公开(公告)号：US20180138859A1

公开(公告)日：2018-05-17

申请号：US15784660

申请日：2017-10-16

Applicant: Samsung Electronics Co., Ltd.

Inventor： Eun-seok SHIN ,  Se-ra AN ,  Jae-jin PARK ,  Seung-hoon LEE ,  Do-hyung KIM ,  Min-young KANG

IPC: H03B1/04 ,  H03B5/24 ,  H03K21/02 ,  H03H9/02 ,  G01N29/02 ,  G01N29/036

CPC classification number: H03B1/04 ,  G01N29/022 ,  G01N29/036 ,  G01N29/2437 ,  G01N29/32 ,  G01N29/4427 ,  G01N29/4463 ,  G01N2291/014 ,  G01N2291/021 ,  G01N2291/0255 ,  G01N2291/0256 ,  H03B5/24 ,  H03B5/326 ,  H03B5/364 ,  H03H9/02007 ,  H03K21/026

Abstract: A resonator oscillator that may be included in a gas sensing system may include an oscillator that may be electrically connected to an external resonator through a conductive line. The oscillator may generate an oscillating signal having a frequency corresponding to a resonance frequency of the external resonator in an oscillating path. A spurious resonance removal circuit on the oscillating path may remove spurious resonance caused by the conductive line from the oscillating path. A gas sensing system may include the oscillator, a resonator that includes a sensor configured to sense a gas, and a frequency counting logic that receives the oscillating signal and a reference clock signal, performs a counting operation on the oscillating signal according to a logic state of the reference clock signal to generate a counted value, and generate a gas sensing output indicating a sensed gas based on the counted value.

公开(公告)号：US20200244252A1

公开(公告)日：2020-07-30

申请号：US16734721

申请日：2020-01-06

Applicant: Samsung Electronics Co., Ltd.

Inventor： Yong-min KIM ,  Kyung-hoon LEE ,  Eun-seok SHIN ,  Michael CHOI

IPC: H03K3/037 ,  H03K19/0185 ,  G09G3/3258

Abstract: A level shifter for outputting an output voltage having a voltage level range different from a voltage level range of a received input voltage is disclosed. The level shifter includes: a current mirror configured to copy a reference current flowing through a first mirror transistor to a second mirror transistor; a current mirror control circuit electrically connected to the current mirror by a sink node and including a plurality of control transistors configured to control the current mirror; and an output circuit configured to output an output voltage based on a voltage level of the sink node, wherein a first control transistor of the plurality of control transistors receives the output voltage fed back to a gate terminal of the first control transistor, and a second control transistor of the plurality of control transistors receives an inverted output voltage fed back to a gate terminal of the second control transistor.