Patents by Inventor Tin-Cheung Kung
Tin-Cheung Kung 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: 20240045709Abstract: Implementations describe a computing system that implements a plurality of virtual machines inside a trust domain (TD), enabled via a secure arbitration mode (SEAM) of the processor. A processor includes one or more registers to store a SEAM range of memory, a TD key identifier of a TD private encryption key. The processor is capable of initializing a trust domain resource manager (TDRM) to manage the TD, and a virtual machine monitor within the TD to manage the plurality of virtual machines therein. The processor is further capable of exclusively associating a plurality of memory pages with the TD, wherein the plurality of memory pages associated with the TD is encrypted with a TD private encryption key inaccessible to the TDRM. The processor is further capable of using the SEAM range of memory, inaccessible to the TDRM, to provide isolation between the TDRM and the plurality of virtual machines.Type: ApplicationFiled: July 17, 2023Publication date: February 8, 2024Applicant: Intel CorporationInventors: Ravi L. Sahita, Tin-Cheung Kung, Vedvyas Shanbhogue, Barry E. Huntley, Arie Aharon
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Patent number: 11748146Abstract: Implementations describe a computing system that implements a plurality of virtual machines inside a trust domain (TD), enabled via a secure arbitration mode (SEAM) of the processor. A processor includes one or more registers to store a SEAM range of memory, a TD key identifier of a TD private encryption key. The processor is capable of initializing a trust domain resource manager (TDRM) to manage the TD, and a virtual machine monitor within the TD to manage the plurality of virtual machines therein. The processor is further capable of exclusively associating a plurality of memory pages with the TD, wherein the plurality of memory pages associated with the TD is encrypted with a TD private encryption key inaccessible to the TDRM. The processor is further capable of using the SEAM range of memory, inaccessible to the TDRM, to provide isolation between the TDRM and the plurality of virtual machines.Type: GrantFiled: August 17, 2021Date of Patent: September 5, 2023Assignee: Intel CorporationInventors: Ravi L. Sahita, Tin-Cheung Kung, Vedvyas Shanbhogue, Barry E. Huntley, Arie Aharon
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Publication number: 20230195652Abstract: Methods and apparatus to set guest physical address mapping attributes for a trusted domain In one embodiment, the method includes executing a first one or more of instructions to establish a trusted domain and executing a second one or more of the instructions to add a first memory page to the trusted domain, where the first memory page is private to the trusted domain and a first set of page attributes is set for the first memory page based on the second one or more of the instructions, where the first set of page attributes indicates how the first memory page is mapped in a secure extended page table. The method further includes storing the first set of page attributes for the first memory page in the secure extended page table at a storage location responsive to executing the second one or more of the instructions.Type: ApplicationFiled: December 17, 2021Publication date: June 22, 2023Inventors: Dror CASPI, Ravi SAHITA, Kunal MEHTA, Tin-Cheung KUNG, Hormuzd KHOSRAVI
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Patent number: 11249537Abstract: When power is provided through a USB-C cable from a source device to a sink device, a sudden connection or disconnection of the cable between the two devices may cause a sudden power surge or power drop in at least one of those devices, leading to other problems. To avoid this sudden event from causing potential damage or disruption to one of the devices, in some embodiments a CC pin in the cable is used to announce the impending connection/disconnection, and the device may throttle back its power consumption before power is actually applied to or removed from the power pins.Type: GrantFiled: July 13, 2020Date of Patent: February 15, 2022Assignee: Intel CorporationInventors: Chee Lim Nge, Eugene Gorbatov, Zhongsheng Wang, James G. Hermerding, II, Basavaraj B. Astekar, Jenn Chuan Cheng, Chia-Hung Sophia Kuo, Ashwin Umapathy, Tin-Cheung Kung, Yifan Li, Alexander B. Uan-Zo-Li
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Publication number: 20210373933Abstract: Implementations describe a computing system that implements a plurality of virtual machines inside a trust domain (TD), enabled via a secure arbitration mode (SEAM) of the processor. A processor includes one or more registers to store a SEAM range of memory, a TD key identifier of a TD private encryption key. The processor is capable of initializing a trust domain resource manager (TDRM) to manage the TD, and a virtual machine monitor within the TD to manage the plurality of virtual machines therein. The processor is further capable of exclusively associating a plurality of memory pages with the TD, wherein the plurality of memory pages associated with the TD is encrypted with a TD private encryption key inaccessible to the TDRM. The processor is further capable of using the SEAM range of memory, inaccessible to the TDRM, to provide isolation between the TDRM and the plurality of virtual machines.Type: ApplicationFiled: August 17, 2021Publication date: December 2, 2021Applicant: Intel CorporationInventors: Ravi L. Sahita, Tin-Cheung Kung, Vedvyas Shanbhogue, Barry E. Huntley, Arie Aharon
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Patent number: 11099878Abstract: Implementations describe a computing system that implements a plurality of virtual machines inside a trust domain (TD), enabled via a secure arbitration mode (SEAM) of the processor. A processor includes one or more registers to store a SEAM range of memory, a TD key identifier of a TD private encryption key. The processor is capable of initializing a trust domain resource manager (TDRM) to manage the TD, and a virtual machine monitor within the TD to manage the plurality of virtual machines therein. The processor is further capable of exclusively associating a plurality of memory pages with the TD, wherein the plurality of memory pages associated with the TD is encrypted with a TD private encryption key inaccessible to the TDRM. The processor is further capable of using the SEAM range of memory, inaccessible to the TDRM, to provide isolation between the TDRM and the plurality of virtual machines.Type: GrantFiled: June 28, 2019Date of Patent: August 24, 2021Assignee: Intel CorporationInventors: Ravi L. Sahita, Tin-Cheung Kung, Vedvyas Shanbhogue, Barry E. Huntley, Arie Aharon
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Patent number: 11093020Abstract: Techniques are provided for managing power delivery to multiple universal serial bus (USB) type-C ports of a desktop computer system. In an example, a method can include providing a first power level to a USB power delivery controller during a non-sleep mode operation of the desktop computer, and providing a second power level to the USB power delivery controller when the computer is in a sleep mode, the second power level configured to provide default charge power to a connected device when the computer is in the sleep mode.Type: GrantFiled: November 21, 2017Date of Patent: August 17, 2021Assignee: Intel CorporationInventors: Vijaykumar B. Kadgi, Barnes Cooper, Nivedita Aggarwal, Venkataramani Gopalakrishnan, Jenn Chuan Cheng, Basavaraj Astekar, Charuhasini Sunderraman, Han Kung Chua, Anil Baby, Tin-Cheung Kung, Chia-Hung Kuo
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Publication number: 20200409734Abstract: Implementations describe a computing system that implements a plurality of virtual machines inside a trust domain (TD), enabled via a secure arbitration mode (SEAM) of the processor. A processor includes one or more registers to store a SEAM range of memory, a TD key identifier of a TD private encryption key. The processor is capable of initializing a trust domain resource manager (TDRM) to manage the TD, and a virtual machine monitor within the TD to manage the plurality of virtual machines therein. The processor is further capable of exclusively associating a plurality of memory pages with the TD, wherein the plurality of memory pages associated with the TD is encrypted with a TD private encryption key inaccessible to the TDRM. The processor is further capable of using the SEAM range of memory, inaccessible to the TDRM, to provide isolation between the TDRM and the plurality of virtual machines.Type: ApplicationFiled: June 28, 2019Publication date: December 31, 2020Inventors: Ravi L. Sahita, Tin-Cheung Kung, Vedvyas Shanbhogue, Barry E. Huntley, Arie Aharon
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Patent number: 10860522Abstract: A method and system for manages mapping of universal serial bus (USB) connectors to a plurality of USB host controllers. The method determines an enumeration of USB connectors in a system, identifying USB host controllers in the system, generating a grouping for a USB connector with USB host controllers, and configures USB routing in the system to map the USB connector with the USB host controllers according to the grouping.Type: GrantFiled: May 19, 2017Date of Patent: December 8, 2020Assignee: Intel CorporationInventors: Tin-Cheung Kung, Chia-Hung S. Kuo, Nivedita Aggarwal
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Publication number: 20200341530Abstract: When power is provided through a USB-C cable from a source device to a sink device, a sudden connection or disconnection of the cable between the two devices may cause a sudden power surge or power drop in at least one of those devices, leading to other problems. To avoid this sudden event from causing potential damage or disruption to one of the devices, in some embodiments a CC pin in the cable is used to announce the impending connection/disconnection, and the device may throttle back its power consumption before power is actually applied to or removed from the power pins.Type: ApplicationFiled: July 13, 2020Publication date: October 29, 2020Applicant: Intel CorporationInventors: Chee Lim Nge, Eugene Gorbatov, Zhongsheng Wang, James G. Hermerding, II, Basavaraj B. Astekar, Jenn Chuan Cheng, Chia-Hung Sophia Kuo, Ashwin Umapathy, Tin-Cheung Kung, Yifan Li, Alexander B. Uan-Zo-Li
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Patent number: 10712801Abstract: When power is provided through a USB-C cable from a source device to a sink device, a sudden connection or disconnection of the cable between the two devices may cause a sudden power surge or power drop in at least one of those devices, leading to other problems. To avoid this sudden event from causing potential damage or disruption to one of the devices, in some embodiments a CC pin in the cable is used to announce the impending connection/disconnection, and the device may throttle back its power consumption before power is actually applied to or removed from the power pins.Type: GrantFiled: June 30, 2017Date of Patent: July 14, 2020Assignee: Intel CorporationInventors: Chee Lim Nge, Eugene Gorbatov, Zhongsheng Wang, James G. Hermerding, II, Basavaraj B. Astekar, Jenn Chuan Cheng, Chia-Hung Sophia Kuo, Ashwin Umpathy, Tin-Cheung Kung, Yifan Li, Alexander B. Uan-Zo-Li
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Patent number: 10642665Abstract: Particular embodiments described herein provide for an electronic device that can receive data from an operating system in an electronic device, where the data is related to hardware that is in communication with the electronic device through a multimodal interface and communicate the data and/or related data to a local policy manager, where the local policy manager is in communication with the multimodal interface. The multimodal interface can be configured to support power transfers, directionality, and multiple input/output (I/O) protocols on the same interface.Type: GrantFiled: March 21, 2016Date of Patent: May 5, 2020Assignee: Intel CorporationInventors: Peter S. Adamson, Nivedita Aggarwal, Karunakara Kotary, Abdul Rahman Ismail, Tin-Cheung Kung, David T. Hines, Chia-Hung Sophia Kuo, Ajay V. Bhatt, Karthi R. Vadivelu, Prashant Sethi
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Patent number: 10585721Abstract: Particular embodiments described herein provide for an electronic device that can receive data from an operating system in an electronic device, where the data is related to hardware that is in communication with the electronic device through a multimodal interface and communicate the data and/or related data to a local policy manager, where the local policy manager is in communication with the multimodal interface. The multimodal interface can be configured to support power transfers, directionality, and multiple input/output (I/O) protocols on the same interface.Type: GrantFiled: March 21, 2016Date of Patent: March 10, 2020Assignee: Intel CorporationInventors: Peter S. Adamson, Nivedita Aggarwal, Karunakara Kotary, Abdul Rahman Ismail, Tin-Cheung Kung, David T. Hines, Chia-Hung Sophia Kuo, Ajay V. Bhatt, Karthi R. Vadivelu, Prashant Sethi
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Patent number: 10521386Abstract: Various techniques for enabling the control and monitoring of a USB device mode controller to a USB-C connector, for the performance of a USB device mode data connection, are disclosed herein. In an example, a computing system that includes multiple USB-C connectors but a single USB device mode controller may manage the availability of the controller to a particular connector. The computing system may determine availability of a USB device mode controller to control the first USB-C connector, wherein the attempted data connection occurs with the first USB-C connector configured as an upstream facing port. The computing system may further perform, in response, a data role swap of the first USB-C connector to configure the first USB-C connector as a downstream facing port. The computing system may, further continue the attempted data connection with the remote computing system via the first USB-C connector configured as a downstream facing port.Type: GrantFiled: August 23, 2018Date of Patent: December 31, 2019Assignee: Intel CorporationInventors: Vijaykumar B. Kadgi, Tin-Cheung Kung, Nivedita Aggarwal, Chia-Hung Kuo, Prashant Sethi
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Publication number: 20190065423Abstract: Various techniques for enabling the control and monitoring of a USB device mode controller to a USB-C connector, for the performance of a USB device mode data connection, are disclosed herein. In an example, a computing system that includes multiple USB-C connectors but a single USB device mode controller may manage the mapping of the controller to a particular connector, through operations that identify the mapping and the characteristics of the connector, process a request to change the mapping of the device mode controller, and perform the change to the mapping of the device mode controller. Such a change may include a disconnection or reassignment of a particular USB-C connector to the controller. Further examples to determine the availability of a USB device mode controller, and respond to a scenario where the USB device mode controller is not available, are also disclosed.Type: ApplicationFiled: August 23, 2018Publication date: February 28, 2019Inventors: Vijaykumar B. Kadgi, Tin-Cheung Kung, Nivedita Aggarwal, Chia-Hung Kuo, Prashant Sethi
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Publication number: 20190033953Abstract: Techniques are provided for managing power delivery to multiple universal serial bus (USB) type-C ports of a desktop computer system. In an example, a method can include providing a first power level to a USB power delivery controller during a non-sleep mode operation of the desktop computer, and providing a second power level to the USB power delivery controller when the computer is in a sleep mode, the second power level configured to provide default charge power to a connected device when the computer is in the sleep mode.Type: ApplicationFiled: November 21, 2017Publication date: January 31, 2019Inventors: Vijaykumar B. Kadgi, Barnes Cooper, Nivedita Aggarwal, Venkataramani Gopalakrishnan, Jenn Chuan Cheng, Basavaraj Astekar, Charuhasini Sunderraman, Han Kung Chua, Anil Baby, Tin-Cheung Kung, Chia-Hung Kuo
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Publication number: 20190004584Abstract: When power is provided through a USB-C cable from a source device to a sink device, a sudden connection or disconnection of the cable between the two devices may cause a sudden power surge or power drop in at least one of those devices, leading to other problems. To avoid this sudden event from causing potential damage or disruption to one of the devices, in some embodiments a CC pin in the cable is used to announce the impending connection/disconnection, and the device may throttle back its power consumption before power is actually applied to or removed from the power pins.Type: ApplicationFiled: June 30, 2017Publication date: January 3, 2019Applicant: Intel CorporationInventors: Chee Lim Nge, Eugene Gorbatov, Zhongsheng Wang, James G. Hermerding, II, Basavaraj B. Astekar, Jenn Chuan Cheng, Chia-Hung Sophia Kuo, Ashwin Umapathy, Tin-Cheung Kung, Yifan Li, Alexander B. Uan-Zo-Li
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Publication number: 20180336159Abstract: A method and system for manages mapping of universal serial bus (USB) connectors to a plurality of USB host controllers. The method determines an enumeration of USB connectors in a system, identifying USB host controllers in the system, generating a grouping for a USB connector with USB host controllers, and configures USB routing in the system to map the USB connector with the USB host controllers according to the grouping.Type: ApplicationFiled: May 19, 2017Publication date: November 22, 2018Inventors: Tin-Cheung KUNG, Chia-Hung S. KUO, Nivedita AGGARWAL
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Patent number: 10089247Abstract: One embodiment provides an apparatus. The apparatus includes an input output memory management unit (I/O MMU), a non-secure operating system (OS) driver, a secure OS driver and a virtual machine monitor (VMM). The I/OMMU is to couple an I/O Controller to a memory. The I/O Controller is coupled to a secure device and a non-secure device and has one I/O Controller identifier. The non-secure OS driver is associated with the non-secure device. The secure OS driver is associated with the secure device. The VMM is to allocate a secure address space to a secure OS and a non-secure address space to a non-secure OS. The secure address space is non-overlapping with the non-secure address space.Type: GrantFiled: September 30, 2016Date of Patent: October 2, 2018Assignee: Intel CorporationInventors: Nitin V. Sarangdhar, Baiju V. Patel, Tin-Cheung Kung, Joseph F. Cihula, Prashant Sethi, Vinay Kumar Rangineni
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Patent number: 10078608Abstract: Various techniques for enabling the control and monitoring of a USB device mode controller to a USB-C connector, for the performance of a USB device mode data connection, are disclosed herein. In an example, a computing system that includes multiple USB-C connectors but a single USB device mode controller may manage the mapping of the controller to a particular connector, through operations that identify the mapping and the characteristics of the connector, process a request to change the mapping of the device mode controller, and perform the change to the mapping of the device mode controller. Such a change may include a disconnection or reassignment of a particular USB-C connector to the controller. Further examples to determine the availability of a USB device mode controller, and respond to a scenario where the USB device mode controller is not available, are also disclosed.Type: GrantFiled: September 28, 2016Date of Patent: September 18, 2018Assignee: Intel CorporationInventors: Vijaykumar B. Kadgi, Tin-Cheung Kung, Nivedita Aggarwal, Chia-Hung Kuo, Prashant Sethi