Patents by Inventor John Ladd
John Ladd 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: 11926589Abstract: This invention relates to a process for the synthesis of a non-racemic cyclohexene compound of formula (I) by a Diels-Alder reaction of a compound of formula (II) with a compound of formula (III) wherein R1, R2, R3, R4, R5, R6, R7, R8, R9 and Y have the meanings as defined in the description in the presence of a catalyst comprising at least one m-valent metal cation Mm+ wherein the metal M is selected from Scandium (Sc), Yttrium (Y), Lanthanum (La), Cerium (Ce), Praseodymium (Pr), Neodymium (Nd), Promethium (Pm), Samarium (Sm), Europium (Eu), Gadolinium 15 (Gd), Terbium (Tb), Dysprosium (Dy), Holmium (Ho), Erbium (Er), Thulium (Tm), Ytterbium (Yb), Lutetium (Lu), Gallium (Ga) and Indium (In), and m is an integer of 1, 2 or 3, and a chiral ligand of the formula (IV) wherein R10a, R10b, R10c, R10d, R10a?, R10b?, R10c?, R10d?, Z and Z? have the meanings as defined in the description.Type: GrantFiled: July 6, 2020Date of Patent: March 12, 2024Assignees: BASF CORPORATION, CALIFORNIA INSTITUTE OF TECHNOLOGYInventors: Sarah Reisman, Michael Rombola, Carolyn L. Ladd, Martin John McLaughlin, Stephan Zuend, Roland Goetz
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Patent number: 11012649Abstract: A control pulse is generated a first control signal line coupled to a transfer gate of a pixel to enable photocharge accumulated within a photosensitive element of the pixel to be transferred to a floating diffusion node, the first control signal line having a capacitive coupling to the floating diffusion node. A feedthrough compensation pulse is generated on a second signal line of the pixel array that also has a capacitive coupling to the floating diffusion node. The feedthrough compensation pulse is generated with a pulse polarity opposite the pulse polarity of the control pulse and is timed to coincide with the control pulse such that capacitive feedthrough of the control pulse to the floating diffusion node is reduced.Type: GrantFiled: July 3, 2019Date of Patent: May 18, 2021Assignee: Rambus Inc.Inventors: Michael Guidash, Jay Endsley, John Ladd, Thomas Vogelsang, Craig M. Smith
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Patent number: 10798322Abstract: A pixel array within an integrated-circuit image sensor is exposed to light representative of a scene during a first frame interval and then oversampled a first number of times within the first frame interval to generate a corresponding first number of frames of image data from which a first output image may be constructed. One or more of the first number of frames of image data are evaluated to determine whether a range of luminances in the scene warrants adjustment of an oversampling factor from the first number to a second number, if so, the oversampling factor is adjusted such that the pixel array is oversampled the second number of times within a second frame interval to generate a corresponding second number of frames of image data from which a second output image may be constructed.Type: GrantFiled: September 25, 2018Date of Patent: October 6, 2020Assignee: Rambus Inc.Inventors: Craig M. Smith, Frank Armstrong, Jay Endsley, Thomas Vogelsang, James E. Harris, John Ladd, Michael Guidash
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Patent number: 10652493Abstract: A sequence of control voltage levels are applied to a control signal line capacitively coupled to a floating diffusion node of a pixel to sequentially adjust a voltage level of the floating diffusion node. A pixel output signal representative of the voltage level of the floating diffusion node is compared with a reference voltage to identify a first control voltage level of the sequence of control voltage levels for which the voltage level of the floating diffusion node exceeds the reference voltage.Type: GrantFiled: November 20, 2018Date of Patent: May 12, 2020Assignee: Rambus Inc.Inventors: John Ladd, Michael Guidash, Craig M. Smith, Thomas Vogelsang, Jay Endsley, Michael T. Ching, James E. Harris
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Patent number: 10567683Abstract: A pixel circuit within an integrated-circuit image sensor includes a photodiode having a pinning layer of a first conductivity type, a floating diffusion node and a transfer gate disposed between the photodiode and the floating diffusion node. A first control input is coupled to the transfer gate, and a second control input is coupled to the pinning layer of the photodiode to enable the depletion potential of the photodiode to be raised and lowered.Type: GrantFiled: June 3, 2015Date of Patent: February 18, 2020Assignee: Rambus Inc.Inventors: Michael Guidash, John Ladd
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Publication number: 20200007804Abstract: A control pulse is generated a first control signal line coupled to a transfer gate of a pixel to enable photocharge accumulated within a photosensitive element of the pixel to be transferred to a floating diffusion node, the first control signal line having a capacitive coupling to the floating diffusion node. A feedthrough compensation pulse is generated on a second signal line of the pixel array that also has a capacitive coupling to the floating diffusion node. The feedthrough compensation pulse is generated with a pulse polarity opposite the pulse polarity of the control pulse and is timed to coincide with the control pulse such that capacitive feedthrough of the control pulse to the floating diffusion node is reduced.Type: ApplicationFiled: July 3, 2019Publication date: January 2, 2020Inventors: Michael Guidash, Jay Endsley, John Ladd, Thomas Vogelsang, Craig M. Smith
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Patent number: 10356350Abstract: Photocharge is accumulated within an image sensor pixel array during a first exposure interval. At conclusion of the first exposure interval, accumulated photocharge is discarded from a first subset of the pixels to emulate absence of incident light with respect to those pixels. After discarding accumulated photocharge from the first subset of the pixels, first and second readout signals are generated, the first readout signals corresponding to respective pixels not included in the first subset and indicative of photocharge accumulated therein, and the second readout signals corresponding to respective pixels included in the first subset.Type: GrantFiled: July 31, 2018Date of Patent: July 16, 2019Assignee: Rambus Inc.Inventors: Michael Guidash, Jay Endsley, John Ladd, Thomas Vogelsang, Craig M. Smith
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Publication number: 20190166321Abstract: A sequence of control voltage levels are applied to a control signal line capacitively coupled to a floating diffusion node of a pixel to sequentially adjust a voltage level of the floating diffusion node. A pixel output signal representative of the voltage level of the floating diffusion node is compared with a reference voltage to identify a first control voltage level of the sequence of control voltage levels for which the voltage level of the floating diffusion node exceeds the reference voltage.Type: ApplicationFiled: November 20, 2018Publication date: May 30, 2019Inventors: John Ladd, Michael Guidash, Craig M. Smith, Thomas Vogelsang, Jay Endsley, Michael T. Ching, James E. Harris
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Publication number: 20190082125Abstract: A pixel array within an integrated-circuit image sensor is exposed to light representative of a scene during a first frame interval and then oversampled a first number of times within the first frame interval to generate a corresponding first number of frames of image data from which a first output image may be constructed. One or more of the first number of frames of image data are evaluated to determine whether a range of luminances in the scene warrants adjustment of an oversampling factor from the first number to a second number, if so, the oversampling factor is adjusted such that the pixel array is oversampled the second number of times within a second frame interval to generate a corresponding second number of frames of image data from which a second output image may be constructed.Type: ApplicationFiled: September 25, 2018Publication date: March 14, 2019Inventors: Craig M. Smith, Frank Armstrong, Jay Endsley, Thomas Vogelsang, James E. Harris, John Ladd, Michael Guidash
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Publication number: 20190045149Abstract: Photocharge is accumulated within an image sensor pixel array during a first exposure interval. At conclusion of the first exposure interval, accumulated photocharge is discarded from a first subset of the pixels to emulate absence of incident light with respect to those pixels. After discarding accumulated photocharge from the first subset of the pixels, first and second readout signals are generated, the first readout signals corresponding to respective pixels not included in the first subset and indicative of photocharge accumulated therein, and the second readout signals corresponding to respective pixels included in the first subset.Type: ApplicationFiled: July 31, 2018Publication date: February 7, 2019Inventors: Michael Guidash, Jay Endsley, John Ladd, Thomas Vogelsang, Craig M. Smith
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Patent number: 10165209Abstract: A sequence of control voltage levels are applied to a control signal line capacitively coupled to a floating diffusion node of a pixel to sequentially adjust a voltage level of the floating diffusion node. A pixel output signal representative of the voltage level of the floating diffusion node is compared with a reference voltage to identify a first control voltage level of the sequence of control voltage levels for which the voltage level of the floating diffusion node exceeds the reference voltage.Type: GrantFiled: July 23, 2015Date of Patent: December 25, 2018Assignee: Rambus Inc.Inventors: John Ladd, Michael Guidash, Craig M. Smith, Thomas Vogelsang, Jay Endsley, Michael T. Ching, James E. Harris
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Patent number: 10104318Abstract: A pixel array within an integrated-circuit image sensor is exposed to light representative of a scene during a first frame interval and then oversampled a first number of times within the first frame interval to generate a corresponding first number of frames of image data from which a first output image may be constructed. One or more of the first number of frames of image data are evaluated to determine whether a range of luminances in the scene warrants adjustment of an oversampling factor from the first number to a second number, if so, the oversampling factor is adjusted such that the pixel array is oversampled the second number of times within a second frame interval to generate a corresponding second number of frames of image data from which a second output image may be constructed.Type: GrantFiled: December 3, 2014Date of Patent: October 16, 2018Assignee: Rambus Inc.Inventors: Craig M. Smith, Frank Armstrong, Jay Endsley, Thomas Vogelsang, James E. Harris, John Ladd, Michael Guidash
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Patent number: 10070084Abstract: A pixel within a pixel array of an integrated-circuit image sensor outputs an analog signal representative of accumulated photocharge. First and second analog-to-digital conversions of the analog signal are initiated while the pixel is outputting the analog signal, the first analog-to-digital conversion corresponding to a low-light range of photocharge accumulation within the pixel and the second analog-to-digital conversion corresponding to a brighter-light range of photocharge accumulation within the pixel.Type: GrantFiled: January 6, 2016Date of Patent: September 4, 2018Assignee: Rambus Inc.Inventors: Michael Guidash, Jay Endsley, John Ladd, Thomas Vogelsang, Craig M. Smith
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Publication number: 20170214869Abstract: A sequence of control voltage levels are applied to a control signal line capacitively coupled to a floating diffusion node of a pixel to sequentially adjust a voltage level of the floating diffusion node. A pixel output signal representative of the voltage level of the floating diffusion node is compared with a reference voltage to identify a first control voltage level of the sequence of control voltage levels for which the voltage level of the floating diffusion node exceeds the reference voltage.Type: ApplicationFiled: July 23, 2015Publication date: July 27, 2017Inventors: John LADD, Michael GUIDASH, Craig M. SMITH, Thomas VOGELSANG, Jay ENDSLEY, Michael T. CHING, James E. HARRIS
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Publication number: 20170208272Abstract: A pixel circuit within an integrated-circuit image sensor includes a photodiode having a pinning layer of a first conductivity type, a floating diffusion node and a transfer gate disposed between the photodiode and the floating diffusion node. A first control input is coupled to the transfer gate, and a second control input is coupled to the pinning layer of the photodiode to enable the depletion potential of the photodiode to be raised and lowered.Type: ApplicationFiled: June 3, 2015Publication date: July 20, 2017Inventors: Michael GUIDASH, John LADD
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Patent number: 9655688Abstract: A dental instrument device includes a middle body with two ends, a pair of removable instrument tips, a pair of securing collets, and a pair of removable end caps. Each end of the middle body terminates in a middle body/instrument tip connection interface that receives a right-handed instrument tip only in a first orientation and a left-handed instrument tip only in a second orientation differing from the first orientation. The removable instrument tips have a similar middle body/instrument tip connection interface, and a working instrument end with a right-handed or a left-handed orientation. A right-handed instrument tip is releasably connected to the first middle body/instrument tip connection interface, and a left-handed instrument tip is releasably connected to the second middle body/instrument tip connection interface, with the right-handed and left-handed orientations being visually distinguishable one from the other by casual observation of an ordinary observer.Type: GrantFiled: November 4, 2013Date of Patent: May 23, 2017Inventors: John Ladd, Joe Kinney
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Patent number: 9584745Abstract: An image sensor configured to readout an arbitrary number of rows in parallel is described, comprising a rolling global shutter pixel array which can be operated as a true global shutter. Shielding structures may be formed in the pixel array to minimize signal coupling between adjacent pixels when multiple rows are simultaneously reset and read out. A plurality of column select lines may be formed in a given pixel pitch, and the image sensor may utilize read out components and circuitry associated with conventional readout circuits to be used in simultaneously reading out a two-dimensional region of the image sensor. The image sensor may be configured to use charge binning between rows that are reset and read out in parallel to improve power consumption. The image sensor may include redundant output stages with routing circuitry that improves image sensor yield by compensating for yield loss in the output stage.Type: GrantFiled: November 10, 2014Date of Patent: February 28, 2017Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventor: John Ladd
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Patent number: 9531976Abstract: An image sensor may have control circuitry and an array of pixels having corresponding photodiodes. The pixels may be arranged into groups. Photodiodes in each of the groups may share a common charge storage region. Each photodiode has an associated sensitivity provided by a corresponding color filter element. The control circuitry may perform multiple charge transfer operations to transfer charge accumulated in high sensitivity photodiodes in the group to the shared charge storage region, may readout image signals corresponding to the transferred charge, and may combine the image signals to generate final image signals for the photodiodes. The control circuitry may transfer charge accumulated in low sensitivity photodiodes in the group to the shared charge storage region after the image signals generated by the high sensitivity photodiodes have been read out, thereby increasing the maximum signal to noise ratio of the low sensitivity photodiodes without causing charge blooming.Type: GrantFiled: May 29, 2014Date of Patent: December 27, 2016Assignee: SEMICONDUCTOR COMPONENTS INDUSTRIES, LLCInventors: Vladimir Korobov, John Ladd
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Publication number: 20160323524Abstract: A pixel array within an integrated-circuit image sensor is exposed to light representative of a scene during a first frame interval and then oversampled a first number of times within the first frame interval to generate a corresponding first number of frames of image data from which a first output image may be constructed. One or more of the first number of frames of image data are evaluated to determine whether a range of luminances in the scene warrants adjustment of an oversampling factor from the first number to a second number, if so, the oversampling factor is adjusted such that the pixel array is oversampled the second number of times within a second frame interval to generate a corresponding second number of frames of image data from which a second output image may be constructed.Type: ApplicationFiled: December 3, 2014Publication date: November 3, 2016Inventors: Craig M. Smith, Frank Armstrong, Jay Endsley, Thomas Vogelsang, James E. Harris, John Ladd, Michael Guidash
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Patent number: 9432597Abstract: An integrated-circuit image sensor generates, as constituent reference voltages of a first voltage ramp, a first sequence of linearly related reference voltages followed by a second sequence of exponentially related reference voltages. The integrated-circuit image sensor compares the constituent reference voltages of the first voltage ramp with a first signal level representative of photocharge integrated within a pixel of the image sensor to identify a first reference voltage of the constituent reference voltages that is exceeded by the first signal level.Type: GrantFiled: July 23, 2015Date of Patent: August 30, 2016Assignee: Rambus Inc.Inventors: Michael Guidash, Thomas Vogelsang, Jay Endsley, James E. Harris, Craig M. Smith, John Ladd, Michael T. Ching