News Column

Patent Application Titled "Electronic Device and Power Control Method Thereof" Published Online

May 22, 2014



By a News Reporter-Staff News Editor at Politics & Government Week -- According to news reporting originating from Washington, D.C., by VerticalNews journalists, a patent application by the inventors Chen, Shih-Jie (Taipei, TW); Chang, Sean-Hau (Taipei, TW), filed on February 26, 2013, was made available online on May 8, 2014.

The assignee for this patent application is Inventec Corporation.

Reporters obtained the following quote from the background information supplied by the inventors: "The disclosure relates to a power control method, and more particularly to an electronic device with a graphics processing unit and a power control method thereof.

"Central processing unit (CPU) is a major tool of an electronic device with computer system configured for performing and computing algorithm. In order to meet the ever-growing video processing requirements, in addition to the central processing unit, most display cards disposed on the motherboard is also equipped with an independent graphics processing unit (GPU) and display memory. Thereby, video data processing speed is enhanced.

"The structure of graphics processing unit is commonly divided into two types, namely discrete GPU and unified memory architecture (UMA) GPU. For discrete GPU, the video data output interface such as display port (DP), video graphics array (VGA) interface, and low-voltage differential signaling (LVDS) interface, high definition multimedia interface (HDMI) or digital visual interface (DVI) is disposed on a same chip together with the graphics processing unit.

"However, as the graphical function of graphics processing unit enhances, the amount of electricity required by the operations of graphics processing unit and the above-mentioned output interfaces also increases substantially. Furthermore, a quantity of connectors of some high-end graphics processing units connected to the power has to increase, so as to obtain a larger amount of electricity for operation. Therefore, conventional graphics processing unit is usually uneconomic in terms of power consumption. Furthermore, since the quantity of graphics processing unit connectors is increased, the cost for manufacturing the graphics processing unit by manufacturers rises accordingly."

In addition to obtaining background information on this patent application, VerticalNews editors also obtained the inventors' summary information for this patent application: "The disclosure provides an electronic device comprising a central processing unit and a graphics processing unit. The graphics processing unit is coupled to the central processing unit. The graphics processing unit comprising a plurality of output interfaces. A power is supplied to the graphics processing unit and the output interfaces through the coupling between the output interfaces and an expanded device. Under the condition that the output interfaces are not coupled to the expanded device, the power is stopped supplying to the graphics processing unit and the output interfaces when the electronic device is under a first power supply mode. The power is supplied to the graphics processing unit and is stopped supplying to the output interfaces when the electronic device is under a second power supply mode, under the condition that the output interfaces are not coupled to the expanded device.

"Moreover, a power control method configured for an electronic device is provided. The electronic device comprises a central processing unit and a graphics processing unit. In the power control method, a power is supplied to the graphics processing unit and the output interfaces respectively, under the condition that the output interfaces of the graphics processing unit are coupled to an expanded device. The power is stopped supplying to the graphics processing unit and the output interfaces respectively when the electronic device is under a first power supply mode, under the condition that the output interfaces are not coupled to the expanded device. The power is supplied to the graphics processing unit and stopping supplying the power to the output interfaces when the electronic device is under a second power supply mode, under the condition that the output interfaces are not coupled to the expanded device.

BRIEF DESCRIPTION OF THE DRAWINGS

"The disclosure will become more fully understood from the detailed description given herein below for illustration only, and thus does not limit the disclosure, wherein:

"FIG. 1 is a block diagram of an electronic device according to a first embodiment of the disclosure;

"FIG. 2 is a flow chart of a power control method according to the first embodiment of the disclosure;

"FIG. 3 is a block diagram of the electronic device according to a second embodiment of the disclosure; and

"FIG. 4 is a flow chart of the power control method according to the second embodiment of the disclosure."

For more information, see this patent application: Chen, Shih-Jie; Chang, Sean-Hau. Electronic Device and Power Control Method Thereof. Filed February 26, 2013 and posted May 8, 2014. Patent URL: http://appft.uspto.gov/netacgi/nph-Parser?Sect1=PTO2&Sect2=HITOFF&u=%2Fnetahtml%2FPTO%2Fsearch-adv.html&r=4992&p=100&f=G&l=50&d=PG01&S1=20140501.PD.&OS=PD/20140501&RS=PD/20140501

Keywords for this news article include: Inventec Corporation.

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Source: Politics & Government Week


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