Patents by Inventor Chi-Weon Yoon

Chi-Weon Yoon 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: 20080056006
    Abstract: A method for programming a flash memory device is provided, where the flash memory device includes a plurality of memory cells, and where a threshold voltage of each of the memory cells is programmable in any one of plural corresponding data states.
    Type: Application
    Filed: December 21, 2006
    Publication date: March 6, 2008
    Inventors: Kee-Ho Jung, Jae-Yong Jeong, Chi-Weon Yoon
  • Publication number: 20080031050
    Abstract: A flash memory device includes a memory cell array with multiple memory cells, a data buffer, a write driver and a controller. The data buffer stores data to be programmed into the memory cells, the data having sequential data addresses. The write driver programs the data stored in the data buffer into the memory cells during one programming operation. The controller controls operations of the data buffer and the write driver, and performs flexible mapping between addresses of the data buffer and the data addresses based on a first address of the data.
    Type: Application
    Filed: July 11, 2007
    Publication date: February 7, 2008
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventors: Chi-Weon Yoon, Heung-Soo Lim
  • Publication number: 20070189105
    Abstract: A flash memory device includes a memory cell array, an address buffer circuit including address buffers, each address buffer configured to store an address for a random read operation, a read circuit configured to sense data from the memory cell array in response to an address output from the address buffer circuit, an output data latch circuit configured to receive data sensed by the read circuit, and a control logic coupled to the address buffer circuit, the read circuit, and the output data latch circuit, and configured to control the output data latch circuit and the read circuit such that the output data latch circuit outputs first data read from the memory cell array substantially simultaneously as the read circuit senses second data from the memory cell array.
    Type: Application
    Filed: February 12, 2007
    Publication date: August 16, 2007
    Applicant: SAMSUNG ELECTRONICS CO., LTD.
    Inventor: Chi-Weon YOON
  • Publication number: 20070150646
    Abstract: Disclosed is a semiconductor memory device which is operable a pipelined-buffer programming and includes a cell array including a plurality of memory cells, a write driver circuit divided into a plurality of write units, each write unit programming memory cells with a first data, a sense amplifier circuit divided into plurality of read units of the same number as the plurality of write units, each read unit sensing bit lines of the cell array during a program verify operation, a selection circuit for selecting one of the write units and one of the read units in response to a column address and a data input circuit for providing the first data to the selected write unit during a program operation and for receiving verifying data from the selected read unit during the program verify operation.
    Type: Application
    Filed: September 14, 2006
    Publication date: June 28, 2007
    Inventors: Chi-Weon Yoon, Heung-Soo Lim
  • Publication number: 20070147136
    Abstract: An erase operation for a flash memory device includes identifying a sector group including a plurality of sectors based on an address, simultaneously pre-programming the sectors in the sector group, simultaneously erasing the sectors the sector group, and simultaneously post-programming the sectors in the sector group.
    Type: Application
    Filed: August 9, 2006
    Publication date: June 28, 2007
    Inventors: Chi-Weon Yoon, Heung-Soo Lim
  • Patent number: 6907078
    Abstract: Disclosed is a frame buffer structure having a sub-word line way of 9 banks in which a dispersed 9-tile mapping shaped data storing method and a partial activation for the method are possible, the frame buffer structure requiring a low power consumption, and a frame buffer being integrated with a logic to properly correspond to an application region to process an MPEG image signal. A method for storing a compressed MPEG image in the frame buffer, comprises: a first step of dividing an image frame into 8×8 pixels regions; a second step of re-designating the respective divided pixel regions into 9 adjacent blocks regions having a form of 3×3; a third step of mapping the 8×8 pixel regions consisting of the 9 adjacent blocks regions having the form of 3×3 into one column; and a fourth step of dispersion-storing the mapped 9 blocks regions of 8×8 pixel regions in different banks.
    Type: Grant
    Filed: January 28, 2002
    Date of Patent: June 14, 2005
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Hoi-Jun Yoo, Chi-Weon Yoon
  • Publication number: 20020101931
    Abstract: Disclosed is a frame buffer structure having a sub-word line way of 9 banks in which a dispersed 9-tile mapping shaped data storing method and a partial activation for the method are possible, the frame buffer structure requiring a low power consumption, and a frame buffer being integrated with a logic to properly correspond to an application region to process an MPEG image signal. A method for storing a compressed MPEG image in the frame buffer, comprises: a first step of dividing an image frame into 8×8 pixels regions; a second step of re-designating the respective divided pixel regions into 9 adjacent blocks regions having a form of 3×3; a third step of mapping the 8×8 pixel regions consisting of the 9 adjacent blocks regions having the form of 3×3 into one column; and a fourth step of dispersion-storing the mapped 9 blocks regions of 8×8 pixel regions in different banks.
    Type: Application
    Filed: January 28, 2002
    Publication date: August 1, 2002
    Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY
    Inventors: Hoi-Jun Yoo, Chi-Weon Yoon
  • Patent number: 6400640
    Abstract: A Row-After-Column memory addressing method. The memory addressing method changes the order of addressing so as to enhance the efficiency of memory addressing. The Row-After-Column memory addressing method of the present invention comprises the steps of activating a column path by generating the column address when the address is input for data access, and activating a row path by generating the row address according to the address. Therefore, pipeline stall arising from inputting the column address (/CAS) subsequent to input of the row address (/RAS) can be eliminated and the speed of memory access can be enhanced.
    Type: Grant
    Filed: December 18, 2000
    Date of Patent: June 4, 2002
    Assignee: Korea Advanced Institute of Science and Technology
    Inventors: Ramchan Woo, Chi Weon Yoon, Hoi Jun Yoo
  • Publication number: 20010024399
    Abstract: A Row-After-Column memory addressing method. The memory addressing method changes the order of addressing so as to enhance the efficiency of memory addressing. The Row-After-Column memory addressing method of the present invention comprises the steps of activating a column path by generating the column address when the address is input for data access, and activating a row path by generating the row address according to the address. Therefore, pipeline stall arising from inputting the column address (/CAS) subsequent to input of the row address (/RAS) can be eliminated and the speed of memory access can be enhanced.
    Type: Application
    Filed: December 18, 2000
    Publication date: September 27, 2001
    Applicant: Korea Advanced Institute of Science and Technology
    Inventors: Ramchan Woo, Chi Weon Yoon, Hoi Jun Yoo