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Browse by: INVENTOR PATENT HOLDER PATENT NUMBER DATE
 
 
Inventor:
Hatakeyama; Ichiro
Address:
Tokyo, JP
No. of patents:
14
Patents:












Patent Number Title Of Patent Date Issued
7918610 Optical transceiver and optical connector April 5, 2011
An optical connector fitted upon a tip end portion of an optical fiber ribbon and disposed to face an optical input and output terminators which are installed upon a substrate, and which optically connects between optical fibers of the optical fiber ribbon and each of the optical input
7620272 Photoelectric composite module and optical input/output device November 17, 2009
A photoelectric composite module has an optical device, a package and a flexible printed circuit that is set along both case parts of the package, and electric wiring for the optical device is formed thereon. The package has a first case part and a second case part that is connected
7561762 Semiconductor device having optical signal input-output mechanism July 14, 2009
A semiconductor device has printed wiring board (11) where electric wiring (18) connected to LSI chip (17) and to planar optical element (21) is formed, and where optical waveguide (25) which transfers light inputted into planar optical element (21) and/or light outputted from planar
7534052 Optical transceiver and optical connector May 19, 2009
An optical transceiver 10 includes an optical device 16 which is provided upon a substrate 11, an optical connector 14 which is connected to an optical fiber 15a, and a connector holder 13 for optically connecting together the optical device and the optical connector 14. The connector
7504701 Optical unit featuring both photoelectric conversion chip and semiconductor chip wrapped with fl March 17, 2009
In an optical unit including a photoelectric conversion chip adapted to be optically connected to an optical fiber, and a semiconductor chip for driving the photoelectric conversion chip, both the photoelectric conversion chip and the semiconductor chip are wrapped with a flexible sh
7473038 Optical connector for coupling an optical fiber to a circuit board January 6, 2009
An optical connector according to the present invention including a connector body mounted on an optical module mounted on a circuit board, and a connector fixing member for pressing the connector body against the optical module. The connector fixing member can be engaged/disengaged
7333683 Structure and method for mounting LSI package onto photoelectric wiring board, information proce February 19, 2008
An LSI package having an optical interface is mounted on a surface of a photoelectric wiring board. The photoelectric wiring board and the optical interface are optically connected with sufficient precision. A wiring board side guide member including socket pins and guide pins is sol
6819722 Offset control circuit, optical receiver using the same and optical communication system November 16, 2004
An offset control circuit can obtain an output waveform free of fluctuation of duty ratio by canceling offset transitionally varying according to elapsed time even upon reception of an optical signal in burst form significantly variable of level difference, an optical receiver employing
6538790 Optical receiver array March 25, 2003
An optical receiver array includes a plurality of light-receiving elements, a plurality of amplifiers, and a plurality of low-pass filters. The light-receiving elements convert optical signals of a plurality of channels into electrical signals, respectively. The amplifiers amplify the
6081362 Optical receiver capable of responding to both burst and continuous signals June 27, 2000
An optical receiver can operate in response to an input optical signal to produce an output electrical signal. The optical receiver comprises a photo diode (340) for transducing the input optical signal into an electrical signal, a plurality of limit amplifier circuits (310-1, 310-2,
6018407 Optical receiving circuit January 25, 2000
An optical receiving circuit comprising a plurality of amplifying circuits successively connected in a multiple stage form, each of the plurality of amplifying circuits having an offset compensating function. The optical receiving circuit includes offset compensating circuits respectivel
5798664 Offset cancelling amplifier circuit having Miller integrator as offset detector August 25, 1998
In an optical receiver, an offset cancelling amplifier comprises a limiting amplifier for amplifying an input signal while preventing amplified amplitude from exceeding a predetermined level to provide an output signal, an offset detector for detecting an offset in the output signal to
5793256 Integrated circuit preamplifier for an optical receiver August 11, 1998
In a preamplifier for amplifying an input signal supplied to an input terminal to supply an amplified output signal and a reference output signal to an output terminal and a reference output terminal, respectively, a reference level circuit produces a reference level. An amplifier is
5525929 Transimpedance amplifier circuit with feedback and load resistor variable circuits June 11, 1996
A transimpedance amplifier circuit for converting an input current to an output voltage includes a feedback resistor variable circuit which is connected in parallel to a feedback resistor and a load resistor variable circuit which is connected to a collector of an amplifying transistor.










 
 
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