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Power switching circuit and network camera using same

A technology of power conversion circuit and network camera, which is applied to the parts of color TV, the parts of TV system, the conversion device of output power, etc., can solve the problems that are not conducive to improving the versatility of the main board and increase the difficulty of the main board design.

Inactive Publication Date: 2012-04-04
HONG FU JIN PRECISION IND (SHENZHEN) CO LTD +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Obviously, this design method will increase the difficulty of the design of the motherboard, which is not conducive to improving the versatility of the motherboard

Method used

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  • Power switching circuit and network camera using same
  • Power switching circuit and network camera using same
  • Power switching circuit and network camera using same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0012] see figure 1 , the present invention provides a power conversion circuit 100 , which is applied in a network camera 200 .

[0013] The network camera 200 includes a main board 220 and a sub-board 240 . The motherboard 220 is provided with a system-on-chip (SOC) 222 , a system power supply 224 , audio chips, network chips and other electronic components (not shown). The system-on-a-chip 222 makes the network camera 200 finally output video information through the network by calling various programs stored inside. The system power supply 224 is used to provide operating voltage for the electronic components on the main board 220 and the sub-board 240 . A photo-sensing element 242 and a sub-power supply 244 are disposed on the sub-board 240 . The light sensing element 242 can be a CMOS or CCD sensor, which is used to convert optical signals into digital electrical signals, so as to realize image acquisition, storage and transmission. The sub-power supply 244 is electri...

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PUM

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Abstract

The invention provides a power switching circuit and a network camera using the same. The network camera comprises a system power source and a light sensing element, and the power switching circuit comprises a voltage division circuit and a voltage conversion module. The voltage division circuit comprises a first voltage division element and a second voltage division element which are in series connection with each other, and the voltage conversion module comprises a linear voltage regulator. The linear voltage regulator comprises an input end, a feedback end and an output end, wherein the input end is in electrical connection with the system power source, the feedback end is electrically connected between the first voltage division element and the second voltage division element, and the output end is in electric connection with the first voltage division element. The power switching circuit improves universality of a network camera mainboard and reduces design difficulty of the mainboard.

Description

technical field [0001] The invention relates to a power conversion circuit, in particular to a power conversion circuit applied to a network camera. Background technique [0002] In the design of network cameras, the central processing unit (Central processing unit, CPU) / system-on-chip (System on Chip, SOC), image compression chip, audio chip, network chip and system power supply are usually arranged on a motherboard. Light sensing elements such as complementary metal oxide semiconductor (Complementary Metal Oxide Semiconductor, CMOS) sensors or charge coupled device (Charge Coupled Device, CCD) sensors and sub-power supplies that provide operating voltages for the light sensing elements are arranged on a daughter board , where the voltage of the sub-power supply is provided by the system power supply. However, when it is necessary to replace different types of light sensing elements, in most cases it is not only necessary to disassemble and assemble on the daughter board, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02M3/06H02M1/14H04N5/225
Inventor 谢明志
Owner HONG FU JIN PRECISION IND (SHENZHEN) CO LTD