Patents by Inventor Kwang Il Yeon

Kwang Il Yeon 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: 6182265
    Abstract: A method for encoding a channel using a parallel convolutional encoder is disclosed. The method includes the steps of a first step for performing an encoding operation using a parallel convolutional encoder at the time when a data is inputted into a frame input data register for implementing a channel encoding operation and generating a code symbol, and a second step for storing the thusly generated code symbol into an interleaver RAM which is alternately selected by the frame unit.
    Type: Grant
    Filed: August 19, 1998
    Date of Patent: January 30, 2001
    Assignee: Electronics and Telecommunication Research Institute
    Inventors: In Gi Lim, Kyung Jin Byun, Ki Cheon Han, Kwang Il Yeon, Kyung Soo Kim
  • Patent number: 6170077
    Abstract: A method for encoding a digital communication channel is disclosed. The method includes the steps of first storing a frame data, which is inputted for a channel encoding operation, into an encoder RAM (ERAM0); second addressing the ERAM and storing the data into a register via a multiplexer in accordance with a control of a frame selection signal; third addressing the ERAM for reading the previous input data and storing the read data into the register; fourth selecting an input data among two register output data, inputting the selected input data into the convolutional encoder and generating a code symbol; and fifth selecting one among the code symbols and obtaining an output of the channel encoder that completed the convolutional encoding and interleaving operations.
    Type: Grant
    Filed: August 18, 1998
    Date of Patent: January 2, 2001
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: In Gi Lim, Seong Bong Lee, Kwang Il Yeon, Kyung Soo Kim
  • Patent number: 6138132
    Abstract: A high speed ROM-based Nyquist FIR filter which is capable of enhancing a modulation speed without increasing the operational frequency of the filter by overcoming the problems encountered in the conventional digital modulation ROM-based FIR filter. Therefore, it is possible to increase the modulation speed by the interpolation ratio without increasing the operational frequency of the filter compared to the method of using a conventional FIR filter using one ROM. Accordingly, the high speed ROM-based Nyquist FIR filter according to the present invention is well adaptive to the modulation FIR filter of a broadband digital communication which requires a high speed data processing capability.
    Type: Grant
    Filed: June 16, 1998
    Date of Patent: October 24, 2000
    Assignees: Electronics and Telecommunications Research Institute, Korea Telecom
    Inventors: Seong Bong Lee, In Kang, Kwang Il Yeon, Kyung Soo Kim
  • Patent number: 6069574
    Abstract: A hadamard code generation circuit is disclosed. The circuit includes a start reset signal generator for generating a start reset signal START.sub.-- RESET when a 6-bit output signal REF.sub.-- C from the 6-bit reference counter, a higher 4-bit index output signal H(5:2) of the 6-bit register and a 2-bit value from a ground circuit are identical; a "0" value force allocation unit for outputting a FORCE.sub.-- 0.sub.-- DEL signal for forcibly allocating all values of the 0th column to "0" when a 4-bit output signal REF.sub.-- C (5:2) from the 6-bit reference counter and a 4-bit value from the ground circuit are identical; a 2-bit counter for receiving the start reset signal and an external clock signal, outputting lowest bit signals C1 and C0 and outputting a carry-out signal; a 4-bit counter operated in accordance with a result that an inverted FORCE.sub.
    Type: Grant
    Filed: August 24, 1998
    Date of Patent: May 30, 2000
    Assignees: Electronics and Telecommunications Research Institute, Korea Telecom
    Inventors: Ik Soo Eo, Kwang Il Yeon, Kyung Soo Kim
  • Patent number: 5974102
    Abstract: In case microcontroller and digital signal processing blocks are used together in one chip, there has been a problem in which the synchronization of the clocks are not consistent with each other when sending a signal from one block to another. In addition, when a reference clock is activated during a change of input signal, an incomplete interval has occurred. Accordingly, in order to solve the above mentioned problem, the present invention discloses a synchronizing circuit which uses a latch circuit("RS") consisted of NAND gates to synchronize an asynchronous input data and a reference clock, thereby solving the problem in which an incomplete interval occurs.
    Type: Grant
    Filed: September 15, 1997
    Date of Patent: October 26, 1999
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: Ik Soo Eo, Kwang Il Yeon, In Gi Lim
  • Patent number: 5727029
    Abstract: The present invention relates in general to a channel CODEC to increase the transmitting effect on a communication channel of a communication system, and more specifically to a branch metric module of a viterbi decoder. The module includes an operator for operating and outputting the differential magnitude of two signals, one signal being a code word generated to perform the viterbi decode and the other being a signal transmitted through the channel. An adder sums and outputs the data which is outputted to it from the operator. A receiving code word converter converts the magnitude of any of bits by the linear sampling quantization process, and non-linearly converts it in accordance with a preestimated or predetermined format. A number of operators calculate the magnitude between two signals at the absolute value to convert the magnitude of an inputted generative code word and the magnitude of the non-linear converted receiving code word.
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: March 10, 1998
    Assignee: Electronics and Telecommunications Research Institute
    Inventors: In-San Jeon, Ik-Su Eo, In-Ki Lim, Kwang-Il Yeon, Jae-Seok Kim