3a Logics Inc.

3a Logics Co., Ltd.

Chang Ho Ryu

Sung Wan Kim

Pyeong Han Lee

Sung Hun Chun

Kwang Beom Park

Disclosed is an NFC device not having a power button. The NFC device includes a battery including a voltage output terminal from which a battery voltage is output, an internal system including a voltage input terminal and using the battery voltage as an operating voltage, and an NFC tag circuit configured to connect the voltage output terminal of the battery and the voltage input terminal of the internal system in response to only a system power-on command included in a system power-on NFC signal that is transmitted by an external NFC device and to maintain the connection between the voltage output terminal of the battery and the voltage input terminal of the internal system in response to the battery voltage.

NFC device powered on in response to radio frequency signal, NFC tag circuit included therein, and method of operating the NFC device

Provided is a method of providing logistics information. A method of providing logistics information using a data logger equipped in a cold container for storing goods, a first portable reader, a second portable reader, and a server, including receiving, by the data logger, configuration information including a start time and a sensing period of the data logger, and threshold values of a gravitational acceleration and a rotation angle for the data logger from the first portable reader, starting, by the data logger, operation from the start time, comparing output values of a sensor of the data logger with the threshold values, and determining whether an abnormal state occurs in the data logger according to a result of the comparison, generating and transmitting to the server, by the data logger, normal log information at each of the sensing period when the abnormal state does not occur in the data logger, and generating and transmitting to the server, by the data logger, abnormal log information whenever the abnormal state occurs regardless of the sensing period.

Method of providing logistics information service using data logger for processing logistics-related information

Proposed is a dual band RFID tag including a first rectifier configured to receive and rectify a first RF signal modulated at a first frequency, a first regulator configured to regulate an output voltage of the first rectifier, a second rectifier configured to receive and rectify a second RF signal modulated at a second frequency, a second regulator configured to regulate an output voltage of the second rectifier, a voltage distributor connected to a first node and a ground in a state of being positioned therebetween, the output terminal of the first rectifier and the output terminal of the second rectifier being both connected to the first node, a multiplexer configured to output any one of an analog detection signal output from a sensor and an output signal of the voltage distributor, in response to a first selection signal or a second selection signal, and an analog-to-digital converter configured to receive as an operating voltage a voltage of a second node to which an output terminal of the first regulator and an output terminal of the second regulator are both connected and to convert an output voltage of the multiplexer into a digital signal.

Dual band RFID tag, and sensing data processing device having same

A near field communication (NFC) device includes a DC power supply configured to output a DC voltage, an NFC interface configured to generate a control signal in response to an NFC signal, and a voltage supply control circuit configured to supply the DC voltage to an electronic circuit in response to the control signal and maintain supply of the DC voltage to the electronic circuit in response to a voltage maintaining signal generated by the electronic circuit powered on by the DC voltage.

Electronic device powered on in response to radio frequency signal, near field communication tag circuit included therein, and operating method thereof

Provided is a data logger. A data logger includes a sensor configured to sense a change in a gravitational acceleration of the data logger and a change in a rotation angle of the data logger, and generate a sensing signal, a communication module configured to receive configuration information including a sensing period and threshold values of the data logger from a portable reader, and a microprocessor unit configured to receive the sensing signal from the sensor, receive the sensing period and the threshold values from the communication module, generate sensing values corresponding to the sensing signal, compare the sensing values with the threshold values, determine whether an abnormal state occurs in the data logger according to a result of the comparison, generate and transmit to a server normal log information at each of the sensing period when the abnormal state does not occur in the data logger, and generate and transmit to the server abnormal log information whenever the abnormal state occurs regardless of the sensing period.

Data logger for processing logistics-related information and cold container including the same

Disclosed is an NFC device without a power button. The NFC device includes a battery that outputs a battery voltage, an internal system that includes a voltage receiving terminal for receiving the battery voltage and a reset signal receiving terminal for receiving a reset signal, and maintains a reset state in response to the reset signal having a first state, and an NFC tag circuit that generates the reset signal having the first state, and generates the reset signal having a second state in response to only a system power on command included in a system power on NFC signal transmitted from an external near field communication (NFC) device, in which the internal system releases the reset state in response to the reset signal having the second state, and then, generates a reset release holding signal using the battery voltage, and transmits the generated reset release holding signal to the NFC tag circuit, and the NFC tag circuit generates the reset signal maintaining the second state according to the reset release holding signal.

Portable NFC device that releases reset in response to radio frequency signal, and NFC tag circuit included therein

Provided is a programmable light source output control device. A light source output control device includes electronic fuses, a power stage configured to receive external power, generate actuating power according to the external power and a state of each of the electronic fuses, and supply the actuating power to a light source, and a setting circuit configured to set the state of each of the electronic fuses.

Programmable light source output control device using electronic fuse, lighting device, and method of programming lighting device

An integrated circuit includes a bi-directional signal transmission pin connected to a sensing electrode of a salinity sensor, an RF interface which generates operating voltages on the basis of an RF signal received through an antenna, different types of driving signal generators having a structure in which each output terminal is connected to the pin, different types of analog-to-digital converters having a structure in which each input terminal is connected to the pin, and a microcontroller unit which generates a first control signal and a second control signal according to a type of the salinity sensor, in which one of the different types of driving signal generators is enabled based on the first control signal, one of the different types of analog-to-digital converters is enabled based on the second control signal, and the operating voltages are supplied to an enabled signal generator and an enabled analog-to-digital converter.

IC and sensor for measuring salinity and method for measuring salinity using the sensor

An integrated circuit is disclosed. The integrated circuit includes a UHF RFID tag physical layer that rectifies a UHF RFID signal acquired through a first antenna using a first rectifier to generate a first DC voltage, an NFC tag physical layer that rectifies an NFC signal acquired through a second antenna to generate a second DC voltage, a microcontroller unit, a non-volatile memory that stores data processed and data to be processed by the UHF RFID tag physical layer, and data processed and data to be processed by the NFC tag physical layer under control of the microcontroller unit, and a detector that detects a voltage input of one of the first DC voltage and the second DC voltage, and supplies the detected DC voltage to one of the UHF RFID tag physical layer and the NFC tag physical layer, the microcontroller unit, and the non-volatile memory.

Growing community of inventors

Seongnam-si, South Korea

Chang Ho Ryu