kenichiroh Saisho

Shuichi Nakagawa

Teruhiko Tokumo

Hiroshi Otsu

Hiroshi Kotan

A drive circuitincludes a power source; current control units-to-configured to control the amount of currents supplied to a light emitting element in accordance with a pulse modulation signal; and a calculation unitconfigured to change a duty ratio of a pulse modulation signal. The current control units-to-include a first switching elementconfigured to be switched on/off in accordance with a pulse modulation signal; and a second switching elementconfigured to be switched on/off in accordance with an inversion signal of the pulse modulation signal input to the first switching element; and an inductor. The first switching elementand the inductorare serially connected between the power source and the light emitting element. The second switching elementis connected between groundand a contact pointof the first switching elementand the inductor. The two or more current control units-to-are connected in parallel.

Drive circuit and light emitting device

An image processing system, an image generation apparatus, and an image generation method are provided. The image processing system includes a switching unit configured to switch an operating mode of the image processing system between at least a first mode and a second mode, a detection unit configured to detect a joining position among a plurality of input images to generate a detection result, and a joining unit configured to join the plurality of input images to generate an output image. When the mode is switched to the first mode, the joining unit joins the plurality of input images based on the detection result of the detection unit to generate the output image. When the mode is switched to the second mode, the joining unit joins the plurality of input images to generate the output image, without causing the detection unit to generate the detection result.

Image processing system, image generation apparatus, and image generation method

A communication apparatus for carrying out communications to and from an external apparatus that includes a first interconnecting unit and a first non-transparent port and effects an interconnection for communications via the first non-transparent port is provided. The communication apparatus includes a second interconnecting unit that includes a second non-transparent port communicably connected to the first non-transparent port. The second interconnecting unit effects an interconnection for communications via the second non-transparent port. The second interconnecting unit performs, when the communication apparatus carries out communications to and from the external apparatus, address translation between an address for use by the communication apparatus and an address for use by the second non-transparent port.

Communication apparatus, communication system and adapter

A memory control apparatus that controls writing and reading of data to/from a memory. The memory control apparatus includes: a sequence control unit that receives a packet sequence including a write packet including a write request of data and a read packet including a read request of the data, and changes an arrangement of the write packet and the read packet included in the packet sequence so that a first predetermined number of write packets are arranged successively and a second predetermined number of read packets are arranged successively; and a command output unit that receives the packet sequence from the sequence control unit, and outputs a write command according to the write packet and an a read command according to the read packet to the memory, in accordance with an order of arrangement of the write packet and the read packet.

Memory control apparatus, information processing apparatus, and memory control method

An information processing apparatus includes a plurality of output circuits that output a plurality of pieces of information to an external device. Each of the output circuits includes a synchronization control unit that synchronizes an operation clock of the output circuit with an operation clock of a separate output circuit; an information receiving unit that receives a piece of information that is different from a piece of information that is received by the separate output circuit; and an output control unit that outputs the received piece of information to the external device in accordance with the synchronized operation clock.

Information processing apparatus, image forming apparatus, and image processing method

An image projection apparatus includes an input part that inputs image data, a frame memory that stores the image data, a laser oscillator that radiates a laser to a screen, a deflection part including a reflective optical element and configured to oscillate the reflective optical element with respect to two perpendicularly intersecting axes, a storage part that stores coefficient data of a polynomial expression, an irradiation position calculating part that calculates an irradiation position based on a coefficient obtained by using the coefficient data and an oscillation angle of the reflective optical element, an address calculating part that calculates an address in the frame memory corresponding to the irradiation position, a memory control part that reads out pixel data of the address, and a laser drive part that oscillates the laser oscillator in accordance with a luminance that corresponds to the pixel data.

Image projection apparatus, memory control apparatus, laser projector, and memory access method

An image forming apparatus receives raster image data transferred from an external device and forms an image on the basis of the received raster image data. The apparatus includes a processor that controls a transfer of the raster image data from the external device, a first memory connected to the processor through a first bus is used as a working area of the processor, a second memory that stores the raster image data, a memory control unit connected to the second memory through a second bus controls an operation of writing and reading the raster image data in and from the second memory, a printer engine that forms an image on the basis of the raster image data, and an engine control unit that reads the raster image data from the second memory through the memory control unit and supplies the printer engine with the read raster image data.

Image forming apparatus and image forming system having a first memory and a second memory

An automatically balancing type pen recorder, which is compact in size and is highly reliable in operation, comprises an integral servo unit formed of a single printed circuit board which incorporates therein a pen carriage and an automatic balancing mechanism adapted to move a recording chart in a direction perpendicular to the direction of feed of the chart, in response to the magnitude of a measuring signal.

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Miyagi, Japan

Tetsuya Satoh