Patents by Inventor Gerald L. Cadloni
Gerald L. Cadloni 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: 10446241Abstract: Several embodiments of memory devices and systems with walking read level calibration are disclosed herein. In one embodiment, a system includes a memory component having at least one memory region and calibration circuitry. The memory region has memory cells that read out data states in response to application of a current read level signal. The calibration circuitry is operably coupled to the at least one memory region and is configured to perform iterative calibrations of the memory region by determining a first read level offset value during a first calibration. A new base read level test signal is determined based on the first read level offset value. During a second calibration using the new base read level test signal, a second read level offset value is determined.Type: GrantFiled: August 13, 2018Date of Patent: October 15, 2019Assignee: Micron Technology, Inc.Inventors: Bruce A. Liikanen, Gerald L. Cadloni
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Patent number: 10355815Abstract: A system uses multi-level encoding where each symbol of a plurality of symbols represents more than one bit of information in a user data symbol stream for transfer using a multilevel transmission channel. The user data symbols are represented in a digital bitwise form such that each symbol is presented as a plurality of bits and each bit is subject to a different probability of error. An error correction procedure is applied based on the different error probability that is associated with each bit in the plurality. The channel can be configured to support a mosaic tile structure, each tile containing a channel symbol such that a selected tile has a collective error probability that is different from other tiles. Customized coding can be applied to the tile structure to allocate a selected amount of error correction power to the selected tile based on an overall available correction power.Type: GrantFiled: May 20, 2016Date of Patent: July 16, 2019Assignee: Micron Technology, Inc.Inventors: Bruce A. Liikanen, Stephen P. Van Aken, Gerald L. Cadloni, John L. Seabury, Robert B. Eisenhuth
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Patent number: 10242751Abstract: An embodiment providing one or more improvements includes a memory loading system and method for at least managing testing of a memory unit using a memory test system and responsive to at least completion of testing and passing the testing, loading non-testing content into the memory unit for delivery to a customer.Type: GrantFiled: June 3, 2015Date of Patent: March 26, 2019Assignee: Micron Technology, Inc.Inventor: Gerald L. Cadloni
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Patent number: 9985651Abstract: Apparatuses and methods for soft read threshold location calibration are provided. One example method can include selecting read threshold sets (RTSs), and determining log-likelihood-ratios (LLRs) based on a number of decisions that correspond to each bin associated with the selected RTSs. Low-density parity-check (LDPC) codewords are decoded using the determined LLRs, and a RTS of the RTSs yielding a least number of failed codewords decoded using the determined LLRs is identified.Type: GrantFiled: May 25, 2017Date of Patent: May 29, 2018Assignee: Micron Technology, Inc.Inventors: Chandra C. Varanasi, Gerald L. Cadloni
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Publication number: 20170264312Abstract: Apparatuses and methods for soft read threshold location calibration are provided. One example method can include selecting read threshold sets (RTSs), and determining log-likelihood-ratios (LLRs) based on a number of decisions that correspond to each bin associated with the selected RTSs. Low-density parity-check (LDPC) codewords are decoded using the determined LLRs, and a RTS of the RTSs yielding a least number of failed codewords decoded using the determined LLRs is identified.Type: ApplicationFiled: May 25, 2017Publication date: September 14, 2017Inventors: Chandra C. Varanasi, Gerald L. Cadloni
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Patent number: 9692449Abstract: Apparatuses and methods for soft read threshold location calibration are provided. One example method can include selecting read threshold sets (RTSs), and determining log-likelihood-ratios (LLRs) based on a number of decisions that correspond to each bin associated with the selected RTSs. Low-density parity-check (LDPC) codewords are decoded using the determined LLRs, and a RTS of the RTSs yielding a least number of failed codewords decoded using the determined LLRs is identified.Type: GrantFiled: March 14, 2016Date of Patent: June 27, 2017Assignee: Micron Technology, Inc.Inventors: Chandra C. Varanasi, Gerald L. Cadloni
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Publication number: 20160269147Abstract: A system uses multi-level encoding where each symbol of a plurality of symbols represents more than one bit of information in a user data symbol stream for transfer using a multilevel transmission channel. The user data symbols are represented in a digital bitwise form such that each symbol is presented as a plurality of bits and each bit is subject to a different probability of error. An error correction procedure is applied based on the different error probability that is associated with each bit in the plurality. The channel can be configured to support a mosaic tile structure, each tile containing a channel symbol such that a selected tile has a collective error probability that is different from other tiles. Customized coding can be applied to the tile structure to allocate a selected amount of error correction power to the selected tile based on an overall available correction power.Type: ApplicationFiled: May 20, 2016Publication date: September 15, 2016Inventors: Bruce A. Liikanen, Stephen P. Van Aken, Gerald L. Cadloni, John L. Seabury, Robert B. Eisenhuth
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Publication number: 20160197623Abstract: Apparatuses and methods for soft read threshold location calibration are provided. One example method can include selecting read threshold sets (RTSs), and determining log-likelihood-ratios (LLRs) based on a number of decisions that correspond to each bin associated with the selected RTSs. Low-density parity-check (LDPC) codewords are decoded using the determined LLRs, and a RTS of the RTSs yielding a least number of failed codewords decoded using the determined LLRs is identified.Type: ApplicationFiled: March 14, 2016Publication date: July 7, 2016Inventors: Chandra C. Varanasi, Gerald L. Cadloni
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Patent number: 9374343Abstract: A system uses multi-level encoding where each symbol of a plurality of symbols represents more than one bit of information in a user data symbol stream for transfer using a multilevel transmission channel. The user data symbols are represented in a digital bitwise form such that each symbol is presented as a plurality of bits and each bit is subject to a different probability of error. An error correction procedure is applied based on the different error probability that is associated with each bit in the plurality. The channel can be configured to support a mosaic tile structure, each tile containing a channel symbol such that a selected tile has a collective error probability that is different from other tiles. Customized coding can be applied to the tile structure to allocate a selected amount of error correction power to the selected tile based on an overall available correction power.Type: GrantFiled: December 4, 2013Date of Patent: June 21, 2016Assignee: Micron Technology, Inc.Inventors: Bruce A. Liikanen, Stephen P. Van Aken, Gerald L. Cadloni, John L. Seabury, Robert B. Eisenhuth
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Patent number: 9306600Abstract: Apparatuses and methods for soft read threshold location calibration are provided. One example method can include selecting read threshold sets (RTSs), and determining log-likelihood-ratios (LLRs) based on a number of decisions that correspond to each bin associated with the selected RTSs. Low-density parity-check (LDPC) codewords are decoded using the determined LLRs, and a RTS of the RTSs yielding a least number of failed codewords decoded using the determined LLRs is identified.Type: GrantFiled: January 6, 2014Date of Patent: April 5, 2016Assignee: Micron Technology, Inc.Inventors: Chandra C. Varanasi, Gerald L. Cadloni
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Publication number: 20150294737Abstract: An embodiment providing one or more improvements includes a memory loading system and method for at least managing testing of a memory unit using a memory test system and responsive to at least completion of testing and passing the testing, loading non-testing content into the memory unit for delivery to a customer.Type: ApplicationFiled: June 3, 2015Publication date: October 15, 2015Inventor: Gerald L. Cadloni
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Patent number: 9081717Abstract: In one embodiment, an encoder reads a set of data from memory cells to obtain retrieved data influenced by one or more distortion mechanisms as a result of having been stored. A quality metric is generated responsive to the retrieved data that changes in value responsive to differences between the user data and the associated retrieved data. A quality monitor establishes a relationship between a current value of the quality metric and a threshold value and monitors the relationship as being indicative of a degradation of the quality of the retrieved data, and selectively initiates an error response. In another embodiment, a correction value is iterated through a set of values as a quality metric is monitored such that the value of the quality metric which most closely approaches the value of the quality metric immediately subsequent to an initial writing of the data can be selected.Type: GrantFiled: September 8, 2014Date of Patent: July 14, 2015Assignee: Micron Technology, Inc.Inventors: Bruce A. Liikanen, Gerald L. Cadloni, Larry J. Koudele, John L. Seabury, Stephen P. VanAken, Guy R. Wagner
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Patent number: 9082474Abstract: An embodiment providing one or more improvements includes a memory loading system and method for at least managing testing of a memory unit using a memory test system and responsive to at least completion of testing and passing the testing, loading non-testing content into the memory unit for delivery to a customer.Type: GrantFiled: April 21, 2011Date of Patent: July 14, 2015Assignee: Micron Technology, Inc.Inventor: Gerald L. Cadloni
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Publication number: 20150194983Abstract: Apparatuses and methods for soft read threshold location calibration are provided. One example method can include selecting read threshold sets (RTSs), and determining log-likelihood-ratios (LLRs) based on a number of decisions that correspond to each bin associated with the selected RTSs. Low-density parity-check (LDPC) codewords are decoded using the determined LLRs, and a RTS of the RTSs yielding a least number of failed codewords decoded using the determined LLRs is identified.Type: ApplicationFiled: January 6, 2014Publication date: July 9, 2015Applicant: Micron Technology, Inc.Inventors: Chandra C. Varanasi, Gerald L. Cadloni
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Publication number: 20140380123Abstract: In one embodiment, an encoder reads a set of data from memory cells to obtain retrieved data influenced by one or more distortion mechanisms as a result of having been stored. A quality metric is generated responsive to the retrieved data that changes in value responsive to differences between the user data and the associated retrieved data. A quality monitor establishes a relationship between a current value of the quality metric and a threshold value and monitors the relationship as being indicative of a degradation of the quality of the retrieved data, and selectively initiates an error response. In another embodiment, a correction value is iterated through a set of values as a quality metric is monitored such that the value of the quality metric which most closely approaches the value of the quality metric immediately subsequent to an initial writing of the data can be selected.Type: ApplicationFiled: September 8, 2014Publication date: December 25, 2014Inventors: Bruce A. Liikanen, Gerald L. Cadloni, Larry J. Koudele, John L. Seabury, Stephen P. VanAken, Guy R. Wagner
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Patent number: 8862969Abstract: In one embodiment, an encoder reads a set of data from memory cells to obtain retrieved data influenced by one or more distortion mechanisms as a result of having been stored. A quality metric is generated responsive to the retrieved data that changes in value responsive to differences between the user data and the associated retrieved data. A quality monitor establishes a relationship between a current value of the quality metric and a threshold value and monitors the relationship as being indicative of a degradation of the quality of the retrieved data, and selectively initiates an error response. In another embodiment, a correction value is iterated through a set of values as a quality metric is monitored such that the value of the quality metric which most closely approaches the value of the quality metric immediately subsequent to an initial writing of the data can be selected.Type: GrantFiled: June 28, 2013Date of Patent: October 14, 2014Assignee: Micron Technology, Inc.Inventors: Bruce A. Liikanen, Gerald L. Cadloni, Larry J. Koudele, John L. Seabury, Stephen P. Van Aken, Guy R. Wagner
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Publication number: 20140093076Abstract: A system uses multi-level encoding where each symbol of a plurality of symbols represents more than one bit of information in a user data symbol stream for transfer using a multilevel transmission channel. The user data symbols are represented in a digital bitwise form such that each symbol is presented as a plurality of bits and each bit is subject to a different probability of error. An error correction procedure is applied based on the different error probability that is associated with each bit in the plurality. The channel can be configured to support a mosaic tile structure, each tile containing a channel symbol such that a selected tile has a collective error probability that is different from other tiles. Customized coding can be applied to the tile structure to allocate a selected amount of error correction power to the selected tile based on an overall available correction power.Type: ApplicationFiled: December 4, 2013Publication date: April 3, 2014Applicant: Micron Technology, Inc.Inventors: Bruce A. Liikanen, Stephen P. Van Aken, Gerald L. Cadloni, John L. Seabury, Robert B. Eisenhuth
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Patent number: 8627165Abstract: A system uses multi-level encoding where each symbol of a plurality of symbols represents more than one bit of information in a user data symbol stream for transfer using a multilevel transmission channel. The user data symbols are represented in a digital bitwise form such that each symbol is presented as a plurality of bits and each bit is subject to a different probability of error. An error correction procedure is applied based on the different error probability that is associated with each bit in the plurality. The channel can be configured to support a mosaic tile structure, each tile containing a channel symbol such that a selected tile has a collective error probability that is different from other tiles. Customized coding can be applied to the tile structure to allocate a selected amount of error correction power to the selected tile based on an overall available correction power.Type: GrantFiled: March 13, 2009Date of Patent: January 7, 2014Assignee: Micron Technology, Inc.Inventors: Bruce A. Liikanen, Stephen P. Van Aken, Gerald L. Cadloni, John L. Seabury, Robert B Eisenhuth
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Publication number: 20130290811Abstract: In one embodiment, an encoder reads a set of data from memory cells to obtain retrieved data influenced by one or more distortion mechanisms as a result of having been stored. A quality metric is generated responsive to the retrieved data that changes in value responsive to differences between the user data and the associated retrieved data. A quality monitor establishes a relationship between a current value of the quality metric and a threshold value and monitors the relationship as being indicative of a degradation of the quality of the retrieved data, and selectively initiates an error response. In another embodiment, a correction value is iterated through a set of values as a quality metric is monitored such that the value of the quality metric which most closely approaches the value of the quality metric immediately subsequent to an initial writing of the data can be selected.Type: ApplicationFiled: June 28, 2013Publication date: October 31, 2013Inventors: Bruce A. Liikanen, Gerald L. Cadloni, Larry J. Koudele, John L. Seabury, Stephen P. Van Aken, Guy R. Wagner
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Patent number: 8499227Abstract: In one embodiment, an encoder reads a set of data from memory cells to obtain retrieved data influenced by one or more distortion mechanisms as a result of having been stored. A quality metric is generated responsive to the retrieved data that changes in value responsive to differences between the user data and the associated retrieved data. A quality monitor establishes a relationship between a current value of the quality metric and a threshold value and monitors the relationship as being indicative of a degradation of the quality of the retrieved data, and selectively initiates an error response. In another embodiment, a correction value is iterated through a set of values as a quality metric is monitored such that the value of the quality metric which most closely approaches the value of the quality metric immediately subsequent to an initial writing of the data can be selected.Type: GrantFiled: September 23, 2010Date of Patent: July 30, 2013Assignee: Micron Technology, Inc.Inventors: Bruce A. Liikanen, Gerald L. Cadloni, Larry J. Koudele, John L. Seabury, Stephen P. Van Aken, Guy R. Wagner