Abstract: A packaging bag is formed by bending a laminate film at two portions in parallel to each other such that both end portions thereof are mated to each other and the mated end portions are bonded together so as to provide a tubular body having upper and lower openings, which are sealed by forming upper and lower seal portions, respectively.

Abstract: The present invention relates to a roller type linear guideway which comprises the rail, the slide block, the roller-model, the recirculating-model, and the ender cap. The recirculating-model is make up of two half recirculating-models which are assembled together at a specific angle, and each of the half recirculating-models comprises two U-shaped recirculating piece which includes a return portion, a supporting portion and a reflow portion, the recirculating paths of the roller-models intersect to form a x-type turn. Therefore, there are no a lot of accessories, that can reduce time of fabrication and can save the cost of manufacture.

Abstract: A linear guide device having an appropriate length of a loaded rolling element rolling groove capable of stably suppressing rolling element passage vibrations is provided.

Abstract: This invention is to provide a hydrodynamic bearing assembly, which realizes the high rotation rate in a stable manner and the robust rigidity. The hydrodynamic bearing assembly has a total radial gap of 3 microns or less for preventing the contact in the thrust bearing. The thrust bearing is a pomp-out type one, and the radial bearing has offset grooves on the surface thereof to supply the fluid flow sufficiently to the thrust bearing. The grooves also eliminate a half-whirl. A depth ratio relative to the diameter of bearing is preferably 0.005 or less to avoid the reduced translation rigidity. The radial gap is smoothly enlarged from the center to both ends along the axis, and the shaft is biased to incline the shaft relative to the sleeve, so that the shaft can be rotated with the robust rigidity. Also, a pair of the thrust bearings is provided on both ends of the radial bearing so as to realize the robust rigidity.

Abstract: The mutual difference of the diameters of the balls 17, 17 incorporated into a bearing unit for supporting a wheel is set to be not more than 1.5 ?m (preferably to be not more than 1.0 ?m). Finishing work is conducted on both sides of the disk 2 under the condition that the bearing unit for supporting a wheel is assembled and further this disk 2 is attached to the attaching flange 13 of the bearing unit for supporting a wheel. Due to the foregoing, the whirl of the hub 8 with respect to the outer ring 6 caused by the revolution of the balls 17, 17 can be suppressed, and at the same time an influence of the error of each portion can be eliminated. Therefore, the deflection of both sides 24, 24 of the disk 2 can be suppressed to be a sufficiently low value of not more than 35 ?m (preferably not more than 25 ?m).

Abstract: The present invention discloses an interferometer optical switch that can carry out switching over a broad band and has a high extinction ratio and large fabrication tolerance. The interferometer optical switch employs a phase generating coupler, the phase difference of the output of which has wavelength dependence, as at least one of the optical multi/demultiplexing device included in the interferometer optical switch. A wavelength insensitive interferometer optical switch is implemented by making the sum 2?{?1(?)+??L(?)+?2(?)} constant regardless of the wavelength, where ?1(?) is the phase produced by the first optical multi/demultiplexing device, 2???L(?) is the phase difference of the optical delay line with an optical path length difference of ?L, and 2??2(?) is the phase produced by the second optical multi/demultiplexing device.

Abstract: The present invention provides an optical transmitter that compensates the thermal tracking error. The transmitter comprises a temperature feedback loop including temperature controller that controls the temperature of the laser diode to coincide with the reference temperature by the thermo-electric device. The reference temperature reflects the thermal tracking error that depends on the ambient temperature and that of the target temperature of the laser diode. The transmitter installs a lookup table for providing the reference temperature. The lookup table is rewritten taking the long-term deterioration of the laser diode into account, which is reflected in the increase of the bias current and the forward voltage of the laser diode.

Abstract: A pressure sensor includes an optical transmitter transmitting a dispersive light toward two optical receivers, all carried in a housing. Pressure changes on the housing cause the light beam to be deflected with the amount of deflection measured by the difference in light received by each of the two receivers. A processor operable with the receivers provides a pressure measurement responsive to the light beam deflection.

Abstract: A fiber optics position transducer is described (100) for flow control valve in smart wells, which comprises at least two load cells (10) instrumented with Bragg (FGB) network sensors and supported by rings (20a, 20b). The cell (10) is formed by a quadrangular body (11), provided with a central hole (12) and hole (13a/13b) for inlet/outlet and passage of a fiber optic (14) and pins (14a, 14b). Said cell (10) measures the displacement of a spring used in the sliding sleeve, rotating or choke type valve from the smart completion system, the displacement (opening or closing) of the valve being monitored from the restoration force in the spring measured by the instrumented load cell (10). The transducer (100) is built with dimensions and geometry so as not to present edges and allow the insertion of the same in the annular space of a sliding sleeve, rotating or choke type valve of an oil production system.

Abstract: A micro mirror and a method of manufacturing the same are provided. The micro mirror includes a silicon substrate having a first slant plane and a second slant plane that face each other, and a clad layer including a first mirror surface and a second mirror surface respectively formed on the first slant plane and the second slant plane, wherein the clad layer reflects light.

Abstract: An electronic circuit board having an optical wiring layer sandwiched between two electrical wiring layers. The optical wiring layer is structured to be a two-dimensional optical waveguide. An E/O device and an O/E device are provided in the optical wiring layer or at an interface between the optical wiring layer and the electrical wiring layer. A via piercing the optical wiring layer connects the two electrical wiring layers. It is possible to efficiently input and output light to and from an optical wiring layer.

Abstract: In a wavelength selecting optical switch, a shutter is situated near an incident position, which is a position at which the light falls onto the mirrors, and has a plurality of blocking members that prevent or allow light to be incident onto respective mirrors. Moreover, a control unit controls a blocking member corresponding to a mirror of which an angle is to be changed so that the blocking member prevents the light to be incident onto the corresponding mirror.

Abstract: An apparatus for directing a light path sequentially between multiple positions. A rotary switch rotates a light beam from a prism relative to a plurality of optical elements arranged radially on a switch body. In one embodiment, a prism rotates in the switch body, causing the light beam to sweep through the optical elements. In another embodiment, the switch body rotates about a prism transmitting the light beam. In various embodiments, the optical elements include a photodetector, a filter and a photodetector pair, a reflector, and a filter and a reflector.

Abstract: The present invention provides a memory element for providing compatibility information and/or parametric data about a scanning beam device to a universal base station. The present invention provides a memory coupled to the scanning beam device that provides parametric data, such as an identifier code, compatibility information, and other characteristics of the scanning beam device that is coupled to the universal base station. A controller of the base station may use the parametric data to configure or generate a control routine so as to allow the base station to properly operate the device.

Abstract: A transverse closed-loop fiber resonator (10) includes an inner cladding (102) having a surface (300) peripherally forming a closed-loop shape for confining light to the surface (300). The inner cladding has a first diameter thickness (104) and a first index of refraction profile in a cross-sectional portion of the transverse closed-loop fiber resonator (10). A ringed-core (120) corresponding to the closed-loop shape is disposed on the corresponding surface of the inner cladding (102). The ringed-core (120) has a second thickness (124) of material thinner than the first diameter thickness (104), and a second index of refraction profile greater than the first index of the inner cladding by an index delta in the cross-sectional portion of the transverse closed-loop fiber resonator such that the ringed-core can guide light within the ringed-core traversely around the closed-loop shape.

Abstract: The optical signal receiver of this invention is an optical signal receiver that receives and frequency-demodulates an optical signal, comprising: an optical branch device for splitting an input optical signal into two optical signals (13); an optical delay line for delaying one of the two branched optical signals (15); a first photoelectric conversion circuit (17) for converting the optical signal from the optical delay line into the first electrical signal (17); a second photoelectric conversion circuit (19) for converting the other optical signal of the two branched optical signals into a second electrical signal; the rectangular-wave forming circuit (21, 23, 25) for outputting a single rectangular-wave signal using the first electrical signal from the first photoelectric conversion circuit and the second electrical signal from the second photoelectric conversion circuit as inputs; and a smoothing circuit (12) for smoothing the rectangular-wave signal from the rectangular-wave forming circuit.

Abstract: The present invention is to provide a beam homogenizer, a laser irradiation apparatus, and a method for manufacturing a semiconductor device, which can suppress the loss of a laser beam and form a beam spot having homogeneous energy distribution constantly on an irradiation surface without being affected by beam parameters of a laser beam. A deflector is provided at an entrance of an optical waveguide or a light pipe used for homogenizing a laser beam emitted from a laser oscillator. A pair of reflection planes of the deflector is provided so as to have a tilt angle to an optical axis of the laser beam, whereby the entrance of the optical waveguide or the light pipe is expanded. Accordingly, the loss of the laser beam can be suppressed. Moreover, by providing an angle adjusting mechanism to the deflector, a beam spot having homogeneous energy distribution can be formed at an exit of the optical waveguide.

Abstract: An optical connector (10) comprises at least one optical guide (12) for carrying optical radiations; a total internal reflection surface (11) upon which, in use, said radiations impinge, so that the radiation in the optical guide is reflected by said surface towards an optical element (14) of the connector and means enabling the connector (10) to interlock with any other optical connector which is appropriately matingly configured.

Abstract: Disclosed is a method for polishing a multi-fiber ferrule assembly and the optical fibers protruding from the ferrule using at least one particle loaded film, at least one slurry, and at least one flocking film.

Abstract: A composite cable assembly comprises optical fiber and metal wire, having a composite connector at each end of the cable. The connector houses the optical fiber at its core, with an elongated cylinder protruding from a protective grip forming an insertion guide and functioning as an electrical conductor. An opto-electro adaptor has an open passageway for connector insertion, an optical device at the end of the passageway, an elongated cylinder as insertion guide and electrical conductor, a sheet metal as electrically conductive element.

Abstract: An opto-electronic transceiver having: a transmitting component for converting electrical signals into optical signals; a first circuitry module for the transmitting component; a receiving component for converting optical signals into electrical signals; a second circuitry module for the receiving component; a printed circuitboard with conductor tracks, on which the transmitting component, the receiving component, the first circuitry module and the second circuitry module are arranged; and a transceiver housing including a nonconductive material and has a connector receptacle for receiving and coupling an optical connector.

Abstract: The optical communication module can be coupled to at least one optical fiber and includes at least one optoelectronic device, a base portion, and a cover portion which can be connected to the base portion to define an internal chamber to house the optoelectronic device. The cover portion includes at least one window to couple at least one optical signal between the at least one device and the optical fiber. The module further includes a plate, substantially transparent to the optical signal, having a first side facing the cover portion and a second side facing the internal chamber, the first plate substantially enabling sealing of the window. A shielding plate can be connected to the second side and provided with at least one opening substantially aligned with the window to enable passage of the optical signal.

Abstract: An optical module comprising an opto-electronic component, a lens and a mirror that is hermetically sealed by a micro housing containing a lid and a base is disclosed. The optical module may be assembled onto a moveable holder for aligning an optical beam into an optical assembly having an optical waveguide.

Abstract: To provide an optical fiber splicing member which can hold optical fiber buffer coatings stably in a simple structure as compared with conventional art, and which enables use of an existing splicing tool. There are provided a joint element (110), a jacket (120), buffer retainers (131) and a cap (140). By setting and pressing the cap to the jacket, it becomes possible to splice bare fibers of optical fibers (190) with each other by the joint element and to press the buffer coatings (192) by the buffer retainers. Assembling the splicing member is thus facilitated while the existing optical fiber splicing tool is utilizable as it is. The buffer coatings can be held stably because the holding is achieved through the pressing.

Abstract: A piping unit and method for efficiently arranging a plurality of optical fibers in a communication system. The piping unit includes an elongate tube having a plurality of parallel longitudinal cavities extending the length of the tube. The longitudinal cavities have a circular transverse cross-section, while the tube preferably has an approximately square transverse cross-section. Each of the longitudinal cavities is sized to mount an optical fiber within the cavity extending the length of the elongate tube. The longitudinal cavities are arranged to maximize the number of optical fibers that are mounted within the cross-section of the elongate tube. In a square tube, the cavities may be mounted in rows and columns parallel to the sides of the tube.

Abstract: Disclosed is a loose tube optical cable, which includes at most four cable aggregation units longitudinally twisted in contact with a central tensile member and having a loose tube optical fiber unit or inclusion, a cable coating for longitudinally surrounding a cable core aggregation having the central tensile member and the cable aggregation units, and one selected from the group consisting of a fibered tension-reinforcing member for surrounding the cable core aggregation, a wired tension-reinforcing member and a ring-shaped tension-reinforcing member formed in the cable coating. This loose tube optical cable has a compact structure by excluding unnecessary inclusion, thereby decreasing the outer diameter and the weight thereof. In addition, since the central tensile member and the tension-reinforcing member are not twisted with the cable aggregation units, tensile stress may be minimized in the optical cable.

Abstract: A fiber optic sensor for measuring static pressure includes a cartridge housing having an end that is exposed to the atmosphere, a thin flexible membrane covering the exposed end of the cartridge housing such that the flexible membrane has an exposed side and a protected side, and a fiber bundle disposed within the cartridge housing, the fiber bundle comprising at least one fiber having a first polished end for transmitting light toward the membrane and a second end for being coupled to a light source or a receiver, the housing arranged to maintain the membrane at a distance from the first end of the fiber in a direction along a fiber axis, with free space between the first fiber end and the protected side of the flexible membrane.

Abstract: A multiplexed fiber optic sensor system including a first optical fiber having a first end arranged to receive light from a light souce, at least two optical fibers having diameters smaller than the first optical fiber, and at least two fiber optic sensors, each of the at least two smaller diameter optical fibers arranged between the first optical fiber and one of the sensors for transmitting light from the first optical fiber to that sensor. The sensors can be static or dynamic pressure sensors, strain sensors, temperature sensors or other environmental sensors.

Abstract: An optical fiber having an internal glass portion, a first coating layer surrounding the glass portion and a second coating layer surrounding the first coating layer. The first coating layer is formed from a cured polymeric material obtained by curing a radiation curable composition having a radiation curable oligomer having a backbone derived from polypropylene glycol and a dimer acid based polyester polyol. The cured polymeric material has: (a) a hardening temperature (Th) from ?10° C. to about ?20° C. and a modulus measured at the Th lower than 5.0 MPa; or (b) a hardening temperature (Th) from ?20° C. to about ?30° C. and a modulus measured at the Th lower than 20.0 MPa; or (c) a hardening temperature (Th) lower than about ?30° C. and a modulus measured at the Th lower than 70.0 MPa.

Abstract: A resin coated optical fiber 1 comprising a bare optical fiber 2 and sequentially provided on its circumference with a primary coating layer 3a and a secondary coating layer 3b both made of an ultaviolet-curing urethane resin. The primary coating layer 3a and the secondary coating layer 3b have respective thicknesses of 60 to 200 ?m and 20 to 300 ?m. The pulling force for simultaneously removing the primary and secondary coating layers 3a and 3b is 100 gf or less. The primary coating layer 3a has a tensile strength of 0.5 to 1 MPa. The primary coating layer 3a after immersed in a solvent has a swelling ratio of 5 to 150%. The secondary coating layer 3b has a Young's modulus of 100 to 1,500 MPa. This resin coated optical fiber allows its coatings to be removed without deteriorating the strength or other properties of the bare optical fiber and without leaving any coating waste on the surface of the bare optical fiber after the coatings were removed.

Abstract: Disclosed herein is a method of manufacturing a mold for patterning a lower cladding layer of a wavelength filter, which includes a) etching a substrate to form a grating pattern on the substrate; b) preparing an etching mask for an optical waveguide pattern and then etching the substrate using the etching mask; and c) removing the etching mask. In addition, a method of manufacturing a waveguide-type wavelength filter is also provided, including a) applying a lower cladding layer on a substrate; b) patterning the lower cladding layer, using the mold; c) setting the pattern of the mold in the lower cladding layer and then removing the mold; and d) sequentially forming a core layer and an upper cladding layer.

Abstract: The present invention relates to an arrangement and a method for flexible installation of an optical patch cable PC1 in a telecommunication station TS between equipment AE4, AE7 in the station. The arrangement comprises a micro duct 1 for guidance of the patch cable. The duct have duct end openings E4, E7 related to the equipment.

Abstract: In a method for producing a termination of an optical fiber bundle, the optical fiber bundle is combined at one end in a crimping sleeve, and the crimping sleeve is introduced with the end of the optical fiber bundle into a compression device having a crimping tool which matches the end geometry of the optical fiber bundle. Advantageous effects are achieved by the fact that the crimping sleeve is compression molded over the end of the optical fiber bundle with a predetermined crimping force by the crimping tool, and in that the crimping force is regulated during the compression molding process depending on the material of the crimping sleeve. In this case, the compression molding process is begun, carried out and ended depending on the distance, time and/or force by a regulating unit.

Abstract: An optical test apparatus. The test apparatus includes an optical source. A first optical switch is connected to the optical source. An attenuated responsivity test path may be selectively coupled to the first optical switch. A return loss test path may alternatively be selectively coupled to the first optical switch. A second optical switch may be selectively coupled to the attenuated responsivity test path or the return loss test path. An optical splitter is connected to the second optical switch. The optical splitter is configured to connect to a ROSA. A detector is connected to the optical splitter. The detector is configured to connect to a test meter.

Abstract: In a recording system in which a DSC and PD printer are directly connected via a communication interface, and image data is transmitted from the DSC to the PD printer and recorded, it is determined whether predetermined status information is received from the PD printer within a predetermined time period after the DSC issues a predetermined command to the PD printer. If it is determined that the predetermined status information is not received, the status is determined to be one estimated from a normal process, and a process continues. To confirm the status of the PD printer, the DSC requests status information of the PD printer, and acquires the status of the PD printer on the basis of the status information sent back in response to the request.

Abstract: A CPU obtains select information from a flash memory. The CPU provides a reproduction instruction for reproducing only data selected according to the select information. The decoder unit reproduces data in response to a reproduction instruction, and provides a reproduction result. When the reproduction result indicates non-reproducibility, the CPU changes the select information. The data indicated as non-reproducible data is no longer reproduced in subsequent reproducing operations, and only the reproducible data will be reproduced. Therefore, it is possible to provide a data reproducing device that can read and reproduce only the correctly reproducible data from the data recorded on a record medium.

Abstract: A method for the management of the recording of an audio/video stream within a communications network comprises a step for setting up a first recording connection between a source device and a recording device connected to said communications network. The step for setting up the first recording connection is followed by a step for setting up a second viewing connection between the recording device and a display device also connected to the network, so that a user can observe an audio/video image corresponding to the audio/video stream, on said display device, while the stream is being recorded by the recording device.

Abstract: On the basis of an information managing database configured to store information on a plurality of multimedia contents stored by a content memory of an information reproducing apparatus and information on multimedia contents stored by an information memory of an information managing apparatus, a content managing unit of the information managing apparatus extracts from the information memory contents acquired by the information reproducing apparatus that are types reproducible by a content reproducing unit of the information reproducing apparatus but that are not stored in the content memory of the information reproducing apparatus from among the contents stored in the information memory, and transmits to the information reproducing apparatus all of the extracted contents or a part of contents which is selected by user from among the extracted contents.

Abstract: A disc recording device has a mode control unit (31) for switching the device either to a read mode or to a write mode. Reading and writing can be alternated for simultaneous recording and reproducing of video. A rotation speed control unit (37) sets the rotation speed of the record carrier, and has a speed selector (38) for selecting one of at least two speed settings for the read mode in dependence on an actual rotation speed of the record carrier during the write mode when switching from write mode to read mode. By setting the read speed to one of a limited number of settings the difference in rotation speed between said actual rotation speed and the speed in the read mode is limited. Due to the limited differences power dissipation is limited, while the performance of access time and playability of real-life discs is at a high level.

Abstract: State-of-the art video recorders are equipped with a pause function. This function may be used in the play and record mode. When used in the record mode, no data is recorded. This is all right when only audio and/or video are recorded. However, when other data like interactive applications are recorded as well, this may lead to problems when the recording of an application is interrupted and this application is called upon in a video fragment that is recorded after resuming recording of audio and/or video. The invention has the following object. When the record function is suspended, using a pause function, only recording of audio and/or video is suspended and recording of other data is continued.

Abstract: The present invention provides a recording and reproducing apparatus for recording and reproducing any of video data, audio data, and realtime metadata corresponding to any of the video data and the audio data by use of a random-accessible recording medium. The recording and reproducing apparatus executes destructive editing on any of video data, audio data, and realtime metadata corresponding to any of the video data and the audio data recorded on the random-accessible recording medium on the recording medium.

Abstract: The invention relates to a method of recording a program comprised in a television signal. A television signal comprises program information including the real starting hour of at least a following program. The method comprises the steps of: —memorizing a theoretical starting hour of the program to be recorded (30);—defining, among the following programs, a retained program satisfying a criterion of concordance relating to at least the memorized theoretical starting hour of the program to be recorded and the real starting hour of the subsequent program included in the program information comprised in the television signal (32); and—recording the television signal on the basis of the real starting hour of the retained program (34).

Abstract: A system and method for storing, within an image transfer medium, an image and image-specific data associated with the image includes obtaining the image-specific data from a probe such as a borescope or endoscope, obtaining the corresponding image, choosing a specific image transfer medium, writing the image to the medium, and writing the image-specific data to a marker in the medium. In this manner, storing a combination of image data and one or more of system calibration data, overlay replacement data, and audio comment data in a single file of either a non-standard file format or a standard file format that does not explicitly support the inclusion of these data types is possible.

Abstract: The invention relates to an information carrier (101) intended to be put into a rotary motion, said information carrier (101) comprising: display means (102) designed to display image data, said display means (102) being spatially located by a spatial position, processing means (103) for periodically sending to said display means (102) image data having the same spatial position as said display means (102).

Abstract: The invention relates to an apparatus for recording a main file comprising a main information signal and auxiliary files comprising auxiliary signals in a track on a record carrier. The apparatus writes in a first location a block of an auxiliary file comprising a part of an auxiliary information signal having a specific presentation time, in a second location a subsequent block of the corresponding auxiliary file and in at least one location between the first and second location at least one block of the main file comprising a part of the main information signal having a presentation time which corresponds to the presentation time of the auxiliary information signal to be written in the first location. In this way the respective files are interleaved written on the record carrier such that the jumping time between subsequent read actions is significantly reduced. This results in an increase of the effective read bit-rate of a playback device.

Abstract: A method is described for recording an audiovisual information stream comprising a background sound stream (2), a background graphics stream (3), an optional original sound stream (20) containing original spoken text, at least one optional translation sound stream (21, 22) containing spoken text in different languages, and at least one optional subtitle picture stream (30, 31, 32) containing subtitles. A first information stream (140) is recorded which contains the background sound stream (2), and a second information stream (15) is recorded which contains the background graphics stream (3). The optional translation sound streams (21, 22) are each recorded as individual elementary audio files (142, 143; 242, 243; 342, 343) separate from the first and second information streams, and the optional subtitle graphics streams (30, 31, 32) are each recorded as individual elementary graphics streams (151, 152, 153; 351, 352, 353) separate from the first and second information streams.

Abstract: An information record medium contains video information indicating main-video, sub-video information indicating sub-video which can be displayed at least partially over the main-video, and sub-video control information. The sub-video control information includes (i) sub-frame range information specifying at least a part of the region in the sub-video as a sub-frame and (ii) shadow display control information for selectively adding a shadow to a sub-video portion in the sub-frame according to an alpha value indicating the transparency in the sub-video portion and displaying the sub-video portion to which the shadow is added over the main-video.

Abstract: A digital video disc (DVD) recording device including an interface for communicating between the DVD recording device and a host, an error detection code (EDC) generator receiving data sent directly from the interface and generating a data frame by adding an EDC to the data, and a scrambler for scrambling the data frame sent directly from the EDC generator.

Abstract: The present invention describes an optical storage controller with serial transmission. The controller is used as the signal transmission between an optical disk controller and a MPEG decoder to enhance the transmission rate. Therein a sharing memory is adopted to save memory usage. The optical storage controller couples with the MPEG decoder using a serial ATA interface, and they share the same sharing memory.

Abstract: The following video reproduction device is provided that is intended so that when recorded video data is reproduced from a recording medium, videos not giving a feeling of discomfort to a user can be viewed by first acquiring display rate information processable by a display apparatus, then displaying the display rate information without conducting an unnecessary display rate conversion process, and reproducing the internal video data of the recording medium intact in an original format: The video reproduction device has an information acquisition unit for acquiring display rate information processable by the display apparatus, and during reproduction of internal video data from the recording medium, the information acquisition unit acquires the display rate information acquired within the display apparatus.