Patents by Inventor Kai Fei
Kai Fei 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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Publication number: 20240160367Abstract: Systems and methods are disclosed including a memory device and a processing device operatively coupled to the memory device. The processing device can perform operations comprising receiving, from a host system, a memory access command; responsive to determining that the memory access command is a program command, incrementing a consecutive counter value; determining whether the consecutive counter value satisfies a threshold criterion; responsive to determining that the consecutive counter value satisfies a threshold criterion, and setting an initial polling timer to a value associated the consecutive counter value satisfying the threshold criterion.Type: ApplicationFiled: October 23, 2023Publication date: May 16, 2024Inventors: Kai Wen Wu, Yue Wei, Peng Fei, Donghua Zhou, Shao Chun Shi
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Publication number: 20220140562Abstract: A optical path structure and a cross line laser comprising the same are provided. The optical path structure comprises a laser emitter (1) for emitting laser light, and the following devices arranged sequentially along the direction of the optical path of the laser light: an aspherical mirror (2), a first beamsplitter (31) and a second beamsplitter (32), a wedge-shaped mirror (4), and a cylindrical mirror (5). The advantages of the present invention are that: 1) the angle of the incident surface (41) of the wedge-shaped mirror (4) is reasonably set such that the light ray reflected by the incident surface (41) of the wedge-shaped mirror (4) cannot emit onto the beamsplitters (31, 32), or even if it emits onto the beamsplitters (31, 32), there is no interference with the reflected light rays (61, 63) by the beamsplitters (31, 32), avoiding the multiple-point phenomenon; 2) the structure of the wedge-shaped mirror (4) is reasonably set such that the breakpoints in the projected laser light line are eliminated.Type: ApplicationFiled: March 31, 2020Publication date: May 5, 2022Inventors: Ou Zhang, Kai Fei
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Patent number: 10970263Abstract: The computer system and method described herein attempt to address the deficiencies by analyzing all relevant data points for each test and control location collectively determine outliers and then exclude the individual outlier data points from the data when analyzing an initiative during a relevant test period. Rather than exclude outliers at the site level, the particular time increment having the outlier data can be extracted and the site can remain in the analysis.Type: GrantFiled: October 29, 2018Date of Patent: April 6, 2021Assignee: Applied Predictive Technologies, Inc.Inventors: Jeffrey Campbell, Kai Fei, Stephen Kent, Ameya Pathare
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Patent number: 10712154Abstract: A laser level comprising a first laser module and a second laser module, each comprising a laser diode and an optical unit, a holder arranging the first laser module and the second laser module in a fixed relative position, and a housing, in which the holder is suspended with a gimbal or ball joint. Each optical unit comprises a collimating lens arranged along the beam path following the laser diode, and configured for collimating a beam emitted by the laser diode; a pair of partially transmitting mirrors, each arranged along the beam path following the collimating lens, and configured for laterally reflecting less than half of the collimated beam in terms of the beam cross-section, and in terms of the beam intensity; and a cylindrical lens arranged along the beam path following the pair of partially transmitting mirrors, and configured for shaping the collimated beam into a fan beam.Type: GrantFiled: July 6, 2018Date of Patent: July 14, 2020Assignee: LEICA GEOSYSTEMS AGInventors: Kai Fei, Guanghua Ma, Thomas Bösch
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Publication number: 20190011258Abstract: A laser level comprising a first laser module and a second laser module, each comprising a laser diode and an optical unit, a holder arranging the first laser module and the second laser module in a fixed relative position, and a housing, in which the holder is suspended with a gimbal or ball joint. Each optical unit comprises a collimating lens arranged along the beam path following the laser diode, and configured for collimating a beam emitted by the laser diode; a pair of partially transmitting mirrors, each arranged along the beam path following the collimating lens, and configured for laterally reflecting less than half of the collimated beam in terms of the beam cross-section, and in terms of the beam intensity; and a cylindrical lens arranged along the beam path following the pair of partially transmitting mirrors, and configured for shaping the collimated beam into a fan beam.Type: ApplicationFiled: July 6, 2018Publication date: January 10, 2019Applicant: LEICA GEOSYSTEMS AGInventors: Kai FEI, Guanghua MA, Thomas BÖSCH
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Patent number: 10127255Abstract: The computer system and method described herein attempt to address the deficiencies by analyzing all relevant data points for each test and control location collectively determine outliers and then exclude the individual outlier data points from the data when analyzing an initiative during a relevant test period. Rather than exclude outliers at the site level, the particular time increment having the outlier data can be extracted and the site can remain in the analysis.Type: GrantFiled: October 7, 2015Date of Patent: November 13, 2018Assignee: Applied Predictive Technologies, Inc.Inventors: Jeffrey Campbell, Kai Fei, Stephen Kent, Ameya Pathare
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Patent number: 9791271Abstract: A window for a laser line projector has a front window, a left window, and a right window positioned on the same plane. A projection of the front window, left window and right window has a shape of an isosceles trapezoid. The projection of the front window is an upper base of the isosceles trapezoid. The projections of the left window and right window are opposite legs of the isosceles trapezoid.Type: GrantFiled: June 5, 2015Date of Patent: October 17, 2017Assignee: Changzhou Huada Kejie Opto-Electro Instruction Co. LtdInventors: Ou Zhang, Kai Fei
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Patent number: 9785162Abstract: An LDO with high efficiency receives an input voltage from an input power line and outputs an output voltage at an output power line. The LDO includes a first active device, a second active device, an operational amplifier and a protection circuit. The first and second active devices are connected in series between the input and output power lines via a connecting node. The operational amplifier controls the second active device according to the output voltage and a core power voltage of a core power line to cause the output voltage to stabilize at a target voltage value. The protection circuit is connected to the input and output power lines, the connecting node and a control node of the first active device, and controls a voltage of the connecting node and the control node of the first active device according to the input and output voltages.Type: GrantFiled: March 23, 2016Date of Patent: October 10, 2017Assignee: MStar Semiconductor, Inc.Inventors: Chun-Chia Chen, Chao-An Chen, Jian-Feng Shiu, Kai-Fei Chang
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Publication number: 20160282888Abstract: An LDO with high efficiency receives an input voltage from an input power line and outputs an output voltage at an output power line. The LDO includes a first active device, a second active device, an operational amplifier and a protection circuit. The first and second active devices are connected in series between the input and output power lines via a connecting node. The operational amplifier controls the second active device according to the output voltage and a core power voltage of a core power line to cause the output voltage to stabilize at a target voltage value. The protection circuit is connected to the input and output power lines, the connecting node and a control node of the first active device, and controls a voltage of the connecting node and the control node of the first active device according to the input and output voltages.Type: ApplicationFiled: March 23, 2016Publication date: September 29, 2016Inventors: Chun-Chia CHEN, Chao-An CHEN, Jian-Feng SHIU, Kai-Fei CHANG
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Patent number: 9350403Abstract: A receiver includes a control module, a data receiving circuit and a masking circuit. The control circuit generates an enable signal according to a pair of differential signals provided by a transmitter. Triggered by the enable signal, the data receiving circuits generates an output signal according to the differential signals, and the masking circuit starts masking the output signal. After generating the enable signal, the control module starts providing a bias voltage to the differential signals such that the output signal has a first state. The transmitter adjusts the differential signals to render the output signal to enter a second state from the first state. Upon detecting the output signal having entered the second state, the control module stops providing the bias voltage and generates a disable signal to prompt the masking circuit to stop masking the output signal.Type: GrantFiled: October 2, 2013Date of Patent: May 24, 2016Assignee: MStar Semiconductor, Inc.Inventors: Ju-Yu Yu, Kai-Fei Chang
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Patent number: 9316498Abstract: A cross line laser (100) comprises a shell and a hanging system (101). The hanging system has two laser modules (110) arranged oppositely on a same plane. Each laser module comprises a laser device (121), a collimation device (130), and a cylindrical lens (140). The cylindrical lens has a high refraction index. Lasers emitted by the laser device passes through the collimation device and are incident on the cylindrical lens, and are split by the cylindrical lens to form laser rays with a diffusion angle approximately larger than 180 degrees. Horizontal laser rays generated by the two laser modules intersect with each other, so as to form laser rays with a diffusion angle of 360 degrees.Type: GrantFiled: December 10, 2012Date of Patent: April 19, 2016Assignee: Changzhou Huada Kejie Opto-Electro Instrument Co., LTD.Inventors: Ou Zhang, Kai Fei
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Patent number: 9191182Abstract: A signal transmission method suitable for a signal transmitter includes: providing a plurality of clock signals with different phases, selecting some of the clock signals as a plurality of intermediate signals; transmitting the intermediate signals to a signal output circuit via a clock distribution network; selecting one of the intermediate signals as a reference clock of the signal output circuit to output data.Type: GrantFiled: January 7, 2015Date of Patent: November 17, 2015Assignee: MStar Semiconductor, Inc.Inventors: Hsian-Feng Liu, Chun-Chia Chen, Kai-Fei Chang, Chao-An Chen
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Publication number: 20150268044Abstract: A window for a laser line projector has a front window, a left window, and a right window positioned on the same plane. A projection of the front window, left window and right window has a shape of an isosceles trapezoid. The projection of the front window is an upper base of the isosceles trapezoid. The projections of the left window and right window are opposite legs of the isosceles trapezoid.Type: ApplicationFiled: June 5, 2015Publication date: September 24, 2015Applicant: Changzhou Huada Kejie Opto-Electro Instruction Co. LtdInventors: Ou Zhang, Kai Fei
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Publication number: 20150195080Abstract: A signal transmission method suitable for a signal transmitter includes: providing a plurality of clock signals with different phases, selecting some of the clock signals as a plurality of intermediate signals; transmitting the intermediate signals to a signal output circuit via a clock distribution network; selecting one of the intermediate signals as a reference clock of the signal output circuit to output data.Type: ApplicationFiled: January 7, 2015Publication date: July 9, 2015Inventors: Hsian-Feng Liu, Chun-Chia Chen, Kai-Fei Chang, Chao-An Chen
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Publication number: 20150052763Abstract: A cross line laser (100) comprises a shell and a hanging system (101). The hanging system has two laser modules (110) arranged oppositely on a same plane. Each laser module comprises a laser device (121), a collimation device (130), and a cylindrical lens (140). The cylindrical lens has a high refraction index. Lasers emitted by the laser device passes through the collimation device and are incident on the cylindrical lens, and are split by the cylindrical lens to form laser rays with a diffusion angle approximately larger than 180 degrees. Horizontal laser rays generated by the two laser modules intersect with each other, so as to form laser rays with a diffusion angle of 360 degrees.Type: ApplicationFiled: December 10, 2012Publication date: February 26, 2015Inventors: Ou Zhang, Kai Fei
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Publication number: 20140094128Abstract: A receiver includes a control module, a data receiving circuit and a masking circuit. The control circuit generates an enable signal according to a pair of differential signals provided by a transmitter. Triggered by the enable signal, the data receiving circuits generates an output signal according to the differential signals, and the masking circuit starts masking the output signal. After generating the enable signal, the control module starts providing a bias voltage to the differential signals such that the output signal has a first state. The transmitter adjusts the differential signals to render the output signal to enter a second state from the first state. Upon detecting the output signal having entered the second state, the control module stops providing the bias voltage and generates a disable signal to prompt the masking circuit to stop masking the output signal.Type: ApplicationFiled: October 2, 2013Publication date: April 3, 2014Applicant: MStar Semiconductor, Inc.Inventors: Ju-Yu Yu, Kai-Fei Chang