baber/WOPTO huggingface dataset:
Patent KR-20130079694-A (KR)
Title: Apparatus and method for measureing velocity vector imaging of blood vessel
Inventor: HA JONG WON
IPC: A61B5/055
Filed: 2012-01-03
Abstract: PURPOSE: A method and apparatus for estimating a motion in a blood vessel image are provided to find out the wall of an aorta from a multi-detector computed tomography (MDCT) image and a magnetic resonance (MR) image photographed along a cardiac cycle and to track the motion of the aorta according to time sequence. CONSTITUTION: A method for estimating a motion in a blood vessel image includes an image detecting step (100) of detecting a multi-detector computed tomography (MDCT) image or an image resonance image (MRI) with being triggered by an electrocardiogram signal; an increasing step (150) of increasing contrast with magnifying the image; an estimating step (200) of estimating the segment of an aorta; an image scaling step (250) of adjusting the image with median filtering; an aorta wall estimating step (300) of estimating the wall of the aorta in the image from the step (250); a motion tracking step (355) of detecting the motion of the wall; and a velocity mapping step (400) of mapping a velocity in the result from the step (355).
Patent KR-20130081889-A (KR)
Title: Double heating type heater
Inventor: MOON YEONG JO
IPC: F23B60/00
Filed: 2012-01-10
Abstract: PURPOSE: A double heating stove is provided to relieve the concern that a stovepipe extended to the outside of a smoke outlet might be blocked, because pyroligneous liquor and fuel ash included in the smoke emitted after combustion are not directly discharged through a stovepipe and remain in a combustion case in the upper part. CONSTITUTION: A double heating stove comprises a lower combustion case (10), a box for collecting fuel ash (20), a supporting board (30), an upper combustion case (40), a smoke outlet (50), a connector (60) and a support stand (70). The smoke outlet is formed to be connected to the outside in the shape of a pipe in a vertical direction so that smoke can be ejected through a discharging hole (44) in the upper combustion case. The connector is installed in the shape of a pipe behind the lower and upper combustion cases, which are separately installed, to be connected to the lower and upper combustion cases. The support stand is installed in front of the lower and upper combustion cases, which are separately installed, to be connected to the lower and upper combustion cases and mutually fixes the cases.
Patent KR-20130083707-A (KR)
Title: Apparatus and method for searching personalized contents using a mobile terminal
Inventor: PARK SUNG BAE
IPC: G06F17/30
Filed: 2012-01-13
Abstract: PURPOSE: An individualized contents search method capable of using a mobile terminal and a contents search system performing thereof are provided to recommend the contents in which the topic is similar to the topic included in the corresponding place, even if the place is not close to the visited place, to a user, thereby providing the individualized contents which is more suitable to an interest area of the user. CONSTITUTION: A search word indicating a place corresponding to the location information of a mobile terminal is automatically produced (83). The contents related to the place corresponding to the location information of the mobile terminal are searched by using the search word (84). The search word is automatically produced by extracting the search word indicating the place corresponding to the location information of the mobile terminal among the search words indicating the places. The location log is received from the mobile terminal. The search word indicating the place corresponding to the location information is automatically produced from the location information history of the location log. [Reference numerals] (81) The location of a mobile device is spotted using a GPS; (82) A web content searching application unit generates a web content searching request including the location of the mobile device and transmits the request to a web content searching server; (83) The server extracts the location of the mobile device from the web content searching request and searches for the search words indicating the places corresponding to the mobile device's location; (84) Using the searched words, the server searches contents related to the location of the mobile device; (85) The server creates a list of the searched web content and transmits the list to the mobile device; (86) The list is displayed on the display unit of the mobile device; (AA) Start; (BB) End
Patent KR-20120087846-A (KR)
Title: Aluminum alloy plate for printing plate and manufacturing method thereof
Inventor: KOBAYASHI KAZUNORI
IPC: C22F1/04
Filed: 2012-01-27
Abstract: PURPOSE: An aluminum alloy sheet for a print plate and a manufacturing method thereof are provided to control the generation of a un-etched portion and obtain the uniformity of a surface after an electrolytic roughening treatment. CONSTITUTION: An aluminum alloy sheet for a print plate contains 0.03 to 0.15wt.% of Si, 0.2 to 0.6wt.% of Fe, 0.005 to 0.05wt.% of Ti, and 0.005 to 0.10wt.% of Ni. An aluminum alloy sheet contains at least one being selected among 0.005~0.05wt.% of Mn, Mg 0.005~0.05wt.% of Mg, and 0.005~0.05wt.% of Cu and the rest of the aluminum alloy sheet is composed of Al and inevitable impurities. The aluminum alloy sheet is manufactured by a cold rolling having no intermediate annealing.
Patent KR-20130088306-A (KR)
Title: Assembling type cube-block for chilren
Inventor: LEE JONG GU
IPC: A63H33/08
Filed: 2012-01-31
Abstract: PURPOSE: A prefabricated cube block for children is provided to improve children's creativity and power of concentration. CONSTITUTION: A prefabricated cube block for children comprises a hexahedral cube block (110), coupling holes which are formed on the surface of the cube block to face the edge of the cube block, and a coupler (120) which is formed with a pair of fixing pieces on both ends of the body thereof to combine the cube blocks by inserting a fixed plate into the coupling holes.
Patent KR-20130048130-A (KR)
Title: Apparatus and method for encoding/decoding using virtual view synthesis prediction
Inventor: LEE JIN YOUNG
IPC: H04N13/00
Filed: 2012-02-01
Abstract: PURPOSE: An encoding/decoding device using virtual view synthesis prediction and an encoding/decoding method thereof are provided to generate a synthesis image of a virtual view by the synthesis of the surrounding views and to encode the blocks using the synthesis image. CONSTITUTION: A synthesis image generating unit(201) generates a synthesis image of a virtual view by synthesizing the first images of the surrounding views. An encoding mode determining unit(202) determines each encoding mode of one or more blocks composing of a coding unit from among the blocks included in a second image of a current view. An image encoding unit(203) encodes the blocks based on the encoding mode. The encoding mode includes the encoding modes related to the virtual view synthesis prediction. [Reference numerals] (102) Decoding device; (201) Synthesis image generating unit; (202) Encoding mode determining unit; (203) Image encoding unit; (204) Flag setting unit; (AA) Bit stream
Patent KR-20130092015-A (KR)
Title: A packaging method for the salted alaska pollack roe under vacuum condition using by retort pouched film
Inventor: JO SOON YOUNG
IPC: A23L17/30
Filed: 2012-02-09
Abstract: PURPOSE: A vacuum packaging method of salt-fermented pollack roe using a retort pouch film is provided to improve the storage quality of salt-fermented pollack roe packed with an aluminum-containing retort pouch. CONSTITUTION: Pollack roe is collected and washed with water. The washed pollack roe is soaked in brine after the moisture is removed. The moisture and impurities are removed from salted pollack roe. A wet spice is added to the salted pollack roe. The wet spice added pollack roe is seasoned with a dry spice and fermented. The salt-fermented pollack roe is packed with a vacuumed retort pouch film. The brine comprises 1- 20 weight% of salt, 1-10 weight% of sugar, 1-50 weight% of water, and 0.01-5 weight% of rice wine, for 100 weight% of pollack roe. The dry spice comprises 1-10 weight% of red pepper powder, and 0.01-5 weight% of sugar, for 100 weight% of pollack roe. The wet spice comprises 1-7 weight% of red pepper powder, 0.01-5 weight% of Miwon, 1-10 weight% of garlic, 1-10 weight% of starch syrup, and 1-15 weight% of water, for 100 weight% of pollack roe.
Patent KR-20130092261-A (KR)
Title: Electric motor integrated axle
Inventor: KIM JIN WAN
IPC: B60L11/18
Filed: 2012-02-10
Abstract: PURPOSE: An axle integrated with a motor is provided to improve the performance of a driving system by improving the driving transmission efficiency of a motor by using a first and a second reduction device. CONSTITUTION: An electric motor is installed at one side of a body frame. The electric motor includes a rotation driving shaft. Hub assembly (50) is installed outside the electric motor. The hub assembly rotates a wheel with driving power transmitted from the rotation driving shaft. Break assembly (60) is installed between the electric motor and the hub assembly.
Patent KR-20130130140-A (KR)
Inventor: RYU SUNG WON
IPC: B25B11/02
Filed: 2012-02-09
Abstract: The present invention relates to a jig for assembling a window roller. The characteristics of the composition of the jig are as follows: on the center of the upper surface of a base frame (6a) in a rectangular shape, a seating block (6b) is mounted and fixed with a smaller size than a seating surface (51a) of an out case (51). A coupling hole (61) is formed on the bottom of the base frame (6a) in order to be mounted on the top of an automatic rotating device (not included in the drawing). A supporting block (6c) has a supporting protrusion (62) in order to support the insertion of a rectangular hole (51b) formed in the center of the seating surface (51a) of the out case (51) into the seating block (6b), and is coupled and fixed to the center of the upper surface of the base frame (6a). A pair of jaws (6d, 6d') is installed to support the out case (51) at both sides of the seating block (6b). One end of the jaws (6d, 6d') is mounted on the base frame (6a) in order to be rotated by a hinge shaft (63) while the other end is mounted with a tensile spring (65) as a combining member (64). Therefore, the seating and separation of the out case (51) can be accurately and smoothly performed. The jig prepared by the present invention can maximize productivity and minimize assembling defects by rapidly and accurately assembling a window roller (5); maximize the effect of cost reduction by saving labor; and automate the assembly of a window roller.
Patent KR-20130009587-A (KR)
Title: Semiconductor memory devices
Inventor: YANO MASARU
IPC: H01L27/115
Filed: 2012-02-17
Abstract: PURPOSE: A semiconductor memory device is provided to rapidly charge or discharge a bias in a bit line. CONSTITUTION: A memory array(100) includes a plurality of memory cells arranged in matrix. An address register(120) receives address data from an input and output buffer(110). A data register(130) stores input data and output data. A controller(140) provides a control signal according to an external control signal. A page buffer/sensor circuit(160) stores data read from the page selected by a word line selection circuit(150). [Reference numerals] (10) Flash memory; (110) Input and output buffer; (120) Address register; (130) Data register; (140) Controller; (150) Word line selection circuit; (160) Page buffer/sensor circuit; (170) Row selection circuit; (180) Internal voltage generating circuit
Patent KR-20130096506-A (KR)
Inventor: KIM JUNG IL
IPC: B44C1/00
Filed: 2012-02-22
Abstract: 본 발명은 음식용구 손잡이의 문양 형성방법에 관한 것으로, 보다 상세하게는 스테인리스 재질의 음식용구 손잡이에 자개 문양을 형성함으로써, 디자인적인 가치를 향상시킬 수 있는 음식용구 손잡이의 문양 형성방법에 관한 것이다. 
본 발명은, 금속 재질의 음식용구 손잡이의 일 영역에 소정의 문양 형상을 나타내는 홈을 형성하는 제1 단계; 상기 홈의 형상에 상응되는 자개를 상기 홈에 끼워 넣는 제2 단계; 상기 자개가 끼워진 상기 홈에 에폭시와 투명 수지를 주입하고 건조시켜 상기 자개 상부에 코팅층을 형성하는 제3 단계; 및 상기 코팅층을 연마하는 제4 단계를 포함하는 것을 특징으로 하는 음식용구 손잡이의 문양 형성방법을 제공한다.
Patent KR-20130097865-A (KR)
Title: Carrier of bycicle
Inventor: SHIN JUNG IN
IPC: B62H1/04
Filed: 2012-02-27
Abstract: PURPOSE: A bicycle carrier is provided to equip a loading part for loading an article, a separable locking part, and a frame part, thereby implementing a function as a lock of a bicycle in case the operation of the bicycle is stopped or terminated. CONSTITUTION: A bicycle carrier comprises: a loading part (10), which is combined with a bicycle body, serves the loading space for articles; a locking part (20), which is separably combined with the loading part, serves a function as a lock; and a frame part (30). The frame part is formed while surrounding the load part and separably combined with the loading part. The frame part is combined with the locking part after separating from the loading part so that the locking function capable of tying the bicycle to the external structure is served.
Patent KR-20130101302-A (KR)
Inventor: LEE GI CHUN
IPC: A47J43/07
Filed: 2012-03-05
Abstract: 본 발명은 피가공물을 자동으로 교반할 수 있는 자동 교반장치에 관한 것이다. 본 발명의 실시예에 따른 자동 교반장치는 피가공물이 수용되는 용기의 상부에 안착되는 본체, 상기 본체의 하부로 돌출되는 구동축과 상기 구동축을 회전시키는 모터를 포함하는 구동부, 상기 구동축에 탈착 가능하게 결합되어 상기 용기에 수용된 피가공물을 교반하는 교반날개, 상기 본체의 내부에 수용되어 상기 구동부에 전원을 공급하는 배터리, 및 상기 구동부를 제어하는 제어모듈을 포함한다. 따라서, 배터리가 내장되어 외부의 전원이 설치되지 않은 장소에서도 사용이 가능하며, 피가공물의 종류에 따라 그에 적합한 교반을 용이하게 수행할 수 있다.
Patent KR-20130105041-A (KR)
Title: Functional food compositon for reducing body weight and improving metabolic syndrome and manufacturing method of the same
Inventor: SHIM SANG HEE
IPC: A23L1/30
Filed: 2012-03-16
Abstract: PURPOSE: A functional food composition and a manufacturing method thereof are provided to have weight loss effects and treat metabolic diseases. CONSTITUTION: A manufacturing method of functional food composition comprises the following steps: adding 100 parts by weight of food composition to 100 parts by weight of black sugar, mixing and putting the same into a jar; and fermenting the food composition in a fermentation room which kept 8 deg. Celsius for 100 days. The food composition comprises green vegetables, edible roots, fruit vegetables, wild edible greens, fruits, and mushrooms. The green vegetables comprise Chinese cabbages, sauerkraut, radish leaves, crown daisies, onions, and garlic. The edible roots comprise radishes, carrots, xanthium strumarium, lotus roots, dioscorea japonica, and sweet potatoes. The fruit vegetables comprise green chili, tomatoes, cucumbers, eggplants, strawberries, and paprika. The wild edible green comprises three kinds of edible mounting herbs including balloon flower, mountain herb, and Artemisia dubia wall. The fruits comprise apple, pears, grapes, and walnuts. The mushrooms comprise Pleurotus ostreatus, tree ear, enoki mushroom, and shiitake. [Reference numerals] (AA) Thirty types of food compositions for fermenting (vegetables and mushrooms); (BB) Green vegetables(6); (CC) Edible roots(6); (DD) Fruit vegetables(6); (EE) Wild edible greens(3); (FF) Fruits(4); (GG) Mushrooms(5); (HH) Washing and dehydrating; (II) Wet pulverizing; 8 deg.; (JJ) Putting into a jar; (KK) Sugar-fermented, Adding 100 parts by weight of black sugar; (LL) Or; (MM) Salt-fermented, Adding 100 parts by weight of black sugar about the weight of raw material; (NN) Fermenting; uniformly supplying oxygen during the fermenting period and stirring once in three days for 100 days, at 8°C; (OO) Juice extracting/filtering, Obtaining the upper fluid by using a centrifuge →centrifuging the upper fluid again to remove remained materials; (PP) Fermenting: 1 year
Patent KR-20130105047-A (KR)
Title: Method and apparatus for enhancing compression rate of video
Inventor: WON JONG WOO
IPC: H04N7/32
Filed: 2012-03-16
Abstract: PURPOSE: A video compression rate enhancing method using a pan-tilt-zoom (PTZ) camera parameter and an apparatus for the same are provided to improve a compression rate of a video, to efficiently compress a video of an internet protocol (IP) camera, and to be applied to a video compressing device which compresses an obtained video in real time. CONSTITUTION: A camera parameter is obtained from a camera (S420). A compression parameter is obtained from a video compressing device (S430). The position of a motion searching area is corrected based on the camera parameter and the compression parameter (S440). [Reference numerals] (AA) Start; (BB) End; (S410) Save camera parameter data; (S420) Obtain a camera parameter; (S430) Obtain a compression parameter; (S440) Correct a starting vector (X, Y)=(x', y'); (S450) Transmit the results to an compressor input
Patent KR-20130107607-A (KR)
Title: Organic light emitting diode display device and method of measuring capacity of pixel current measuring line of the same
Inventor: SEIICHI MIZUKOSHI
IPC: H01L51/50
Filed: 2012-03-22
Abstract: PURPOSE: An organic light emitting diode display device and a capacitance measurement method of a pixel current measurement line thereof prevent uneven brightness by providing an offset and a gain value corrected by a pixel current and compensating for an image signal. CONSTITUTION: A switching unit controls a pixel current to flow through a pixel current measurement line and a line capacitor. A line voltage measurement unit (252) measures a line voltage variation of each pixel current measurement line. A line capacity calculation unit (254a) calculates line capacity by using a first current or a second current received from a current measurement unit (254b). An Ids calculation unit (256a) calculates the pixel current by using the line capacity received from a line capacity unit (254) and the line voltage variation received from the line voltage measurement unit.
Patent KR-20120109377-A (KR)
Title: 에어로젤의 고형화 방법, 이에 의해 제조된 에어로젤 고형재 및 이를 이용한 산업재
Inventor: LEE JIN HEE
IPC: C08K7/26
Filed: 2012-03-23
Abstract: 본 발명은 에어로젤(aerogel : 초다공성 나노구조 에어로젤 신소재)의 고형화 방법, 이에 의해 제조된 고형재 및 이를 이용한 산업재에 관한 것이다. 본 발명의 일측면에 따르면, 고형화 대상 에어로젤에 폴리머제를 혼합하는 폴리머제 혼합 단계를 포함하는 것을 특징으로 하는 에어로젤의 고형화 방법이 제공된다. 상기 폴리머제는 G.M. Boston Company Intl.사의 토양강화제인 PX300일 수 있다.
Patent KR-20130108718-A (KR)
Inventor: YEO SIN GON
IPC: A61H39/04
Filed: 2012-03-26
Abstract: 본 발명은 지압용 헬멧에 관한 것으로, 더욱 상세하게는 내피와 외피의 사이에 중공부를 갖는 헬멧을 구비하되, 내피의 내주면에는 두피 전체를 자극하는 다수의 지압돌기를 형성하되, 그 중공부에 진동자를 형성함으로써, 진동에 의해 착용자의 두피의 전체 경락 및 경혈부의 반복적인 자극이 가해지게 하는 등 두피의 중요 부위의 효율적인 지압으로, 신진대사의 촉진과 혈액순환, 인체에 쌓인 독소와 노폐물을 제거가 등 건강증진을 도모할 수 있게 하하며, 내피의 상부 내주면에 다수의 고휘도 LED를 형성하여 두피에 그 LED 빛이 조사되게 함으로써, LED 빛의 파장에 의한 피부질환치료 및 발모 촉진을 도모할 수 있게 하는 진동 및 고휘도 광 조사 구조를 갖는 머리지압용 헬멧에 관한 것이다.
Patent KR-20130109527-A (KR)
Title: Filter having pressure reducing valve
Inventor: KIM YEONG JO
IPC: F16K31/06
Filed: 2012-03-27
Abstract: PURPOSE: A pressure reducing valve having a filter is provided to rapidly and simply perform a drain work using the magnetic force of a magnet. CONSTITUTION: A pressure reducing valve (1) having a filter has a filter (10). The filter is formed by assembling a cover (13) integrated with a cylindrical filtering part in a valve body (2) through a packing (12). The cylindrical filtering part is stuck to the top inlet of a filter installation space (5) formed in the valve body. A drain hole is formed in the cover. A cutoff ball (15) touching a drain seat coupled to the drain hole is inserted into the top of the cover. A magnet (17) for attracting the cutoff ball is arranged on the outer side of the cover.
Patent KR-20130117490-A (KR)
Title: Plasma reactor having multi discharging tube
Inventor: CHOI DAI KYU
IPC: H01L21/205
Filed: 2012-04-18
Abstract: PURPOSE: A plasma reactor with multiple discharge tubes is provided to respectively activate different gas in two or more independent discharge zones and individually supply the different gas to a process chamber, thereby improving the process efficiency. CONSTITUTION: An upper hollow discharge tube (11) has a gas inlet (14). A lower hollow discharge tube (12) has a gas outlet (15). Multiple discharge tube bridges (13) connect the upper and lower discharge tubes. A transformer-coupled plasma source (20) is mounted onto the discharge tube bridge and has a magnetic core (22) to which a primary coil (21) is wound. An alternating current (AC) switching power source (32) supplies plasma generating power to the primary coil.
Patent KR-20120120071-A (KR)
Title: Inductively coupled plasma processing apparatus
IPC: H01L21/3065
Filed: 2012-04-20
Abstract: PURPOSE: An inductively coupled plasma processing apparatus is provided to divide a metal window into two or more areas along circumferential direction through a slit by arranging the metal window between a plasma generation area and a high frequency antenna. CONSTITUTION: A metal window(3) is divided into two by a line along a circumferential direction Θ of a metal window. The metal window comprises an inner metal window(3a) and an outer metal window(3b). High frequency antennas(11a,11b) generate inductively coupled plasma in a plasma generation area. The metal window is arranged between the plasma generation area and the high frequency antenna. The metal window is divided into a first division and a second division by the line along the circumferential direction. The first division and the second division are electrically insulated each other.
Patent KR-20130119055-A (KR)
Title: Composite of glass substrate for cigs thin film solar cell and cigs thin film solar cell using the composite
Inventor: KIM HYEONG JUN
IPC: C03C3/078
Filed: 2012-04-23
Abstract: PURPOSE: A copper indium gallium selenide thin film solar cell is provided to have a low thermal expansion coefficient, a high strain point, and a high softening point and improve the efficiency of the copper indium gallium selenide thin film solar cell by ensuring uniform dispersion of sodium from a glass substrate. CONSTITUTION: A copper indium gallium selenide(CIGS) thin film solar cell comprises: 55-75 mole% of SiO2, 10-20 mole% of Al2O3,10-18 mole% of Na2O, 0.1-5 mole% of K2O, 0.1-7 mole% of ZnO, and 0.1-7 mole% of RO. RO is an alkaline earth oxide, and more than one kind is selected from MgO, CaO, BaO, and SrO. A glass substrate composition further includes 0.1-3 mole% Li2O. The glass substrate composition has the coefficient of thermal expansion of 60×10^-7/°C-99×10^-7/°C, a strain point of 540-580°C, and a softening point of 800-870°C. The CIGS thin film solar cell comprises: the glass substrate(10) consisting of the glass substrate composition for the CIGS thin film solar cell; molybdenum; back contact electrode(20); a CIGS light absorption layer(30); a CdS or ZnS buffer layer(40); a transparent ZnO layer(50); a transparent electrode layer(60); and a upper electrode(70).
Patent KR-20130121237-A (KR)
Inventor: KIM SEUNG CHAN
IPC: C12N15/63
Filed: 2012-04-27
Abstract: 본 발명은 염증반응과 관련된 단백질인 Homo sapiens interleukin 19 유전자 발현시 생성되는 mRNA에 상보적으로 결합하는 DNA 조각을 제작함으로써 그 단백질 발현을 억제하는 방법이다. 
IL19 표현식 IL4 (147,780) 또는 IL13 (147683)의 동시발현에서 향상은 아니지만 감마 인터페론 (IFNG; 147570) 과 같이 반응 되어, LPS-자극 monocytes에, 과립 세포 대식 세포 콜로니 - 자극 인자 (GMCSF, 138,960) 로 작용하기도 한다. 하지만 다른 사이토카인은 IL19 표현을 일으킬 수 도 있기 때문에 연구가 더 필요하다. Homo sapiens interleukin 19 (IL19) 단백질의 mRNA에 대해 상보적으로 결합하는 10 base pair 이상의 DNA oligomer 을 제작하여 시험관 내 배양된 세포나 조직 그리고 생체에서 그 단백질의 발현량을 줄이는 방법 또는 그 응용으로 이 단백질과 연관된 신호전달체계와 면역반응, 세포주기를 조절하는 실험 장치 또는 방법을 구현할 수 있을 것이라고 사료된다.
Patent KR-20130121245-A (KR)
Inventor: KIM SEUNG CHAN
IPC: C12N15/63
Filed: 2012-04-27
Abstract: The present invention relates to a suppressing method by making DNA fragments which complementarily bind to mRNA produced when Homo sapiens interleukin 6 (interferon, beta 2) (IL6) gene which is a protein related to inflammation is expressed. Interleukin 6(IL6) is a sitokin which has biological functions such as B-cell stimulatory factor-2(BSF-2) and interferon beta-2 and plays a role in IG-secreting cell, the growth of myeloma and plasmacytoma, hepatocytes inducing neural cell differentiation, and B-cell differentiation. The expression level can be appropriately controlled by setting the targets of DNA oligomers at the front, middle and end of mRNA to select high or low knockdown efficiency. Since the DNA oligomer with 18 base pairs is relatively short, PCR primer synthesis can be applied.