公开(公告)号：US20070091621A1

公开(公告)日：2007-04-26

申请号：US11163639

申请日：2005-10-26

申请人： Wen-Chih Tai ,  Shih-Tsung Yang ,  Chia-Lin Liu ,  Chi-Neng Mo

发明人： Wen-Chih Tai ,  Shih-Tsung Yang ,  Chia-Lin Liu ,  Chi-Neng Mo

IPC分类号： F21V29/00

CPC分类号： F21V25/10 ,  F21V29/60 ,  H04N9/3144

摘要： A projection display includes a housing, a display panel, a power plug for electrically connecting to an external power source and receiving power provided by the external power source, a light source electrically connected to the power plug for emitting light onto the display panel when receiving power from the power plug, a heat-ventilating device for ventilating heat generated by the light source to a region outside of the housing, a power storage device for storing power, and a power detector electrically connected to the heat-ventilating device, the power storage device, and the power plug for selectively electrically connecting the heat-ventilating device either to the power plug or to the power storage device.

摘要翻译： 投影显示器包括壳体，显示面板，用于电连接到外部电源并且接收由外部电源提供的电力的电源插头，电源连接到电源插头的光源，用于当接收时将光发射到显示面板上 来自电源插头的电源，用于将由光源产生的热量通向壳体外部的区域的热通风装置，用于存储电力的蓄电装置以及与热交换装置电连接的功率检测器， 存储装置和用于选择性地将热通风装置电连接到电源插头或电力存储装置的电源插头。

公开(公告)号：US20050046506A1

公开(公告)日：2005-03-03

申请号：US10964837

申请日：2004-10-13

申请人： Shih-Tsung Yang ,  Jonathon Cheah ,  Ee Kwek ,  Chun-Yip Lau

发明人： Shih-Tsung Yang ,  Jonathon Cheah ,  Ee Kwek ,  Chun-Yip Lau

IPC分类号： H03L7/089 ,  H03L7/099 ,  H03L7/189 ,  H03L7/00

CPC分类号： H03L7/099 ,  H03J2200/10 ,  H03L7/0898 ,  H03L7/189

摘要： A method and apparatus for tuning a VCO circuit to provide desired modulations is described. In one embodiment, the method of the present invention uses a controlled voltage from a digital-to-analog converter to obtain VCO voltage/frequency characteristics. The VCO voltage/frequency characteristics are used to determine a VCO capacitance value as well as a charge pump current level for each frequency band of interest. For one embodiment, the VCO circuit includes a bank of switchable capacitors used to set the VCO capacitance value. The charge pump includes a number of switch-controlled current meters to set the charge pump current level. The VCO capacitors and charge pump current meters are controlled by an off-chip CPU.

摘要翻译： 描述了一种用于调谐VCO电路以提供所需调制的方法和装置。 在一个实施例中，本发明的方法使用来自数模转换器的受控电压来获得VCO电压/频率特性。 VCO电压/频率特性用于确定VCO电容值以及感兴趣的每个频带的电荷泵电流电平。 对于一个实施例，VCO电路包括用于设置VCO电容值的一组可切换电容器。 电荷泵包括多个开关控制的电流表，用于设置电荷泵电流水平。 VCO电容和电荷泵电流表由片外CPU控制。