Patents by Inventor Kun Han

Kun Han 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).

  • Publication number: 20120267269
    Abstract: A protective case for protecting an electronic device includes a hollow main body to fit the electronic device therein, a support formed on a back of the case. The support includes a first protrusion, and a second protrusion spaced from the first protrusion. The first protrusion defines a first slot, and the second protrusion defines a second slot aligned with the first slot, the first slot and the second slot is for cooperatively receiving a stylus.
    Type: Application
    Filed: July 20, 2011
    Publication date: October 25, 2012
    Applicants: HON HAI PRECISION INDUSTRY CO., LTD., HONG FU JIN PRECISION INDUSTRY(ShenZhen) CO., LTD.
    Inventors: CHIANG-KUO TANG, QIAN-KUN HAN, PING YU
  • Publication number: 20120174049
    Abstract: Disclosed herein are exemplary methods, apparatus, and systems for performing timing-aware automatic test pattern generation (ATPG) that can be used, for example, to improve the quality of a test set generated for detecting delay defects or holding time defects. In certain embodiments, timing information derived from various sources (e.g. from Standard Delay Format (SDF) files) is integrated into an ATPG tool. The timing information can be used to guide the test generator to detect the faults through certain paths (e.g., paths having a selected length, or range of lengths, such as the longest or shortest paths). To avoid propagating the faults through similar paths repeatedly, a weighted random method can be used to improve the path coverage during test generation. Experimental results show that significant test quality improvement can be achieved when applying embodiments of timing-aware ATPG to industrial designs.
    Type: Application
    Filed: October 31, 2011
    Publication date: July 5, 2012
    Inventors: Xijiang Lin, Kun-Han Tsai, Mark Kassab, Chen Wang, Janusz Rajski
  • Patent number: 8051352
    Abstract: Disclosed herein are exemplary methods, apparatus, and systems for performing timing-aware automatic test pattern generation (ATPG) that can be used, for example, to improve the quality of a test set generated for detecting delay defects or holding time defects. In certain embodiments, timing information derived from various sources (e.g. from Standard Delay Format (SDF) files) is integrated into an ATPG tool. The timing information can be used to guide the test generator to detect the faults through certain paths (e.g., paths having a selected length, or range of lengths, such as the longest or shortest paths). To avoid propagating the faults through similar paths repeatedly, a weighted random method can be used to improve the path coverage during test generation. Experimental results show that significant test quality improvement can be achieved when applying embodiments of timing-aware ATPG to industrial designs.
    Type: Grant
    Filed: April 27, 2007
    Date of Patent: November 1, 2011
    Assignee: Mentor Graphics Corporation
    Inventors: Xijiang Lin, Kun-Han Tsai, Mark Kassab, Chen Wang, Janusz Rajski
  • Publication number: 20110245746
    Abstract: The present invention relates to a medical cast and a skin protector. More particularly, the present invention relates to: a medical cast wherein a hardening solution having hydraulicity is impregnated onto a casting fabric and hardened, the casting fabric being woven throughout by a mesh weaving method and having cuffs formed at a part corresponding to a joint area of the human body and at both end parts of the casting fabric so as to prevent a gap between the skin and the cast, a cutting line of small thickness densely woven lengthwise on one side of the casting fabric, and a strength reinforced strip of large thickness densely woven lengthwise on both sides of the cutting line; and a medical skin protector to which a skin protection strip of a soft material is attached to protect the skin from a cutter blade during cutting of the medical cast.
    Type: Application
    Filed: October 27, 2009
    Publication date: October 6, 2011
    Inventors: Choong Ha Lee, Jong Kun Han, Byeong Su Cheon
  • Patent number: 7984354
    Abstract: Improved responses can be generated to scan patterns (e.g., test patterns) for an electronic circuit designs having timing exception paths by more accurately determining the unknown values that propagate to observation points in the circuit, where the response is captured. For instance, the responses are determined more accurately by analyzing the effect of sensitizing a timing exception path during each time frame associated with a scan pattern. Path sensitization can be determined based on observing whether values injected at starting points of the timing exception paths due to signal transitions and glitches propagate to their end points. The response can be updated by masking the affected end points and propagating unknown values further in the circuit to determine whether they are captured at observation points of the circuit. For instance, the methods and systems described herein may result in reduced unknowns, improved test coverage and test compression.
    Type: Grant
    Filed: June 29, 2009
    Date of Patent: July 19, 2011
    Assignee: Mentor Graphics Corporation
    Inventors: Dhiraj Goswami, Kun-Han Tsai, Mark Kassab, Janusz Rajski
  • Patent number: 7946728
    Abstract: A combination signal receiving device includes a printed circuit board, a light source, a light cover, a receiving cover, and at least one signal receiver. The light source is mounted on the printed circuit board. The light cover is lighttight except a light transmissive logo. The light cover covers the light source. The receiving cover surrounds the light cover. The signal receiver is mounted on the printed circuit board beneath the receiving cover, configured for receiving outside signal passing through the receiving cover. Light emitted by the light source is incapable of reaching the signal receiver. The combination signal receiving device does not negatively influence the appearance of an electronic apparatus.
    Type: Grant
    Filed: April 20, 2009
    Date of Patent: May 24, 2011
    Assignees: Hong Fu Jin Precision Industry (ShenZhen) Co., Ltd., Hon Hai Precision Industry Co., Ltd.
    Inventors: Chiang-Kuo Tang, Qian-Kun Han, Gao-Hui Tang, Qiu-Chun Zhao
  • Publication number: 20100274518
    Abstract: Methods of diagnostic test pattern generation for small delay defects are based on identification and activation of long paths passing through diagnosis suspects. The long paths are determined according to some criteria such as path delay values calculated with SDF (Standard Delay Format) timing information and the number of logic gates on a path. In some embodiments of the invention, the long paths are the longest paths passing through a diagnosis suspect and reaching a corresponding failing observation point selected from the failure log, and N longest paths are identified for each of such pairs.
    Type: Application
    Filed: April 27, 2010
    Publication date: October 28, 2010
    Inventors: Ruifeng Guo, Wu-Tung Cheng, Takeo Kobayashi, Kun-Han Tsai
  • Publication number: 20100185908
    Abstract: Speed-path debug techniques based on at-speed scan test patterns. Potential speed paths are identified based upon detected at-speed scan pattern failures and unknown X-value simulation. When the number of identified speed paths is large, the suspect speed paths are ranked.
    Type: Application
    Filed: December 9, 2009
    Publication date: July 22, 2010
    Inventors: Ruifeng Guo, Wu-Tung Cheng, Kun-Han Tsai
  • Publication number: 20100046228
    Abstract: A combination signal receiving device includes a printed circuit board, a light source, a light cover, a receiving cover, and at least one signal receiver. The light source is mounted on the printed circuit board. The light cover is lighttight except a light transmissive logo. The light cover covers the light source. The receiving cover surrounds the light cover. The signal receiver is mounted on the printed circuit board beneath the receiving cover, configured for receiving outside signal passing through the receiving cover. Light emitted by the light source is incapable of reaching the signal receiver. The combination signal receiving device does not negatively influence the appearance of an electronic apparatus.
    Type: Application
    Filed: April 20, 2009
    Publication date: February 25, 2010
    Applicants: HONG FU JIN PRECISION INDUSTRY (ShenZhen) CO., LTD, HON HAI PRECISION INDUSTRY CO., LTD.
    Inventors: CHIANG-KUO TANG, QIAN-KUN HAN, GAO-HUI TANG, QIU-CHUN ZHAO
  • Publication number: 20100048505
    Abstract: A safe, economical, and convenient food drink having the effect of treating, preventing, or improving diabetes or diabetic complications without involving significantly changed dietary life habits is provided. A food or drink is provided for treating, preventing, or improving diabetes or diabetic complications, comprising oligosaccharides at a concentration of 0.15 to 10% by weight wherein the oligosaccarides include mannose molecules linked together with degree of polymerization of 2 to 10 (inclusive).
    Type: Application
    Filed: July 20, 2007
    Publication date: February 25, 2010
    Inventors: Shigeyoshi Fujii, Izumi Takao, Li-kun Han, Asako Ishii, Hiromichi Okuda
  • Publication number: 20090327986
    Abstract: Improved responses can be generated to scan patterns (e.g., test patterns) for an electronic circuit designs having timing exception paths by more accurately determining the unknown values that propagate to observation points in the circuit, where the response is captured. For instance, the responses are determined more accurately by analyzing the effect of sensitizing a timing exception path during each time frame associated with a scan pattern. Path sensitization can be determined based on observing whether values injected at starting points of the timing exception paths due to signal transitions and glitches propagate to their end points. The response can be updated by masking the affected end points and propagating unknown values further in the circuit to determine whether they are captured at observation points of the circuit. For instance, the methods and systems described herein may result in reduced unknowns, improved test coverage and test compression.
    Type: Application
    Filed: June 29, 2009
    Publication date: December 31, 2009
    Inventors: Dhiraj Goswami, Kun-Han Tsai, Mark Kassab, Janusz Rajski
  • Patent number: 7635199
    Abstract: The present invention is related to an illumination device capable of producing ambient light and whose structure can be efficiently manufactured and assembled. The illumination device comprises: a substrate electrically connect to a power supply, a plurality of light sources attached to a surface of the substrate, a reflection body with a reflection surface situated a distance from said plurality of light sources, a shell having a diffusion surface situated a distance from said reflection surface. The illumination device may further comprise a housing for receiving and supporting the substrate and the reflection body. The housing is configured to join with the shell and can be further attached to an external device receiving the ambient light. The light emitted from the light sources is reflected by the reflection body to the diffusion member and then radiates outwardly to the surrounding environment of the shell. The reflection surface of the reflection body is inclined at angle relative to the substrate.
    Type: Grant
    Filed: March 1, 2007
    Date of Patent: December 22, 2009
    Assignee: UPEC Electronics Corp.
    Inventors: Huang-Chen Guo, Chen-Yuan Huang, Chen-Ming Wang, Tzy-Chang Tan, Kun-Han Hsieh, Kai-Chi Chang
  • Patent number: 7555689
    Abstract: Improved responses can be generated to scan patterns (e.g., test patterns) for an electronic circuit design having timing exception paths by more accurately determining the unknown values that propagate to observation points in the circuit, where the response is captured. For instance, the responses are determined more accurately by analyzing the effect of sensitizing a timing exception path during each time frame associated with a scan pattern. Path sensitization can be determined based on observing whether values injected at starting points of the timing exception paths due to signal transitions and glitches propagate to their end points. The response can be updated by masking the affected end points and propagating unknown values further in the circuit to determine whether they are captured at observation points of the circuit. For instance, the methods and systems described herein may result in reduced unknowns, improved test coverage and test compression.
    Type: Grant
    Filed: June 28, 2006
    Date of Patent: June 30, 2009
    Inventors: Dhiraj Goswami, Kun-Han Tsai, Mark Kassab, Janusz Rajski
  • Publication number: 20070288822
    Abstract: Disclosed herein are exemplary methods, apparatus, and systems for performing timing-aware automatic test pattern generation (ATPG) that can be used, for example, to improve the quality of a test set generated for detecting delay defects or holding time defects. In certain embodiments, timing information derived from various sources (e.g. from Standard Delay Format (SDF) files) is integrated into an ATPG tool. The timing information can be used to guide the test generator to detect the faults through certain paths (e.g., paths having a selected length, or range of lengths, such as the longest or shortest paths). To avoid propagating the faults through similar paths repeatedly, a weighted random method can be used to improve the path coverage during test generation. Experimental results show that significant test quality improvement can be achieved when applying embodiments of timing-aware ATPG to industrial designs.
    Type: Application
    Filed: April 27, 2007
    Publication date: December 13, 2007
    Inventors: Xijiang Lin, Kun-Han Tsai, Mark Kassab, Chen Wang, Janusz Rajski
  • Publication number: 20070283202
    Abstract: Methods, apparatus, and systems for performing fault diagnosis are disclosed herein. In certain disclosed embodiments, methods for diagnosing faults from compressed test responses are provided. For example, in one exemplary embodiment, a circuit description of an at least partially scan-based circuit-under-test and a compactor for compacting test responses captured in the circuit-under-test is received. A transformation function performed by the compactor to the test responses captured in the circuit-under-test is determined. A diagnostic procedure for evaluating uncompressed test responses is modified into a modified diagnostic procedure that incorporates the transformation function therein. Computer-readable media comprising computer-executable instructions for causing a computer to perform any of the disclosed methods are also provided.
    Type: Application
    Filed: July 2, 2007
    Publication date: December 6, 2007
    Inventors: Wu-Tung Cheng, Kun-Han Tsai, Yu Huang, Nagesh Tamarapalli, Janusz Rajski
  • Patent number: 7239978
    Abstract: Methods, apparatus, and systems for performing fault diagnosis are disclosed herein. In certain disclosed embodiments, methods for diagnosing faults from compressed test responses are provided. For example, in one exemplary embodiment, a circuit description of an at least partially scan-based circuit-under-test and a compactor for compacting test responses captured in the circuit-under-test is received. A transformation function performed by the compactor to the test responses captured in the circuit-under-test is determined. A diagnostic procedure for evaluating uncompressed test responses is modified into a modified diagnostic procedure that incorporates the transformation function therein. Computer-readable media comprising computer-executable instructions for causing a computer to perform any of the disclosed methods are also provided.
    Type: Grant
    Filed: August 23, 2004
    Date of Patent: July 3, 2007
    Inventors: Wu-Tung Cheng, Kun-Han Tsai, Yu Huang, Nagesh Tamarapalli, Janusz Rajski
  • Patent number: D613951
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: April 20, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Chiang-Kuo Tang, Qian-Kun Han
  • Patent number: D614871
    Type: Grant
    Filed: September 14, 2009
    Date of Patent: May 4, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Chiang-Kuo Tang, Qian-Kun Han
  • Patent number: D617995
    Type: Grant
    Filed: March 27, 2009
    Date of Patent: June 22, 2010
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Ding-Ding Zhang, Chiang-Kuo Tang, Qian-Kun Han, Yan-Ming Chen
  • Patent number: D666616
    Type: Grant
    Filed: March 24, 2011
    Date of Patent: September 4, 2012
    Assignee: Hon Hai Precision Industry Co., Ltd.
    Inventors: Chiang-Kuo Tang, Qian-Kun Han