Patents by Inventor An Sik Choi

An Sik Choi 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: 5835150
    Abstract: An image format converter for an HDTV is disclosed including a decoder for decoding transmitted data to thereby output video data, image format information, picture structure information, an input frequency sync signal, an input vertical sync signal, and an input line sync signal; a sync signal generator for outputs a display line sync signal, display vertical sync signal, process line sync signal, and process vertical sync signal, according to the input image format and displayed image format, using the image format information and the input frequency sync signal output from the decoder, a display format signal externally input in accordance with the display format, and an externally input reference clock; and a format converter for converting the input video signal into a sequential scanning mode of 60 Hz frame rate or an interlaced scanning mode of 60 Hz frame rate, using the information values output from the decoder and sync signal generator.
    Type: Grant
    Filed: October 18, 1995
    Date of Patent: November 10, 1998
    Assignee: LG Electronics Inc.
    Inventor: Jong Sik Choi
  • Patent number: 5828042
    Abstract: A uniform heating apparatus for a microwave oven and a method thereof which are capable of more uniformly heating food by generating various resonant modes based on the kind of food. The apparatus includes an oscillator unit having a wave guide tube for guiding microwaves generated by a magnetron to a lower portion of a heating chamber formed in a microwave oven main body, a resonant mode conversion unit for converting the microwaves guided to the lower portion of the heating chamber to have various resonant modes, a plurality of sensors for detecting the characteristics of food when the microwaves, the resonant mode of which is converted by the resonant mode conversion unit, are supplied to the food in the heating chamber, and a controller for controlling the oscillator unit and the resonant mode conversion unit in accordance with the characteristics of the food detected by the sensors.
    Type: Grant
    Filed: July 11, 1997
    Date of Patent: October 27, 1998
    Assignee: LG Electronics Inc.
    Inventors: Joon Sik Choi, Yang Kyeong Kim
  • Patent number: 5769179
    Abstract: A power steering system for a vehicle having a gear box and an intermediate shaft connected thereto, includes first and second sensors for detecting a speed of the vehicle and a pressure within a cylinder connected to the gear box, and a limiting mechanism for limiting the steering force of the vehicle according to the detection by the first and second sensors.
    Type: Grant
    Filed: June 28, 1996
    Date of Patent: June 23, 1998
    Assignee: Hyundai Motor Company, Ltd.
    Inventor: Myung-Sik Choi
  • Patent number: 5770998
    Abstract: Device for displaying stationary/dynamic status of a car for assuring safety including a car stationary/dynamic state sensing part for detecting a change of speed of a predetermined time period sensed by a rotating slit plate mounted on a speed meter cable connecting device and a photo interrupter; a pulse generating part for converting an analog signal from the state sensing part into digital pulses and applying to an microcomputer; the microcomputer for reading in a driving data programmed in a built-in ROM in response to a signal from the pulse generating part and applying driving pulses to a relevant output port; a red LED operating part and a green LED operating part for turning on respective LEDs in a red LED array part and a green LED array part in response to the microcomputer operation output, thereby running states of car can be expressed in stationary/dynamic states of stop, slow running, acceleration, equal speed running, deceleration and reversing under the control of a microcomputer.
    Type: Grant
    Filed: December 9, 1996
    Date of Patent: June 23, 1998
    Inventors: Jae-Hwan Choi, Ho-Sik Choi
  • Patent number: 5766676
    Abstract: The present invention relates to a method for manufacturing a nickel-metallic hydride electrode. This invention is characterized in that rare earth-nickel-hydrogen-stored alloy powder is molded by plating it with copper without electrolysis, so that mechanical strength, electric conductivity and reaction velocity can be improved by increasing the amount of plating the surface of a molded electrode with copper.
    Type: Grant
    Filed: April 6, 1995
    Date of Patent: June 16, 1998
    Assignee: Gold Star Cable Co., Ltd.
    Inventors: Chung Neun Park, In Sik Choi
  • Patent number: 5726373
    Abstract: A CD video-song accompaniment apparatus reproduces information from a compact disc and contains a CD reproducing portion, a CD-OK reproducing portion, and audio selector, and a main controller. The CD reproducing portion reads audio data from the compact disc and generates an audio signal if the compact disc is a first type of compact disc. On the other hand, the CD reproducing portion reads digital data from the compact disc if the compact disc is a second type of compact disc. The CD-OK reproducing portion inputs the digital data, which contains background image data and music information data, generates a first background image and a second background image based on the background image data, and generates a CD-OK audio signal based on the music information data. The audio selector inputs the audio signal generated by the CD reproducing portion and the CD-OK audio signal generated by the CD-OK reproducing portion and selectively outputs either the audio signal or the CD-OK audio signal.
    Type: Grant
    Filed: December 28, 1995
    Date of Patent: March 10, 1998
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hae-min Choi, Kwang-sik Choi
  • Patent number: 5683253
    Abstract: A song program and a motion picture background image suitable for the mood of the song program are recorded on a recording medium. A video-song accompaniment apparatus employs the recording medium to reproduce the song program and the motion picture background image. The recording medium has a lead-in area, a program area and a lead-out area.
    Type: Grant
    Filed: June 6, 1995
    Date of Patent: November 4, 1997
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Dong-jin Park, Kwang-sik Choi
  • Patent number: 5658007
    Abstract: A buffer apparatus mounted on a torsion axle for preventing a rolling of an automobile. A spring having an upper elastic bar and a lower elastic bar is supported at a hinge pin fixed to a chassis. The lower elastic bar is positioned below the chassis and the upper elastic bar is positioned on a rubber roller rotatably inserted on a middle portion of an U-shaped bar. The U-shaped is pivotally connected to the chassis. A roller fence surrounding the roller is secured to the middle portion of the U-shaped bar. A vertical connecting rod is pivotally connected between a middle portion of the roller fence and a torsion axle. The upper elastic bar restricts an upward movement of the roller and the lower elastic bar supports the chassis to cause the automobile to be traveled under a stable condition.
    Type: Grant
    Filed: April 22, 1996
    Date of Patent: August 19, 1997
    Inventor: Yun-Sik Choi
  • Patent number: 5633688
    Abstract: An external sync image superimposing apparatus synchronizing an analog video signal with digital image data is provided by an apparatus which includes a sync separator for separating an external composite sync signal from an external composite image signal, a clock signal generator for synchronizing the frequency of the clock signal with an external sync signal according to a phase difference between the horizontal sync signal of the separated external composite sync signal and the internal horizontal sync signal and generating the adjusted clock signal, a sync signal generator receiving the adjusted clock signal for generating an internal composite sync signal and a reproduction address signal, a video memory for reading stored digital video information according to the reproduction address signal and a superimposing circuit for converting the digital video information from the video memory into an RGB signal, encoding the internal composite sync signal and the RGB signal as a color television signal, and su
    Type: Grant
    Filed: December 19, 1995
    Date of Patent: May 27, 1997
    Assignee: Samsung Electronics Co., Ltd.
    Inventors: Hae-min Choi, Bong-hun Song, Kwang-sik Choi
  • Patent number: 5561649
    Abstract: A disk recording medium includes a lead-in area, a program area and a lead-out area. The program area includes: a first track on which a plurality of data signals each of which has a different index from the others is loaded; a second track on which a plurality of programs is loaded, whereby the plurality of programs consists of the sequential combination of the indices of at least one data signal among the plurality of data signals and each program has a different index from the others; a third track on which a data index table comprising the indices of the respective data signals and initial address information is loaded; and a fourth track on which a program index table comprising the indices of the respective programs and initial address information is loaded.
    Type: Grant
    Filed: April 4, 1994
    Date of Patent: October 1, 1996
    Assignee: Samsung Electronics Co, Ltd.
    Inventors: Rae-hwan Lee, Hwa-jin Jeon, Kwang-sik Choi, Hong-soon Park, Sang-hwa Yun, Kwang-lyeol Song, Hae-min Choi, Deok-hyun Lee, Bong-hun Song, Dong-jin Park, Seong-jin Byeon
  • Patent number: 5546368
    Abstract: A disk recording medium includes a lead-in area, a program area and a lead-out area. More specifically, the program area includes a first track on which a plurality of data signals, each of which has a different index from all of the others, is loaded, a second track on which a plurality of programs are loaded, a third track on which a data index table including the indices of the respective data signals and initial address information are loaded, and a fourth track on which a program index table including the indices of the respective programs and initial address information are loaded. The lead-in area is loaded with a table of contents consisting of the initial address information and a plurality of pointers, each of which is different from all of the others each of which designates the respective tracks of the program area and the initial position of the lead-out area.
    Type: Grant
    Filed: May 31, 1995
    Date of Patent: August 13, 1996
    Assignee: Samsung Electronics Co. Ltd.
    Inventors: Rae-hwan Lee, Hwa-jin Jeon, Kwang-sik Choi, Hong-soon Park, Sang-hwa Yun, Kwang-lyeol Song, Hae-min Choi, Deok-hyun Lee, Bong-hun Song, Dong-jin Park, Seong-jin Byeon