Mosfet Patents (Class 326/97)
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Patent number: 11790983Abstract: The present invention provides an output driving circuit and a memory device. The output driving circuit is provided with a pull-up pre-amplification unit and a pull-down pre-amplification unit between a signal input terminal and a signal output terminal, the pull-up pre-amplification unit and the pull-down pre-amplification unit adjust the duty cycle ratios of the positive input signal and the negative input signal so that the duty cycle ratios of the output signals at the signal output terminal is the same as that of the input signal at the signal input terminal, which avoids the mismatch of output impedance under different output voltages, thereby eliminating the problem of duty cycle ratio deviation of the output signal that affects the signal quality.Type: GrantFiled: June 10, 2020Date of Patent: October 17, 2023Assignee: CHANGXIN MEMORY TECHNOLOGIES, INC.Inventor: Yan Xu
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Patent number: 11455968Abstract: To suppress malfunctions in a shift register circuit. A shift register having a plurality of flip-flop circuits is provided. The flip-flop circuit includes a transistor 11, a transistor 12, a transistor 13, a transistor 14, and a transistor 15. When the transistor 13 or the transistor 14 is turned on in a non-selection period, the potential of a node A is set, so that the node A is prevented from entering into a floating state.Type: GrantFiled: March 3, 2021Date of Patent: September 27, 2022Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Atsushi Umezaki
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Patent number: 11423858Abstract: To suppress malfunctions in a shift register circuit. A shift register having a plurality of flip-flop circuits is provided. The flip-flop circuit includes a transistor 11, a transistor 12, a transistor 13, a transistor 14, and a transistor 15. When the transistor 13 or the transistor 14 is turned on in a non-selection period, the potential of a node A is set, so that the node A is prevented from entering into a floating state.Type: GrantFiled: March 3, 2021Date of Patent: August 23, 2022Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Atsushi Umezaki
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Patent number: 10673204Abstract: A laser driver is described which comprises a resonant circuit having an inductor and a DC blocking capacitor. A biasing voltage reference is operably coupled to the inductor. A controller is operable for controlling the resonant circuit for selectively connecting the inductor between high and low impedance. The DC blocking capacitor is operable for connecting to a laser diode.Type: GrantFiled: March 7, 2017Date of Patent: June 2, 2020Assignee: SENSL TECHNOLOGIES LTD.Inventors: Nikolay Pavlov, Stephen Bellis, John Carlton Jackson
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Patent number: 10380964Abstract: Disclosed is a shift register unit and a driving method therefor. The shift register unit includes an input circuit that is connected to a first input end and a second input end; a pull-up circuit that is connect to an output end; a first pull-down circuit and a second pull-down circuit; and where the input circuit is configured to receive a first power signal, and a second power signal, and the input circuit is controlled by the first power signal and the second power signal; the first pull-down circuit and the second pull-down circuit are connected to the input circuit and the pull-up circuit, and each first pull-down circuit is configured to receive a control signal; and the pull-up circuit is configured to receive a clock signal.Type: GrantFiled: September 8, 2017Date of Patent: August 13, 2019Assignees: BOE TECHNOLOGY GROUP CO., LTD., CHENGDU BOE OPTOELECTRONICS TECHNOLOGY CO., LTD.Inventors: Bo Wu, Wen Tan, Dongmei Wei, Yin Deng
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Patent number: 10355671Abstract: Aspects for a flip-flop circuit are described herein. As an example, the aspects may include a first passgate, a first latch, a second passgate, and a second latch. The first latch may include a first inverter and a first logic gate. The first logic gate may further include a second inverter and at least one voltage reducing component. The voltage reducing component may be an N-channel transistor or a P-channel transistor. Similarly, the second latch may include a third inverter and a second logic gate. The second logic gate may further include a fourth inverter and at least one voltage reducing component.Type: GrantFiled: June 4, 2018Date of Patent: July 16, 2019Assignee: LITTLE DRAGON IP HOLDING LLCInventor: Mingming Mao
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Patent number: 10177764Abstract: A circuit includes an output node, a set of first transistors, a set of second transistors, and a first and second power node. The first power node is configured to carry a first voltage level, and second power node is configured to carry a second voltage level. Set of first transistors is coupled between the first power node and output node. Set of second transistors is coupled between the second power node and output node. The first control signal generating circuit is coupled to a gate of a first transistor of the set of first transistors and a gate of a first transistor of the set of second transistors. The first control signal generating circuit is configured to generate a set of biasing signals for the gate of the first transistor of the set of first transistors and the gate of the first transistor of the set of second transistors.Type: GrantFiled: January 12, 2017Date of Patent: January 8, 2019Assignee: TAIWAN SEMICONDUCTOR MANUFACTURING COMPANY, LTD.Inventors: Chan-Hong Chern, Tsung-Ching Huang, Chih-Chang Lin, Ming-Chieh Huang, Fu-Lung Hsueh
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Patent number: 9985611Abstract: Described is an apparatus which comprises: a first p-type Tunneling Field-Effect Transistor (TFET); a first n-type TFET coupled in series with the first p-type TFET; a first node coupled to gate terminals of the first p-type and n-type TFETs; a first clock node coupled to a source terminal of the first TFET, the first clock node is to provide a first clock; and a second clock node coupled to a source terminal of the second TFET, the second clock node is to provide a second clock.Type: GrantFiled: October 23, 2015Date of Patent: May 29, 2018Assignee: Intel CorporationInventors: Daniel H. Morris, Uygar E. Avci, Ian A. Young
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Patent number: 9781679Abstract: An electronic system includes: a first device configured to generate an output signal in response to current input data and generate a power saving signal based on the current input data; a second device, and a controller. The output signal is perceivable using a physiological sense. The controller is configured to switch the electronic system into one of an inactive state and an active state, operate the second device during the active state in a power saving mode when the power saving signal is activated, and operate the second device during the active state in a normal power mode when the power saving signal is deactivated.Type: GrantFiled: November 17, 2016Date of Patent: October 3, 2017Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventor: Seung-Soo Yang
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Patent number: 9753480Abstract: An embodiment of an arrangement includes a voltage regulator configured to provide an output voltage, said voltage regulator configured to receive one of a plurality of different regulator reference voltages and a controller configured to provide a selection signal, said selection signal being used to control which of said regulator reference voltages said voltage regulator receives.Type: GrantFiled: August 9, 2013Date of Patent: September 5, 2017Assignee: STMicroelectronics international N.V.Inventor: Rajesh Narwal
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Patent number: 9703704Abstract: To provide a semiconductor device with less power consumption. In a semiconductor device including a CPU, the frequency of access to a cache memory is monitored. In the case where the access frequency is uniform, supply of a power supply voltage to the CPU is stopped. In the case where the access frequency is not uniform, stop of supplying the power supply voltage is performed on memories with a time interval, and eventually, supply of the power supply voltage to the CPU is stopped. Further, write back processing is efficiently performed in accordance with determination of a dirty bit, so that power consumption of the semiconductor device can be further achieved.Type: GrantFiled: April 25, 2013Date of Patent: July 11, 2017Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventor: Yoshiyuki Kurokawa
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Patent number: 9680309Abstract: Apparatus and methods are provided to automatically detect and control a load switch for a wireless power receiver. In one novel aspect, a method is provided to adaptively control the load switch based on the output condition of a rectified output according to a predefined criteria. In one embodiment of the invention, the methods to adaptively control the load switch comprises a first stage that turns on the load switch quickly; a second stage that stops turning on the load switch and holds the load switch at its current value; a third stage that slowly pulls down the load switch; and a fourth stage that quickly turns off the load switch. In another embodiment, an integrated circuit for a wireless power pick up unit is provided to control the load switch adaptively based on a rectified output feedback and a predefined criteria.Type: GrantFiled: November 21, 2013Date of Patent: June 13, 2017Assignee: Active-Semi, Inc.Inventor: James A. Kohout
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Patent number: 9559671Abstract: A master slave storage circuit can include a first master portion coupled to a first master data storage node and a first slave portion coupled to a first slave data storage node. The first master portion can comprise one of a first master latch or a first master capacitive element coupled to the first master data storage node and the first slave portion comprises one of a first slave latch or a first slave capacitive element coupled to the first slave data storage node. If the first master portion comprises the first master latch, the first slave portion comprises the first slave capacitive element, and if the first master portion comprises the first master capacitive element, the first slave portion comprises the first slave latch.Type: GrantFiled: December 17, 2015Date of Patent: January 31, 2017Assignee: NXP USA, Inc.Inventors: Srikanth Jagannathan, Nihaar N. Mahatme, Kumar Abhishek
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Patent number: 9553745Abstract: A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.Type: GrantFiled: April 20, 2012Date of Patent: January 24, 2017Assignee: Rambus Inc.Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian Leibowitz
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Patent number: 9484906Abstract: Apparatus and methods are provided to power an N-type load switch using a bootstrap capacitor. In one embodiment, an integrated circuit for a wireless power receiver comprises a first rectifier input terminal (RX1), a second rectifier input terminal (RX2), a first bootstrap terminal (HSB1), a second bootstrap terminal (HSB2), and a load switch terminal (LSW). A first and a second bootstrap circuit are coupled with HSB1 and HSB2 to power the rectifier in a regular mode. A load switch driver circuit is coupled between LSW and either HSB1 or HSB2. In the regular mode the load switch driver circuit powers a load switch through a corresponding bootstrap circuit. In an output shutdown mode, an output shutdown circuit is turned on to turn off the load switch. In one embodiment, the load switch is external to the integrated circuit. In another embodiment, the load switch is internal to the integrated circuit.Type: GrantFiled: October 9, 2013Date of Patent: November 1, 2016Assignee: Active-Semi, Inc.Inventor: James A. Kohout
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Patent number: 9438212Abstract: A circuit generates low-skew true and complement output signals from an input signal using an inverter, true signal generation circuitry, and complement signal generation circuitry. The inverter operates between a high-voltage reference source (VDD) and a low-voltage reference source (VSS) and inverts the input signal to generate a delayed complement input signal. The true signal generation circuitry, which comprises a p-type transistor in series with an n-type transistor, (i) operates between (a) one of VDD and VSS and (b) one of the true input signal and the complement input signal and (ii) generates a true output signal. The complement signal generation circuitry, which also comprises p-type transistor in series with an n-type transistor, (i) operates between (a) one of VDD and VSS and (b) one of the true input signal and the complement input signal and (ii) generates a complement output signal.Type: GrantFiled: November 30, 2012Date of Patent: September 6, 2016Assignee: Avago Technologies General IP (Singapore) Pte. Ltd.Inventors: Manish Trivedi, Manish Umedlal Patel
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Patent number: 9401187Abstract: An integrated circuit includes a first stage including first logic gates each of which performs a first logic operation on a corresponding signal among first to Nth signals and a first bit of a binary code, and a second stage including second logic gates each of which performs a second logic operation on corresponding output signals of the first logic gates and is reset based on a second bit of the binary code.Type: GrantFiled: November 26, 2014Date of Patent: July 26, 2016Assignee: SK Hynic Inc.Inventor: Hyun-Sung Lee
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Patent number: 9184733Abstract: Systems and methods for operating transistors near or in the sub-threshold region to reduce power consumption are described herein. In one embodiment, a method for low power operation comprises sending a clock signal to a flop via a clock path comprising a plurality of transistors, wherein the clock signal has a high state corresponding to a high voltage that is above threshold voltages of the transistors in the clock path. The method also comprises sending a data signal to the flop via a data path comprising a plurality of transistors, wherein the data signal has a high state corresponding to a low voltage that is below threshold voltages of the transistors in the data path. The method further comprises latching the data signal at the flop using the clock signal.Type: GrantFiled: March 14, 2014Date of Patent: November 10, 2015Assignee: QUALCOMM IncorporatedInventor: Michael Joseph Brunolli
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Patent number: 9158354Abstract: A domino logic circuit includes a pre-charge circuit pre-charging a first dynamic node in response to a clock signal, a first logic network determining a logic level of the first dynamic node in response to first data signals, an inverter receiving the clock signal, a discharge circuit discharging a second dynamic node in response to an output signal of the inverter, and a second logic network determining a logic level of the second dynamic node in response to at least one second data signal and an output signal of the first dynamic node.Type: GrantFiled: March 12, 2013Date of Patent: October 13, 2015Assignee: Samsung Electronics Co., Ltd.Inventors: Ken Keon Shin, Hoi Jin Lee, Gun Ok Jung, Min Su Kim
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Patent number: 9148322Abstract: A signaling system includes a pre-emphasizing transmitter and an equalizing receiver coupled to one another via a high-speed signal path. The receiver measures the quality of data conveyed from the transmitter. A controller uses this information and other information to adaptively establish appropriate transmit pre-emphasis and receive equalization settings, e.g. to select the lowest power setting for which the signaling system provides some minimum communication bandwidth without exceeding a desired bit-error rate.Type: GrantFiled: October 28, 2011Date of Patent: September 29, 2015Assignee: Rambus Inc.Inventors: Jared L. Zerbe, Fred F. Chen, Andrew Ho, Ramin Farjad-Rad, John W. Poulton, Kevin S. Donnelly, Brian Leibowitz
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Patent number: 9106071Abstract: Apparatus and methods are provided for bootstrap and over voltage protection (OVP) combination clamping. In one embodiment, method is provided to use the same bootstrap capacitors and bootstrap terminals for an over voltage protection circuit. In one embodiment, an integrated circuit for a wireless power receiver comprises a first rectifier input terminal RX1, a second rectifier input terminal RX2, a first bootstrap terminal HSB1, a second bootstrap terminal HSB2. A first and a second bootstrap circuit are coupled to HSB1 and HSB2 to power the rectifier circuit in a regular mode. A over voltage protection (OVP) circuit is coupled between HSB1 and HSB2. The OVP circuit is turned on to connect HSB1 and HSB2 together in an OVP mode.Type: GrantFiled: October 9, 2013Date of Patent: August 11, 2015Assignee: Active-Semi, Inc.Inventor: James A. Kohout
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Patent number: 9000806Abstract: A device may include a latch activated during a second phase of a clock cycle; a clock gating component to control when a clock signal is to reach the latch; a destination storage element activated during a first phase of the clock cycle, where a logical path exists from the latch to the destination storage element; and a blocking element located in the logical path from the latch to the destination storage element, where the blocking element includes, as a first input, an output of the latch and, as a second input, an output of the clock gating component, and where the blocking element prevents an output value of the latch from changing when the clock gating component is not enabled and does not prevent the output value of the latch from changing when the clock gating element is enabled.Type: GrantFiled: May 31, 2013Date of Patent: April 7, 2015Assignee: Advanced Micro Devices, Inc.Inventors: Dwight K. Elvey, Someshwar Gatty
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Patent number: 8937493Abstract: A ternary T arithmetic circuit, including: a logic 0 gate circuit, a logic 1 gate circuit, and a logic 2 gate circuit. The logic 0 gate circuit includes: a first PMOS, a second PMOS, a third PMOS, a first NMOS, a second NMOS, a third NMOS, a fourth NMOS, and a fifth NMOS. The logic 2 gate circuit includes: a fourth PMOS, a fifth PMOS, a sixth NMOS, a seventh NMOS, and an eighth NMOS. The logic 1 gate circuit includes: a sixth PMOS, a seventh PMOS, a ninth NMOS, a tenth NMOS, an eleventh NMOS, and a twelfth NMOS.Type: GrantFiled: March 20, 2014Date of Patent: January 20, 2015Assignee: Ningbo UniversityInventors: Pengjun Wang, Xuesong Zheng, Qiankun Yang
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Patent number: 8933726Abstract: A dynamic voltage scaling system having time borrowing and local boosting capability, including: a time borrowing circuit and a local boost circuit. The time borrowing circuit connected electrically between a primary stage logic circuit and a secondary stage logic circuit is activated by an all-domain clock signal, and then generates an output data to the secondary stage logic circuit based on input data to the primary stage logic circuit. The local boost circuit is connected to a low working voltage line, when input data of the time borrowing circuit lags behind a positive level of said all-domain clock signal, the time borrowing circuit delays fetching data by a flip flop and changes state to produce a warning signal, so that the local boost circuit disconnects its connection with said low working voltage line, and is connected electrically to a high working voltage line.Type: GrantFiled: December 20, 2013Date of Patent: January 13, 2015Assignee: National Chung Cheng UniversityInventor: Jinn-Shyan Wang
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Patent number: 8928354Abstract: A clock-delayed domino logic circuit includes a precharge circuit configured to control connection between a first node and a dynamic node in response to a clock signal, an evaluation circuit configured to control connection between a second node and an evaluation node in response to the clock signal, a logic network connected between the dynamic node and the evaluation node, the logic network configured to determine a logic level of the dynamic node based on a plurality of input signals, and a phase control circuit configured to output a logic level of the evaluation node or a logic level of the first node according to a level of the clock signal.Type: GrantFiled: December 21, 2012Date of Patent: January 6, 2015Assignee: Samsung Electronics Co., Ltd.Inventor: Min Su Kim
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Patent number: 8907700Abstract: A clock-delayed domino logic circuit includes a first pre-charge circuit configured to pre-charge a first dynamic node with a pre-charge voltage in response to a first clock signal received via a first control terminal during a pre-charge operation; a first logic network configured to determine a logic level of the first dynamic node in response to first input data signals during an evaluation operation; and a first storage circuit which is connected between the first control terminal and the first dynamic node.Type: GrantFiled: November 30, 2012Date of Patent: December 9, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Rahul Singh, Hyoung Wook Lee
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Publication number: 20140292373Abstract: A ternary T arithmetic circuit, including: a logic 0 gate circuit, a logic 1 gate circuit, and a logic 2 gate circuit. The logic 0 gate circuit includes: a first PMOS, a second PMOS, a third PMOS, a first NMOS, a second NMOS, a third NMOS, a fourth NMOS, and a fifth NMOS. The logic 2 gate circuit includes: a fourth PMOS, a fifth PMOS, a sixth NMOS, a seventh NMOS, and an eighth NMOS. The logic 1 gate circuit includes: a sixth PMOS, a seventh PMOS, a ninth NMOS, a tenth NMOS, an eleventh NMOS, and a twelfth NMOS.Type: ApplicationFiled: March 20, 2014Publication date: October 2, 2014Applicant: NINGBO UNIVERSITYInventors: Pengjun WANG, Xuesong ZHENG, Qiankun YANG
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Patent number: 8836402Abstract: A phase splitter includes: a first signal path; and a second signal path, wherein the phase splitter outputs an internal signal of the first signal path as a first phase signal, and mixes an output signal of the first signal path with an output signal of the second signal path, thereby outputting a second phase signal having a predetermined phase difference from the first phase signal.Type: GrantFiled: March 18, 2013Date of Patent: September 16, 2014Assignee: SK Hynix Inc.Inventor: Min Sik Han
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Patent number: 8836371Abstract: Methods and systems are disclosed for reduced coupling between digital signal lines. For disclosed embodiments, return-to-zero signaling is dynamically blocked so that high logic levels remain high through entire clock cycles where the next data to be output is also at high logic levels. The dynamically blocked return-to-zero signaling reduces capacitive coupling between digital signal lines, such as clock and data signal lines, that are in close proximity to each other by reducing current flow that would otherwise occur with return-to-zero signaling. The dynamically blocked return-to-zero signaling can be used in a wide variety of environments and implementations.Type: GrantFiled: January 22, 2013Date of Patent: September 16, 2014Assignee: Freescale Semiconductor, Inc.Inventors: Perry H. Pelley, James D. Burnett
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Patent number: 8810279Abstract: A domino logic circuit includes a plurality of domino logic stages connected in series between a latch and a flip-flop and a clock signal generator generating a clock signal having a first duty cycle and a flip-flop clock signal having a second duty cycle. The latch and the domino logic stages respectively operate in response to a domino clock signals derived from the first clock signal. The flip-flop operates in response to the flip-flop clock signal.Type: GrantFiled: December 28, 2012Date of Patent: August 19, 2014Assignee: Samsung Electronics Co., Ltd.Inventors: Ken Keon Shim, Hoi Jin Lee, Gun Ok Jung
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Patent number: 8786348Abstract: A control circuit of a light-emitting element comprises a rectifying unit which full-wave rectifies an alternating current power supply, a clock generator which generates and outputs a clock signal (CLK), a first comparator which compares a comparison voltage (CS) corresponding to a current flowing to the light-emitting element and a reference voltage (REF), and a switching element which is set to an ON state in synchronization with the clock signal (CLK) and which is set to an OFF state when the comparison voltage (CS) becomes greater than the reference voltage (REF) at the first comparator, to switch the current flowing to the light-emitting element. In this structure, a period of the clock signal (CLK) generated in the clock generator is varied, to reduce or inhibit noise.Type: GrantFiled: June 3, 2011Date of Patent: July 22, 2014Assignee: Semiconductor Components Industries, LLCInventors: Shuhei Kawai, Yoshio Fujimura
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Patent number: 8610461Abstract: An apparatus having a first circuit and a second circuit. The first circuit may be configured to generate an output signal in response to (i) an intermediate signal, and (ii) a clock signal. The second circuit may be configured to generate the intermediate signal and a digital complement of the output signal in response to (i) an input signal and (ii) the clock signal. The intermediate signal may form a feedback to ensure the output signal and the digital complement of the output signal are in complementary states during a power up.Type: GrantFiled: September 28, 2011Date of Patent: December 17, 2013Assignee: LSI CorporationInventors: Richard J. Stephani, Amy R. Rittenhouse, Donald A. Evans
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Patent number: 8604832Abstract: A method for increasing performance in a limited switch dynamic logic (LSDL) circuit includes precharging a dynamic node during a precharge phase of a first and second evaluation clock signal. The dynamic node is evaluated to a first logic value in response to one or more first input signals of a first evaluation tree during an evaluation phase of the first evaluation clock signal. The dynamic node is evaluated to a second logic value in response one or more second input signals of a second evaluation tree during an evaluation phase of the second evaluation clock signal. A signal of the LSDL circuit is outputted in response to the dynamic node according to an output latch clock signal.Type: GrantFiled: June 15, 2012Date of Patent: December 10, 2013Assignee: International Business Machines CorporationInventors: Leland Chang, Robert K. Montoye, Yutaka Nakamura
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Patent number: 8582716Abstract: An object of the present invention is to provide a driver circuit including a normally-on thin film transistor, which driver circuit ensures a small malfunction and highly reliable operation. The driver circuit includes a static shift register including an inverter circuit having a first transistor and a second transistor, and a switch including a third transistor. The first to third transistors each include a semiconductor layer of an oxide semiconductor and are depletion-mode transistors. An amplitude voltage of clock signals for driving the third transistor is higher than a power supply voltage for driving the inverter circuit.Type: GrantFiled: January 10, 2013Date of Patent: November 12, 2013Assignee: Semiconductor Energy Laboratory Co., Ltd.Inventors: Jun Koyama, Hiroyuki Miyake
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Publication number: 20130234759Abstract: A clock-delayed domino logic circuit includes a first pre-charge circuit configured to pre-charge a first dynamic node with a pre-charge voltage in response to a first clock signal received via a first control terminal during a pre-charge operation; a first logic network configured to determine a logic level of the first dynamic node in response to first input data signals during an evaluation operation; and a first storage circuit which is connected between the first control terminal and the first dynamic node.Type: ApplicationFiled: November 30, 2012Publication date: September 12, 2013Applicant: SAMSUNG ELECTRONICS CO., LTD.Inventors: Rahul Singh, Hyoung Wook Lee
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Patent number: 8525550Abstract: A circuit implementing multiplexer, storage, and repeater functions is disclosed. The circuit includes first and second input stages having first and second data inputs, respectively. An output stage is configured to drive an output signal. The first input stage is configured to activate the output stage responsive to a first condition, while the second input stage is configured to activate the output stage responsive to a second condition. An intermediate stage is configured to deactivate the output stage at a first delay time subsequent to one of the first or second input stages activating the output stage. The repeater circuit also includes a storage element configured to store a state of the output signal, and further configured to cause the output node to be held at the state of the output signal subsequent to deactivation of the output stage.Type: GrantFiled: October 20, 2010Date of Patent: September 3, 2013Inventors: Robert P. Masleid, Anand Dixit
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Patent number: 8493093Abstract: A limited switch dynamic logic (LSDL) circuit includes a dynamic logic circuit and a static logic circuit. The dynamic logic circuit includes a precharge device configured to precharge a dynamic node during a precharge phase of a first evaluation clock signal and a second evaluation clock signal. A first evaluation tree is configured to evaluate the dynamic node to a first logic value in response to one or more first input signals during an evaluation phase of the first evaluation clock signal. A second evaluation tree is configured to evaluate the dynamic node to a second logic value in response to one or more second input signals during an evaluation phase of the second evaluation clock signal. A static logic circuit is configured to provide an output of the LSDL circuit in response to the dynamic node according to an output latch clock signal.Type: GrantFiled: June 12, 2012Date of Patent: July 23, 2013Assignee: International Business Machines CorporationInventors: Leland Chang, Robert K. Montoye, Yutaka Nakamura
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Patent number: 8461874Abstract: A device may include a latch activated during a second phase of a clock cycle; a clock gating component to control when a clock signal is to reach the latch; a destination storage element activated during a first phase of the clock cycle, where a logical path exists from the latch to the destination storage element; and a blocking element located in the logical path from the latch to the destination storage element, where the blocking element includes, as a first input, an output of the latch and, as a second input, an output of the clock gating component, and where the blocking element prevents an output value of the latch from changing when the clock gating component is not enabled and does not prevent the output value of the latch from changing when the clock gating element is enabled.Type: GrantFiled: July 20, 2011Date of Patent: June 11, 2013Assignee: Advanced Micro Devices, Inc.Inventors: Dwight K. Elvey, Premlatha Paga
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Patent number: 8415982Abstract: A semiconductor integrated circuit device includes: a first inverter constituted by a first transistor configured to charge a charge point based on an input signal, and a second transistor configured to discharge a discharge point based on the input signal; a P-type third transistor and an N-type fourth transistor with drain-source paths provided in parallel between the charge point and the discharge point; and a second inverter configured to invert a potential of the charge point or the discharge point and supply the inverted potential to gates of the third and fourth transistors, and obtain a delay signal of the input signal from the charge point or the discharge point. The semiconductor integrated circuit device secures a sufficient delay time with a small area.Type: GrantFiled: July 8, 2011Date of Patent: April 9, 2013Assignee: Kabushiki Kaisha ToshibaInventors: Chenkong Teh, Hiroyuki Hara
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Patent number: 8405441Abstract: A latch circuit includes an output driver electrically coupled with a circuit. The circuit is electrically coupled with the output driver through a first path and a second path. The circuit is configured to receive a data signal. The circuit is configured to divert a signal of the output driver through the first path at a falling edge of the data signal. The circuit is configured to divert the signal of the output driver through the second path at a rising edge of the data signal.Type: GrantFiled: March 24, 2011Date of Patent: March 26, 2013Assignee: Taiwan Semiconductor Manufacturing Company, Ltd.Inventors: Chien-Kuo Su, Yi-Tzu Chen, Chung-Cheng Chou
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Patent number: 8390329Abstract: A method for controlling a hold buffer delay is provided. A control voltage is generated in response to a measurement of at least one of process variation, temperature variation, and supply voltage variation to compensate for a hold violation, and the delay of a buffer is adjusted using the control voltage. A first data signal is provided in synchronization with a first clock signal. A logic operation is performed on the first signal so as to generate a second data signal. A third data signal is generated and outputted in synchronization with a second clock signal, and at least one of the first and second data signals is buffered with the buffer.Type: GrantFiled: December 12, 2011Date of Patent: March 5, 2013Assignee: Texas Instruments IncorporatedInventor: Srinivasa R. Sridhara
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Patent number: 8384438Abstract: A conversion circuit includes a first inverter having an input node configured to receive a single-ended signal and second and third inverters each having respective inputs coupled to an output of the first inverter. A fourth inverter has an input coupled to an output of the second inverter and has an output coupled to a first node. A fifth inverter has an input coupled to the first node and an output coupled to a second node to which an output of the third inverter is coupled. Sixth and seventh inverters are configured to respectively output a differential signal based on the single-ended signal. The sixth inverter has an input coupled to the first node, and the seventh inverter has an input coupled to the second node.Type: GrantFiled: August 11, 2011Date of Patent: February 26, 2013Assignee: Initio CorporationInventors: Zhenchang Du, Haiming Tang, Wei Wang
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Publication number: 20130002300Abstract: In embodiments of a serializing transmitter, the serializing transmitter includes one or more multiplexing drive units that each generate a series of output pulses derived from input data signals and multi-phase clock signals. Each of the multiplexing drive units includes a pulse-controlled push-pull output driver that has first and second inputs, and an output coupled to an output of the multiplexing drive unit. Each of the multiplexing drive units also includes a first M:1 (where M is two or more) pulse-generating multiplexer having an output coupled to the first input of the pulse-controlled push-pull output driver, and generating a first series of intermediate pulses at the output; and a second M:1 pulse-generating multiplexer having an output coupled to the second input of the pulse-controlled push-pull output driver, and generating a second series of intermediate pulses at the output.Type: ApplicationFiled: June 28, 2011Publication date: January 3, 2013Applicant: MICROSOFT CORPORATIONInventor: Alan S. Fiedler
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Patent number: 8269712Abstract: A high-reliability gate driving circuit is disclosed for providing a plurality of gate signals to plural gate lines respectively. The gate driving circuit includes a plurality of shift register stages. Each shift register stage includes a pull-up unit, an energy-store unit, a buffer unit, a discharging unit, a first pull-down unit, a second pull-down unit and a control unit. The pull-up unit pulls up a gate signal according to a driving control voltage and a first clock. The buffer unit receives an input signal. The energy-store unit provides the driving control voltage through performing a charging process based on the input signal. The first pull-down unit pulls down the gate signal according to a control signal. The second pull-down unit pulls down the gate signal according to a second clock having a phase opposite to the first clock. The control unit generates the control signal based on the gate signal.Type: GrantFiled: May 13, 2009Date of Patent: September 18, 2012Assignee: Chunghwa Picture Tubes, Ltd.Inventors: Chih-Jen Shih, Chun-Kuo Yu, Chun-Yuan Hsu
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Publication number: 20120169383Abstract: A first conversion circuit converts a first clock signal based on a signal level of a first voltage into a second clock signal based on a signal level of a second voltage. A flip-flop circuit supplied with the first voltage as an operation voltage latches and outputs a signal, which is based on the signal level of the first voltage, in accordance with the first clock signal. A second conversion circuit supplied with the second voltage as an operation voltage converts a signal level of an input signal, which is based on an output signal of the flip-flop circuit, into the signal level of the second voltage in synchronization with the second clock signal.Type: ApplicationFiled: December 19, 2011Publication date: July 5, 2012Applicant: FUJITSU SEMICONDUCTOR LIMITEDInventors: Tomoya KAKAMU, Hisao SUZUKI, Yuji SEKIDO
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Publication number: 20110260754Abstract: A semiconductor integrated circuit device includes: a first inverter constituted by a first transistor configured to charge a charge point based on an input signal, and a second transistor configured to discharge a discharge point based on the input signal; a P-type third transistor and an N-type fourth transistor with drain-source paths provided in parallel between the charge point and the discharge point; and a second inverter configured to invert a potential of the charge point or the discharge point and supply the inverted potential to gates of the third and fourth transistors, and obtain a delay signal of the input signal from the charge point or the discharge point. The semiconductor integrated circuit device secures a sufficient delay time with a small area.Type: ApplicationFiled: July 8, 2011Publication date: October 27, 2011Applicant: KABUSHIKI KAISHA TOSHIBAInventors: Chenkong Teh, Hiroyuki Hara
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Patent number: 7994823Abstract: A flip-flop circuit having a scan function includes an internal clock generator to receive a clock signal, a scan enable signal, and a first input signal, and to output an internal timing signal based on each of the clock signal, the scan enable signal, and the first input signal. The circuit includes a dynamic input unit to receive a second input signal, the scan enable signal, a first timing signal, and the internal timing signal, and to output a first output signal. The circuit also includes a static output unit to receive the first timing signal and the first output signal and to output a static output signal, and the dynamic input unit outputs the first output signal corresponding to one of the first input signal and the second input signal, respectively, based on a status of the scan enable signal.Type: GrantFiled: June 8, 2010Date of Patent: August 9, 2011Assignee: SAMSUNG Electronics Co., Ltd.Inventors: Hyoung Wook Lee, Min-Su Kim
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Patent number: 7990199Abstract: A clock gater includes a first circuit configured to receive a clock signal. The first circuit includes a first subcircuit and a second subcircuit. A latch is configured to receive the clock signal. The latch is connected to the first circuit at each of a first node and a second node. The latch includes a third subcircuit and a fourth subcircuit. The first subcircuit and the third subcircuit are configured to pull the first node and the second node, respectively, to a common precharge voltage in response to a first state of the clock signal in order to pass the clock signal. The second subcircuit and the fourth subcircuit are configured to pull the first node and the second node, respectively, to complementary voltages in response to a second state of the clock signal in order to pass the clock signal, the second state of the clock signal being different from the first state of the clock signal.Type: GrantFiled: December 23, 2009Date of Patent: August 2, 2011Assignee: Marvell International Ltd.Inventor: Jason T. Su
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Patent number: 7859308Abstract: Reconfigurable logic cells based on dual gate MOSFET transistors (DG MOSFETs) including n inputs (A,B), n being greater than or equal to 2 and capable of performing at least four logic functions with which logical signals provided on the n inputs (A,B) may be processed. The cell contains, between the ground and the output (F) of the cell, at least one first branch including n dual gate N-type MOSFET transistors (M1,M2) in series and n?1 branches in parallel with the first branch, each provided with a dual gate N-type MOSFET transistor (M3), each of the logic functions corresponding to a given configuration of the cell. A specific set of control signals (C1,C2) is applied on the rear gates of at least one portion of the transistors (M2,M3), each control signal (C1,C2) being capable of setting the transistor (M2,M3) to a particular operating mode.Type: GrantFiled: July 11, 2008Date of Patent: December 28, 2010Assignees: Ecole Centrale de Lyon, Centre National de la Recherche Scientifique (CNRS)Inventors: Ian D. O'Connor, Ilham Hassoune
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Patent number: RE50010Abstract: Provided are semiconductor circuits. A semiconductor circuit includes a first circuit configured to propagate a value of a first node to a second node based on a voltage level of a clock signal; a second circuit configured to propagate a value of the second node to a third node based on the voltage level of the clock signal; and a third circuit configured to determine a value of the third node based on a voltage level of the second node and the voltage level of the clock signal, wherein the first circuit comprises a first transistor gated to a voltage level of the first node, a second transistor connected in series with the first transistor and gated to the voltage level of the third node, and a third transistor connected in parallel with the first and second transistors and gated to a voltage level of the clock signal to provide the value of the first node to the second node.Type: GrantFiled: February 15, 2022Date of Patent: June 11, 2024Assignee: SAMSUNG ELECTRONICS CO., LTD.Inventors: Ah-Reum Kim, Hyun Lee, Min-su Kim