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公开(公告)号：US20220014194A1
公开(公告)日：2022-01-13
申请号：US17291745
申请日：2019-11-06
IPC分类号： H03K19/0185 , H03K19/00 , H03K19/0948
摘要： A level shift circuit according to an embodiment of the present technology includes an input section, a supply section, and a regulator. An input signal of a first power supply system is input to the input section. The supply section includes a pair of nodes, the supply section being connected to one of a pair of power supply lines serving as a second power supply system of which a voltage level is higher than a voltage level of the first power supply system, the supply section supplying a potential of the one of the pair of power supply lines to one of the pair of nodes according to the input signal. The regulator is connected to another of the pair of power supply lines, the regulator regulating current flowing between the one of the pair of nodes that is supplied with the potential of the one of the pair of power supply lines, and the other of the pair of power supply lines.
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公开(公告)号：US20230261623A1
公开(公告)日：2023-08-17
申请号：US18001846
申请日：2021-04-27
发明人： MASAHIRO ICHIHASHI , MASAYUKI KATAKURA , KAZUMASA NISHIMURA , TETSUYA TASHIRO , NOBUHIKO SHIGYO
CPC分类号： H03F3/45475 , H03F3/005 , H03F2203/45551
摘要： To improve stability of a reference current in a current source circuit that generates the reference current by using capacitors. The current source circuit includes a pair of capacitors, a switching circuit, an operational amplifier, and an output transistor. The switching circuit charges one of the pair of capacitors with a predetermined charging current, and transfers electric charge from the one of the pair of capacitors to the other of the pair of capacitors. The operational amplifier amplifies a difference between the terminal voltage of the other of the pair of capacitors and a predetermined reference voltage and outputs the difference that has been amplified as an output voltage. The output transistor outputs a current corresponding to the output voltage as a reference current.
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公开(公告)号：US20210152083A1
公开(公告)日：2021-05-20
申请号：US16611922
申请日：2018-05-01
发明人： MASAHIRO ICHIHASHI , KENYA KONDOU , KAZUMASA NISHIMURA , SYOU MITSUISHI , TOSHIO SUZUKI , NOBUHIKO SHIGYO , MASAYUKI KATAKURA , MOTOYASU YANO
摘要： An object of the present technology is to stably operate a power supply circuit. A charge switch is connected to a first terminal of a capacitor and charges the capacitor with an input voltage on the basis of a control signal inputted to a control terminal. A discharge switch is complementary with the charge switch, is connected to the first terminal of the capacitor, and discharges on the basis of the control signal inputted to the control terminal the voltage charged to the capacitor, thereby generating an output voltage. A charge control signal converting section converts a charge control signal that controls the charge into a control signal referenced to the input voltage and inputs the resulting control signal to the control terminal of the charge switch. A discharge control signal converting section converts a discharge control signal that controls the discharge into a control signal referenced to the output voltage and inputs the resulting control signal to the control terminal of the discharge switch. A pulse voltage supplying section supplies a pulse voltage to a second terminal. A control signal generating section exclusively generates the charge control signal and the discharge control signal and supplies the charge control signal and the discharge control signal.
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公开(公告)号：US20230049639A1
公开(公告)日：2023-02-16
申请号：US17760170
申请日：2020-12-28
发明人： MASAHIRO ICHIHASHI
摘要： To reduce power consumption of a driver circuit used in a vertical drive circuit of an image processing device.
In the driver circuit, a drive signal output circuit outputs a drive signal in accordance with a predetermined trigger signal. Furthermore, at a time of rising of the drive signal, a step-up switch sequentially selects a plurality of voltages in ascending order, and supplies the selected voltage to the drive signal output circuit. Moreover, at a time of falling of the drive signal, a step-down switch sequentially selects a plurality of voltages in descending order, and supplies the selected voltage to the drive signal output circuit.-
公开(公告)号：US20210281169A1
公开(公告)日：2021-09-09
申请号：US16609811
申请日：2018-04-24
发明人： MASAHIRO ICHIHASHI , KENYA KONDOU , KAZUMASA NISHIMURA , SYOU MITSUISHI , TOSHIO SUZUKI , NOBUHIKO SHIGYO , MASAYUKI KATAKURA , MOTOYASU YANO
摘要： A charge pump circuit by which fundamental issues involved in the voltage feedback type charge pump circuit have been solved is realized. A power supply circuit includes a charge pump circuit, a feedback circuit feeding an output of the charge pump circuit back to an input of the charge pump circuit, a first current source causing a constant current to flow through the feedback circuit, a MOS transistor element interposed in a middle of the feedback circuit, a resistor element interposed at a position closer to the output of the charge pump circuit than the MOS transistor element in the feedback circuit, a bias circuit applying a constant voltage to a control terminal of the MOS transistor element, and a control section controlling a value of the constant current which the first current source flows through the feedback circuit.
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公开(公告)号：US20210242838A1
公开(公告)日：2021-08-05
申请号：US17049901
申请日：2019-02-08
发明人： KAZUMASA NISHIMURA , MASAHIRO ICHIHASHI , MASAYUKI KATAKURA , KENYA KONDOU , TETSUYA TASHIRO , BOYANG HAO , KOUZI TSUKAMOTO
摘要： To easily adjust a gain of an amplifier. An applied input signal is input to a gate terminal of a first transistor, and a current depending on the applied input signal flows through the first transistor. A load section is connected to a drain terminal of the first transistor. A gate terminal of a second transistor is connected to the load section, and a current depending on a change in a voltage of the drain terminal of the first transistor flows through the second transistor. A source terminal of the first transistor and a drain terminal of the second transistor are connected in common to a first resistance, and the current from the first transistor and the current from the second transistor flow through the first resistance. A third transistor supplies a current approximately equal to the current of the second transistor. The current supplied by the third transistor is output from an output end.
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