baber/WOPTO huggingface dataset:
Patent KR-20170047148-A (KR)
Title: Heat pump assembled evaporative condenser
Inventor: SONG DEOG YONG
IPC: F25B30/02
Filed: 2016-02-22
Abstract: The present invention relates to an evaporative condenser integrated heat pump including a compressor, an expansion valve, a liquid receiver, a four-way valve, and an oil separator. According to the present invention, the evaporative condenser integrated heat pump comprises: an indoor heat exchanger; an outdoor heat exchanger; a preheating heat exchanger provided with a pipe transferring a refrigerant leaking from the indoor heat exchanger, wherein the pipe is further extended and disposed near to the outdoor heat exchange; a blower unit introducing outdoor air and flowing the outdoor air from the preheating heat exchanger to the outdoor heat exchanger, wherein the preheating heat exchanger is operated on heating.
Patent KR-20170101486-A (KR)
Inventor: CHO IN KYUN
IPC: A23L19/00
Filed: 2016-02-29
Abstract: 부추와 햄, 양파를 잘게 다진 후 마요네즈로 버무려 삶은계란으로 응고시킨 후 어묵반죽에 넣어 고로케 모양으로서 제조 및 성형하는 방법. 부추의 모든 영양가 및 장점을 그대로 어묵과 함께 섭취할 수 있는 방법.
Patent KR-20170104842-A (KR)
Inventor: GANG HYE NYEONG
IPC: A22C25/17
Filed: 2016-03-08
Abstract: 본 발명은, 세척된 후 수분을 제거한 갈치의 지느러미와 머리 및 내장을 제거하는 단계,  갈치의 뼈를 발라 내도록 갈치의 몸통을 한 쌍의 포로 뜨는 단계,  뼈가 발라진 한 쌍의 포 중 일측의 포를 둥글게 말아 주는 단계,  한 쌍의 포 중 나머지 타측의 포가 둥글게 말아놓은 포에 꼬임상태로 감김된 후, 고정되도록 묶어주는 단계를 포함하는 가공갈치의 제조방법을 제공한다. 
이와 같은, 가공갈치 및 그 제조방법은, 뼈를 발라낸 상태로 일측의 포 및 타측의 포를 뜬 후, 일측의 포를 둥글게 감고, 타측의 포는 일측의 포에 고정되도록 꼬임상태로 감아 묶어줌으로써, 몸집이 작은 갈치를 조리시에도 살이 부서지는 것을 최소화할 수 있게 한다.
Patent KR-20170108211-A (KR)
Inventor: PARK BYUNG KI
IPC: F21V19/00
Filed: 2016-03-16
Abstract: The present invention provides an edge-type LED lamp capable of maximizing an illumination area by reducing a frame space. The edge-type LED lamp according to the present invention includes: a light guide plate; an LED unit including a plurality of LEDs arranged along a side edge of the light guide plate and emitting light along the plate surface of the light guide plate; and a frame supporting the light guide plate and the LED unit with a plurality of frame members surrounding the light guide plate. At least one frame member includes a frame body with an illumination support unit formed to receive at least a part of the LED unit and a cover member forming the frame space by being combined with the frame body to be rotatably opened and closed. The frame body and the cover member include a rotation support unit and a rotation unit engaged with each other in a common rotation axis line, respectively. The cover member has a free end part in parallel to the rotation axis line and the free end part is arranged outside the rotation axis line.
Patent KR-20160113052-A (KR)
Title: An artificial force feel generating device for a vehicle control system of a vehicle and, in particular, of an aircraft
Inventor: GROHMANN BORIS
IPC: B64C27/59
Filed: 2016-03-18
Abstract: The present invention relates to an artificial force feel generating device (6) for generation of an artificial feeling of force on an inceptor (4a) of a vehicle control system (10), the inceptor (4a) being adapted for controlling a servo-assisted control unit (4, 3) of the vehicle control system (10) via a mechanical linkage (5), wherein at least one first force generating device and at least one second force generating device are mechanically connected to the inceptor (4a), the first force generating device being provided for generating a nominal force acting in operation on the inceptor (4a) and the second force generating device being provided for generating a tactile cue force acting in operation on the inceptor (4a), the first and second force generating devices (12) being arranged in parallel. The present invention relates further to an aircraft comprising such an artificial force feel generating device.
Patent KR-20170059872-A (KR)
Inventor: SEO SHANG HOON
IPC: H01L23/00
Filed: 2016-03-22
Abstract: The present disclosure relates to an electronic component package and an electronic device comprising the same. The electronic component package includes an electronic component; and a passivation layer which is electrically connected to the electronic component and has a redistribution layer having a connection terminal pad and an opening part which is disposed on one side of the redistribution layer and opens at least a part of the connection terminal pad. The connection terminal pad has different distances from a center thereof to at least two points of a rim. So, board level reliability can be improved.
Patent KR-20170110952-A (KR)
Inventor: KIM KYUNG HO
IPC: H04M1/725
Filed: 2016-03-24
Abstract: 본 발명의 일실시예에 의한 모바일 디바이스는, 터치 센서와, 디스플레이 모듈과, 특정 조건이 만족된 경우, BLP (Beacon and Launch Protocol) 패킷을 수신할 수 있는 모드로 진입하고, 적어도 하나의 외부 디바이스로부터 BLP 패킷을 수신하고, 상기 수신된 BLP 패킷에 포함된 IP 주소로 액세스 하는 통신 모듈과, 그리고 상기 적어도 하나의 외부 디바이스의 메모리에 포함된 어플리케이션에 대응하는 특정 어플리케이션이 존재하는 경우, 상기 특정 어플리케이션을 실행하고, 상기 적어도 하나의 외부 디바이스의 메모리에 포함된 어플리케이션에 대응하는 특정 어플리케이션이 존재하지 않는 경우, 상기 특정 어플리케이션을 다운로드 하도록 가이드 하는 메시지를 디스플레이 하도록 상기 디스플레이 모듈을 제어하는 컨트롤러를 포함한다.
Patent KR-20170112418-A (KR)
Inventor: CHOI JAE SUNG
IPC: H01L21/02
Filed: 2016-03-31
Abstract: 반도체 소자의 제조 방법에 있어서, 반도체 기판의 상부에 플라즈마 패시베이션 막을 형성하는 단계; 및 원자층 증착법을 이용하여 상기 플라즈마 패시베이션 막의 상부에 절연층을 형성하는 단계를 포함하는 반도체 소자 제조 방법이 개시된다.
Patent KR-20160121780-A (KR)
Inventor: LEE KUEN YONG
IPC: C12N5/077
Filed: 2016-04-08
Abstract: The present invention relates to a polymer cell supporter for inducing the intercellular adhesion. The cultured intercellular adhesion is induced by using the polymer cell supporter of the present invention, therethrough providing a composition for inducing cell differentiation or a composition for transplanting cells, and the like. The polymer cell supporter comprises: (a) a biocompatible polymer backbone; and (b) cadherin-adhesive oligopeptide coupled to the polymer backbone.
Patent KR-20160042861-A (KR)
Inventor: NAGAKURA TAKESHI
IPC: C09J133/04
Filed: 2016-04-11
Abstract: Provided in the present invention are an adhesive composition having excellent antistatic performance, having corrosion resistance, and being less contaminated, and an adhesive film and a surface protection film using the same. The adhesive composition of the present invention comprises a (meth)acrylic polymer including a (meth)acrylate ester monomer having a C1-C14 alkyl group as a main component, and comprises an ionic compound having the melting point of 30°C or more. Also, the adhesive composition comprises a (meth)acrylic polymer including a (meth)acrylate ester monomer having a C1-C14 alkyl group as a main component, and comprises an ionic compound having acid value of the (meth)acrylic polymer of 30 or less, and having the melting point of 30°C or more.
Patent KR-20170117646-A (KR)
Title: 에어 블로워 유닛 팬
Inventor: PARK CHUNG HUN
IPC: F04D29/40
Filed: 2016-04-14
Abstract: 본 발명은 에어 블로워 유닛 팬을 개시한다. 
본 발명은, 내부에 유입공간부를 갖고, 기체가 유입되기 위한 유입관; 상기 유입공간부와 연통되는 배출공간부를 갖고, 상기 유입관으로 유입된 기체가 배출되기 위한 배출관; 상기 유입관과 배출관을 연결시키되, 유입관과 배출관 사이에 과급공간부를 형성시키고, 상기 과급공간부를 상기 배출공간부에 연통시키는 과급공이 형성되도록 상기 유입관의 타단이 상기 배출관의 일단과 일정 간격 이격되어 결합시키는 결합수단; 을 포함하는 배출량 조절 가능한 에어 블로워 유닛에 있어서, 베어링의 외륜에 구비되어 외부공기를 주입시켜 배관에 흡입 운동하게 하는 팬과, 상기 팬과 일체로 형성되는 것으로 유입부 외주면을 따라 복수개의 공기흐름 홀이 생성되며 배출부 외주면에는 테이퍼가 형성되는 중공축의 팬하우징; 상기 에어 블로워 유닛 내부 기체통로에 팬하우징이 구비되어 공기가 배출부로 흐를 시 압력을 높여 풍속을 증폭하는 것을 특징으로 하는 것으로써, 팬하우징 타측 배출부 외주면을 테이퍼(T)로 형성하여 벤츄리 원리를 통해 순환기체를 좀 더 빠르게 그리고 많은 량의 순환기체를 순환 또는 배출시킬 수 있게 되며, 특히 전자석을 이용하여 팬을 회전시킴으로써 풍량을 선택적으로 증폭시킬 수 있음은 물론 팬하우징이 에어 블로워 유닛 내부 기체통로에 위치되어져 청소 및 유지보수가 수월한 효과가 있다.
Patent KR-20160123247-A (KR)
Inventor: OMAR FAKHR
IPC: G03F7/38
Filed: 2016-04-14
Abstract: The present invention relates to a method for at least partially curing a photoresist (12) applied on a substrate (14), which comprises the following steps. A substrate (14), which is coated with the photoresist (12), is arranged on a support unit (16). The photoresist (12) is stored at a temperature proper for curing the photoresist (12) for a first predetermined period. After the first predetermined period elapses, the substrate (14) is lifted from the support unit (16), rotated, placed on the support unit (16) again, and then stored at the temperature proper for curing the photoresist (12) for a second predetermined period. The present invention also relates to an apparatus for at least partially curing a photoresist (12) applied on a substrate (14). The apparatus comprises a chamber (20), a substrate (14), which is arranged in the chamber (20) and on which the substrate (14) is arranged, and a device (22) for rotating the substrate (14) with respect to the support unit (16) between a first curing phase and a second curing phase of the photoresist (12). According to the present invention, the photoresist can be cured on the substrate, which enables the photoresist to have a uniform thickness.
Patent KR-20170119207-A (KR)
Title: 차량용 모터 제어 장치 및 방법
Inventor: DO SANG HWA
IPC: H02P27/06
Filed: 2016-04-18
Abstract: 본 발명은 차량용 모터 제어 장치에 관한 것으로, 구체적으로 모터 효율과 인버터 효율을 기반으로 구동모터를 제어하기 위한 최적의 효율점을 추출하는 차량용 모터 제어 장치 및 방법에 관한 것이다. 
이를 위해, 본 발명의 일 실시 예에 따른 차량용 모터 제어 장치는 인버터로부터 전류를 공급받는 구동모터를 제어하는 차량용 모터 제어 장치에 있어서, 유한요소 해석을 통해 구동모터에 대한 모터 효율맵을 생성하는 제1 생성부, 상기 인버터에 대한 인버터 효율맵을 생성하는 제2 생성부, 상기 모터 효율맵과 인버터 효율맵을 기반으로 시스템 효율맵을 생성하는 제3 생성부 및 상기 시스템 효율맵에서 최대 시스템 효율에 따른 전류 운전점을 추출하여 상기 구동모터를 제어하는 제어부를 포함한다.
Patent KR-20170119602-A (KR)
Title: 사각 파이프 결합형 조립식 구들장 제조방법 및 이 제조방법에 의해 제조된 조립식 구들장
Inventor: CHOI YONG SIG
IPC: C04B14/36
Filed: 2016-04-19
Abstract: 본 발명은 사각 파이프 결합형 조립식 구들장 제조방법 및 이 제조방법에 의해 제조된 조립식 구들장에 관한 것으로, 황토에 시멘트를 소량 혼합하고, 여기에 폴리머를 배합하여 건축시공에 적합하고, 기포발생 수단을 부가하여 강도가 보강되면서 무게를 대폭 낮추고 조립성을 극대화시키며, 옥을 투여하여 원적외선이 발산되도록하되 제작과정에서 원적외선을 체크하여 원적외선이 발산되지 않을 경우 적절한 조치를 강제하도록 구성하며, 특히 사각 파이프를 블록에 삽입시켜 상기 사각 파이프를 통해 열이 전달되도록하여 바닥면에 근접하는 파이프의 단면적을 넓힘으로서 열전달 효율을 극대화시키도록 구성한 것을 특징으로 하는 사각 파이프 결합형 조립식 구들장 제조방법 및 이 제조방법에 의해 제조된 조립식 구들장에 관한 것이다.
Patent KR-20170120932-A (KR)
Inventor: LEE JUN HYUCK
IPC: H01R24/58
Filed: 2016-04-22
Abstract: According to the present invention, disclosed is an electronic device which comprises: a ground wire connected to a ground terminal of an ear phone plug; an earphone interface arranged to be separated from the ground wire at a predetermined wire wherein the earphone interface includes a coupler configured to couple a wireless signal flowing in the ground wire; and a wireless signal processing module configured to process the wireless signal that the coupler couples. Moreover, a variety of embodiments found by the specification are possible.
Patent KR-20170123498-A (KR)
Inventor: KIM DAE HOON
IPC: H04N5/359
Filed: 2016-04-29
Abstract: The present invention relates to an image sensor which can acquire a high-quality iris image indoors and outdoors, and has improved quantum efficiency in a wavelength band having a higher absorption rate of sunlight than an adjacent wavelength band among infrared bands. To this end, according to the present invention, provided is a complementary metal-oxide-semiconductor (CMOS) image sensor configured in an apparatus for acquiring an iris image indoors and outdoors which has quantum efficiency for a specific wavelength higher than a conventional CMOS image sensor in at least a part of a first band having a wavelength of 920 to 960 nm, a second band having a wavelength of 1,110 to 1,160 nm, and a third band having a wavelength of 1,300 to 1,500 nm in wavelength bands having higher absorption rate of sunlight than an adjacent wavelength band among infrared bands, such that noise due to sunlight is reduced when an iris image including the wavelength bands is photographed. That is, the CMOS image sensor of the present invention can acquire a high-quality iris image indoors and outdoors when the photographing including a corresponding wavelength band is performed by improving the quantum efficiency in wavelength band having a higher absorption rate of sunlight than an adjacent wavelength band among infrared bands. Accordingly, when an iris is photographed outdoors, noise due to sunlight is reduced, and a high-quality iris image can be acquired.
Patent KR-20170127867-A (KR)
Inventor: YU JAE CHUN
IPC: E04F10/06
Filed: 2016-05-13
Abstract: The present invention relates to a moving member for a sky awning having a dual fabric. According to the present invention, the moving member for a sky awning having a dual fabric comprises: a pair of rail frames having a belt groove and a rail groove in the longitudinal direction, wherein one side of the rail frame is fixed to a wall and the other side is fixed to a pillar; a driven member sliding along the rail groove by being mounted on the rail groove and moving an awning screen fixed to one side in the longitudinal direction of the rail frame; multiple moving members arranged along the rail groove to connect the awning screens and folding and unfolding the awning screen by being engaged in accordance with sliding of the driven member; a fixing bracket fixing the one side of the awning screen to the one side of the rail frame; and a driving member moving the driven member in the longitudinal direction of the rail frame by using a driving force by being connected to the driven member by a belt. Therefore, the moving member for a sky awning can provide pleasant environment in accordance with a season and a weather and can improve blocking effect of rain or sunlight by including the dual awning screen by selection of a user in a wide outdoor place.
Patent KR-20170128002-A (KR)
Inventor: KIM DONG JOON
IPC: E04B1/24
Filed: 2016-05-13
Abstract: Disclosed are a connection socket of a steel column and a beam, and a framework connection structure using the same, which can improve constructability to easily connect a steel column and a column, and a column and a beam through a bolt coupling and insertion coupling structure instead of welding. According to the present invention, the connection socket of a steel column and a beam may comprise: a first steel pipe unit to which at least one beam is coupled to an external side surface; a second steel pipe unit inserted into the inside of the first steel pipe unit, and protruding compared to an upper end a lower end of the first steel pipe unit, wherein end portions of an upper steel pipe column and a lower steel pipe column are individually inserted into and coupled to an upper end protruding portion and a lower end protruding portion; and a filling material filled in the inside of the second steel pipe unit to prevent deformation of the first and second steel pipe units.
Patent KR-20160145486-A (KR)
Title: Automatic cooker having the suppling control function of hot and cold water based on condition of grain and method of cooking using the same as
Inventor: HAM YONG SEUNG
IPC: A47J47/04
Filed: 2016-05-16
Abstract: The present invention provides an automatic cooking apparatus having a function to control supply of hot/cold water based on a condition of grains, capable of controlling a heating time according to grain moisture content, and a cooking method using the same. According to the present invention, the apparatus comprises: a transfer unit to transfer grains to a cooking vessel placed in a predetermined position from a storage unit; a moisture content measurement unit installed in the transfer unit to measure the moisture content of the grins in a transfer process; a water supply unit to supply one or more among hot, cold, and purified water to the cooking vessel; a heating unit to heat the cooking vessel receiving the grains and cooking water; a control unit to control the quantity of the grains transferred through the transfer unit, control the supply amount of the cold, hot, and purified water by corresponding to a measurement value received from the moisture content measurement unit, and control a heating amount and time through the heating unit; and a main unit including the storage unit, the transfer unit, the moisture content measurement unit, the water supply unit, the heating unit, and the control unit.
Patent KR-20170129456-A (KR)
Inventor: KIM WON KYUNG
IPC: H02J3/32
Filed: 2016-05-17
Abstract: A battery energy storage system according to the embodiment includes a first power generation device for generating electric power; an energy storage device for storing power generated through the first power generation device and outputting the stored power to a system; and a control part for comparing a first power value generated by the first power generation device and the target power value of the system and controlling the operation of the energy storage device according to the comparison result. The energy storage device includes a plurality of energy storage parts for storing power and having different operation characteristics. The control part determines the operation conditions of the plurality of energy storage parts based on the operation characteristics of the plurality of energy storage parts and controls the operation of the plurality of energy storage parts based on the determined operation conditions. It is possible to stably maintain the life of a battery.
Patent KR-20170131776-A (KR)
Inventor: CHO SUNG HYUN
IPC: F16H61/12
Filed: 2016-05-20
Abstract: According to the present invention, a control method for a vehicle with a DCT, which comprises: a diagnosis step of applying test pulse to diagnose a hole sensor after opening a relevant clutch and taking a step to restrict engine torque for restricting an increase of the number of engine rotation when an error is detected by a controller from a hole sensor signal; a reset trying step of trying resetting a clutch position to an initial position when the hole sensor signal is normal by the controller after the diagnosis step; and a returning step of releasing the restriction step for the engine torque by normally controlling a clutch to target clutch stroke from the initial position when the clutch position is reset to the initial position by the reset trying step.
Patent KR-20170132920-A (KR)
Title: 자동차의 엔진 인캡슐레이션용 폴리우레탄 폼과 이를 이용한 엔진 인캡슐레이션
Inventor: KWON CHOONG HO
IPC: C08G18/32
Filed: 2016-05-24
Abstract: 본 발명은 폴리프로필렌 글리콜(PPG)에 장쇄 폴리프로필렌 글리콜(Long Chain PPG)을 혼합하여 폴리올을 제작함으로써, 내열 성능을 높이면서도 고온과 저온 상태에서도 치수 안정성과 내열 성능을 높일 수 있게 한 자동차의 엔진 인캡슐레이션용 폴리우레탄 폼과 이를 이용한 엔진 인캡슐레이션을 제공하는 데 그 목적이 있다. 또한, 본 발명은 파인 셀 유도 정포제를 첨가하여 발포액의 표면장력을 줄일 수 있게 구성하므로, 폴리우레탄 폼을 자를 때 미세 먼지의 발생을 줄이면서 기포 셀 구조를 균일하고 미세하게 형성하여 분진 발생을 줄일 수 있게 한 자동차의 엔진 인캡슐레이션용 폴리우레탄 폼과 이를 이용한 엔진 인캡슐레이션을 제공하는 데 다른 목적이 있다.
Patent KR-20170133649-A (KR)
Inventor: KIM KYEONG HWAN
IPC: B29C33/76
Filed: 2016-05-26
Abstract: The present invention relates to an injection mold including a steam line for heating a resin, particularly a vehicle radiator grille. The injection mold with an improved steam line of the present invention comprises: a rectangular upper cavity core; a lower cavity core corresponding to the upper cavity core; an upper steam core coupled to a predetermined insertion part formed in the upper cavity core; and a lower steam core coupled to an insertion part formed in the lower cavity core corresponding to the upper cavity core. Preferably, a first semicircular groove formed in a bottom surface of the upper steam core and a second semicircular groove formed in the surface of the insertion part of the upper cavity core correspondingly to the first semicircular groove are aligned with each other to form a circular steam line, and a third semicircular groove formed in a top surface of the lower steam core and a fourth semicircular groove formed in the surface of the insertion part of the lower cavity core correspondingly to the third semicircular groove are aligned with each other to further form a circular steam line, wherein the semicircular grooves are made by numerical control (NC) work.
Patent KR-20170134046-A (KR)
Inventor: LEE JUNG SIC
IPC: F25D17/04
Filed: 2016-05-27
Abstract: The present invention relates to an isothermal-isohumidity ventilation regulation apparatus for low temperature storages which comprises: an air flow part supplying air, of which a temperature and humidity are regulated after taken into the isothermal-isohumidity ventilation regulation apparatus, into the low temperature storage; and a release gas flow part taking in release gas produced in the low temperature storage so as to release the same to the outside. More specifically, provided is an isothermal-isohumidity ventilation regulation apparatus for low temperature storages, capable of keeping the inside of the low temperature storage within a specific range of temperature and humidity.
Patent KR-20170043081-A (KR)
Title: Ship 's location reporting device including sensors and automatic separator, and method for providing ship monitoring service using the same
Inventor: KWAK DONG YOUN
IPC: B63B49/00
Filed: 2016-06-08
Abstract: Provided is a vessel position reporting device, which transmits a rescue request signal to a control server on the ground when a vessel is in emergency and is automatically separated from a holder unit in which the vessel position reporting device is mounted. According to an embodiment of the present invention, the vessel position reporting device includes: an inclination sensor generating an inclination sensing signal including an acceleration value of the vessel, an angular speed of the vessel, and an earth magnetic field value; a collision sensor generating a collision sensing signal indicating a collision of the vessel; a sinking sensor generating a sinking sensing signal indicating sinking of the vessel; a processor determining overturn of the vessel, the collision of the vessel, and the sinking of the vessel by using the inclination sensing signal, the collision sensing signal, and the sinking sensing signal and generating the rescue request signal and a separation signal in accordance with results of the determination; a communication module transmitting the rescue request signal to the control server; an automatic separation device separating the vessel position reporting device from the holder unit on which the vessel position reporting device is mounted, in accordance with the separation signal; and a battery providing power to a sensor module, the processor, the communication module, and the automatic separation device.
Patent KR-20160150032-A (KR)
Inventor: ENDO TADASUKE
IPC: B32B27/36
Filed: 2016-06-16
Abstract: Provided is a build-up material with alleviated scratches as an insulation layer. The build-up material (200) of the present invention is used to form an insulation layer on a circuit forming surface of a core layer having the circuit forming surface on one side or both sides. The build-up material (200) includes a resin composition layer (101), wherein a cured product can be obtained by smoothing and curing the resin composition layer (101) at conditions of 160C or more, 0.6 MPa or more, and 60 minutes or more. When measured based on ISO14577 using a nanoindenter, the surface hardness of the cured product is 350-1,000 MPa.
Patent KR-20170142640-A (KR)
Inventor: SUH YOUNG JOO
IPC: H04W72/02
Filed: 2016-06-20
Abstract: A channel selection method of a communications node in a communications network is disclosed. The channel selection method of a first communications node according to the present invention comprises: receiving a first message including information on each of a primary channel of each of a plurality of access points from each of the access points; transmitting a second message including information on the primary channel of each of the access points and information on received signal strength of the first message to a second communications node; receiving from the second communications node, a third message including information on the primary channel of each of the access points and information on a primary channel determined based on the received signal strength of the first message; and selecting a channel indicated by the information on the primary channel included in the third message as a primary channel used in the first communications node. According to the present invention, the access point executing the channel selection method may discover a hidden channel in the communications network in which a plurality of access points exist, and prevent a collision in frame transmission caused by the incorrect selection of a primary channel.