Patents by Inventor Yu-Sheng Lai

Yu-Sheng Lai 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: 20120229106
    Abstract: A regulator includes a first amplifier, a second amplifier, a current control circuit, a first P-type metal-oxide-semiconductor transistor, a second P-type metal-oxide-semiconductor transistor, and a feedback circuit. The current control circuit includes a controller and at least one switch, and a second terminal of the first P-type metal-oxide-semiconductor transistor is coupled to a second terminal of the second P-type metal-oxide-semiconductor transistor. The regulator utilizes the controller to turn off the at least one switch during operation of the regulator in a light load mode, and the regulator utilizes the controller to turn on the at least one switch in turn when the regulator changes from the light load mode to a heavy load mode. Thus, the regulator can quickly recover a load current in the heavy load mode.
    Type: Application
    Filed: May 3, 2011
    Publication date: September 13, 2012
    Inventors: Yu-Sheng Lai, Feng-Chia Chang, Yu-Chou Ke
  • Publication number: 20120190163
    Abstract: A method for making a dual silicide or germanide semiconductor comprises steps of providing a semiconductor substrate, forming a gate, forming source/drain regions, forming a first silicide, reducing spacers thickness and forming a second silicide. Forming a gate comprises forming an insulating layer over the semiconductor substrate, and forming the gate over the insulating layer. Forming source/drain regions comprises forming lightly doped source/drain regions in the semiconductor substrate adjacent to the insulating layer, forming spacers adjacent to the gate and over part of the lightly doped source/drain regions, and forming heavily doped source/drain regions in the semiconductor substrate. The first silicide is formed on an exposed surface of lightly and heavily doped source/drain regions. The second silicide is formed on an exposed surface of lightly doped source/drain regions. A first germanide and second germanide may replace the first silicide and the second silicide.
    Type: Application
    Filed: May 13, 2011
    Publication date: July 26, 2012
    Applicant: National Applied Research Laboratories
    Inventors: Szu-Hung Chen, Hung-Min Chen, Yu-Sheng Lai, Wen-Fa Wu, Fu-Liang Yang
  • Publication number: 20120169379
    Abstract: A voltage hold circuit includes four switches, an operational amplifier and a capacitor. By turning the switches on and off, the operational amplifier functions as a unity-gain buffer. In the normal operation mode, the positive input end of the operational amplifier is coupled to a node, and the output end of the operational amplifier is coupled to the capacitor. Thus the voltage of the capacitor is equal to the voltage of the node. In the power off mode, the positive input end of the operational amplifier is coupled d to the capacitor, and the output end of the operational amplifier is coupled to the node. Thus the voltage of the node is equal to the voltage of the capacitor. Therefore, the voltage hold circuit is able to hold the voltage of the node in the power down state.
    Type: Application
    Filed: March 18, 2011
    Publication date: July 5, 2012
    Inventors: Yu-Sheng Lai, Feng-Chia Chang
  • Publication number: 20120056652
    Abstract: A method of dynamically adjusting phase-chasing speed for increasing efficiency of a DLL circuit includes detecting an overall loop delay for an input clock signal in the DLL circuit, obtaining an optimal divisor according to the overall loop delay, and in the phase-locking period of the DLL circuit, dividing the frequencies of the input clock signal and a feedback clock signal corresponding to the input clock signal according to the optimal divisor.
    Type: Application
    Filed: February 9, 2011
    Publication date: March 8, 2012
    Inventors: Yu-Sheng Lai, Feng-Chia Chang, Chun Shiah
  • Patent number: 7969253
    Abstract: A VCO includes a reference current module and a clock signal generating module. The reference current module generates a reference current according to a reference voltage. The clock signal generating module generates a clock signal according to the reference current. The reference current module utilizes the negative feed-back mechanism to keep the generated reference current at the predetermined size without being changed with the variation of the process and the bias source.
    Type: Grant
    Filed: July 20, 2009
    Date of Patent: June 28, 2011
    Assignee: Etron Technology, Inc.
    Inventors: Chun Shiah, Cheng-Nan Chang, Yu-Sheng Lai
  • Patent number: 7739110
    Abstract: A method and an apparatus for multimedia data management are disclosed. The method provides an indexing and retrieval scheme for digital photos with speech annotations based on image-like patterns transformed from the recognized syllable candidates. For annotated spoken content, the recognized n-best syllable candidates are transformed into a sequence of syllable-transformed patterns. Eigen-image analysis is further adopted to extract the significant information to reduce the dimensionality. Vector quantization is applied to quantize the syllable-transformed patterns into feature vectors for indexing. The invention of indexing scheme reduces the dimensionality and noise of data, and achieves better performance of 16.26% for speech annotated photo retrieval.
    Type: Grant
    Filed: December 1, 2006
    Date of Patent: June 15, 2010
    Assignee: Industrial Technology Research Institute
    Inventors: Chung-Hsien Wu, Yu-Sheng Lai, Chien-Lin Huang, Chia-Hao Kang
  • Publication number: 20100121804
    Abstract: A personality-sensitive emotion representation system and method thereof are provided. The personality-sensitive emotion representation system comprises a behavior database, a behavior selection module and a behavior modification module. The behavior selection module selects a set of behavior parameters from the behavior database according to an emotion parameter which represents an input emotion. The behavior modification module modifies the set of behavior parameters according to the personality parameter so as to output a set of personality-sensitive behavior parameters.
    Type: Application
    Filed: February 19, 2009
    Publication date: May 13, 2010
    Applicant: INDUSTRIAL TECHNOLOGY RESEARCH INSTITUTE
    Inventors: Che-Wei Kang, Yu-Sheng Lai, Yi-Hsin Cheng
  • Publication number: 20100073062
    Abstract: A VCO includes a reference current module and a clock signal generating module. The reference current module generates a reference current according to a reference voltage. The clock signal generating module generates a clock signal according to the reference current. The reference current module utilizes the negative feed-back mechanism to keep the generated reference current at the predetermined size without being changed with the variation of the process and the bias source.
    Type: Application
    Filed: July 20, 2009
    Publication date: March 25, 2010
    Inventors: Chun Shiah, Cheng-Nan Chang, Yu-Sheng Lai
  • Patent number: 7557310
    Abstract: A system and method for estimating dynamic quantities is provided. The system includes an electronic identification recognition apparatus, a weight measuring apparatus, and a computing apparatus. The electronic identification recognition apparatus can recognize an electronic identification for a corresponding item placed into the system, and the weight measuring apparatus measures a total weight of all items that it carries. The computing apparatus is coupled to the weight measuring apparatus and the electronic identification recognition apparatus, for receiving the total weight, such that the quantity of the item can be estimated and recorded by using the total weights obtained respectively before and after the item is stored or removed and a recognition result from the electronic identification recognition apparatus.
    Type: Grant
    Filed: July 12, 2006
    Date of Patent: July 7, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Yu-Sheng Lai, Je-Wei Liang
  • Patent number: 7538716
    Abstract: The present invention relates to a system and a method for location determination using time differences. The method of the invention comprises the steps of: transmitting a transmission signal by using a directional transmitter rotating at an angular velocity, the transmission signal comprising a transmission identification and the transmitting time; receiving the transmission signal by using an omnidirectional transceiver, and adding a personal identification to the transmission signal to be a response signal; transmitting the response signal; receiving the response signal by using an omnidirectional receiver and recording the receiving time; and calculating the location of the omnidirectional transceiver corresponding to the directional transmitter according to the difference between the receiving time and the transmitting time.
    Type: Grant
    Filed: August 7, 2006
    Date of Patent: May 26, 2009
    Assignee: Industrial Technology Research Institute
    Inventors: Yu-Sheng Lai, Wen-Yang Wang
  • Publication number: 20070288237
    Abstract: A method and an apparatus for multimedia data management are disclosed. The method provides an indexing and retrieval scheme for digital photos with speech annotations based on image-like patterns transformed from the recognized syllable candidates. For annotated spoken content, the recognized n-best syllable candidates are transformed into a sequence of syllable-transformed patterns. Eigen-image analysis is further adopted to extract the significant information to reduce the dimensionality. Vector quantization is applied to quantize the syllable-transformed patterns into feature vectors for indexing. The invention of indexing scheme reduces the dimensionality and noise of data, and achieves better performance of 16.26% for speech annotated photo retrieval.
    Type: Application
    Filed: December 1, 2006
    Publication date: December 13, 2007
    Inventors: Chung-Hsien Wu, Yu-Sheng Lai, Chien-Lin Huang, Chia-Hao Kang
  • Publication number: 20070139257
    Abstract: The present invention relates to a system and a method for location determination using time differences. The method of the invention comprises the steps of: transmitting a transmission signal by using a directional transmitter rotating at an angular velocity, the transmission signal comprising a transmission identification and the transmitting time; receiving the transmission signal by using an omnidirectional transceiver, and adding a personal identification to the transmission signal to be a response signal; transmitting the response signal; receiving the response signal by using an omnidirectional receiver and recording the receiving time; and calculating the location of the omnidirectional transceiver corresponding to the directional transmitter according to the difference between the receiving time and the transmitting time.
    Type: Application
    Filed: August 7, 2006
    Publication date: June 21, 2007
    Inventors: Yu-Sheng Lai, Wen-Yang Wang
  • Publication number: 20070122035
    Abstract: A system and method for estimating dynamic quantities is provided. The system includes an electronic identification recognition apparatus, a weight measuring apparatus, and a computing apparatus. The electronic identification recognition apparatus can recognize an electronic identification for a corresponding item placed into the system, and the weight measuring apparatus measures a total weight of all items that it carries. The computing apparatus is coupled to the weight measuring apparatus and the electronic identification recognition apparatus, for receiving the total weight, such that the quantity of the item can be estimated and recorded by using the total weights obtained respectively before and after the item is stored or removed and a recognition result from the electronic identification recognition apparatus.
    Type: Application
    Filed: July 12, 2006
    Publication date: May 31, 2007
    Applicant: Industrial Technology Research Institute
    Inventors: Yu-Sheng Lai, Je-Wei Liang