baber/WOPTO huggingface dataset:
Patent KR-19990029644-A (KR)
Title: 차량 미러용 와이퍼
IPC: B60R1/06
Filed: 1998-09-09
Abstract: 하나의 구동부 케이스내에 구동에 관한 구성요소를 격납할 수 있고, 더구나, 링크부재를 짧게 하기 위해서, 미러(57a)가 미러 케이스(56)에 유지되고, 좌우모터(61) 및 상하모터(62)가 구동부 케이스(55)내에 격납되어, 각 모터(61,62)의 구동을 받아 경사운동기구수단이 미러(57a)를 경사운동시키고, 와이퍼모터(63)가 구동부 케이스(55)내에 격납되고, 와이퍼모터(63)의 회전을 전달하는 와이퍼구동전달수단이 구동부 케이스(55)내에 격납되고, 와이퍼구동전달수단으로부터의 출력을 왕복회전운동으로 변환하는 링크기구부(D) 및 회전축부(E)가 미러 케이스(56)에 격납되어, 변환수단으로서의 링크기구부(D) 및 회전축부(E)에 의해서 변환된 왕복회전운동에 의해서 와이퍼본체가 미러의 표면을 닦는다.
Patent KR-19990029891-A (KR)
Title: 방출제어 및 서방형 경피 투여용 신규 조성물
IPC: A61L15/58
Filed: 1998-09-17
Abstract: 본 발명에서는, 
     A) 유연한 지지층; 
     B) 하기 성분을 포함하는 점착층; 및 
     - 감압점착성 중합체 매트릭스, 
     - 결합성 개선제, 
     - 점착부여제, 
     - 제 1성분으로서 각각 CH 3 -(CH 2 ) n -COOH 또는 CH 3 -(CH 2 ) n -CH 2 OH (n은 6 내지 16의 정수임)로 표현되는 포화지방산 또는 지방알콜을 포함하고, 제 2성분으로서 각각 CH 3 -(C n H 2(n-1) )-COOH 또는 CH 3 -(C n H 2(n-1) )-CH 2 OH (n은 8 내지 22의 정수임)로 표현되는 모노불포화 지방산 또는 지방알콜을 포함하여 이루어지고, 상기 제 1성분과 제 2성분의 사슬길이가 서로 다른 것을 조건으로 하는 투과촉진제 배합체, 
     C) 사용할 때 제거되는 보호성 박리막(release liner)을 필수성분으로 포함하고, 방출제어 시스템을 통해 약물을 경피투여하는 패치제를 제공한다.
Patent KR-20000020022-A (KR)
Title: Device for post treating of paper
Inventor: JEONG JAE HYUN
IPC: B65H33/08
Filed: 1998-09-17
Abstract: PURPOSE: A post treating device is provided to stably align a paper by buffering a shock generated when a paper bundle is aligned since it is installed in a paper supply unit of an image forming device such as a duplicator, a printer, a facsimile and so on. CONSTITUTION: A paper supplied from a paper supply hole of an image forming device is passed through a paper transmission unit of a post treating device(30) so that a paper discharged from a paper discharge hole is stored in an upper tray(33,33'). If the storage of the paper bundle limited by a regular number of the discharged paper is finished, the upper tray motors(35,35') repeat a reverse and a forward rotation so that the paper bundle is aligned by reciprocally moving the upper tray. Herein, a spring is prepared in a position fixing hole(43) of the upper tray driving unit for transmitting a driving force so that the paper is prevented from being wrinkled since the resistance of the paper bundle is buffered.
Patent KR-20000020218-A (KR)
Title: Preparation method of n,n'-substituted urea using selenium-alkali carbonate catalyst
Inventor: KIM HOON SHIK
IPC: C07C275/18
Filed: 1998-09-18
Abstract: PURPOSE: A preparation method of N,N-substituted urea by reacting amine with carbon monoxide and oxygen in the presence of selenium compound catalysts and alkali carbonate co catalysts is provided which can produce in high yield, increases the productivity by reducing the amount of a catalyst used and generate almost no side-products. CONSTITUTION: A method for making N,N-substituted urea of formula (I) which comprises reacting amine with a mixture of gases of CO/O2 in the presence of catalysts of one or more selenium compounds selected from SeO2, (CH3O)Se(O)(OH) and (CH3CH2O)Se(O)(OH) as a major catalyst and alkali carbonates as a co catalyst and a solvent at 80-250°C at 30-200 atm. The formula(I) is RNH-C(=O)-NHR (I) in which R is 1-18C alkyl, cyclohexyl, phenyl or benzyl. The mole number of the selenium compound to the amine and the co catalysts to the major catalysts are 1/12,800-1/200 and 0.1-10 respectively and the mole ratio of CO to O2 is 95: 5-55: 45.
Patent KR-20000020623-A (KR)
Title: Grouping and ungrouping method of sector-cell using dummy channel card in cellular system
Inventor: KIM TAE HYUN
IPC: H04B7/155
Filed: 1998-09-22
Abstract: PURPOSE: A grouping and ungrouping method of a sector-cell additionally mounts a dummy channel card on a base station of sector-cell structure, and groups many sectors as one virtual cell by using the dummy channel card, and ungroups a group cell to an original sector. CONSTITUTION: If a service area of a base station is divided into alpha, beta, gamma sector having a first to a third pilot signals, the base station transmits a fourth pilot signal to alpha, beta and gamma sector by using a dummy channel card. Therefore, each sector of a base station has the same pilot signal(i.e., fourth pilot signal). And one grouping cell is made. A mobile telephone recognizes the grouping cell as one cell, and a hand-off between sectors is not generated for a moving time within the grouping cell. A service area of a base station is grouped as the fourth pilot signal transmitted through the dummy channel card. The base station transmits an inherent pilot signal corresponding to each sector through overhead channel for each sector. Therefore, each sector of a base station has an inherent pilot signal(first, second or third pilot signal). If there are too many subscribers in the grouping cell, the base station performs ungrouping of cell, thus many subscribers are included in the base station.
Patent KR-20000021524-A (KR)
Title: Adaptive equalizer for high definition digital vcr
Inventor: JEONG MYUNG HWAN
IPC: H04L25/03
Filed: 1998-09-30
Abstract: PURPOSE: An adaptive equalizer for high definition digital VCR is provided to decrease a manufacturing cost by being embodied in a simple composition. CONSTITUTION: A first head(202) and a second head(204) reproduce data recorded in a baseband method as an analog RF signal and amplify the reproduced data. Analog/digital converters(206,208) sample the data amplified by the first head(202) and the second head(204) according to a clock(fs). A feed forward filter(214) filters the data sampled by analog/digital converters(206,208) and outputs a filter output value. A determining unit(216) determines the filter output value of the feed forward filter(214) as three levels. An error value computing unit(220) computes the determined value of the determining unit(216) and the filter output value of the feed forward filter(214), and then outputs an error value(e). An equalizing weight renewing unit(222) computes a new equalizing weight(W) according to the error value(e) from the error value computing unit(220).
Patent KR-20000028447-A (KR)
Title: Method for supplying additional information services for multi media television
Inventor: JEONG HAE MUK
IPC: H04N21/43
Filed: 1998-10-31
Abstract: PURPOSE: A method for supplying additional information services for multi media television is provided to set up channel numbers, which are not duplicated with available channels, as virtual channels in the multi media TV having many channels, and to quickly give additional information services using a telephone. CONSTITUTION: A method for supplying additional information services for multi media television comprises the steps of: setting up virtual channels which are not duplicated with available channels, and registering one additional service for using a telephone to one virtual channel; selecting a reference channel managing a channel scan region between a broadcasting channel region composed of the available channels and a virtual channel region composed of the virtual channels; checking whether a selected channel is a broadcasting channel or a selected reference channel, when a channel conversion signal is inputted while performing a watching mode; connecting a modem to an ISP(Internet Service Provider) if the reference channel is selected, and waiting for a user's selection for the virtual channel; and supplying additional services by connecting a communication network supplying the registered additional service to the virtual channel and to the modem through the ISP.
Patent KR-20000031396-A (KR)
Title: Method for removing bubble of drum washing machine
Inventor: LEE HYEON IL
IPC: D06F39/08
Filed: 1998-11-06
Abstract: PURPOSE: A method for removing a bubble is provided to remove the bubble generated by crashing with a washing tub excessively and to prevent an overload of a driving motor by a fluid resistance of the bubble. CONSTITUTION: A microcomputer(40) controls operations of a driving motor(19), a water supply valve(27), a drain pump, and a shower valve(33). The microcomputer(40) controls a driving unit according to a signal inputted from a decided data, a unit for inputting a key(41), a sensor of water level(43), a sensor of temperature(45), and a timer(47). The microcomputer decides if a driving time of regular speed of the driving motor(19) and the drain pump(30) is over a second critical time. When the second critical time is passed, the microcomputer rotates the driving motor(19) rotated in the regular speed at a low speed, and stops the driving of the drain pump(30) at the same time. Then, the generation of the bubble by the high-speed rotation of a washing tub is prevented. And a washing water of bubble is supplied to the upper part of the water tank by opening the shower valve(33) or the water supply valve(27). The bubble, impurities remained in the laundry and the bubble filled between the water tank and the washing tub are washed by the washing water.
Patent KR-20000032039-A (KR)
Title: Tft substrate for lcd
Inventor: PARK WOON YONG
IPC: G02F1/136
Filed: 1998-11-12
Abstract: PURPOSE: A TFT substrate for LCD is provided to prevent the defective of gate lines. CONSTITUTION: A TFT substrate for LCD comprises gate lines(2), sustain capacitance lines(3), sustain capacitance electrodes(31), a gate insulating film(4), amorphous silicon patterns(5), data lines(7), gate line sub patterns(73), source electrodes(71), and drain electrodes(72). The gate lines(2) and the sustain capacitance lines(3) are extended across a transparent insulating substrate(1). The sustain capacitance electrodes(31) are formed as branches of the sustain capacitance lines(3). The amorphous silicon patterns(5) are formed along the gate lines(2) on the insulating film(4) and separated each other. The gate line sub patterns(73) are formed on the patterns(5).
Patent KR-19990087000-A (KR)
Title: 반도체 장치 및 그 제조 방법
IPC: H01L21/302
Filed: 1998-11-13
Abstract: 실리사이드 보호용 SiO 2 막을 형성할 때에 SOI층까지가 에칭되게 되는 것을 방지한다. 
     게이트 전극(6)과 측벽(5)을 피복하도록 SOI층(3) 상에 제1 절연막(81)과 제2절연막(82)을 순차적으로 적층하고, 각각의 에칭 선택비를 바꿔서[제2 절연막(82)의 에칭율 분을 작게 한다], 양 막(81, 82)을 드라이 에칭한다.  이 후, 노출하는 제1 절연막(81)의 부분을 습식 에칭에 의해 제거한다.  이에 따라, 실리사이드 보호부(8)는 SOI층(3)의 평탄 표면(3S) 상에서만 형성되며, 실리사이드층(71, 72)을 n + 층(12, 13) 내에 형성할 수 있다.
Patent KR-20000033808-A (KR)
Title: Apparatus for controlling engine of construction equipment
Inventor: KIM YEONG CHEOL
IPC: F15B15/18
Filed: 1998-11-25
Abstract: PURPOSE: A controlling apparatus of an engine of a construction equipment is provided to reduce engine torque and also fuel efficiency by using a small engine proper for the capacity of multiple pumps and by preventing the stall of an engine by returning the force of a portion of pumps to a tank after starting an engine. CONSTITUTION: A venting pressure of a first pump(43) is vented to a working and traveling device(46) for preventing the stall of an engine at the first stage of starting an engine, but the venting pressure of a second pump(44) is returned and flowed into a tank(42) without being vented to the working and traveling device. Then an engine(41) for optimal use is not stalled at the first stage of starting. Herein, a tank returning unit(49) is installed to the second pump for the returning of operation oil of the second pump, and control signals of a controller(48) is received. The controller compares the rotational frequency measured by a rotation frequency detecting unit(47) with a predetermined reference rotational frequency. If the measured rotational frequency is lower than the reference one, a pump returning signal is output. So the tank returning device is opened, and the operation oil is returned to the tank. Thereby, excessive torque is not formed in the engine. If the measured rotational frequency is lower than the reference rotational frequency, a pump returning signal is output.
Patent KR-20000038210-A (KR)
Title: Non-control frequency demodulator
Inventor: BAE JONG DAE
IPC: H03D3/00
Filed: 1998-12-04
Abstract: PURPOSE: A non-control frequency demodulator is provided to integrate in one chip by using a pulse density modulation signal generator. CONSTITUTION: A non-control frequency demodulator includes a pulse density modulation signal generator(52) and a low pass filter(54). The pulse density modulation signal generator(52) receives a frequency modulated message signal through an external communication channel and pulse-density-modulates it to have different pulse density corresponding to a frequency of the message signal, and outputs a pulse-density-modulated signal. The low pass filter(54) low pass filters the pulse-density-modulated signal from pulse density modulation signal generator(52) and passes a direct current component included in the pulse-density-modulated signal to thereby recover the original message signal.
Patent KR-20000038570-A (KR)
Title: Reserved recording method of vcr without tuner
Inventor: KO MYEONG JIN
IPC: G11B27/02
Filed: 1998-12-08
Abstract: PURPOSE: A reserved recording method of a VCR without a tuner is provided to record a broadcasting signal needed to be reserved recorded by using a tuner of a television in the VCR without the tuner. CONSTITUTION: A tape is inserted after turning on a power and it is decided if a selecting key of reserve recording mode is inputted. When the selecting key of reserve recording mode is inputted, a reserved information of a reserved recording program is displayed, selected and stored. When a present time and a reserved time are conformed, the reserved information is converted to an analog signal after turning on the power of a VCR and a television. A carrier corresponding to the reserved information is generated and the carrier and the reserved information converted to the analog are transmitted to the television by modulating. When the carrier is in the received modulated signal, the received modulated signal is demodulated to an original signal. A broadcasting signal of a channel corresponding to the reserved information converted to a digital signal is tuned after converting the demodulated signal to the digital signal. After the tuned broadcasting signal is transmitted to the VCR and the transmitted broadcasting signal is recorded by receiving, a main loop is finished after turning off the power of the VCR and the television when it is decided that the recording of the broadcasting signal is finished.
Patent KR-20000040189-A (KR)
Title: Carrier drying device for wet type printer
Inventor: LEE JIN SU
IPC: B41J2/435
Filed: 1998-12-17
Abstract: PURPOSE: A carrier drying device for a wet type printer is provided to improve the drying efficiency by effectively drying carrier absorbed in a drying roller by a blowing fan and a heater, so that the saturation of a lipophilic layer of the drying roller due to the absorbed carrier is constrained, thereby achieving a long time printing operation and solid images of high coverage. CONSTITUTION: A carrier drying device for a wet type printer includes a drying roller rotatably mounted in contact with a photosensitive belt for absorbing residual liquid carrier on a transfer surface of the photosensitive belt, a heating roller mounted to be able to contact the drying roller for evaporating the liquid carrier absorbed in the drying roller by heat, a blowing fan mounted adjacently to the drying roller for forcibly blowing wind toward the drying roller to dry the liquid carrier absorbed in the drying roller by the blown wind, and a heater mounted adjacently to the blowing fan for heating surrounding air of the blowing fan.
Patent KR-20000040575-A (KR)
Title: Method for preventing divergence while extracting hidden markov model parameter in car voice recognition system
Inventor: LEE BONG WOO
IPC: G10L15/02
Filed: 1998-12-18
Abstract: PURPOSE: A method for preventing divergence while extracting hidden markov model parameters in a car voice recognition system is provided to prevent divergence by performing additional testing process. CONSTITUTION: A method for preventing divergence while extracting hidden markov model parameters in a car voice recognition system includes a first through a seventh steps. At the first step(S10,S20), the number of repetition is set. At the second step, a maximum repetition number is set, and a vocabulary model is generated(S30,S40). At the third step, whether an impossible calculation occurrs is determined. At the forth step(S60), annealing is performed. At the fifth step(S52,54,56), current repetition number is decrease by 1 and the annealing continues. At the sixth step(S70,S80), whether the number of repetition is the same as that of the escapes. At the seventh step, the preceeding processes are performed from the beginning.
Patent KR-19990063369-A (KR)
Title: 광 촉매체, 램프 및 조명 기구
IPC: H01J61/35
Filed: 1998-12-23
Abstract: 본원 발명의 광 촉매체는 기체(基體)와, 기체에 형성되어 표면에 요철면을 구비한 금속 산화물 또는 산화 규소중 적어도 한쪽으로 이루어지는 부산화물을 주체로 한 기초층과, 기초층의 요철면 내로 들어가서 밀착하여 형성된 산화 티탄 초미립자를 주체로 하는 광 촉매막을 구비하고 있어 기초층에 대한 부착성이 양호하고 가시광의 투과율이 높다.
Patent KR-20000042859-A (KR)
Title: Method for forming metal line of semiconductor device
Inventor: LEE TAE KOOK
IPC: H01L21/28
Filed: 1998-12-28
Abstract: PURPOSE: A method for forming a metal line of a semiconductor device is provided which can prevent the bridge between lines and can reduce the fabrication cost by proceeding a dual damascene process. CONSTITUTION: A method for forming a metal line includes the steps of: forming an inter level insulation film(31) on a semiconductor substrate(30); forming a photoresist film pattern having an open aperture having a contact on the inter level insulation film; forming a trench by etching the inter level insulation film revealed by the open aperture; forming a relux film on the whole surface where the photoresist film pattern is formed for the trench to be buried; revealing the trench by forming a relux film pattern; forming a contact hole of line shape by etching the trench using the relux film pattern and the photoresist film pattern as an etch mask; removing the relux film pattern and the photoresist film pattern; forming a metal line film on the inter level insulation film to be filled in the contact hole; and forming a metal line(36A) by blanket etching of the metal film until the inter level insulation film is revealed.
Patent KR-20000043520-A (KR)
Title: Test carrier
Inventor: LEE CHUNG U
IPC: H01L21/66
Filed: 1998-12-29
Abstract: PURPOSE: A test carrier is to prevent a bear chip mounted substrate from bending due to the difference of thermal expansion coefficient of pressure and bear chips, and to prevent a height difference of bumps from being generated. CONSTITUTION: A test carrier comprises a bear chip mounted substrate(110), and a socket(120) for receiving and pressing a bear chip(1) mounted on an upper surface of the bear chip mounted substrate. The bear chip mounted substrate is made of a silicon wafer having a same thermal expansion coefficient as that of the bear chip. The bear chip mounted substrate has a bump(112) on a portion of the substrate corresponding to an electrode pad of the bear chip, and a connecting pad(116) on an edge thereof. The bump is protruded from the upper surface of the substrate and is connected to the electrode pad of an edge chip. The connecting pad is electrically connected to a conductive pattern(114).
Patent KR-20000044137-A (KR)
Title: Method for coating a vibrational motor
Inventor: KIM SEUNG BEOM
IPC: H02K7/06
Filed: 1998-12-30
Abstract: PURPOSE: A method for coating a vibrational motor is provided to form a coating layer uniformly and improve the reliability of the product by restraining the corrosion. CONSTITUTION: A brush base(20) which is connected to a connector is inserted into one end of a cylindrical case(10) through a lead wire(21). A through-hole(22) which is communicated with the inner surface of the case is formed in the brush base(20). A washer(W) is disposed in the through-hole(22) of the brush base(20). A housing(30) in which an insertion hole is formed is integrally formed with the other end of the case(10). One end of the housing(30) is extended towards the interior of the case(10). A guide hole(32) is formed in the central surface of the housing(30). A commutator(40) is located on the inner surface of the case which is adjacent to the brush base(20). A shaft(50) is provided at the central portion of the case(10). One end of the shaft(50) is extended to a position which is adjacent to the inner peripheral surface of the brush base(20).
Patent KR-20000044710-A (KR)
Title: Evaporator of window type air conditioner
Inventor: LIM CHAN HO
IPC: F24F1/02
Filed: 1998-12-30
Abstract: PURPOSE: An evaporator of a window type air conditioner is provided to induce the required cooling efficiency, and to prevent freezing caused by insufficient capacity of a main evaporator by installing the main evaporator(10) and the auxiliary evaporator driven simultaneously or separately according to the selected air flow. CONSTITUTION: In an indoor unit of a window type air conditioner, which is defined as inner space and outer space by indoor and outdoor interception wall sieves, and ventilates cooled air by heat exchange indoor air inhaled through an inlet(110) with passing through an evaporator and discharge to outside through a discharging hole, an auxiliary evaporator(11) connected with a main evaporator(10) is installed in the side of the inlet(110), and the main evaporator(10) and the auxiliary evaporator(11) is simultaneously or separately selected by an adjusting valve(20) connected with a switch for selecting an air flow of the air conditioner.
Patent KR-19990044270-A (KR)
Title: 산광 부분이 감소된 열가소성 성형 화합물
IPC: C08L51/04
Filed: 1996-08-30
Abstract: 본 발명은 (A) 메틸메타크릴레이트 중합체 10 내지 60 중량%; (B) 비닐방향족 단량체 및 아크릴로니트릴의 공중합체 10 내지 70 중량%; 및 (C) 1,3-디엔 및 비닐방향족 단량체의 코어(C1), 비닐방향족 단량체, 메타크릴산 C 1-8 알킬에스테르 및 가교결합된 단량체의 제1그래프트 케이싱(C2), 및 메타크릴산 C 1-8 알킬에스테르 및 아크릴산 C 1-8 알킬에스테르를 포함하는 제2 그래프트 케이싱(C3)으로부터 수득한 그래프트 공중합체 15 내지 50 중량%; 및 (D) 임의로는, 통상의 첨가제의 혼합물을 포함하는 열가소성 성형 화합물에 관한 것이다.  혼합물 중의 A, B 및 C의 비율은 전체 100 중량%이다.
Patent KR-19990045755-A (KR)
Title: 유전체층을 갖는 전자 리드 구조
IPC: H01L23/31
Filed: 1996-09-18
Abstract: 전자 접속 부품(62)은 금속 도체가 있는 폴리머 띠(46, 50)에 의해 형성되는 유연성 리드(36)를 갖는다.  금속 도체(46, 50)는 매우 얇은, 바람직하게는 5 ㎛ 이하의 두께를 가지며, 피로 강도가 우수하다.  유전체띠 각각(46 또는 50)은 두 개의 도체를 가지는데, 하나는 칩(62)의 접속부에 연결되는 주 도체, 즉 신호 도체의 역할을 하고, 다른 하나는 기준 전원, 즉 접지 도체의 역할을 한다.  리드의 기준 전원 도체에 의해 누화의 방지가 개선된다.
Patent KR-19990063599-A (KR)
Title: 가교결합성 폴리올레핀 조성물
IPC: C08L23/02
Filed: 1996-10-02
Abstract: 본 발명은 우수한 가공성 및 빠른 경화 속도를 모두 갖는 가교결합성 폴리올레핀 조성물, 이런 조성물로부터 제조된 제품, 및 이런 조성물의 제조 방법에 관한 것이다.  가교결합성 폴리올레핀 조성물은 바람직하게는 M n1 /M n2 >5, m n2 >3000 및 0.7≥(A 1 /(A 1 +A 2 ))≥0.15(이때, M n1 은 상기 제 1 해법 성분의 수평균 분자량을 나타내고, M n2 는 제 2 해법 성분의 수평균 분자량을 나타내며 A 1 및 A 2 는 상기 제 1 및 제 2 성분의 상대적인 비이다)의 해법에 의해 수득된 상이한 수평균 분자량을 갖는 동일한 중합체 부류의 에틸렌 중합체들의 이성분-분산 블렌드이다.  이들 가교결합성 폴리올레핀 조성물은 다양한 제품, 예를 들면, 와이어 및 케이블 피복재, 틈마개 재료 및 밀봉, 개스킷(gasket), 폐쇄 또는 개방 셀 구조 및/또는 이들이 조합된 발포되고/되거나 스폰지-같은 가교결합된 폴리올레핀으로부터 만들어진 제품들, 중공 용기, 중공 탱크, 의료 기기, 드레이프(drape) 및 덮개, 건강 및 개인 보호 용품, 섬유, 테이프, 튜브, 파이프 및 호스, 풀무, 부츠, 각반, 신발류의 제조에 유용하다.
Patent KR-19990067081-A (KR)
Title: 광헤드
IPC: G11B7/135
Filed: 1996-10-28
Abstract: 광헤드는 광디스크(7)로부터 반사된 광(13)을 검출하기 위해 분할된 광감지 영역을 갖는 광검출기(8)와, 광감지 영역으로부터 신호를 동작시킴으로써 트래킹 에러 신호를 얻는 수단(10, 11, 12)을 구비한다. 광검출기(8)는 광디스크상에서 정보 트랙에 평행하는 제1분할선(9a)과, 제1분할선(9f)에 수직이고 광축에 대해 대칭인 제2 및 3분할선(9b, 9c)을 구비한다. 또한, 광차폐 영역(8i)은 분할선(9b 및 9c)간에 반사된 광의 일부를 차폐한다. 신호들은 대물 렌즈의 시프트 및 광디스크의 경사에 기인한 트래킹 에러 신호의 오프세트를 감소시키기 위해 동작된다. 그후, 광헤드는 푸시 풀 기술의 종래 기술의 광헤드로서 간단한 구조로 트래킹 에러 신호의 적은 오프세트를 갖는다.
Patent KR-20000064325-A (KR)
Title: 정보 통신 방법, 정보 통신 센터에서의 정보통신 장치, 정보통신 단말 장치 및 정보 통신 프로그램이 기록된 매체
IPC: H04M3/48
Filed: 1997-08-27
Abstract: 비동기를 처리를 수행하는 정보 통신 시스템의 처리 결과들을 대기하는 정보 통신 단말 장치에 처리 결과들의 송신 시간이 통지되고, 그 시스템의 통신 비용이 절감된다.  정보 서비스 센터는 차량으로부터 수신된 회수 가능한 요청에 응답하여 회수에 요구되는 처리 시간을 계산하고, 처리 시간이 특정치보다 더 길 때는 긴 처리 시간과 처리 완료 예정 시간(단계 103 내지 105)을 차량에 통지한 후에 회선을 절단한다.  그 다음에, 회수를 수행하고 응답을 얻는다(단계 106).  차량 측에서는, 그 시간을 수신할 때에 처리 완료 예정 시간이 표시되고, 예정 시간이 수신될 대에 절단된 회선을 재접속함으로써 응답이 얻어진다.  그 다음에, 응답 수신이 표시된다(단계 152 내지 156).