Patents by Inventor Joo-sang Park
Joo-sang Park has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11928575Abstract: An activation function processing method includes processing a first activation function in a first mode by referring to a shared lookup table that includes a plurality of function values of the first activation function; and processing a second activation function in a second mode by referring to the shared lookup table, the second activation function being a different function than the first activation function.Type: GrantFiled: November 2, 2020Date of Patent: March 12, 2024Assignee: SK hynix Inc.Inventors: Yong Sang Park, Joo Young Kim
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Patent number: 9054881Abstract: A Radio Frequency Identification (RFID) tag and an interrogator that support a normal mode and a secure mode, and operating methods thereof are provided. The RFID tag may notify the interrogator of whether a current operating mode of the RFID tag is the normal mode or the secure mode, may perform different inventory processes based on the current operating mode, and may perform an authentication of the interrogator. Here, the RFID tag and the interrogator may also perform a mutual authentication.Type: GrantFiled: May 16, 2011Date of Patent: June 9, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Yeoun Lee, Kang Bok Lee, Heyung Sub Lee, Dong Beom Shin, Hyun Seok Kim, You Sung Kang, Joo Sang Park, Cheol Sig Pyo, Jong Suk Chae
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Patent number: 9004367Abstract: In relation to a security function of a radio frequency identification (RFID) tag, an RFID tag and a method of updating a key of the RFID tag that may manage a key to be used for an access to a reader by storing the key in a memory having a duplex structure, thereby minimizing an update error occurring during a process of updating the key are provided.Type: GrantFiled: November 15, 2013Date of Patent: April 14, 2015Assignee: Electronics and Telecommunications Research InstituteInventors: Sang Yeoun Lee, Joo Sang Park, Heyung Sub Lee, Chan Won Park
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Patent number: 8878650Abstract: In a radio frequency identification (RFID) security reader, by integrating an encryption module that encrypts transmission data and a decryption module that decrypts reception data from an RFID security tag to restore the reception data to original data to a modem, an input/output time period of a processor module that processes a communication protocol in an RFID security system is minimized.Type: GrantFiled: August 15, 2011Date of Patent: November 4, 2014Assignee: Electronics and Telecommunications Research InstituteInventors: Dong-Beom Shin, Heyung Sub Lee, Sang Yeoun Lee, Hyunseok Kim, Su Na Choi, Kang Bok Lee, Joo Sang Park
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Publication number: 20140138448Abstract: In relation to a security function of a radio frequency identification (RFID) tag, an RFID tag and a method of updating a key of the RFID tag that may manage a key to be used for an access to a reader by storing the key in a memory having a duplex structure, thereby minimizing an update error occurring during a process of updating the key are provided.Type: ApplicationFiled: November 15, 2013Publication date: May 22, 2014Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Yeoun LEE, Joo Sang PARK, Heyung Sub LEE, Chan Won PARK
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Publication number: 20140023195Abstract: Provided is a method for authentication between a radio frequency identification (RFID) tag and an interrogator configured to communicate with the RFID tag. An authentication method performed by the interrogator may include: transmitting, to an RFID tag, a challenge command comprising random interrogator information for initializing an encryption engine and challenge interrogator information for authenticating the RFID tag; receiving, from the RFID tag, random tag information, encrypted challenge tag information, and encrypted tag authentication data; initializing the encryption engine based on the random to interrogator information and the random tag information; decrypting the encrypted challenge tag information and the encrypted tag authentication data; and authenticating the RFID tag based on the decrypted challenge tag information, the decrypted tag authentication data, and the challenge interrogator information.Type: ApplicationFiled: July 19, 2013Publication date: January 23, 2014Inventors: Sang Yeoun LEE, Joo Sang Park, Kang Bok Lee
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Publication number: 20120161933Abstract: In a radio frequency identification (RFID) security reader, by integrating an encryption module that encrypts transmission data and a decryption module that decrypts reception data from an RFID security tag to restore the reception data to original data to a modem, an input/output time period of a processor module that processes a communication protocol in an RFID security system is minimized.Type: ApplicationFiled: August 15, 2011Publication date: June 28, 2012Applicant: ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTEInventors: Dong-Beom Shin, Heyung Sub Lee, Sang Yeoun Lee, Hyunseok Kim, Su Na Choi, Kang Bok Lee, Joo Sang Park
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Publication number: 20120032844Abstract: Real-time location tracking apparatus and method using a global positioning system (GPS) signal relay tag is provided. Here, a tag may receive a GPS signal and transmit the received GPS signal to a reader, and the reader may calculate a location of the tag, and thereby a real-time location tracking service may be provided.Type: ApplicationFiled: August 1, 2011Publication date: February 9, 2012Applicant: Electronics and Telecommunications Research instituteInventors: Sang Hyun Mo, Heyung Sub Lee, Jae Heum Lee, Cheol Sig Pyo, Kang Bok Lee, Dong Beom Shin, Seung Il Myong, Joo Sang Park, Hoe Sung Yang, Jong Suk Chae
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Publication number: 20110279235Abstract: A Radio Frequency Identification (RFID) tag and an interrogator that support a normal mode and a secure mode, and operating methods thereof are provided. The RFID tag may notify the interrogator of whether a current operating mode of the RFID tag is the normal mode or the secure mode, may perform different inventory processes based on the current operating mode, and may perform an authentication of the interrogator. Here, the RFID tag and the interrogator may also perform a mutual authentication.Type: ApplicationFiled: May 16, 2011Publication date: November 17, 2011Applicant: Electronics and Telecommunications Research InstituteInventors: Sang Yeoun LEE, Kang Bok Lee, Heyung Sub Lee, Dong Beom Shin, Hyun Seok Kim, You Sung Kang, Joo Sang Park, Cheol Sig Pyo, Jong Suk Chae
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Publication number: 20110099271Abstract: Provided are a system and method for enforcing a radio frequency identification (RFID) event management policy. The system includes a policy definer for defining an RFID event management policy to be used by a client to manage an apparatus on the basis of an RFID event, a policy storage for storing the RFID event management policy, a policy determiner for selecting the RFID event management policy stored in the policy storage using a profile of the client included in an RFID event management policy request when the RFID event management policy request is received from the client, and a policy enforcer converting the selected RFID event management policy according to a standard executable by the client.Type: ApplicationFiled: May 28, 2010Publication date: April 28, 2011Inventors: Joo Sang PARK, Hyo Chan Bang, Hee Sook Mo, Jee Sook Eun, Se Won Oh, Jae Gak Hwang, Jong Suk Chae, Kwang Hoon Kim, Ji Hye Song, Sun Jin Kim, Hyung Jin Ahn
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Publication number: 20090153308Abstract: The present invention relates to a device and method for managing a memory of an RFID tag. The present invention provides an apparatus for managing a user memory of an RFID tag. The apparatus includes a memory usage information storing unit, a memory registration-management unit, and a memory referring unit. The memory usage information storing unit stores memory usage information. The memory registration-management unit searches information regarding an empty region of the user memory by the memory usage information storing unit, provides the searched information to the specific application system, receives memory usage information regarding the specific data that is to be stored in the user memory from the specific application system, and stores and manages the memory usage information regarding the specific data in the memory usage information storing unit, if the specific application system requests the user memory to store specific data.Type: ApplicationFiled: August 13, 2008Publication date: June 18, 2009Applicant: Electronics and Telecommunications Research InstituteInventors: Joo Sang PARK, Yong Joon LEE, Jong-Hyun PARK
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Publication number: 20090006522Abstract: Provided are an integrated interface apparatus and a method for heterogeneous sensor networks. The integrated interface apparatus includes an application system interface for converting a query command of an application system into a sensor network command according to a common message protocol, analyzing a response message with respect to the sensor network command, and transmits the converted command to the application system; and a sensor network interface for converting the sensor network command according to characteristics of the corresponding sensor network, transmitting the converted sensor network command to the corresponding sensor network, converting sensing data of the respective sensor networks according to predefined data format, and transmitting the converted sensing data to the application system interface over the response message with respect to the sensor network command.Type: ApplicationFiled: June 25, 2008Publication date: January 1, 2009Applicants: Electronics and Telecommunications Research Institute, Galim Information TechnologyInventors: Mal-Hee KIM, Kyoung-Woo LEE, Hye-Eun KWON, Joo-Sang PARK, Yong-Joon LEE, Jong-Hyun PARK, Jong-Suk CHAE
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Publication number: 20080042807Abstract: Provided are a Radio Frequency Identification (RFID) reader interface supporting multiprotocol-based heterogeneous readers, and an event management apparatus and method therefor. The interface supports communication between heterogeneous readers and application systems, and remarkably reduces the amount of data to be sent to the application systems through event generation and data filtering.Type: ApplicationFiled: December 12, 2005Publication date: February 21, 2008Inventors: Joo-Sang Park, Tae-Su Cheong, Hye-Jin Park, Yong-Joon Lee
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Patent number: 6242140Abstract: A method for manufacturing a color filter by thermal transfer using a laser beam with uniform energy distribution. The method includes forming a black matrix pattern on a substrate by photolithography. A transfer film having thermal color layers is placed on the substrate, and a laser beam with uniform energy distribution irradiates the transfer film to transfer the color layers onto the substrate. The substrate onto which the color layer has been transferred, is cured at 200˜300° C. Therefore, by using the laser beam with uniform energy distribution, or a laser beam which scans by dithering, for the thermal transfer, the quality of an image formed at the edges of the is improved and the surface roughness is reduced, resulting in an excellent color filter.Type: GrantFiled: June 29, 1999Date of Patent: June 5, 2001Assignee: Samsung SDI Co., Ltd.Inventors: Jang-hyuk Kwon, Si-hyun Lee, Joo-sang Park, Lee-gon Kim, Seong-taek Lee, Young-sook Choi, Tae-min Kang, Kyu-hwan Choi
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Patent number: 6124918Abstract: A flat-panel display device, particularly, a liquid crystal display (LCD) and a plasma display panel (PDP), and manufacturing methods therefor are provided. To form spacers or barrier walls which locate between upper and lower substrates of the LCD or PDP to maintain the gap between two substrates to a predetermined distance, a laser transcription method is used. That is, a donor film including a base film, a light absorption layer and a transcription layer is put on the lower substrate of the LCD, in which a transparent substrate, a transparent electrode and an alignment layer are stacked in sequence, or on the lower substrate of the PDP, in which a transparent substrate, an address electrode and a dielectric layer are stacked in sequence, and then a laser beam is transcribed thereonto to form the spacers or barrier walls having uniform height and width. Therefore, the interval between two substrates is uniform, so that display characteristics can be enhanced through a simple manufacturing process.Type: GrantFiled: September 2, 1999Date of Patent: September 26, 2000Assignee: Samsung Display Devices, Co., Ltd.Inventors: Joo-sang Park, Du-hyeon Noh, Si-hyun Lee
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Patent number: 6099893Abstract: A method of manufacturing a fluorescent layer having a striped or dot pattern for a display device, including the steps of installing a donor film composed of a base film, a light absorbing layer, a buffering layer and a phosphor layer being departed from a substrate by predetermined distance, and irradiating an energy source to the donor film to transfer a phosphor from the phosphor layer to the surface of the substrate and then thermally treating the transferred phosphor. In the method, defects generated by dust or foreign substances are reduced so that manufacturing yield is improved compared to the conventional method. Also, the process is simple so that productivity is enhanced and a high resolution screen is realized.Type: GrantFiled: May 22, 1998Date of Patent: August 8, 2000Assignee: Samsung Display Devices Co., Ltd.Inventors: Si-hyun Lee, Joo-sang Park