Abstract: A method for manufacturing a vibration element that includes a base portion, a first vibration arm and a second vibration arm that extend from the base portion along a first direction and are arranged along a second direction intersecting the first direction, and bottomed grooves on both main surfaces of the first vibration arm and both main surfaces of the second vibration arm includes: a preparing step of preparing a crystal substrate; a protective film forming step of forming a protective film on the crystal substrate except for groove regions that are regions in which the grooves are formed; and a dry etching step of dry etching the crystal substrate through the protective film to form the grooves. The grooves provided in at least one of the first vibration arm and the second vibration arm include a first groove and a second groove arranged along the second direction.

Abstract: A method for manufacturing a vibrator device includes a first dry etching step of dry-etching a quartz crystal substrate having a first surface and a second surface from the side facing the first surface to form first grooves and part of the outer shapes of a first vibrating arm and a second vibrating arm, a second dry etching step of dry-etching the quartz crystal substrate from the side facing the second surface to form second grooves and part of the outer shapes of the first vibrating arm and the second vibrating arm, and thereafter, a wet etching step of wet-etching the side surfaces of the first vibrating arm and the second vibrating arm.

Abstract: Included are: a signal change detection unit (1) that detects a change occurring in an optical signal when a physical stimulus is applied to an optical fiber (FB); and a display control unit (3) that displays identification information indicating the optical fiber (FB) in which the change has occurred in the optical signal.

Abstract: A transmission system including: a duplication unit that duplicates a plurality of packets obtained by packetizing a stream of an uncompressed video; a filter that filters the duplicated packet; and a generation unit that generates a thumbnail image or a low-resolution video from the filtered packet.

Abstract: A transmission device 10 includes: an SDI input unit 11 that inputs a plurality of sub-pictures obtained by dividing a picture from a plurality of links of an SDI; a mapping management unit 12 that selects an ST 2110 mapping scheme for pixel data to a packet on the basis of a combination of an SDI mapping scheme for the pixel data in the SDI and the RP 2110-23 compatibility; and an ST 2110 output unit 13 that stores the pixel data of the picture in the packet in accordance with the ST 2110 mapping scheme and outputs the packet.

Abstract: A transmission system includes a calculation unit 251 that calculates a jitter pattern sequence of a plurality of packets transmitted by a transmission device 1 via a network using a transmission interval of the plurality of packets and a difference between arrival times at which the packets arrive at a reception device 2, a generation unit 252 that inputs the jitter pattern sequence to a first learning model 254 to generate a state index indicating a state of the network, and a buffer estimation unit 26 that determines a buffer size of a reception buffer 23 of the reception device 2 based on the state index.

Abstract: A video transmission system includes a video transmitter for storing a packet of video data in a transmitting buffer and transmitting the packet stored in the transmitting buffer, a video receiver for receiving the packet, and an estimation unit for estimating a characteristic of a transmission line between the video transmitter and the video receiver from an arrival time of each packet in the video receiver. The video transmitter transmits a packet at a timing specified from an inverse characteristic of a characteristic of the transmission line.

Abstract: A gear comprised of a tooth surface and a hard carbon film formed on at least a part of the tooth surface. When the gear is used in lubricant including a specific component, a friction of a tooth surface of the gear is largely decreased, and therefore the gear performs an excellent power transmission efficiency. Further, when the gear is employed in a planetary gear mechanism or speed reducing mechanism which has a plurality of meshing portions of gears, the power transmission efficiency of the mechanism is also improved.

Abstract: A titanium alloy contains vanadium, from 10 to 20% by weight; aluminum, from 0.2 to 10% by weight; and a balance essentially titanium, and the alloy has a microstructure including a martensite phase. Alternatively, the titanium alloy contains vanadium, from 10 to 20% by weight; aluminum, from 0.2 to 10% by weight; and a balance essentially titanium, and the alloy has a microstructure including a ? phase capable of transforming into a martensite phase by cold working or cooling under a room temperature.

Abstract: A gear comprised of a tooth surface and a hard carbon film formed on at least a part of the tooth surface. When the gear is used in lubricant including a specific component, a friction of a tooth surface of the gear is largely decreased, and therefore the gear performs an excellent power transmission efficiency. Further, when the gear is employed in a planetary gear mechanism or speed reducing mechanism which has a plurality of meshing portions of gears, the power transmission efficiency of the mechanism is also improved.

Abstract: A speaker system functioning as a stand capable of power supply to a mobile phone and hand-free communication and being capable of derived surround reproduction or stereo reproduction is provided. An enclosure (201), on which a mobile phone is placed, includes therein supply means (209) for supplying electric power to the mobile phone, communication means (213) for enabling hand-free communication by the mobile phone through a microphone (211), processing means for introducing signals from the mobile phone and performing a predetermined processing, and a pair of speakers (215, 215?) provided on both sides of the enclosure in a state in which back sides thereof are substantially face to each other for generating sounds based on output signals from the processing means.

Abstract: A titanium alloy contains vanadium, from 10 to 20% by weight; aluminum, from 0.2 to 10% by weight; and a balance essentially titanium, and the alloy has a microstructure including a martensite phase. Alternatively, the titanium alloy contains vanadium, from 10 to 20% by weight; aluminum, from 0.2 to 10% by weight; and a balance essentially titanium, and the alloy has a microstructure including a ? phase capable of transforming into a martensite phase by cold working or cooling under a room temperature.

Abstract: A speaker system functioning as a stand capable of power supply to a mobile phone and hand-free communication and being capable of derived surround reproduction or stereo reproduction is provided. An enclosure (201), on which a mobile phone is placed, includes therein supply means (209) for supplying electric power to the mobile phone, communication means (213) for enabling hand-free communication by the mobile phone through a microphone (211), processing means for introducing signals from the mobile phone and performing a predetermined processing, and a pair of speakers (215, 215?) provided on both sides of the enclosure in a state in which back sides thereof are substantially face to each other for generating sounds based on output signals from the processing means.

Abstract: A speaker system functioning as a stand capable of power supply to a mobile phone and hand-free communication and being capable of derived surround reproduction or stereo reproduction is provided. An enclosure (201), on which a mobile phone is placed, includes therein supply means (209) for supplying electric power to the mobile phone, communication means (213) for enabling hand-free communication by the mobile phone through a microphone (211), processing means for introducing signals from the mobile phone and performing a predetermined processing, and a pair of speakers (215, 215?) provided on both sides of the enclosure in a state in which back sides thereof are substantially face to each other for generating sounds based on output signals from the processing means.

Abstract: A high strength gear is provided which comprises a base metal of an iron-base alloy, the base metal being carburized or carbonitrided and having a tooth surface, and a coating containing Fe nitride and/or Fe carbonitride, formed on the tooth surface. A method of forming a high strength gear is also provided.

Abstract: A bearing pressure-resistant member, including a matrix and a carbide dispersed in the matrix, the carbide having an average particle size of not more than 0.3 ?m. A carbon (C) content in an outer surface of the bearing pressure-resistant member is in a range of 0.6 to 1.5 mass percent. A process for making the bearing pressure-resistant member including subjecting a workpiece containing C to either of gas carburizing and gas carbonitriding to enhance the C content in the outer surface of the workpiece to 0.6 to 1.5 mass percent, holding the workpiece at a first temperature not more than an Ac1 transformation point under reduced pressure, heating the workpiece to a second temperature not less than the Ac1 transformation point under reduced pressure, followed by holding the workpiece at the second temperature, and subjecting the workpiece to quenching.

Abstract: A contact pressure-resistant member including a rolling contact portion having a carbon concentration ranging from 0.8 to 1.2%. The contact pressure-resistant member is made of a steel material containing 0.15 to 0.40% by mass of C, 0.50 to 1.50% by mass of Si, 0.20 to 1.50% by mass of Mn, 0.50 to 1.50% by mass of Cr, and 0.05 to 0.50% by mass of Mo, 0.010% by mass or less of P, at least one element selected from the group consisting of 0.50 to 3.50% by mass of Ni, 0.03 to 0.20% by mass of Ti, 0.03 to 0.15% by mass of Nb and 0.01 to 0.10% by mass of Al, and the balance of Fe and inevitable impurities.

Abstract: A rolling element for a continuously variable transmission, including a plurality of rolling members having rolling contact portions that come into rolling contact with each other via lubricating oil. At least one of the rolling contact portions includes an outer surface layer having a surface microhardness of not less than Hv 750, a surface residual compressive stress of not less than 1000 MPa and a residual austenite content of not more than 10% by volume.

Abstract: A gear comprised of a tooth surface and a hard carbon film formed on at least a part of the tooth surface. When the gear is used in lubricant including a specific component, a friction of a tooth surface of the gear is largely decreased, and therefore the gear performs an excellent power transmission efficiency. Further, when the gear is employed in a planetary gear mechanism or speed reducing mechanism which has a plurality of meshing portions of gears, the power transmission efficiency of the mechanism is also improved.

Abstract: A bearing pressure-resistant member, including a matrix and a carbide dispersed in the matrix, the carbide having an average particle size of not more than 0.3 &mgr;m. A carbon (C) content in an outer surface of the bearing pressure-resistant member is in a range of 0.6 to 1.5 mass percent. A process for making the bearing pressure-resistant member including subjecting a workpiece containing C to either of gas carburizing and gas carbonitriding to enhance the C content in the outer surface of the workpiece to 0.6 to 1.5 mass percent, holding the workpiece at a first temperature not more than an Ac1 transformation point under reduced pressure, heating the workpiece to a second temperature not less than the Ac1 transformation point under reduced pressure, followed by holding the workpiece at the second temperature, and subjecting the workpiece to quenching.