baber/WOPTO huggingface dataset:
Patent KR-20120044516-A (KR)
Inventor: PARK KYOUNG HYUN
IPC: G06Q50/00
Filed: 2010-10-28
Abstract: PURPOSE: A web page establishment and management method for multiple tenants are provided to offer independent web pages according to each tenant by providing independent page establishment functions to the tenants. CONSTITUTION: Page trees of a web page are stored in a database. The page trees are trees established for multiple tenants. The page tree is searched from the page tree of the web page previously stored in the data base according to the request of the web page(S201,S203). The web page is created from the searched page trees. The web page created from the searched page tree is provided(S217).
Patent KR-20120048884-A (KR)
Inventor: YNAG HYUN
IPC: F41J9/14
Filed: 2010-11-08
Abstract: 본 발명은 실제 영상을 이용한 실엽 시뮬레이션 장치에 관한 것으로, 특히 촬영된 사냥 영상을 이미지 프로세싱하여 각 영상 프레임에서 사냥 대상물의 좌표를 추출하는 대상 이미지 식별부; 상기 대상 이미지 식별부에서 추출된 상기 사냥 대상물의 좌표 정보를 각 해당 프레임 정보와 매핑하여 저장하는 데이터베이스; 상기 촬영된 사냥 영상을 스크린으로 출력하는 영상 표시부; 총기 격발시 상기 총기에서 방사되는 적외선에 의해 상기 스크린상에서 격발 지점의 좌표를 식별하는 적외선 센싱부; 및 상기 식별된 격발 지점의 좌표를 상기 추출된 사냥 대상물의 좌표 정보와 비교하여 명중 여부를 판단하는 명중 판단부;를 포함하는 것을 특징으로 한다.
Patent KR-20120049015-A (KR)
Title: Heating type ceramics humidifier without water tank
Inventor: KIM OK JOON
IPC: F24F13/28
Filed: 2010-11-08
Abstract: PURPOSE: A heating-type ceramic humidifier which does not have a water tank is provided to improve a humidification effect by guiding the discharge of steam using a heater. CONSTITUTION: A heating-type ceramic humidifier which does not have a water tank comprises a base unit(10), an evaporating body(40), a steam circulation unit, and a heating unit(70). The evaporating body is supported to the top of the base unit and absorbs water. The steam circulation unit circulates steam evaporated from the evaporating body. The heating unit applies heat to the steam circulation unit and guides the steam to be discharged to the steam circulation unit.
Patent KR-20120050114-A (KR)
Title: Liquid crystal display device and driving method of the same
Inventor: YANG HYO SANG
IPC: G09G3/36
Filed: 2010-11-10
Abstract: PURPOSE: A liquid crystal display apparatus which reduces an afterimage phenomenon and a driving method thereof are provided to eliminate an afterimage or dragging phenomenon while maintaining brightness to a proper level. CONSTITUTION: A display part(10) comprises a plurality of pixels. A gate line is respectively connected to a plurality of pixel columns. A data line is respectively connected to a plurality of pixel rows. A gate driving part(20) creates a plurality of gate signals. The gate driving part operates a switching device. A data driving part(30) applies data voltage to the pixel. A common voltage generation part(40) applies common voltage to the pixel. A turn-on period of the switching device includes first and second periods. A voltage value for generating a black image is stored in the pixel during the first period.
Patent KR-20120053195-A (KR)
Title: Laminated structure for a flexible circuit board having a improved heat resistance adhesive strength and manufacturing method the same
Inventor: JEON EUN WOOK
IPC: H05K3/18
Filed: 2010-11-17
Abstract: PURPOSE: A copper foil laminated structure for a flexible circuit board having improved heat resistant adhesive strength and a manufacturing method thereof are provided to prevent a copper oxide film from being formed on a polyimide interface corresponding to a base film by forming a specific buffer layer between a tie layer and a seed layer. CONSTITUTION: A polyimide film is used as a base film(1). An Ni-Cr(Nickel Chromium) alloy layer corresponding to a tie layer(2), an ITO layer corresponding to a buffer layer(3), and a seed layer(4) which sputters copper on a conductive layer, are laminated on the polyimide film. A copper plated layer(5) is laminated since electroplating is used on a laminated structure. Polyimide corresponding to the base film is surface-treated by RF plasma for improving an adhesive force in vacuum.
Patent KR-20120053747-A (KR)
Title: Three dimensional image display device and method of driving the same
Inventor: KIM JUNG WON
IPC: G02B27/22
Filed: 2010-11-18
Abstract: PURPOSE: A three-dimensional image display device and an operation method thereof are provided to improve 3D image display quality. CONSTITUTION: A display device(100) alternatively displays left-eye images(101,102) and right-eye images(101',102'). The display device displays an image which has a predetermined gradation level between the left-eye image and the right-eye image. White data voltage is applied to a first region in a current frame. Corrected white data voltage is applied to a second region. The corrected white data voltage is smaller than the white data voltage.
Patent KR-20120056003-A (KR)
Title: Device for heating fuel of diesel engine
Inventor: LEE WI YONG
IPC: F02M31/16
Filed: 2010-11-24
Abstract: PURPOSE: A device for heating fuel for a diesel engine is provided to improve the efficiency of the engine by inducing optimal combustion so that fuel costs are reduced. CONSTITUTION: A device for heating fuel for a diesel engine comprises spiral grooves on an inner surface of a cover(6) covering a fuel supply pipe. The spiral grooves are for a fuel supply pipe built in a spiral shape to adhere thereon. U-shaped grooves are formed along the length of an exhaust pipe so that the fuel supply pipe is closely connected to the outer surface of the exhaust pipe which is linked to a lower part of a manifold. The fuel supply pipe applies high heat to the fuel for the engine to obtain optimal combustion.
Patent KR-20120058739-A (KR)
Title: Touch sensing apparatus and mothod and record media recorded program realizing the same
Inventor: PARK YOUNG UN
IPC: G06F3/03
Filed: 2010-11-30
Abstract: PURPOSE: A touch sensing apparatus, method, and program recording medium therefor are provided to control an electronic apparatus according to an operation menu by sensing the pressure of a touch unit and the access of the touch unit. CONSTITUTION: A reference value detecting unit(141) detects reference values by extracting sensing values corresponding to the capacitance of a touch unit. A profile confirmation unit(142) analyzes a profile of the detected reference values. When the detected reference values are raised, a boundary value creation unit(143) creates first boundary values as first rates established by the detected reference values. The boundary value creation unit creates second boundary values as second rates established by the detected reference values.
Patent KR-20110063382-A (KR)
Title: Multi-rate system
Inventor: LEE KYE SAN
IPC: H04L27/26
Filed: 2010-12-03
Abstract: PURPOSE: A multi-rate system is provided to increase a cell coverage and a data transmission speed in a multi cell environment by applying soft handoff. CONSTITUTION: A data generating part(101) generates transmission data. An encoder/interleaver(103) encodes/interleaves the transmission data. A mapper(105) transforms output data of the encoder/interleaver. A pilot inserting unit(107) multiplexes output data and a pilot of the mapper. A user block allocator(109) allocates a user corresponding to each block. A coding unit(111) performs an coding operation on a data row of each user. A diffusion code generator(113) generates a diffusing code used in a data multiplexer(115). The data multiplexer multiplexes data for each user data block by block. A protecting interval inserter(117) inserts a protecting interval into output data of the data multiplexer.
Patent KR-20120062062-A (KR)
Title: 발등을 압박하는 신발의 악세사리
Inventor: I GYU SEONG
IPC: A43C11/24
Filed: 2010-12-06
Abstract: .
Patent KR-20120062419-A (KR)
Title: Building finishing composition
Inventor: YOO MYENG WOO
IPC: E04D3/362
Filed: 2010-12-06
Abstract: PURPOSE: A finishing material for a roof and an external wall of a building is provided to prevent foreign materials and moisture from flowing into the material by inserting a protrusion end into an insertion end. CONSTITUTION: A finishing material for a roof and an external wall of a building is composed as follows. An insertion end(11) is formed by bending one end of a finishing panel(10) in a longitudinal direction. A protrusion end(12) is formed by bending the other end of the finishing panel. A fastening end(13) is formed by horizontally bending the protrusion end and fastened to a fixing unit installed on a roof or external wall of a building. The protrusion end is inserted into the insertion end of the adjacent finishing panel.
Patent KR-20120065621-A (KR)
Title: Avalanche photodiode and method of manufacturing the same
Inventor: SUNG KI JUN
IPC: H01L31/107
Filed: 2010-12-13
Abstract: PURPOSE: An avalanche photodiode and a manufacturing method thereof are provided to efficiently reduce a size of the avalanche photodiode by minimizing an area for forming an N type electrode on the rear of an epitaxial wafer. CONSTITUTION: An epitaxial wafer including an absorbing layer(201), a grading layer(202), and an amplifying layer(204) is formed on a substrate(200). An insulation layer(205) is formed on the epitaxial wafer. One or more holes are formed from the insulation layer to the preset depth of the substrate. A tapered hole is formed by etching the upper side of the hole. An insulation layer(208) is formed on the walls of the hole and the tapered hole. A metal seed layer(209) is formed on the insulation layer.
Patent KR-20120067546-A (KR)
Title: Auto operating method for node movable on the water
Inventor: KIM CHANG HWA
IPC: G01N33/18
Filed: 2010-12-16
Abstract: PURPOSE: An automatic driving method of a movable water node is provided to collect underwater information from a wide region by transferring the water node to a desired underwater position. CONSTITUTION: A wireless communication unit(110) performs wireless communications with a ground administrator server. A GSP module(120) measures a current GPS coordinate of a movable water node(100). A direction detector(130) detects a transfer direction of the water node. A controller(140) calculates a distance and a direction to a destination GPS coordinate. A driving part(150) drives the water node for transferring and rotating the water node. A collection information collecting sensor(160) collects underwater information. A mapping part(170) maps the current GPS coordinate and the destination GPS coordinate on an electronic map.
Patent KR-20120067692-A (KR)
Title: Apparatus for sensing droop
Inventor: YUN JU YOUNG
IPC: G01B11/16
Filed: 2010-12-16
Abstract: PURPOSE: A drooping sensing device is provided to prevent all kinds of process issues generated by deformation of parts by monitoring the parts in which drooping is generated as time goes by on a real time basis. CONSTITUTION: A drooping sensing device comprises irradiation units(110a,110b,110c,110d) and sensing units(120a,120b,120c,120d), and a control unit. The irradiation units are mounted in a first lateral surface among four lateral surfaces, thereby irradiating lights or ultrasonic waves to a direction parallel with upper and lower surfaces. The sensing units are mounted in a second lateral surface facing to the first lateral surface, thereby sensing the lights or ultrasonic waves irradiated from the irradiation units. The control unit controls an on/off switching of the irradiation units and decides whether the parts are drooped or not based on whether the sensing units sense the lights or ultrasonic waves irradiated from the irradiation units.
Patent KR-20120068124-A (KR)
Title: Shoe pocket processing method and jig of piston for swash plate type compressor
Inventor: LEE GEON HO
IPC: B24B19/00
Filed: 2010-12-17
Abstract: PURPOSE: A method for processing a shoe pocket of a piston for a swash type compressor and a processing jig are provided to prevent partial deformation, and to improve durability of abrasion. CONSTITUTION: A method for processing a shoe pocket of a piston for a swash type compressor comprises following steps. The shoe pocket(300) is processed in the piston(14). The processed shoe pocket is grinded. Rough grinding and finishing are successively performed in order to process the shoe pocket. The processed shoe pocket is grinded by a processing jig having the same sectional form of shoe with pressurizing a shoe mounting surface at pre-determined pressure.
Patent KR-20120069931-A (KR)
Title: Torque sensor of steering system
Inventor: KANG MIN CHUL
IPC: G01L3/10
Filed: 2010-12-21
Abstract: PURPOSE: A torque sensor of a steering system is provided to form a stator into a ring shape, thereby being utilized for a vehicle in which a multi-turn steering handle angle is required. CONSTITUTION: A torque sensor of a steering system comprises a rotor(100), stators(200,300), a hall IC(400), and a collector(500). The stator is arranged to be spaced from the rotor. The hall IC detects magnetic fields generated in the rotor and stator. The collector is arranged between the stator and hall IC. The rotor comprises a magnet holder and a magnet. The stator is formed into a ring shape and fixed to the stator holder. A plurality of stator tooth(220,320) is formed in a position facing to the magnet.
Patent KR-20120070221-A (KR)
Title: Stereoscopic image display device
Inventor: LEE SUN HWA
IPC: G02B30/25
Filed: 2010-12-21
Abstract: PURPOSE: A three-dimensional image displaying device is provided to perform sub-pixel rendering about an image signal and to reduce degradation of resolution. CONSTITUTION: A patterned retarder divides an image into a left-eye image and a right-eye image in a line-by-line mode. The image is displayed on a liquid crystal panel. A rendering unit(RND) renders an image signal in order to form one pixel by reflecting gray data of a neighboring sub pixel. One sub-pixel is included in a quad type RGBW pixel. A neighboring sub pixel is located to a horizontal direction and a vertical direction based on one sub-pixel.
Patent KR-20120071483-A (KR)
Title: System and method of providing broadcast augmented reality advertisement service based on media id junction
Inventor: YU HONG YEON
IPC: H04N21/2343
Filed: 2010-12-23
Abstract: PURPOSE: A broadcasting AR advertisement service system and a method thereof are provided to supply customized bi-directional broadcasting AR advertisement to a user mobile terminal. CONSTITUTION: A media ID generating and matching unit(142) generates a media ID LUT(LookUp Table) from a broadcasting content. The media ID generating and matching unit identifies a channel of the broadcasting content by comparison of a first media ID lockup table and a second media ID lockup table. An advertisement unit(101) transmits AR advertisement data information to a user terminal.
Patent KR-20120073634-A (KR)
Title: Method for manufacturing formable hot-rolled steel having excellent anti-aging property and the hot-rolled steel by the same method
Inventor: KIM JAE IK
IPC: C21D8/02
Filed: 2010-12-27
Abstract: PURPOSE: A method for manufacturing a high-strength hot rolled steel sheet and a hot rolled steel sheet manufactured by the same are provided to obtain a hot rolled steel sheet with improved workability, corrosion resistance, and platability, which is applicable to electronic appliances, containers, and vehicles. CONSTITUTION: A method for manufacturing a high-strength hot rolled steel sheet comprises a step of shot blasting on the surface of a hot rolled steel sheet using shot balls of 0.1-0.4mm at a shot speed of 40-65m/sec. The hot rolled steel sheet comprises carbon of 0.001-0.006 weight%, manganese of 0.5-1.5 weight%, phosphorus of 0.01-0.06 weight%, sulfur of 0.020 weight% or less, aluminum of 0.01-0.07 weight%, nitrogen of 0.001-0.004 weight%, boron of 0.0005-0.0020 weight%, cobalt of 0.01-0.05 weight%, and iron and inevitable impurities of the remaining amount.
Patent KR-20120074661-A (KR)
Title: The organic liquid manure with agricultural by-products for tomato in fertigated cultivation and manufacturing method of the same
Inventor: JEON JONG OCK
IPC: A01C21/00
Filed: 2010-12-28
Abstract: PURPOSE: An organic liquid fertilizer for tomato fertigation using agricultural by-products and a manufacturing method thereof are provided to have an excellent rearing effect by including soybean meal and rice bran at a fixed rate. CONSTITUTION: A manufacturing method of an organic liquid fertilizer for tomato fertigation comprises the following steps: manufacturing a mixture by mixing 45-55 wt% of soybean cake with 45-55 weight% of rice bran; diluting the mixture 4 times with water; and anaerobically fermenting the diluted mixture for 40-90 days at a shaded place. The soybean cake and rice bran are mixed at a rate of 1:1. The organic liquid fertilizer for the tomato fertigation is fermented anaerobically for 80 days. The liquid fertilizer is diluted 10-20 times with water and is fertilized in tomatoes.
Patent KR-20120077193-A (KR)
Title: Method for analyzing concentrations of carbamate, bicarbonate, carbonate in the carbon dioxide absorbent
Inventor: YOON YEO IL
IPC: G01N9/24
Filed: 2010-12-30
Abstract: PURPOSE: A method for analyzing concentrations of carbamate, the bicarbonate, and the carbonate in a carbon dioxide absorbent is provided to obtain a speciation distribution according to a sort of an amine, a concentration of an amine solution, a reacting temperature, and an absorption amount of carbon dioxide and to decide a reacting mechanism of the amine solution under a specific condition. CONSTITUTION: A method for analyzing concentrations of carbamate, the bicarbonate, and the carbonate in a carbon dioxide absorbent is as follows. An absorbent absorbing the carbon dioxide of a specific amount is prepared. The absorbent is dissolved in a D2O and manufactures a sample. Concentrations of carbamate, the bicarbonate, and the carbonate in the sample are analyzed by using a nuclear magnetic resonance analyzing device. The absorbent is selected from a group being composed of the alkanolamine, annular amine, chain type amine, amino acid salt and alkaline salt. The absorbent is MDEA(Methyl diethanol amine) or AMP(adenosine monophosphate).
Patent KR-20120077617-A (KR)
Title: Door assembly and food waste disposer comprising the same
Inventor: PARK MYUNG JIN
IPC: B65F1/16
Filed: 2010-12-30
Abstract: PURPOSE: A door assembly and a food waste disposing machine with the same are provided to maintain tight sealing and to facilitate opening and closing of a rotary door assembly with less power of users. CONSTITUTION: A door assembly comprises a lever bar(620), a rod(640), and a hollow rotator. The lever bar reciprocates. One side of the rod is interlocked with the lever bar and a fin is located in the other side thereof. The hollow rotator is interlocked with the pin to rotate. A rotary shaft is located in the center of the rod and the fin is radially moved around the rotary shaft according to the reciprocating motion of the lever bar so that the hollow rotator can be rotated.
Patent KR-20120077705-A (KR)
Title: Polypropylene resin composition for foaming extruding and a foam prepared using the same
Inventor: MAENG YOUNG JAE
IPC: C08F10/06
Filed: 2010-12-31
Abstract: PURPOSE: A polypropylene resin composition for extrusion foaming and a foaming body manufactured by using the same are provided to have high molten strength, thereby facilitating cell density control of the foaming body. CONSTITUTION: A polypropylene resin composition for extrusion foaming includes 5-40 wt% of a foaming agent based on 100 wt% of propylene random copolymer including 0.1-10 wt% of ethylene. The melt index of the polypropylene resin composition is 0.1-10 g/10 minutes, and the distribution of molecular weight is 6 or greater. The molten strength of the polypropylene resin composition is 50mN or greater. The foaming agent is one or more of butane, propane, and carbon dioxide. The polypropylene resin composition additionally includes 0.01-5.0 wt% of a foam nucleating agent. The foam nucleating agent is one or more of talc, barium stearate, calcium stearate, silica, sodium bicarbonate, and potassium bicarbonate.
Patent KR-20100108505-A (KR)
Title: New cycloalkene derivatives and organic electronic diode using the same
Inventor: JANG HYE YOUNG
IPC: H01L51/50
Filed: 2010-01-20
Abstract: PURPOSE: A cycloalkene derivative and an organic electronic diode including thereof are provided to use the cycloalkene derivative as a hole transporting agent, an electron transporting agent, and a luminescent material in the organic electronic diode. CONSTITUTION: A cycloalkene derivative is marked with chemical formula 1. In the chemical formula 1, R1 is a substituent marked with -[Ar]m-X, and p is an integer of 0~3. Ar is either a substituted or non-substituted C6~C50 arylene group, or a substituted or non-substituted heterocyclic group including N,O, or S as a hetero atom.
Patent KR-20100031542-A (KR)
Title: Human mammary prosthetic support and method of implanting
Inventor: LAURYSSEN GARY PIERRE
IPC: A61B17/00
Filed: 2008-06-24
Abstract: A human mammary prosthetic support (5) is disclosed which comprises a continuous sheet of biocompatible mesh formed into the shape of a cup, securable between the skin and glandular structure of a human breast with an aperture (67) through which the nipple-areola structure is beatable. Also disclosed is a human mammary prosthetic support which comprises a continuous sheet of biocompatible mesh formed into a generally U-shaped formation, and methods to implant either of the supports into a human body.
Patent KR-20110046387-A (KR)
Title: 광학 필름의 반송 방법 및 이를 이용한 장치
IPC: B65H5/02
Filed: 2008-08-19
Abstract: 본 발명은, 띠 형상의 광학 필름(F)을 반송하는 과정에서, 당해 광학 필름(F)을 소정 길이의 낱장으로 절단한다.  그 후, 다음 절단 부위가 절단 작용 위치에 도달할 때까지 소정 길이의 광학 필름(F)을 송출하면서, 절단 후의 광학 필름(F)을 간헐적으로 반송하는 동시에, 당해 간헐 반송 과정의 선두에 있는 광학 필름(F)의 후단부가, 다음 간헐 반송시에 당해 간헐 반송 과정을 넘어 연속 반송 과정으로 송출된다.  이때, 당해 간헐 반송 과정의 하류측으로 이어지는 광학 필름(F)을 연속적으로 반송하는 연속 반송 과정에, 절단 후의 광학 필름(F)을 전달하도록 구성한다.
Patent KR-20100114073-A (KR)
Inventor: SCHULTZ MARK ALAN
IPC: H04B17/40
Filed: 2008-01-16
Abstract: 중간 주파수 이득, 무선 주파수 이득을 조정하기 위한 상태 머신 컨트롤러, 및 베이스밴드 복조기를 포함하는 자동 이득 제어 회로가 기술되며, 여기서, 베이스밴드 복조기는, 상태 머신 컨트롤러의 상태에 관한 정보를 상태 머신 컨트롤러로부터 수신하며, 또한, 상태 머신 컨트롤러는, 베이스밴드 복조기로부터 상관 정보를 수신한다.  또한, 신호를 탐지하는 단계, 베이스밴드 복조기에 상태 머신 컨트롤러의 정보를 제공하는 단계, 무선 주파수 이득을 감소시키는 단계, 중간 주파수 이득을 감소시키는 단계, 및 베이스밴드 복조기로부터 상관 정보를 수신하는 단계를 포함하는 방법이 기술되어 있다.
Patent KR-20100121619-A (KR)
Inventor: GOUARDES ERIC
IPC: C03C17/36
Filed: 2009-02-25
Abstract: 본 발명의 주제는 태양 복사선에 작용하는 박막 다층 코팅을 구비하고 굽힘이나 강화 처리와 같은 열 처리 후 10% 보다 큰 광 투과율과 50% 보다 작은 방사율을 가지는 적어도 하나의 유리 시트를 포함하는 투명 유리 기판으로서, 상기 다층 코팅은, - 약 5nm 내지 약 35nm의 두께를 가지는 니오븀(Nb)에 기초한 기능층과; - 상기 기능층 위에 상기 유리 기판에 대해 배치되며 Ti, Mo, B, Al 또는 이들 원소들 중 적어도 하나를 포함하는 합금으로 형성된 그룹으로부터 선택된 다른 물질의 적어도 하나의 층으로서 상기 층은 약 1nm 내지 약 5nm의 두께를 가지는 층을 포함하는 것을 특징으로 하는 투명 유리 기판에 있다. 본 발명은 또한 이러한 기판을 포함하는 단일 창유리 또는 이중 창유리에 관한 것이다.
Patent KR-20100113629-A (KR)
Inventor: BACHAND CAROL
IPC: A61K31/4178
Filed: 2008-02-13
Abstract: 본 개시내용은 하기 화학식 I의 화합물, 조성물, 및 C형 간염 바이러스 (HCV) 감염의 치료 방법에 관한 것이다.  또한, 이러한 화합물을 함유하는 제약 조성물, 및 HCV 감염의 치료에서의 이들 화합물의 사용 방법이 개시된다. 
<화학식 I>
Patent KR-20100123773-A (KR)
Inventor: IMAI TAKUYA
IPC: H01M4/90
Filed: 2009-03-23
Abstract: 본 발명의 목적은, 산성 전해질 중이나 고전위에서 부식하지 않고, 내구성이 우수하고, 높은 산소 환원능을 갖는 연료 전지용 촉매의 제조 방법을 제공하는 것이다.  본 발명의 연료 전지용 촉매의 제조 방법은, 전이 금속의 탄질화물을, 산소를 포함하는 불활성 가스 중에서 가열하는 공정 (I)과, 상기 공정 (I)에서 얻어진 생성물을, 실질적으로 산소를 포함하지 않는 불활성 가스 중에서 가열하는 공정 (II)를 포함하는 것을 특징으로 한다.
Patent KR-20110004427-A (KR)
Inventor: BALRAJ SAJITH
IPC: G06F9/44
Filed: 2009-04-07
Abstract: 태양은 컨텐츠 전달을 커스터마이즈하는 능력을 제공하기 위한 시스템 및 방법과 관련한다.     디바이스는 다중의 프레젠테이션을 캐싱할 수 있다.     디바이스는 가입 서비스의 개시시에 캐시 깊이를 구축할 수 있다.     디바이스는 캐시 깊이를 선택하도록 인터페이스를 제공할 수 있다.     캐시 깊이는 디바이스가 주어진 시간에 디바이스 상에서 유지하는 프레젠테이션의 수일 수 있다.