Patents by Inventor Chan Jang

Chan Jang 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: 20110001463
    Abstract: A transceiver for controlling a swing width of an output voltage includes a transmitter and a receiver for receiving an output voltage of a transmitter. The transmitter includes a first signal converter that outputs changed data generated by changing a voltage level of data in response to a mode control signal for selecting a test mode or a normal mode, an output voltage control circuit for controlling a voltage level of an output node of the transmitter in response to the changed data, and a first termination circuit for supplying a changed power supply voltage generated by changing a voltage level of a power supply voltage of the output node of the transmitter, or is turned off, in response to a test mode enable signal or the changed data. The receiver includes a second termination circuit that operates as a resistor having a resistance value that varies in response to the test mode enable signal or a test mode disable signal.
    Type: Application
    Filed: January 6, 2010
    Publication date: January 6, 2011
    Inventors: Young-Chan Jang, Kyoung-su Lee, Hun-dae Choi
  • Publication number: 20100324734
    Abstract: A robot cleaner that travels straight through alignment of drive wheels to move the robot cleaner and a method of controlling travel of the same. Information related to a movement angle of the robot cleaner is detected from angle information of a caster wheel rotating depending upon a state of a floor, such as a carpet in a state in which texture of the carpet occurs in one direction, and, when the movement angle of the robot cleaner deviates due to slippages of the drive wheels, rates of rotation of the drive wheels are adjusted to correct the slippages of the drive wheels such that the robot cleaner easily travels straight.
    Type: Application
    Filed: June 15, 2010
    Publication date: December 23, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Hwa Lee, Jae Man Joo, Dong Won Kim, Jun Pyo Hong, Woo Ram Chung, Jae Young Jung, Kyung Hwan Yoo, Hwi Chan Jang, Jang Youn Ko, Jeong Gon Song, Sam Jong Jeung
  • Publication number: 20100324736
    Abstract: A robot cleaner system is described including a docking station to form a docking area within a predetermined angle range of a front side thereof, to form docking guide areas which do not overlap each other on the left and right sides of the docking area, and to transmit a docking guide signal such that the docking guide areas are distinguished as a first docking guide area and a second docking guide area according to an arrival distance of the docking guide signal. The robot cleaner system also includes a robot cleaner to move to the docking area along a boundary between the first docking guide area and the second docking guide area when the docking guide signal is sensed and to move along the docking area so as to perform docking when reaching the docking area.
    Type: Application
    Filed: June 15, 2010
    Publication date: December 23, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung Hwan Yoo, Jae Man Joo, Dong Won Kim, Jun Hwa Lee, Jun Pyo Hong, Woo Ram Chung, Jae Young Jung, Hwi Chan Jang, Jang Youn Ko, Jeong Gon Song, Sam Jong Jeung
  • Publication number: 20100313364
    Abstract: Disclosed herein are a robot cleaner having an improved travel pattern and a control method thereof. The robot cleaner performs cleaning using zigzag travel as a basic cleaning traveling manner, and then performs cleaning using random travel as a finishing cleaning traveling manner so as to clean areas skipped during the zigzag travel. The robot cleaner performs the zigzag travel while maintaining a designated interval with a travel route proceeding to a wall regardless of a direction proceeding to the wall, and employs an improved zigzag travel method to maintain a zigzag travel pattern, if the robot cleaner senses an obstacle during the zigzag travel.
    Type: Application
    Filed: June 10, 2010
    Publication date: December 16, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo Ram Chung, Jae Man Joo, Dong Won Kim, Jun Hwa Lee, Jun Pyo Hong, Jae Young Jung, Kyung Hwan Yoo, Hwi Chan Jang
  • Publication number: 20100317415
    Abstract: A built-in antenna for a folder type portable terminal includes a main body including a main board, an openable folder rotated at a predetermined angle with respect to the main body, a metallic hinge module rotating the folder on the main body to provide an opening and closing feeling of the folder, a conductor electrically connected to the metallic hinge module, the conductor being disposed inside the folder, and at least one conductive connection unit electrically connected to a broadcasting signal line of the main board, the at least one conductive connection unit being electrically connected to the hinge module through a non-contact coupling.
    Type: Application
    Filed: June 7, 2010
    Publication date: December 16, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Kyung-Jong LEE, Jae-Ho LEE, Byung-Chan JANG, In-Jin HWANG, Seung-Hwan KIM, Weon-Jai CHOI, Kong-Min SA, Sang-Bong SUNG
  • Publication number: 20100309064
    Abstract: A built-in antenna apparatus for a Global Positioning System (GPS) of a portable terminal is provided. The apparatus includes a case frame for forming an exterior of the terminal, a main board fastened by the case frame and having a feeding portion and a ground portion of an antenna radiator, and an antenna radiator having a feeding point and ground point to be electrically connected to the feeding portion and ground portion of the main board, and is curved in a horizontal direction and a vertical direction of the terminal about a center of one upper-side corner of the terminal.
    Type: Application
    Filed: June 9, 2010
    Publication date: December 9, 2010
    Applicant: Samsung Electronics Co., LTD.
    Inventors: Sang-Bong Sung, Kong-Min Sa, Kyung-Jong Lee, Dong-Hwan Kim, Jae-Ho Lee, Byung-Chan Jang
  • Publication number: 20100296352
    Abstract: A memory controller includes an I/O circuit, a read latency detector and a clock domain synchronizer. The I/O circuit transmits a first signal to a semiconductor memory device, receives a reflected signal returned from the semiconductor memory device, and delays the reflected signal in response to a delay selection signal to generate a second signal. The reflected signal is provided by reflection of the first signal from the semiconductor memory device. The read latency detector generates the first signal in response to a system clock signal, and generates a read latency signal in response to the system clock signal, a hold signal, and the second signal. The clock domain synchronizer generates the delay selection signal and the hold signal in response to the system clock signal and the second signal.
    Type: Application
    Filed: May 18, 2010
    Publication date: November 25, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hun-Dae Choi, Young-Chan Jang
  • Patent number: 7840831
    Abstract: Phase correction circuits and methods for reducing phase skew between multiphase clock signals and a semiconductor device including the circuit are provided. The semiconductor device includes a phase correction circuit and an output buffer. The phase correction circuit corrects phase skew between multiphase clock signals and generates skew-corrected clock signals. The output buffer outputs data in synchronization with the skew-corrected clock signals. The phase correction circuit includes a phase corrector, a replication output buffer, a phase detector, and a controller. The phase corrector corrects a duty cycle of a first clock signal, a duty cycle of a second clock signal, and phase skew between the first and second clock signals and generates skew-corrected first and second clock signals. The replication output buffer has the same structure as a data output buffer and outputs replication data in synchronization with the skew-corrected first and second clock signals.
    Type: Grant
    Filed: April 24, 2007
    Date of Patent: November 23, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Chan Jang
  • Publication number: 20100287717
    Abstract: Disclosed herein is an autonomous cleaning machine with a brush cleaning unit to clean a brush unit. The autonomous cleaning machine includes a main body, the brush unit rotatably provided on the main body, first brush cleaning members contacting the brush unit to move foreign substances wound on the brush unit in a lengthwise direction of the brush unit, and second brush cleaning members contacting the brush unit to remove the foreign substances wound on the brush unit from the brush unit.
    Type: Application
    Filed: May 6, 2010
    Publication date: November 18, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Hwi Chan Jang, Dong Won Kim, Woo Bam Chung, Jae Man Joo, Jun Pyo Hong, Jae Young Jung, Kyung Hwan Yoo
  • Publication number: 20100292839
    Abstract: Disclosed herein are a mobile robot system to restrict a traveling region of a robot and to guide the robot to another region, and a method of controlling the same. Only when a remote controller reception module of a beacon senses a signal transmitted from a mobile robot, the sensed result is reported to the mobile robot in the form of a response signal. In addition, the Field-of-View (FOV) of the remote control reception module is restricted by a directivity receiver. Only when the signal transmitted from the mobile robot is sensed within the restricted FOV, the sensed result is reported to the mobile robot.
    Type: Application
    Filed: May 12, 2010
    Publication date: November 18, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Pyo Hong, Kyung Hwan Yoo, Jae Young Jung, Jae Man Joo, Dong Won Kim, Woo Ram Chung, Hwi Chan Jang
  • Publication number: 20100288307
    Abstract: A robot cleaner to perform a cleaning process by changing a traveling pattern according to a cleaning start position and a method for controlling the same are disclosed. The robot cleaner recognizes a current position of the robot cleaner upon receiving the automatic cleaning command. If the automatic cleaning process starts from the charger, the robot cleaner performs the automatic cleaning process using a conventional cleaning method. Otherwise, if the automatic cleaning process starts from the outside of the charger, the robot cleaner changes a traveling pattern, performs the spot cleaning process and then selectively performs the automatic cleaning process.
    Type: Application
    Filed: March 8, 2010
    Publication date: November 18, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Woo Ram Chung, Jae Man Joo, Dong Won Kim, Jun Pyo Hong, Jae Young Jung, Kyung Hwan Yoo, Hwi Chan Jang
  • Patent number: 7821317
    Abstract: A clock generating apparatus includes a clock generator and a controllable delay line. The clock generator receives an external clock signal and generates multiple clock signals having different phases by delaying the external clock signal. The controllable delay line receives one of the multiple clock signals as a first clock signal and delays the first clock signal by a first interval in response to an externally applied control signal. The delayed first clock signal is input to the clock generator.
    Type: Grant
    Filed: June 12, 2008
    Date of Patent: October 26, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-chan Jang
  • Publication number: 20100253386
    Abstract: A semiconductor device transmitting a plurality of data using a multilevel signal includes a parity bit control unit generating a parity bit that varies with a number of data in which a most significant bit (MSB) and least significant bit (LSB) are different. A data conversion unit either inversely outputs the MSB or the LSB, or outputs the data without a change in response to the parity bit. Transmission units transmit data provided by the data conversion unit using the multilevel signal.
    Type: Application
    Filed: December 14, 2009
    Publication date: October 7, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Young-chan JANG
  • Publication number: 20100215216
    Abstract: Disclosed herein is a localization system and method to recognize the location of an autonomous mobile platform. In order to recognize the location of the autonomous mobile platform, a beacon (three-dimensional structure) having a recognizable image pattern is disposed at a location desired by a user, the mobile platform which knows image pattern information of the beacon photographs the image of the beacon and finds and analyzes a pattern to be recognized from the photographed image. A relative distance and a relative angle of the mobile platform are computed using the analysis of the pattern such that the location of the mobile platform is accurately recognized.
    Type: Application
    Filed: February 24, 2010
    Publication date: August 26, 2010
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Jun Pyo Hong, Kyung Hwan Yoo, Jae Man Joo, Dong Won Kim, Woo Bam Chung, Jae Yong Jung, Hwi Chan Jang
  • Publication number: 20100153792
    Abstract: In a circuit and method for correcting skew among a plurality of communication channels used in communicating with a memory circuit, and in a memory controller and memory controlling method, and in a memory system and method, the circuit for correcting skew includes a transmitting circuit for transmitting a reference signal to input ends of the plurality of channels and through the plurality of channels, and a plurality of receiving circuits for receiving at the input ends of the plurality of channels a respective plurality of reflected signals, the reflected signals being reflected from respective output ends of the plurality of channels. A detection circuit receives the reflected signals and detects relative signal propagation time differences between the plurality of channels. A delay circuit coupled to at least one of the channels sets a signal propagation delay in the at least one of the channels based on the detected relative signal propagation time differences.
    Type: Application
    Filed: November 20, 2009
    Publication date: June 17, 2010
    Applicant: Samsung Electronics Co., Ltd.
    Inventor: Young-Chan Jang
  • Patent number: 7724535
    Abstract: A semiconductor device, a method related to the semiconductor device, and a printed circuit board are disclosed. The semiconductor device includes a chip, a package including a plurality of power voltage terminals and a plurality of ground voltage terminals, wherein the chip is disposed in the package. The semiconductor device further includes an impedance circuit connected between a DC component power voltage terminal and a ground voltage, wherein the DC component power voltage terminal is one of the plurality of power voltage terminals, and an AC component interrupter connected between the DC component power voltage terminal and a power voltage. Both the AC component and a DC component of the power voltage are applied to each of the power voltage terminals except the DC component second power voltage terminal, and the ground voltage is applied to each of the ground voltage terminals.
    Type: Grant
    Filed: May 9, 2007
    Date of Patent: May 25, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-Hoon Kim, Jae-Jun Lee, Moon-Jung Kim, Kwang-Soo Park, Young-Chan Jang
  • Publication number: 20100097094
    Abstract: An output circuit having a variable swing level of a terminated output data signal is disclosed. The output circuit includes a control circuit configured to generate a first control signal and a second control signal in response to a voltage swing level selection signal and an output enable signal. The output circuit further includes an output driving circuit configured to, in response to the first and second control signals, perform on-die termination in an input mode and configured to control swing level of a signal output from the output circuit in an output mode.
    Type: Application
    Filed: October 16, 2009
    Publication date: April 22, 2010
    Inventor: Young-Chan Jang
  • Patent number: 7671632
    Abstract: A transmission system and method may be provided. The transmission system may transmit 2-bit data for each transmission line set and each transmission line set may include first, second and/or third transmission lines arranged in order. The first, second and/or third transmission lines may respectively transmit first, second and/or third signals each having one of first, second and/or third values such that a combination of a first electric field between the first and second transmission lines and a second electric field between the second and third transmission lines may be made depending on a logic state of the 2-bit data. The transmission system may transmit differential signals using a smaller number of transmission lines and the transmission system may transmit a larger number of signals in the same circuit area.
    Type: Grant
    Filed: December 27, 2006
    Date of Patent: March 2, 2010
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Jong-hoon Kim, Young-chan Jang, Jae-jun Lee, Kwang-soo Park
  • Publication number: 20090207895
    Abstract: A data transceiver system may include an error corrector. The error corrector may include a plurality of delay units, each delay unit being configured to delay a corresponding data signal among a plurality of data signals by a time in response to a corresponding delay code among a plurality of delay codes and outputting the delayed data signal, an error detector configured to receive the plurality of delay codes, determine whether an error has occurred, and output an error signal according to the determination in a data frame lock operation, and a delay controller configured to set initial values of the plurality of delay codes to a predetermined value, vary and output each of the plurality of delay codes in response to a lock signal, and reset initial values the plurality of delay codes in response to the error signal in the data frame lock operation.
    Type: Application
    Filed: February 12, 2009
    Publication date: August 20, 2009
    Inventors: Hwan-Wook Park, Young-Chan Jang
  • Patent number: 7535293
    Abstract: A preamplifier circuit includes a differential amplifying unit, an offset detection unit and a reference signal generation unit. The differential amplifying unit compares an input signal pair with a reference signal pair to generate an output signal pair. The offset detection unit detects an offset of the output signal pair received from the differential amplifying unit to generate a calibration signal in an offset calibration mode. The reference signal generation unit adjusts the reference signal pair based on the calibration signal, and the reference signal pair is fed-back to the differential amplifying unit.
    Type: Grant
    Filed: February 27, 2007
    Date of Patent: May 19, 2009
    Assignee: Samsung Electronics Co., Ltd.
    Inventor: Young-Chan Jang