公开(公告)号：US20230410564A1

公开(公告)日：2023-12-21

申请号：US17826698

申请日：2022-05-27

Applicant: CalAmp Corp.

Inventor： Robert Bradshaw

IPC: G07C5/00 ,  H04W4/40 ,  H04W4/02

CPC classification number: G07C5/008 ,  H04W4/025 ,  H04W4/40

Abstract: Technologies for switching between communication modes in a telematics device includes a communication subsystem having a communication processor electrically coupled to a location antenna to receive location data form a location beacon system and a data antenna to communication with a remote computer system(s). The communication processor may have multiple modes of operation including a location mode in which the communication processor is configured to receive and process location data from the location beacon system and a data mode in which the communication processor is configured to transmit and receive data communications from the remote computer system(s). The communication subsystem may control the operating mode of the communication processor by switching the communication processor between the location mode and the data mode according to a determined switching duty cycle.

公开(公告)号：US11631284B2

公开(公告)日：2023-04-18

申请号：US16748147

申请日：2020-01-21

Applicant: CalAmp Corp.

Inventor： Peter Hergesheimer ,  Steve Burrington

IPC: G07C5/00 ,  G01C21/12 ,  H04W4/44

Abstract: Embodiments of the invention include a vehicle telematics system including telematics a telematics device, where the telematics device includes a modem that communicates using several communication modes, and the processor of the telematics device is directed to operate in the communication mode, transmit a notification to the cellular data server regarding a switch to a different communication mode, switch to the navigation mode and obtain location data for a first time, switch back to the communication mode, extrapolate a new location for a second time while in the communication mode based on an analysis of the location data received during the navigation mode.

公开(公告)号：US11436002B2

公开(公告)日：2022-09-06

申请号：US16826703

申请日：2020-03-23

Applicant: CalAmp Corp.

Inventor： Russell Cook ,  Somasundaram Ramiah

IPC: G06F8/654 ,  G06F9/4401 ,  G06F16/23 ,  G06F8/61

Abstract: Systems and methods for failsafe firmware upgrades in accordance with embodiments of the invention are disclosed. One embodiment includes a vehicle telematics device, including: a processor; and a firmware memory comprising a firmware image coupled to the processor, wherein the firmware image further comprise a first segment and a second segment; wherein a primary bootloader application located in the firmware image: verifies the integrity of the first segment; verifies the integrity of the second segment; selects a firmware image contained in the firmware memory using a failsafe process; and—boots the vehicle telematics device using the selected firmware image.

公开(公告)号：US20220210240A1

公开(公告)日：2022-06-30

申请号：US17698318

申请日：2022-03-18

Applicant: CalAmp Corp.

Inventor： Santhosh Srinivasulu

IPC: H04L67/565 ,  G07C5/00 ,  H04L67/12 ,  H04L69/40 ,  H04W4/44

Abstract: Systems and methods for dynamic telematics messaging in accordance with embodiments of the invention are disclosed. One embodiment includes a dynamic telematics messaging system includes at least one vehicle telematics device, and a dynamic telematics messaging server system including, at least one processor, and a memory containing a messaging application, wherein the messaging application directs the at least one processor to, obtain a first message data from the at least one vehicle telematics device encoded in a first message format, transcode the first message data into a second message format, process the transcoded message data, and provide the transcoded message data.

公开(公告)号：US20210265833A1

公开(公告)日：2021-08-26

申请号：US17153434

申请日：2021-01-20

Applicant: CalAmp Corp.

Inventor： Justin Flor ,  Russell Cook

IPC: H02H7/18 ,  B60R16/033 ,  H02H3/24

Abstract: Embodiments of the invention include an under-voltage lockout (UVLO) circuit with automatic UVLO threshold configuration. In an embodiment, the UVLO circuit includes an over-voltage protection circuit that receives power from a power source, a peak detector that detects a peak voltage output for the external power source, a voltage threshold generator that sets a UVLO threshold based on the peak voltage output, and a comparator that compares an instantaneous voltage with the UVLO threshold and configures an operating mode of a device based on the comparison.

公开(公告)号：US20210221312A1

公开(公告)日：2021-07-22

申请号：US16748162

申请日：2020-01-21

Applicant: CalAmp Corp.

Inventor： Jeff Jenkins ,  Peter Hergesheimer

IPC: B60R21/0132 ,  G01P1/07 ,  B60R21/017 ,  G07C5/08

Abstract: Embodiments of the invention include a vehicle telematics system including a telematics device, wherein the telematics device detects, using a processor of a telematics device, a vehicle ignition off event and reconfigures at least one parameter of an accelerometer for a low power mode of operation while in the vehicle ignition off state, and places the telematics device in a sleep mode of operation, wherein an accelerometer generates an interrupt to wake the processor of the telematics device from the sleep mode of operation upon detecting an acceleration event that exceeds a threshold, and the processor of the telematics device analyzes the accelerometer data stored in a FIFO buffer of the accelerometer.

公开(公告)号：US11070077B2

公开(公告)日：2021-07-20

申请号：US16132165

申请日：2018-09-14

Applicant: CALAMP CORP.

Inventor： Russell Cook ,  Justin Flor

IPC: H02J9/06 ,  H02J9/00 ,  H03K3/037 ,  G06F1/3287 ,  G05B19/042 ,  H03K19/20

Abstract: In one embodiment, a vehicle telematics device is disclosed with a hibernate control circuit. The hibernate control circuit can selective switch battery power on and off to hibernatable circuits. The hibernate control circuit can be responsive to external main power availability, battery charge condition, and a periodic low frequency clock in the generation of a battery switch enable signal. A power supply switch can be selectively controlled by the battery switch enable signal to switch battery power on and off to the hibernatable circuits.

公开(公告)号：US11021166B2

公开(公告)日：2021-06-01

申请号：US16551453

申请日：2019-08-26

Applicant: CalAmp Corp.

Inventor： Amrit Rau

IPC: B60W40/09 ,  G06N20/00 ,  B60W40/12 ,  H04W4/44

Abstract: Systems and methods for using machine learning classifiers to identify anomalous driving behavior in vehicle driver data obtained from vehicle telematics devices are provided. In one example, a vehicle telematics device receives vehicle driver data from sensors, identifies anomalies in the vehicle driver data by using an unsupervised machine learning process, calculates a driver risk score by using the anomalies identified in the vehicle driver data, and transmits the risk score to a remote server system. In another example, a server system receives vehicle driver data from a plurality of vehicle telematics devices, identifies anomalies in the vehicle driver data by using an unsupervised machine learning process, and calculates a driver risk score by using the anomalies identified in the vehicle driver data.

公开(公告)号：US20200278386A1

公开(公告)日：2020-09-03

申请号：US16289320

申请日：2019-02-28

Applicant: CalAmp Corp.

Inventor： David B. Patton

IPC: G01R31/00 ,  G07C5/00 ,  B60R16/023

Abstract: Systems and methods for determining vehicle operational status in accordance with embodiments of the invention are disclosed. In one embodiment, a vehicle event detection device includes a low pass filter configured to sense a vehicle voltage and filter the sensed voltage to remove noise, and a plurality of first high pass filter configured to detect either a drop or a rise in the vehicle voltage and several low power comparators configured to determine whether the drop or rise in voltage is indicative of a vehicle event.

公开(公告)号：US10599421B2

公开(公告)日：2020-03-24

申请号：US15833350

申请日：2017-12-06

Applicant: CalAmp Corp.

Inventor： Russell Cook ,  Somasundaram Ramiah

IPC: G06F8/654 ,  G06F9/4401 ,  G06F16/23 ,  G06F8/61

Abstract: Systems and methods for failsafe firmware upgrades in accordance with embodiments of the invention are disclosed. One embodiment includes a vehicle telematics device, including: a processor; and a firmware memory comprising a firmware image coupled to the processor, wherein the firmware image further comprise a first segment and a second segment; wherein a primary bootloader application located in the firmware image: verifies the integrity of the first segment; verifies the integrity of the second segment; selects a firmware image contained in the firmware memory using a failsafe process; and boots the vehicle telematics device using the selected firmware image.