公开(公告)号：US09468051B1

公开(公告)日：2016-10-11

申请号：US14837422

申请日：2015-08-27

Applicant: NATIONAL YUNLIN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Chun-Wei Lin ,  Jia-Si Lee

IPC: H05B33/08

CPC classification number: H05B33/0815 ,  H05B33/0812 ,  H05B33/0824 ,  H05B33/0854

Abstract: A light emitting diode (LED) linear light modulator with temperature compensation includes a comparing module, a timing processing module, an LED module and a temperature compensating current control module. The comparing module compares an analog input signal with a triangular wave sampling signal to generate a pulse width modulation (PWM) signal. The PWM signal is inputted into the timing processing module and converted to a digital signal. The temperature compensating current control module, electrically connected to the LED module and the timing processing module, includes a plurality of low-temperature correlated linear current units and a switching switch, and controls a current amount passing through the LED module to generate a low-temperature correlated linear current. Thus, the color temperature of an LED is prevented from drifting with a change in the ambient temperature.

Abstract translation: 具有温度补偿的发光二极管（LED）线性光调制器包括比较模块，定时处理模块，LED模块和温度补偿电流控制模块。 比较模块将模拟输入信号与三角波采样信号进行比较，以产生脉宽调制（PWM）信号。 PWM信号被输入到定时处理模块并转换成数字信号。 电连接到LED模块和定时处理模块的温度补偿电流控制模块包括多个低温相关线性电流单元和开关开关​​，并且控制通过LED模块的电流量， 温度相关线性电流。 因此，防止LED的色温随着环境温度的变化而漂移。

公开(公告)号：US09397643B1

公开(公告)日：2016-07-19

申请号：US14837310

申请日：2015-08-27

Applicant: NATIONAL YUNLIN UNIVERSITY OF SCIENCE AND TECHNOLOGY

Inventor： Chun-Wei Lin ,  Bao-Yuan Zeng

IPC: H03K4/06 ,  H03K4/90 ,  H03K3/013

CPC classification number: H03K4/90 ,  H03K3/013 ,  H03K4/06

Abstract: A linear triangular wave generator with stray effect compensation includes a linear triangular wave generating module, a negative impedance converting module, an impedance sensing module and a switch module. The linear triangular wave generator charges/discharges a physical capacitor by a first current source to generate a triangular wave signal, and generates a stray component due to a stray effect. The negative impedance converting module is electrically connected to the linear triangular wave generating module, and includes a negative matching impedance. The switching module is electrically connected to the negative impedance converting module and the impedance sensing module to allow the impedance sensing module to sense an impedance value of the negative matching impedance, so as to calibrate the negative matching impedance and compensate the stray effect to further generate a linear triangular wave signal.

Abstract translation: 具有杂散效应补偿的线性三角波发生器包括线性三角波产生模块，负阻抗转换模块，阻抗感测模块和开关模块。 线性三角波发生器通过第一电流源对物理电容器进行充电/放电以产生三角波信号，并由于杂散效应而产生杂散分量。 负阻抗转换模块电连接到线性三角波发生模块，并且包括负匹配阻抗。 开关模块电气连接到负阻抗转换模块和阻抗感测模块，以允许阻抗感测模块感测负匹配阻抗的阻抗值，以便校准负匹配阻抗并补偿杂散效应以进一步产生 线性三角波信号。