Patents by Inventor Juhui Li
Juhui Li 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: 10005285Abstract: The application provides an ink cartridge chip applied in an ink cartridge which is detachably installed in an imaging device. The ink cartridge chip includes an interface unit and a control unit. The interface unit receives a light control command from the imaging device, which may be a light-lighting-up or a light-extinguishing command. The control unit is connected to a light-emitting unit, and lights up the light-emitting unit on detecting that the ink cartridge chip is in a power-up initialization stage. And the control unit is also connected to the interface unit, and determines, in a case that the light control command is a light-extinguishing command, whether a preset extinguishing condition is satisfied, extinguishes the light-emitting unit if the preset extinguishing condition is satisfied, and maintains a current state of the light-emitting unit if the light control command is a light-lighting-up command.Type: GrantFiled: January 27, 2017Date of Patent: June 26, 2018Assignee: APEX MICROELECTRONICS CO., LTD.Inventors: Wei Zhou, Juhui Li, Hao Chen, Yanhui Luo
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Patent number: 9992012Abstract: A differential detector for a receiver and a method of detecting the value of symbols of a signal is disclosed. In particular, a detector comprising: an analog to digital converter for sampling samples from symbols of a signal; a differentiator configured to differentiate the samples with a transfer function to produce a differentiated series of samples for each symbol; and a decision device configured to determine the value of each symbol by comparing values of the differentiated series of samples with boundary condition values.Type: GrantFiled: September 15, 2016Date of Patent: June 5, 2018Assignee: NXP B.V.Inventors: Adaickalavan Meiyappan, Juhui Li, Ghiath Al-Kadi, Massimo Ciacci
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Patent number: 9838197Abstract: A system and module for, and a method of correcting, memory misalignment in a phase shift keying receiver is disclosed. Embodiments include a system having: an analog front end for receiving a demodulated signal having a preamble portion, and for generating a digital register input signal including a received preamble portion; a finite state machine for selecting a memory address of the demodulated signal based on the received preamble portion; a preamble memory for storing all possible preambles contained within the demodulated signal and for supplying a selected preamble memory output corresponding to the selected memory address; and a memory alignment module configured to compare phase information of symbols of the preamble portion and preamble phase information of symbols of the selected preamble memory output. This system checks that the preamble portion of the register input signal aligns with the selected preamble memory output and makes corrections when necessary.Type: GrantFiled: April 8, 2016Date of Patent: December 5, 2017Assignee: NXP B.V.Inventors: Juhui Li, Ghiath Al-kadi, Massimo Ciacci
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Patent number: 9825788Abstract: The present disclosure relates in general to devices, systems and methods for wireless communication, and in particular to communication using a proximity integrated circuit card (PICC). Example embodiments include a circuit (100) for a PICC, the circuit comprising an input stage (101), a decoding module (106) and a bias adjustment module (117), the bias adjustment module (117) configured to receive an output code from the decoding module and provide a bias adjustment signal to the input stage (101), the bias adjustment module (117) configured to iteratively tune the bias adjustment signal based on a measurement of the output code, with successive steps tuning the bias adjustment signal by a smaller amount until the output code is within a decoding range.Type: GrantFiled: June 3, 2016Date of Patent: November 21, 2017Assignee: NXP B.V.Inventors: Remco Cornelis Herman Van De Beek, Liang Zhang, LiSong Feng, Juhui Li, Alan Chang
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Publication number: 20170136775Abstract: The application provides an ink cartridge chip applied in an ink cartridge which is detachably installed in an imaging device. The ink cartridge chip includes an interface unit and a control unit. The interface unit receives a light control command from the imaging device, which may be a light-lighting-up or a light-extinguishing command. The control unit is connected to a light-emitting unit, and lights up the light-emitting unit on detecting that the ink cartridge chip is in a power-up initialization stage. And the control unit is also connected to the interface unit, and determines, in a case that the light control command is a light-extinguishing command, whether a preset extinguishing condition is satisfied, extinguishes the light-emitting unit if the preset extinguishing condition is satisfied, and maintains a current state of the light-emitting unit if the light control command is a light-lighting-up command.Type: ApplicationFiled: January 27, 2017Publication date: May 18, 2017Inventors: Wei Zhou, Juhui Li, Hao Chen, Yanhui Luo
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Patent number: 9628062Abstract: A 24-transistor D flip-flop circuit operates in a sampling mode when a clock signal has a first voltage state, and a holding mode when the clock signal has a second voltage state. The flip-flop circuit includes an internal control node coupled to a reference voltage node by way of a transistor controllable to couple the internal control node to the reference voltage node when the clock signal has the second voltage state. The flip-flop has very low power dissipation as it includes a 4-transistor change-sense component to detect changes in input data. The change-sense component is coupled in series with the transistor and receives an indication of an input voltage state of the flip-flop circuit and an indication of an output voltage state of the flip-flop circuit, and inhibits toggling of the internal control node if the indicated input voltage state and the indicated output voltage state are the same.Type: GrantFiled: June 13, 2016Date of Patent: April 18, 2017Assignee: FREESCALE SEMICONDUCTOR, INC.Inventors: Van-Loi Le, Tae-Hyoung Kim, Juhui Li, Alan Yeow Khai Chang
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Publication number: 20170078085Abstract: A differential detector for a receiver and a method of detecting the value of symbols of a signal is disclosed. In particular, a detector comprising: an analog to digital converter (110) for sampling samples (232) from symbols (234) of a signal (230); a differentiator (130) configured to differentiate the samples with a transfer function to produce a differentiated series of samples for each symbol; and a decision device configured to determine the value of each symbol by comparing values of the differentiated series of samples with boundary condition values.Type: ApplicationFiled: September 15, 2016Publication date: March 16, 2017Inventors: Adaickalavan Meiyappan, Juhui Li, Ghiath Al-Kadi, Massimo Ciacci
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Patent number: 9592676Abstract: An ink cartridge chip includes an interface unit, a control unit, and a storage unit, wherein the interface unit is configured to receive a light control command sent from an imaging device, and the light control command includes ink cartridge identification information; the storage unit is configured to store autogenic identification information and a state flag, and the state flag includes an executable state or a non-executable state; the control unit is configured to execute the light control command; and the control unit is is configured to, when the interface unit receives the light control command, control the light-emitting unit to execute the light control command based on the type of the light control command and the state flag in the storage unit to re-determined the state flag.Type: GrantFiled: April 15, 2014Date of Patent: March 14, 2017Assignee: Apex Microelectronics Co., Ltd.Inventors: Wei Zhou, Juhui Li, Hao Chen, Yanhui Luo
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Publication number: 20160359648Abstract: The present disclosure relates in general to devices, systems and methods for wireless communication, and in particular to communication using a proximity integrated circuit card (PICC). Example embodiments include a circuit (100) for a PICC, the circuit comprising an input stage (101), a decoding module (106) and a bias adjustment module (117), the bias adjustment module (117) configured to receive an output code from the decoding module and provide a bias adjustment signal to the input stage (101), the bias adjustment module (117) configured to iteratively tune the bias adjustment signal based on a measurement of the output code, with successive steps tuning the bias adjustment signal by a smaller amount until the output code is within a decoding range.Type: ApplicationFiled: June 3, 2016Publication date: December 8, 2016Inventors: Remco Cornelis Herman Van De Beek, Liang Zhang, LiSong Feng, Juhui Li, Alan Chang
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Publication number: 20160301523Abstract: A system and module for, and a method of correcting, memory misalignment in a phase shift keying receiver is disclosed. Embodiments include a system having: an analog front end for receiving a demodulated signal having a preamble portion, and for generating a digital register input signal including a received preamble portion; a finite state machine for selecting a memory address of the demodulated signal based on the received preamble portion; a preamble memory for storing all possible preambles contained within the demodulated signal and for supplying a selected preamble memory output corresponding to the selected memory address; and a memory alignment module configured to compare phase information of symbols of the preamble portion and preamble phase information of symbols of the selected preamble memory output. This system checks that the preamble portion of the register input signal aligns with the selected preamble memory output and makes corrections when necessary.Type: ApplicationFiled: April 8, 2016Publication date: October 13, 2016Inventors: Juhui Li, Ghiath Al-kadi, Massimo Ciacci
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Publication number: 20160067980Abstract: An ink cartridge chip includes an interface unit, a control unit, and a storage unit, wherein the interface unit is configured to receive a light control command sent from an imaging device, and the light control command includes ink cartridge identification information; the storage unit is configured to store autogenic identification information and a state flag, and the state flag includes an executable state or a non-executable state; the control unit is configured to execute the light control command; and the control unit is is configured to, when the interface unit receives the light control command, control the light-emitting unit to execute the light control command based on the type of the light control command and the state flag in the storage unit to re-determined the state flag.Type: ApplicationFiled: April 15, 2014Publication date: March 10, 2016Inventors: Wei Zhou, Juhui Li, Hao Chen, Yanhui Luo