Chosun University joseon daehakgyo) is one of the oldest and private universities in South Korea. Its campus is situated in Gwangju metropolitan city, in southwestern South Korea. The current president is Joen Ho-Jong. Around 33,000 students are enrolled. Wikipedia.
Chosun University | Date: 2016-08-25
Disclosed are a fault-localization and error-correction method for a self-checking binary signed-digit adder and a digital logic circuit for performing the method. More specifically, a fault-localization and error-correction method for a self-checking binary signed-digit adder in which a stuck-at fault of the self-checking binary signed-digit adder may be detected at low cost and with low complexity and in which an error may be autonomously corrected using the self-dual concept, and a digital logic circuit for performing the method are disclosed.
Chosun University | Date: 2015-05-19
A method of fabricating a customized orthodontic appliance includes a setup model forming step of preparing a setup model corresponding to teeth after ideal orthodontic treatment for a patient, an arch wire forming step of preparing an arch wire corresponding to a dental arch of the setup model while being disposed to closely approach tooth surfaces of teeth of the setup model, and an orthodontic bracket forming step of forming a bracket body corresponding to each of the teeth with reference to the arch wire. Through this, the customized orthodontic appliance capable of minimizing the distance between the tooth surface and the arch wire to accurately perform the ideal orthodontic treatment is fabricated. Also, convenience and accuracy of procedure is improved, and irritating sensation in the oral cavity is minimized.
Chosun University | Date: 2016-09-28
The present invention relates to a method and apparatus for providing digital background calibration for mismatches in M-channel time-interleaved ADCs(TI-ADCs), more specifically providing a pure digital blind calibration technique for offset mismatch, gain mismatch and time mismatch, which are essentially incurred by utilizing a time-interleaved analog-digital converter in systems having to process data with high speeds. Wherein the offset mismatch and gain mismatch are corrected based on statistical characteristics of the digital signals which are sampled and outputted in channel by channel, and the time mismatch is corrected based on a derivative filter and a delay filter. Thereby the present invention relating to a method and apparatus for digital background calibration enables the hardware complexity to be reduced and the efficiency of hardware resource to be increased. The pure digital background calibration of mismatches base on addition, subtraction and multiplication operations is also independent of foundaries and processes, and significantly reduces the design complexity.
Chosun University | Date: 2016-10-25
Provided is a rapid manufacturing process of ferrous and non-ferrous parts using a plasma electron beam in which the plasma electron beam is workable even in a low vacuum pressure environment and has a relatively large radiation range, productivity of the process is improved as a high-power beam can be emitted to a ferrous and non-ferrous powder, and production costs are reduced due to low maintenance and manufacturing costs.
Hyundai Motor Company, Kia Motors, Chosun University and Snu R&Db Foundation | Date: 2015-03-26
A method of transmitting K messages using divided message authentication codes (MACs) in a controller area network (CAN) includes: generating a MAC using a first message and a specific MAC, performing a first operation with respect to j using j-th messages subsequent to the first message and a second MAC part of the generated MAC, performing a second operation with respect to j using a result of the performed first operation and a j-th subblock subsequent to a first MAC subblock among K MAC subblocks obtained by dividing a first MAC part of the generated MAC, transmitting the first message along with the first MAC subblock, and transmitting K-1 j-th messages in an order of j, each of the j-th messages being transmitted along with a j-th result of the performed second operation.
Hyundai Motor Company, Kia Motors, Chosun University and Snu R&Db Foundation | Date: 2015-02-26
A method and apparatus for authenticating packets in a controller area network (CAN) are disclosed. The method includes transmitting messages using a mixture of message authentication codes (MACs) in a controller area network (CAN). In addition, a first MAC is generated using a first message and the first MAC is divided into a first MAC part and a second MAC part. A second MAC is generated using a second message and the second MAC is divided into a third MAC part and a fourth MAC part. A linear operation is performed between the second MAC part and the third MAC part to generate a first authentication MAC. The first message is transmitted with the first MAC part and the second message is transmitted with the first authentication MAC.
Konkuk University and Chosun University | Date: 2015-09-17
The present invention relates to a system for fundamentally eliminating skin damage caused by direct radiation of a laser beam on the skin of a user and inducing a somatic sensation on the skin within a safety standard by radiating a pulse laser beam on a medium attached to the skin of the user on which the somatic sensation is desired to be induced. Particularly, the present invention relates to a somatic sensation induction system which can induce a somatic sensation of various feelings delivered to a user by adjusting an absorption coefficient of a medium contacting with the skin of a user, energy intensity and a repetition rate of a radiated laser beam and the like.
Chosun University | Date: 2016-01-16
Wireless power transmitting and receiving apparatuses are described, using a superconducting coil for a resonant coil, and wireless power charging systems using the same. Wireless power charging systems described include a power source, a wireless power transmitter connected with the power source, a wireless power receiver, and a battery connected with the wireless power receiver. The wireless power transmitter includes a source coil connected with the power source, a superconducting transmitting coil into which electricity is induced by a magnetic field generated when electricity flows through the source coil, and a first conductive cooling device connected with the superconducting transmitting coil. The wireless power receiver includes a superconducting receiving coil that uses frequency resonance between the coils, a load coil into which electricity is induced by a magnetic field generated when electricity flows through the superconducting receiving coil, and a second conductive cooling device connected with the superconducting receiving coil.
Chosun University | Date: 2015-10-09
A sensor for measuring biometric information includes a biometric electrode sensing biometric information in a state in which the biometric electrode is in contact with a surface of the skin; and a signal line transmitting the sensed biometric information, wherein the biometric electrode is printed on an inner surface of an item of clothing that comes into contact with a human body.
Chosun University and TAHO Pharmaceuticals Ltd. | Date: 2016-07-20
The present invention provides a transdermal delivery system, which comprises a drug-containing matrix layer comprising: galantamine or its pharmaceutically acceptable salt as an active ingredient; and a styrene-butadiene-styrene copolymer or a styrene-isoprene-styrene copolymer as an adhesive.