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Digital camera and method for testing the function of a digital camera

A technology for digital cameras and video cameras, used in image analysis, measurement devices, image communication, etc., to solve problems such as camera failures

Inactive Publication Date: 2010-10-20
卡洛加瓦兹服务公开股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the camera may malfunction due to a flaw in its recognition system

Method used

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  • Digital camera and method for testing the function of a digital camera
  • Digital camera and method for testing the function of a digital camera

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Embodiment Construction

[0011] Should figure 1 A motion sensor device comprising a digital video camera 1 according to the invention is schematically shown. The digital video camera 1 contains a sensor element 2 which has a square or matrix of pixels. In front of the sensor element 2 there is a shutter 6 which can be opened or closed. In the open state of the shutter, light can pass from the camera lens 8 to the sensor element 2 . In the closed state of the shutter, light passing from the camera lens 8 to the shutter 6 is blocked, ie no light from outside the camera falls on the sensor element 2 . The digital video camera 1 also contains a processor device 5 which receives data from the sensor element 2 . An amplifier 7 with variable gain is provided to receive pixel data from the sensing element 2 and output this data to the processor device 5 . The processor device 5 is connected to the evaluation station 9 . The processor device 5 is also connected to the gain control input of the amplifier 7...

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Abstract

A digital camera and a method for testing the function of a digital camera. The invention refers to a digital camera 1 which can be used in a motion sensor 4. In order to be able to test the function of the camera, a light source 3 is provided which irradiates at least a part of the sensing matrix 2. The processor device 5 of the camera judges whether the output signal of the sensing matrix 2 corresponds correctly to the light which has irradiated the sensing matrix 2. Various test methods are disclosed, such as using varying wavelengths, ON / OFF-modulation, dependence on shutter time and illumination of various regions of the sensing matrix 2.

Description

technical field [0001] The present invention relates to a digital camera and a method for testing the function of a digital camera. Background technique [0002] Motion sensors in the prior art, eg for door openings, mostly work with Doppler radar. In other words, when an object or person approaches the sensor, the radar beam emitted from the sensor will be reflected by the object or person, and the reflected beam will be frequency shifted (Doppler effect). The reflected radiation is recognized by the motion sensor. However, very slowly moving objects cannot be detected because they are too slow or do not have the Doppler effect. [0003] Using a camera in a motion sensor will provide better results, especially when slow moving or stationary objects should be detected. However, cameras can malfunction due to flaws in their identification systems. SUMMARY OF THE INVENTION [0004] It is therefore an object of the present invention to provide a digital video camera whose...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H04N5/225G06T7/00G01S17/89H04N23/76H04N25/00
CPCH04N5/243H04N5/2251H04N5/2256H04N17/002H04N23/56H04N23/76
Inventor K·索伦森P·索森N·韦纳K·B·瓦尔比约恩
Owner 卡洛加瓦兹服务公开股份有限公司