Integrant Technologies Inc.

Naver Corporation

Youngjin Kim

Kwyro Lee

Moweon Lee

Bonkee Kim

Sunguk Kim

Yongseok Kim

Method and apparatus for analyzing an online behavior of a user accessing a web server include: collecting, when a user terminal accesses a web server and forms a session, log data corresponding to a behavior performed by the user terminal in the session in real time; detecting log data corresponding to a trigger log among the log data; extracting, when the trigger log is detected, log data cumulated up to a detection time point of the trigger log from a start time point of the session and generating cumulative log data; and performing pattern analysis on the cumulative log data and generating behavior information corresponding to the behavior of the user terminal.

Apparatus for analysing online user behavior and method for the same

A user tracking method includes collecting cookies in a log according to a user action on the Internet and collecting chain information by Internet communication as third information different from the cookie, and grouping cookies based on the chain information.

Method, system, and non-transitory computer readable recording medium for precise user tracking

A mixer circuit with improving characteristic of image rejection by compensating mismatch in a spurious rejection mixer circuit (SRM) used in a transmitter is provided. The mixer circuit according to the present invention comprises an up conversion unit for modulating a base-band input signal to a RF signal, a down conversion unit for converting an output signal from the up conversion unit to a base-band output signal, mismatch estimating means for determining a mismatch compensation value by which spurious component in an output signal from the down conversion unit is minimized, wherein the spurious component results from mismatch in the up conversion unit, and mismatch compensating means for compensating the mismatch in the up conversion unit by using the mismatch compensation value determined by the mismatch estimating means.

Mixer circuit with spurious rejection by using mismatch compensation

The present invention relates to improvement of even order distortion noise, DC offset, and non-linearity of mixer circuits. According to the present invention, a mixer circuit is provided, which comprises a splitter for splitting an input signal to the first and second signal having phase difference of 180 degree, a local oscillator, first mixer for mixing the first signal with the local oscillation signal, second mixer for mixing the second signal with the local oscillation signal, and subtractor for subtracting the output of the second mixer from the output of the first mixer.

Mixer circuit having improved even order noise, DC offset, and linearity characteristic

An image rejection mixer (IRM) for rejecting signals having image frequency and, more particularly, a mixer for rejecting signals of image frequency by using mismatch compensation is provided. The image rejection mixer comprises: first and second mixers; first and second converting means, each of which transforms each output of the first and second mixers to digital signal; third and fourth mixers, each of which mixes output of the first converting means with each of second local oscillation in-phase signal and quadrature-phase signal, respectively; fifth and sixth mixers, each of which mixes output of the second converting means with each of second local oscillation in-phase signal and quadrature-phase signal, respectively; means for subtracting; means for adding; and means for compensating gain-mismatch between the first and second mixers.

Growing community of inventors

Seongnam-si, South Korea

Youngjin Kim