Patents by Inventor Tadashi Kawata
Tadashi Kawata 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: 20150055678Abstract: Provided is an information acquisition device for an object to be measured that smoothly acquires various types of information on an object to be measured even in the dark. The information acquisition device for an object to be measured includes: an imaging device which generates a pickup image regarding an image pickup range; a distance calculation unit which calculates a distance to the object to be measured based on the reflected light of modulated light emitted toward the image pickup range; a temperature detection device which detects a temperature of each image pickup section of the image pickup range corresponding to each image section of the pickup image; and an information acquisition unit which acquires information on the object to be measured based on the distance to the object to be measured and the temperature of each image pickup section detected by the temperature detection device.Type: ApplicationFiled: March 7, 2013Publication date: February 26, 2015Applicant: STANLEY ELECTRIC CO., LTD.Inventor: Tadashi Kawata
-
Patent number: 8710561Abstract: A pixel structure of a solid-state image sensor in which residual electrons in a photodiode is reduced and which has a first-stage gate that is arranged adjacent to the photodiode and controls read-out of electrons generated in the photodiode, a second-stage gate that is adjacent to the first-stage gate on the rear stage of the gate at a predetermined gap and controls movement of electrons read out by the readout control of the first-stage gate to the plurality of the charge-storage sections, and a plurality of third-stage gates that are adjacent to the second-stage gate on the rear stage of the gate at a predetermined gap, severally arranged corresponding to the plurality of the charge-storage sections, and perform control of distributing the electrons moved by the movement control of the second-stage gate severally to the plurality of the charge-storage sections, and gradient on which electrons are moved in the first-stage gate direction is formed on the potential of the photodiode.Type: GrantFiled: May 11, 2009Date of Patent: April 29, 2014Assignees: Brainvision Inc., Stanley Electric Co., Ltd.Inventors: Michinori Ichikawa, Takanori Tanite, Tadashi Kawata, Ryohoi Ikono
-
Patent number: 8218024Abstract: The disclosed subject matter is directed to solid state cameras and sensor systems that include a pickup surface thereof with both a distance detecting area for measuring a distance from a moving object and a movement detecting area for detecting the object's movement. The device can also include an optical communication area for communicating with an outside communication device. Therefore, the device enables a single pickup surface to include at least the following three functions: distance measurement; movement detection; and optical communication. The above-described sensor systems can output a control signal for collision avoidance with stationary or moving obstacle(s) by using the solid state camera. Because the sensor system can be integrated as a single chip IC with a small size, the system is useful as a sensor device in a vehicle, a robot, and the like.Type: GrantFiled: October 4, 2007Date of Patent: July 10, 2012Assignee: Stanley Electric Co., Ltd.Inventors: Tadashi Kawata, Michinori Ichikawa, Fumio Kubo, Yutaka Ishiyama, Ryouhei Ikeno
-
Patent number: 8120761Abstract: The disclosed subject matter relates to a method and apparatus for position judgment, which can include a plurality of light sources and a photo-detector. The plurality of light sources can be configured to emit a plurality of pulsed lights towards an object from different directions, and a photo-detector can be configured to serially detect the light reflected from the object. A determination of whether the object is moving further away or coming closer to the apparatus can be judged by calculating at least one of a position, an area and a brightness of the object from the reflected light and comparing the data with the previous data for the same value(s). Thus, because the method of the disclosed subject matter does not require a measurement of time as in the conventional methods, the method can result in providing a similar apparatus with a simple configuration and at a low cost, and can be used as a sensor for detecting an obstacle and the like in a vehicle, alarm system, etc.Type: GrantFiled: November 2, 2007Date of Patent: February 21, 2012Assignee: Stanley Electric Co., Ltd.Inventors: Tadashi Kawata, Michinori Ichikawa, Fumio Kubo, Yutaka Ishiyama
-
Patent number: 7697119Abstract: A range image generating apparatus capable of preventing or reducing generation of range images with interference, which contain e.g., pixels with erroneous distance values is provided. The range image generating apparatus includes: a light source radiating a light; an image pickup element; a range image generating unit; a frequency changing unit that changes a modulation frequency for each frame rate or charge storage time; and a control unit that controls the light source and the image pickup element in synchronization with the modulation frequency changed by the frequency changing unit.Type: GrantFiled: November 11, 2008Date of Patent: April 13, 2010Assignee: Stanley Electric Co., Ltd.Inventors: Ryohei Ikeno, Tadashi Kawata, Hideki Urabe
-
Patent number: 7683954Abstract: A solid-state image sensor of a charge sorting method used in a time-of-flight measurement method, in which noise derived from background light, which is caused by the reflection light from the subject derived from background light is eliminated, reflection light from the subject derived from a predetermined light source, which is previously set in the solid-state image sensor, is effectively extracted as a signal component to achieve high sensitivity and low noise, which is a solid-state image sensor that is equipped with a plurality of charge-storage sections, discriminates photoelectrons generated by incoming light on the incoming timing and sort to the above-described plurality of charge-storage sections, and measures the timing of the incoming light, in which the sensor has: a plurality of capacitors that capable of conducting to the plurality of charge-storage sections; and a control section that controls a conducted state between the above-described plurality of charge-storage sections and the above-deType: GrantFiled: September 27, 2007Date of Patent: March 23, 2010Assignees: Brainvision Inc., Stanley Electric Co., Ltd.Inventors: Michinori Ichikawa, Takanori Tanite, Tadashi Kawata
-
Patent number: 7645974Abstract: The disclosed subject matter relates to a method and distance measurement apparatus for measuring a distance to an object, which can include a light source, a solid state camera, a controller and a distance data generator. The light source can be configured to emit a modulated light towards an object, and the solid state camera can convert the light reflected from the object into charges. The distance data generator can be configured to calculate the distance based on the charges, and the controller can be configured to adjust the modulated light to be more favorable under various circumstances. Thus, the method of the disclosed subject matter can accurately measure distance under various circumstances and can result in providing a distance measurement apparatus with a simple configuration and at low cost, and can be used as a sensor for distance measurement of an obstacle and the like in a vehicle, security system, robot, etc.Type: GrantFiled: March 27, 2008Date of Patent: January 12, 2010Assignee: Stanley Electric Co., Ltd.Inventors: Ryohei Ikeno, Tadashi Kawata, Fumio Kubo
-
Publication number: 20090278174Abstract: A pixel structure of a solid-state image sensor in which residual electrons in a photodiode is reduced and which has a first-stage gate that is arranged adjacent to the photodiode and controls read-out of electrons generated in the photodiode, a second-stage gate that is adjacent to the first-stage gate on the rear stage of the gate at a predetermined gap and controls movement of electrons read out by the readout control of the first-stage gate to the plurality of the charge-storage sections, and a plurality of third-stage gates that are adjacent to the second-stage gate on the rear stage of the gate at a predetermined gap, severally arranged corresponding to the plurality of the charge-storage sections, and perform control of distributing the electrons moved by the movement control of the second-stage gate severally to the plurality of the charge-storage sections, and gradient on which electrons are moved in the first-stage gate direction is formed on the potential of the photodiode.Type: ApplicationFiled: May 11, 2009Publication date: November 12, 2009Applicants: Brainvision Inc., STANLEY ELECTRIC CO., LTD.Inventors: Michinori Ichikawa, Takanori Tanite, Tadashi Kawata, Ryohei Ikeno
-
Publication number: 20090122297Abstract: A range image generating apparatus capable of preventing or reducing generation of range images with interference which contain e.g., pixels with erroneous distance values is provided. The range image generating apparatus includes: a light source radiating a light; an image pickup element; a range image generating unit; a frequency changing unit that changes a modulation frequency for each frame rate or charge storage time; and a control unit that controls the light source and the image pickup element in synchronization with the modulation frequency changed by the frequency changing unit.Type: ApplicationFiled: November 11, 2008Publication date: May 14, 2009Applicant: Stanley Electric Co., Ltd.Inventors: Ryohei Ikeno, Tadashi Kawata, Hideki Urabe
-
Publication number: 20090057673Abstract: To eliminate uneven distribution of electrons caused by variation in threshold voltages of gates for distributing electrons and to have sensitivity in a long wavelength in a pixel structure of a solid-state image sensor of a charge sorting method, the structure has: a photodiode that generates electrons by photoelectric conversion; a plurality of charge-storage sections that store electrons generated in the photodiode; and a gate structure that is arranged between the photodiode and the charge-storage sections and controls transfer of electrons generated in the photodiode to the plurality of charge-storage sections, in which the gate structure is made up of plural stages of gates, and the plural stages of gates at least have: a front stage gate that is arranged adjacent to the photodiode and controls readout of electrons generated in the photodiode; and a rear stage gate that is arranged adjacent to the plurality of charge-storage sections on the rear stage of the front stage gate and performs control of distType: ApplicationFiled: July 10, 2008Publication date: March 5, 2009Applicants: Brainvision Inc., STANLEY ELECTRIC CO., LTD.Inventors: Michinori Ichikawa, Takanori Tanite, Tadashi Kawata
-
Publication number: 20080237445Abstract: The disclosed subject matter relates to a method and distance measurement apparatus for measuring a distance to an object, which can include a light source, a solid state camera, a controller and a distance data generator. The light source can be configured to emit a modulated light towards an object, and the solid state camera can convert the light reflected from the object into charges. The distance data generator can be configured to calculate the distance based on the charges, and the controller can be configured to adjust the modulated light to be more favorable under various circumstances. Thus, the method of the disclosed subject matter can accurately measure distance under various circumstances and can result in providing a distance measurement apparatus with a simple configuration and at low cost, and can be used as a sensor for distance measurement of an obstacle and the like in a vehicle, security system, robot, etc.Type: ApplicationFiled: March 27, 2008Publication date: October 2, 2008Inventors: Ryohei IKENO, Tadashi Kawata, Fumio Kubo
-
Publication number: 20080186475Abstract: The disclosed subject matter relates to a method and apparatus for position judgment, which can include a plurality of light sources and a photo-detector. The plurality of light sources can be configured to emit a plurality of pulsed lights towards an object from different directions, and a photo-detector can be configured to serially detect the light reflected from the object. A determination of whether the object is moving further away or coming closer to the apparatus can be judged by calculating at least one of a position, an area and a brightness of the object from the reflected light and comparing the data with the previous data for the same value(s). Thus, because the method of the disclosed subject matter does not require a measurement of time as in the conventional methods, the method can result in providing a similar apparatus with a simple configuration and at a low cost, and can be used as a sensor for detecting an obstacle and the like in a vehicle, alarm system, etc.Type: ApplicationFiled: November 2, 2007Publication date: August 7, 2008Inventors: Tadashi Kawata, Michinori Ichikawa, Fumio Kubo, Yutaka Ishiyama
-
Publication number: 20080170142Abstract: The disclosed subject matter is directed to solid state cameras and sensor systems that include a pickup surface thereof with both a distance detecting area for measuring a distance from a moving object and a movement detecting area for detecting the object's movement. The device can also include an optical communication area for communicating with an outside communication device. Therefore, the device enables a single pickup surface to include at least the following three functions: distance measurement; movement detection; and optical communication. The above-described sensor systems can output a control signal for collision avoidance with stationary or moving obstacle(s) by using the solid state camera. Because the sensor system can be integrated as a single chip IC with a small size, the system is useful as a sensor device in a vehicle, a robot, and the like.Type: ApplicationFiled: October 4, 2007Publication date: July 17, 2008Inventors: Tadashi Kawata, Michinori Ichikawa, Fumio Kubo, Yutaka Ishiyama, Ryouhei Ikeno
-
Publication number: 20080079833Abstract: A solid-state image sensor of a charge sorting method used in a time-of-flight measurement method, in which noise derived from background light, which is caused by the reflection light from the subject derived from background light is eliminated, reflection light from the subject derived from a predetermined light source, which is previously set in the solid-state image sensor, is effectively extracted as a signal component to achieve high sensitivity and low noise, which is a solid-state image sensor that is equipped with a plurality of charge-storage sections, discriminates photoelectrons generated by incoming light on the incoming timing and sort to the above-described plurality of charge-storage sections, and measures the timing of the incoming light, in which the sensor has: a plurality of capacitors that capable of conducting to the plurality of charge-storage sections; and a control section that controls a conducted state between the above-described plurality of charge-storage sections and the above-deType: ApplicationFiled: September 27, 2007Publication date: April 3, 2008Inventors: Michinori Ichikawa, Takanori Tanite, Tadashi Kawata
-
Patent number: 4436809Abstract: A method for light-shielding a roll photographic film wherein a backing paper comprising a support, a print layer and at least one aluminum layer on the support is employed.Type: GrantFiled: November 6, 1981Date of Patent: March 13, 1984Assignee: Fuji Photo Film Co., Ltd.Inventors: Mutsuo Akao, Tadashi Kawata
-
Patent number: 4356224Abstract: Material for use in wrapping photographic light-sensitive material is described, including a resin layer comprising a thermoplastic resin having an aluminum paste or powder dispersed therein; this material has desirable characteristics for such a wrapping material and can be economically produced.Type: GrantFiled: June 2, 1980Date of Patent: October 26, 1982Assignee: Fuji Photo Film Co., Ltd.Inventors: Mutsuo Akao, Tadashi Kawata