Abstract: A signal communication apparatus includes a transmission component, a reception component and an identification information storage component. The transmission component is connectable to an information processing device and a signal propagation medium, and transmits an inputted image signal through the connected signal propagation medium. The reception component is connectable with an image display device and the signal propagation medium, receives the image signal transmitted from the transmission component through the connected signal propagation medium, and outputs the image signal to the connected image display device. The identification information storage component is removably attached to the transmission component, and stores identification information for identifying the image display device.

Abstract: An optoelectric composite wiring module includes: a pair of optical circuit sections, each including an optical element that performs photoelectric conversion and that receives or outputs an optical signal; an optical wiring section including an optical wiring that transmit the optical signal between the pair of optical circuit sections; and an electric wiring section including an electric wiring that transmits an electric power or electric signal that is not related to the photoelectric conversion, the electric wiring section including a first portion being stacked above the optical wiring section and a second portion being separated from and not stacked above each of the pair of optical circuit sections.

Abstract: An optical communication device has: an optical waveguide device having an optical waveguide core that guides light, a cladding portion enveloping the optical waveguide core, a mirror surface structured at an end surface of the cladding portion and the optical waveguide core, and changing an optical path of light that passes through the optical waveguide core, and an electrically-conductive film formed so as to cover the mirror surface; a reference potential member at which a predetermined potential is ensured; and a connecting member electrically connecting the electrically-conductive film and the reference potential member.

Abstract: The first and second light-emitting regions are provided on the light source. When the first optical fiber having the first core diameter is connected, the light emitted from the first light-emitting region enters the first core. When the second optical fiber having a greater core diameter than the first core diameter is connected, the lights emitted from the first and second light-emitting regions enter the second core. It is thus possible to connect the optical transmission device with multiple optical fibers having different core diameters. It is thus possible to provide the optical transmission device and the communication device, which are low in cost and high in convenience.

Abstract: An optical transmission module includes: a substrate; an electric wiring section that is provided on the substrate; a photoelectric element that are mounted on the electric wiring section, and that emits an optical signal on the basis of a received electric signal or transmits an electric signal on the basis of a received optical signal; an optical part that comprises at least one of an optical conversion section and an optical fiber receptacle section, and that controls an optical path of optical signal between the photoelectric element and an optical fiber; a mounting support member that positions the photoelectric element; and a positioning mechanism that positions the optical part and the mounting support member.

Abstract: In an optical signal transmission system which can perform high-speed optical transmission not lower than 1 Gbps, VCSEL has light-emission points. A core diameter of an optical fiber GI-POF is set to not lower than 200 ?m, and the light-emission points of VCSEL are arranged inside an outer periphery at an end face of GI-POF. A polymerization composition material constituting the core of GI-POF is made of a compound containing deuterated poly methacrylic ester. A wavelength of the light beam of VCSEL is set to the range of 770 nm to 810 nm.

Abstract: A transmission unit of a signal transmission device includes: a transmission-side detection unit that detects image information from an inputted electrical signal; a receiving unit that receives, from a reception unit, a status signal representing an arrival status of an outputted optical signal; and a control unit that controls an electrical-optical conversion unit on the basis of the detection result of the transmission-side detection unit and the status signal of the receiving unit so that the output of the optical signal is shut down in at least one of a case where image information is not included in an electrical signal and a case where an optical signal has not arrived.

Abstract: An optoelectric composite wiring module includes: a pair of optical circuit sections, each including an optical element that performs photoelectric conversion and that receives or outputs an optical signal; an optical wiring section including an optical wiring that transmit the optical signal between the pair of optical circuit sections; and an electric wiring section including an electric wiring that transmits an electric power or electric signal that is not related to the photoelectric conversion, the electric wiring section including a first portion being stacked above the optical wiring section and a second portion being separated from and not stacked above each of the pair of optical circuit sections.

Abstract: A multifunction system has advanced functions and high speed capability and is excellent in expandability. The multifunction system includes a controller, an IIT, an IOT, and a light distributing device. For a print job, print data outputted from the controller is converted into optical signals, which enter a light distributing device and are transmitted to the IOT of the emission side. The IOT prints the received data onto a printer. For a copy job, copy data outputted from IIT is converted into optical signals, which enter the light distributing device, and are transmitted to the IOT of the emission side. For a scan job, scan data outputted from the scanner is converted into optical signals, which enter the light distributing device, and are transmitted to the controller of the emission side. The controller processes the received data.

Abstract: In an optical transmission apparatus in which a plurality of nodes are optically connected to one another via an optical transmission path, a light signal which is coded so that a mixture ratio of 1 and 0 constituting data is made close to 50% is transmitted through the optical transmission path. When a light signal is not emitted from all of the nodes, a dummy signal which is an AC-like signal is emitted to the optical transmission path. Therefore, an optoelectric conversion section can be always set to an active state, and the signal recognizability can be prevented from being lowered.

Abstract: An optical transmission module includes: a substrate; an electric wiring section that is provided on the substrate; a photoelectric element that are mounted on the electric wiring section, and that emits an optical signal on the basis of a received electric signal or transmits an electric signal on the basis of a received optical signal; an optical part that comprises at least one of an optical conversion section and an optical fiber receptacle section, and that controls an optical path of optical signal between the photoelectric element and an optical fiber; a mounting support member that positions the photoelectric element; and a positioning mechanism that positions the optical part and the mounting support member.

Abstract: An optical bus 30 optically connects each board of a signal processing section 22 and each board of a transmission/reception section 40 for transmitting an optical signal output to the optical bus 30 by each board of the signal processing section 22 to each board of the transmission/reception section 40 in a non-block state. In contrast, the optical bus 30 transmits an optical signal output to the optical bus 30 by each board of the transmission/reception section 40 to each board of the signal processing section 22 in a non-block state.

Abstract: An optical distribution module includes at least one light emitting element that converts an optical signal to an electrical signal, at least one light receiving element that converts the optical signal to the electrical signal, and a distribution circuit that is arranged so as to optically couple the light emitting element and the light receiving element. The distribution circuit branches or couples the optical signal from the light emitting element so as to emit the optical signal to the light receiving element.

Abstract: An information processing system includes a host device, a storage device and a bus. The bus transmits data to which an error correction code is appended, between the host device and the storage device. The storage device includes a storage section that stores the data. The storage device writes and reads the data received from the bus to and from the storage section with the error correction code appended to the data.

Abstract: A signal communication apparatus includes a transmission component, a reception component and an identification information storage component. The transmission component is connectable to an information processing device and a signal propagation medium, and transmits an inputted image signal through the connected signal propagation medium. The reception component is connectable with an image display device and the signal propagation medium, receives the image signal transmitted from the transmission component through the connected signal propagation medium, and outputs the image signal to the connected image display device. The identification information storage component is removably attached to the transmission component, and stores identification information for identifying the image display device.

Abstract: In an optical wiring board, an optical components including a planar optical waveguide, a plurality of first optical fibers optically connected via a transmissive diffusion plate to a light incident face of the waveguide, and a plurality of second optical fibers optically connected to a light emitting face of the waveguide is placed on a support board. The optical component is sealed by a sealing member made of a resin.

Abstract: A light emitting element driving circuit includes: plural AC-coupling capacitors which are connected together in series; and a bias generating circuit which generates a bias current, wherein a light emitting element is driven by superposing a modulating current to the bias current via the plural AC-coupling capacitors.

Abstract: An optical distributor includes an optical-signal input port, a light receiving device, a light emitting device, a light splitter, and optical signal output ports. The light receiving device converts an optical light signal input to the optical-signal input port into an electric signal. The light emitting device converts the electric signal into an optical signal. The optical splitter 14 splits the converted optical signal into two optical signals. The optical-signal output ports output the split optical signals. The light receiving device includes a light receiving element, a pre-amplifier, and a limiting amplifier. The light emitting device includes a light-source drive element and a light emitting element.

Abstract: The present invention provides a method for reducing propagation errors in an optical communication system which includes an optical element and an optical transmission medium. In the present invention, a relative position of the optical element and an end face of the optical transmission medium, at which light emitted from the optical element is incident, is set to a (relative) position which is different from a relative position of the optical element and the end face of the optical transmission medium with which energy of light that is propagated is maximized. Then, light emitted from the optical element is propagated in multimode by the optical transmission medium.

Abstract: In a device of the present invention for allowing signal light to enter a light guide body using an optical fiber, a light guide body, which is constituted by dispersing particles for scattering the signal light in an optical medium, is selected as a light guide path which requires an area where a light diffusing function is performed just after incidence of the signal light. An optical connecting material intervenes between one end of the optical fiber from which the signal light is output and opposed one end surface of a particle dispersing light guide body and a desired diffusing function is obtained.