Patents by Inventor Eun Ho Choi

Eun Ho Choi 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).

  • Patent number: 8158838
    Abstract: The novel C dialdehyde compound which can be efficiently utilized in the synthesis of carotenoid compounds based on the sulfone chemistry, the preparation method of the same, and the expeditious and practical synthetic processes for lycopene and ?-carotene by the use of the above novel compound are disclosed. The syntheses of lycopene and ?-carotene are characterized by the processes of the coupling reaction between two equivalents of geranyl sulfone or cyclic geranyl sulfone and the above C dialdehyde, the functional group transformation reactions of the diol in the resulting C 40 coupling products to X's (either halogens or ethers), and the double elimination reactions of the functional groups of the benzenesulfonyl and X to produce the fully conjugated polyene chain of the carotenoids.
    Type: Grant
    Filed: March 14, 2011
    Date of Patent: April 17, 2012
    Assignee: Myongji University Industry and Academia Cooperation
    Inventors: Sang Ho Koo, Eun Ho Choi, Joo-Won Suh
  • Publication number: 20120057541
    Abstract: A scheduling method in a wireless communication system using a dual cell. The method includes determining a scheduling metric value of a user equipment (UE) with respect to each of at least two carriers. The method also includes determining a priority of the UE based on the scheduling metric value, per carrier. The method further includes selecting a UE according to the priority of the UE per carrier. The method also includes determining whether the selected UE has the same priority per carrier, and when the selected UE has the same priority, randomly selecting at least one carrier and allocating a resource to the UE based on the selected carrier.
    Type: Application
    Filed: September 7, 2011
    Publication date: March 8, 2012
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Eun-Ho Choi, Tai-Suk Kim, Dae-Kwon Jung
  • Publication number: 20110166404
    Abstract: The novel C dialdehyde compound which can be efficiently utilized in the synthesis of carotenoid compounds based on the sulfone chemistry, the preparation method of the same, and the expeditious and practical synthetic processes for lycopene and ?-carotene by the use of the above novel compound are disclosed. The syntheses of lycopene and ?-carotene are characterized by the processes of the coupling reaction between two equivalents of geranyl sulfone or cyclic geranyl sulfone and the above C dialdehyde, the functional group transformation reactions of the diol in the resulting C 40 coupling products to X's (either halogens or ethers), and the double elimination reactions of the functional groups of the benzenesulfonyl and X to produce the fully conjugated polyene chain of the carotenoids.
    Type: Application
    Filed: March 14, 2011
    Publication date: July 7, 2011
    Applicant: Myongji University Industry and Academia Cooperation
    Inventors: Sang Ho Koo, Eun Ho Choi, Joo-Won Suh
  • Publication number: 20110166400
    Abstract: The novel C dialdehyde compound which can be efficiently utilized in the synthesis of carotenoid compounds based on the sulfone chemistry, the preparation method of the same, and the expeditious and practical synthetic processes for lycopene and ?-carotene by the use of the above novel compound are disclosed. The syntheses of lycopene and ?-carotene are characterized by the processes of the coupling reaction between two equivalents of geranyl sulfone or cyclic geranyl sulfone and the above C dialdehyde, the functional group transformation reactions of the diol in the resulting C 40 coupling products to X's (either halogens or ethers), and the double elimination reactions of the functional groups of the benzenesulfonyl and X to produce the fully conjugated polyene chain of the carotenoids.
    Type: Application
    Filed: March 14, 2011
    Publication date: July 7, 2011
    Applicant: Myongji University Industry and Academia Cooperation
    Inventors: Sang Ho Koo, Eun Ho Choi, Joo-Won Suh
  • Publication number: 20110166391
    Abstract: The novel C dialdehyde compound which can be efficiently utilized in the synthesis of carotenoid compounds based on the sulfone chemistry, the preparation method of the same, and the expeditious and practical synthetic processes for lycopene and ?-carotene by the use of the above novel compound are disclosed. The syntheses of lycopene and ?-carotene are characterized by the processes of the coupling reaction between two equivalents of geranyl sulfone or cyclic geranyl sulfone and the above C dialdehyde, the functional group transformation reactions of the diol in the resulting C 40 coupling products to X's (either halogens or ethers), and the double elimination reactions of the functional groups of the benzenesulfonyl and X to produce the fully conjugated polyene chain of the carotenoids.
    Type: Application
    Filed: March 14, 2011
    Publication date: July 7, 2011
    Applicant: Myongji University Industry and Academia Cooperation
    Inventors: Sang Ho Koo, Eun Ho Choi, Joo-Won Suh
  • Publication number: 20110122505
    Abstract: A lens system and an image capturing device having the same include a first lens group having a positive refractive power, a second lens group having a negative refractive power, a third lens group having a positive refractive power, a fourth lens group having a positive refractive power, and a fifth lens group being exchangeable with the third lens group.
    Type: Application
    Filed: November 5, 2010
    Publication date: May 26, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Eun-ho Choi
  • Publication number: 20110122252
    Abstract: A digital image processing apparatus including an infrared (IR) cut filter and a visible light cut filter that are arranged on an optical axis between a lens unit and an image sensor, and that are selectively retractable from the optical axis, a filter driver that drives the IR cut filter and the visible light cut filter, a first image information acquiring unit that acquires first image information transmitted through the IR cut filter, a second image information acquiring unit that acquires second image information transmitted through the visible light cut filter, and an image synthesizing unit that extracts a synthesized image from the first image information and the second image information, in a low-illumination mode.
    Type: Application
    Filed: November 19, 2010
    Publication date: May 26, 2011
    Applicant: Samsung Electronics Co., Ltd.
    Inventors: Eun-ho Choi, Seon-ho Lee, Seung-yong Kim, Jang-hoo Yoo
  • Patent number: 7928266
    Abstract: The novel C dialdehyde compound which can be efficiently utilized in the synthesis of carotenoid compounds based on the sulfone chemistry, the preparation method of the same, and the expeditious and practical synthetic processes for lycopene and ?-carotene by the use of the above novel compound are disclosed. The syntheses of lycopene and ?-carotene are characterized by the processes of the coupling reaction between two equivalents of geranyl sulfone or cyclic geranyl sulfone and the above C dialdehyde, the functional group transformation reactions of the diol in the resulting C 40 coupling products to X's (either halogens or ethers), and the double elimination reactions of the functional groups of the benzenesulfonyl and X to produce the fully conjugated polyene chain of the carotenoids.
    Type: Grant
    Filed: May 23, 2007
    Date of Patent: April 19, 2011
    Assignee: Myongji University Industry and Academia Cooperation
    Inventors: Sang Ho Koo, Eun Ho Choi
  • Publication number: 20090318732
    Abstract: The novel C dialdehyde compound which can be efficiently utilized in the synthesis of carotenoid compounds based on the sulfone chemistry, the preparation method of the same, and the expeditious and practical synthetic processes for lycopene and ?-carotene by the use of the above novel compound are disclosed. The syntheses of lycopene and ?-carotene are characterized by the processes of the coupling reaction between two equivalents of geranyl sulfone or cyclic geranyl sulfone and the above C dialdehyde, the functional group transformation reactions of the diol in the resulting C 40 coupling products to X's (either halogens or ethers), and the double elimination reactions of the functional groups of the benzenesulfonyl and X to produce the fully conjugated polyene chain of the carotenoids.
    Type: Application
    Filed: May 23, 2007
    Publication date: December 24, 2009
    Inventors: Sang Ho Koo, Eun Ho Choi
  • Patent number: 6813272
    Abstract: A routing method with routing algorithms applicable to a one-level hierarchical network, including a first algorithm in which a shortest one among all paths established in association with one destination is selected, a second algorithm in which the first method is conducted in a distributed fashion to achieve a fast routing, and a third algorithm in which any one of paths established in association with one destination may be selected as a shortest path when the QoS value calculated in association therewith is more optimum than a required reference QoS value, for preventing problems caused by errors at the single path. The method also provides algorithms that are modified versions of the second and third algorithm for the multi-level hierarchical network. Accordingly, the method is advantageous in that users can select an algorithm, most suitable for the system environment, from the above algorithms.
    Type: Grant
    Filed: June 16, 2000
    Date of Patent: November 2, 2004
    Assignee: Korea Telecommunication Authority
    Inventors: Sun Shin An, Young Hyun Yoon, Eun Ho Choi, Hong Beom Jeon, Doo Seok Kim