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Control method, control device and camera device of camera system

A technology of a control device and a control method, which is applied to parts of television systems, parts of color televisions, televisions, etc., can solve problems such as pixel crosstalk, image ghosting, information overlapping, etc., and achieve the effect of solving ghosting problems.

Active Publication Date: 2022-07-26
WEIHAI HUALING OPTO ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The main purpose of this application is to provide a control method, a control device and a camera device for a camera system, so as to solve the problems in the prior art that the information on the manuscript is overlapped, resulting in crosstalk between pixels and causing image ghosting

Method used

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  • Control method, control device and camera device of camera system
  • Control method, control device and camera device of camera system
  • Control method, control device and camera device of camera system

Examples

Experimental program
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Embodiment 1

[0082] like Figure 5 As shown in the camera device, the camera device includes a camera system and a control system. The camera system is provided with a frame body 206 that plays a supporting role. The frame body 206 is provided with a plurality of lenses 200. The number of the lenses 200 can be 4. A circuit board 203 is provided below the lens 200, and photoelectric conversion chips 201 are respectively provided on the circuit board 203 directly below the four lenses 200. The number of the photoelectric conversion chips 201 may be four, and the lenses 200 and the photoelectric conversion chips The chips 201 are in one-to-one correspondence, and a plurality of light sources 202 are uniformly arranged above the lens 200 . The back of the circuit board is provided with a first socket 207. The above-mentioned control system includes a circuit board 203, an FPGA chip 204 and a light source control chip 205. The above-mentioned circuit board 203 is provided with a second socket 2...

Embodiment 2

[0088] Figure 7 In order to use the above-mentioned MOS tube 303 to control the above-mentioned light source 202 simple schematic diagram, Figure 8 After adding the Vdrive voltage to the G and S terminals of the MOS transistor 303, the voltage and drain current I D change curve. It can be seen from the figure that from adding V drive After the voltage, to I D When the voltage reaches the maximum value, there is a time period of Δt20. Although the time is relatively short, a very short light source lighting time is required, which causes a contradiction: if the camera shutter is opened, the above light source is triggered in a very short period of time. 202 is on and off, wherein, the above-mentioned light source 202 can be an LED. Figure 9 is shown, or the time when the brightness is stable is relatively short, such as Figure 10 shown. The final result will be that the light-emitting brightness of the light source is not enough, and the exposure amount received by th...

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Abstract

The present application provides a control method, control device and camera device for a camera system. The camera system includes a lens unit, a photoelectric conversion unit, a light source unit, and a switch unit. The photoelectric conversion unit is located at one side of the lens unit, and the light source unit is located at the lens unit. On the side away from the photoelectric conversion unit, the outgoing light of the lens unit enters the photoelectric conversion unit, the switch unit is electrically connected with the light source unit and is used to control the operation of the light source unit, and the control method includes: before controlling the operation of the photoelectric conversion unit, controlling The switch unit is turned on to light up the light source unit; when the photoelectric conversion unit is controlled to work for a first predetermined period of time, the switch unit is controlled to be turned off; after the photoelectric conversion unit is controlled to continue to work for a second predetermined period of time, the photoelectric conversion unit is controlled to stop working, and the switch The turn-on time of the unit is less than the working time of the photoelectric conversion unit. This method avoids the existing problem of overlapping of information on the original with the movement of the original.

Description

technical field [0001] The present application relates to the field of cameras, and in particular, to a control method of a camera system, a control device, and a camera device. Background technique [0002] Existing area scan cameras, whether it is a CCD camera or a CMOS camera, whether it is a rolling shutter exposure camera or a global exposure camera, have their own exposure time control function and do not need to control the light source. [0003] In the field of high-speed scanning and high-resolution detection, the length and width of a unit pixel are very small. During scanning, the original moving speed is very fast, and the exposure time of the camera itself is relatively long. Therefore, in the exposure time of one frame, with the movement of the original, the information on the original will inevitably overlap, resulting in crosstalk between pixels, resulting in ghosting of the image. [0004] The above information disclosed in this Background section is only f...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N5/225H04N5/235
CPCH04N23/55H04N23/54H04N23/73
Inventor 姜利韩晓伟
Owner WEIHAI HUALING OPTO ELECTRONICS CO LTD
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