Abstract:
PURPOSE: A multi-tone transceiver system is provided to be able to use TEQ(Time-domain Equalizer) efficiently according to characteristic of each band by using VDSL transceiver system on DMT base. CONSTITUTION: The first buffer unit outputs with dividing into each sub-band after storing temporary transmission band of signal coded sequentially . A DMT modulation part outputs signals modulating each sub-band signal from the first buffer unit into multi-carrier. The second buffer unit stores temporary the real number of signal of each sub-band modulated into the multi-carrier. A composition bank of CMFB(520) trans-multiplexor transmits signals from the second buffer unit to frequency division multiplexor channel. A decomposition bank of CMFB(540) trans-multiplexor separates the frequency division multiplexor signal transmitted from the channel into each frequency and divides into the each sub-band signal. The third buffer unit divides the real numbers into the each sub-band after storing temporary the real number of signal divided into each sub-band and outputs the real numbers sequentially. The firth buffer unit outputs original signals of the whole transmission band after storing temporary modulated signal for each the sub-band.
Abstract:
The present invention provides an apparatus and a method for personal identification for performing a user identification or authentication on a TV or a set-top box (STB) required when providing a personalized service on a TV. The personal identification apparatus according to the present invention includes a remote control unit and a personal identification unit. The remote control unit includes a normal key and a special key, and receives a user authentication request, an identifier and a password through the normal key and the special key and delivers the user authentication request, the identifier and the password to the personal identification unit. The personal identification unit provides a user authentication interface screen based on the received user authentication request, determines whether to register the user is registered or not based on the received identifier and the password, and provides personalized service if the user is registered.