baber/WOPTO huggingface dataset:
Patent KR-20000009269-A (KR)
Title: Remoter record guide apparatus in electronic switch system
Inventor: LEE SANG SEOK
IPC: H04Q9/00
Filed: 1998-07-22
Abstract: PURPOSE: A remote record guide apparatus capable of recording all record guide devices in an electronic switch system with a uniform quality of a sound and reducing a recording time by simultaneously recording much sound is provided. CONSTITUTION: The remote record guide method in an electronic switch system comprising, the method comprising the steps of: remotely starting a recording operation with respect to a record guide apparatus by an upper process board when paths are formed in channels of a record source device and the record guide apparatus; recording a kind of a record message and record time information in a mutual communication area when the recording operation is started by the upper process board; reading remoter recording information from the mutual communication area, recording a size of a message to be stored in a memory, and transmitting time and remote record information to a control section; and completing a remote record by producing a memory select signal, a write enable signal, and an address by the control section.
Patent KR-19990029414-A (KR)
Title: 감방사선성 수지 조성물
IPC: G03F7/004
Filed: 1998-09-01
Abstract: 각종의 방사선에 감응하고, 감도 및 해상도가 우수함과 동시에, 정재파의 영향이 적고, 패턴 형상에도 우수하며, 또한 고도의 내열성을 갖는 화학 증폭형 포지티브형 레지스트로서 감방사선성 수지 조성물을 제공한다. 
     감방사선성 수지 조성물은 (A) (a) 중합성의 탄소-탄소 이중 결합을 1개 갖는 단량체에서 유래하는 반복 단위 (I)과, (b) 중합성의 탄소-탄소 이중 결합을 2개 이상과, 산의 작용에 의해 분해하는 2가의 에스테르기 및(또는) 카르보네이트기를 적어도 1개 갖는 단량체로서, 각 탄소-탄소 이중 결합이 상기 2가의 기를 개재하여 연결한 구조를 갖는 단량체에서 유래하는 반복 단위 (II)를 함유하는 공중합체, 및 (B) 감방사선성 산 발생제를 함유한다.
Patent KR-20000018803-A (KR)
Title: Output buffer circuit having preset function
Inventor: CHOI JIN HYEOK
IPC: H03K19/00
Filed: 1998-09-04
Abstract: PURPOSE: An output buffer circuit is provided to perform an effective preset operation by improving a drive capability. CONSTITUTION: An output buffer circuit includes a first through third logic units, a first and second switching units, an inverter, a first and second reference voltage generators(301,302), and a first and second comparators(303,304). The first logic unit receives a preset signal and a data signal and outputs a signal of logic high when both the preset signal and the data signal are logic low. The second logic unit receives the preset signal and the data signal and outputs a signal of logic low when both the preset signal and the data signal are logic high. The first switching unit receives an inverted output of the first logic unit and outputs a power supply voltage. The second switching unit receives an inverted output of the second logic unit and passes the output of the first switching unit through a ground terminal. The third logic unit receives an output of the first logic unit and an inverted output of the second logic unit and outputs a signal of logic high when both the output signal of the first logic unit and the inverted output of the second logic unit are logic low. The inverter inverts an output signal of the third logic unit. The first reference voltage generator operates according to the output of the inverter, and stops an operation when the output voltage of the first reference voltage generator goes lower than a predetermined voltage. The output voltage of the first reference voltage generator decreases when the power supply voltage increases. The first comparator operates according to the output of the inverter, and compares the output voltage of the first reference voltage generator and a data output voltage between the first and the second switching units. The second reference voltage generator operates according to the output of the third logic unit, and stops an operation when the output voltage of the second reference voltage generator goes higher than the predetermined voltage. The output voltage of the second reference voltage generator increases when the power supply voltage increases. The second comparator compares the output voltage of the second reference voltage generator and a data output voltage between the first and the second switching units.
Patent KR-20000019677-A (KR)
Title: Steel structure work frame for quick assemblage and installation
Inventor: BAEK SOO GON
IPC: E04G1/14
Filed: 1998-09-15
Abstract: PURPOSE: A steel structure work frame for quick assemblage without the help of a heavy machinery such as truck crane is provided to install a support for workers and to build scaffold frames. CONSTITUTION: A work pillar(20) having a high strength and a high rigidity is made by vertically and continuously stacking rectangular box structure(30A-H) with upper/lower bolts. And a necessary article is lifted or descended by connecting a winch and a roller with a rope having a hook as fixing the rollers(12A,B) at a necessary position or the top of the pillar(20) after fixing a cheap hoist(21) at the bottom of the work pillar. When assembling a pillar body divided into two parts, the pillar(20) is assembled if the upper/lower bodies are fastened by a bolt as integrally fastening a fixing clamp(33A-H) after releasing a specific clamp and lifting upward along the winch rope by being connected to the specific clamp for assembling at the outside of the pillar.
Patent KR-19990030014-A (KR)
Title: 청소용 봉걸레
IPC: A47L13/24
Filed: 1998-09-22
Abstract: 누름 부재를 닫았을 때에 청소 시이트가 서로 접근하는 방향으로 이동하고, 받침부측의 턱 받침부에서 시이트의 단부들 끼리 겹쳐서 걸림 네일이 턱 받침부에 로크되지 않는 경우가 있다. 
     누름 부재(32)를 닫으면, 시이트 S가 압입 볼록부(32c, 32c)와 동시에 관통 구멍(36, 36)내에 밀어넣어진다. 시이트 S는 일단 받침부(31)의 상면으로부터 하면에 이르러, 압입 볼록부(32c, 32c)의 선단에서 구부려지고 다시 관통 구멍(36, 36)을 통하여 받침부(31)의 상면에 되돌아가는 경로를 거치기 때문에, 시이트 S의 경로를 길게 할 수 있다. 따라서, 누름 부재(32)를 닫았을 때에는, 시이트 S의 단부끼리가 겹치지 않고, 턱 받침부(35)를 노출시킨다. 따라서, 걸림 턱(32a)을 턱 받침부(35)에 확실히 로크할 수 있다.
Patent KR-20000020598-A (KR)
Title: Optical asynchronous transfer mode switch of time-wavelength mixed type
Inventor: KIM JEONG BYUM
IPC: H04L12/28
Filed: 1998-09-22
Abstract: PURPOSE: An optical ATM(Asynchronous Transfer Mode) switch of a time-wavelength mixed type is provided to perform a switching with the great amount, by mixing a wavelength division multiplexing(WDM) and a time division multiplexing(TDM) in an optical exchanging system with the great amount. CONSTITUTION: An optical ATM(Asynchronous Transfer Mode) switch of a time-wavelength mixed type comprises: a sub node; a wavelength separator of the inputting side; a wavelength converter of the inputting side; a signal converter of the inputting side; a processor of an input signal; a wavelength separator of the outputting side; a signal converter of the outputting side; a first wavelength converter of the outputting side; a first router of the outputting side; a second wavelength converter of the outputting side; a processor of an output signal. The sub node inputs a wavelength multiplexed signal. The wavelength separator of the inputting side separates the wavelength multiplexed signal according to the wavelength. The signal converter of the inputting side converts the wavelength of the separated signal to route. The signal converter of the inputting side converts the signal of the converted wavelength to the multiplexed signal. The processor of the input signal has a plurality of nodes of the inputting side including a router of the inputting side, for routing the multiplexed signal to a node of the outputting side.
Patent KR-20000025758-A (KR)
Title: Gastrostomy tube
Inventor: SONG HO YOUNG
IPC: A61M31/00
Filed: 1998-10-14
Abstract: PURPOSE: A gastrostomy tube is provided for surgical usage, in which the tube is inserted into the stomach, firmly fixed into the stomach walls and the abdominal walls, flexibly adapting for the conditions of the stomach walls and the abdominal walls, with minimum rejection. CONSTITUTION: A gastrostomy tube(1) made with flexible material without toxic effect to human body contains; a pipe(5) with given length, having multiple grooves(3), which is inserted into the stomach; an internal fixing device(7) for fixing the pipe(5) to the walls of the stomach; an external fixing device(9) working for fixing the pipe(5) to the abdominal wall; and an injection tube(11) for supplying food into the stomach from outside.
Patent KR-19990045256-A (KR)
Title: 산업차량의 차축요동제어장치
IPC: B66F9/075
Filed: 1998-11-13
Abstract: 포크리프트의 차축요동제어장치가 개시되어 있다. 포크리프트는 차체(2)에 의해 피봇가능하게 지지된 뒷차축(13)과 차체(2)에 견고하게 고정된 뒷차축(50)을 구비한다. 마스트(3)는 차체(2)의 정면부분에 지지되어 전후방으로 경사지게 한다. 캐리어 또는 포크(5)는 마스트(3)에 의해 지지되어 상승 및 하강된다. 전후방향에서의 포크리프트의 무게 중심은 마스트(3)가 전방으로 경사지게 때문에 앞차축(50)에 접근한다. 뒷차축(13)의 피봇은 포크(5)의 높이가 소정 높이 판정치(HA)보다 높고 포크(5)위의 하중이 미리 정해진 하중 판정치(WA)보다 높을 때 유압 실린더(17)에 의해 규제되어 차량 안정성을 개선시킨다. 하중 판정치(WA)는 마스트(3)가 전방으로 경사질 때 증가한다. 포크(5)위의 적하가 하역될 때, 뒷차축(13)의 경사는 포크(5)의 높이와 포크(5)위의 하중에 관계없이 허용된다. 그러므로, 뒷차축(13)은 불필요하게 고정되지 않는다.
Patent KR-20000032437-A (KR)
Title: Apparatus for discharging residual voltage of high voltage discharge lamp
Inventor: KIM TAE SEUNG
IPC: H05B41/18
Filed: 1998-11-14
Abstract: PURPOSE: An apparatus for discharging residual voltage of a high voltage discharge lamp is provided which can discharge a residual voltage remaining in a ballast for high voltage discharge lamp rapidly when turning the high voltage discharge lamp off. CONSTITUTION: An apparatus is provided which discharges a residual voltage remaining in a ballast when turning a high voltage discharge lamp(80) off, being adopted in the ballast for high voltage discharge lamp comprising a voltage drop part(30) dropping a voltage supplied from the external to a usage voltage of the lamp and a full bridge inverter(60) supplying the dropped voltage to the lamp in turn through a first coil and a second coil. The apparatus for discharging the residual voltage of the high voltage discharge lamp includes: a first discharge part(110) to discharge a residual voltage supplied from the voltage drop part to the full bridge inverter; a second discharge part(120) to discharge a residual voltage supplied from the full bridge inverter to the lamp through the first lamp; a third discharge part(130) to discharge a residual voltage supplied from the full bridge inverter to the lamp through the second lamp; and a system control part(40) controlling the turning-off of the lamp and at the same time controlling the discharge of the first, second and third discharge part. The apparatus reduces the time needed in turning on the lamp next time after turning off the lamp and prolongs the mechanical lifetime of the system.
Patent KR-20000034191-A (KR)
Title: Apparatus for conveying lead frame strips of semiconductor package forming device
Inventor: PARK HYEON WOO
IPC: H01L23/50
Filed: 1998-11-28
Abstract: PURPOSE: An apparatus for conveying lead frame strips of a semiconductor package forming device are provided to detect any curl on a lead frame strip before conveying lead frame strips after a forming step is performed. CONSTITUTION: An apparatus for conveying lead frame strips of a semiconductor package forming device include a forming mold(20), and a curl(374) separation device. The curl(374) separation device separates a curl between the lead frame strips(370) from the frame strip. The lead frame conveying device includes a support plate(302), a fixer, a plurality of sensor rods(306), a sensor rod body(304), and a device for the elevational motion of the head of the sensor rod. The fixer is implemented on the lower part of the support plate(302) and fixes the lead frame strips conveyed. The sensor rod(306) is implemented as to detect curls between the lead frame strips.
Patent KR-20000038132-A (KR)
Title: Sea shell powder-containing composition and preparation method thereof
Inventor: SEOK MI SOO
IPC: C04B14/26
Filed: 1998-12-04
Abstract: PURPOSE: A sea shell powder-containing composition and its preparation method are provided, which composition radiates far-infrared light and has antibacterial and sterilizing effect, therefore can be used for improving the health of a user by adhered to clothes or leathers. CONSTITUTION: A sea shell powder-containing composition comprises 2-30 wt% of sea shell powder; 1-10 wt% of silver ion inorganic antibacterial agent; and 60-97 wt% of adhesive resin or water. The composition is prepared by washing and pulverizing the far-infrared radiating sea shell; sintering the pulverized sea shell; milling the sintered sea shell in regular size; adding the milled sea shell with a silver ion inorganic antibacterial agent into adhesive resin or water solution and mixing them.
Patent KR-19990062815-A (KR)
Title: 세팅 장치
IPC: B25C1/14
Filed: 1998-12-04
Abstract: 단단한 기초에 못 형상 고정 부재를 박기 위한 세팅 장치는  하우징 (10), 가이드 실린더 (20),  이 가이드 실린더 (20) 에 축방향으로 이동가능한 구동 피스톤 (40) 및 이 하우징 (10) 과 함께 작용하는 축 (61) 을 중심으로 회전할 수 있으며,  또한 세팅 방향을 향한 구동 피스톤 (40) 의 동반 표면 (43) 을 가지는 복원 부재 (50) 를 갖는다.     이 가이드 실린더 (20) 는  하우징 (10) 에 대해 세팅 방향 반대로 스프링 (28) 의 힘에 의해 이동되며,  또한 이 복원 부재 (50) 는  가이드 실린더 (20) 와 함께 작용하는 레버 아암 (52) 을 갖는다.
Patent KR-20000038781-A (KR)
Title: Method for producing hot rolling steel plate with less material deviation between head end and tail end thereof
Inventor: LEE SANG RO
IPC: B21B3/00
Filed: 1998-12-09
Abstract: PURPOSE: A method is provided to produce a hot rolling steel plate having excellent processing property and material quality over the entire plate by lowering material quality variation of the head end and the tail end. CONSTITUTION: A hot rolling steel plate is composed of 0.04 to 0.06wt% of C, 0.2 to 1.0wt% of Mn, less than 0.025wt% of Si, less than 0.008wt% of S, less than 0.1wt% of Cr, less than 0.2wt% of Ni, less than 0.4wt% of Cu, 0.001 to 0.04wt% of Sn, 0.001 to 0,012wt% of Pb, 0.04 to 0.08wt% of Al, less than 150ppm of N, 0.0002 to 0.008wt% of Ca, remain of Fe and impurities. First rolled hot rolling bar is heated in which the head and tail part are in a hotter temperature as much as 40 to 60°C than the center part. A coil box is kept in more than 1020°C and the head and the tail part are coiled in a hotter temperature of more than 20°C than the center part.
Patent KR-19990068266-A (KR)
Title: 약품침전지의 부유물질 제거 방법 및 그 장치
IPC: C02F1/52
Filed: 1998-12-14
Abstract: 본 발명은 약품침전지의 부유물질 제거 방법 및 그 장치에 관한 것으로, 침전지의 수면상에 부유물질 수집유도판과 부유물질 수집부를 설치하여 침전지의 수면상에서 유동하는 부유물질을 수집하고 이를 월류시켜 지외로 배출함으로써 부유물질의 수집 및 제거가 원활하게 이루어지게 되며, 또한 침전지의 수면상에 부유하는 부유물질에 압력수를 분사하여 부유물질의 수집을 촉진함으로써 부유물질의 수집 및 제거가 더욱 원활하게 이루어지게 되는 것이다. 또한 침전지의 중간에 양측벽을 연결하는 워크 웨이를 설치하는 것에 의하여 침전지 양측벽의 구조적 강도를 보강함과 아울러 유지작업자로 하여금 침전지의 횡단과 유지관리 작업을 편리하게 하도록 한 것이다.
Patent KR-20000041005-A (KR)
Title: Method of underwater welding of float structure for overcoming mismatch of welded part
Inventor: EOM HO SEOP
IPC: B23K9/00
Filed: 1998-12-21
Abstract: PURPOSE: A method is provided to secure excellent welding quality by using a convenient and easy method and to solve a problem due to mismatch of a welded part in a local dry underwater welding method using a water curtain. CONSTITUTION: Welding of a matching part(35) is performed at first. A welding support member(36) is inserted to close a gap. By using a general welding of a water curtain method, a water curtain is formed in a welded part and the best quality is obtained. The welding support member has a proper shape according to the size and shape of the gap, but preferably formed in the shape of a rod of a proper diameter and formed of the same material as lower walls(12,22) and a connecting member(34) of float structures(10,20).
Patent KR-20000041137-A (KR)
Title: Voltage trip apparatus of a molded case circuit breaker
Inventor: KIM HO SEONG
IPC: H02B3/00
Filed: 1998-12-21
Abstract: PURPOSE: A voltage trip apparatus of a molded case circuit breaker is provided to enhance the reliability of a molded case circuit breaker by breaking an application of an overvoltage through the detection of an input voltage level. CONSTITUTION: A transistor(Q1) is connected to an output terminal of the bridge diodes(D1-D4). The anode of a zener diode(ZD1) is connected to the collector and the base of the transistor(Q1) through a resistor(R2) and the cathode of the zener diode(ZD1) is connected to the ground. A trip coil is connected in paralleling with a capacitor(C1). An operational amplifier compares an output of the transistor(Q1) with a reference voltage(Vref) and outputs a high signal in case that the output voltage is larger than the reference voltage. An SCR is turned on to ground the output of the transistor(Q1).
Patent KR-20000044686-A (KR)
Title: Floating point subtraction circuit
Inventor: YU IN SUN
IPC: G06F7/42
Filed: 1998-12-30
Abstract: PURPOSE: A floating point subtraction circuit is provided to normalize final results without a normalization compensating circuit and to reduce critical routes. CONSTITUTION: A floating point subtraction circuit subtracts B from A in relation to two input A and B. the circuit consists of the subtraction part that generates a borrow number according to the subtraction results, the leading zero prediction part that decides the number of the leading zero after inputting the input A, B and the borrow number from the subtraction part, the leading zero prediction part that the number of the leading zero and the shift register that executes the left shifting by the number of the leading zero from the leading zero prediction part.
Patent KR-20000046161-A (KR)
Title: Method for analyzing event information table for digital televisions
Inventor: CHOI GYEONG ROK
IPC: H04N5/445
Filed: 1998-12-31
Abstract: PURPOSE: A method for analyzing EIT(Event Information Table) for digital televisions is provided to process the EIT information efficiently in order to provide auxiliary information of the broadcasting program more quickly. CONSTITUTION: A method for analyzing EIT for digital televisions includes a first thru a third steps. At the first step(S100), the EIT storing information on the broadcasting program is detected from an auxiliary information signal series and is sorted based on the order of broadcasting time. At the second step(S300), a predetermined priority with the reference of current time is set in the EIT. At the third step(S430), a highest priority in the EIT is analyzed.
Patent KR-20000046399-A (KR)
Title: Channel assignment method for subscriber call in telephone network access subsystem of advanced information communication processing system
Inventor: KIM NAM SOO
IPC: H04L12/16
Filed: 1998-12-31
Abstract: PURPOSE: A channel assignment method for a subscriber call in the telephone network access subsystem of the advanced information communication processing system is provided to equally distribute the loads of central processing units managing modem channels. CONSTITUTION: A TPIB(Telephony Processor Interface Board) requests channel assignment information to a TSPB(Telephony Signal Processing Board) through an S-bus(S410). The TSPB checks a modem seizure state, carrying out the inter processor communication with central processing units which administer the modem channels of a TDLB(Text Data Line Board)(S420). The TSPB transmits channel seizure information to the TPIB through the S-bus(S430). The TPIB connects the call of a subscriber to the modem channel which a central processing unit having the lowest channel seizure rate administers, using information for the channel seizure state of the TDLB(S440).
Patent KR-20000046515-A (KR)
Title: Infrared ray bolometer
Inventor: YONG YUN JUNG
IPC: H01L27/14
Filed: 1998-12-31
Abstract: PURPOSE: An infrared ray bolometer is provided to prevent a bending of the absorbing portion having a three-layer structure. CONSTITUTION: An infrared ray bolometer(201) comprises a driving substrate level(210) which has a substrate(212) on which an integrated circuit is formed and a connecting terminal(214), a supporting level(220) having a supporting bridge(240) formed of silicone nitride, a post(270), and an absorbing level(230) which has an absorbing portion(295) made of SiO2 and SiOxNy and an element of a bolometer. The absorbing portion is comprised of a middle layer(295b) which encapsulates the element of the bolometer and is made of SiO2, an upper layer(295c) and a lower layer(295a) which are respectively formed at an upper and lower side of the middle layer. The upper and lower layers are made of a same material.
Patent KR-20000046815-A (KR)
Title: Test logic circuit for memory
Inventor: BAE YUN SEOP
IPC: G11C29/00
Filed: 1998-12-31
Abstract: PURPOSE: A test logic circuit is provided to process at high speed and to automatically verify a miss-operation of memory. CONSTITUTION: To test a memory cell(21), a test pattern is written in a register inside a control unit of write data pattern(26). An initial address to be tested is written in an address storage unit inside a generating unit of write address. A number to test is written in an address counter unit, and then a test mode is set. The write data is fed to a write data port(22) and transferred to the memory cell(21). A generating unit of read address(28) generates a read address by supplying the write address when a next write address is supplied. The read address is transferred to a decoder of read address(25). The read data is transferred to a data comparing unit(29) by outputting through a read data port(24). The data comparing unit(29) transfers the data supplied from a patterning unit of test data(26) to a comparator by matching a timing with the read data. The comparator decides a miss-operation of memory cell(21) by comparing the write data and the read data.
Patent KR-19990067324-A (KR)
Title: 최소한 부분적으로 용융된 입자 및 불꽃 용융에 의해서 이를제조하는 방법
IPC: B01J2/16
Filed: 1996-10-31
Abstract: 본 발명은 고형의, 대개 타원형인 입자를 포함하는 부피가 큰 입자상 물질을 제조하는 방법에 관한 것이다. 평균 입자 크기가 부피를 기준으로 하여 25미크론 이하인 불규칙한 형상의 공급물 입자는 힘 및/또는 유동화제를 가하여 연소가능한 기체 혼합물의 적어도 일부분에 분산된다. 입자의 응집 또는 재응집을 조절하면서, 현탁액내의 입자를 갖는 연소 가능한 혼합물을 하나이상의 불꽃면으로 전달한다. 여기에서, 혼합물 및 현탁된 입자는 이의 표면(들)상에 균일하게 분포되며, 혼합물내의 고농도의 입자를 갖는 불꽃면(들)을 통과하게 된다. 현탁된 입자를 포함하는 불꽃(들) 및 불꽃면은 하나이상의 "벽면 자유" 영역내에 위치한다. 상기 영역에서 입자를 분산 상태로 유지하고 가열하면서 가열 에너지를 고효율로 조절하면서 불꽃면을 팽창시킬 수 있다. 적어도 부분적인 용융이 높은 열 효율로 적어도 입자의 표면내에서 발생하면서, 용융동안 입자의 응집은 억제된다.
Patent KR-19990076574-A (KR)
Title: 차량용탱크통풍장치
IPC: F02M25/08
Filed: 1997-09-24
Abstract: 연료탱크(10)로부터 공급받는 연소기관을 위한 탱크 통풍장치는 연료탱크(10)의 통기단관(13)에 흡착필터(18)로 연결될 수 있는 필터 케이싱(17) 및 공기유입구(19)와 공기유출구(20) 및 장애원인분석을 위한 공기펌프장치(27)를 갖고, 그 공기펌프장치는 펌프입구(29)와 펌프출구(28)를 가진 펌프 케이싱(26)내에 일체되어 있다. 콤팩트하고 설치 공간이 축소된 탱크 통풍장치의 실시를 달성하기 위해서는, 펌프 케이싱(26)은 공기유입구(19)와 동축으로 정렬된 펌프출구(28)에 의해 필터 케이싱(17)에 연결되고 스프링 탄성 고정소자(43)에 의해 필터 케이싱(17)에 고정되어 있다. 펌프출구(28)와 공기유입구(19) 사이의 이행부는 기밀적으로 밀폐되어있다.
Patent KR-19990087074-A (KR)
IPC: A61P37/04
Filed: 1997-02-20
Abstract: Disclosed in this patent document are synthetic, biologically active molecules referred to as fused pyrrolo[2,3-c]carbazole-6-ones. These molecules are represented by the following general formulae:   using the fused pyrrolo[2,3-c]carbazole-6-ones are also disclosed.
Patent KR-20000005409-A (KR)
Title: Aircraft detection system
Inventor: AUTY GLEN WILLIAM
IPC: G06T7/20
Filed: 1998-09-29
Abstract: PURPOSE: Disclosed is an aircraft detection system comprising an object detection system, an image acquisition system, and an analysis system. CONSTITUTION: An object detection system includes passive sensors (3) for receiving electromagnetic radiation from a moving object (28) and generating intensity signals representative of the received radiation, and a processing system for subtracting the intensity signals to obtain a differential signature representative of the position of the moving object. An image acquisition system includes at least one camera (7) for acquiring an image of at least part of a moving object, in response to a trigger signal, and an analysis system for processing the image to locate a region in the image including markings identifying the object and processing the region to extract the markings for optical recognition.