Securely transferring key materials between processors in a multi-processor device

    公开(公告)号:US11770246B2

    公开(公告)日:2023-09-26

    申请号:US17010011

    申请日:2020-09-02

    Abstract: A multi-processor device includes a first processor implemented with a secured key derivation and storage component and a second processor implemented without a secured key derivation and storage component. In operation, the second processor is configured to execute an initial boot process by loading a limited functionality boot image when the multi-processor device is powered on. During the execution of the initial boot process, the second processor provisions a secure storage container to hold a key material and sends a request to the first processor for a key material. In response, the second processor receives a key material derived at the first processor. The second processor then stores the key material in a volatile memory portion of the secure storage container. The second processor executes a main boot process only after erasing instances of the key material temporarily stored outside of the secure storage container.

    DYNAMIC RFPA OPERATING MODES FOR A CONVERGED COMMUNICATION DEVICE

    公开(公告)号:US20230261681A1

    公开(公告)日:2023-08-17

    申请号:US17651302

    申请日:2022-02-16

    CPC classification number: H04B1/1615 H04B1/006 H04B1/44

    Abstract: A converged device with dual RFPA technology for a dynamic switchable mode. One example provides a communication device comprising a RF transmitter system and a controller. The RF transmitter system includes a plurality of RFPAs, each RFPA having a biasing system and outputting an output signal, and a summing junction, wherein the output signal of each RFPA are combined to form an output RF transmitter signal. The controller is configured to control the biasing state of each biasing system to a nominal bias state for a first mode of the communication device. The controller is configured to control a first plurality of offset voltages applied to each biasing system for a second mode of the communication device. The controller is configured to control a second plurality of offset voltages applied to each biasing system for a third mode of the communication device.

    Portable radio with thermal insulation barrier

    公开(公告)号:US11714308B2

    公开(公告)日:2023-08-01

    申请号:US17407122

    申请日:2021-08-19

    CPC classification number: G02F1/133345 G02F1/13338 G02F1/13392

    Abstract: A portable radio includes a housing having a front display. The front display includes a liquid crystal display structure, a first layer of touch panel rear glass disposed exterior to the liquid crystal display structure, and a second layer of touch panel front glass disposed exterior to the first layer of touch panel rear glass. The second layer of touch panel front glass provides a viewable surface and user interface. The front display also includes a vacuum layer disposed between the first layer of touch panel rear glass and the second layer of touch panel front glass, and a plurality of spacers disposed in the vacuum layer that maintain a gap. The front display also includes a seal that at least partially seals and maintains a vacuum within the vacuum layer.

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