Daiwa Seiko, Inc.

Mitsubishi Electric Corporation

Mitsubishi Denki Kabushiki Kaisha

Masatoshi Katayama

Eiji Shinohara

Akira Yamaguchi

Kyoichi Kaneko

Wataru Tsutsumi

Nobuo Ohata

Masaki Noda

Takashi Kondo

Kuniaki Motoshima

Masamichi Nogami

Masashi Fujioka

Akihiro Kondo

Hiroyuki Ozaki

Shigeo Mimura

Shuichi Matsuzawa

Muneaki Tsukihiji

Shigeo Yamanaka

Noriyasu Fukushima

Naoto Himura

Shinya Nishi

Kenji Senoo

Tamon Omura

Kenji Ogata

An optical transceiver includes an optical component () whose ground is integrated with a signal ground. The optical transceiver includes a conductor () that is electrically connected to the optical component (), and a sheet-like insulator () disposed between the conductor () and a housing () such that a main surface thereof is positioned along an inner wall of the housing (), and separating the signal ground and a frame ground on the side of the housing () from each other.

Optical transceiver

A subscriber-side optical network unit (ONU) includes a control LSI for outputting a data signal and a pre-bias signal at fixed intervals, an optical transmitter-receiver for producing optical output in response to these signals, and a light-emission error preventing circuit for preventing light-emission error. First and second light-emission error detecting circuits output an abnormality detection alarm signal when no rising edge occurs in the data signal and pre-bias signal for a prescribed period of time. An OR element, when receiving the abnormality detection alarm signal from at least one of the first and second light-emission error detecting circuits, supplies the optical transmitter-receiver with a shutdown signal and halts the optical output.

Light-emission error preventing circuit for optical transmitter

At the time of assembly of an optical transmission/reception module, a test variable wavelength light sourcefor outputting a test light signal is connected to a connectorof an optical fiber, and a large-diameter PDmeasures a transmission loss in a light wavelength band limiting filterwhile a rotational position determining unitrotates a fiber ferrule, so that the rotational position determining unitdetermines the rotational position &#x3b8;of the fiber ferrulewhich minimizes the transmission loss in the light wavelength band limiting filter, and aligns the fiber ferruleat the rotational position &#x3b8;.

Optical reception module and method of manufacturing optical reception module

An optical transmission/reception module including a filter holder on which filter mount surfaces for mounting wavelength division multiplexing filters and light wavelength band limiting filters are formed and in which a hole for guiding a light signal is formed in each of the filter mount surfaces incorporated into a housing. The wavelength division multiplexing filters and the light wavelength band limiting filters are mounted to the filter mount surfaces formed on the filter holder, respectively.

Optical transmission/reception module

A data transmission system includes subscriber units and a central office unit which are interconnected via optical fibers. The central office unit multiplexes a video signal with signals other than the video signal to deliver them to the multiple subscriber units. Each subscriber unit demultiplexes a received signal, and includes a wavelength division multiplexer/demultiplexer having a function of eliminating a particular wavelength signal in the subscriber unit.

Data transmission system

A fishing spinning reel comprises: a reel body; a rotor which is rotatably attached to the reel body, rotated in association with a rotation of a handle and includes a supporting arm; a bail supporting member including a bail and a fishing line guide portion, which is reversibly supported by the supporting arm and is adapted to be held in a fishing line-winding position and a fishing line-releasing position; a reversing member capable of moving in association with a reversing operation of the bail support member from the fishing line-winding position to the fishing line-releasing position; and a braking member elastically deformably held by the reversing member. When the bail support member is moved from the fishing line-winding position to the fishing line-releasing position, the braking member is brought into contact with a braking portion formed at the reel main body.

Fishing spinning reel

Fishing reel body

Information processing apparatus with improved multiple memory access and control

In a spinning reel for fishing, a diameter of the front side flange portion of a spool relative to a distance defined between outer surfaces of support arms provided on a rotor is set at 0.6 to 0.8, and a rear end of a rear side flange portion is tapered so that a diameter of the rear end is gradually decreased rearwardly. Thus, it is possible to increase the diameter of the spool without increasing the size of the rotor.

Spinning reel for fishing with a spool having front and rear flange portions

In a spinning reel used for fishing including a rotor (3) rotatable in cooperation with rotation of a handle, the rotor supporting a bail supporting member (8) having a guide (10) for guiding a fishing line therewith, the bail supporting member (8) is able to swing between a fishing line winding position and a fishing line releasing position, the bail supporting member being biased by a spring member to position at each of the fishing line winding position and the fishing line releasing position. A backward return force produced when the bail supporting member returns to its prior position is absorbed and relaxed just before a return winding position at which the bail supporting member is returned from the fishing line releasing position to the fishing line winding position. An impact (noise) can be eliminated when a bail supporting member is returned from a fishing line releasing position to a fishing line winding position, and a fishing line winding position of a bail supporting member, that is, a position of a fishing line guide, can be stabilized.

Spinning reel with buffer for damping the return force of a bail

A fishing reel includes: a reel main body; a rotary drive shaft being rotatable in association with a handle; and a one-way clutch of a rolling type for allowing the rotary drive shaft to rotate in one direction and prohibitng the rotary drive shaft from rotating in the other direction to thereby prevent the reversed rotation of the rotatary drive shaft. The one-way clutch is disposed between the rotary drive shaft and the reel main body and includes: a rolling member; and an outer race disposed between the rolling member and said main body. The outer race has an engagement portion. Further, the fishing reel includes a rotation preventive member secured to the engagement portion, while being fitted into the reel main body, to thereby prevent the rotation of the outer race with respect to the reel main body.

Fishing reel

A negative feedback preamplifier having variable conversion gain control and variable open loop gain control capabilities which can work correctly regardless of semiconductor process variations. The negative feedback preamplifier used to convert an input signal current to a signal in the form of voltage includes: a resistor which determines the current-voltage conversion gain when a small signal current is input to the negative feedback preamplifier; a diode which switches the current-voltage conversion gain when a large signal current is input to the negative feedback preamplifier; a resistor which determines the current-voltage conversion gain when the large signal current is input; a grounded source amplifier including a main FET which is biased such that its transconductance decreases when the large signal current is input; and a bias setting portion (diode) which determines the bias condition associated with the main FET.

Negative feedback amplifier

In a spinning reel for fishing, on a leading end side of a support arm provided in a rotor, there is formed a mounting portion for mounting a Support member including a fishing line guide member by combination of the support arm and a cover member mounted on the support arm, and a base portion of the support member is journaled on the mounting portion, so that the support member can be reversed between its fishing line take-up and play-out positions. The spinning reel can prevent a fishing line from being entangled during fishing operation, and can increase the diameter of a spool without increasing the size of the whole reel.

Spinning reel for fishing having a support arm with a support member

A spinning reel for fishing eliminates the accumulation of line twists in a fishline regardless of the line winding diameter on a spool. The line roller is oriented such that the diameter of a fishline guide portion of the line roller increases in the direction of rotor rotation during winding. A guide projection extending generally along a plane orthogonal to the axis of the line roller contacts the fishline to ensure the fishline is maintained at a desired position with respect to the line roller during winding. The axis of rotation for the line roller is obliquely oriented with respect to the spool shaft. The inclination of the axis of rotation for the line roller is preferably in the range of 1.degree. to 10.degree., and more preferably 2.degree. to 6.degree. from the viewpoint of attaining smooth rotation of the line roller, preventing damage of the fishline and stabilizing line control function of the guide.

Spinning reel for fishing having an obliquely oriented line guide roller

The present disclosure concerns a spinning reel for fishing which eliminates the accumulation of line twists in a fishline regardless of the line winding diameter on a spool. The spinning reel for fishing includes a rotor rotatably mounted to a reel main body, and the spool is supported on the reel main body through a spool shaft. Turning a manual handle causes the rotor to rotate around the spool. A line roller is supported on the rotor and guides the fishline onto the spool during winding. The line roller is oriented such that the diameter of a fishline guide portion of the line roller increases in the direction of rotor rotation during winding. A guide projection extending generally toward the longitudinal midpoint of the line roller contacts the fishline to ensure the fishline is maintained at a desired position with respect to the line roller during winding.

Growing community of inventors

Tokyo, Japan

Masatoshi Katayama