Samsung Electronics Co., Ltd.

Se-young Oh

Jong-min Kim

Yong-woo Lee

Jae-woo Chung

Mi-jeong Song

Chang-heon Yoon

Sang-kwon Wee

Wha-seob Sim

Sang-hun Park

Sung-min So

Min-Soo Kim

Young-ki Hong

Sung-gyu Kang

Kye-Si Kwon

Seog-Soon Baek

Gee-Young Sung

Jin-Mok Kim

Hun-sok Oh

Ju-seong Lee

Hee-chul Cho

Electronic device includes first wireless communication interface; second wireless communication interface; and controller. The controller is configured to, based on discovering operation of external electronic device to discover the electronic device, establish connection with the external electronic device using the second wireless communication interface, based on the connection to access point using the first wireless communication method being required, transmit, via the second wireless communication interface, to the external electronic device, information indicating that the electronic device requires the connection to the access point using the first wireless communication method, based on the access point connection information received from the external electronic device via the second wireless communication interface, establish, via the first wireless communication interface, the connection with the access point using the first wireless communication method, and transmit reply to the external electronic device, indicating that the connection between the electronic device and the access point is established.

Electronic apparatus and method of setting network of audio device

Provided is a method of controlling transmission of a packet, the method including generating first group generation information used to generate a plurality of first virtual machine groups by grouping at least one of a plurality of virtual machines in a first host server, based on a network service descriptor related to at least one service provided by a plurality of host servers, transmitting the first group generation information to the first host server, generating a packet transmission rule related to packets transmitted among the plurality of first virtual machine groups, based on the network service descriptor, transmitting the generated packet transmission rule to the first host server, receiving, from the first host server, a notification message notifying about receipt of a packet transmission request that violates the transmitted packet transmission rule, when receiving the violating packet transmission request in the first host server, and outputting the notification message received from the first host server.

Server and method for controlling packet transmission

Provided are an electronic apparatus and a method which is performable by the electronic apparatus to set a network of an audio device. Furthermore, provided are an electronic apparatus that may transmit, via a second communication method, access point connection information that corresponds to an access point that is connected via a first communication method to an audio device, and a method for setting a network of the audio device.

A device and method of controlling a sound reproducing device are disclosed. The device includes a communication unit, which transmits and receives data to and from the sound reproducing device; a sensing unit, which detects a motion of the device and obtains azimuth information regarding an azimuth pointed by a pre-set region of the device based on the motion; and a control unit, which receives the azimuth information regarding the sound reproducing device from the sound reproducing device via the communication unit and, if it is determined that the azimuth information regarding the device corresponds to the azimuth information regarding the sound reproducing device within a pre-set range, determines the sound reproducing device as a controlled device.

Device for controlling sound reproducing device and method of controlling the device

A piezoelectric inkjet head having piezoelectric actuators for restrictors includes a flow channel plate including an ink inlet through which ink enters, a plurality of pressure chambers into which ink to be ejected is filled, a manifold which is a path to receive ink from the ink inlet and to supply the received ink to the pressure chambers, a plurality of restrictors that connect the manifold to the pressure chambers, and a plurality of nozzles to eject ink from the pressure chambers to an outside thereof. The piezoelectric inkjet head also includes a plurality of first piezoelectric actuators formed on the flow channel plate corresponding to positions of the pressure chambers to provide a driving force to each of the pressure chambers to eject ink to the outside. The piezoelectric inkjet head also includes a plurality of second piezoelectric actuators formed on the flow channel plate corresponding to positions of the restrictors to change cross-sectional areas of the restrictors.

Inkjet head having piezoelectric actuator for restrictor, and image forming method and apparatus having the same

A piezoelectric inkjet head includes a plurality of pressure chambers filled with ink that is to be ejected, a manifold to supply ink to the pressure chambers and extending in both sides of each of the pressure chambers parallel to a direction in which the pressure chambers are arranged, a restrictor to connect the manifold to each of the pressure chambers, and to be connected to both ends of each of the pressure chambers in a longitudinal direction, a plurality of piezoelectric actuators respectively corresponding to the pressure chambers, and at least one nozzle respectively connected to each of the pressure chambers, and to be symmetrically arranged with respect to the centerline in a longitudinal direction of each of the pressure chamber. The at least one nozzle includes a first nozzle and at least two second nozzles, the first nozzle is disposed to correspond to the centerline in the longitudinal direction of each of the pressure chambers, and the second nozzles are disposed in both sides of the first nozzle.

Piezoelectric inkjet head

A piezoelectric inkjet head and a method of manufacturing the piezoelectric inkjet head. The piezoelectric inkjet head includes three single crystal silicon substrates bonded to each other. An upper substrate includes an ink inlet, a plurality of pressure chambers, and a plurality of piezoelectric actuators, a middle substrate includes a manifold, a plurality of restrictors, and a plurality of first dampers, and a lower substrate includes a plurality of nozzles. The middle substrate also includes a membrane that is formed under the manifold to mitigate a rapid pressure change in the manifold and if formed of a material different from the material used for forming the middle substrate. A cavity located under the membrane and at least one venting channel that connects the cavity to the outside are formed in the middle substrate or the lower substrate. Due to the above configuration, the membrane having flexibility mitigates a rapid pressure change in the manifold caused by backflow of ink, and thus, cross-talk between adjacent pressure chambers during ink ejection can be effectively prevented.

Piezoelectric inkjet head and method of manufacturing the same

A restrictor with a structure to prevent a back flow of ink and an inkjet head including the restrictor. In the inkjet head, an ink channel is formed in a channel plate, and the ink channel includes an ink inlet, a plurality of pressure chambers, a manifold, a plurality of restrictors respectively connecting the pressure chambers to the manifold, and a plurality of nozzles. Piezoelectric actuators are formed on the channel plate. Each of the restrictors includes a plurality of protrusions formed on an inner surface thereof in a structure suitable to increase a flow resistance of the restrictor when ink flows from the pressure chamber to the manifold through the restrictor. Each of the protrusions includes a first surface facing a flow of ink moving through the restrictor in a direction from the manifold to the pressure chamber, and a second surface facing a flow of ink moving through the restrictor in a direction from the pressure chamber to the manifold. The first surface has a low flow resistance, and the second surface has a high flow resistance. Therefore, a black flow of ink is restricted when ink is ejected, and sufficient ink can be supplied through the restrictor during an ink refill process.

Restrictors with structure to prevent back flow and inkjet head having the same

A nozzle plate and printhead allowing for control of a deflection direction of ejected droplets using electro-wetting, and methods of operating and manufacturing the same. The nozzle plate has at least one nozzle for ejecting fluid and includes electrode segments disposed along a circumference of the nozzle, an insulating layer disposed on a surface of each electrode segment so as to contact fluid in the nozzle, the insulating layer divided into at least two insulating layer segments corresponding to the electrode segments, and a wire pattern electrically coupled to the electrode segments.

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Yongin-si, South Korea

Se-young Oh