Fault detection within an analog-to-digital converter

    公开(公告)号:US12184297B2

    公开(公告)日:2024-12-31

    申请号:US18159305

    申请日:2023-01-25

    Abstract: A circuit includes an analog-to-digital converter (ADC) having selectable first and second analog channel inputs; a window comparator that compares a digital value output by the ADC to first and second threshold values defining a window and that asserts a trigger signal in response to the digital value being outside the window; a programmable clock circuit that provides a clock signal to the ADC; a controller that generates, in response to assertion of the trigger signal, a sample rate control signal to cause the clock circuit to increase the frequency of the clock signal and toggle selection between the first and second analog channel inputs; and comparison circuitry that compares a first digital output from the ADC to a second digital output from the ADC.

    Dynamic security protection in configurable analog signal chains

    公开(公告)号:US12013436B2

    公开(公告)日:2024-06-18

    申请号:US18175730

    申请日:2023-02-28

    CPC classification number: G01R31/318536 G06F21/31 G06F21/45 H04L63/1433

    Abstract: A system and method for dynamically protecting against security vulnerabilities in a reconfigurable signal chain. The system includes a signal chain formed from at least a first component connected with a second component. The first component has a set of source outputs and a first authentication block, and the second signal chain component has a set of destination inputs and a second authentication block. The system also includes a signal chain configurator that populates the first authentication block with at least one validated endpoint from the set of destination inputs. A signal chain integrity block, which is communicatively coupled with the first authentication block and the second authentication block, identifies a source-destination pair from one or more endpoint pairs formed from the at least one validated endpoint and the set of source outputs. The signal chain integrity block propagates the source-destination pair to the first authentication block and the second authentication block. The second authentication block authenticates any received input using the source-destination pair.

    Modifying fusion offset data in sequential stereoscopic image frames
    6.
    发明授权
    Modifying fusion offset data in sequential stereoscopic image frames 有权
    修改顺序立体图像帧中的融合偏移数据

    公开(公告)号:US09432654B2

    公开(公告)日:2016-08-30

    申请号:US13669017

    申请日:2012-11-05

    CPC classification number: H04N13/133 H04N13/128 H04N13/144

    Abstract: The present invention is drawn to a device for use with first stereoscopic data, second stereoscopic data and a display device. The device includes an input portion, a convergence data detecting portion, a convergence plane portion, a comparing portion and a modification portion. The input portion can receive the first stereoscopic data and the second stereoscopic data. The convergence data detecting portion can detect first convergence data within the first stereoscopic data and can detect second convergence data within the second stereoscopic data. The convergence plane portion can determine a first convergence plane based on the first convergence data and can determine a second convergence plane based on the second convergence data. The comparing portion can compare the first, convergence plane and the second convergence plane and can generate a convergence plane comparison. The modification portion can modify the first convergence data based on the convergence plane comparison.

    Abstract translation: 本发明涉及一种用于第一立体数据,第二立体数据和显示装置的装置。 该装置包括输入部分,会聚数据检测部分,会聚平面部分,比较部分和修改部分。 输入部分可以接收第一立体数据和第二立体数据。 会聚数据检测部分可以检测第一立体数据内的第一会聚数据,并且可以检测第二立体数据内的第二会聚数据。 会聚平面部分可以基于第一会聚数据确定第一会聚平面,并且可以基于第二会聚数据确定第二会聚平面。 比较部分可以比较第一个会聚平面和第二个会聚平面,并可以产生一个会聚平面比较。 修改部分可以基于会聚平面比较来修改第一收敛数据。

    Selective Picture-Based Encryption of Video Streams
    7.
    发明申请
    Selective Picture-Based Encryption of Video Streams 审中-公开
    视频流的选择性图像加密

    公开(公告)号:US20160119660A1

    公开(公告)日:2016-04-28

    申请号:US14525197

    申请日:2014-10-27

    CPC classification number: H04N21/23476 H04N21/8456

    Abstract: A method for encrypting a video stream in a video encoder is provided that includes receiving the video stream and encrypting randomly selected pictures in the video stream as the video stream is encoded.

    Abstract translation: 提供一种用于对视频编码器中的视频流进行加密的方法,该方法包括当视频流被编码时,接收视频流并对视频流中随机选择的图像进行加密。

    METHODS AND APPARATUS TO IMPLEMENT SAFETY DIAGNOSTICS

    公开(公告)号:US20250155327A1

    公开(公告)日:2025-05-15

    申请号:US18508889

    申请日:2023-11-14

    Abstract: An example apparatus includes: interface circuitry; and diagnostic circuitry configured to: determine a set of signal chains that may be used by an application, a signal chain in the set to include an ordered sequence of one or more circuit modules; identify a first signal chain from the set that was used by the application; and run, in response to a determination that the circuit modules in the first signal chain are idle, a diagnostic test on the first signal chain.

    METHODS AND APPARATUS TO PROTECT AGAINST VOLTAGE GLITCH ATTACKS IN MICROCONTROLLERS

    公开(公告)号:US20250111096A1

    公开(公告)日:2025-04-03

    申请号:US18375732

    申请日:2023-10-02

    Abstract: Methods, apparatus, systems, and articles of manufacture are disclosed to protect against voltage glitch attacks in microcontrollers. An example apparatus includes logic circuitry operable to, in response to a voltage glitch, pause processing circuitry; number generator circuitry operable to generate a number; a counter operable to, after the voltage glitch ends, adjust a count corresponding to the number; and the logic circuitry operable to unpause the processing circuitry after the count reaches a value.

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