baber/WOPTO huggingface dataset:
Patent KR-20030042337-A (KR)
Title: Auto shear for the tail of coil
Inventor: JANG SEONG JAE
IPC: B21D43/00
Filed: 2001-11-22
Abstract: PURPOSE: An apparatus for automatically shearing the tail part of coiled coil is provided to shear defective strip generated in the tail part of the coil more neatly after performing coiling operation that is a final step of hot rolling. CONSTITUTION: The apparatus for automatically shearing the tail part of coiled coil comprises rails(25) arranged at one side part of a position where a coil transferred after being coiled in down coiler is rested; a transfer car(20) installed on the rails(25) so that the transfer car(20) is moved back and forth by a driving motor(22) mounted in the transfer car(20); hydraulic pump(26) and control box(21) mounted on the inner part of the transfer car(20); a vertical cylinder(27) fixed to the front of the transfer car(20) and ascended or descended by operation of the hydraulic pump(26) according to control signals of the control box(21); and a shearer main body(31) which is connected to the upper part of the vertical cylinder(27) by a vertically bent support(30) and formed in an inverted "U" shape, on one side of the inner part of which a fixed knife(32) is mounted, and on the other side of the inner part of which a moving knife(33) having tapered angle moved back and forth by a hydraulic cylinder through operation of the hydraulic pump(26) according to control signals of the control box(21) is mounted.
Patent KR-20030044616-A (KR)
Title: Lactoferricin gene and transformant expressing lactoferricin
Inventor: KANG DAE GYEONG
IPC: C07K14/79
Filed: 2001-11-30
Abstract: PURPOSE: A lactoferricin gene and escherichia coli (E. coli) transformed through transducing the lactoferricin gene are provided to make mass production of lactoferricin peptide with a high antimicrobial capacity by transducing the lactoferricin gene at the E. coli. CONSTITUTION: Lactoferricin bears an amino acid sequence presented at the sequence No. 3 where with the bovine amino acid sequence, the seventh glutamine is substituted by glutamic acid, and the tenth methionine is substituted by valine. A gene codes the lactoferricin, or has the base sequence presented at the sequence No. 2. The gene is fused with a magainin gene to make a fusion gene presented at the sequence No. 4, and a recombinant expression vector of pET-MLnX contains the fusion gene. The recombinant expression vector is selected from the group consisting of pET-ML1X, pET-ML2X, pET-ML3X and pET-ML4X where the fusion gene is repeated one to four times. E. coli is transformed by transducing the recombinant expression vector of pET-MLnX to form (BL21(DE3)£pET-MLnX|). The transformed E. coli is cultured, and β-D-isopropyl-D-thiogalactopyranoside (IPTG) is added to the cultured E. coli to produce lactoferricin.
Patent KR-20030045203-A (KR)
Title: Solar heat collect device
Inventor: CHOI JUNG MIN
IPC: F24J2/40
Filed: 2001-12-01
Abstract: PURPOSE: A solar heat collecting device, a solar heat collecting method and a recording medium are provided to achieve maximized efficiency of solar heat collection by adjusting the handle in accordance with the optimum installation angle set by the program. CONSTITUTION: A solar heat collecting device comprises a program execution unit(22) for executing the program for providing information related to sun based on the year average weather of a specific area; and a solar heat collecting plate direction control unit(24) for controlling change of the direction of the solar heat collecting plate in accordance with the information obtained by the program execution unit.
Patent KR-20030046705-A (KR)
Title: Raw material vaporization volume controlling device for modified chemical vapor deposition process
Inventor: LEE DONG HUI
IPC: C03B37/018
Filed: 2001-12-06
Abstract: PURPOSE: An apparatus for maintaining the vaporization amount of a starting material in the modified chemical vapor deposition is provided, to improve the quality of an optical fiber preform by maintaining the amount of the starting material to be vaporized to be uniform. CONSTITUTION: The apparatus(20) comprises a bubbler(21) changing the phase of a starting material from liquid to gas; a starting material tank(23) supplying the liquid starting material to the bubbler; a regulation part(25) which is installed between the bubbler and the starting material tank to control the flux of the starting material supplied into the bubbler; level sensors(31a, 31b) which are installed in the one side of the outer circumference of the bubbler to detect the upper limit and lowest limit of the starting material in the bubbler; and a control part(40) which generates a starting material supply signal if the lowest limit is detected at the level sensors and generates a starting material supply stopping signal if the upper limit is detected at the level sensors, thereby controlling the regulation part.
Patent KR-20030048522-A (KR)
Title: Apparatus of fluorescence endoscope, spectrum analysis and diagnosing method of cancer using the same
Inventor: PARK KYUNG SOON
IPC: A61B1/04
Filed: 2001-12-12
Abstract: PURPOSE: A fluorescence endoscopy and a spectrum analyzing apparatus and a method for diagnosing a cancer using the fluorescence endoscopy and the spectrum analyzing apparatus are provided to improve the accuracy of diagnosing a cancer by integrating a fluorescence endoscopy diagnotor and a fluorescence spectrum diagnotor onto an equipment. CONSTITUTION: A laser emitting unit(20) generates a laser. A white light generating unit(10) generates a white light. A filter(11) obtains a blue light by filtering the white light from the white light generating unit(10). A CCD(Charge-Coupled Device) camera unit(41) converts a light into an electrical signal. A computer and monitor(50) displays an image represented by the electrical signal. A spectrum analyzing and display unit(30) represents a spectrum generated by the laser in a target tissue. An endoscopy unit is inserted into a human body.
Patent KR-20030048771-A (KR)
Title: Seasoning composition for roasted meats containing Cacutus extracts
Inventor: SHIN YOUNG GIL
IPC: A23L27/00
Filed: 2001-12-13
Abstract: PURPOSE: Provided is a seasoning composition for roasted meat containing Cactus extracts, thereby improving meat quality, removing meaty smells and giving a savory taste. Therefore, it boosts one's appetite. CONSTITUTION: A seasoning composition for roasted meats is characterized by containing 1-20 wt.% of a Cactus leaf extract, 0.01-5 wt.% of a Cactus fruit extract, 0.1-2.0 wt.% of vitamin C and 0.5-5 wt.% of oligosaccharide.
Patent KR-20030049257-A (KR)
Title: Fine pattern forming method of semiconductor device
Inventor: BOK CHEOL GYU
IPC: H01L21/027
Filed: 2001-12-14
Abstract: PURPOSE: A method for manufacturing a fine-pattern of a semiconductor device is provided to be capable of improving the CD(Critical Dimension) uniformity of a photoresist pattern by flatly forming a multilayer BARC(Bottom Anti-Reflective Coating) using a spin coating process. CONSTITUTION: After sequentially forming the first and second organic anti-reflective coating on the upper portion of an etching object layer, a photoresist layer is coated on the entire surface of the resultant structure. At this time, the first and second organic anti-reflective coating are flatly formed by using a spin coating process, respectively. Then, a photoresist pattern is formed by exposing and developing the photoresist layer. Preferably, the spin coating process is carried out by multi-step.
Patent KR-20030053676-A (KR)
Title: Apparatus and method for controlling fan alarm
Inventor: YANG BONG JIN
IPC: H04Q1/02
Filed: 2001-12-22
Abstract: PURPOSE: An apparatus for controlling a fan alarm and a method therefor are provided to directly receive the fan alarm from each fan and control the fan alarm, in a subsystem alarm collecting unit. CONSTITUTION: Fans(310,320) circulate cooling fluid between an inside and an outside of a system, and maintain an internal temperature of the system at a uniform level. A subsystem alarm collecting unit(330) collects subscriber alarms, alarms of its hardware, and alarm data for indicating the fault state of the fans(310,320). An MP/DP(Main Processor/Device Processor) unit(340) receives alarm data about the fault state of the fans(310,320) from the subsystem alarm collecting unit(330), and notifies the alarm generation of the fans(310,320).
Patent KR-20030058069-A (KR)
Title: holding structure of working coil supporter in electric cooker
Inventor: JUNG SUN GI
IPC: A47J27/00
Filed: 2001-12-29
Abstract: PURPOSE: Assembling structure of a working coil support unit for an electric rice cooker is provided to reduce working process by assembling simply with modifying the assembling structure of the working coil support unit, and to increase the productivity by decreasing assembling hours. CONSTITUTION: An electric rice cooker comprises a working coil(40) for induction heating by applying current; a working coil base(20) installing the working coil; and a working coil support unit(30) combined with the working coil base to fix the working coil. An engagement unit is formed in the assembling portion of the working coil base and the working coil support unit, and composed of a hook groove(21a) integrally formed in the lower part of an edge(21) of the working coil base and a hook(31a) integrally formed in the end of a flange(31) of the working coil support unit. The working coil base is combined with the working coil support unit with the engagement unit.
Patent KR-20010072486-A (KR)
Title: 유체를 필터링 및 디스펜싱하기 위한 시스템
IPC: A61J7/00
Filed: 1999-07-16
Abstract: 향료, 식이성 미네랄들, 비타민들, 다른 영양제들, 또는 의약품들은 병의 목 또는 개방단부를 막도록 의도된 필터 조립체에서 디스펜싱될 수 있다. 캡은 캡의 상부로부터 연장하는 수동 밸브를 가지며, 대략 8-12미크론 사이의 다공도를 가지는 관형상의 활성탄 블록 필터(11)가 캡의 바닥부와 작동적으로 연결된다. 용해가능한 다공성 고체 요소(12)는 관형상의 카본 블록(11) 내에 배치되고, 카본 블록의 다공도보다 큰 다공도와, 대략 수크로오스의 1/100과 1/4 사이의 용해도를 가진다. 용해가능한 요소는 적어도 부분적으로 향료, 비타민, 식이성 미네랄, 영양제, 또는 의약품이다. 또한, 용해가능한 요소는 관형상이며, 압력 하에서는 물의 통과를 허용하지만 정압 상태 하에서는 물의 통과를 허용하지 않는 소수성 멤브레인(13)이 용해가능한 다공성 요소에 라이닝(lining)될 수 있다.
Patent KR-20010080065-A (KR)
IPC: H04N1/41
Filed: 1999-10-06
Abstract: 하나 이상의 관련 영역(ROI)을 포함하는 정지 화상의 인코드 및 전송하기 위한 방법 및 시스템에서, 주파수 영역으로 변환된 화상의 ROI 계수는, 바람직하게 웨이브렛 변환을 사용하여 인코드되고, 우선 전송되고 ROI 경계의 전송없이 수신기에 의해 디코드될 수 있다. 바람직한 실시예에서, ROI에 속하는 계수는 시프트되어 최소 ROI 계수는 최대 백그라운드 계수보다 크다. 그 후, 수신기는 반대 절차를 수행하여 ROI를 획득한다. 그 후, 수신기는 반대되는 절차를 수행하여, ROI 계수를 획득한다. 모양 정보를 전송하는 것을 회피하기 위하여 얼마나 많은 양의 계수가 시프트되는데 필요한가를 규정함으로서, 몇가지 이점이 달성된다. 그러므로, 모양 정보를 전송하는 것을 회피하고, 인코더 측에 모양을 인코딩하는 것을 회피할 수 있다. 게다가, 수신기 측에는 모양 디코더가 필요없고, 수신기에 대한 ROI 마스크를 발생시킬 필요가 없다. 또한, 또 다른 바람직한 실시예에서, 시프트(또는 스케일링 동작) 및 디코더 역시 회피된다.
Patent KR-20010080977-A (KR)
IPC: G01N21/83
Filed: 1999-10-29
Abstract: 본 발명은 수성 배합물 중의 폴리아스파르트산 (PASP) 및 그의 유도체의 정량적 측정 방법에 관한 것이다.
Patent KR-20010086054-A (KR)
IPC: G02B6/00
Filed: 1999-11-24
Abstract: 본 발명의 전면광(100) 및 반사형 액정 표시 장치는 점 형상 발광원(101)과, 상기 점 형상 발광원(101)으로부터의 빛이 입사하는 입사면(104a) 및 상기 입사한 빛이 출사하는 출사면(104b)을 구비한 도광체(104)로 구성되어 이루어지고, 점 형상 발광원(101)으로부터의 빛은 적어도 도광체(104)에 구비된 입사면(104a)에 입사될 때는 선 형상 발광 상태이다.  이에 의해, 점 형상 발광원(101)으로부터의 그림자나 모아레 무늬의 발생, 휘도의 명암 차이 등이 없고, 밝고 가격이 저렴하며, 소비 전력의 저감화를 실현하는 것이 가능한 전면광(100) 및 반사형 액정 표시 장치를 제공한다.
Patent KR-20010089529-A (KR)
IPC: C10G49/22
Filed: 2000-01-11
Abstract: 수소처리 중, 황화 수소 및 메탄, 에탄, 프로판, 부탄 그리고 펜탄과 같은 짧은 사슬의 탄화수소가 형성된다. 수소처리된 액체 탄화수소로부터 기체를 분리하는 것은 스트립퍼 및 플래쉬 드럼을 이용하여 달성된다. 고압의 증기 또는 질소는 상기 수소처리된 액체 탄화수소 물질과 접촉된다. 이 고압의 증기는 휘발성 물질, 즉 수소, 휘발성 탄화수소, 황화수소 등을 스트리핑시킨다. 기체상 흐름은 그 후 주로 물, 짧은 사슬의 탄화수소, 및 물속의 황화수소를 포함하는 응축가능물을 제거하기 위하여 분리되고 냉각된다. 응축가능물은 유리하게도 기화기로 보내지고, 그곳에서 탄화수소는 기화되고, 물은 기화기 온도를 조절하고 수소의 수율을 증가시키며, 그곳에서 황화수소는 생성된 합성 가스와 함께 산 기체 제거 과정으로 보내진다.
Patent KR-20020013520-A (KR)
IPC: C07H19/06
Filed: 2001-02-09
Abstract: 5-트리플루오로메틸-2,4-비스(트리메틸실릴옥시)피리미딘과 2-데옥시-α-D-에리트로-펜토푸라노실클로라이드유도체를 무용매하 또는 소량의 용매의 존재하에 반응시킴으로써, 1-(2'-데옥시-β-D-에리트로-펜토푸라노실)-5-트리플루오로메틸우라실유도체의 β체를 고선택률로 얻을 수 있다.
Patent KR-20010112938-A (KR)
IPC: H05B6/10
Filed: 2001-02-02
Abstract: 다중 스테이션 유도 열처리 시스템(10)은 그 축이 공통 가공물축에 대해 평행하고 가공물축으로부터 오프셋된 복수의 원통형 부품을 가진 금속 가공물을 열처리하는데 사용된다. 상기 열처리 시스템(10)은 가공물과 유도기 부품이 고정되었을 때 열처리하는 열처리 스테이션(31,32,33)을 포함한다. 상기 시스템(10)은 필수적으로 열처리되어야 하는 일부가 동축이 아니며 2개의 원통형 부품 사이에 삽입된 비대칭형 부품을 가진 크랭크 샤프트와 같은 가공물의 열처리에 특히 적합하다.
Patent KR-20030063543-A (KR)
Title: Switch connection control apparatus for P-T-MP call of Permanent Virtual Channel in Open Switching System and method thereof
Inventor: HONG SEONG BAEK
IPC: H04L12/28
Filed: 2002-01-22
Abstract: PURPOSE: A device of controlling a switch connection for a P-T-MP(Point To Multipoint) call of a fixed connection line in an open switching system is provided to perform PVC P-T-MP call connection setup/cancellation for a call control part of an upper controller and a control part of a lower switch, thereby using an interface for controlling the lower switch without any correction. CONSTITUTION: GSMP(General Switch Management Protocol) controllers(111,121) generate connection management messages for a P-T-MP call of a fixed connection line. A GSMP slave protocol processing module(131) decides types of the connection management messages. A switch connection control module(133) confirms a connected state of a switch according to the decided types of the messages, and creates/cancels routing tags for connecting the switch. Device controllers(141,143) connect the switch according to the routing tags. The GMSP controllers(111,121) generate messages showing connection setup, cancellation, verification, and changes for the P-T-MP call of the fixed connection line.
Patent KR-20030064978-A (KR)
Title: Plasma addressed lcd
Inventor: LEE JEONG HA
IPC: G02F1/1333
Filed: 2002-01-29
Abstract: PURPOSE: A plasma addressed liquid crystal display is provided to increase transmissivity and exclude the user of a backlight unit by forming a partition in matrix shape, thereby reducing power consumption. CONSTITUTION: A plurality of scan electrodes(2) and a plurality of sustain electrodes(3) are formed on a first glass substrate(1) in stripe shape, being separately arranged at first intervals. A plurality of pairs of the scan electrode and the sustain electrode are separately arranged at second intervals. A partition(4a) is formed on the first glass substrate in matrix shape to limit unit pixel spaces and arranged between the scan electrode and the sustain electrode forming one pair. R, G, and B fluorescent substances(12a,12b,12c) are applied on the first glass substrate including the scan electrodes and the sustain electrodes, and sides of the partition. A second glass substrate(5) are attached to the partition to seal the unit pixel spaces. A liquid crystal layer(7) is formed on the second glass substrate. A data electrode(8) is formed on the liquid crystal layer. A polarizing plate(10) is attached to the data electrode.
Patent KR-20030065068-A (KR)
Title: Mixture and one-body type purification apparatus with dielectric barrier structure
Inventor: CHOI CHANG SIK
IPC: B01D53/32
Filed: 2002-01-29
Abstract: PURPOSE: Provided is a hazardous gas purification apparatus having dielectric barrier structure for increasing hazardous gas treatment efficiency by increasing plasma discharge efficiency and photochemical reaction activities. CONSTITUTION: The apparatus includes a power supply(100), a dielectric structure carrier installed in a reactor and comprised of a plurality of honeycomb carrier cells(132), discharging electrodes(110) and corresponding electrodes(120) alternatively arranged installed in the honeycomb carrier cells(132), respectively, for causing discharge in the cells(132), wherein the cells(132) are coated with catalyst or photocatalyst.
Patent KR-20020064179-A (KR)
Inventor: KAWAKAMI ETSURO
IPC: G02B13/22
Filed: 2002-01-30
Abstract: PURPOSE: To obtain a compact photographic lens having high resolution and composed of small number of lenses. CONSTITUTION: This photogrpahic lens is composed of an aperture disphragm which is arranged nearest to an object side, and a 1st lens group, a 2nd lens group and a 3rd lens group which are arranged in this order from the objeect side. The 1st lens group is composed of a 1st lens (a positive lens) having positive refractive power and a 2nd lens (a negative lens) constituted to be joined with or separated from the 1st lens and having negative refractive power in this order from the object side. The 2nd lens group is composed only of a 3rd lens being a positive lens, at least one refractive surface of which is made aspherical. The 3rd lens group is composed only of a 4th lens being a negative lens, at least one refractive surface of which is made aspherical.
Patent KR-20020068953-A (KR)
Title: A washing and drying machine
Inventor: IOKU TATSUO
IPC: D06F58/24
Filed: 2002-02-21
Abstract: PURPOSE: To provide a washing and drying machine capable of selecting air- cooling and water-cooling dehumidifying means used for drying operation in accordance with the conditions of use. CONSTITUTION: In a washing and drying machine capable of drying the laundry by supplying hot air to a water tank 5 through a dehumidifying unit 14 during the drying operation, the dehumidifying unit 14 is composed of an air-cooling dehumidifying means 20 and a water-cooling dehumidifying means 24, each of which can be automatically and selectively operated according to ambient conditions.
Patent KR-20030073452-A (KR)
Title: Movable Apparatus For Purify Waste Water
Inventor: BYUN MOO WON
IPC: C02F3/00
Filed: 2002-03-11
Abstract: PURPOSE: Provided is a wastewater purifying apparatus being movable. CONSTITUTION: The apparatus comprises a container(10) having a space(11) therein and easily being movable, a multi-layered purification device(20) installed in the container(10), an inlet pipe(30) penetrating through the container(10) to externally extend to an upper portion of the container(10) for supplying wastewater to the upper portion of the purification device(20), and a drainage pipe(40) penetrating through the container(10) for draining treated water by the purification device(20) out.
Patent KR-20020076150-A (KR)
Inventor: KAWASAKI MASAAKI
IPC: C08K3/36
Filed: 2002-03-25
Abstract: PURPOSE: A rubber composition and a rubber product prepared by using the composition are provided, to improve the heat resistance and the weather resistance without deterioration of the fatigue resistance, the mechanical properties and the dynamic properties. CONSTITUTION: The rubber composition comprises 100 parts by weight of an ethylene-α -olefin-nonconjugated polyene copolymer having C3-C20; 5-90 parts by weight of fine-powdered silicic acid or silicate having a specific surface area of 5-500 m¬2/g (BET adsorption amount: ISO 5794/1, Annex D); 0.1-20 parts by weight of at least one kind of α, α-unsaturated carboxylic acid metal salt; 0.1-15 parts by weight of an organic peroxide; and optionally at least one antioxidizing agent selected from a sulfur-containing antioxidizing agent, a phenol-based antioxidizing agent and an amine-based antioxidizing agent, and/or sulfur.
Patent KR-20020033133-A (KR)
Inventor: KIM BYUNG HO
IPC: B60R1/08
Filed: 2002-03-25
Abstract: PURPOSE: A rear side monitoring apparatus and the installing method thereof are provided to display an image data of a rear side to a monitor installed at one side of a driver's seat by installing a sensing camera for monitoring the rear side of a vehicle. CONSTITUTION: A rear side monitoring apparatus(10) comprises a sensing camera(20) and a monitor(30). The sensing camera(20) is composed of a body, a fixing protrusion, a lens portion, an inputting portion and an outputting portion. The inputting portion and the outputting portion are contained at the body of the sensing camera(20). The protrusion is formed at a front side of the body, the lens portion takes a picture of a subject of the rear side and obtains an image data, and the image data is sent to the inputting portion. The inputting portion receives the image data and is sent to the outputting portion. The image data is displayed at the monitor(30).
Patent KR-20030039996-A (KR)
Inventor: PARK HA RYUNG
IPC: B65B13/18
Filed: 2002-04-15
Abstract: PURPOSE: A device for sealing inlets of rubber, vinyl, and paper bags for packing is provided to smoothly intercept the release of contents and the smell thereof with putting objects in rubber, vinyl, and paper bags and to easily hold and move by hands. CONSTITUTION: A device for sealing inlets of rubber, vinyl, and paper bags for packing is composed of first, second, and third hanging rods(30,40,50) serially connected to first and second sealing ropes(10,20) mutually coupled by a joint rope(50-1), a pressurizing ring separation preventing rod(80) formed at the upper edge of sealing ropes having hanging rods, flexible pressurizing rings(60,70,70-1) moved and varied to cover and pressurize a bent part of the upside of rubber, vinyl, and paper bags and to prevent contents in bags from being poured with having sealing ropes, an article indicating hook rope(90) connected with the upper edge of the pressurizing ring separation preventing rod, and an article indicating hook(100) formed at the upper edge of the article indicating hook rope to hang an article indicating and advertising plate(200).
Patent KR-20030084382-A (KR)
Title: Automatic gain controller in an optical receiver for receiving burst-mode signal
Inventor: DO HUI CHAN
IPC: H04B10/07
Filed: 2002-04-26
Abstract: PURPOSE: An AGC(Automatic Gain Control) device of a burst mode optical receiver is provided to generate packets and a reset signal initialized in a packet section by deciding an input signal, thereby exactly deciding whether a signal is generated with a quick response between the packets. CONSTITUTION: A TIA(Trans-Impedance Amplifier)(110) converts a current signal outputted from an optical detector(108) into a voltage signal, and supplies the voltage signal to a bottom level detection unit(120). The bottom level detection unit(120) detects a bottom level of an output from the TIA(110), and informs of whether a signal is generated with sections between sections. An AGC unit(130) generates an AGC signal based on the supplied bottom level, and automatically controls a gain of the signal. The AGC unit(130) inputs the bottom level, and generates a reset signal initialized in a section between the packets.
Patent KR-20020084414-A (KR)
Inventor: DIETZ ZACHARY
IPC: G06F3/038
Filed: 2002-04-29
Abstract: PURPOSE: A method for filtering image area and a method for minimizing grain effect are provided to detect the spatial filter in use is inappropriate for the orientation presently occurring. CONSTITUTION: Optical navigation upon grainy surfaces whose orientation is inclined at about 45 DEG to the X and Y axes of the navigation mechanism is enhanced by at first detect that a spatial filter in use is inappropriate for the orientation presently occurring, and at second, employ a different and more appropriate spatial filter subsequent to such detection. The shape of a correlation surface used in the navigation process is tested(93,94) for the presence of a ridge in the correlation surface. The generates control metrics whose filtered excursions are tracked by a control system that changes the spatial filter in use. The direction from which illumination arrives relative to the X and Y axes affects the range of angles that a filter is effective, by changing the apparent size and proportions of the highlights and shadows that are the perceived features ultimately navigated upon. Stable operation of the control system can be enhanced by ensuring overlap of the filters' ranges, and can be promoted by dynamically altering the direction from which illumination reaches the navigation surface, so that it corresponds to, or varies in relation with, the filter in use.