Patents by Inventor Chen-Feng CHIANG
Chen-Feng CHIANG 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: 20250069648Abstract: Disclosed herein are related to a memory device. In one aspect, the memory device includes a memory array including a set of memory cells. In one aspect, each of the set of memory cells includes a corresponding transistor and a corresponding capacitor connected in series between a bit line and a select line. In one aspect, the memory device includes a first transistor including a source/drain electrode coupled to a controller and another source/drain electrode coupled to the bit line. In one aspect, the memory device includes a second transistor including a gate electrode coupled to the bit line. In one aspect, the second transistor is configured to conduct current corresponding to data stored by a memory cell of the set of memory cells.Type: ApplicationFiled: November 14, 2024Publication date: February 27, 2025Applicant: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chen-Jun Wu, Yun-Feng Kao, Sheng-Chih Lai, Katherine H. Chiang, Chung-Te Lin
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Publication number: 20220138570Abstract: A system performs the operations of a neural network agent and a circuit simulator for analog circuit sizing. The system receives an input indicating a specification of an analog circuit and design parameters. The system iteratively searches a design space until a circuit size is found to satisfy the specification and the design parameters. In each iteration, the neural network agent calculates measurement estimates for random sample generated in a trust region, which is a portion of the design space. Based on the measurement estimate, the system identifies a candidate size that optimizes a value metric. The circuit simulator receives the candidate size and generates a simulation measurement. The system calculates updates to weights of the neural network agent and the trust region for a next iteration based on, at least in part, the simulation measurement.Type: ApplicationFiled: October 6, 2021Publication date: May 5, 2022Inventors: Chia-Yu Tsai, Hung-Hao Shen, Chen-Feng Chiang, Chung-An Wang, Yiju Ting, Chia-Shun Yeh, Chin-Tang Lai, Feng-Ming Tsai, Kai-En Yang
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Patent number: 10027321Abstract: An I/O driving circuit comprising a post driver. The post driver comprises: a first switch device, comprising a first terminal coupled to an I/O voltage, and comprising a second terminal, wherein the first switch device provides an initial driving voltage at the second terminal of the first switch device; and a first voltage providing device, comprising a first terminal coupled to the second terminal of the first switch device, and comprising a second terminal. The first voltage providing device is configured to provide a driving voltage at the second terminal of the first voltage providing device via providing a voltage drop to the initial driving voltage.Type: GrantFiled: June 23, 2015Date of Patent: July 17, 2018Assignee: MEDIATEK INC.Inventors: Chen-Feng Chiang, An-Siou Li
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Publication number: 20170315577Abstract: A control circuit comprising a driving circuit, which comprises a voltage adjusting circuit for generating a control voltage, and comprises a first transistor and a second transistor. The first transistor comprises: a first terminal; a second terminal; and a control terminal, for receiving a bias voltage generated from at least operating voltage of the control circuit. The second transistor comprises: a first terminal, coupled to a second terminal of the first transistor; a second terminal, for receiving a first predetermined voltage; and a control terminal, for receiving the control voltage. The control circuit further comprises: a candidate voltage selecting circuit, for outputting one of a plurality of candidate voltages; and a voltage selecting circuit, for outputting one of the candidate voltage output from the candidate voltage selecting circuit and a ground voltage as the bias voltage.Type: ApplicationFiled: July 19, 2017Publication date: November 2, 2017Inventors: Che-Yuan Jao, Chen-Feng Chiang
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Patent number: 9798345Abstract: A control circuit comprising a driving circuit, which comprises a voltage adjusting circuit for generating a control voltage, and comprises a first transistor and a second transistor. The first transistor comprises: a first terminal; a second terminal; and a control terminal, for receiving a bias voltage generated from at least operating voltage of the control circuit. The second transistor comprises: a first terminal, coupled to a second terminal of the first transistor; a second terminal, for receiving a first predetermined voltage; and a control terminal, for receiving the control voltage. The control circuit further comprises: a candidate voltage selecting circuit, for outputting one of a plurality of candidate voltages; and a voltage selecting circuit, for outputting one of the candidate voltage output from the candidate voltage selecting circuit and a ground voltage as the bias voltage.Type: GrantFiled: July 19, 2017Date of Patent: October 24, 2017Assignee: MEDIATEK INC.Inventors: Che-Yuan Jao, Chen-Feng Chiang
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Patent number: 9746866Abstract: One embodiment of the present application discloses a control circuit comprising a driving circuit which comprises a voltage adjusting circuit, a first transistor and a second transistor. The first transistor comprises: a first terminal; a second terminal; and a control terminal, for receiving a bias voltage generated from at least operating voltage of the control circuit. The second transistor comprises: a first terminal, coupled to a second terminal of the first transistor; a second terminal, for receiving a first predetermined voltage; and a control terminal, for receiving the control voltage. A control system comprising the control circuit is also disclosed.Type: GrantFiled: January 19, 2015Date of Patent: August 29, 2017Assignee: MEDIATEK INC.Inventors: Che-Yuan Jao, Chen-Feng Chiang
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Patent number: 9557764Abstract: A clock tree circuit Including a first clock source, generating a first signal, and a first tree circuit. The first clock tree circuit includes a first driving stage for receiving the first signal, a second driving stage, connected to the first driving stage, a third driving stage, connected to the second driving stage, and a metal connection element, coupled between different nodes of the third driving stage and configured as a short-circuited element.Type: GrantFiled: December 28, 2015Date of Patent: January 31, 2017Assignee: MEDIATEK INC.Inventors: Chen-Feng Chiang, Kai-Hsin Chen, Ming-Shi Liou, Chih-Tsung Yao
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Publication number: 20160173085Abstract: An I/O driving circuit comprising a post driver. The post driver comprises: a first switch device, comprising a first terminal coupled to an I/O voltage, and comprising a second terminal, wherein the first switch device provides an initial driving voltage at the second terminal of the first switch device; and a first voltage providing device, comprising a first terminal coupled to the second terminal of the first switch device, and comprising a second terminal. The first voltage providing device is configured to provide a driving voltage at the second terminal of the first voltage providing device via providing a voltage drop to the initial driving voltage.Type: ApplicationFiled: June 23, 2015Publication date: June 16, 2016Inventors: Chen-Feng Chiang, An-Siou Li
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Publication number: 20160132071Abstract: A clock tree circuit Including a first clock source, generating a first signal, and a first tree circuit. The first clock tree circuit includes a first driving stage for receiving the first signal, a second driving stage, connected to the first driving stage, a third driving stage, connected to the second driving stage, and a metal connection element, coupled between different nodes of the third driving stage and configured as a short-circuited element.Type: ApplicationFiled: December 28, 2015Publication date: May 12, 2016Inventors: Chen-Feng CHIANG, Kai-Hsin CHEN, Ming-Shi LIOU, Chih-Tsung YAO
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Patent number: 9256245Abstract: A clock tree circuit includes a clock source and a tree circuit. The clock source generates a signal. The tree circuit at least includes five driving units and a metal connection element. A first driving unit has an input terminal for receiving the signal, and an output terminal coupled to a first node. A second driving unit has an input terminal coupled to the first node, and an output terminal coupled to a second node. A third driving unit has an input terminal coupled to the first node, and an output terminal coupled to a third node. A fourth driving unit has an input terminal coupled to the second node. A fifth driving unit has an input terminal coupled to the third node. The metal connection element is coupled between the second node and the third node, and configured as a short-circuited element.Type: GrantFiled: January 22, 2015Date of Patent: February 9, 2016Assignee: MEDIATEK INC.Inventors: Chen-Feng Chiang, Kai-Hsin Chen, Ming-Shi Liou, Chih-Tsung Yao
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Publication number: 20150338870Abstract: One embodiment of the present application discloses a control circuit comprising a driving circuit which comprises a voltage adjusting circuit, a first transistor and a second transistor. The first transistor comprises: a first terminal; a second terminal; and a control terminal, for receiving a bias voltage generated from at least operating voltage of the control circuit. The second transistor comprises: a first terminal, coupled to a second terminal of the first transistor; a second terminal, for receiving a first predetermined voltage; and a control terminal, for receiving the control voltage. A control system comprising the control circuit is also disclosed.Type: ApplicationFiled: January 19, 2015Publication date: November 26, 2015Inventors: Che-Yuan Jao, Chen-Feng Chiang
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Publication number: 20150286243Abstract: A clock tree circuit includes a clock source and a tree circuit. The clock source generates a signal. The tree circuit at least includes five driving units and a metal connection element. A first driving unit has an input terminal for receiving the signal, and an output terminal coupled to a first node. A second driving unit has an input terminal coupled to the first node, and an output terminal coupled to a second node. A third driving unit has an input terminal coupled to the first node, and an output terminal coupled to a third node. A fourth driving unit has an input terminal coupled to the second node. A fifth driving unit has an input terminal coupled to the third node. The metal connection element is coupled between the second node and the third node, and configured as a short-circuited element.Type: ApplicationFiled: January 22, 2015Publication date: October 8, 2015Inventors: Chen-Feng CHIANG, Kai-Hsin CHEN, Ming-Shi LIOU, Chih-Tsung YAO
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Patent number: 8907712Abstract: A level shifter circuit includes a level shifter unit and a first controlling unit. The level shifter unit has an input node for receiving an input signal having a predetermined level, an output node for outputting an output signal having a desired level and a complementary output node for outputting a complementary output signal complementary to the output signal. The first controlling unit is coupled to the level shifter unit and has a first transistor coupled between the complementary output node and a first control node for receiving a first control signal and a second transistor coupled between the input node for receiving the input signal and a ground.Type: GrantFiled: September 12, 2012Date of Patent: December 9, 2014Assignee: Mediatek Inc.Inventor: Chen-Feng Chiang
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Publication number: 20130257505Abstract: A level shifter circuit includes a level shifter unit and a first controlling unit. The level shifter unit has an input node for receiving an input signal having a predetermined level, an output node for outputting an output signal having a desired level and a complementary output node for outputting a complementary output signal complementary to the output signal. The first controlling unit is coupled to the level shifter unit and has a first transistor coupled between the complementary output node and a first control node for receiving a first control signal and a second transistor coupled between the input node for receiving the input signal and a ground.Type: ApplicationFiled: September 12, 2012Publication date: October 3, 2013Applicant: MEDIATEK INC.Inventor: Chen-Feng CHIANG