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).

  • Patent number: 10706825
    Abstract: 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: Grant
    Filed: September 29, 2015
    Date of Patent: July 7, 2020
    Assignee: 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
  • Publication number: 20200149932
    Abstract: 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: Application
    Filed: November 20, 2019
    Publication date: May 14, 2020
    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
  • Publication number: 20200150745
    Abstract: 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: Application
    Filed: January 17, 2020
    Publication date: May 14, 2020
    Inventors: Anand Dalal, Joshua P. de Cesare
  • Patent number: 10571996
    Abstract: 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: Grant
    Filed: August 31, 2017
    Date of Patent: February 25, 2020
    Assignee: Apple Inc.
    Inventors: Anand Dalal, Joshua P. de Cesare
  • Publication number: 20200012331
    Abstract: 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: Application
    Filed: September 20, 2019
    Publication date: January 9, 2020
    Inventors: Joshua P. de CESARE, Jonathan J. ANDREWS, Jeffrey R. WILCOX
  • Patent number: 10496572
    Abstract: 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: Grant
    Filed: March 6, 2017
    Date of Patent: December 3, 2019
    Assignee: Apple Inc.
    Inventors: John H. Kelm, Bernard J. Semeria, Joshua P. de Cesare, Shih-Chieh Wen
  • Patent number: 10488230
    Abstract: 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: Grant
    Filed: June 26, 2018
    Date of Patent: November 26, 2019
    Assignee: 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
  • Publication number: 20190340998
    Abstract: 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: Application
    Filed: April 15, 2019
    Publication date: November 7, 2019
    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
  • Patent number: 10423212
    Abstract: 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: Grant
    Filed: November 17, 2017
    Date of Patent: September 24, 2019
    Assignee: Apple Inc.
    Inventors: Joshua P. de Cesare, Jonathan J. Andrews, Jeffrey R. Wilcox
  • Patent number: 10417429
    Abstract: 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: Grant
    Filed: September 29, 2017
    Date of Patent: September 17, 2019
    Assignee: 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
  • Publication number: 20190188397
    Abstract: 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: Application
    Filed: September 27, 2018
    Publication date: June 20, 2019
    Inventors: Wade Benson, Michael J. Smith, Joshua P. de Cesare
  • Publication number: 20190114433
    Abstract: A method and apparatus for protecting boot variables is disclosed. A computer system includes a main processor and an auxiliary processor. The auxiliary processor is associated with 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: Application
    Filed: November 30, 2018
    Publication date: April 18, 2019
    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
  • Patent number: 10261894
    Abstract: 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: Grant
    Filed: March 2, 2017
    Date of Patent: April 16, 2019
    Assignee: 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
  • Patent number: 10262622
    Abstract: This application relates to systems, methods, and apparatus for transitioning 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: Grant
    Filed: September 9, 2016
    Date of Patent: April 16, 2019
    Assignee: 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
  • Publication number: 20190102558
    Abstract: 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 is associated with 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: Application
    Filed: November 30, 2018
    Publication date: April 4, 2019
    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
  • Publication number: 20180348843
    Abstract: 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: Application
    Filed: November 17, 2017
    Publication date: December 6, 2018
    Inventors: Joshua P. de CESARE, Jonathan J. ANDREWS, Jeffrey R. WILCOX
  • Publication number: 20180349609
    Abstract: 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: Application
    Filed: September 29, 2017
    Publication date: December 6, 2018
    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
  • Publication number: 20180349608
    Abstract: 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: Application
    Filed: September 29, 2017
    Publication date: December 6, 2018
    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
  • Publication number: 20180313673
    Abstract: 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: Application
    Filed: June 26, 2018
    Publication date: November 1, 2018
    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
  • Patent number: 10031000
    Abstract: 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: Grant
    Filed: August 13, 2014
    Date of Patent: July 24, 2018
    Assignee: 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