Abstract: An apparatus and battery system for estimating insulation resistance including an insulation resistance measurement circuit connected to a first electrode of a battery, a first switch connected to the first resistor, a second resistor connected to the first switch, a third resistor connected to the second resistor and a second electrode of the battery, and a second switch connected between a first contact point between the first switch and the second resistor and a chassis ground, a voltage measurement part measuring a voltage of a second contact point between the second resistor and the third resistor, and a controller controlling the first and second switches and calculating an insulation resistance value based on the voltage measured at the second contact point the first and second switches are ON, and the voltage measured at the second contact point while the first switch is OFF and the second switch is ON.

Abstract: An apparatus and battery system for estimating insulation resistance including an insulation resistance measurement circuit connected to a first electrode of a battery, a first switch connected to the first resistor, a second resistor connected to the first switch, a third resistor connected to the second resistor and a second electrode of the battery, and a second switch connected between a first contact point between the first switch and the second resistor and a chassis ground, a voltage measurement part measuring a voltage of a second contact point between the second resistor and the third resistor, and a controller controlling the first and second switches and calculating an insulation resistance value based on the voltage measured at the second contact point the first and second switches are ON, and the voltage measured at the second contact point while the first switch is OFF and the second switch is ON.

Abstract: A multimedia mobile communication system and method capable of updating functions of a multimedia mobile communication terminal is provided, wherein the system and method may add to or modify the functions by modifying a software program. The multimedia mobile communication system and method comprises an intermediate frequency processing unit for correcting an error of an intermediate frequency signal through a convolution coding method or a turbo coding method, downloading a software program and allocating, setting, modifying and upgrading specific functions corresponding to the downloaded software program.

Abstract: A mobile communication terminal comprising a first unit comprising a circuit; a second unit comprising a rotating camera module; and a flexible printed circuit board connecting said circuit to said rotating camera module. The rotating camera module comprising a first peg forming a first turning point for said flexible circuit board to wind around in a first direction, wherein a wound path of said flexible circuit board around said first turning point virtually divides said flexible circuit board into a first region and a second region, said first region being defined by a first portion of said flexible circuit board extending from a connection point to said rotating camera module to said first peg, said second region being defined by a second portion of said flexible circuit board extending from said first peg to an area above said connection point.

Abstract: A mode switching method in a mobile communication system is provided. The method comprises providing a mode switching start point between an uplink signal and a downlink signal of a transceiver; resetting the mode switching start point based on length of a guard period provided between the uplink signal and the downlink signal; and starting mode switching at the mode switching start point.

Abstract: The automatic control system of a mobile terminal for time division duplex (TDD) based communication system includes an RF processing module which controls quality of a transmission channel, and a baseband modem connected to the RF processing module through a transmission data line and a reception data line. The baseband modem generates automatic control signals based on control information received from a base station and transmitting the automatic control signal to the RF processing module through the transmission data line in a reception mode of the mobile terminal. The automatic control signals are transmitted to the RF processing module through the transmission data line, which is in the idle state, in the reception mode. Additional control lines are not required to transmit the respective automatic control signals. Therefore, utilization of the transmit data line between the baseband modem and the RF processing module can be improved.

Abstract: A method for controlling an output power of a plurality of handheld terminals in a mobile communication system, includes: generating a TPC coding value according to transmit output characteristics of each handheld terminal; setting an uplink Eb/No reference value with respect to each handheld terminal and comparing the Eb/No reference value with the respective TPC coding value; selecting an optimum power control command value and transmitting the selected power control command value to the handheld terminal; and adjusting a transmit power level of the handheld terminal based on the TPC coding value and the selected power control command value.

Abstract: A mobile communication terminal for supporting a plurality of communication protocols comprises a first software module for managing at least a first operation associated with at least one of the plurality of communication protocols, wherein the first operation is independent of other operations performed by remaining plurality of the communication protocols; and a second hardware module for managing at least a second operation common to at least two of the plurality of communication protocols.

Abstract: A transceiver of a terminal for use in a TDD-based mobile communication system is provided. The transceiver comprises a receiver for processing a reception signal in a reception mode; a transmitter for processing a transmission signal in a transmission mode; a switching mechanism operable in the transmission mode and the reception mode; and a ground divider for dividing grounds for the receiver, the transmitter, and the switching mechanism.

Abstract: A mobile communication terminal comprising a first unit comprising a circuit; a second unit comprising a rotating camera module; and a flexible printed circuit board connecting said circuit to said rotating camera module. The rotating camera module comprising a first peg forming a first turning point for said flexible circuit board to wind around in a first direction, wherein a wound path of said flexible circuit board around said first turning point virtually divides said flexible circuit board into a first region and a second region, said first region being defined by a first portion of said flexible circuit board extending from a connection point to said rotating camera module to said first peg, said second region being defined by a second portion of said flexible circuit board extending from said first peg to an area above said connection point.

Abstract: A handheld mobile communication device operable in a mobile communication network for communicating multimedia data is provided. In accordance with a preferred embodiment, the mobile communication device comprises a display screen positioned on a first surface of the mobile communication device in a first orientation for viewing by a user; and an orientation adjusting mechanism for allowing a user to change a viewing orientation of the display screen from the first orientation to a second orientation.

Abstract: A multimedia mobile communication system and method capable of updating functions of a multimedia mobile communication terminal is provided, wherein the system and method may add to or modify the functions by modifying a software program. The multimedia mobile communication system and method comprises an intermediate frequency processing unit for correcting an error of an intermediate frequency signal through a convolution coding method or a turbo coding method, downloading a software program and allocating, setting, modifying and upgrading specific functions corresponding to the downloaded software program.

Abstract: A mobile communication terminal for supporting a plurality of communication protocols comprises a first software module for managing at least a first operation associated with at least one of the plurality of communication protocols, wherein the first operation is independent of other operations performed by remaining plurality of the communication protocols; and a second hardware module for managing at least a second operation common to at least two of the plurality of communication protocols.

Abstract: An apparatus and method for removing a DC offset from a transmission signal generated by a mobile terminal is provided. The invention comprises feeding back at least a first portion of a transmission signal from a transmission module of the mobile terminal to a reception module of the mobile terminal; determining DC offset information of the transmission signal in the reception module; providing the DC offset information from the reception module to the transmission module; and removing the DC offset from the transmission signal based on the DC offset information provided to the transmission module.

Abstract: A method for controlling an output power of a plurality of handheld terminals in a mobile communication system, includes: generating a TPC coding value according to transmit output characteristics of each handheld terminal; setting an uplink Eb/No reference value with respect to each handheld terminal and comparing the Eb/No reference value with the respective TPC coding value; selecting an optimum power control command value and transmitting the selected power control command value to the handheld terminal; and adjusting a transmit power level of the handheld terminal based on the TPC coding value and the selected power control command value.

Abstract: The automatic control system of a mobile terminal for time division duplex (TDD) based communication system includes an RF processing module which controls quality of a transmission channel, and a baseband modem connected to the RF processing module through a transmission data line and a reception data line. The baseband modem generates automatic control signals based on control information received from a base station and transmitting the automatic control signal to the RF processing module through the transmission data line in a reception mode of the mobile terminal. The automatic control signals are transmitted to the RF processing module through the transmission data line, which is in the idle state, in the reception mode. Additional control lines are not required to transmit the respective automatic control signals. Therefore, utilization of the transmit data line between the baseband modem and the RF processing module can be improved.

Abstract: A mode switching method in a mobile communication system is provided. The method comprises providing a mode switching start point between an uplink signal and a downlink signal of a transceiver; resetting the mode switching start point based on length of a guard period provided between the uplink signal and the downlink signal; and starting mode switching at the mode switching start point.

Abstract: A transceiver of a terminal for use in a TDD-based mobile communication system is provided. The transceiver comprises a receiver for processing a reception signal in a reception mode; a transmitter for processing a transmission signal in a transmission mode; a switching mechanism operable in the transmission mode and the reception mode; and a ground divider for dividing grounds for the receiver, the transmitter, and the switching mechanism.