Patents by Inventor Jurianto Joe
Jurianto Joe 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: 8207901Abstract: An antenna comprises first and second radiating elements for connecting to a first and second potential levels respectively. The first and second potential levels are substantially different for generating an electrostatic field from the first and the second radiating elements. The antenna further comprises first and second field shaping structures for controlling field propagation in a first and second direction respectively. The first and second field shaping structures are interdisplaced for defining a field pathway while the first and second radiating elements are disposed adjacent to the first and second field shaping structures and along the field pathway for directing the electrostatic field in a propagation direction through a liquid medium. More specifically, the propagation direction is defined by the field pathway and substantially perpendicular to at least one of the first and second directions.Type: GrantFiled: January 29, 2008Date of Patent: June 26, 2012Assignee: Agency for Science, Technology and ResearchInventor: Jurianto Joe
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Publication number: 20100060478Abstract: An antenna comprises first and second radiating elements for connecting to a first and second potential levels respectively. The first and second potential levels are substantially different for generating an electrostatic field from the first and the second radiating elements. The antenna further comprises first and second field shaping structures for controlling field propagation in a first and second direction respectively. The first and second field shaping structures are interdisplaced for defining a field pathway while the first and second radiating elements are disposed adjacent to the first and second field shaping structures and along the field pathway for directing the electrostatic field in a propagation direction through a liquid medium. More specifically, the propagation direction is defined by the field pathway and substantially perpendicular to at least one of the first and second directions.Type: ApplicationFiled: January 29, 2008Publication date: March 11, 2010Applicant: Agency for Science, Technology and ResearchInventor: Jurianto Joe
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Patent number: 7054360Abstract: Pulse width modulation of a digital signal using a nonlinear type of pulse generator is described. The nonlinear pulse generator is characterized by its transfer characteristic which has alternating stable and unstable operating regions. The pulse width modulated signal is generated by varying the operating point between among the unstable and stable operating regions.Type: GrantFiled: March 11, 2002Date of Patent: May 30, 2006Assignee: Cellonics Incorporated Pte, Ltd.Inventors: Jurianto Joe, Chwee Mei Wong
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Publication number: 20040161044Abstract: A signal of any physical form corresponding to an information character of an encoding alphabet, is transmitted as an analog waveform defining a symbol, the waveform being cyclical at the symbol rate, to a communication channel and then the signal when received by a receiver is converted to groups of pulses separated by silences, wherein each group of pulses maps to a count corresponding to a character of the encoding alphabet. The groups of pulses are separated by silences of arbitrary duration which are greater than the time between individual pulses. The pulses have a pulse rate greater than the frequency of the symbol. The system permits but does not require communication of relatively narrow bandwidth signals.Type: ApplicationFiled: November 17, 2003Publication date: August 19, 2004Applicant: The National University of SingaporeInventors: Jurianto Joe, Kin Mun Lye
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Patent number: 6724269Abstract: A circuit to generate antipodal PSK signal and a correlator circuit for recovering information from PSK (phase shift keying) UWB transmissions includes providing a circuit component characterized by a transfer function having alternating stable and unstable regions. By setting the operating point in a stable region or an unstable region, a non-oscillatory or an oscillatory output signal can be produced.Type: GrantFiled: August 6, 2002Date of Patent: April 20, 2004Assignee: Cellonics Incorporated Pte., Ltd.Inventor: Jurianto Joe
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Publication number: 20030234696Abstract: A circuit to generate antipodal PSK signal and a correlator circuit for recovering information from PSK (phase shift keying) UWB transmissions includes providing a circuit component characterized by a transfer function having alternating stable and unstable regions. By setting the operating point in a stable region or an unstable region, a non-oscillatory or an oscillatory output signal can be produced.Type: ApplicationFiled: August 6, 2002Publication date: December 25, 2003Inventor: Jurianto Joe
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Patent number: 6661298Abstract: A clock multiplication technique includes driving two oscillatory circuits by an input signal. One of the circuits has an inverted input. The oscillatory circuits are characterized by a transfer function having an unstable region bounded by two stable region. Oscillations produced during operation of each of the circuits in the unstable regions are combined to produce a signal whose frequency is a multiple of the input frequency.Type: GrantFiled: May 21, 2002Date of Patent: December 9, 2003Assignee: The National University of SingaporeInventors: Kin Mun Lye, Jurianto Joe
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Patent number: 6650268Abstract: A multiple receiver approach is disclosed for a pulse decoding communication system, which can enhance system robustness and increase information carrying capacity. Two or more receivers are used to produce groups of pulses from a received signal. In one embodiment, system robustness is enhanced by redundancy. In another embodiment, information capacity is increased by producing independent groups of pulses from one cycle of an analog waveform.Type: GrantFiled: May 23, 2002Date of Patent: November 18, 2003Assignee: The National University of SingaporeInventors: Jurianto Joe, Kin M. Lye
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Patent number: 6633203Abstract: A gated oscillator is provided for digital circuits. The gated oscillator is achieved by the unconventional use of controlling the operating point of a Van der Pol oscillator. Oscillations are achieved by Van der Pol self-oscillation behavior.Type: GrantFiled: April 25, 2000Date of Patent: October 14, 2003Assignee: The National University of SingaporeInventor: Jurianto Joe
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Patent number: 6630897Abstract: Methods and apparatus for detecting ultra wide-band signals using circuitry having nonlinear dynamics characteristics are disclosed. The receiver circuit can be implemented using a simple tunnel diode or using an op-amp to provide dynamic characteristics. The detector can be used in a variety of modulation schemes, including but not limited to an ON-OFF keying scheme, an M-ary pulse position modulation scheme, and a pulse width modulation scheme. The approach requires only a single frame to detect the signal.Type: GrantFiled: August 5, 2002Date of Patent: October 7, 2003Assignee: Cellonics Incorporated PTE LTDInventors: Kay Soon Low, Jurianto Joe
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Publication number: 20030112862Abstract: A method and apparatus to generate an OOK-type of signal for transmitting digital data without having to use conventional mixer and oscillator circuitry as the carrier source is disclosed. The method utilizes a circuit that has a transfer characteristic comprising alternating unstable and stable operating regions, which produce respectively non-oscillatory and oscillatory output. The circuit is further characterized by having an operating point that can drive the circuit into stable or unstable operation based on the digital data. The resulting output signal is an OOK-type of signal suitable for transmission.Type: ApplicationFiled: March 11, 2002Publication date: June 19, 2003Applicant: THE NATIONAL UNIVERSITY OF SINGAPOREInventors: Jurianto Joe, Chwee Mei Wong
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Publication number: 20030086488Abstract: Pulse width modulation of a digital signal using a nonlinear type of pulse generator is described. The nonlinear pulse generator is characterized by its transfer characteristic which has alternating stable and unstable operating regions. The pulse width modulated signal is generated by varying the operating point between among the unstable and stable operating regions.Type: ApplicationFiled: March 11, 2002Publication date: May 8, 2003Applicant: CELLONICS INCORPORATED PTE, LTD.Inventors: Jurianto Joe, Chwee Mei Wong
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Publication number: 20030006925Abstract: A multiple receiver approach is disclosed for a pulse decoding communication system, which can enhance system robustness and increase information carrying capacity. Two or more receivers are used to produce groups of pulses from a received signal. In one embodiment, system robustness is enhanced by redundancy. In another embodiment, information capacity is increased by producing independent groups of pulses from one cycle of an analog waveform.Type: ApplicationFiled: May 23, 2002Publication date: January 9, 2003Applicant: The National University of SingaporeInventors: Jurianto Joe, Kin M. Lye
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Publication number: 20030006850Abstract: A clock multiplication technique includes driving two oscillatory circuits by an input signal. One of the circuits has an inverted input. The oscillatory circuits are characterized by a transfer function having an unstable region bounded by two stable region. Oscillations produced during operation of each of the circuits in the unstable regions are combined to produce a signal whose frequency is a multiple of the input frequency.Type: ApplicationFiled: May 21, 2002Publication date: January 9, 2003Applicant: The National University of SingaporeInventors: Kin Mun Lye, Jurianto Joe
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Publication number: 20020196065Abstract: A method and apparatus that allows an analog waveform to carry multilevel of information is disclosed. This allows information capacity enhancement in pulse decoding communication system by concatenating several information regions in one cycle of analog waveform.Type: ApplicationFiled: April 13, 2001Publication date: December 26, 2002Inventors: Kin Mun Lye, Jurianto Joe
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Publication number: 20020196168Abstract: According to the invention, oscillating signals are generated from analog signals by providing an analog signal having a variable slope or amplitude to a circuit with a variable operating point and having a transfer function characterized by an unstable operating region bounded by a first and a second stable operating region. The unstable operating region contains a first and a second reference point. The circuit is capable of producing an oscillating signal having a variable duty cycle, the duty cycle increasing as the variable operating point is positioned closer to the first reference point, the duty cycle decreasing as the variable operating point is positioned closer to the second reference point. The variable operating point is positioned substantially within the unstable region to produce the oscillating signal. The positioning of the operating point relative to the first and the second reference points is a function of the variable slope or amplitude of the analog signal.Type: ApplicationFiled: July 30, 2001Publication date: December 26, 2002Applicant: The National University of SingaporeInventors: Jurianto Joe, Kin Mun Lye
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Patent number: 6498578Abstract: A method and apparatus for generating pulses that includes a circuit having a dynamical transfer function is disclosed. The circuitry exhibits oscillatory behavior when its operating point is forced to an unstable region of the transfer function by means of manipulating the transfer function. In an embodiment, a voltage source signal is used to manipulate the transfer function of the circuit. By manipulating the transfer function, the operating points can be dynamically set in the stable or the unstable region.Type: GrantFiled: April 19, 2001Date of Patent: December 24, 2002Assignee: The National University of SingaporeInventors: Kay Soon Low, Jurianto Joe
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Patent number: 6498572Abstract: According to the invention, oscillating signals are generated from analog signals by providing an analog signal having a variable slope or amplitude to a circuit with a variable operating point and having a transfer function characterized by an unstable operating region bounded by a first and a second stable operating region. The unstable operating region contains a first and a second reference point. The circuit is capable of producing an oscillating signal having a variable duty cycle, the duty cycle increasing as the variable operating point is positioned closer to the first reference point, the duty cycle decreasing as the variable operating point is positioned closer to the second reference point. The variable operating point is positioned substantially within the unstable region to produce the oscillating signal. The positioning of the operating point relative to the first and the second reference points is a function of the variable slope or amplitude of the analog signal.Type: GrantFiled: July 30, 2001Date of Patent: December 24, 2002Assignee: The National University of SingaporeInventors: Jurianto Joe, Kin Mun Lye
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Publication number: 20020190881Abstract: Methods and apparatus for detecting ultra wide-band signals using circuitry having nonlinear dynamics characteristics are disclosed. The receiver circuit can be implemented using a simple tunnel diode or using an op-amp to provide dynamic characteristics. The detector can be used in a variety of modulation schemes, including but not limited to an ON-OFF keying scheme, an M-ary pulse position modulation scheme, and a pulse width modulation scheme. The approach requires only a single frame to detect the signal.Type: ApplicationFiled: August 5, 2002Publication date: December 19, 2002Applicant: The National University of SingaporeInventors: Kay Soon Low, Jurianto Joe
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Patent number: 6486819Abstract: A decoder for generating output pulses or oscillations in response to input analog waveforms includes a circuit having a variable operating point and having a transfer function characterized by an unstable operating region bounded by a first stable operating region and a second stable operating region. In one embodiment, the circuit is characterized by having a resistive input impedance. The analog waveform forces the operating point of the circuit into its unstable and stable regions to produce oscillatory and non-oscillatory behavior at the circuit's output.Type: GrantFiled: March 13, 2001Date of Patent: November 26, 2002Assignee: The National University of SingaporeInventors: Jonathan Tun Nan Liu, Jurianto Joe, Siong Siew Yong, Kin Mun Lye