baber/WOPTO huggingface dataset:
Patent KR-20000028144-A (KR)
Title: Method for managing menus on tv
Inventor: LEE HYUN CHEOL
IPC: H04N5/44
Filed: 1998-10-30
Abstract: PURPOSE: A method for managing menus on TV is provided arbitrary change values for adjusting screen quality and sound quality, and to use changed data as a label. CONSTITUTION: A method for managing menus on TV comprises the steps of: deciding whether a sound quality setup mode or a screen quality setup mode is selected, and outputting a menu to an OSD(On Screen Display) screen; deciding whether a label of the sound quality/screen quality to be set up is given; deciding whether data of the sound quality/screen quality is set up; storing the set label and data; deciding whether the setup of the sound quality/screen quality is completed; displaying a list as the OSD by referring to the changed label and the data, after deciding a list displaying request.
Patent KR-20000028386-A (KR)
Title: Harmonics reduced circuit of vacuum cleaner
Inventor: AN CHI HYUNG
IPC: A47L9/28
Filed: 1998-10-31
Abstract: PURPOSE: A circuit of vacuum cleaner is provided which can be reduced harmonics according to the controlling of phase angle by driving a triac. CONSTITUTION: A circuit of vacuum is controlled a motor output of vacuum cleaner by controlling phase angle of a triac. comprises a trans(TT) having output tab for low 100V and high 230V in the secondary side; a pair of triac(5-1, 5-2) controlling the following that the motor is drives at 100V and 230V by a gate connected in the output tab of trans(TT) and a controller for detecting phase(10) controlling the following that the gate of triac(5-1, 5-2) applied with 100V is selected when the motor output is 1300W or more.
Patent KR-20000031161-A (KR)
Title: Method of controlling drive of package air conditioner on sleeping
Inventor: SHIN KYEONG CHEOL
IPC: F24F1/00
Filed: 1998-11-04
Abstract: PURPOSE: A method of controlling drive of package air conditioner on sleeping is provided to make a cooling environment pleasant and safe for the health even when a user sleeps by providing a drive mode corresponding to the sleeping of a user to the drive function of an air conditioner. CONSTITUTION: A method of controlling drive of package air conditioner on sleeping comprises the step of: deciding if an initial flag is set up when selecting a sleep drive mode; deciding if the indoor temperature is higher than the control temperature for the adjustment of a compressor of an outdoor unit, deciding if a counter is counted as much as a set up value and setting a following flag after clearing the initial flag if the counter is the set up value and closing after initializing the counter by zero.
Patent KR-19990014470-A (KR)
Title: 고수명 자동차 엔진오일
Filed: 1998-11-13
Abstract: 본 발명은 엔진오일의 요구성능을 보다 향상시키며 특히 내마모성, 산화안정성 및 극압성능을 개선하고 점성과 탄성을 동시에 가져 초기 시동시 엔진마모를 방지하는 새로운 첨가제를 배합하여 장시간 사용이 가능한 고수명 자동차 엔진오일에 관한 것이다. 본 발명은, API 서비스 등급 중 가솔린의 SJ급 및/또는 디젤의 CG-4급을 만족시키는 화학첨가제와 기유가 혼합된 오일 약 90중량%와, 내마모성 방지를 위한 몰리브덴디티오카바메이트(MoDTC) 0.1 내지 0.5중량%와, 상기 몰리브덴디티오카바메이트를 엔진오일중에 부유되도록 하고 엔진오일이 점성과 탄성을 가지도록 하는 화합물로서, 올레핀 코폴리머  3 내지 8중량%와, 유기용매 0.1 내지 1%와, 폴리이소부틸렌 0.1 내지 1% 그리고 광유 1 내지 3%로 이루어진 첨가제로 구성되는 엔진오일을 제공하는 것이다.그리고, 상기 첨가제에는, API서비스요건을 만족하는 2 내지 5중량%의 점도지수 향상제와, 0.1 내지 1중량%의 유동점강하제가 더 포함되도록 할 수도 있다. 
     따라서 상기 몰리브덴디티오카바메이트(MoDTC)와 첨가제에 의해 내마성과 산화안정성이 우수하고, 점성과 탄성을 가진 엔진오일의 제작이 가능하여 고수명으로 사용가능한 잇점이 있다.
Patent KR-20000033003-A (KR)
Title: Preparation method of health drink with yellow pumpkin
Inventor: KIM OAK OEAN
IPC: A23L25/10
Filed: 1998-11-16
Abstract: PURPOSE: A preparation method for healthy pulp drink or jam with yellow pumpkin is provided to satisfy various individual taste to be popularized the inside and outside of country. CONSTITUTION: A preparation method for healthy fruit drink or jam comprises: (1)removing cover and contents of pumpkin: (2)blanching and refining pulpy substance to make source of yellow pumpkin: (3)making sticky jam for mixing oligosaccharides, sugar, salt, water with 70-80wt% source of yellow pumpkin.
Patent KR-20000033281-A (KR)
Title: Apparatus for mixing oil with water to burn
Inventor: EUN HEE CHEOL
IPC: F23D11/20
Filed: 1998-11-21
Abstract: PURPOSE: An apparatus for mixing oil with water to burn is provided to enhance thermal efficiency by saving fuel through a stabilized mixer and to reduce exhaust gas caused by incomplete combustion. CONSTITUTION: Fuel and water is supplied to a flow measurer(3) when a control unit(13) operates. A fuel pressure sensor(31) and a water pressure sensor(32) detects each pressure in detail. Then, the control unit controls a fuel feed valve(41) and a water feed valve(42) with the obtained values and sends the proper amount of fuel and water to a primary oil/water-mixing vaporizer(5). The mixed gas is jetted as a mixer flows only in a direction of a combustion chamber(71). The mixed gas is influenced by a HVT(high voltage transformer,10) to be ignited. When the mixed gas is ignited firstly, a second oil/water-mixing vaporizer(11) is heated at a proper temperature. Also, a primary feed line is interrupted and a secondary line of a three-way valve(4) is opened so that the fuel and water is supplied to the secondary oil/water-mixing vaporizer. The mixed gas is jetted through a nozzle(7) and ignited after the fuel and water is vaporized and mixed in the secondary vaporizer. A primary check valve(6) prevents the fuel and water from flowing backward the primary feed line.
Patent KR-20000033393-A (KR)
Title: System for preventing print error and method thereof
Inventor: AN JONG RIN
IPC: B41J29/00
Filed: 1998-11-23
Abstract: PURPOSE: A method for preventing print error is provided to immediately stop printing when an image to output is not in concord with a host image by comparing a certain part of the image to output with a host image. CONSTITUTION: A method for preventing print error includes a first steps of storing sample data for checking print errors and transmitting the position data of the sample data and PDL(page description language) stream of a document to print to a printer, a second step of receiving the PDL stream and forming an image thereof to extract a sample data with reference to the position information, a third step of transmitting the extracted sample data to a host after encoding, a fourth step of decoding the received sample data, and a fifth step of comparing the data decoded in the fourth step with the sample data stored in the first step and determining whether or not to print the image formed in the second step according to the comparison result.
Patent KR-20000033840-A (KR)
Title: Fabricating method for liquid crystal display
Inventor: SIM JEONG UK
IPC: G02F1/136
Filed: 1998-11-26
Abstract: PURPOSE: A fabricating method for a liquid crystal display is to improve its reliability by increasing reliability of a pad part and solving an erosion problem of bottom film. CONSTITUTION: After a gage pad(110) and a common electrode(130) having a double film structure of a chromium film(101)/aluminum-neodymium film(102) is formed on an insulation substrate(1), a gate insulation film(2) is deposited thereon. Then, an auxiliary data line(200) is formed by depositing and etching a metal for interconnecting first data. Next, an interlayer insulation film(3), an amorphous silicon film and a doped amorphous silicon film are deposited thereon, these films being continuously etched to form a semiconductor activation pattern(300) on the gate insulation film. A contact hole(C3) is formed on the three layers to expose a part of the auxiliary data line. A source and drain electrode, a data line and a data pad are formed by depositing and etching a metal for interconnecting second data. The contact hole is formed to expose the chromium film of the gate pad and the data pad by depositing and etching a protect film on a front surface.
Patent KR-20000033933-A (KR)
Title: Electronic mail service method using electronic stamp
Inventor: HWANG SEONG WOON
IPC: H04L9/32
Filed: 1998-11-26
Abstract: PURPOSE: An electronic mail service method using an electronic stamp is provided to send electronic mails, by receiving and authenticating hidden electronic stamps issued from an electronic stamp issue device. CONSTITUTION: A user device selects a parameter randomly, generates a hidden electronic stamp candidate T', and transmits it to an electronic stamp issue device(201). The electronic stamp issue device signs the hidden electronic stamp candidate T', and issues a hidden electronic stamp candidate T" to the user device(202). The user device receives a hidden electronic stamp from the electronic stamp issue device, removes the hidden from the hidden electronic stamp, and restores the electronic stamp(203).
Patent KR-19990062959-A (KR)
Title: 반도체 플라스틱 패키지 및 그 제조방법
IPC: H05K1/05
Filed: 1998-12-10
Abstract: 본 발명에 의해 열 분산성이 우수하며 수분을 흡수하지 않는 반도체 플라스틱 패키지가 제공되며, 이는 반도체 칩이 인쇄회로 기판의 일표면상에 고정되고, 반도체 회로 도체가 인쇄회로 기판 표면상에 형성된 신호 전달 회로 도체에 그 부분에서의 와이어-본딩에 의해 연결되고, 최소한 상기 인쇄회로 기판상의 신호 전달 회로 도체는 인쇄회로기판의 다른 표면상에 형성된 신호전달 회로도체 혹은 관통-홀 도체를 갖는 솔더볼의 연결 도체패드에 연결되며 상기 반도체 칩은 수지로 캡슐화되며, 상기 인쇄 회로 기판은 인쇄회로기판의 거의 중심에 두께 방향으로 인쇄회로 기판과 크기가 거의 같은 금속시이트를 갖으며, 상기 금속 시이트는 열-저항성 수지 조성물에 의해 전면 및 후면 회로 도체로부터 절연되고, 금속 플레이트에는 최소 2 관통-홀 각각의 직경보다 큰 직경을 갖는 틈새-홀이 제공되며, 상기 관통홀은 틈새홀에 제공되며, 상기 관통홀 및 관통홀들은 수지 조성물로 금속 시이트로부터 절연되며, 최소 하나의 관통홀은 금속 시이트에 연결되며, 금속 시이트의 일면에는 반도체 칩과 크기가 같은 최소 하나의 돌출부가 제공되며, 표면에 노출되는, 상기 반도체 칩은 상기 돌출부에 고정되도록 구조된다.
Patent KR-20000039154-A (KR)
Title: Fabrication method of semiconductor memory device
Inventor: KWON YEONG WOO
IPC: H01L27/04
Filed: 1998-12-11
Abstract: PURPOSE: A method for fabricating a semiconductor memory device is provided to secure a process margin in a photo-etching process. CONSTITUTION: An amorphous silicon layer(22) and a dielectric layer(23) are successively deposited on a substrate(21) having trenches therein, and polysilicon grains(24) are then supplied on the dielectric layer(23). Subsequently, a polysilicon layer(25) fills the trenches, and a polishing process is performed to expose the substrate(21). Next, a silicon layer(26) is grown on the substrate(21) and then partly changed into an insulating layer(27) by a selective implantation of oxygen ions. Next, a gate oxide, a polysilicon and a nitride are successively deposited and patterned to form gates on the silicon layer(26) and the insulating layer(27). Then a common source(28) and drains(29) are partly formed in the silicon layer(26) by implantation of impurities. Next, polysilicon plugs(30) connected with the source(28) and drains(29) are formed between the gates, and an insulating layer(31), a bit line(32) and drain electrodes(33) are formed. Since a capacitor is formed as stack of layers(22,23,24,25) within the trench, a gap between memory cell area and peripheral circuits is reduced and thereby a process margin is secured.
Patent KR-20000042731-A (KR)
Title: Channel switching apparatus based on voice recognition of television
Inventor: KIM HAN JAE
IPC: G10L15/00
Filed: 1998-12-26
Abstract: PURPOSE: A channel switching apparatus is provided to prevent a television failure due to key manipulations in advance by switching channels in case that a voice is recognized after comparing the channel voice of a particular viewer. CONSTITUTION: A remote microphone(20) extracts and stores characteristic parameters of a voice of viewer's channel after the viewer turns on a voice storage, recognizes a voice through the comparison of the stored characteristic parameters of the channel voice and characteristic parameters extracted from a channel voice inputted when the viewer turns off the voice storage. A receiver(18) converts a channel signal from a signal oscillator(29) into an electric code signal. A controller(19) controls a tuner(2) according to the electric code signal from the receiver(18).
Patent KR-20000044684-A (KR)
Title: Programming device of nonvolatile memory
Inventor: LEE SEUNG HO
IPC: G11C16/00
Filed: 1998-12-30
Abstract: PURPOSE: A programming device of nonvolatile memory is provided to reduce a programming time. CONSTITUTION: A programming device of nonvolatile memory contains a decoder(10) decoding address, plural address registers(30), plural data registers(40), and a pipeline control unit(20). The address registers temporarily store decoded address from the decoder according to a first enable signal. Herein, the address in the address register maintains the value until completing programming of corresponding word. The data registers temporarily store data inputted according to a second enable signal. The pipeline control unit outputs the enable signals for controlling the address and the data registers. Thus, the pipeline control unit operates programming for memory cell arrays(50) in a pipeline method.
Patent KR-20000044939-A (KR)
Title: Split gate flash eeprom cell
Inventor: AHN JAE CHUN
IPC: H01L27/115
Filed: 1998-12-30
Abstract: PURPOSE: A split gate flash EEPROM is provided to reduce the resistance of a select gate, thereby improving sensing speed due to RC delay in the select gate. CONSTITUTION: A split gate flash EEPROM comprises plural device division areas(21), a floating gate(22), a control gate(23), source/drain areas(24) and select gates(25). The device division areas(21) are formed on a selected portion of a substrate in order not to connect active areas in boundary between sectors. The floating gate(22) is formed on overall structure instead of a portion of the device division areas. The control gate(23) has a curved shape on a portion which the floating gate isn't formed on and a linear shape on the active areas. The source/drain areas(24) are partially overlapped on the device division areas. The select gates(25) are partially overlapped on a portion of the device division areas which the floating gate isn't formed on.
Patent KR-19990077141-A (KR)
Title: 칫솔
IPC: A46B7/02
Filed: 1996-12-24
Abstract: 본 발명은 목 부분에, 플라스틱 물질에 결합되는 탄성중합체 물질의 덩어리에 의해 측면이 둘러싸여 있는 일체적인 가늘어진 부분이 있는 칫솔에 관한 것이며, 여기서 덩어리는 가늘어진 부분이 연결되는 목 또는 헤드의 길이방향으로 인접한 부분의 표면 라인을 넘어 측방향으로 불룩 솟아 있는 형태를 갖는다.  가늘어진 부분 및 불룩 솟아 있는 덩어리는 칫솔에 개선된 가요성을 제공한다.
Patent KR-19990087760-A (KR)
Title: 휴대용 송수신기용 이중 안테나 장치
IPC: H01Q1/24
Filed: 1997-03-14
Abstract: 휴대용 송수신기의 안테나 장치가 해당 송수신기상에 장착되고 그 회로망에 의해 구동되도록 연결된 인쇄회로 안테나를 포함하는 형태로 공개된다. 상기 송수신기에는 연장가능형 모노폴 안테나가 또한 장착되어 있는 바, 해당 모노폴 안테나는 그 연장위치에 있어서는 상기 인쇄회로 안테나와 전기적으로 연결되고, 후퇴위치에 있어서는 인쇄회로 안테나로부터 전기적으로 분리되게 되어 있다. 인쇄회로 안테나에는 커넥터의 제1선단이 고정적으로 부착되는 한편, 모노폴 안테나에는 그 제2선단이 상기 연장위치 및 후퇴위치 사이를 활주하는 동안 해당 모노폴 안테와의 접촉을 유지하게 된다. 상기 모노폴 안테나는 연장위치하에서 상기 커넥터에 접촉하게 되는 전도부, 및 후퇴위치하에서 상기 커넥터에 접촉하게 되는 비전도부를 포함한다. 상기 모노폴 안테나 위치감지를 위한 별도 회로를 갖출 수도 있는 바, 해당 회로는 송수신기로 하여금, 상기 모노폴 연장위치에 있어 최대 동력상태로 전송케 하고, 모노폴 후퇴위치에 있어서는 감소된 동력으로 전송케 한다.
Patent KR-20000065163-A (KR)
Title: 혈전성질환의치료를위한피롤리딘,피페리딘및헥사하이드로아제핀의카르복사미드유도체
IPC: C07D211/00
Filed: 1997-04-29
Abstract: 본 발명은 하기 일반식 (I) 의 피롤리딘, 피페리딘 및 헥사하이드로아제핀의 카르복사미드 유도체에 관한 것으로, 이 화합물은 혈소판-개재된 혈전성 질환을 치료하는데 유용하다:
Patent KR-20000010703-A (KR)
Title: New compound which one 13 class atom binds with univalent or divalent anionic tridentate ligand, producing method thereof and its use as catalyst of polymerization reaction
Inventor: BERTRAN GUI
IPC: C08G63/82
Filed: 1997-04-30
Abstract: PURPOSE: Conventional catalyst systems increase production costs because they use porphyrin ligand which is expensive and difficult to get. Also conventional catalyst systems require the addition of Lewis acid which increases the degree of complex of catalyst systems, to enhance the activities of the systems. CONSTITUTION: The invention relates to new compound having 13 class atom which binds to monovalent or divalent anionic tridentate ligand, producing method thereof and its use as a catalyst of polymerization reaction. The purpose of the invention is a producing method of the compounds of formula 1 and 2, in featuring that the compounds formula of 1 are obtained by reacting the compound of formula I with the compounds of formula II and then the compounds of formula 2 are obtained by reacting the compounds of formula 1 with the compounds of formula III.
Patent KR-20000016271-A (KR)
Title: Method of reading and refreshing a dynamic semiconductor memory
Inventor: ZIBERT MARTIN
IPC: G11C11/401
Filed: 1997-06-04
Abstract: PURPOSE: Disclosed is a method of reading and refreshing data contents of a dynamic semiconductor memory by using at least two data buses. CONSTITUTION: The data reading and refreshing method comprises a plurality of volatile storage locations disposed in matrix-like manner in columns and rows. Data contents are read from addressed storage locations by means of at least two data buses (DQ1, DQ2) to which the data contents are applied word-by-word. The data contents of the storage locations are refreshed by a refresh pulse. According to the invention, the data words (D1, D3) present at the data buses (DQ1, DQ2) when the refresh pulse has been triggered are maintained for a predetermined time interval at all the data buses, and only then switched off by a switch-off pulse.
Patent KR-20000050845-A (KR)
Inventor: KWAK JIN GEUN
IPC: B41J2/435
Filed: 1999-01-15
Abstract: PURPOSE: A voltage feed device of a printer is provided to stably feed voltage to a developing roller elevating in a printer and a charger by employing a compressive coil spring. CONSTITUTION: A developing roller(41) rises to be adjacent to a photosensitive belt when a printer performs printing. A developing roller support block(45), a first elevation block(160) and a first elevation electrode(110) rises. A first fixed electrode(120) is maintained in a regular position without rising. A first electrode connecting spring(130) is compressed a certain length by contacting to the first elevation electrode. A first power supply connecting spring(140) is maintained in the state of contacting to a first contact plate(150). By the rising of the developing roller, the first elevation electrode and the first fixed electrode are connected by the first electrode connecting spring and a first voltage from a power supply is fed to the developing roller. If there is a disturbance while the first elevation electrode is connected to the first fixed electrode, the connecting state is maintained stably by the elasticity of the first electrode connecting spring. Thereby, a voltage is fed to the developing roller stably.
Patent KR-19990067959-A (KR)
Title: 송신시스템,송신방법및송수신시스템
IPC: H04L12/40
Filed: 1999-01-18
Abstract: IEEE1394 버스(bus)를 통하여 상호 접속된 제어장치와 목표장치(target apparatus)를 구성하는 송신시스템에 있어서, 오디오 메인데이터(main data)의 송신에 대해서는 동기식 갭(isochronous gap)을 갖고, 커맨드데이터(command data)의 송신에 대해서는 비동기식 갭(asynchronous gap)을 갖는 단일데이터(unitary data)는 버스를 통하여 제어장치와 목표장치사이에서 송신된다.    제어장치는 비동기식 갭을 사용함으로써 목표장치를 식별하기 위한 식별자(identifier)를 송신하는 송신수단과 또한 목표장치로부터 신호레벨의 송신을 요구하기 위한 커맨드를 포함하여 구성한다.    목표장치는 IEEE1394 버스를 통하여 제어장치의 송신수단으로부터 식별자와 또한 목표장치의 신호레벨의 송신을 요구하기 위한 커맨드를 수신하는 수신수단과 수신수단에 의해 수신된 신호레벨 송신요구 커맨드에 따라서 오디오신호레벨을 송신하는 송신수단을 포함하여 구성한다.    이 시스템에서, 출력레벨은 제어장치에 의해 목표장치로부터 설정되어 독출가능하다.
Patent KR-20000059418-A (KR)
Inventor: LIM DAE JIN
IPC: H04N5/60
Filed: 1999-03-03
Abstract: PURPOSE: A device for processing the audio information of a digital TV set is provided to convert audio data, generated when the audio data information of data broadcast and general broadcast are duplicated, into text data, when a user simultaneously views the general broadcast and the data broadcast, so that the loss of audio data information is prevented and various audio services is provided. CONSTITUTION: A user interface(100) sets up the automatic converting function of a text string for audio data information duplicated according to a user operation. An audio data and voice controller(110) separates audio data information from the data broadcast, according to the set-up automatic converting function of the text string. A voice recognizing code table circuit(120) converts the separated audio data information into a corresponding text string value. A text font circuit(140) converts the converted text string value into a font value displayed on a screen. A synchronization control and interface circuit(130) synchronizes the converted font value according to the synchronization information of the audio data information. And a displayer displays the synchronized font value on a screen.
Patent KR-20000059505-A (KR)
Inventor: KWON GYEONG AN
IPC: H02P31/00
Filed: 1999-03-04
Abstract: PURPOSE: A drive circuit for a single phase SRM is provided to compensate active power factor in a low price by using an existing single phase SRM drive switch device without using a switch device. CONSTITUTION: An upper backward diode(Du) and a lower switch(SpL) for compensating power factor as high frequency switch are serially connected between a positive power terminal and a negative power terminal. Each of an upper switch(Su) and a lower backward diode(DL) is connected in parallel to each of the upper backward diode(Du) and the lower switch(SpL), respectively. A motor winding(LM) is connected between first connecting point of the upper backward diode(Du) and the lower switch(SpL), and second connecting point of the upper switch(Su) and the lower backward diode(DL). A capacitor(Cs) is connected in parallel with the upper switch(Su) and the lower backward diode(DL).
Patent KR-20000061503-A (KR)
Inventor: KANG NEUNG SEOK
IPC: H01L21/304
Filed: 1999-03-26
Abstract: PURPOSE: A wafer washing apparatus is to prevent a metal layer for a wiring from formed on a substrate being corroded by increasing a concentration of a deionized water. CONSTITUTION: A wafer washing apparatus comprises a washing bath(50) in which a wafer is immersed and is washed, a nozzle(52) for supplying a deionized water into the bath, and a nozzle for supplying an inert gas into the bath. The inert gas supplying nozzle is positioned on a bottom of the bath. The inert gas supplying nozzle is provided with a number of holes to produce an inert gas bubble through the holes under. The bath is filled with the deionized water. When the wafer is immersed in the bath, impurities existed by a previous strip process are removed by the deionized water. Although the washing process is carried out during 500 to 600 seconds, a nitrogen gas included in the bath prevents the corrosion of the wiring.
Patent KR-20000061551-A (KR)
Inventor: HONG WAN KI
IPC: E01D21/00
Filed: 1999-03-27
Abstract: PURPOSE: The execution of a floor slab for a built-up elevated road and a bridge is provided, which is simple to construct a straight and arch shaped floor slab not to cause traffic congestion in a short period and keeps the condition of execution firmly. CONSTITUTION: A floor slab (4) for a built-up elevated road and a bridge comprises; a layer section (1) which secures stability and disperses load on the ground; a support section (2) which is stood on the limited space of the existing road surface firmly and is arranged along a constructing road surface at regular intervals; a pavement part and a guide rail (3) which is installed on the upper side of a support part (2) and above floor slab for a road is constructed by installing a floor slab (4), composed by the mutual erection of a joint flute and a joint tool lengthwise and widthwise, on a support section (2).
Patent KR-20000065595-A (KR)
Inventor: NOH HAE YONG
IPC: H04B1/40
Filed: 1999-04-07
Abstract: PURPOSE: A method for displaying an estimated usage time and a remaining battery is provided to measure a present battery voltage and read preregistered usage time data of a digital portable terminal responding to the measured voltage value, so that a user can know an accurate usage time and the rest of the battery. CONSTITUTION: A present mode is switched into a data communication mode(610). A battery measuring circuit measures a remaining battery(612). A controlling circuit displays an estimated usage time according to the measured result(614). Whether the terminal connects with an external power supplier is decided(616). If so, the first step is repeated and the battery is charged. If not, whether the rest of the battery is estimated at a low level is decided(618). If so, a specific alarm is given(620). A call connection is canceled(622). A terminal transmits a specific signal when an operation power is supplied, to continuously transceive data.