Integrated fault-tolerant augmented area viewing system
First Claim
1. A circuit, comprising:
- a processor having a processor input and a processor output, the processor input adapted to be coupled to a blind spot sensor, the processor configured to;
receive a safety signal from the blind spot sensor; and
generate at the processor output a blind spot camera video output signal in response to the safety signal;
an input hash generator having an input hash generator input and an input hash generator output, the input hash generator input coupled to the processor output, and the input hash generator configured to generate at the input hash generator output a first hash of the blind spot camera video output signal;
selector circuitry coupled to the processor and adapted to be coupled to a controller, the selector circuitry configured to select a video output signal, the selected video output signal being either;
the blind spot camera video output signal, if the safety signal is responsive to an action by a user;
or otherwise a controller video output signal from the controller;
a buffer having a buffer input and a buffer output, the buffer input coupled to the selector circuitry and adapted to be coupled to a display, the buffer configured to output at the buffer output the selected video output signal to the display for viewing by the user;
an output hash generator having an output hash generator input and an output hash generator output, the output hash generator input coupled to the buffer, and the output hash generator configured to generate at the output hash generator output a second hash of the selected video output signal; and
a bad frame detector having a detector input, the detector input coupled to the input hash generator output and to the output hash generator output, the bad frame detector configured to compare the first and second hashes to detect a video fault.
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Accused Products
Abstract
An integrated fault-tolerant augmented area viewing system includes, for example, a subsystem processor for receiving a safety signal for blind spot monitoring from a blind spot sensor and for generating a subsystem processor video output signal in response to the received safety signal. Selector circuitry selects the subsystem processor video output signal or a master controller video output signal received from a master controller and generates a selected video output signal in response. The selector circuitry performs the selection of the video output signal selection in response to receiving a safety request signal generated in response to a user action. A buffer outputs the selected video output signal for displaying on a display for viewing by the user.
22 Citations
20 Claims
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1. A circuit, comprising:
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a processor having a processor input and a processor output, the processor input adapted to be coupled to a blind spot sensor, the processor configured to;
receive a safety signal from the blind spot sensor; and
generate at the processor output a blind spot camera video output signal in response to the safety signal;an input hash generator having an input hash generator input and an input hash generator output, the input hash generator input coupled to the processor output, and the input hash generator configured to generate at the input hash generator output a first hash of the blind spot camera video output signal; selector circuitry coupled to the processor and adapted to be coupled to a controller, the selector circuitry configured to select a video output signal, the selected video output signal being either;
the blind spot camera video output signal, if the safety signal is responsive to an action by a user;
or otherwise a controller video output signal from the controller;a buffer having a buffer input and a buffer output, the buffer input coupled to the selector circuitry and adapted to be coupled to a display, the buffer configured to output at the buffer output the selected video output signal to the display for viewing by the user; an output hash generator having an output hash generator input and an output hash generator output, the output hash generator input coupled to the buffer, and the output hash generator configured to generate at the output hash generator output a second hash of the selected video output signal; and a bad frame detector having a detector input, the detector input coupled to the input hash generator output and to the output hash generator output, the bad frame detector configured to compare the first and second hashes to detect a video fault. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 18)
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10. A system, comprising:
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a processor formed on a substrate, the processor having a processor input and a processor output, the processor input adapted to be coupled to a blind spot sensor, and the processor configured to;
receive a safety signal from the blind spot sensor; and
generate at the processor output a blind spot camera video output signal in response to the safety signal;a controller, formed on the substrate, the controller configured to configure the processor; an input hash generator having an input hash generator input and an input hash generator output, the input hash generator input coupled to the processor output, and the input hash generator configured to generate at the input hash generator output a first hash of the blind spot camera video output signal; selector circuitry coupled to the processor and to the controller, the selector circuitry configured to select a video output signal, the selected video output signal being either;
the blind spot camera video output signal, if the safety signal is responsive to an action by a user;
or otherwise a controller video output signal from the controller;a buffer having a buffer input and a buffer output, the buffer input coupled to the selector circuitry and adapted to be coupled to a display, the buffer configured to output at the buffer output the selected video output signal to the display for viewing by the user; an output hash generator having an output hash generator input and an output hash generator output, the output hash generator input coupled to the buffer, and the output hash generator configured to generate at the output hash generator output a second hash of the selected video output signal; and a bad frame detector having a detector input, the detector input coupled to the input hash generator output and to the output hash generator output, the bad frame detector configured to compare the first and second hashes to detect a video fault. - View Dependent Claims (11, 12, 13, 19)
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14. A method, comprising:
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receiving, by executing instructions with a processor formed on a substrate, a safety signal from a blind spot sensor; generating, by executing instructions with the processor, a blind spot camera video output signal in response to the safety signal; generating, by executing instructions with the processor, a first hash of the blind spot camera video output signal; selecting, by executing instructions with the processor, a video output signal, the selected video output signal being either;
the blind spot camera video output signal, if the safety signal is responsive to an action by a user;
or otherwise a controller video output signal from a controller;outputting, by executing instructions with the processor, the selected video output signal to a display for viewing by the user; generating a second hash of the selected video output signal; and comparing, by executing instructions with the processor, the first and second hashes to detect a video failure. - View Dependent Claims (15, 16, 17, 20)
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Specification