Public view monitor with tamper deterrent and security
First Claim
Patent Images
1. A public view monitor, comprising:
- an embedded camera that captures images;
a video signal processor circuitry comprised of a Microcontroller Unit (MCU) that receives the captured images from the camera; and
a video obstruction circuitry in communication with the video signal processor circuitry to determine obstruction of the camera, including;
continuously receiving consecutive composite video baseline signal frames from the video signal processor circuitry, and comparing a frame and a next, subsequent consecutive frame for differences in light conditions and spatial noise for a specified number of consecutive frames to determine if criteria for existence of obstruction is met;
if the video obstruction circuitry determines that criteria for existence of obstruction is met, the video obstruction module transmits an interrupt request signal (IRQ) to the video signal processor circuitry to commence further evaluations for obstruction and possible actuation and trigger of an alarm;
the video signal processor circuitry receiving the IRQ determines whether the IRQ is low, if IRQ is finally confirmed as low and ambient light condition information from a photo-sensor indicates a normal lighting condition, then the video signal processor circuitry triggers the alarm if video obstruction alarm has been set to active.
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Abstract
The present invention provides a device, comprising one or more embedded tamper deterrent and security systems that trigger an alarm if the device is tampered.
27 Citations
30 Claims
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1. A public view monitor, comprising:
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an embedded camera that captures images; a video signal processor circuitry comprised of a Microcontroller Unit (MCU) that receives the captured images from the camera; and a video obstruction circuitry in communication with the video signal processor circuitry to determine obstruction of the camera, including; continuously receiving consecutive composite video baseline signal frames from the video signal processor circuitry, and comparing a frame and a next, subsequent consecutive frame for differences in light conditions and spatial noise for a specified number of consecutive frames to determine if criteria for existence of obstruction is met; if the video obstruction circuitry determines that criteria for existence of obstruction is met, the video obstruction module transmits an interrupt request signal (IRQ) to the video signal processor circuitry to commence further evaluations for obstruction and possible actuation and trigger of an alarm; the video signal processor circuitry receiving the IRQ determines whether the IRQ is low, if IRQ is finally confirmed as low and ambient light condition information from a photo-sensor indicates a normal lighting condition, then the video signal processor circuitry triggers the alarm if video obstruction alarm has been set to active. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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Specification