Electronic device having path of power supplied to display part switched according to whether external power is supplied

一种电子设备、显示部分的技术，应用在电子设备领域，能够解决难以实现等问题

Inactive Publication Date: 2006-10-18
SAMSUNG ELECTRONICS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, making the DC / DC converter 122b and the inverter 114 have a conversion efficiency greater than 95% is difficult to achieve

Method used

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  • Electronic device having path of power supplied to display part switched according to whether external power is supplied
  • Electronic device having path of power supplied to display part switched according to whether external power is supplied
  • Electronic device having path of power supplied to display part switched according to whether external power is supplied

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no. 1 example

[0038] Here, the battery 11 comprises at least one battery element specifying the voltage level of the first power as its rechargeable and output power. As a first embodiment according to the invention, the battery 11 may comprise three battery elements.

[0039] The maximum voltage level of power output from each battery element is 3.7V, and the cutoff voltage of each battery element is, for example, 3V. Therefore, the voltage level of the first power output from the battery 11 including three battery elements is 9V to 11.1V.

[0040] The adapter 10 may include an AC / DC adapter that converts commercial alternating current used in homes and the like into direct current. Alternatively, the adapter 10 may include a DC / DC adapter that uses direct current like a cigar jack for vehicles as input power. The electronic device according to the first embodiment of the present invention receives external power from the adapter 10, and the voltage level of the external power supplied b...

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PUM

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Abstract

An electronic device operable from one of an external power supply and a battery. The electronic device includes a display part, a power converter, an inverter generating an operating voltage for the display part, a system part generating information to be displayed on the display part and operable from an output of the power converter, a battery, an input power detector, and a switching controller. The switching controller controls power to the inverter so that where the input power detector detects availability of an external power, the switching controller supplies the external power to the power converter and the power converter supplies power to the inverter to generate the operating voltage for the display part; and where the input power detector detects the external power is not available, the switching system supplies battery power to the power converter and the inverter independently.

Description

[0001] Cross Reference Related Applications [0002] This application claims the benefit of Korean Patent Application No. 2005-31626 filed with the Korean Intellectual Property Office on April 15, 2005, which is hereby incorporated by reference. technical field [0003] The present invention relates to electronic devices, and more particularly to electronic devices that switch the path of power supplied to a display depending on whether an external power switch is provided. Background technique [0004] Electronic devices employing batteries have become widely used, enabling portability and mobility. Such electronic devices include portable computers such as laptop computers, notebook computers, personal digital assistants (PDAs); mobile phones; CD (compact disc) players; camcorders, and the like. Generally, these electronic devices are equipped with a connection terminal for connecting an adapter to use external power through an AC / DC (alternating current / direct current) a...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/00H02J7/34H02J9/04H05B37/00H05B41/00
CPCH02J9/062F26B3/02F26B21/02F26B2200/22F26B2200/16
Inventor 车载德
Owner SAMSUNG ELECTRONICS CO LTD
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