Patents by Inventor Moshe Haim
Moshe Haim 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: 11223316Abstract: Methods and control apparatus for operating a three-phase electric motor are described, in which the motor windings are switched between Star and Delta connections depending on torque requirements, and in which the motor windings are switched to a braking mode when braking torque is required. The electromagnetic torque of the motor is monitored, and a command to switch from Star to Delta is given when the electromagnetic torque rises to reach or exceed a threshold.Type: GrantFiled: March 31, 2017Date of Patent: January 11, 2022Assignee: Power Drive Efficiency Ltd.Inventors: Igor Alexander Turevsky, Moshe Haim Naiman, Arthur Naiman
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Publication number: 20210389711Abstract: In an example, a method includes printing a set of images by transferring print agent between a roller of a print agent source and an electrophotographic surface in a plurality of transfer operations, wherein the roller is controlled to have a first voltage profile during each of the transfer operations. A variation in optical density which is consistent across the set of printed images may be detected, and a second voltage profile correction may be determined based on the variation in optical density. The method may further comprise printing a subsequent image by transferring print agent between the print agent source roller and the electrophotographic surface in a subsequent transfer operation, wherein the roller is controlled to have the second voltage profile during the subsequent transfer operation.Type: ApplicationFiled: August 27, 2021Publication date: December 16, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Moshe Haim, Tsafrir Yedid Am, Rivay Mor, Iliya Shahamov
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Patent number: 11131951Abstract: In an example, a method includes printing a set of images by transferring print agent between a roller of a print agent source and an electrophotographic surface in a plurality of transfer operations, wherein the roller is controlled to have a first voltage profile during each of the transfer operations. A variation in optical density which is consistent across the set of printed images may be detected, and a second voltage profile correction may be determined based on the variation in optical density. The method may further comprise printing a subsequent image by transferring print agent between the print agent source roller and the electrophotographic surface in a subsequent transfer operation, wherein the roller is controlled to have the second voltage profile during the subsequent transfer operation.Type: GrantFiled: March 28, 2018Date of Patent: September 28, 2021Assignee: Hewlett-Packard Development Company, L.P.Inventors: Moshe Haim, Tsafrir Yedid Am, Rivay Mor, Iliya Shahamov
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Patent number: 10902642Abstract: In an example, two images of a printed calibration image are acquired using two measurement devices. The measurement devices are offset along an axis so that the two images correspond to two portions of the printed calibration image overlapping along the axis. The printed calibration image comprises a pattern extending across the printed calibration image in the direction of the axis, the pattern defining a shape so that in each image, a portion of the pattern appears as different from a straight line parallel to the axis. The two images are aligned using the two portions of pattern.Type: GrantFiled: October 28, 2016Date of Patent: January 26, 2021Assignee: HP Indigo B.V.Inventors: Tsafrir Yedid Am, Eli Kaminsky, Moshe Haim
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Publication number: 20210003956Abstract: In an example, a method includes printing a set of images by transferring print agent between a roller of a print agent source and an electrophotographic surface in a plurality of transfer operations, wherein the roller is controlled to have a first voltage profile during each of the transfer operations. A variation in optical density which is consistent across the set of printed images may be detected, and a second voltage profile correction may be determined based on the variation in optical density. The method may further comprise printing a subsequent image by transferring print agent between the print agent source roller and the electrophotographic surface in a subsequent transfer operation, wherein the roller is controlled to have the second voltage profile during the subsequent transfer operation.Type: ApplicationFiled: March 28, 2018Publication date: January 7, 2021Applicant: Hewlett-Packard Development Company, L.P.Inventors: Moshe Haim, Tsafrir Yedid Am, Rivay Mor, IIiya Shahamov
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Publication number: 20190391519Abstract: In an example, a method of operating a liquid electrophotographic printer is described. The method involves applying limits to a printer control signal. In particular, the printer control signal is digitally processed to reduce signal values to within the obtained limits, wherein neighboring values are modified to maintain the total energy of the printer control signal. The liquid electrophotographic printer is controlled using the processed printer control signal.Type: ApplicationFiled: February 10, 2017Publication date: December 26, 2019Applicant: HP Indigo B.V.Inventors: Tsafrir Yedid Am, Moshe Haim, Rivay Mor
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Publication number: 20190266754Abstract: In an example, two images of a printed calibration image are acquired using two measurement devices. The measurement devices are offset along an axis so that the two images correspond to two portions of the printed calibration image overlapping along the axis. The printed calibration image comprises a pattern extending across the printed calibration image in the direction of the axis, the pattern defining a shape so that in each image, a portion of the pattern appears as different from a straight line parallel to the axis. The two images are aligned using the two portions of pattern.Type: ApplicationFiled: October 28, 2016Publication date: August 29, 2019Applicant: HP Indigo B.V.Inventors: Tsafrir Yedid Am, Eli Kaminsky, Moshe Haim
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Publication number: 20190131912Abstract: Methods and control apparatus for operating a three-phase electric motor are described, in which the motor windings are switched between Star and Delta connections depending on torque requirements, and in which the motor windings are switched to a braking mode when braking torque is required. The electromagnetic torque of the motor is monitored, and a command to switch from Star to Delta is given when the electromagnetic torque rises to reach or exceed a threshold. A command to switch from Delta to Star is given when the electromagnetic torque falls to reach a second threshold. The invention discloses a method of determining instantaneous values for the electromagnetic torque of the motor based on measurements of phase current and phase voltage at particular instants in the voltage cycle.Type: ApplicationFiled: March 31, 2017Publication date: May 2, 2019Applicant: Power Drive Efficiency LtdInventors: Igor Alexander TUREVSKY, Moshe Haim NAIMAN, Arthur NAIMAN