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公开(公告)号：US11598797B2
公开(公告)日：2023-03-07
申请号：US17682356
申请日：2022-02-28
Applicant: SAMSUNG ELECTRONICS CO., LTD.
Inventor： Hyun Seok Nam
Abstract: A duty timing detector includes: a control logic, the control logic being configured to: receive an input toggle signal and an output toggle signal that corresponds to the input toggle signal, and generate a difference signal using a difference between a duty of the input toggle signal and a duty of the output toggle signal; a first low-pass filter configured to output a DC input voltage based on a pulse width of the input toggle signal; a second low-pass filter configured to output a DC difference voltage based on a pulse width of the difference signal; a compensation circuit configured to compensate the duty of the output toggle signal using the DC input voltage and the DC difference voltage; and an oscillator configured to generate a duty-compensated output toggle signal, and to provide the duty-compensated output toggle signal to the control logic.
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公开(公告)号：US10931268B2
公开(公告)日：2021-02-23
申请号：US16127886
申请日：2018-09-11
Applicant: SK hynix Inc.
Inventor： Tae-Gyu Kim
Abstract: A ramp signal generation device includes a sampling circuit suitable for sampling a ramp current and storing a voltage corresponding to the sampled ramp current; a current maintaining circuit suitable for maintaining the ramp current; a current transferring circuit suitable for transferring a current corresponding to the voltage stored on the sampling circuit; and a current-to-voltage converter suitable for converting and generating a ramp voltage corresponding to the current transferred from the current transferring circuit.
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公开(公告)号：US10763832B2
公开(公告)日：2020-09-01
申请号：US15853015
申请日：2017-12-22
Applicant: TEXAS INSTRUMENTS INCORPORATED
Inventor： Aniruddha Roy , Nitin Agarwal , Rajavelu Thinakaran
IPC: H03K3/0231 , H03K4/502 , H03K3/011
Abstract: Trimming components within an oscillator comprising: a trim-capable current source, wherein the trim-capable current source comprises a trimmable resistor and a trimmable current component, a comparator comprising a first input terminal that couples to the trim-capable current source and the second input terminal that couples to a reference voltage source, a switch coupled to the first input terminal and the trim-capable current source, and a trim-capable capacitor coupled to the switch, wherein the switch is coupled between the trim-capable capacitor and the trim-capable current source.
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公开(公告)号：US10729363B1
公开(公告)日：2020-08-04
申请号：US15664838
申请日：2017-07-31
Applicant: Verily Life Sciences LLC
Inventor： Brian Otis , Nathan Pletcher
Abstract: This disclosure relates to systems and/or methods for subtracting in the current domain an output current primary signal from a primary sensor from an output current reference signal from a reference sensor to produce a frequency output signal indicative of the difference between the output current primary signal and the output current reference signal.
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公开(公告)号：US20200162062A1
公开(公告)日：2020-05-21
申请号：US16197184
申请日：2018-11-20
Inventor： Yihui Chen , Alex Xiao , Wendy Mao , Jie He
IPC: H03K4/502 , H03K3/011 , H03K3/0231
Abstract: Techniques for compensating temperature-dependent aspects of oscillator circuits are provided. In an example, an oscillator circuit can include an oscillator capacitor, a comparator and overshoot compensation circuitry for providing an oscillation period insensitive to a temperature-dependent comparator overshoot. The oscillator capacitor can be charged during a charging portion of the oscillation period and can be discharged during a discharging portion of the oscillation period. The comparator can determine when the oscillator capacitor has been charged to a first threshold. The overshoot compensation circuitry can store an indication of temperature-dependent comparator overshoot and, in response, generate and apply an adjustable reference voltage or pre-charge to a terminal of the oscillator capacitor.
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Patent Agency Ranking
公开(公告)号：US20190386650A1
公开(公告)日：2019-12-19
申请号：US16439028
申请日：2019-06-12
Applicant: ABLIC Inc.
Inventor： KAORU SAKAGUCHI
IPC: H03K5/24 , H03K4/502 , H03K3/0231
Abstract: A comparator includes a first constant current source, a first transistor having a drain connected to the first constant current source, a gate connected to a non-inverted input terminal, and a source connected to an inverted input terminal, a second constant current source connected between the inverted input terminal and a second power supply terminal, a second transistor having a source connected to a first power supply terminal, a gate connected to the drain of the first transistor, and a drain connected to an output terminal, and a third constant current source connected between the drain of the second transistor and the second power supply terminal. An oscillation circuit includes comparators in which at least one of the comparators is a comparator described above.
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公开(公告)号：US10256797B2
公开(公告)日：2019-04-09
申请号：US15312282
申请日：2015-06-02
Applicant: Agency for Science, Technology and Research
Inventor： Yat Hei Lam
Abstract: According to embodiments of the present invention, an oscillator is provided. The oscillator includes a switched capacitor circuit arrangement configured to generate a predetermined voltage, a transconductance-capacitor filter configured to receive the predetermined voltage and a reference voltage, and to generate an output filter voltage based on a differential result between the predetermined voltage and the reference voltage, wherein a value of the output filter voltage is variable in response to the differential result, and a period control circuit arrangement configured to receive the output filter voltage, and further configured to generate an oscillator signal, wherein a period of the oscillator signal is variable in response to the value of the output filter voltage, wherein the oscillator is configured to control the switched capacitor circuit arrangement based on the oscillator signal to generate the predetermined voltage to be matched to the reference voltage.
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公开(公告)号：US20170324404A1
公开(公告)日：2017-11-09
申请号：US15661690
申请日：2017-07-27
Applicant: FAIRCHILD KOREA SEMICONDUCTOR LTD.
Inventor： Taesung KIM , Seunguk YANG , Youngbae PARK
Abstract: Examples of a signal calculator include a voltage multiplier and a time divider. The voltage multiplier copies time information corresponding to a first voltage and generates a third voltage using a second current corresponding to a second voltage during a first period corresponding to the copied time information. The time divider generates an output according to a result of comparing a voltage generated by a first current on the basis of a voltage corresponding to a first time with a second voltage corresponding to a second time.
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59.发明申请公开(公告)号：US20170264847A1
公开(公告)日：2017-09-14
申请号：US15605494
申请日：2017-05-25
Applicant: Renesas Electronics Corporation
Inventor： Yasutoshi AIBARA
CPC classification number: H04N5/378 , H03K4/502 , H04N5/2355 , H04N5/243 , H04N5/35527 , H04N5/3742
Abstract: Conventional semiconductor devices disadvantageously failed to sufficiently enlarge a dynamic range. A semiconductor device according to an embodiment includes a plurality of registers 21 to 26 that sets a gradient of a ramp signal. In the semiconductor device, the values in the registers 24 to 26 that are reflected in the gradient of the ramp signal are switched at predetermined timings, whereby a ramp signal with a gradient that changes at the predetermined timings is generated, and an analog-to-digital converter uses the ramp signal to convert pixel signals acquired from a pixel area into digital values.
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公开(公告)号：US20170104475A1
公开(公告)日：2017-04-13
申请号：US15312282
申请日：2015-06-02
Applicant: Agency for Science, Technology and Research
Inventor： Yat Hei Lam
CPC classification number: H03K4/502 , H03B5/24 , H03H11/0422 , H03K3/02 , H03K3/0231 , H03K3/0377 , H03L7/107 , H03L7/1075
Abstract: According to embodiments of the present invention, an oscillator is provided. The oscillator includes a switched capacitor circuit arrangement configured to generate a predetermined voltage, a transconductance-capacitor filter configured to receive the predetermined voltage and a reference voltage, and to generate an output filter voltage based on a differential result between the predetermined voltage and the reference voltage, wherein a value of the output filter voltage is variable in response to the differential result, and a period control circuit arrangement configured to receive the output filter voltage, and further configured to generate an oscillator signal, wherein a period of the oscillator signal is variable in response to the value of the output filter voltage, wherein the oscillator is configured to control the switched capacitor circuit arrangement based on the oscillator signal to generate the predetermined voltage to be matched to the reference voltage.
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