Patents by Inventor Jong K. Kim
Jong K. Kim 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).
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Patent number: 6831799Abstract: A differential amplifier circuit for amplifying an input signal and for providing an output signal representative of the input signal includes first and second amplifier circuits, and first and second coupling circuits. The first and second amplifier circuits each include first and second transistors, a resistor, and a current generator. The first coupling circuit includes a transistor, a capacitor, and a current generator, and couples a first input signal node to the first transistor of the second amplifier circuit. The second coupling circuit includes a transistor, a capacitor, and a current generator, and couples a second input signal node to the first transistor of the first amplifier circuit.Type: GrantFiled: November 29, 2000Date of Patent: December 14, 2004Assignee: Agere Systems Inc.Inventors: Elango Pakriswamy, Jong K. Kim, Michael P. Straub
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Patent number: 6665135Abstract: A disk drive system including a write circuit for controlling current through a magnetic write head includes an H-switch circuit and a pulse-mode power supply circuit. The H-switch circuit controls direction of current through the magnetic write head. The pulse-mode power supply circuit is connected to the H-switch circuit for providing a higher voltage pulse at a beginning of a switching event of the H-switch circuit to accelerate a change in direction of current through the write head, followed by a lower voltage until a next switching event.Type: GrantFiled: June 8, 2001Date of Patent: December 16, 2003Assignee: Agere Systems Inc.Inventors: Jong K. Kim, Elanguvan Nainar
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Patent number: 6650494Abstract: A disk drive system including a write circuit for controlling current through a magnetic write head includes an H-switch circuit and a charge-pumping circuit. The H-switch circuit controls direction of current through the magnetic write head. The charge-pumping circuit is connected to the H-switch circuit for storing energy during a first state of the H-switch circuit, and delivering energy upon switching from the first state to a second state of the H-switch circuit to accelerate a change in direction of current through the write head.Type: GrantFiled: June 8, 2001Date of Patent: November 18, 2003Assignee: Agere Systems Inc.Inventor: Jong K. Kim
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Patent number: 6650182Abstract: A non-linear transconductance amplifier includes a differential input stage and a non-linear transconductance stage operatively coupled to the differential input stage. The differential input stage includes first and second inputs forming a non-inverting input and an inverting input, respectively, of the amplifier for receiving an input differential signal. The non-linear transconductance stage generates an output of the amplifier having a linear transconductance that is substantially zero when the input differential signal is within a predetermined range and a non-linear large transconductance when the input differential signal is outside the predetermined range. The amplifier provides improved response time to widely varying load conditions while possessing a low loop bandwidth. A threshold region where the output of the amplifier is substantially zero can be operatively adjusted and tightly controlled.Type: GrantFiled: December 14, 2001Date of Patent: November 18, 2003Assignee: Agere Systems Inc.Inventors: Jong K. Kim, Elangovan Nainar, Michael P. Straub
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Patent number: 6605994Abstract: A differential amplifier with an emitter follower input stage includes an RC network which provides negative common mode feedback to stabilize the emitter follower stage. The feedback network provides negative common mode feedback from collector to base of the emitter follower transistors.Type: GrantFiled: May 11, 2001Date of Patent: August 12, 2003Assignee: Agere Systems Inc.Inventors: Jong K. Kim, Elangovan Nainar
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Publication number: 20030112069Abstract: A non-linear transconductance amplifier includes a differential input stage and a non-linear transconductance stage operatively coupled to the differential input stage. The differential input stage includes first and second inputs forming a non-inverting input and an inverting input, respectively, of the amplifier for receiving an input differential signal. The non-linear transconductance stage generates an output of the amplifier having a linear transconductance that is substantially zero when the input differential signal is within a predetermined range and a non-linear large transconductance when the input differential signal is outside the predetermined range. The amplifier provides improved response time to widely varying load conditions while possessing a low loop bandwidth. A threshold region where the output of the amplifier is substantially zero can be operatively adjusted and tightly controlled.Type: ApplicationFiled: December 14, 2001Publication date: June 19, 2003Inventors: Jong K. Kim, Elangovan Nainar, Michael P. Straub
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Publication number: 20020196573Abstract: A disk drive system including a write circuit for controlling current through a magnetic write head includes an H-switch circuit and a pulse-mode power supply circuit. The H-switch circuit controls direction of current through the magnetic write head. The pulse-mode power supply circuit is connected to the H-switch circuit for providing a higher voltage pulse at a beginning of a switching event of the H-switch circuit to accelerate a change in direction of current through the write head, followed by a lower voltage until a next switching event.Type: ApplicationFiled: June 8, 2001Publication date: December 26, 2002Applicant: Agere Systems Guardian Corp.Inventors: Jong K. Kim, Elanguvan Nainar
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Publication number: 20020186578Abstract: A disk drive system including a write circuit for controlling current through a magnetic write head includes an H-switch circuit and a charge-pumping circuit. The H-switch circuit controls direction of current through the magnetic write head. The charge-pumping circuit is connected to the H-switch circuit for storing energy during a first state of the H-switch circuit, and delivering energy upon switching from the first state to a second state of the H-switch circuit to accelerate a change in direction of current through the write head.Type: ApplicationFiled: June 8, 2001Publication date: December 12, 2002Applicant: Agere Systems Guardian Corp.Inventor: Jong K. Kim
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Publication number: 20020175753Abstract: A differential amplifier with an emitter follower input stage includes an RC network which provides negative common mode feedback to stabilize the emitter follower stage. The feedback network provides negative common mode feedback from collector to base of the emitter follower transistors.Type: ApplicationFiled: May 11, 2001Publication date: November 28, 2002Applicant: Agere Systems Guardian Corp.Inventors: Jong K. Kim, Elangovan Nainar
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Publication number: 20020093752Abstract: A differential amplifier circuit for amplifying an input signal and for providing an output signal representative of the input signal includes first and second amplifier circuits, and first and second coupling circuits. The first and second amplifier circuits each include first and second transistors, a resistor, and a current generator. The first coupling circuit includes a transistor, a capacitor, and a current generator, and couples a first input signal node to the first transistor of the second amplifier circuit. The second coupling circuit includes a transistor, a capacitor, and a current generator, and couples a second input signal node to the first transistor of the first amplifier circuit.Type: ApplicationFiled: November 29, 2000Publication date: July 18, 2002Applicant: Lucent Technologies Inc.Inventors: Elango Pakriswamy, Jong K. Kim, Michael P. Straub
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Patent number: 5637524Abstract: A method for forming wells of a semiconductor device, being capable of removing the topology between n- and p-well regions. The method of the present invention provides a twin well structure wherein the n-well region has a higher level than the p-well region. This method includes the steps of sequentially forming a buffering film and an oxidizable film over a semiconductor substrate, forming an anti-oxidation film over the oxidizable film, removing a portion of the anti-oxidation film disposed at a first well region of the semiconductor substrate, implanting impurity ions in the first well region of the semiconductor substrate and annealing the resulting structure, thereby forming a first well in the substrate, removing the anti-oxide film and the oxidizable film both disposed at a second well region of the substrate, and implanting impurity ions in the second well region of the semiconductor substrate and annealing the resulting structure, thereby forming a second well in the substrate.Type: GrantFiled: January 3, 1996Date of Patent: June 10, 1997Assignee: LG Semicon Co., Ltd.Inventors: Chang J. Lee, Jong K. Kim
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Patent number: 5607865Abstract: A structure and fabrication method for a thin film transistor which is suitable for an SRAM memory cell. The thin film transistor structure includes an insulating substrate and a semiconductor layer formed as a wall on the insulation substrate. A gate insulation film is formed on the semiconductor layer and over the entire surface of the insulation substrate. A gate electrode formed on the gate insulation film at the center part of the semiconductor layer. Impurity regions are formed in the semiconductor layer on both sides of the gate electrode.Type: GrantFiled: January 27, 1995Date of Patent: March 4, 1997Assignee: Goldstar Electron Co., Ltd.Inventors: Jong M. Choi, Jong K. Kim
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Patent number: 5546132Abstract: An NTSC interference detector is disclosed which includes an NTSC extracting filter for extracting an NTSC signal component from a received I-channel signal; a comparing portion for integrating the NTSC signal output from the NTSC extracting filter for a predetermined period and deciding whether the NTSC signal component is above a first reference value or not; and a control signal generator for adding the signal output from the comparing portion for every horizontal sync, deciding the presence or absence of NTSC interference according to a second reference value, and outputting a control signal according to the presence or absence of NTSC interference, thereby accomplishing a precise detection of NTSC interference.Type: GrantFiled: December 7, 1994Date of Patent: August 13, 1996Assignee: Goldstar Co., Ltd.Inventors: Kyeong S. Kim, Jong K. Kim
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Patent number: 5453136Abstract: A process for manufacturing a high magnetic flux density grain oriented thin electrical steel sheet having superior magnetic properties and for use on transformers is disclosed. Proper amounts of Sn, Cr, Ni and Mo are added into a high magnetic flux density grain oriented electrical steel sheet in which AlN and MnS are utilized for inhibiting the growth of the primary recrystallization grains. The process results in the production of a high magnetic flux density grain oriented thin electrical steel sheet showing a stabilized recrystallization, a high productivity and a high yield.Type: GrantFiled: August 9, 1993Date of Patent: September 26, 1995Assignee: Pohang Iron & Steel Co., Ltd.Inventors: Jong K. Kim, Sung J. Lee, Young J. Yoon
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Patent number: 5443577Abstract: The invention provides an automatically put-on automobile safety belt. Conventionally, it is very troublesome to put on the safety belt, because it has to be manipulated manually. The present invention overcomes these disadvantages. That is, the automatically put-on safety belt includes: a winder for winding a belt 1; a fixed member for securing the other end of the belt; a buckle for being coupled with a hook; and the above three elements constituting the three securing points for the belt. Here, the winder is installed on the automobile floor at the rear of a seat; the fixed member is installed on the automobile floor at a side of the seat; the buckle is installed on the lower edge of a door; a guide ring 8 supported by an elastic rod is installed over the top of the seat; and the hook is provided with guide rings supported by arcuate elastic rods and.Type: GrantFiled: May 6, 1994Date of Patent: August 22, 1995Inventor: Jong K. Kim
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Patent number: 5244790Abstract: The present invention relates to microorgaisms which produce the aroma and flavor of traditional Korean soybean paste. The present invention also relates to a method for producing the soybean paste which comprises inoculating a pure boiled soybean medium with Bacillus subtilis PM3 or Bacillus subtilis SS9 and culturing it at 25.degree.-35.degree. C. for 40-60 days to produce the soybean paste. The present invention further relates to a method for producing the soybean paste, which comprises inoculating a pure boiled soybean medium with Bacillus subtilis PM3 or Bacillus subtilis SS9 together with a fusant yeast ST723-F31 or Bacillus licheniformis SSA3-2M1 and culturing them at 25.degree.-35.degree. C. for 40-60 days to produce the soybean paste.Type: GrantFiled: December 17, 1991Date of Patent: September 14, 1993Inventor: Jong K. Kim
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Patent number: 5210034Abstract: The present invention provides a novel hybridoma obtained from Zygosaccharomyces rouxii and Torulopsis versatilis, which produces the characteristic fragrances of soy sauce, a process for preparation thereof and a process for producing soy sauce by using the same.The hybridoma makes it possible to easily control the production and balancing of aroma components to give good flavor and, to shorten the fermentation term.Type: GrantFiled: May 28, 1991Date of Patent: May 11, 1993Inventor: Jong K. Kim
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Patent number: 5157450Abstract: A copy sheet discharge apparatus for copying machines comprises a copy sheet guide plate fixed to the side of a cover and a copy sheet holding tray displaced below the sheet guide plate. With respect to this discharge apparatus, the image-bearing faces of copy sheets keep facing upwards while the copy sheets are delivered to the tray and the sheets are stacked into piles in the tray in the completed inversed state with the image-bearing face downwards, whereby the immediate checkup of the copy grade before being stacked in the tray is permitted and the cumbersome rearrangement of the order of the copy sheets after being removed from the tray is not needed.Type: GrantFiled: November 2, 1990Date of Patent: October 20, 1992Assignee: Hyundai Electronics Inc. Co., Ltd.Inventor: Jong K. Kim