Patents by Inventor Taichi Tajika
Taichi Tajika 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: 11907803Abstract: Recommended installation position and posture of a stationary code reader can be proposed to a user to facilitate installation work of the code reader by the user. An installation support device for the stationary code reader acquires camera information including a camera parameter of the code reader, code information to be read, and environment information including a conveying speed of a line, determines required field of view and depth of the code reader required to read a code under an environment specified by the environment information, and determines an installation pattern which is recommended installation position and posture of the code reader that can satisfy the required field of view and depth based on the camera information and the code information.Type: GrantFiled: March 27, 2023Date of Patent: February 20, 2024Assignee: KEYENCE CORPORATIONInventors: Hidezumi Nagata, Taichi Tajika, Takashi Hirano
-
Publication number: 20230229879Abstract: Recommended installation position and posture of a stationary code reader can be proposed to a user to facilitate installation work of the code reader by the user. An installation support device for the stationary code reader acquires camera information including a camera parameter of the code reader, code information to be read, and environment information including a conveying speed of a line, determines required field of view and depth of the code reader required to read a code under an environment specified by the environment information, and determines an installation pattern which is recommended installation position and posture of the code reader that can satisfy the required field of view and depth based on the camera information and the code information.Type: ApplicationFiled: March 27, 2023Publication date: July 20, 2023Applicant: Keyence CorporationInventors: Hidezumi NAGATA, Taichi TAJIKA, Takashi HIRANO
-
Patent number: 11640508Abstract: Recommended installation position and posture of a stationary code reader can be proposed to a user to facilitate installation work of the code reader by the user. An installation support device for the stationary code reader acquires camera information including a camera parameter of the code reader, code information to be read, and environment information including a conveying speed of a line, determines required field of view and depth of the code reader required to read a code under an environment specified by the environment information, and determines an installation pattern which is recommended installation position and posture of the code reader that can satisfy the required field of view and depth based on the camera information and the code information.Type: GrantFiled: March 3, 2022Date of Patent: May 2, 2023Assignee: KEYENCE CORPORATIONInventors: Hidezumi Nagata, Taichi Tajika, Takashi Hirano
-
Publication number: 20220188533Abstract: Recommended installation position and posture of a stationary code reader can be proposed to a user to facilitate installation work of the code reader by the user. An installation support device for the stationary code reader acquires camera information including a camera parameter of the code reader, code information to be read, and environment information including a conveying speed of a line, determines required field of view and depth of the code reader required to read a code under an environment specified by the environment information, and determines an installation pattern which is recommended installation position and posture of the code reader that can satisfy the required field of view and depth based on the camera information and the code information.Type: ApplicationFiled: March 3, 2022Publication date: June 16, 2022Applicant: Keyence CorporationInventors: Hidezumi NAGATA, Taichi TAJIKA, Takashi HIRANO
-
Patent number: 11301659Abstract: Recommended installation position and posture of a stationary code reader can be proposed to a user to facilitate installation work of the code reader by the user. An installation support device for the stationary code reader acquires camera information including a camera parameter of the code reader, code information to be read, and environment information including a conveying speed of a line, determines required field of view and depth of the code reader required to read a code under an environment specified by the environment information, and determines an installation pattern which is recommended installation position and posture of the code reader that can satisfy the required field of view and depth based on the camera information and the code information.Type: GrantFiled: February 22, 2021Date of Patent: April 12, 2022Assignee: KEYENCE CORPORATIONInventors: Hidezumi Nagata, Taichi Tajika, Takashi Hirano
-
Publication number: 20210295001Abstract: Recommended installation position and posture of a stationary code reader can be proposed to a user to facilitate installation work of the code reader by the user. An installation support device for the stationary code reader acquires camera information including a camera parameter of the code reader, code information to be read, and environment information including a conveying speed of a line, determines required field of view and depth of the code reader required to read a code under an environment specified by the environment information, and determines an installation pattern which is recommended installation position and posture of the code reader that can satisfy the required field of view and depth based on the camera information and the code information.Type: ApplicationFiled: February 22, 2021Publication date: September 23, 2021Applicant: Keyence CorporationInventors: Hidezumi NAGATA, Taichi TAJIKA, Takashi HIRANO
-
Patent number: 10902231Abstract: The optical code reader includes a light-receiving region limiting optical member 122. The light-receiving region limiting optical member 122 is disposed between a transparent window 8 and an image sensor 102 and includes an imaging lens 100 for imaging reflected light received through the transparent window 8, on a light receiving surface 108 of the image sensor 102. The light-receiving region limiting optical member 122 forms an image Im(1) of an optical code Co in a first light receiving region 108(1) of the light receiving surface 108 and forms an image Im(2) of an optical code Co in a second light receiving region 108 (2) that is different from the first light receiving region 108(1). The image sensor 102 is disposed obliquely to a direction orthogonal to an optical axis Oax of the imaging lens 100.Type: GrantFiled: October 22, 2019Date of Patent: January 26, 2021Assignee: KEYENCE CORPORATIONInventors: Taichi Tajika, Hideaki Miyoshi
-
Patent number: 10747976Abstract: Provided is an optical information reading device that can reduce an installation load on a user, and can accurately read a code provided to each of various workpieces. A polarized illumination light source includes light emitters that irradiate the workpiece with illumination light through a polarization filter. A non-polarized illumination light source includes light emitters that irradiate the workpiece with illumination light without through a polarization filter. An imaging element is provided with a polarization filter having a polarization direction different from a polarization direction of the polarization filter of the light emitters. Either of the polarized illumination light source and the non-polarized illumination light source is used in accordance with the workpiece.Type: GrantFiled: October 25, 2018Date of Patent: August 18, 2020Assignee: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Yusuke Otsubo
-
Publication number: 20200160014Abstract: The optical code reader includes a light-receiving region limiting optical member 122. The light-receiving region limiting optical member 122 is disposed between a transparent window 8 and an image sensor 102 and includes an imaging lens 100 for imaging reflected light received through the transparent window 8, on a light receiving surface 108 of the image sensor 102. The light-receiving region limiting optical member 122 forms an image Im(1) of an optical code Co in a first light receiving region 108(1) of the light receiving surface 108 and forms an image Im(2) of an optical code Co in a second light receiving region 108 (2) that is different from the first light receiving region 108(1). The image sensor 102 is disposed obliquely to a direction orthogonal to an optical axis Oax of the imaging lens 100.Type: ApplicationFiled: October 22, 2019Publication date: May 21, 2020Applicant: Keyence CorporationInventors: Taichi TAJIKA, Hideaki MIYOSHI
-
Patent number: 10515249Abstract: [Object] To enhance accuracy at the time of setting with consideration of a cell size of a code when an exposure time is automatically set. [Means to solve the problems] An upper limit of an exposure time of an imaging part as a restriction condition for reading a code attached to a workpiece is calculated based on a moving speed of the workpiece, which is inputted by an input part, and a cell size, which is calculated by a cell size calculation part. An exposure time of the imaging part is set within the restriction condition by analyzing a plurality of images, which includes a code and is obtained by taking images multiple times by changing the exposure time of the imaging part.Type: GrantFiled: February 22, 2019Date of Patent: December 24, 2019Assignee: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Hiroomi Ohori, Taiga Nomi
-
Publication number: 20190188437Abstract: [Object] To enhance accuracy at the time of setting with consideration of a cell size of a code when an exposure time is automatically set. [Means to solve the problems] An upper limit of an exposure time of an imaging part as a restriction condition for reading a code attached to a workpiece is calculated based on a moving speed of the workpiece, which is inputted by an input part, and a cell size, which is calculated by a cell size calculation part. An exposure time of the imaging part is set within the restriction condition by analyzing a plurality of images, which includes a code and is obtained by taking images multiple times by changing the exposure time of the imaging part.Type: ApplicationFiled: February 22, 2019Publication date: June 20, 2019Applicant: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Hiroomi Ohori, Taiga Nomi
-
Patent number: 10268853Abstract: [Object] To enhance a reading accuracy of a code even when a light amount, which can be received by an imaging element, varies greatly. [Means to solve the problems] A plurality of second images in response to a plurality of different conversion characteristics is generated by using the first image obtained at the time of setting of an optical information reading device. The results, in which codes included in the generated second images are respectively decoded by a decoding part, are analyzed, and one of the conversion characteristics is selected. The second image in response to the selected conversion characteristic is generated by using the first image at the time of operation of the optical information reading device.Type: GrantFiled: December 21, 2017Date of Patent: April 23, 2019Assignee: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Hiroomi Ohori, Taiga Nomi
-
Patent number: 10262177Abstract: [Object] To enhance accuracy at the time of setting with consideration of a cell size of a code when an exposure time is automatically set. [Means to solve the problems] An upper limit of an exposure time of an imaging part as a restriction condition for reading a code attached to a workpiece is calculated based on a moving speed of the workpiece, which is inputted by an input part, and a cell size, which is calculated by a cell size calculation part. An exposure time of the imaging part is set within the restriction condition by analyzing a plurality of images, which includes a code and is obtained by taking images multiple times by changing the exposure time of the imaging part.Type: GrantFiled: December 21, 2017Date of Patent: April 16, 2019Assignee: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Hiroomi Ohori, Taiga Nomi
-
Publication number: 20190065800Abstract: Provided is an optical information reading device that can reduce an installation load on a user, and can accurately read a code provided to each of various workpieces. A polarized illumination light source includes light emitters that irradiate the workpiece with illumination light through a polarization filter. A non-polarized illumination light source includes light emitters that irradiate the workpiece with illumination light without through a polarization filter. An imaging element is provided with a polarization filter having a polarization direction different from a polarization direction of the polarization filter of the light emitters. Either of the polarized illumination light source and the non-polarized illumination light source is used in accordance with the workpiece.Type: ApplicationFiled: October 25, 2018Publication date: February 28, 2019Applicant: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Yusuke Otsubo
-
Patent number: 10146977Abstract: Provided is an optical information reading device that can reduce an installation load on a user, and can accurately read a code provided to each of various workpieces. A polarized illumination light source includes light emitters that irradiate the workpiece with illumination light through a polarization filter. A non-polarized illumination light source includes light emitters that irradiate the workpiece with illumination light without through a polarization filter. An imaging element is provided with a polarization filter having a polarization direction different from a polarization direction of the polarization filter of the light emitters. Either of the polarized illumination light source and the non-polarized illumination light source is used in accordance with the workpiece.Type: GrantFiled: February 13, 2018Date of Patent: December 4, 2018Assignee: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Yusuke Otsubo
-
Publication number: 20180239937Abstract: [Object] To enhance a reading accuracy of a code even when a light amount, which can be received by an imaging element, varies greatly. [Means to solve the problems] A plurality of second images in response to a plurality of different conversion characteristics is generated by using the first image obtained at the time of setting of an optical information reading device. The results, in which codes included in the generated second images are respectively decoded by a decoding part, are analyzed, and one of the conversion characteristics is selected. The second image in response to the selected conversion characteristic is generated by using the first image at the time of operation of the optical information reading device.Type: ApplicationFiled: December 21, 2017Publication date: August 23, 2018Applicant: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Hiroomi Ohori, Taiga Nomi
-
Publication number: 20180239938Abstract: [Object] To enhance accuracy at the time of setting with consideration of a cell size of a code when an exposure time is automatically set. [Means to solve the problems] An upper limit of an exposure time of an imaging part as a restriction condition for reading a code attached to a workpiece is calculated based on a moving speed of the workpiece, which is inputted by an input part, and a cell size, which is calculated by a cell size calculation part. An exposure time of the imaging part is set within the restriction condition by analyzing a plurality of images, which includes a code and is obtained by taking images multiple times by changing the exposure time of the imaging part.Type: ApplicationFiled: December 21, 2017Publication date: August 23, 2018Applicant: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Hiroomi Ohori, Taiga Nomi
-
Publication number: 20180225491Abstract: Provided is an optical information reading device that can reduce an installation load on a user, and can accurately read a code provided to each of various workpieces. A polarized illumination light source includes light emitters that irradiate the workpiece with illumination light through a polarization filter. A non-polarized illumination light source includes light emitters that irradiate the workpiece with illumination light without through a polarization filter. An imaging element is provided with a polarization filter having a polarization direction different from a polarization direction of the polarization filter of the light emitters. Either of the polarized illumination light source and the non-polarized illumination light source is used in accordance with the workpiece.Type: ApplicationFiled: February 13, 2018Publication date: August 9, 2018Applicant: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Yusuke Otsubo
-
Patent number: 9946910Abstract: Provided is an optical information reading device that can reduce an installation load on a user, and can accurately read a code provided to each of various workpieces. A polarized illumination light source includes light emitters that irradiate the workpiece with illumination light through a polarization filter. A non-polarized illumination light source includes light emitters that irradiate the workpiece with illumination light without through a polarization filter. An imaging element is provided with a polarization filter having a polarization direction different from a polarization direction of the polarization filter of the light emitters. Either of the polarized illumination light source and the non-polarized illumination light source is used in accordance with the workpiece.Type: GrantFiled: December 2, 2016Date of Patent: April 17, 2018Assignee: Keyence CorporationInventors: Hidezumi Nagata, Taichi Tajika, Yusuke Otsubo
-
Patent number: 9754146Abstract: A portable optical reader is provided with LED light sources 2911 to 2914; a diffusion plate 23 diffusing the light emitted from the LED light sources 2911 to 2914; an opening 2431 formed on the diffusion plate 23 transmitting diffusion reflecting light; an imaging part 41 receiving the diffusion reflecting light through the opening 2431; a LED light source 2915 emitting the light to the symbol; a light projection polarizing element 242 polarizing the light emitted from the LED light source 2915; an opening 2432 formed in the diffusion plate 23 transmitting the polarized light emitted from the LED light source 2915; and a light reception polarizing element 241 polarizing the diffusion reflecting light which is the polarized light emitted from the LED light source 2915 and reflected on the symbol and transmitted through the opening 2431.Type: GrantFiled: October 20, 2016Date of Patent: September 5, 2017Assignee: Keyence CorporationInventors: Tomomi Izaki, Taichi Tajika