公开(公告)号：US20250063478A1

公开(公告)日：2025-02-20

申请号：US18529282

申请日：2023-12-05

Applicant: Silicon Laboratories Inc.

Inventor： Manav Kumar Mehta ,  Hasan Ali Stationwala ,  Atul Suresh Joshi ,  Mathieu Kardous ,  Ashish Bajaj

IPC: H04W48/16 ,  H04W48/20 ,  H04W60/04 ,  H04W60/06

Abstract: A system and various methods to implement a Digital Twin with a low power Wi-Fi device is disclosed. The low power Wi-Fi device seeks a Digital Twin at the time of commissioning to serve as its proxy node while it is in sleep mode. Additionally, techniques to address the situation where the Digital Twin becomes unavailable are also disclosed. Finally, techniques to create and update a chain of Digital Twins are also disclosed.

公开(公告)号：US20250060409A1

公开(公告)日：2025-02-20

申请号：US18235156

申请日：2023-08-17

Applicant: Silicon Laboratories Inc.

Inventor： Timothy Thomas Rueger ,  DeWitt Clinton Seward ,  Gang Yuan

IPC: G01R31/30 ,  G01R19/165 ,  G01R31/40 ,  G06F21/75

Abstract: Positive and negative glitch detectors detect glitches on a supply voltage node. The positive glitch detector has a capacitor and a resistor serially coupled between the supply voltage node and ground. An amplifier is coupled to a first node between the capacitor and resistor. A positive glitch results in the glitch on the first node (normally biased low) and generation of a clock pulse by the amplifier that causes a latch to assert its output to indicate the positive glitch. The negative glitch detector has a capacitor and resistor coupled in parallel between the supply voltage node and a second node. A negative glitch on the supply voltage node decreases the voltage on the second node (normally biased high) and an inverting amplifier coupled to the second node generates a clock pulse to cause a latch to assert its output to indicate the negative voltage glitch.

公开(公告)号：US20250044393A1

公开(公告)日：2025-02-06

申请号：US18921236

申请日：2024-10-21

Applicant: Silicon Laboratories Inc.

Inventor： Anant Verma

IPC: G01R35/00 ,  G01R21/06 ,  G01R31/26

Abstract: A system and method for performing production testing on high power semiconductor devices is disclosed. The system includes signal generators, RF meters, sockets, couplers and connectors which also function as switches when connected to an external cable. A calibration process is executed which allows the controller to create a correlation between measurements taken by the RF meter and the actual voltages, and power levels present at the device under test. By performing this calibration, it is possible to perform production testing of devices much more quickly and reliably.

公开(公告)号：US20250036504A1

公开(公告)日：2025-01-30

申请号：US18225471

申请日：2023-07-24

Applicant: Silicon Laboratories Inc.

Inventor： Thomas David

IPC: G06F11/07 ,  G06F8/65

Abstract: Methods of performing updates to a software image that is disposed in a read only memory or a one time programmable memory device are disclosed. The method includes causing an ECC error at the beginning of a function that has been modified. This ECC error causes an exception. The exception handler determines the address where the ECC error was detected was located and searches a dictionary. This dictionary contains entries that each have an original address in the ROM or OTP Memory and the patch address in a nonvolatile writable memory. The exception handler then causes the processing unit to jump to the patch address, where a modified function is located.

公开(公告)号：US12210365B2

公开(公告)日：2025-01-28

申请号：US16848424

申请日：2020-04-14

Applicant: Silicon Laboratories Inc.

Inventor： Mehmet Akif Altan ,  Steffen Skaug

IPC: H03F3/45 ,  G05F1/565 ,  G05F1/575

Abstract: An apparatus includes an amplifier. The amplifier has two inputs, and an output. The amplifier has a pole in its transfer function. The frequency of the pole depends on the output current of the amplifier. The amplifier further includes a pole frequency tracking (PFT) circuit. The PFT circuit includes a source follower circuit.

公开(公告)号：US20250024380A1

公开(公告)日：2025-01-16

申请号：US18357329

申请日：2023-07-24

Applicant: Silicon Laboratories Inc.

Inventor： Hendricus De Ruijter

IPC: H04W52/24 ,  H04W52/36 ,  H04W52/50

Abstract: In one aspect, a method includes: detecting, in a receiver of a wireless device, an energy of a first wireless channel; determining whether the detected energy is within a range between a first threshold and a second threshold; and in response to determining that the detected energy is within the range, transmitting, from a transmitter of the wireless device, a first radio frequency (RF) signal within the first wireless channel at a power level less than a maximum power level.

公开(公告)号：US12193128B2

公开(公告)日：2025-01-07

申请号：US17706796

申请日：2022-03-29

Applicant: Silicon Laboratories Inc.

Inventor： Levente Kovacs

IPC: H05B47/19 ,  H05B47/155

Abstract: A system and method for the commissioning of a lighting system is disclosed. The lighting system includes a plurality of lighting devices and a plurality of locators. Each lighting device includes a light emitting element and a wireless tag. After the lighting system is installed, each lighting device transmits one or more packets that contain a constant tone extension (CTE). This CTE allows the locators to determine the angle of arrival of the incoming packet. By combining the angles of arrival from several locators, it is possible to ascertain the physical location of the lighting device that transmitted the CTE. In this way, the physical location of each lighting device can be correlated to its network address.

公开(公告)号：US20250007769A1

公开(公告)日：2025-01-02

申请号：US18217015

申请日：2023-06-30

Applicant: Silicon Laboratories Inc.

Inventor： Wentao Li ,  Yan Zhou ,  Terry Lee Dickey

IPC: H04L27/26 ,  H04L5/00 ,  H04L25/497

Abstract: A receiver includes a demodulator having a configurable correlator bank that helps with fast and robust signal detection. The demodulator detects arrival of a first preamble symbol using a first correlator bank configuration. The demodulator makes a course frequency offset estimation after detection of the first preamble signal and the receiver adjusts a frequency used by a mixer based on the coarse frequency offset estimation. The demodulator confirms signal arrival detection with detection of a second preamble symbol. A coarse timing estimation is generated using a second correlator bank configuration using a multi-symbol observation period. A fine frequency offset estimation is made using a third correlation bank configuration. A fine timing estimation is made using a fourth correlation bank configuration. The demodulator then despreads received symbols using a fifth correlator bank configuration.

公开(公告)号：US20250007643A1

公开(公告)日：2025-01-02

申请号：US18342975

申请日：2023-06-28

Applicant: Silicon Laboratories Inc.

Inventor： Fabrice Christophe Olivier Portier

IPC: H04L1/00

Abstract: In one embodiment, a transmitter includes: a circuit to generate a packet having a preamble, a header, and a data portion, where the preamble and the header are dynamically adaptable based at least in part on a range between the transmitter and a receiver; and a radio frequency (RF) front end circuit coupled to the circuit to process and transmit the packet.

公开(公告)号：US20250007630A1

公开(公告)日：2025-01-02

申请号：US18344116

申请日：2023-06-29

Applicant: Silicon Laboratories Inc.

Inventor： Sriram Mudulodu ,  Manoj Kumar Medam

IPC: H04B17/318 ,  H04L27/00

Abstract: In one embodiment, a receiver includes: an analog front end (AFE) circuit to receive and process an incoming radio frequency (RF) analog signal comprising a packet; an analog-to-digital converter (ADC) coupled to the AFE circuit to receive and digitize an analog signal based on the RF analog signal into a digital signal; a packet detector coupled to the ADC to detect the packet based on the digital signal; and a computation circuit coupled to the packet detector. The computation circuit may be configured to determine a received signal strength indicator (RSSI) value based at least in part on a portion of a preamble of the packet.