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Ham, Daejeon
Changwoo Ham, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110120557 | MANUFACTURING METHOD FOR THIN FILM TYPE LIGHT ABSORBING LAYER, MANUFACTURING METHOD FOR THIN FILM SOLAR CELL USING THEREOF AND THIN FILM SOLAR CELL - Disclosed is a manufacturing method for a thin film type light absorbing layer of a solar cell. The manufacturing method for a light absorbing layer includes: filling CIGS crystal powder in an evaporation source of a chamber; simultaneously evaporating the CIGS crystal powder; and depositing the evaporated CIGS crystal powder on a substrate to form a CIGS thin film. | 05-26-2011 |
Chang-Woo Ham, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110209763 | METHOD OF MANUFACTURING THIN-FILM LIGHT-ABSORBING LAYER, AND METHOD OF MANUFACTURING THIN-FILM SOLAR CELL USING THE SAME - Disclosed is a method of manufacturing a thin-film light-absorbing layer using spraying, including mixing precursor solutions comprising CuCl | 09-01-2011 |
Hosang Ham, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090156159 | COMMUNICATION SYSTEM AND METHOD IN SHIP AREA NETWORK - The present invention relates to a communication system and method in a ship area network. In a network of a structure including a plurality of shielded regions, communication is performed between terminals provided in the shielded region by using wireless communication, and communication is performed between terminals provided in different shielded regions by further using power line communication, optical communication, or the power line communication and the optical communication in addition to the wireless communication. Therefore, it is possible to obtain advantages of minimizing inconvenience, which is caused by using only wire communication in the related art, and enlarging a working area. | 06-18-2009 |
Ho Sang Ham, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100158045 | METHOD FOR TRANSMITTING/RECEIVING DATA FRAME IN CAN PROTOCOL - Provided is a method for transmitting/receiving data in a CAN protocol. First, it is determined whether the size of CAN message data to be transmitted exceeds the size of the data field. If the size of the CAN message data exceeds the size of the data field, the CAN message data are fragmented to generate data fragments smaller in size than the data field, A CAN data frame including a control field and a data field is generated with respect to each of the data fragments, and the generated CAN data frame is transmitted. | 06-24-2010 |
| 20110145457 | APPARATUS AND METHOD FOR MEASURING THE PERFORMANCE OF EMBEDDED DEVICES - The apparatus for measuring the performance of embedded devices includes: a transceiver that transmits and receives data to and from the embedded devices; an interrupt generator that generates interrupt signal; a controller that controls the interrupt generator and the transceiver to generate the interrupt signal and transmits them to the embedded devices and performs a control to calculate real-time performance when the response signal to the interrupt signal are received from the embedded device through the transceiver; and a calculator that calculates the real-time performance of the embedded devices based on the interrupt signal generating time and the response signal receiving time. | 06-16-2011 |
| 20110149845 | METHOD AND SYSTEM FOR PERFORMING ONE-TO-ONE AND GROUP COMMUNICATION CONCURRENTLY IN A WIRELESS IP NETWORK - A system and method for concurrently performing a group communication and a one-to-one communication in a wireless Internet Protocol (IP) network are disclosed. The method includes requesting, upon receipt of a one-to-one communication request from another terminal during a voice group communication, a concurrent mode service to the server by a compound terminal, determining, upon receipt of a group communication IP packet, whether there is a concurrent mode user among group members to receive a voice data packet corresponding to the group communication IP packet by a server, converting the group communication IP packet to a text data packet in the presence of a concurrent mode user by the server, transmitting the text data packet to the concurrent mode user by the server, and transmitting the voice data packet corresponding to the group communication IP packet to group communication mode users except for the concurrent mode user by the server. | 06-23-2011 |
Hyeongtaek Ham, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100113720 | METHOD FOR PREPARING ELASTOMERIC COPOLYMERS OF ETHYLENE AND ALPHA-OLEFINS - Provided is a process for preparing copolymers of ethylene with α-olefin. More specifically, provided are transition metal compound being useful as catalyst for preparing those copolymers, a catalyst composition comprising the same, and a process for preparing elastic copolymers of ethylene with α-olefin, having the density of not more than 0.910, which can be adopted to a wide variety of applications including film, electric wires, and hot-melt adhesives. The catalyst composition is a catalytic system which comprises transition metal catalyst comprising a cyclopentadiene derivative and at least one anionic ligand(s) of aryloxy group with an aryl derivative at ortho-position, and boron or aluminum compound as an activator. Provided is a process for copolymerizing ethylene with α-olefin to produce copolymer having narrow molecular weight distribution and uniform density distribution with the density of not more than 0.910, with high activity and excellent reactivity on higher α-olefin. | 05-06-2010 |
Hyeong Taek Ham, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100234545 | ETHYLENE COPOLYMER HAVING MULTIPLE PITCH MOLECULAR WEIGHT DISTRIBUTION AND THE METHOD OF PREPARING THE SAME - Disclosed are an ethylene polymerization process, a catalyst for use in the process, a production method employing the catalyst, and a product produced thereby. More specifically, disclosed is a process of producing an ethylene copolymer from ethylene and an alpha-olefin comonomer, in which the produced ethylene copolymer has a multimodal molecular weight distribution and excellent processability and physical properties, and thus can increase the value and productivity of products, including pipes and films. Particularly, the produced ethylene copolymer has a trimodal or higher molecular weight distribution or density distribution, and thus, when it is a linear low-density copolymer, it has an excellent effect of improving the impact strength of films, and when it is a medium-density ethylene copolymer, it can be produced into pipes, which have slow crack growth rate and can be used even at high temperature. | 09-16-2010 |
Hyeongtek Ham, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20100113729 | ETHYLENE COPOLYMER WITH IMPROVED IMPACT RESISTANCE - Provided are ethylene copolymers with excellent impact resistance. More specifically, provided are ethylene copolymers satisfying certain correlation between the falling dart impact strength (F) or high rate impact resistant breakage energy (E) and Vicat softening point. The ethylene copolymers with improved impact properties are applicable to film, injection, compound, sheet, roto, pipe or blow molding. | 05-06-2010 |
Hyung Suk Ham, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110163906 | RADAR APPARATUS, ANTENNA APPARATUS, AND DATA ACQUISITION METHOD - A radar apparatus, an antenna apparatus, and a data acquisition method are provided, which can reduce the size of a radar apparatus as well as maintaining angular resolution. | 07-07-2011 |
Young Bog Ham, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20090097995 | SYRINGE PUMP - A syringe pump is disclosed, which uses the linear actuator applying a linear motion of a piezoelectric linear motor in moving the piston, such that suction and exhaustion of the fluid can be performed more precisely through controlling of power supply with respect to the piezoelectric linear motor. | 04-16-2009 |
| 20090308796 | SELF-RECIPROCATING ENERGY RECOVERY DEVICE - Disclosed is a self-reciprocating energy recovery device utilized in driving of a seawater pump by self-reciprocating a piston of a power recovery chamber and recovering energy not using an electronic drive unit but using the hydraulic power of concentrated water. The self-reciprocating energy recovery device including a pair of power recovery chambers having pistons therein respectively, a high-pressure concentrated supply pipe, a low-pressure concentrated discharge pipe, and a high-pressure seawater discharge pipe to enable the power recovery chambers to recover hydraulic power supplied through the high-pressure concentrated water supply pipe and utilize the hydraulic power in driving of a seawater pump. | 12-17-2009 |
| 20100102093 | Hollow Actuator-Driven Droplet Dispensing Apparatus - A hollow actuator-driven droplet dispensing apparatus may include an elastic tube having an elastic body, defining a storage space therein, and extending a predetermined length, and a hollow actuator fitted around the elastic tube so as to generate a force and a displacement in the longitudinal direction when an electric field is applied. The hollow actuator is expanded or contracted in the longitudinal direction of the elastic tube when the external voltage is applied, thereby reducing or enlarging the volume of an inner space of the elastic tube. The droplet dispensing apparatus can press the elastic tube to expand or contract the volume of the inner space of the tube using the hollow actuator capable of quickly generating a displacement in response to an application voltage so that a fixed amount of content can be discharged out and taken into the tube. | 04-29-2010 |
Young-Hwan Ham, Daejeon KR
| Patent application number | Description | Published |
|---|---|---|
| 20110176521 | APPARATUS AND METHOD OF TRANSMITTING PACKET OF NODE IN WIRELESS SENSOR NETWORK - Provided is an apparatus and method of transmitting a packet of a node in a wireless sensor network. The apparatus includes a plurality of priority queues, wherein packets to be transmitted to neighboring nodes are stored in each of the priority queues according to transmission priority, and the packets are transmitted according to the priority of each priority queue. Accordingly, a delay of a packet that requires real-time transmission is minimized by using priority queues in a node. | 07-21-2011 |