公开(公告)号：US08436804B2

公开(公告)日：2013-05-07

申请号：US12186540

申请日：2008-08-06

申请人： Wei-Lun Liu ,  Huang-Ping Lu ,  Jheng-Bin Huang ,  Hsin-Hui Shih ,  Wen-Chin Wu ,  Chia-Hsien Li

发明人： Wei-Lun Liu ,  Huang-Ping Lu ,  Jheng-Bin Huang ,  Hsin-Hui Shih ,  Wen-Chin Wu ,  Chia-Hsien Li

IPC分类号： G09G3/36

CPC分类号： G09G5/10 ,  G06F1/3228 ,  G06F1/3231 ,  G06F1/3246 ,  G06F1/3265 ,  G09G3/3406 ,  G09G2320/0626 ,  G09G2330/022 ,  G09G2354/00 ,  H04N1/00885 ,  H04N1/00891 ,  H04N1/00896 ,  H04N1/00904 ,  H04N2201/0089 ,  Y02D10/153 ,  Y02D10/173

摘要： A digital photo frame having power saving functions includes a display panel, a power generation unit for switching a system power according to a power control signal, a user detection unit installed on the display panel for detecting whether a user exists within a specific range to generate a user detection signal, a central processing unit for adjusting backlight intensity of the display panel when the system power is provided by the power generation unit according to the user detection signal and for generating a power switch-off signal when the backlight intensity of the display panel is turned off according to the user detection signal, and a power control unit for generating the power control signal to switch off the system power when the backlight intensity of the display panel is adjusted to be switched off according to the power switch-off signal.

摘要翻译： 具有省电功能的数码相框包括显示面板，用于根据功率控制信号切换系统电源的发电单元，安装在显示面板上的用户检测单元，用于检测用户是否存在于特定范围内以产生 用户检测信号，中央处理单元，用于当所述发电单元根据所述用户检测信号提供所述系统功率时调整所述显示面板的背光强度，并且当所述显示器的背光强度为所述显示器时产生电源切断信号 面板根据用户检测信号关闭;以及电源控制单元，用于当根据电源关闭信号调节显示面板的背光强度以关闭时，产生电源控制信号以切断系统电源 。

公开(公告)号：US20090160541A1

公开(公告)日：2009-06-25

申请号：US12186540

申请日：2008-08-06

申请人： Wei-Lun Liu ,  Huang-Ping Lu ,  Jheng-Bin Huang ,  Hsin-Hui Shih ,  Wen-Chin Wu ,  Chia-Hsien Li

发明人： Wei-Lun Liu ,  Huang-Ping Lu ,  Jheng-Bin Huang ,  Hsin-Hui Shih ,  Wen-Chin Wu ,  Chia-Hsien Li

IPC分类号： G05F1/10

CPC分类号： G09G5/10 ,  G06F1/3228 ,  G06F1/3231 ,  G06F1/3246 ,  G06F1/3265 ,  G09G3/3406 ,  G09G2320/0626 ,  G09G2330/022 ,  G09G2354/00 ,  H04N1/00885 ,  H04N1/00891 ,  H04N1/00896 ,  H04N1/00904 ,  H04N2201/0089 ,  Y02D10/153 ,  Y02D10/173

摘要： A digital photo frame having power saving functions includes a display panel, a power generation unit for switching a system power according to a power control signal, a user detection unit installed on the display panel for detecting whether a user exists within a specific range to generate a user detection signal, a central processing unit for adjusting backlight intensity of the display panel when the system power is provided by the power generation unit according to the user detection signal and for generating a power switch-off signal when the backlight intensity of the display panel is turned off according to the user detection signal, and a power control unit for generating the power control signal to switch off the system power when the backlight intensity of the display panel is adjusted to be switched off according to the power switch-off signal.

摘要翻译： 具有省电功能的数码相框包括显示面板，用于根据功率控制信号切换系统电源的发电单元，安装在显示面板上的用户检测单元，用于检测用户是否存在于特定范围内以产生 用户检测信号，中央处理单元，用于当所述发电单元根据所述用户检测信号提供所述系统功率时调整所述显示面板的背光强度，并且当所述显示器的背光强度为所述显示器时产生电源切断信号 面板根据用户检测信号关闭;以及电源控制单元，用于当根据电源关闭信号调节显示面板的背光强度以关闭时，产生电源控制信号以切断系统电源 。

公开(公告)号：US20130223646A1

公开(公告)日：2013-08-29

申请号：US13441911

申请日：2012-04-08

申请人： Chuan-Fu Lee ,  Fa-Yu Hsieh ,  Wei-Lun Liu

发明人： Chuan-Fu Lee ,  Fa-Yu Hsieh ,  Wei-Lun Liu

IPC分类号： H04B15/00 ,  H03F99/00

CPC分类号： H04R3/02

摘要： A speaker control method includes steps of detecting whether there is any audio signal input; outputting a first voltage signal if there is no audio signal input; outputting a second voltage signal if there is an audio signal input; and selectively turning off an audio amplifier according to the first voltage signal or turning on the audio amplifier according to the second voltage signal, wherein the audio amplifier is used for driving a speaker.

摘要翻译： 扬声器控制方法包括以下步骤：检测是否存在任何音频信号输入; 如果没有音频信号输入，则输出第一电压信号; 如果存在音频信号输入则输出第二电压信号; 以及根据所述第一电压信号选择性地关闭音频放大器，或者根据所述第二电压信号接通所述音频放大器，其中所述音频放大器用于驱动扬声器。