Patents by Inventor Hironori Nakahara
Hironori Nakahara 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).
-
Publication number: 20240088906Abstract: Provided are a semiconductor integrated circuit and an imaging device capable of reducing power consumption without complicating a configuration of oscillation control. A semiconductor integrated circuit includes an oscillator that generates an oscillation signal whose oscillation frequency is discretely adjustable on the basis of a digital control input signal, an oscillation controller that generates the digital control input signal, and an intermittent controller that generates an intermittent control signal and supplies the intermittent control signal to the oscillation controller so that the oscillation controller intermittently updates the digital control input signal.Type: ApplicationFiled: January 26, 2022Publication date: March 14, 2024Inventors: VAN TUAN PHAM, HIRONORI NAKAHARA, MASAHISA TAMURA
-
Publication number: 20230253927Abstract: [Object] To provide an electronic device and an electroacoustic conversion apparatus that can suppress noise. [Solving Means] According to the present disclosure, there is provided an electronic device including a switching element unit that applies a voltage based on a direct-current power supply to one end of an electroacoustic converter in response to a first pulse signal and applies a voltage based on the direct-current power supply to another end of the electroacoustic converter in response to a second pulse signal, and a delay circuit that generates a delay based on a communication frequency in at least one of the first pulse signal and the second pulse signal.Type: ApplicationFiled: June 22, 2021Publication date: August 10, 2023Inventors: HIRONORI NAKAHARA, DAISUKE MIYAZAKI
-
Patent number: 11714110Abstract: The present technology is to provide a detector capable of detecting an input voltage outside the guaranteed operating voltage range, even if the delay time caused in a logic element by a decrease in power-supply voltage varies due to an external factor. The detector includes a plurality of first detection circuits, a first detection rate calculation unit, a plurality of second detection circuits, a second detection rate calculation unit, and a comparison determination unit. Each of the plurality of first detection circuits detects whether or not an input voltage has a value outside a guaranteed operating range for a normal operation. The first detection rate calculation unit calculates a first detection rate of the detected number of the first detection circuits, and each of the plurality of second detection circuits detects whether or not a predetermined reference voltage is lower than a threshold voltage.Type: GrantFiled: January 8, 2020Date of Patent: August 1, 2023Assignee: SONY SEMICONDUCTOR SOLUTIONS CORPORATIONInventor: Hironori Nakahara
-
Publication number: 20220026473Abstract: The present technology is to provide a detector capable of detecting an input voltage outside the guaranteed operating voltage range, even if the delay time caused in a logic element by a decrease in power-supply voltage varies due to an external factor. The detector includes a plurality of first detection circuits, a first detection rate calculation unit, a plurality of second detection circuits, a second detection rate calculation unit, and a comparison determination unit.Type: ApplicationFiled: January 8, 2020Publication date: January 27, 2022Inventor: HIRONORI NAKAHARA
-
Patent number: 10650855Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.Type: GrantFiled: June 28, 2019Date of Patent: May 12, 2020Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
-
Publication number: 20190325909Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.Type: ApplicationFiled: June 28, 2019Publication date: October 24, 2019Applicant: Mitsubishi Electric CorporationInventors: Hironori NAKAHARA, Nobuo TAKESHITA, Masaharu OGAWA
-
Patent number: 10381037Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.Type: GrantFiled: May 18, 2018Date of Patent: August 13, 2019Assignee: Mitsubishi Electric CorporationInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
-
Patent number: 10254551Abstract: A virtual image display device includes a light source unit, a polarization switching unit, an image generation unit, an optical path unit and a projection unit. The polarization switching unit switches a polarization direction of a light beam emitted from the light source unit. The optical path unit includes a first optical path through which the light beam having the first polarization direction travels and a second optical path through which the light beam having the second polarization direction travels. A first virtual image is displayed at a first distance with the light beam that has traveled through the first optical path. A second virtual image is displayed at a second distance farther than the first distance with the light beam that has traveled through the second optical path.Type: GrantFiled: March 26, 2015Date of Patent: April 9, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Tomo Kishigami, Hironori Nakahara, Nozomi Nakagawa
-
Patent number: 10194083Abstract: A wobble detection device includes a sensor unit. The sensor unit includes a one-dimensional image sensor and a one-dimensional image sensor arranged side by side in an auxiliary scanning direction so that their corresponding pixels coincide with each other in a main scanning direction, and acquires an image of an object moving in the auxiliary scanning direction as one-dimensional data. The wobble detection device makes a comparison of data corresponding to the same image region by using one-dimensional data acquired by the one-dimensional image sensor and one-dimensional data acquired by the one-dimensional image sensor and thereby detects a movement amount of the image in the main scanning direction between a time when the one-dimensional data used for the comparison was acquired and a time when the one-dimensional data used for the comparison was acquired.Type: GrantFiled: December 22, 2016Date of Patent: January 29, 2019Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hironori Nakahara, Nobou Takeshita
-
Publication number: 20180309929Abstract: A wobble detection device includes a sensor unit. The sensor unit includes a one-dimensional image sensor and a one-dimensional image sensor arranged side by side in an auxiliary scanning direction so that their corresponding pixels coincide with each other in a main scanning direction, and acquires an image of an object moving in the auxiliary scanning direction as one-dimensional data. The wobble detection device makes a comparison of data corresponding to the same image region by using one-dimensional data acquired by the one-dimensional image sensor and one-dimensional data acquired by the one-dimensional image sensor and thereby detects a movement amount of the image in the main scanning direction between a time when the one-dimensional data used for the comparison was acquired and a time when the one-dimensional data used for the comparison was acquired.Type: ApplicationFiled: December 22, 2016Publication date: October 25, 2018Applicant: Mitsubishi Electric CorporationInventors: Hironori NAKAHARA, Nobuo TAKESHITA
-
Publication number: 20180268857Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.Type: ApplicationFiled: May 18, 2018Publication date: September 20, 2018Applicant: Mitsubishi Electric CorporationInventors: Hironori NAKAHARA, Nobuo TAKESHITA, Masaharu OGAWA
-
Patent number: 10002634Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.Type: GrantFiled: June 27, 2017Date of Patent: June 19, 2018Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
-
Patent number: 9817233Abstract: The image display device (100) provides images perceivable from the area of the eye box (E), and includes a light source unit (110), a screen (140), a scanning unit (130) and an optical system (155). The screen (140) has a single micro lens array (1) on which multiple micro lenses (3) are arranged. The scanning unit (130) includes a mirror (130a) to reflect beams emitted from the light source unit (110), and swings the mirror (130a) around a pivot center (130c) to scan the beams thereover, thereby generating images. The optical system (155) brings the images formed on the screen (140) to the eye box (E). An angle (?out) formed between a zero-order diffracted beam and a first-order diffracted beam, which are among a luminous flux of beams diffracted by the screen (140) and pass through the center of the eye box (E), is smaller than a minimum visual angle (Vmin).Type: GrantFiled: August 25, 2015Date of Patent: November 14, 2017Assignee: Mitsubishi Electric CorporationInventors: Nozomi Nakagawa, Hironori Nakahara, Tomo Kishigami, Nobuo Takeshita
-
Patent number: 9800844Abstract: An image projection apparatus (1) joins a plurality of display images displayed by scanning a plurality of light beams, as if there is no seam between them, thereby displaying a large-sized high-quality image. The image projection apparatus (1) includes a MEMS mirror device (11), a MEMS mirror control unit (13), and a laser beam detector (19).Type: GrantFiled: April 18, 2014Date of Patent: October 24, 2017Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hironori Nakahara, Tomo Kishigami, Toshiya Matozaki, Nobuo Takeshita
-
Publication number: 20170294204Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.Type: ApplicationFiled: June 27, 2017Publication date: October 12, 2017Applicant: Mitsubishi Electric CorporationInventors: Hironori NAKAHARA, Nobuo TAKESHITA, Masaharu OGAWA
-
Publication number: 20170285341Abstract: The image display device (100) provides images perceivable from the area of the eye box (E), and includes a light source unit (110), a screen (140), a scanning unit (130) and an optical system (155). The screen (140) has a single micro lens array (1) on which multiple micro lenses (3) are arranged. The scanning unit (130) includes a mirror (130a) to reflect beams emitted from the light source unit (110), and swings the mirror (130a) around a pivot center (130c) to scan the beams thereover, thereby generating images. The optical system (155) brings the images formed on the screen (140) to the eye box (E). An angle (?out) formed between a zero-order diffracted beam and a first-order diffracted beam, which are among a luminous flux of beams diffracted by the screen (140) and pass through the center of the eye box (E), is smaller than a minimum visual angle (Vmin).Type: ApplicationFiled: August 25, 2015Publication date: October 5, 2017Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Nozomi NAKAGAWA, Hironori NAKAHARA, Tomo KISHIGAMI, Nobuo TAKESHITA
-
Patent number: 9741387Abstract: In a multilayer optical disc having information layers conforming to a plurality of different optical disc standards, because the type of each information layer is not recorded in the other information layers, in read and write operations by a compatible optical disc device conforming to a plurality of optical disc standards, every time the information layer being accessed changes, it has been necessary to read the type of the information layer and select a method of generating a tracking error signal adapted to the type of information layer, so access has taken time. In order to solve the above problem, in the optical multilayer disc according to the present invention, having information layers conforming to a plurality of different optical disc standards, in an area in one of the information layers, information about the other information layers is recorded. The time required to access the other information layers can be reduced by using this information to select a tracking error signal generating method.Type: GrantFiled: August 20, 2015Date of Patent: August 22, 2017Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Hironori Nakahara, Nobuo Takeshita, Masaharu Ogawa
-
Publication number: 20170146803Abstract: A virtual image display device includes a light source unit, a polarization switching unit, an image generation unit, an optical path unit and a projection unit. The polarization switching unit switches a polarization direction of a light beam emitted from the light source unit. The optical path unit includes a first optical path through which the light beam having the first polarization direction travels and a second optical path through which the light beam having the second polarization direction travels. A first virtual image is displayed at a first distance with the light beam that has traveled through the first optical path. A second virtual image is displayed at a second distance farther than the first distance with the light beam that has traveled through the second optical path.Type: ApplicationFiled: March 26, 2015Publication date: May 25, 2017Applicant: MITSUBISHI ELECTRIC CORPORATIONInventors: Tomo KISHIGAMI, Hironori NAKAHARA, Nozomi NAKAGAWA
-
Patent number: 9488829Abstract: An optical scanning device includes a first scanning driving unit and a second scanning driving unit. The first scanning driving unit includes a scanning mirror and a frame structure supporting the scanning mirror. The first scanning driving unit is configured to cause the scanning mirror to rotate about a first rotation axis by means of deformation of the frame structure. The second scanning driving unit includes a rotation holder supporting the first scanning driving unit and a supporting shaft. The second scanning driving unit is configured to cause the rotation holder to rotate about the second rotation axis. The frame structure includes a pair of beams provided so as to sandwich the scanning mirror in a direction of the first rotation axis, and a pair of base portions provided on sides of respective beams of the pair of beams opposite to the scanning mirror. Each of the pair of base portions has an elongated shape elongated in a direction of the second rotation axis, and is deformable.Type: GrantFiled: September 3, 2013Date of Patent: November 8, 2016Assignee: Mitsubishi Electric CorporationInventors: Toshiya Matozaki, Hironori Nakahara, Nobuo Takeshita
-
Patent number: 9470889Abstract: A laser scanning device includes: a plurality of laser light sources, each of the plurality of laser light sources emitting a laser light having a light intensity distribution having an elliptical shape; an aperture through which the laser lights emitted from the plurality of laser light sources pass; and a scanning mirror for reflecting the laser lights from the aperture to a scan position. A position of the aperture is adjustable in a first adjustment direction. The plurality of laser light sources are oriented so that long axis directions of the light intensity distributions of the laser lights emitted by the plurality of laser light sources are parallel to the first adjustment direction at positions at which the laser lights emitted by the plurality of laser light sources enter the aperture.Type: GrantFiled: June 5, 2014Date of Patent: October 18, 2016Assignee: MITSUBISHI ELECTRIC CORPORATIONInventors: Toshiya Matozaki, Hironori Nakahara, Tomo Kishigami, Nobuo Takeshita