Patents by Inventor Takashi Hidai
Takashi Hidai 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).
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Patent number: 7119753Abstract: An object of the invention is to provide a slot array antenna in which unstable factors for contact of an adjustment portion comprising a slot waveguide and a waveguide holder are removed, a number of parts is decreased to save weight, and assembly is simplified. Accordingly, this invention is to constitute a radiation portion (1) unitedly formed of a slot waveguide (1a), a flare holder (1b), and a supporting portion (1d), if necessary, further adding a screen holder (1c) for a screen (4) for cross polarization suppression. Furthermore, this invention is to constitute a reinforcement feeder (2) unitedly formed of a feeder waveguide (2a), a reinforcement portion (2b) and a reinforcement connector (2c) in the case of an open type antenna.Type: GrantFiled: August 16, 2004Date of Patent: October 10, 2006Assignee: Taiyo Musen Co., Ltd.Inventors: Takashi Hidai, Shinobu Tamura
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Patent number: 7107414Abstract: A transceiver including a controller, a first memory that includes first information, and a second memory accessible by a host is provided. The controller is configured to copy the first information from the first memory to the second memory.Type: GrantFiled: January 15, 2003Date of Patent: September 12, 2006Assignee: Avago Technologies Fiber IP (Singapore) Ptd. Ltd.Inventors: Takashi Hidai, Michael A. Robinson, Frederick W. Miller
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Patent number: 7075496Abstract: An object of the invention is to provide a fan-beam antenna which comprises a flare which is long in a horizontal direction thereof and whose cross section is horn-shaped, and a water-proof box housing components of said antenna, in which a vertical beam width is made narrow without spreading a vertical size to increase gain. Accordingly, this invention is characterized in that a radome radiation surface is constituted of a plurality of dielectric plates equivalently, and at least one of the dielectric plates is made a dielectric lens having a characteristic similar to a convex lens.Type: GrantFiled: September 14, 2004Date of Patent: July 11, 2006Assignee: Taiyo Musen, Co., Ltd.Inventors: Takashi Hidai, Kazuyoshi Ono
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Patent number: 7065621Abstract: A module that detects a password at a hidden address in order to implement a change in an address scheme. The module includes a bus and a memory having a memory address which is coupled to the bus. The module further includes an interface-comparing circuit that monitors data traffic on the bus and receives a predetermined password. The module still further includes a password-comparing circuit which is coupled to the interface-comparing device and allows access to the memory in response to the interface-comparing circuit receiving the proper predetermined password. Such a module can implement a change in the module's configuration or operating characteristics. Such changes include acknowledging a new memory address into the address scheme, unacknowledging an existing memory address in the address scheme and downloading a new operating program having a new address scheme to a controller coupled to a second bus.Type: GrantFiled: February 18, 2003Date of Patent: June 20, 2006Inventors: Takashi Hidai, Peter H. Mahowald
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Publication number: 20060020857Abstract: A circuit for disabling an energy-generating component. The circuit comprises an input operable to receive a disable signal and a disable circuit operable to disable the component in response to the disable signal for a predetermined duration of time sufficient to maintain an average power generated by the component at or below a predetermined level. The disable circuit further comprises a signal-detection circuit operable to detect the presence of disable signals having a respective rising edge and falling edge, a mask-signal generating circuit coupled to the signal detection circuit and operable to generate a mask signal when one of the edges of a first disable signal is detected; and a latching circuit coupled to the mask-signal generating circuit and operable to generate a mask disable signal if the mask signal is being generated and the other edge of a subsequent disable signal is detected.Type: ApplicationFiled: June 24, 2005Publication date: January 26, 2006Inventors: Frederick Miller, Takashi Hidai, Michael Robinson
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Patent number: 6947456Abstract: A laser driver for generating drive waveforms that are suitable for driving a single VCSEL or an array of VCSELs. A digital controller is integrated into the laser driver and is utilized to initially program and selectively adjust during the operation of the driver one or more of the following VCSEL drive waveform parameters: (1) bias current, (2) modulation current, (3) negative peaking depth, and (4) negative peaking duration. The laser driver has an aging compensation mechanism for monitoring the age of the laser and for selectively adjusting the dc and ac parameters of the VCSEL drive waveform to compensate for the aging of the laser. The laser driver also has a temperature compensation mechanism for monitoring the temperature of the driver IC and selectively adjusting the dc and ac parameters of the VCSEL drive waveform to compensate for the changes in temperature.Type: GrantFiled: December 12, 2000Date of Patent: September 20, 2005Assignee: Agilent Technologies, Inc.Inventors: Jesse Chin, Miaobin Gao, Robert Elsheimer, Matthew Scott Abrams, Heng-ju Cheng, Takashi Hidai, Myunghee Lee, Song Liu
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Patent number: 6914469Abstract: A system that includes a first circuit configured generate a first set of encoded signals in response to a first clock signal and a second circuit configured to generate a second set of encoded signals in response to the first clock signal is provided. The system also includes a third circuit configured to generate a first pulse signal and a second pulse signal in response to the first set of encoded signals and the second set of encoded signals, and a fourth circuit configured to generate a second clock signal in response to the first pulse signal and the second pulse signal.Type: GrantFiled: July 15, 2004Date of Patent: July 5, 2005Assignee: Agilent Technologies, Inc.Inventor: Takashi Hidai
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Publication number: 20050138217Abstract: A communications system includes a transceiver and a host board. The transceiver includes an interrupt request terminal and a communication port. The host board includes an interrupt request line and a communication bus, wherein the interrupt request line is coupled to the interrupt request terminal to receive an interrupt request, and the communication bus is coupled to the communication port to receive data.Type: ApplicationFiled: December 10, 2003Publication date: June 23, 2005Inventors: Stefano Therisod, Myunghee Lee, Takashi Hidai
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Publication number: 20050062664Abstract: An object of the invention is to provide a fan-beam antenna which comprises a flare which is long in a horizontal direction thereof and whose cross section is horn-shaped, and a water-proof box housing components of said antenna, in which a vertical beam width is made narrow without spreading a vertical size to increase gain. Accordingly, this invention is characterized in that a radome radiation surface is constituted of a plurality of dielectric plates equivalently, and at least one of the dielectric plates is made a dielectric lens having a characteristic similar to a convex lens.Type: ApplicationFiled: September 14, 2004Publication date: March 24, 2005Inventors: Takashi Hidai, Kazuyoshi Ono
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Publication number: 20050040993Abstract: An object of the invention is to provide a slot array antenna in which unstable factors for contact of an adjustment portion comprising a slot waveguide and a waveguide holder are removed, a number of parts is decreased to save weight, and assembly is simplification. Accordingly, this invention is to constitute a radiation portion (1) unitedly of a slot waveguide (1a), a flare holder (1b), and a supported portion (1d), if necessary, further adding a screen holder (1c) for a screen (4) for cross polarization suppression. Furthermore, this invention is to constitute a reinforcement feeder (2) unitedly of a feeder waveguide (2a), a reinforcement portion (2b) and a reinforcement connector (2c) in the case of an open type antenna.Type: ApplicationFiled: August 16, 2004Publication date: February 24, 2005Inventors: Takashi Hidai, Shinobu Tamura
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Patent number: 6856184Abstract: A system that includes a first circuit configured generate a first set of encoded signals in response to a first clock signal and a second circuit configured to generate a second set of encoded signals in response to the first clock signal is provided. The system also includes a third circuit configured to generate a first pulse signal and a second pulse signal in response to the first set of encoded signals and the second set of encoded signals, and a fourth circuit configured to generate a second clock signal in response to the first pulse signal and the second pulse signal.Type: GrantFiled: January 15, 2003Date of Patent: February 15, 2005Assignee: Agilent Technologies, IncInventor: Takashi Hidai
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Publication number: 20040257138Abstract: A system that includes a first circuit configured generate a first set of encoded signals in response to a first clock signal and a second circuit configured to generate a second set of encoded signals in response to the first clock signal is provided. The system also includes a third circuit configured to generate a first pulse signal and a second pulse signal in response to the first set of encoded signals and the second set of encoded signals, and a fourth circuit configured to generate a second clock signal in response to the first pulse signal and the second pulse signal.Type: ApplicationFiled: July 15, 2004Publication date: December 23, 2004Inventor: Takashi Hidai
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Publication number: 20040162956Abstract: A module that detects a password at a hidden address in order to implement a change in an address scheme. The module includes a bus and a memory having a memory address which is coupled to the bus. The module further includes an interface-comparing circuit that monitors data traffic on the bus and receives a predetermined password. The module still further includes a password-comparing circuit which is coupled to the interface-comparing device and allows access to the memory in response to the interface-comparing circuit receiving the proper predetermined password. Such a module can implement a change in the module's configuration or operating characteristics. Such changes include acknowledging a new memory address into the address scheme, unacknowledging an existing memory address in the address scheme and downloading a new operating program having a new address scheme to a controller coupled to a second bus.Type: ApplicationFiled: February 18, 2003Publication date: August 19, 2004Inventors: Takashi Hidai, Peter H. Mahowald
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Publication number: 20040141695Abstract: A circuit for disabling an energy-generating component. The circuit comprises an input operable to receive a disable signal and a disable circuit operable to disable the component in response to the disable signal for a predetermined duration of time sufficient to maintain an average power generated by the component at or below a predetermined level. The disable circuit further comprises a signal-detection circuit operable to detect the presence of disable signals having a respective rising edge and falling edge, a mask-signal generating circuit coupled to the signal detection circuit and operable to generate a mask signal when one of the edges of a first disable signal is detected; and a latching circuit coupled to the mask-signal generating circuit and operable to generate a mask disable signal if the mask signal is being generated and the other edge of a subsequent disable signal is detected.Type: ApplicationFiled: January 17, 2003Publication date: July 22, 2004Inventors: Frederick W. Miller, Takashi Hidai, Michael A. Robinson
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Publication number: 20040143697Abstract: A communication module operable to receive and transmit signals. The communication module includes a controller having a memory. The memory is operable to store a program, called a personality, having a plurality of performance characteristics for the receiving and transmitting of digital signals using the communication module.Type: ApplicationFiled: January 16, 2003Publication date: July 22, 2004Inventors: Peter H. Mahowald, Takashi Hidai, Frederick W. Miller, Mike Robinson
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Publication number: 20040139247Abstract: A communication module includes a switch circuit operable to connect an internal bus to an external bus for, e.g., diagnostics, verification, and fault analysis. The internal bus allows data communication between electronic components internal to the communication module, and the external bus allows data communication between at least one internal electronic component and a device external to the communication module. The switch circuit may be controlled via a programmable and password protected register within the communication module.Type: ApplicationFiled: January 15, 2003Publication date: July 15, 2004Inventors: Peter H. Mahowald, Takashi Hidai, Frederick W. Miller
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Publication number: 20040136719Abstract: A transceiver including a controller, a first memory that includes first information, and a second memory accessible by a host is provided. The controller is configured to copy the first information from the first memory to the second memory.Type: ApplicationFiled: January 15, 2003Publication date: July 15, 2004Inventors: Takashi Hidai, Michael A. Robinson, Frederick W. Miller
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Publication number: 20040135615Abstract: A system that includes a first circuit configured generate a first set of encoded signals in response to a first clock signal and a second circuit configured to generate a second set of encoded signals in response to the first clock signal is provided. The system also includes a third circuit configured to generate a first pulse signal and a second pulse signal in response to the first set of encoded signals and the second set of encoded signals, and a fourth circuit configured to generate a second clock signal in response to the first pulse signal and the second pulse signal.Type: ApplicationFiled: January 15, 2003Publication date: July 15, 2004Inventor: Takashi Hidai
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Patent number: 6597323Abstract: The present invention provides a dielectric leaky-wave antenna having a single-layer structure which is effective for realizing a highly efficient low-cost antenna in a quasi-millimeter wave zone in particular. This dielectric leaky-wave antenna includes a ground plane, a dielectric slab which is laid on one surface of the ground plane and forms a transmission guide for transmitting an electromagnetic wave from one end side to the other end side between itself and the ground plane along the surface, perturbations which are loaded on the surface of the dielectric slab along the electromagnetic wave transmission direction of the transmission guide at predetermined intervals and leak the electromagnetic wave from the surface of the dielectric slab, and a feed which supplies the electromagnetic wave to one end side of the transmission guide.Type: GrantFiled: October 22, 2001Date of Patent: July 22, 2003Assignee: Anritsu CorporationInventors: Tasuku Teshirogi, Yuki Kawahara, Takashi Hidai, Aya Yamamoto
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Publication number: 20030098815Abstract: The present invention provides a dielectric leaky-wave antenna having a single-layer structure which is effective for realizing a highly efficient low-cost antenna in a quasi-millimeter wave zone in particular. This dielectric leaky-wave antenna includes a ground plane, a dielectric slab which is laid on one surface of the ground plane and forms a transmission guide for transmitting an electromagnetic wave from one end side to the other end side between itself and the ground plane along the surface, perturbations which are loaded on the surface of the dielectric slab along the electromagnetic wave transmission direction of the transmission guide at predetermined intervals and leak the electromagnetic wave from the surface of the dielectric slab, and a feed which supplies the electromagnetic wave to one end side of the transmission guide.Type: ApplicationFiled: October 22, 2001Publication date: May 29, 2003Inventors: Tasuku Teshirogi, Yuki Kawahara, Takashi Hidai, Aya Yamamoto