1
Paul W Chung, Richard E Matick, Daniel T Ling: Dynamic row buffer circuit for DRAM. International Business Machines, C Lamont Whitham, March 10, 1987: US04649516 (50 worldwide citation)

A dynamic row buffer circuit is disclosed for a dynamic random access memory (DRAM) chip which enables the DRAM chip to be used for special function applications. The dynamic row buffer comprises a row buffer master register and a row buffer slave register. The row buffer master register comprises a ...


2
Paul W Chung, Michael O Jenkins, Stephen A Jove, Klaas B Klaassen, Paik Saber, Jacobus C L van Peppen: Method and circuitry to suppress additive disturbances in data channels. International Business Machines Corporation, Henry E Otto Jr, October 15, 1991: US05057785 (26 worldwide citation)

A method and circuitry for suppressing additive transient disturbances in an analog differential input signal, such disturbances being due, for example, to thermal asperity transients caused by an MR transducer contacting a moving storage surface. The input data signal is algebraically summed with a ...


3
Paul W Chung, Ralph L Gee, Luke C K Lang, Paik Saber: Setting and dynamically adjusting VCO free-running frequency at system level. International Business Machines Corporation, Henry E Otto Jr, May 29, 1990: US04929918 (24 worldwide citation)

A method and means for setting the free-running frequency of a voltage controlled oscillator (VCO) without requiring laser trimming or the like is described. The VCO forms part of an interconnected phase-locked loop (PLL) and frequency-locked loop (FLL). At system power on, the PLL is automatically ...


4
Paul W Chung, Paik Saber: Temperature stable voltage controlled oscillator with super linear wide frequency range. International Business Machines Corporation, Simon K Lee, Henry E Otto Jr, March 14, 1989: US04812784 (16 worldwide citation)

A voltage controlled oscillator (VCO) having high temperature stability and wide voltage/frequency linearity is provided. The VCO comprises a multivibrator being switched by a bipolar type device, and temperature fluctuations of the bipolar type means are compensated by a FET current source coupled ...


5
John E Gersbach, Paul W Chung: Assertive latching flip-flop. International Business Machines Corporation, Calfee Halter & Griswold, February 21, 1995: US05391935 (12 worldwide citation)

An assertive latching flip-flop circuit is provided which prevents the occurrence of metastable outputs. The circuit comprises a single flip-flop which is comprised of standard switching transistors which are switched by a clocking mechanism having no additionally introduced delay. The circuit inclu ...


6
Paul W Chung, Karl R Hense, Kim Y Nguyen: BiCMOS analog-to-digital converter with minimized metastability. International Business Machines Corporation, Henry E Otto Jr, April 30, 1991: US05012246 (12 worldwide citation)

A high performance, low power analog to digital converter is designed in BIFET technology utilizing the high gain, high performance of a bipolar comparator and the low power of a CMOS latch and CMOS encoding logic circuits. Using a FET dynamic latch, metastability is avoided, significantly reducing ...


7
Paul W Chung, Niantsu N Wang: Dynamic edge-triggered latch. International Business Machines Corporation, Simon K Lee, Henry E Otto Jr, February 28, 1989: US04808840 (9 worldwide citation)

An edge-triggered latch is disclosed which has a low setup time and almost no metastability problem. It comprises a dynamic sensing means for detecting the voltage level of the data signal and at least one dynamic buffer for amplifying said detected voltage level into one of two logic levels recogni ...


8
Paul W Chung, John T Contreras: Accurate current source with an adjustable temperature dependence circuit. International Business Machines Corporation, James C Pinter, Jon A Gibbons, Fleit Kain Gibbons Gutman & Bongini P L, January 22, 2002: US06340882 (9 worldwide citation)

An accurate current source with an adjustable temperature dependence. This type of current source is used in silicon Integrated Circuit (IC) designs requiring supporting reference-voltage sources and/or reference-current sources which may be designed with or without temperature dependence. The circu ...


9
Paul W Chung, John E Gersbach, Bac Pham, Karl Hense, Pete Granata: DC centering analog receiver for flash A/D converter. International Business Machines Corporation, Ingrid M Foerster, June 6, 1995: US05422642 (6 worldwide citation)

An analog receiver circuit suitable for use with a flash analog-to-digital converter is described. A first stage of the receiver acts essentially as a voltage follower, receiving the centertap voltage of a flash A/D converter resistor ladder, and maintaining an internal reference voltage substantial ...


10
Eugene M Blaser, Paul W Chung, Ramesh C Varshney: Low power clock generator. International Business Machines Corporation, Sughrue Mion Zinn Macpeak & Seas, January 29, 1985: US04496852 (3 worldwide citation)

A clock generator circuit for producing with very little power dissipation an output clock signal having levels determined by positive and negative power supply levels from an input clock signal having levels determined by the positive power supply level and ground. In a low state of the input clock ...