Patents by Inventor Joshua P. de Cesare
Joshua P. de Cesare 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: 11263326Abstract: A method and apparatus for performing a secure boot of a computer system is disclosed. A computer system according to the disclosure includes an auxiliary processor and a main processor. The boot process includes initially booting the auxiliary processor. The auxiliary processor includes a non-volatile memory storing boot code for the main processor. The auxiliary processor may perform a verification of the boot code. Subsequent to verifying the boot code, the main processor may be released from a reset state. Once the main processor is no longer in the reset state, the boot code may be provided thereto. Thereafter, the boot procedure may continue with the main processor executing the boot code.Type: GrantFiled: September 29, 2017Date of Patent: March 1, 2022Assignee: Apple Inc.Inventors: Joshua P. de Cesare, Timothy R. Paaske, Xeno S. Kovah, Nikolaj Schlej, Jeffrey R. Wilcox, Ezekiel T. Runyon, Hardik K. Doshi, Kevin H. Alderfer, Corey T. Kallenberg
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Patent number: 11216054Abstract: This application relates to techniques that adjust the sleep states of a computing device based on user proximity detection procedures. The technique includes detecting a first pattern, using a first subset of sensors of one or more sensors coupled to the computing device, to determine if the object is proximate to the computing device. Provided the first pattern is not indicative of the object being proximate to the computing device, the technique detects a second pattern, using a second subset of sensors of the one or more sensors, to determine if the object is proximate to the computing device. Furthermore, provided either the first pattern or the second pattern is indicative of the object being proximate to the computing device and provided a first portion of a computer system within the computing device is operating within a low-power sleep state, the technique causes the first portion to enter into a high-power sleep state.Type: GrantFiled: September 20, 2019Date of Patent: January 4, 2022Assignee: Apple Inc.Inventors: Joshua P. de Cesare, Jonathan J. Andrews, Jeffrey R. Wilcox
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Patent number: 11211036Abstract: Systems, apparatuses, and methods for implementing a timestamp based display update mechanism. A display control unit includes a timestamp queue for storing timestamps, wherein each timestamp indicates when a corresponding frame configuration set should be fetched from memory. At pre-defined intervals, the display control unit may compare the timestamp of the topmost entry of the timestamp queue to a global timer value. If the timestamp is earlier than the global timer value, the display control unit may pop the timestamp entry and fetch the frame next configuration set from memory. The display control unit may then apply the updates of the frame configuration set to its pixel processing elements. After applying the updates, the display control unit may fetch and process the source pixel data and then drive the pixels of the next frame to the display.Type: GrantFiled: July 2, 2020Date of Patent: December 28, 2021Assignee: Apple Inc.Inventors: Brijesh Tripathi, Arthur L. Spence, Joshua P. de Cesare, Ilie Garbacea, Guy Cote, Mahesh B. Chappalli, Malcolm D. Gray, Christopher P. Tann
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Publication number: 20210341317Abstract: In an embodiment, a system on a chip (SOC) includes a component that remains powered when the remainder of the SOC is powered off. The component may include a sensor capture unit to capture data from various device sensors, and may filter the captured sensor data. Responsive to the filtering, the component may wake up the remainder of the SOC to permit the processing. The component may store programmable configuration data, matching the state at the time the SOC was most recently powered down, for the other components of the SOC, in order to reprogram them after wakeup. In some embodiments, the component may be configured to wake up the memory controller within the SOC and the path to the memory controller, in order to write the data to memory. The remainder of the SOC may remain powered down.Type: ApplicationFiled: July 12, 2021Publication date: November 4, 2021Inventors: Brijesh Tripathi, Shane J. Keil, Manu Gulati, Jung Wook Cho, Erik P. Machnicki, Gilbert H. Herbeck, Timothy J. Millet, Joshua P. de Cesare, Anand Dalal
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Publication number: 20210333132Abstract: In an embodiment, a system on a chip (SOC) includes a component that remains powered when the remainder of the SOC is powered off. The component may include a sensor capture unit to capture data from various device sensors, and may filter the captured sensor data. Responsive to the filtering, the component may wake up the remainder of the SOC to permit the processing. The component may store programmable configuration data, matching the state at the time the SOC was most recently powered down, for the other components of the SOC, in order to reprogram them after wakeup. In some embodiments, the component may be configured to wake up the memory controller within the SOC and the path to the memory controller, in order to write the data to memory. The remainder of the SOC may remain powered down.Type: ApplicationFiled: July 2, 2021Publication date: October 28, 2021Inventors: Brijesh Tripathi, Shane J. Keil, Manu Gulati, Jung Wook Cho, Erik P. Machnicki, Gilbert H. Herbeck, Timothy J. Millet, Joshua P. de Cesare, Anand Dalal, Michael F. Culbert
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Patent number: 11079261Abstract: In an embodiment, a system on a chip (SOC) includes a component that remains powered when the remainder of the SOC is powered off. The component may include a sensor capture unit to capture data from various device sensors, and may filter the captured sensor data. Responsive to the filtering, the component may wake up the remainder of the SOC to permit the processing. The component may store programmable configuration data, matching the state at the time the SOC was most recently powered down, for the other components of the SOC, in order to reprogram them after wakeup. In some embodiments, the component may be configured to wake up the memory controller within the SOC and the path to the memory controller, in order to write the data to memory. The remainder of the SOC may remain powered down.Type: GrantFiled: November 20, 2019Date of Patent: August 3, 2021Assignee: Apple Inc.Inventors: Brijesh Tripathi, Shane J. Keil, Manu Gulati, Jung Wook Cho, Erik P. Machnicki, Gilbert H. Herbeck, Timothy J. Millet, Joshua P. de Cesare, Anand Dalal
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Patent number: 10943557Abstract: Systems, methods, and apparatus to transition a display device between operating modes using a single dedicated pin of a circuit connected to the display device. The dedicated pin can receive a packet signal corresponding to an operating mode for the display device, and the circuit can thereafter cause the display device to transition into the desired operating mode in response to receiving the packet signal. The operating mode can be a low power on mode where an interface connected to the circuit is deactivated and at least some circuitry of the display device is throttled or powered off. The display device can be driven in an all black state while in the low power on mode, thereby allowing the display device to more quickly transition out of the low power on mode compared to when the display device is completely off.Type: GrantFiled: April 15, 2019Date of Patent: March 9, 2021Assignee: Apple Inc.Inventors: Yafei Bi, Lei He, Mohammad B. Vahid Far, Mir B. Ghaderi, Venu Madhav Duggineni, Vanessa C. Heppolette, Joshua P. De Cesare, Hyuck-Jae Lee
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Patent number: 10915160Abstract: In an embodiment, a system on a chip (SOC) includes a component that remains powered when the remainder of the SOC is powered off. The component may include a sensor capture unit to capture data from various device sensors, and may filter the captured sensor data. Responsive to the filtering, the component may wake up the remainder of the SOC to permit the processing. The component may store programmable configuration data, matching the state at the time the SOC was most recently powered down, for the other components of the SOC, in order to reprogram them after wakeup. In some embodiments, the component may be configured to wake up the memory controller within the SOC and the path to the memory controller, in order to write the data to memory. The remainder of the SOC may remain powered down.Type: GrantFiled: January 17, 2020Date of Patent: February 9, 2021Assignee: Apple Inc.Inventors: Anand Dalal, Joshua P. de Cesare
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Patent number: 10878113Abstract: Techniques are disclosed relating to data storage. In various embodiments, a computing device includes first and second processors and memory having stored therein a first encrypted operating system executable by the first processor and a second encrypted operating system executable by the second processor. The computing device also includes a secure circuit configured to receive, via a first mailbox mechanism of the secure circuit, a first request from the first processor for a first cryptographic key usable to decrypt the first operating system. The secure circuit is further configured to receive, via a second mailbox mechanism of the secure circuit, a second request from the second processor for a second cryptographic key usable to decrypt the second operating system, and to provide the first and second cryptographic keys.Type: GrantFiled: September 27, 2018Date of Patent: December 29, 2020Assignee: Apple Inc.Inventors: Wade Benson, Michael J. Smith, Joshua P. de Cesare
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Publication number: 20200402482Abstract: Systems, apparatuses, and methods for implementing a timestamp based display update mechanism. A display control unit includes a timestamp queue for storing timestamps, wherein each timestamp indicates when a corresponding frame configuration set should be fetched from memory. At pre-defined intervals, the display control unit may compare the timestamp of the topmost entry of the timestamp queue to a global timer value. If the timestamp is earlier than the global timer value, the display control unit may pop the timestamp entry and fetch the frame next configuration set from memory. The display control unit may then apply the updates of the frame configuration set to its pixel processing elements. After applying the updates, the display control unit may fetch and process the source pixel data and then drive the pixels of the next frame to the display.Type: ApplicationFiled: July 2, 2020Publication date: December 24, 2020Inventors: Brijesh Tripathi, Arthur L. Spence, Joshua P. de Cesare, Ilie Garbacea, Guy Cote, Mahesh B. Chappalli, Malcolm D. Gray, Christopher P. Tann
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Patent number: 10706825Abstract: Systems, apparatuses, and methods for implementing a timestamp based display update mechanism. A display control unit includes a timestamp queue for storing timestamps, wherein each timestamp indicates when a corresponding frame configuration set should be fetched from memory. At pre-defined intervals, the display control unit may compare the timestamp of the topmost entry of the timestamp queue to a global timer value. If the timestamp is earlier than the global timer value, the display control unit may pop the timestamp entry and fetch the frame next configuration set from memory. The display control unit may then apply the updates of the frame configuration set to its pixel processing elements. After applying the updates, the display control unit may fetch and process the source pixel data and then drive the pixels of the next frame to the display.Type: GrantFiled: September 29, 2015Date of Patent: July 7, 2020Assignee: Apple Inc.Inventors: Brijesh Tripathi, Arthur L. Spence, Joshua P. de Cesare, Ilie Garbacea, Guy Cote, Mahesh B. Chappalli, Malcolm D. Gray, Christopher P. Tann
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Publication number: 20200150745Abstract: In an embodiment, a system on a chip (SOC) includes a component that remains powered when the remainder of the SOC is powered off. The component may include a sensor capture unit to capture data from various device sensors, and may filter the captured sensor data. Responsive to the filtering, the component may wake up the remainder of the SOC to permit the processing. The component may store programmable configuration data, matching the state at the time the SOC was most recently powered down, for the other components of the SOC, in order to reprogram them after wakeup. In some embodiments, the component may be configured to wake up the memory controller within the SOC and the path to the memory controller, in order to write the data to memory. The remainder of the SOC may remain powered down.Type: ApplicationFiled: January 17, 2020Publication date: May 14, 2020Inventors: Anand Dalal, Joshua P. de Cesare
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Publication number: 20200149932Abstract: In an embodiment, a system on a chip (SOC) includes a component that remains powered when the remainder of the SOC is powered off. The component may include a sensor capture unit to capture data from various device sensors, and may filter the captured sensor data. Responsive to the filtering, the component may wake up the remainder of the SOC to permit the processing. The component may store programmable configuration data, matching the state at the time the SOC was most recently powered down, for the other components of the SOC, in order to reprogram them after wakeup. In some embodiments, the component may be configured to wake up the memory controller within the SOC and the path to the memory controller, in order to write the data to memory. The remainder of the SOC may remain powered down.Type: ApplicationFiled: November 20, 2019Publication date: May 14, 2020Inventors: Brijesh Tripathi, Shane J. Keil, Manu Gulati, Jung Wook Cho, Erik P. Machnicki, Gilbert H. Herbeck, Timothy J. Millet, Joshua P. de Cesare, Anand Dalal
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Patent number: 10571996Abstract: In an embodiment, a system on a chip (SOC) includes a component that remains powered when the remainder of the SOC is powered off. The component may include a sensor capture unit to capture data from various device sensors, and may filter the captured sensor data. Responsive to the filtering, the component may wake up the remainder of the SOC to permit the processing. The component may store programmable configuration data, matching the state at the time the SOC was most recently powered down, for the other components of the SOC, in order to reprogram them after wakeup. In some embodiments, the component may be configured to wake up the memory controller within the SOC and the path to the memory controller, in order to write the data to memory. The remainder of the SOC may remain powered down.Type: GrantFiled: August 31, 2017Date of Patent: February 25, 2020Assignee: Apple Inc.Inventors: Anand Dalal, Joshua P. de Cesare
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Publication number: 20200012331Abstract: This application relates to techniques that adjust the sleep states of a computing device based on user proximity detection procedures. The technique includes detecting a first pattern, using a first subset of sensors of one or more sensors coupled to the computing device, to determine if the object is proximate to the computing device. Provided the first pattern is not indicative of the object being proximate to the computing device, the technique detects a second pattern, using a second subset of sensors of the one or more sensors, to determine if the object is proximate to the computing device. Furthermore, provided either the first pattern or the second pattern is indicative of the object being proximate to the computing device and provided a first portion of a computer system within the computing device is operating within a low-power sleep state, the technique causes the first portion to enter into a high-power sleep state.Type: ApplicationFiled: September 20, 2019Publication date: January 9, 2020Inventors: Joshua P. de CESARE, Jonathan J. ANDREWS, Jeffrey R. WILCOX
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Patent number: 10496572Abstract: In an embodiment, processors may have associated special purpose registers (SPRs) such as model specific registers (MSRs), used to communicate IPIs between the processors. In an embodiment, several types of IPIs may be defined, such as one or more of an immediate type, a deferred type, a retract type, and/or a non-waking type. The immediate IPI may be delivered and may cause the target processor to interrupt in response to receipt of the IPI. The deferred IPI may be delivered within a defined time limit, and not necessarily on receipt by the target processor. The retract IPI may cause a previously transmitted IPI to be cancelled (if it has not already caused the target processor to interrupt). A non-waking IPI may not cause the target processor to wake if it is asleep, but may be delivered when the target processor is awakened for another reason.Type: GrantFiled: March 6, 2017Date of Patent: December 3, 2019Assignee: Apple Inc.Inventors: John H. Kelm, Bernard J. Semeria, Joshua P. de Cesare, Shih-Chieh Wen
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Patent number: 10488230Abstract: In an embodiment, a system on a chip (SOC) includes a component that remains powered when the remainder of the SOC is powered off. The component may include a sensor capture unit to capture data from various device sensors, and may filter the captured sensor data. Responsive to the filtering, the component may wake up the remainder of the SOC to permit the processing. The component may store programmable configuration data, matching the state at the time the SOC was most recently powered down, for the other components of the SOC, in order to reprogram them after wakeup. In some embodiments, the component may be configured to wake up the memory controller within the SOC and the path to the memory controller, in order to write the data to memory. The remainder of the SOC may remain powered down.Type: GrantFiled: June 26, 2018Date of Patent: November 26, 2019Assignee: Apple Inc.Inventors: Brijesh Tripathi, Shane J. Keil, Manu Gulati, Jung Wook Cho, Erik P. Machnicki, Gilbert H. Herbeck, Timothy J. Millet, Joshua P. de Cesare, Anand Dalal
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Publication number: 20190340998Abstract: Systems, methods, and apparatus to transition a display device between operating modes using a single dedicated pin of a circuit connected to the display device. The dedicated pin can receive a packet signal corresponding to an operating mode for the display device, and the circuit can thereafter cause the display device to transition into the desired operating mode in response to receiving the packet signal. The operating mode can be a low power on mode where an interface connected to the circuit is deactivated and at least some circuitry of the display device is throttled or powered off. The display device can be driven in an all black state while in the low power on mode, thereby allowing the display device to more quickly transition out of the low power on mode compared to when the display device is completely off.Type: ApplicationFiled: April 15, 2019Publication date: November 7, 2019Inventors: Yafei Bi, Lei He, Mohammad B. Vahid Far, Mir B. Ghaderi, Venu Madhav Duggineni, Vanessa C. Heppolette, Joshua P. De Cesare, Hyuck-Jae Lee
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Patent number: 10423212Abstract: This application relates to techniques that adjust the sleep states of a computing device based on user proximity detection procedures. The technique includes detecting a first pattern, using a first subset of sensors of one or more sensors coupled to the computing device, to determine if the object is proximate to the computing device. Provided the first pattern is not indicative of the object being proximate to the computing device, the technique detects a second pattern, using a second subset of sensors of the one or more sensors, to determine if the object is proximate to the computing device. Furthermore, provided either the first pattern or the second pattern is indicative of the object being proximate to the computing device and provided a first portion of a computer system within the computing device is operating within a low-power sleep state, the technique causes the first portion to enter into a high-power sleep state.Type: GrantFiled: November 17, 2017Date of Patent: September 24, 2019Assignee: Apple Inc.Inventors: Joshua P. de Cesare, Jonathan J. Andrews, Jeffrey R. Wilcox
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Patent number: 10417429Abstract: A method and apparatus for protecting boot variables is disclosed. A computer system includes a main processor and an auxiliary processor. The auxiliary processor includes a non-volatile memory that stores variables associated with boot code that is also stored thereon. The main processor may send a request to the auxiliary processor to alter one of the variables stored in the non-volatile memory. Responsive to receiving the request, the auxiliary processor may execute a security policy to determine if the main processor meets the criteria for altering the variable. If the auxiliary processor determines that the main processor meets the criteria, it may grant permission to alter the variable.Type: GrantFiled: September 29, 2017Date of Patent: September 17, 2019Assignee: Apple Inc.Inventors: Joshua P. de Cesare, Timothy R. Paaske, Xeno S. Kovah, Nikolaj Schlej, Jeffrey R. Wilcox, Hardik K. Doshi, Kevin H. Alderfer, Corey T. Kallenberg