Patents by Inventor Yongjun Zheng
Yongjun Zheng 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: 11716520Abstract: The disclosed computer-implemented method includes determining, for multiple different media items, a current time scale at which the media items are encoded for distribution, where at least two of the media items are encoded at different frame rates. The method then includes identifying, for the media items, a unified time scale that provides a constant frame interval for each of the media items. The method also includes changing at least one of the media items from the current time scale to the identified unified time scale to provide a constant frame interval for the changed media item(s). Various other methods, systems, and computer-readable media are also disclosed.Type: GrantFiled: June 25, 2021Date of Patent: August 1, 2023Assignee: Netflix, Inc.Inventors: Weiguo Zheng, Rex Yik Chun Ching, Yongjun Jeon, Chandrika Kasi
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Publication number: 20230199278Abstract: The disclosed computer-implemented method includes determining, for multiple different media items, a current time scale at which the media items are encoded for distribution, where at least two of the media items are encoded at different frame rates. The method then includes identifying, for the media items, a unified time scale that provides a constant frame interval for each of the media items. The method also includes changing at least one of the media items from the current time scale to the identified unified time scale to provide a constant frame interval for the changed media item(s). Various other methods, systems, and computer-readable media are also disclosed.Type: ApplicationFiled: February 15, 2023Publication date: June 22, 2023Inventors: Weiguo Zheng, Rex Yik Chun Ching, Yongjun Jeon, Chandrika Kasi
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Patent number: 11668748Abstract: A test apparatus for testing electrical parameters of a target chip includes: a function generator; a switch matrix module; a plurality of source measurement units (SMUs); at least one of the SMUs is configured to provide power supply for the target chip; at least one of the SMUs is coupled to the switch matrix module; and at least two of said SMUs are test SMUs coupled to ports of the target chip and the function generator.Type: GrantFiled: January 25, 2022Date of Patent: June 6, 2023Assignee: SEMITRONIX CORPORATIONInventors: Fan Lan, Weiwei Pan, Shenzhi Yang, Yongjun Zheng
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Patent number: 11659778Abstract: Methods, systems, and devices for composite electrode material chemistry are described. A memory device may include an access line, a storage element comprising chalcogenide, and an electrode coupled with the memory element and the access line. The electrode may be made of a composition of a first material doped with a second material. The second material may include a tantalum-carbon compound. In some cases, the second may be operable to be chemically inert with the storage element. The second material may include a thermally stable electrical resistivity and a lower resistance to signals communicated between the access line and the storage element across a range of operating temperatures of the storage element as compared with a resistance of the first material.Type: GrantFiled: February 11, 2020Date of Patent: May 23, 2023Assignee: Micron Technology, Inc.Inventors: Pengyuan Zheng, Enrico Varesi, Lorenzo Fratin, Dale Collins, Yongjun J. Hu
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Publication number: 20220146573Abstract: A test apparatus for testing electrical parameters of a target chip includes: a function generator; a switch matrix module; a plurality of source measurement units (SMUs); at least one of the SMUs is configured to provide power supply for the target chip; at least one of the SMUs is coupled to the switch matrix module; and at least two of said SMUs are test SMUs coupled to ports of the target chip and the function generator.Type: ApplicationFiled: January 25, 2022Publication date: May 12, 2022Applicant: SEMITRONIX CORPORATIONInventors: Fan LAN, Weiwei PAN, Shenzhi YANG, YONGJUN ZHENG
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Patent number: 10254339Abstract: To improve test efficiency of addressable test chips, an addressable test chip test system includes a test equipment, a probe card and an addressable test chip, the test equipment connects to the addressable test chip through the probe card to constitute a test path, the test system includes a new type of address register, which can provide two test modes for users according to user's needs. A new type of high density addressable test chip can accommodate DUTs of more than 1000/mm2.Type: GrantFiled: December 29, 2017Date of Patent: April 9, 2019Assignee: Semitronix CorporationInventors: Fan Lan, Shenzhi Yang, Yongjun Zheng, Weiwei Pan
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Patent number: 10156605Abstract: An addressable ring oscillator test chip includes: a plurality of ring oscillator test units, and a peripheral structure including peripheral circuits and PADs. The peripheral circuits share a first power source and a first grounding. Each test unit is associated with an independent power source to thereby decrease voltage drop resulting from wiring and to reduce the influence from other test units. A method of generating a variety of ring oscillators includes: generating a cell template corresponding to a basic unit, including defining a parameterized cell template; generating a ring oscillator based on the cell template, including generating ring oscillators of different stages by selecting different parameters of the cell template; realizing internal connections of the ring oscillator; and generating an instantiated ring oscillator by replacing cell templates with corresponding basic units.Type: GrantFiled: August 20, 2015Date of Patent: December 18, 2018Assignee: Semitronix CorporationInventors: Weiwei Pan, Yongli Liu, Xu Ouyang, Yongjun Zheng, Zheng Shi, Lili Li
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Publication number: 20180188324Abstract: To improve test efficiency of addressable test chips, an addressable test chip test system includes a test equipment, a probe card and an addressable test chip, the test equipment connects to the addressable test chip through the probe card to constitute a test path, the test system includes a new type of address register, which can provide two test modes for users according to user's needs. A new type of high density addressable test chip can accommodate DUTs of more than 1000/mm2.Type: ApplicationFiled: December 29, 2017Publication date: July 5, 2018Applicant: Semitronix CorporationInventors: Fan LAN, Shenzhi YANG, YONGJUN ZHENG, WEIWEI PAN
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Patent number: 9817058Abstract: An addressable test circuit is configured to test parameters of a plurality of transistors. The addressable test circuit includes combination logic circuits including a plurality of gate circuits and are configured to select a device under test, a plurality of PADs, a plurality of address bus and data bus; wherein six or more of the data buses are test signal lines. A test method can employ the above address test circuit for testing parameters of a plurality of transistors, where the subthreshold leakage current Ioff and saturation current Idsat are measured in different signal lines respectively to ensure the accurate measurement of the two parameters in one circuit.Type: GrantFiled: November 14, 2016Date of Patent: November 14, 2017Assignee: Semitronix CorporationInventors: Weiwei Pan, Yongjun Zheng
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Patent number: 9646900Abstract: A programmable test chip includes a target chip to be tested and addressing circuits fabricated on the same wafer. The addressing circuits can be placed in the scribe lines or a pre-allocated area of the wafer. When testing the target chip, a circuit connecting the target chip and the addressing circuits can be fabricated on demand. In some cases the target chip is not connected to the addressing circuits, and a DUT array exists in a scribe line having a connecting circuit prefabricated between the addressing circuits with the DUT array for testing the DUT array in the scribe line. When the need for testing the target chip arises, the prefabricated connecting circuit can be cut, and the connecting circuit connecting the target chip and the addressing circuits can be fabricated. Based on results from such test chips, the manufacturing process can be better studied.Type: GrantFiled: January 24, 2015Date of Patent: May 9, 2017Assignee: Semitronix CorporationInventors: Xu Ouyang, Yongjun Zheng, Zheng Shi, Peiyong Zhang
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Publication number: 20170059645Abstract: An addressable test circuit is configured to test parameters of a plurality of transistors. The addressable test circuit includes combination logic circuits including a plurality of gate circuits and are configured to select a device under test, a plurality of PADs, a plurality of address bus and data bus; wherein six or more of the data buses are test signal lines. A test method can employ the above address test circuit for testing parameters of a plurality of transistors, where the subthreshold leakage current Ioff and saturation current Idsat are measured in different signal lines respectively to ensure the accurate measurement of the two parameters in one circuit.Type: ApplicationFiled: November 14, 2016Publication date: March 2, 2017Applicant: Semitronix CorporationInventors: WEIWEI PAN, YONGJUN ZHENG
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Patent number: 9407041Abstract: An anti-disengaging mechanism of a cable connector includes a power connector having a jack opening. The power connector also has a metal electrode and a ring buckle located within the jack opening. A plug has a plug pin. When the plug pin is inserted into the jack opening, the ring buckle surrounds the plug pin. A longitudinal sliding pushrod is set in the power connector so that when the longitudinal sliding pushrod is in a first position, the longitudinal sliding pushrod tilts the ring buckle so as to lock the plug pin in the jack opening. When the longitudinal sliding pushrod is in a second position, the ring buckle releases the plug pin.Type: GrantFiled: April 3, 2014Date of Patent: August 2, 2016Assignee: Fu Zhou Liu Fang Mechanical and Electrical Co., Ltd.Inventors: Jiang Lirong, Liang Chen, Yongjun Zheng, Jie Mo
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Publication number: 20160061895Abstract: An addressable ring oscillator test chip includes: a plurality of ring oscillator test units, and a peripheral structure including peripheral circuits and PADs. The peripheral circuits share a first power source and a first grounding. Each test unit is associated with an independent power source to thereby decrease voltage drop resulting from wiring and to reduce the influence from other test units. A method of generating a variety of ring oscillators includes: generating a cell template corresponding to a basic unit, including defining a parameterized cell template; generating a ring oscillator based on the cell template, including generating ring oscillators of different stages by selecting different parameters of the cell template; realizing internal connections of the ring oscillator; and generating an instantiated ring oscillator by replacing cell templates with corresponding basic units.Type: ApplicationFiled: August 20, 2015Publication date: March 3, 2016Inventors: Weiwei Pan, Yongli Liu, Xu Ouyang, Yongjun Zheng, Zheng Shi, Lili Li
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Publication number: 20150311634Abstract: An anti-disengaging mechanism of a cable connector includes a power connector having a jack opening. The power connector also has a metal electrode and a ring buckle located within the jack opening. A plug has a plug pin. When the plug pin is inserted into the jack opening, the ring buckle surrounds the plug pin. A longitudinal sliding pushrod is set in the power connector so that when the longitudinal sliding pushrod is in a first position, the longitudinal sliding pushrod tilts the ring buckle so as to lock the plug pin in the jack opening. When the longitudinal sliding pushrod is in a second position, the ring buckle releases the plug pin.Type: ApplicationFiled: April 3, 2014Publication date: October 29, 2015Inventors: Jiang Lirong, Liang Chen, Yongjun Zheng, Jie Mo
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Patent number: 9146270Abstract: The present invention relates to the chip testing field. A method for testing a plurality of transistors in a target chip is provided, characterized by automatically selecting a plurality of pre-defined transistors on the target chip and adding a connection layer to the key layers of each transistor such that the transistor to be tested is connected with and measured by an outside tester. Through automatic generation of the test structures and automatic wiring, the present invention greatly shortens the design cycle of test chips for target transistor testing, and greatly reduces the error probability in the process of designing test chips for target transistor testing, and improves the testing relevancy.Type: GrantFiled: February 11, 2014Date of Patent: September 29, 2015Assignee: SEMITRONIX CORPORATIONInventors: Kangpeng Shao, Yongjun Zheng, Xu Ouyang
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Publication number: 20150212144Abstract: A programmable test chip includes a target chip to be tested and addressing circuits fabricated on the same wafer. The addressing circuits can be placed in the scribe lines or a pre-allocated area of the wafer. When testing the target chip, a circuit connecting the target chip and the addressing circuits can be fabricated on demand. In some cases the target chip is not connected to the addressing circuits, and a DUT array exists in a scribe line having a connecting circuit prefabricated between the addressing circuits with the DUT array for testing the DUT array in the scribe line. When the need for testing the target chip arises, the prefabricated connecting circuit can be cut, and the connecting circuit connecting the target chip and the addressing circuits can be fabricated. Based on results from such test chips, the manufacturing process can be better studied.Type: ApplicationFiled: January 24, 2015Publication date: July 30, 2015Inventors: XU OUYANG, YONGJUN ZHENG, ZHENG SHI, PEIYONG ZHANG
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Publication number: 20150042372Abstract: Methods of testing key parameters of transistors can be achieved using an addressable test circuit. Saturation current and leakage current of transistor are measured through different test signal lines. The addressable test circuit can be applied to a plurality of MOS transistors, each MOS transistor has a gate end G, a drain end D, a source end S, and a substrate B, wherein the S end and D end of each MOS transistor are respectively connected to different test signal lines. The test circuit can have a high area utilization rate such that it has the capacity to put a lot of transistors within one small wafer area. In addition, each transistor's Idsat, Ioff can be measured accurately.Type: ApplicationFiled: October 26, 2014Publication date: February 12, 2015Applicant: SEMITRONIX CORPORATIONInventors: WEIWEI PAN, YONGJUN ZHENG
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Publication number: 20150002184Abstract: The present invention relates to the chip testing field. A method for testing a plurality of transistors in a target chip is provided, characterized by automatically selecting a plurality of pre-defined transistors on the target chip and adding a connection layer to the key layers of each transistor such that the transistor to be tested is connected with and measured by an outside tester. Through automatic generation of the test structures and automatic wiring, the present invention greatly shortens the design cycle of test chips for target transistor testing, and greatly reduces the error probability in the process of designing test chips for target transistor testing, and improves the testing relevancy.Type: ApplicationFiled: February 11, 2014Publication date: January 1, 2015Applicant: Semitronix CorporationInventors: Kangpeng Shao, Yongjun Zheng, Xu Ouyang
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Publication number: 20140115547Abstract: The present invention relates to a method of method of generating parameterized integrated circuit units in a plurality of platforms. The said method comprising: (1) designing parameterized units in a graphic user interface and defining their constrain relations; (2) transforming the parameterized units to scripts. The invention providing a method of designing parameterized units in a graphical user interface without editing parameterized unit scripts, reducing the complexity of the design process and the design cycle; in addition, it is very easy for users to design and maintenance; at the same time, increasing the portability.Type: ApplicationFiled: May 18, 2013Publication date: April 24, 2014Applicant: Semitronix CorporationInventor: YONGJUN ZHENG
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Patent number: 8166445Abstract: An embodiment of the present invention reduces resources needed to estimate the Icc Current Temperature Scaling Factor (ITSF) of a device, and provides a method and apparatus to estimate ITSF from the device speed and performance characteristics which can be measured at room temperature. In one embodiment, a method for estimating the ITSF of an integrated circuit includes: determining a level of propagation delay of a portion of the integrated circuit; and determining an estimated Icc current temperature scaling factor from a correlation between the level of the propagation delay and a modeled Icc current temperature scaling factor.Type: GrantFiled: September 11, 2009Date of Patent: April 24, 2012Assignee: Xilinx, Inc.Inventors: Cinti X. Chen, Yongjun Zheng, Joe W. Zhao