Projector and power supply control method thereof

A projector and external power supply technology, applied in the field of projectors, can solve the problems of limited power supply wattage, unable to meet the power consumption of projection devices, and unable to maintain operation of projection devices

Active Publication Date: 2011-05-11
CORETRONIC
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the limited power wattage (generally 2.5W) provided by the USB interface of the desktop computer device or notebook computer device, it may not be able to meet the overall power consumption requirements of the projection device, causing the projection device to shut down. (shut down) therefore unable to maintain operations

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  • Projector and power supply control method thereof
  • Projector and power supply control method thereof
  • Projector and power supply control method thereof

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Embodiment Construction

[0033] The aforementioned and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment in conjunction with the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or back, etc., are only referring to the directions of the drawings. Accordingly, the directional terms are used to illustrate and not to limit the invention.

[0034] figure 1 A schematic diagram of a projection system 10 according to an embodiment of the present invention is shown. refer to figure 1 , the projection system 10 includes a projector 100 and an external device 150, and the projector 100 is, for example, a portable miniature projector. The projector 100 includes a battery 101 , an interface (interface) 103 , a selection unit 105 , a light emitting element 107 , a driver 109 , a central processing unit (CPU) 111 , and other rela...

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Abstract

The invention discloses a projector and a power supply control method thereof. The projector comprises a battery, an interface, a selection unit, a light emitting element, a driver and a central processing unit, wherein the battery is used for supplying battery power; the interface is used for receiving and transmitting external power; the selection unit is used for receiving the battery power and the external power and outputting one of the battery power and the external power as an operating voltage of the projector according to control signals; the driver is used for receiving drive signals and driving the light emitting element; and the central processing unit is used for outputting control signals of the first state to control the selection unit to select and output the external power when the electric quantity of the battery is in a low level and the interface receives the external power, and the the central processing unit is also used for adjusting the intensity of the drive signals output by the central processing unit according to the electric quantity of the external power so that the projector keeps operating.

Description

technical field [0001] The present invention relates to a projector, and in particular to a projector and a power supply control method thereof. Background technique [0002] Generally speaking, since a projector can project images on a larger screen so that more people can watch the content displayed on the screen at the same time, it is often used in public places such as companies and schools. In addition, as the images of household display products tend to be larger in size, projection devices are gradually popularized in ordinary households and become a common electronic product in modern life. [0003] With the advancement of science and technology, all kinds of electronic products are developing towards the trend of high speed, high performance, thinness and shortness. Under this trend, the portable pico projector (or mini projector) has gradually become the future personal digital the mainstream of the market. Generally, light emitting diodes (LEDs) or other solid-...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G03B21/00H02J9/06
CPCG03B21/00
Inventor 蔡明伦简文章
Owner CORETRONIC
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