公开(公告)号：US11967962B2

公开(公告)日：2024-04-23

申请号：US17860519

申请日：2022-07-08

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jusung Lee ,  Wooseok Kim ,  Wonsik Yu ,  Chanyoung Jeong

IPC: H03L7/099 ,  H03L7/07 ,  H03L7/091 ,  H03L7/18

CPC classification number: H03L7/0991 ,  H03L7/07 ,  H03L7/091 ,  H03L7/18

Abstract: A frequency-locked loop (FLL) logic circuit, including a validity signal generator configured to receive an external clock signal and determine whether a glitch occurs in the external clock signal; a clock divider configured to generate a reference frequency clock signal based on the external clock signal and a determination result of the validity signal generator; a synchronizer configured to synchronize a phase of an oscillator clock signal with a phase of the reference frequency clock signal; a clock counter configured to count a number of pulses of the oscillator clock signal during a reference time; and a code limiter configured to determine a range of a frequency selection value for calibrating an operating frequency of the oscillator clock signal based on the counted number of pulses.

公开(公告)号：US11789482B2

公开(公告)日：2023-10-17

申请号：US17702482

申请日：2022-03-23

Applicant: SAMSUNG ELECTRONICS CO., LTD.

Inventor： Jusung Lee ,  Wooseok Kim ,  Taeik Kim ,  Chanyoung Jeong

IPC: G05F3/30 ,  H03K3/011 ,  H03K5/24 ,  G05F1/56

CPC classification number: G05F3/30 ,  G05F1/56 ,  H03K3/011 ,  H03K5/24

Abstract: A bandgap reference circuit includes a reference current generation circuit configured to output a bandgap reference current insensitive to a temperature change, by using a first voltage inversely proportional to temperature and a third voltage proportional to temperature. The third voltage is a difference between the first voltage and a second voltage. The bandgap reference circuit further includes a resistivity temperature coefficient cancellation circuit configured to remove a first current proportional to temperature from the bandgap reference current by using the third voltage, and a reference voltage generation circuit configured to output a bandgap reference voltage insensitive to a temperature change by using a second current inversely proportional to temperature and a first resistance proportional to temperature. The second current is generated by removing the first current from the bandgap reference current.

公开(公告)号：US11824663B2

公开(公告)日：2023-11-21

申请号：US17519818

申请日：2021-11-05

Applicant: Samsung Electronics Co., Ltd.

Inventor： Dongho Kim ,  Jongmin Baik ,  Jusung Lee

IPC: H04L1/1829 ,  H04L1/1812 ,  H04B17/309 ,  H04L1/1867 ,  H04W72/21

CPC classification number: H04L1/1854 ,  H04B17/309 ,  H04L1/1812 ,  H04L1/1835 ,  H04L1/1848 ,  H04L1/1874 ,  H04W72/21

Abstract: Various embodiments of the disclosure relate to an apparatus and a method for managing a communication buffer of an electronic device in the electronic device. The electronic device includes: a wireless communication circuit, an application processor, and a communication processor operatively connected to the wireless communication circuit and the application processor and including a communication buffer, wherein the communication processor is configured to: identify a Radio Link Control (RLC) retransmission time, identify an uplink transmission rate, and configure a size of an area for storing data in the communication buffer based on the RLC retransmission time and the uplink transmission rate.