公开(公告)号：US11770080B1

公开(公告)日：2023-09-26

申请号：US17844692

申请日：2022-06-20

Applicant: Elite Semiconductor Microelectronics Technology Inc.

Inventor： Ming-Fu Tsai

IPC: H02P6/08 ,  H02P6/06 ,  H02P27/08 ,  H02K11/33

CPC classification number: H02P6/08 ,  H02K11/33 ,  H02P6/06 ,  H02P27/08

Abstract: A method for increasing a resolution by N bits performed by a processing circuit of a motor driving system, where N is a positive integer, and the method includes: performing a conversion upon an analog command, to generate a command count value; performing a first N-bit right-shifting operation upon the command count value, to generate an initial output value; performing a logical operation upon the command count value, to generate a low bit value; generating an overflow value according to the low bit value; and determining a final output value according to the initial output value and the overflow value.

公开(公告)号：US11601753B2

公开(公告)日：2023-03-07

申请号：US17344907

申请日：2021-06-10

Applicant: Elite Semiconductor Microelectronics Technology Inc.

Inventor： Hsin-Yuan Chiu ,  Tsung-Fu Lin

IPC: H04R3/14 ,  H03G5/00 ,  H04R3/04 ,  H03G5/02 ,  H03G5/16

Abstract: A parametric equalizer includes an equalizer circuit, a first protection circuit, a second protection circuit, and a first addition circuit. The equalizer circuit is arranged to receive an input signal, and process the input signal to generate an output signal. The first protection circuit is arranged to generate a first protection signal according to the output signal, the input signal, and a first processed signal. The second protection circuit is arranged to generate a second protection signal according to the input signal and a second processed signal. The first addition circuit is coupled to the first protection circuit and the second protection circuit, and is arranged to combine the first protection signal and the second protection signal to generate an equalizer output signal.

公开(公告)号：US11570563B1

公开(公告)日：2023-01-31

申请号：US17382393

申请日：2021-07-22

Applicant: Elite Semiconductor Microelectronics Technology Inc.

Inventor： Jung-Kuei Chang ,  Wun-Long Yu

IPC: H04R29/00 ,  H04B17/309

Abstract: A loudspeaker controller for estimating a fundamental resonance frequency of a loudspeaker includes: an amplifier circuit, arranged to generate a driving signal of the loudspeaker according to an audio input signal; a sensing circuit, arranged to sense characteristics of the driving signal to generate a measurement signal; a plurality of band pass filter circuits, arranged to filter the measurement signal to generate a plurality of filter outputs, respectively, wherein the plurality of band pass filter circuits have different passbands; and an estimation circuit, arranged to estimate the fundamental resonance frequency according to the plurality of filter outputs.

公开(公告)号：US11489499B1

公开(公告)日：2022-11-01

申请号：US17396853

申请日：2021-08-09

Applicant: Elite Semiconductor Microelectronics Technology Inc.

Inventor： Tsung-Fu Lin ,  Hsin-Yuan Chiu

IPC: H03F3/217 ,  H03F3/38 ,  H03F1/02

Abstract: A switch circuit provides a first output signal and a second output signal for switching between ternary modulation and quaternary modulation for a target device. A first output signal is provided from one of a first signal, a second signal and a ground signal according to an input signal and a duty signal, wherein the first signal is generated through performing a one-bit left-shift operation for the input signal, and the second signal is generated through adding the input signal and the duty signal. A second output signal is provided from one of a third signal, a fourth signal and the ground signal according to the input signal and the duty signal, wherein the third signal is generated through subtracting the input signal from the duty signal, and the fourth signal is generated through performing a two's-complement transformation and the one-bit left-shift operation for the input signal.

公开(公告)号：US11482952B1

公开(公告)日：2022-10-25

申请号：US17496747

申请日：2021-10-07

Applicant: Elite Semiconductor Microelectronics Technology Inc.

Inventor： Shih-Chieh Wang ,  Yong-Yi Jhuang ,  Ming-Fu Tsai

IPC: H02P6/00 ,  H02P6/16 ,  H02P6/182

Abstract: A method for determining zero crossing occurrence in an alternating current (AC) signal with constant frequency of a permanent magnet synchronous motor (PMSM) includes: sampling the AC signal to obtain a plurality of data points; starting to count a number of consecutive data points that have sampled values with a same sign in a detection range, to generate a count value, wherein the consecutive data points are included in the plurality of data points; determining whether the count value is equal to a zero crossing determination value; and in response to the count value being equal to the zero crossing determination value, determining that a zero crossing occurs at a last data point of the consecutive data points.

公开(公告)号：US20220223213A1

公开(公告)日：2022-07-14

申请号：US17149689

申请日：2021-01-14

Applicant: ELITE SEMICONDUCTOR MICROELECTRONICS TECHNOLOGY INC.

Inventor： MING-XUN WANG ,  CHIH-HAO CHEN ,  JI-JR LUO

IPC: G11C16/34 ,  G11C16/14 ,  G11C16/30 ,  G11C16/26 ,  G11C16/24

Abstract: A post over-erase correction (POEC) method with an auto-adjusting verification mechanism and a leakage degree detection function detects gm degradation or leakage degree of flash cells before or after entering the POEC process. When a preset condition is satisfied, the auto-adjusting verification mechanism of the POEC is switched on to further reduce leakage current. After cycling, the POEC repairs Vt of over-erased cells to a higher level to solve leakage issues. The erase shot count increases due to slower erase speeds after cycling. Therefore, the cycling degree of flash cells is detected by observing the shot number that the erase operation used. When the leakage phenomenon becomes serious, the bit line (BL) leakage current, amount of repaired BLs, and over-erase correction (OEC) shot number will increase during the OEC procedure. Therefore, the leakage degree of flash cells can be detected by inspecting the above data.