Abstract: The present invention aims to provide a sensor cover capable of avoiding a pulser ring from being damaged by the sensor cover with excellent positional accuracy relative to the pulser ring or the like. The present invention provides a rolling bearing apparatus having a structure in which whereas an outer peripheral edge of a sensor main body 38 of a sensor cover 37 is folded to bend to an inner side of a bearing and a conical portion 39a as a fitting portion is formed at a folded to bend portion 39 thereof, a conical portion 40a as a fitted portion for fitting the fitting portion is formed at an inner peripheral surface 40 of an outer ring 31 and a position in an axial direction of the sensor cover 37 relative to a is pulser ring 15 is set to position by fitting the two conical portions.

Abstract: In a throttle valve device for an internal combustion engine, a stepped portion is formed on an outer peripheral surface of an inner ring on a bore side (on an air intake passage side) in order to limit movement of a lip portion of a first lip seal on the bore side toward an inside of a rolling bearing. Thus, even if a high supercharging pressure above an atmospheric pressure acts on the first lip seal, deformation and curling of the lip portion due to the supercharging pressure can be prevented. As a result, separation of a second lip seal on a gear cover side (on an outside) from the rolling bearing can be prevented.

Abstract: The present invention provides a rolling element capable of ensuring excellent corrosion resistance, and capable of maintaining a stable performance for a long time even in a case where a slight amount of a solution intrudes into the inside, with no occurrence of dry friction and the like between a rolling element and a raceway groove.

Abstract: A transmission component is incorporated into a transmission in which an input shaft, an output shaft, or a gear is rotatably supported by a rolling bearing. The component has a nitriding layer at a surface layer and an austenite grain with a grain size number falling within a range exceeding 10. This provides a transmission component having an increased anti-crack strength, enhanced dimensional stability, and a long fatigue life. A method of manufacturing such a transmission component and a tapered roller bearing are also provided.

Abstract: It is intended to suppress rattling in the fitted state of segments to improve operating efficiency in bonding the segments together.

Abstract: An improved bearing assembly (5) especially suitable for supporting a rotating shaft (2) or similar component which is subjected to a symmetrical or irregular loading; the bearing assembly (5) includes at least two coaxial rolling type bearings (6, 7) each of which is provided with one or more mounting seals (9, 10); each seal (9, 10) is a ring of resilient material arranged to contact the external circumference of the bearing (6, 7) so that each bearing (6, 7) is mounted upon the corresponding seal or seals (9, 10).

Abstract: An optical modulator for modulating light with an electrical signal, the modulator comprising: an optical cavity, for enhancing an optical field of said light in a first mode, an electrical input for receiving an electrical signal, a transformer associated with said cavity and with said electrical input for transforming light within said optical field into a second mode substantially orthogonal to said first mode, in accordance with said electrical signal, and an selective output coupler associated with said optical cavity, to couple said second mode to an output, thereby to provide, at said output, light modulated in accordance with said electrical signal. Also disclosed is an internally modulated laser.

Abstract: A photonic crystal includes a phosphor matrix and a plurality of defect regions. The phosphor matrix defines a plurality of substantially spherical voids arranged in a triangular lattice arrangement. The phosphor matrix has a first index of refraction. The plurality of defect regions is distributed in a subset of the spherical voids. Each defect region has a second index of refraction that is different from the first index of refraction.

Abstract: An optical module is provided in which the angles of the optical fibers to be inclined with respect to the planar microlens array may be regulated at the same time when respective optical axes of the microlenses and respective optical fibers are passively aligned. The optical module of the present invention comprises a planar microlens array having a plurality of microlenses formed in one surface thereof, a planar fitting transparent substrate having a plurality of micro fitting recesses formed in one surface thereof, a planar first guide plate having a plurality of micro guide holes opened therethrough, a planar second guide plate having a plurality of micro guide holes opened therethrough, and a plurality of optical fibers each end thereof having a micro fitting convex portion.

Abstract: A single free-beam region for coupling electromagnetic radiation in and out is provided in order in the case of an AWG coupler for spectrally separating electromagnetic radiation to achieve a more stable thermal characteristic and a space-saving layout.

Abstract: An arrayed-waveguide grating type optical multi-demultiplexer includes input waveguides, a first slab waveguide, a channel waveguide array, a second slab waveguide, and output waveguides. A pair of different refractive index regions, each having a refractive index different from that of the second slab waveguide, are formed on the second slab waveguide near a boundary between the second slab waveguide and channel waveguide array. The different refractive index regions project in peninsular shapes from both side portions of the slab waveguide. Light traveling from each waveguide of the channel waveguide array toward the output waveguides passes through the different refractive index regions. An optical distribution with a flattened field-distribution peak is created at a boundary between the second slab waveguide and output waveguides.

Abstract: An optical apparatus (spectral filter, temporal encoder, or other) comprises a planar optical waveguide having at least one set of diffractive elements. Each diffractive element set routes by diffraction therefrom a portion of the optical signal propagating in the planar waveguide. The planar waveguide includes at least one material having thermo-optic properties chosen so as to yield a designed temperature dependence of spectral and/or temporal characteristics of the diffracted portion of the optical signal. Variations of material refractive indices, physical dimensions, and/or optical mode distributions with temperature may at least partly compensate one another to yield the designed temperature dependence. Optical materials with ∂n/∂T of various magnitudes and signs may be variously incorporated into the waveguide core and/or cladding.

Abstract: An end face 7a of an optical fiber 7 and an end face 8a of an optical fiber 8 are arranged so as to have a predetermined interval and to oppose each other in a V-groove 23 of a base 21. A solution 27 including particles used as a material of the photonic crystal is dropped into a space section 25 which is formed by the end face 7a, the end face 8a, and the V-groove 23. Accordingly, by growing the photonic crystal from each of the end face 7a and the end face 8a, the optical control section including the photonic crystal 2 is formed on each of the end face 7a and the end face 8a.

Abstract: An optical fiber coupler is comprised of a fusion-elongated portion 15 in which an optical fiber 11 which is designed and fabricated for use at a wavelength in the vicinity of 1.55 &mgr;m and an optical fiber 12 which is designed and fabricated for use at a wavelength in the vicinity of 0.98 &mgr;m are fused and elongated. The propagation constant difference between optical fibers 11 and 12 is 10−4 rad/&mgr;m or smaller.

Abstract: A plurality of n light sources are coupled to an optoelectronic module by first coupling a light detector to an optical output port of the optoelectronic module after the module is attached to a carrier member. The plurality of n light sources are sequentially moved adjacent a separate one of a plurality of n optical input ports of the optoelectronic module while pulsing the light source being moved with a low power signal sufficient to prevent failure of the light source. Each light source is permanently affixed adjacent the associated separate one of the n optical input ports when a maximum light intensity signal propagating through the optoelectronic module from that light source is detected by the light detector. A heat dissipating means is attached to a base of the carrier member capable of removing sufficient heat from the n radiation sources and the module to prevent overheating during normal operation thereof.

Abstract: An alignment system that uses a single optical sensor to enable the end of an optical fiber to be aligned with the input of an optical waveguide of an optical device. In accordance with the present invention, it has been determined that the output of a single optical sensor can be processed and converted into digital signals, which are then further processed in accordance with an alignment algorithm to generate feedback signals that enable precise alignment to be achieved. The alignment system includes the single optical sensor, a lens and processing logic.

Abstract: The present invention provides a multi fiber optical ferrule, a tool for forming the ferrule, and a method of making the ferrule. The multi fiber optical ferrule is formed of two ferrule halves which are either molded or cast as imprecise blanks which are machined using a broach in order to precisely cut inner surfaces thereof for receiving an array of fibers. The inner surfaces of a pair of ferrule halves are cut simultaneously in order to assure accuracy in the fiber receiving and pin receiving channels. The halves are joined together with a fiber array placed therebetween to form the ferrule.

Abstract: With the present invention, alignment and fixing of an optical fiber in front of a transmitter and/or receiver in an optical module is attained by an arrangement. The arrangement includes an alignment element (1) with groove (4) for an optical fiber (8) arranged on the top side and with fastening means (5A, 5B) arranged in pairs on the sides, and a u-shaped clamp (2) with adapted fastening means (7). During execution of the method for alignment of the optical fiber, the fiber is positioned in the groove (4) and the clamp (2) is depressed on the alignment element (1), whereby the fastening means (7) arranged on the clamp (2) engages the fastening means (5A, 5B) arranged on the alignment element (1) and the clamp (2) is fastened on the alignment element (1) and the optical fiber (8) is aligned and fixated in the groove (4).

Abstract: An industrial robot has a structure comprising

Abstract: A fiber optic ribbon having a first subunit and a second subunit. The first and second subunits including a plurality of respective optical fibers being connected by respective primary matrices. The first and second subunits being generally aligned along a plane with a secondary matrix contacting portions of the first and second subunits. The secondary matrix having at least one end portion and at least one medial portion. The at least one medial portion and the at least one end portion of the secondary matrix are separated by a gap along at least a portion of the longitudinal axis, thereby defining a preferential tear portion. In other embodiments, the at least one medial portion is recessed relative to the at least one end portion.

Abstract: An object of the present invention is to provide an optical fiber manufacturing method and an optical fiber in which an increase in the transmission loss is suppressed by preventing hydroxyl group from entering near the core portion.

Abstract: An optical fiber has a zero dispersion wavelength in a wavelength range of 1350 to 1410 nanometers; a dispersion of 2 to 8 ps/nm/km at a wavelength of 1550 nanometers; a dispersion slope of a positive value and not more than 0.05 ps/nm2/km at a wavelength of 1550 nanometers; a transmission loss of not more than 0.4 dB/km at a wavelength of 1380 nanometers; an increase of transmission loss of not more than 0.04 dB/km at a wavelength of 1380 nanometers after a hydrogen aging test; a transmission loss of not more than 0.25 dB/km at a wavelength of 1550 nanometers; and a bending loss of not more than 30 dB/m when the optical fiber is wound at a diameter of 20 millimeters at a wavelength of 1550 nanometers.

Abstract: An optical fiber including a layer of primary coating material having a first modulus, a layer of color coating material having a second modulus, a layer of secondary coating having a third modulus, and wherein the first modulus, the second modulus, and the third modulus are different values.

Abstract: An integrated optical device includes a substrate, at least a face of the substrate providing a first cladding layer, the first cladding layer including a mesa formation; a waveguide core formed on the first cladding layer so that the waveguide core substantially covers the mesa formation; and a second cladding layer formed over the waveguide core and the first cladding layer.

Abstract: A retractable optical fiber assembly includes a housing, a spool rotatably disposed within the housing and an optical waveguide reeled onto the spool. The optical waveguide has a central length of unjacketed optical fiber and shorter end lengths of jacketed optical fiber terminating in optical connectors. The optical waveguide is reeled onto the spool such that the end lengths of jacketed optical fiber are extracted off the spool and retracted onto the spool in the same direction. The spool is biased in a first rotational direction relative to the housing by a torsion spring that exerts a retracting force on the jacketed optical fiber. A mechanical stop is also provided to prevent rotation of the spool in a second rotational direction opposite the first rotational direction. In an exemplary embodiment, the assembly is a test fiber box for use with optical test equipment to test an optical network.

Abstract: Sealing device for sealing a cable against a pipe or pipe branch characterized in that the sealing device comprises a tubular body which is connectable to a cable by electro-fusion at one side and which is attachable to a pipe or pipe branch at the opposite side.

Abstract: An optical cable and method of making the same, the optical cable being characterized by an axial symmetry and comprising a core, doped with phosphorescent or fluorescent impurities, and a transparent envelope. The transparent envelope comprises a cladding layer and optionally a jacket layer surrounding the cladding layer. The optical cable may further comprise an associated light source comprising an inner electrode, an outer electrode, and an active area, located between said inner electrode and said outer electrode. The light source and said optical cable are integrated as a unit. The light source is characterized by an axial symmetry and is positioned coaxial with respect to the axis of the optical cable. The inner electrode is substantially transparent, such that light generated in said active area may propagate outside said light source and into the optical cable.

Abstract: The invention relates to a device for connecting a first optical component to a second optical component, particularly for connecting the lamp housing of a spotlight to a lamp adapter. Said inventive device comprises a connecting ring (2) which comprises a first region (22) which rotatably secures the connecting ring (2) to the first optical component (1), and a second region (21) which is axially distanced from the first region (22) and enables the connecting ring (2) to be connected to the second optical component part (3). Said second region (21) comprises coupling means (25), which engage with corresponding coupling means (31, 31a) of the second optical component (3) by rotating the connecting ring (1). The invention enables two optical components to be connected in a fast, simple manner.

Abstract: A backlight unit is disclosed, in which the light is concentrated when the light is incident on a light-guiding plate so as to improve light efficiency and color realization ratio. The backlight unit includes a light source emitting light; and optical fiber surrounding the circumference of the light source so as to concentrate and emit the light emitted from the light source.

Abstract: A method and apparatus for converting different format content into one or more first common formats. This conversion method allows content that is received in multiple, different formats to be converted into one standard format for manufacturing and, optionally, into an Internet format rather quickly. This method allows the content to be available in both the production master and Internet formats nearly simultaneously. The converted Internet ready content file can be “bundled” with its associated metadata in another step and entered into a database.

Abstract: When a content title recorded on a storage medium is automatically deleted to secure a space for recording an additional title, deletion of the title can occur contrary to user's intention. Storage schedules for recorded content titles, especially the storage schedules concerning operations for the content titles are initialized, and a content title set to have no storage schedule is preferentially automatically deleted. Thus, the recorded content is not deleted contrary to the user's intention.

Abstract: An orthogonal demodulating section converts the frequency of received signals to the lower range in batch after rejecting an image band thereof by an RF filter. An image rejecting section rejects the image band of the orthogonally converted output. It allows an enough image rejecting degree to be obtained. An A/D converter section converts the whole range into a digital signal and an orthogonal demodulating section demodulates a desirable channel by means of digital processing. Then, a channel selecting section selects and outputs the desirable channel. It then allows wide-bands to be received in batch, flexible processing to be achieved by the digital processing and an enough image rejecting degree to be obtained.

Abstract: The data structure on the recording medium includes a navigation area storing an information file. The information file includes a first playback indicator that identifies a navigation command field for execution at first playback of the recording medium. The identified navigation command field is also stored on the recording medium, and the identified navigation command field includes at least one navigation command.

Abstract: Provided are a method to display a mark-up document according to a parental level, a method and an apparatus for reproducing AV data in an interactive mode, and a data storage medium. The data storage medium includes the AV data, and mark-up documents to reproduce the AV data in an interactive mode. Here, among the mark-up documents, a start-up document contains information on the mark-up documents to be displayed according to a set parental level.

Abstract: A hierarchical memory scheme capable of improving a hit rate for the segment containing the random access point rather than improving the overall hit rate of the cache, and a data playback scheme capable of automatically detecting positions that are potentially used as playback start indexes by the user and attaching indexes, are disclosed. The hierarchical storage device stores random access point segment information from which a possibility for each segment to contain a point that can potentially be random accessed in future can be estimated, and controls a selection of the selected segments to be stored in the cache storage device according to the random access point segment information.

Abstract: A video apparatus comprises an input switching matrix, to which a video input is coupled, the video input comprising a terminal for a component video signal and a CVBS terminal and/or a S-VHS terminal, a synchronization signal detector and a color decoder coupled to the input switching matrix, an output switching matrix coupled to the input switching matrix and to the color decoder, and a microcontroller coupled to the input switching matrix and to the synchronization signal detector for controlling the input switching matrix. The detection of the component video signal is made automatic by means of the microcontroller, the synchronization signal detector and the color decoder.

Abstract: An encoder transforms at least a portion of a signal, counts the resulting transform coefficients having a zero value, and encodes the signal with the zero count. A decoder decodes the signal in order to recover the zero count. The decoder may also determine its own zero count of the signal as received and may compare the zero count that it determines to the recovered zero count. The decoder may be arranged to detect compression/decompression based upon results from the comparison, and/or the decoder may be arranged to prevent use of a device based upon results from the comparison.

Abstract: Provided are a task-based hypervideo editing method and an apparatus which overcome problems of related art nonlinear editors, such as Adobe Premier, by providing a descriptor language which describes user's editing commands and suggesting an algorithm corresponding to the descriptor language. In the nonlinear video editing method, first, available user actions are initialized. Next, a user action is selected from the initialized available user actions. Thereafter, input resources used to perform the selected user action are selected. Then, the selected user action is performed, and the results of the user action are examined. Finally, finishing the user action is confirmed, and the results of the user action are rendered. Accordingly, results of previous steps in an editing process can be used as real source files and computer resources are saved, thereby shortening the time required and increasing the productivity of editing.

Abstract: Systems and methods for archiving real-time data are provided. Real-time data transport files can be transferred from a data store to an output data store for play back on digital devices, such as digital VCR and digital display devices. A synchronizer component facilitates the generation of real-time timestamps from a plurality of reference timestamps for recording the real-time data transport files onto the output data store via a digital recording device.

Abstract: The invention concerns a method (200) and system (100) for performing a trick mode on a video signal containing a plurality of original pictures. The invention includes the steps of, in response to a trick mode command, selectively repeating (216) at least one of the original pictures to convert the video signal to a trick mode video signal having the original pictures and at least one repeated original picture and selectively displaying (218) at least a portion of the original picture and at least a portion of the repeated original pictures in accordance with a predetermined sequence to avoid a vibration artifact. Each original picture and each repeated original picture can contain at least two fields.

Abstract: The invention enables the apparent display rate of an audiovisual display to be varied. The invention can modify an original set of audio data in accordance with a target display rate, then modify a related original set of video data to conform to the modifications made to the audio data set, such that the modified audio and video data sets are synchronized. When the modified audio and video data sets so produced are used to generate an audiovisual display, the audiovisual display has an apparent display rate that approximates the target display rate. The target display rate can be faster or slower than a normal display rate at which an audiovisual display system generates an audiovisual display from the original sets of audio and video data. The target display rate can be established solely by a user instruction, by analysis of the audiovisual data, or by modification of a user-specified nominal target display rate based upon analysis of the audiovisual data.

Abstract: An image processing apparatus generates playlist data based on a specified playback procedure, and generates date information of the playlist data based on date information regarding image data specified in the playlist data. The playlist data and the date information of the playlist data are recorded in association with each other on a recording medium.

Abstract: A time zone start time point calculating unit calculates a time zone to be set in a VOBU in accordance with audio bit rate. A time zone comparing unit compares a time point at which an audio pack is to be multiplexed with the time zone calculated by the time zone start time point calculating unit. A flag setting unit sets whether the audio pack is to be completed or not in accordance with the result of comparison by the time zone comparing unit. Therefore, a completing process takes place before a VOBU boundary, and a completed PCK will not be generated immediately after the VOBU boundary. Thus, generation of a buffer overflow can be prevented.

Abstract: A recording medium having data structures for managing random/shuffle reproduction of video data recorded thereon is disclosed. The recording medium in accordance with the present invention comprises at least one piece of title management information, a playlist directory area storing at least one playlist including at least one playitem, and a stream directory area storing at least one clip of video data associated with the playlist. The title management information includes at least one segment that is associated with at least one playlist in the playlist directory area, and each playitem in the playlist is a unit to be randomized or shuffled during random/shuffle reproduction mode.

Abstract: Upon playback of stream data which is recorded while being appended with time stamp information in units of packets, time management is made using the time stamp information. A video playback time viewed from the user, which may be indicated by I-, B-, and P-picture display times, is different from the time of the time stamp information. For this reason, when time management for the stream data recorded on an information storage medium is made using only the time stamp information, display time control (video playback time control) for the user cannot be accurately done. In this invention, a time relationship table indicating the relationship between the time stamp information recorded in stream data at each I-picture start time position and display time information (PTS or field information) for the user is provided to a portion of management information.

Abstract: A method and apparatus are provided for creating and recording management information for digital data streams, and for reproducing data using the management information. The method for reproducing data from a recording medium includes receiving an access time for accessing data from the recording medium, searching for a target entry point based on the access time by using access time entries, and searching for a target object unit by using the target entry point and object unit entries. The access time entries and the object unit entries are management information stored on the recording medium.

Abstract: This invention allows the user to insert an entry point (bookmark) at an arbitrary recording position of video data, audio data, and the like as if he or she placed a bookmark between pages of a book. Information RTR_VMG that manages recorded objects includes movie cell entry point information M_C_EPI. M_C_EPI includes entry point playback time information EP_PTM and text information PRM_TXTI that pertains to an entry point. PRM_TXTI can store text information that pertains to its contents together with type information and date information of an entry point.

Abstract: A “music video parser” automatically detects and segments music videos in a combined audio-video media stream. Automatic detection and segmentation is achieved by integrating shot boundary detection, video text detection and audio analysis to automatically detect temporal boundaries of each music video in the media stream. In one embodiment, song identification information, such as, for example, a song name, artist name, album name, etc., is automatically extracted from the media stream using video optical character recognition (OCR). This information is then used in alternate embodiments for cataloging, indexing and selecting particular music videos, and in maintaining statistics such as the times particular music videos were played, and the number of times each music video was played.

Abstract: A DVD-Audio which includes a data zone for storing data to be reproduced and an information zone for storing information on the data to be reproduced. The information zone includes directories of a video title set (VIDEO_TS) and an audio title set (AUDIO_TS). The AUDIO_TS directory includes information on an audio manager (AMG) having information on audio titles. The data zone includes the audio titles each having an audio title set information (ATSI) followed by a plurality of contiguous audio objects (AOBs). The ATSI includes a plurality of audio stream attributes each having an audio coding mode, first to third quantization bit numbers, first to third sampling frequencies and decoding algorithm information relating to the number of audio channels. Each of the AOBs includes a plurality of audio packs recorded with audio data corresponding to the decoding algorithm stored in the audio stream attribute.

Abstract: A system records an AV stream composed of a plurality of record units (RUs) containing independently reproducible video units (VUs) of at least video or audio and program information (Movie atom) managing the AV stream, onto a recording medium. The program information contains a piece of information (Edit list atom) that manages a point of junction between the record units or between AV streams. In decoding the AV stream, decoding is halted or decoders are switched at the point of junction, based on the management information on the points of junction, for example.