Nxp Usa, Inc.

Freescale Semiconductor,inc.

Mingle Sun

Thomas E Tkacik

Lawrence Loren Case

Bin Li

Rodney D Ziolkowski

Matthew W Brocker

Charles E Cannon

Lihang Zhang

Jun Xie

Wai Hung Lee

Chongbin Fan

Glen G Wienecke

Qiaoyu Ye

Asim A Zaidi

Liyan Xie

Fareeduddin A Mohammed

A hierarchical system firewall, comprising a root security manager, secondary security managers, a firewall controller, and firewalls. The root security manager designates a secondary security manager and allocates a system resource for each domain cluster, and provides firewall configuration schemes between the domain clusters. The secondary security managers add domain identifiers for hosts and devices of domain clusters, and provides a firewall configuration scheme for each domain. The firewall controller adds domain cluster identifiers for the hosts and devices in the system, and adds identification for the secondary security managers; allocates domain identification for a host and a device of a current domain cluster; and configures access permissions for the firewall of each device in the current domain cluster. The firewalls perform permissions control for access to a current device by hosts from different domains or different domain clusters. Further provided in the present invention is a configuration method for the hierarchical system firewall, simplifying system design, and improving system security.

Hierarchical system firewall and configuration method

A camera interface circuit for a barcode scanner includes a binary conversion block and a selection module. The binary conversion block receives image signals from a camera, and converts gray levels of each pixel in each image frame into binary codes. The selection module alternately provides binary codes of one image frame and image signals of a consecutive image frame as outputs.

Camera interface circuit for barcode scanner

A method of encrypting data on a memory device includes receiving a memory transaction request at an inline encryption engine coupled between a processing core and switch fabric in a system on a chip (SOC). The memory transaction request includes a context component and a data component. The context component is analyzed to determine whether the data component will be stored in an encrypted memory region. If the data component will be stored in an encrypted memory region, the data component is encrypted and communicated to a location in the encrypted memory region. The location is based at least on the context component.

Systems and methods for data encryption

A controller for a persistent display device has an overall table of waveform data corresponding to different transitions of pixels from all pixel states to all others for differing operating parameters. A hardware LUT module receives input values containing new and current pixel state data and indexes to identify update requests, stores in LUT table memory space mapping values that are segments of waveform data generated in run time according to the operating parameters of each update request, and places segments of waveform data corresponding to the update requests into LUT output memory space. A SIMD module transposes waveform data of the update requests from the LUT output memory space, and places the transposed waveform data in respective frame scan buffers. An interface receives the transposed waveform data for the display device to update an image displayed on the panel.

Controller for persistent display panel with SIMD module that transposes waveform data

A data processing system includes a boot read only memory (ROM) configured to store boot code; one time programmable (OTP) storage circuitry configured to store patch instructions; a random access memory (RAM); and a processor coupled to the boot ROM, the OTP storage circuitry, and the RAM. The processor is configured to: in response to a reset of the data processing system, copy one or more patch instructions from the OTP storage circuitry into the RAM, and during execution of the boot code, execute a patch instruction from the RAM in place of a boot instruction of the boot code.

Systems and methods for secure boot ROM patch

A semiconductor device includes a processing system including a section of power domain circuitry and a section of coin cell power domain circuitry. The coin cell power domain circuitry is configured to, when power is initially provided to the coin cell power domain circuitry, using power provided by a power management circuit as feedback to determine that the power management circuit provides the power in response to a power request signal being a toggle signal, and determine that the power management circuit provides the power in response to the power request signal being a pulse signal.

Data processing system with protocol determination circuitry

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Shanghai, China

Mingle Sun