The patent's assignee for patent number 8654113 is
News editors obtained the following quote from the background information supplied by the inventors: "FIG. 1 shows a block diagram of a display circuit in a conventional display monitor. A display circuit 100 comprises a power circuit 110, a scaler 120 and a backlight module 130. The power circuit 110 converts an AC power 112 into voltage signals 114 and 116, which are provided to the backlight module 130 and the scaler 120, respectively. The display circuit 100 may be applied to computer monitors, analog televisions or digital televisions. Inspired by the global trend of carbon reduction, manufacturers of the technology industry are dedicated to saving power consumption under the standby mode by AC/DC conversion using the power circuit 110 of the prior art.
"Therefore, there is a need for an ultra-low-power display control circuit and associated method that can be realized with low cost."
As a supplement to the background information on this patent, VerticalNews correspondents also obtained the inventors' summary information for this patent: "The present invention provides an ultra-low-power display control circuit. The ultra-low-power display control circuit comprises a power conversion controller, a first capacitor, a transforming device, a second capacitor, a regulator, an opto-coupler and a display controller. The first capacitor couples to the transforming device and the power conversion controller. The transforming device, including a transformer and a diode, coupled to the power conversion controller, converts a relatively-high voltage to a relatively-low voltage. The second capacitor, coupled to the transforming device, stabilizes the relatively-low voltage. The regulator, coupled to the second capacitor, regulates the relatively-low voltage to generate a regulated voltage output. The display controller, coupled to the regulator, is powered by the regulated voltage output for operations. The opto-coupler is coupled between the display controller and the power conversion controller. The display controller controls the magnitude of a coupling current of the opto-coupler, so that the opto-coupler feedback controls a pin of the power conversion controller to activate or deactivate the power conversion controller.
"The invention further provides an ultra-low-power display control method. The method comprises steps of detecting the level of a DC voltage and controlling the magnitude of a coupling current of an opto-coupler by a display controller through a GPIO pin to deactivate a power conversion controller. The display controller increases the coupling current of the opto-coupler by asserting a signal of a GPIO pin or by grounding the GPIO pin of the opto-coupler. The display controller controls the magnitude of the coupling current of the opto-coupler to activate the power conversion controller. Thus, a first capacitor and a second capacitor are charged, such as charging till reaching a predetermined level or charging for a predetermined time period."
For additional information on this patent, see: Lin, Song-Yi; Hung, Guo-Kiang. Ultra-Low-Power Display Control Circuit and Associated Method. U.S. Patent Number 8654113, filed
Keywords for this news article include: Electronics,
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