Patents by Inventor Hiromasa Nakajima
Hiromasa Nakajima has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
-
Patent number: 11962081Abstract: An antenna and a radome that covers the antenna are provided, the radome includes a first part, a second part, and a third part each with a surface which is flush to each other, the first part has a beam transmission characteristic corresponding to a scanning angle of 0 degrees of a beam emitted by the antenna with an emission direction directed toward the first part, the second part has a beam transmission characteristic corresponding to a first scanning angle of a beam emitted by the antenna with an emission direction directed toward the second part, and the third part has a beam transmission characteristic corresponding to a second scanning angle of a beam emitted by the antenna with an emission direction directed toward the third part.Type: GrantFiled: July 27, 2021Date of Patent: April 16, 2024Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiromasa Nakajima, Shinichi Yamamoto, Michio Takikawa
-
Publication number: 20230318196Abstract: A reflector antenna apparatus includes: a radiator that emits a radio wave; a reflector that reflects the radio wave emitted from the radiator, a shape of the reflector being changeable; a support structure supporting the reflector, the support structure being connected to at least a part of an outer periphery of the reflector and including at least two flexible support members capable of following a change in the shape of the reflector; an injection device that injects a fluid into the at least two support members; and a coupling that couples the reflector and the at least two support members. In a deployed state in which the at least two support members are filled with the fluid, the reflector is configured to form a curved surface shape in which the reflector is not curved in a first direction and is curved in a second direction orthogonal to the first direction.Type: ApplicationFiled: June 8, 2023Publication date: October 5, 2023Applicant: Mitsubishi Electric CorporationInventors: Hiromasa NAKAJIMA, Shinichi YAMAMOTO, Michio TAKIKAWA
-
Patent number: 11777226Abstract: A reflector antenna device includes: a primary radiator to radiate a first radio wave in a first frequency band and a second radio wave in a second frequency band lower in frequency than the first frequency band; and a reflector having a reflection face reflecting the first radio wave and the second radio wave radiated by the primary radiator, in which the reflection face of the reflector has a first region including a center point of the reflection face and a second region that is an outer peripheral region of the first region and is provided with a plurality of recesses, and each of the plurality of recesses is configured to allow entrance of the first radio wave, restrict entrance of the second radio wave, and reflect the first radio wave having entered the recess on a bottom face of the recess.Type: GrantFiled: March 22, 2022Date of Patent: October 3, 2023Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiromasa Nakajima, Shinichi Yamamoto, Michio Takikawa, Shuji Nuimura
-
Publication number: 20220216618Abstract: A reflector antenna device includes: a primary radiator to radiate a first radio wave in a first frequency band and a second radio wave in a second frequency band lower in frequency than the first frequency band; and a reflector having a reflection face reflecting the first radio wave and the second radio wave radiated by the primary radiator, in which the reflection face of the reflector has a first region including a center point of the reflection face and a second region that is an outer peripheral region of the first region and is provided with a plurality of recesses, and each of the plurality of recesses is configured to allow entrance of the first radio wave, restrict entrance of the second radio wave, and reflect the first radio wave having entered the recess on a bottom face of the recess.Type: ApplicationFiled: March 22, 2022Publication date: July 7, 2022Applicant: Mitsubishi Electric CorporationInventors: Hiromasa NAKAJIMA, Shinichi YAMAMOTO, Michio TAKIKAWA, Shuji NUIMURA
-
Publication number: 20220045412Abstract: A polarized waveguide filter is formed in which the polarized waveguide filter includes a first rectangular waveguide; a second rectangular waveguide; and a rectangular cavity resonator that has a first edge surface connected to an electromagnetic wave exit plane of the first rectangular waveguide via a coupling unit, and has a second edge surface facing the first edge surface and connected to an electromagnetic wave incident plane of the second rectangular waveguide via a coupling unit, and excites each of a TE10 mode and a TE20 mode of an electromagnetic wave, and the rectangular cavity resonator has two first wall surfaces and two second wall surfaces narrower in area than the first wall surfaces, and a protrusion that shifts a resonance frequency of the TE10 mode and a resonance frequency of the TE20 mode by respective amounts different from each other is provided on at least one of the two first wall surfaces, in such a way as to protrude outward from the rectangular cavity resonator.Type: ApplicationFiled: October 26, 2021Publication date: February 10, 2022Applicant: Mitsubishi Electric CorporationInventors: Hidenori YUKAWA, Ryuya SEKI, Hiroto ADO, Hiromasa NAKAJIMA, Yu USHIJIMA, Toru TAKAHASHI
-
Publication number: 20210359403Abstract: An antenna and a radome that covers the antenna are provided, the radome includes a first part, a second part, and a third part each with a surface which is flush to each other, the first part has a beam transmission characteristic corresponding to a scanning angle of 0 degrees of a beam emitted by the antenna with an emission direction directed toward the first part, the second part has a beam transmission characteristic corresponding to a first scanning angle of a beam emitted by the antenna with an emission direction directed toward the second part, and the third part has a beam transmission characteristic corresponding to a second scanning angle of a beam emitted by the antenna with an emission direction directed toward the third part.Type: ApplicationFiled: July 27, 2021Publication date: November 18, 2021Applicant: Mitsubishi Electric CorporationInventors: Hiromasa NAKAJIMA, Shinichi YAMAMOTO, Michio TAKIKAWA
-
Patent number: 11069949Abstract: A hollow-waveguide-to-planar-waveguide transition circuit includes: strip conductors formed on a first main surface of a dielectric substrate; a ground conductor formed on the back side, facing the strip conductors; a slot formed in the ground conductor; and a coupling conductor formed at a position to be electrically coupled with the strip conductors. The coupling conductor has: a main body portion electrically coupled with the strip conductors; and protruding portions protruding from the main body portion. The protruding portions are formed so as to face an end portion of the slot.Type: GrantFiled: July 5, 2016Date of Patent: July 20, 2021Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiromasa Nakajima, Akimichi Hirota, Naofumi Yoneda, Takeshi Oshima
-
Patent number: 11054236Abstract: A tape winding device includes a fixed plate having a fixed plate side notch, a rotation plate having a rotation plate side notch which the linear member to be inserted into or removed from when a position of the rotation plate side notch is aligned with a position of the fixed plate side notch, a tape support unit and a position regulating member configured to regulate a position of the linear member in the fixed plate side notch and the rotation plate side notch such that the linear member is located at the bottom region of the fixed plate side notch and the rotation plate side notch, the position regulating member having a distal end arm portion, the distal end arm portion running across an opening of the fixed plate side notch and extending over two opposing inner edges of the fixed plate side notch at a regulation position.Type: GrantFiled: December 12, 2019Date of Patent: July 6, 2021Assignee: YAZAKI CORPORATIONInventors: Hiromasa Nakajima, Ryo Inoue, Morihiro Fujimatsu
-
Patent number: 10811753Abstract: A hollow-waveguide-to-planar-waveguide transition circuit includes: a dielectric substrate; strip conductors formed on a first main surface of the dielectric substrate; a ground conductor formed on a second main surface of the dielectric substrate, facing the strip conductors in the thickness direction; a slot formed in the ground conductor; a coupling conductor formed at a position to be electrically coupled with the strip conductors on the first main surface; and branch conductor lines formed on the first main surface. Each of the branch conductor lines includes a base portion branching from the coupling conductor and a tip portion that is electrically open.Type: GrantFiled: July 5, 2016Date of Patent: October 20, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiromasa Nakajima, Akimichi Hirota, Naofumi Yoneda, Takeshi Oshima
-
Publication number: 20200235454Abstract: A hollow-waveguide-to-planar-waveguide transition circuit includes: strip conductors formed on a first main surface of a dielectric substrate; a ground conductor formed on the back side, facing the strip conductors; a slot formed in the ground conductor; and a coupling conductor formed at a position to be electrically coupled with the strip conductors. The coupling conductor has: a main body portion electrically coupled with the strip conductors; and protruding portions protruding from the main body portion. The protruding portions are formed so as to face an end portion of the slot.Type: ApplicationFiled: July 5, 2016Publication date: July 23, 2020Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Hiromasa NAKAJIMA, Akimichi HIROTA, Naofumi YONEDA, Takeshi OSHIMA
-
Publication number: 20200116467Abstract: A tape winding device includes a fixed plate having a fixed plate side notch, a rotation plate having a rotation plate side notch which the linear member to be inserted into or removed from when a position of the rotation plate side notch is aligned with a position of the fixed plate side notch, a tape support unit and a position regulating member configured to regulate a position of the linear member in the fixed plate side notch and the rotation plate side notch such that the linear member is located at the bottom region of the fixed plate side notch and the rotation plate side notch, the position regulating member having a distal end arm portion, the distal end arm portion running across an opening of the fixed plate side notch and extending over two opposing inner edges of the fixed plate side notch at a regulation position.Type: ApplicationFiled: December 12, 2019Publication date: April 16, 2020Applicant: Yazaki CorporationInventors: Hiromasa NAKAJIMA, Ryo INOUE, Morihiro FUJIMATSU
-
Publication number: 20190148808Abstract: A hollow-waveguide-to-planar-waveguide transition circuit includes: a dielectric substrate; strip conductors formed on a first main surface of the dielectric substrate; a ground conductor formed on a second main surface of the dielectric substrate, facing the strip conductors in the thickness direction; a slot formed in the ground conductor; a coupling conductor formed at a position to be electrically coupled with the strip conductors on the first main surface; and branch conductor lines formed on the first main surface. Each of the branch conductor lines includes a base portion branching from the coupling conductor and a tip portion that is electrically open.Type: ApplicationFiled: July 5, 2016Publication date: May 16, 2019Applicant: Mitsubishi Electric CorporationInventors: Hiromasa NAKAJIMA, Akimichi HIROTA, Naofumi YONEDA, Takeshi OSHIMA
-
Patent number: 6853589Abstract: The time required for access to a SDRAM (110) is extracted from the layout of an integrated circuit (1000), a first phase difference between an external clock SDCLKO and an internal clock ICLK is calculated, and the value of delay of the external clock signal or the internal clock signal in the integrated circuit (1000) is changed on the basis of the calculated first phase difference, whereby clock phase adjustment for the integrated circuit (1000) in the designing stage is realized.Type: GrantFiled: March 10, 2003Date of Patent: February 8, 2005Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masayoshi Tojima, Hiromasa Nakajima, Masahiro Oohashi, Yasuo Kohashi
-
Patent number: 6791625Abstract: Apparatus and method for data transmission while performing encoding processing on a non-limited moving vector mode, which avoids an increase in required memory capacity and a reduction in processing load, the apparatus comprising a two dimensional address generating unit for generating an access address of an external memory and an address control unit for administrating the horizontal position and the vertical position of the extended logical space and generating an operation authorizing signal for the two dimensional address generating unit, and the two dimensional address generating unit and the address control unit are operated in relation to each other so that an access address to outside the effective video data region is controlled to be an address of a pixel data at the periphery of the effective video data region, thereby reducing the extended region in the external memory.Type: GrantFiled: July 12, 2001Date of Patent: September 14, 2004Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Yasuo Kohashi, Toshihiro Moriiwa, Shunichi Kuromaru, Hiromasa Nakajima, Tomonori Yonezawa, Miki Arita
-
Publication number: 20030179625Abstract: The time required for access to a SDRAM (110) is extracted from the layout of an integrated circuit (1000), a first phase difference between an external clock SDCLKO and an internal clock ICLK is calculated, and the value of delay of the external clock signal or the internal clock signal in the integrated circuit (1000) is changed on the basis of the calculated first phase difference, whereby clock phase adjustment for the integrated circuit (1000) in the designing stage is realized.Type: ApplicationFiled: March 10, 2003Publication date: September 25, 2003Applicant: Matsushita Electric Industrial Co., Ltd.Inventors: Masayoshi Tojima, Hiromasa Nakajima, Masahiro Oohashi, Yasuo Kohashi
-
Patent number: 6556505Abstract: The time required for access to a SDRAM (110) is extracted from the layout of an integrated circuit (1000), a first phase difference between an external clock SDCLKO and an internal clock ICLK is calculated, and the value of delay of the external clock signal or the internal clock signal in the integrated circuit (1000) is changed on the basis of the calculated first phase difference, whereby clock phase adjustment for the integrated circuit (1000) in the designing stage is realized.Type: GrantFiled: July 12, 2001Date of Patent: April 29, 2003Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masayoshi Tojima, Hiromasa Nakajima, Masahiro Oohashi, Yasuo Kohashi
-
Patent number: 6188440Abstract: A conversion unit having a bidirectional conversion function of converting analog video signals into digital image data and vice versa and a processing unit having a function of encoding image data and of decoding encoded data are provided. A data transmission control unit switches the flow direction of each of image data and encoded data in response to an encoder/decoder switch signal. A process control unit performs switching of the receiving/transmitting of a control signal such as a transmission clock signal relating to encoded data in response to a master/slave set signal.Type: GrantFiled: June 5, 1998Date of Patent: February 13, 2001Assignee: Matsushita Electric Industrial Co., Ltd.Inventors: Masayoshi Toujima, Hiromasa Nakajima, Yasuo Kohashi, Hitoshi Fujimoto, Misako Matsumoto