Patents by Inventor Andrew Zocher
Andrew Zocher 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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Publication number: 20230024188Abstract: Laser drivers and methods are disclosed including a pulse input for receiving one or more logical pulse control signals, a delay circuit, a main pulse output, and a precharge pulse output for efficiently driving a laser with reduced time delay to desired optical output and reduced power consumption during between optical outputs.Type: ApplicationFiled: July 21, 2021Publication date: January 26, 2023Inventors: Steve Troyer, Jonathan Ashbrook, Theron Jones, Richard Davis, Andrew Zocher
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Patent number: 10326531Abstract: An out-of-band (OOB) signal detector is disclosed. The OOB signal detector may include a first node configured to receive an alternating current (AC) portion and a direct current (DC) portion of an electrical signal. The AC portion may include modulated OOB data carried by the electrical signal. The OOB signal detector may also include a current to voltage processing circuit configured to extract the AC portion of the electrical signal. The OOB signal detector may additionally include a limiting amplifier circuit configured to receive the extracted AC portion and to generate an amplified signal based on the extracted AC portion. The OOB signal detector may further include an analog-to-digital convertor circuit configured to sample the amplified signal and to generate a digital sample that represents the modulated OOB data.Type: GrantFiled: September 18, 2018Date of Patent: June 18, 2019Assignee: FINISAR CORPORATIONInventors: Andrew Zocher, Theron Jones, Lucy Hosking
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Publication number: 20190020420Abstract: An out-of-band (OOB) signal detector is disclosed. The OOB signal detector may include a first node configured to receive an alternating current (AC) portion and a direct current (DC) portion of an electrical signal. The AC portion may include modulated OOB data carried by the electrical signal. The OOB signal detector may also include a current to voltage processing circuit configured to extract the AC portion of the electrical signal. The OOB signal detector may additionally include a limiting amplifier circuit configured to receive the extracted AC portion and to generate an amplified signal based on the extracted AC portion. The OOB signal detector may further include an analog-to-digital convertor circuit configured to sample the amplified signal and to generate a digital sample that represents the modulated OOB data.Type: ApplicationFiled: September 18, 2018Publication date: January 17, 2019Inventors: Andrew Zocher, Theron Jones, Lucy Hosking
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Patent number: 10079644Abstract: An out-of-band (OOB) signal detector is disclosed. The OOB signal detector may include a first node configured to receive an alternating current (AC) portion and a direct current (DC) portion of an electrical signal. The AC portion may include modulated OOB data carried by the electrical signal. The OOB signal detector may also include a current to voltage processing circuit configured to extract the AC portion of the electrical signal. The OOB signal detector may additionally include a limiting amplifier circuit configured to receive the extracted AC portion and to generate an amplified signal based on the extracted AC portion. The OOB signal detector may further include an analog-to-digital convertor circuit configured to sample the amplified signal and to generate a digital sample that represents the modulated OOB data.Type: GrantFiled: August 10, 2016Date of Patent: September 18, 2018Assignee: FINISAR CORPORATIONInventors: Andrew Zocher, Theron Jones, Lucy Hosking
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Patent number: 9912404Abstract: A method to measure and report electromagnetic radiation power includes receiving electromagnetic radiation and generating an electrical signal in response to the received electromagnetic radiation. The electrical signal may have a magnitude based on the power of the electromagnetic radiation. The method also includes applying a logarithmic gain to the electrical signal to generate a logarithmically amplified electrical signal. The method also includes sampling the logarithmically amplified electrical signal to generate a digital sample of the logarithmically amplified electrical signal.Type: GrantFiled: January 15, 2016Date of Patent: March 6, 2018Assignee: Finisar CorporationInventors: Lucy G. Hosking, Andrew Zocher, Theron Jones
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Publication number: 20170048000Abstract: An out-of-band (OOB) signal detector is disclosed. The OOB signal detector may include a first node configured to receive an alternating current (AC) portion and a direct current (DC) portion of an electrical signal. The AC portion may include modulated OOB data carried by the electrical signal. The OOB signal detector may also include a current to voltage processing circuit configured to extract the AC portion of the electrical signal. The OOB signal detector may additionally include a limiting amplifier circuit configured to receive the extracted AC portion and to generate an amplified signal based on the extracted AC portion. The OOB signal detector may further include an analog-to-digital convertor circuit configured to sample the amplified signal and to generate a digital sample that represents the modulated OOB data.Type: ApplicationFiled: August 10, 2016Publication date: February 16, 2017Inventors: Andrew Zocher, Theron Jones, Lucy Hosking
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Publication number: 20160211911Abstract: A method to measure and report electromagnetic radiation power includes receiving electromagnetic radiation and generating an electrical signal in response to the received electromagnetic radiation. The electrical signal may have a magnitude based on the power of the electromagnetic radiation. The method also includes applying a logarithmic gain to the electrical signal to generate a logarithmically amplified electrical signal. The method also includes sampling the logarithmically amplified electrical signal to generate a digital sample of the logarithmically amplified electrical signal.Type: ApplicationFiled: January 15, 2016Publication date: July 21, 2016Inventors: Lucy G. Hosking, Andrew Zocher, Theron Jones
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Patent number: 8411799Abstract: A receiver having an intermediate frequency error correction circuit includes a mixer having a source input, a local oscillator input, and an IF output, an adjustable frequency local oscillator having an output coupled to the local oscillator input of the mixer, an IF filter having an input coupled to the IF output of the mixer and an IF filtered output, where the IF filter has an IF filter frequency response, and control circuitry coupled to the local oscillator such that the frequency of the local oscillator can be varied to at least: partially correct an IF frequency error.Type: GrantFiled: November 13, 2009Date of Patent: April 2, 2013Assignee: Maxim Integrated Products, Inc.Inventors: Theron L. Jones, Andrew Zocher, Luiz Antonio Razera, Jr., Lawrence Rankin Burgess
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Patent number: 8238477Abstract: In an embodiment, set forth by way of example and not limitation, a data slicer includes a signal input node, a comparator having a first input of a first polarity, a second input of a second polarity which is the opposite of the first polarity, and an output coupled to a data out node, the first input of the comparator being coupled to the signal input node, and a multi-mode threshold generator including a first threshold generator and second threshold generator, whereby the first threshold generator is selected firstly and the second threshold generator is selected secondly.Type: GrantFiled: March 2, 2009Date of Patent: August 7, 2012Assignee: Maxim Integrated Products, Inc.Inventors: Andrew Zocher, Luiz Antonio Razera, Jr.
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Patent number: 8223900Abstract: In an embodiment, set forth by way of example and not limitation, a receiver with automatic gain includes a receiver stage, an AGC stage, and a digital processor which collectively define an AGC loop. Preferably, the AGC stage has a control circuit and a feedback circuit with matched transfer characteristics. A digital processor is operative to develop a gain control signal to set a desired gain level of the receiver stage to an optimal level based upon a waveform analysis derived from the gain feedback signal.Type: GrantFiled: March 2, 2009Date of Patent: July 17, 2012Assignee: Maxim Integrated Products, Inc.Inventors: Andrew Zocher, Luiz Antonio Razera, Jr., Arman Hematy
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Patent number: 7843257Abstract: An example bandpass filter calibration system includes a MUX, first and second signal sources coupled to inputs of the MUX, a bandpass filter coupled to an output of the MUX, a rectification circuit including a plurality of rectifiers having a corresponding plurality of rectifier outputs coupled to an output of the bandpass filter, a summer having a plurality of inputs coupled to the plurality of rectifier outputs, a low pass filter coupled to an output of the summer, an ADC coupled to an output of the low pass filter, and a calibration processor unit coupled to an output of the ADC. The calibration processor unit controls the MUX to selectively apply the first signal source and the second signal source to the bandpass filter and calibrates the bandpass filter by a least one of increasing filter center frequency and decreasing filter center frequency of the bandpass filter.Type: GrantFiled: March 2, 2009Date of Patent: November 30, 2010Assignee: Maxim Integrated Products, Inc.Inventors: Theron Jones, Luiz Antonio Razera, Jr., Andrew Zocher
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Publication number: 20100220817Abstract: In an embodiment, set forth by way of example and not limitation, a data slicer includes a signal input node, a comparator having a first input of a first polarity, a second input of a second polarity which is the opposite of the first polarity, and an output coupled to a data out node, the first input of the comparator being coupled to the signal input node, and a multi-mode threshold generator including a first threshold generator and second threshold generator, whereby the first threshold generator is selected firstly and the second threshold generator is selected secondly.Type: ApplicationFiled: March 2, 2009Publication date: September 2, 2010Inventors: Andrew Zocher, Luiz Antonio Razera, JR.
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Publication number: 20100219883Abstract: An example bandpass filter calibration system includes a MUX, first and second signal sources coupled to inputs of the MUX, a bandpass filter coupled to an output of the MUX, a rectification circuit including a plurality of rectifiers having a corresponding plurality of rectifier outputs coupled to an output of the bandpass filter, a summer having a plurality of inputs coupled to the plurality of rectifier outputs, a low pass filter coupled to an output of the summer, an ADC coupled to an output of the low pass filter, and a calibration processor unit coupled to an output of the ADC. The calibration processor unit controls the MUX to selectively apply the first signal source and the second signal source to the bandpass filter and calibrates the bandpass filter by a least one of increasing filter center frequency and decreasing filter center frequency of the bandpass filter.Type: ApplicationFiled: March 2, 2009Publication date: September 2, 2010Inventors: Theron Jones, Luiz Antonio Razera, JR., Andrew Zocher
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Publication number: 20100220820Abstract: In an embodiment, set forth by way of example and not limitation, a receiver with automatic gain includes a receiver stage, an AGC stage, and a digital processor which collectively define an AGC loop. Preferably, the AGC stage has a control circuit and a feedback circuit with matched transfer characteristics. A digital processor is operative to develop a gain control signal to set a desired gain level of the receiver stage to an optimal level based upon a waveform analysis derived from the gain feedback signal.Type: ApplicationFiled: March 2, 2009Publication date: September 2, 2010Inventors: Andrew Zocher, Luiz Antonio Razera, JR., Arman Hematy