发明名称 |
Load-aware compensation in light-emitting-diode backlight illumination systems |
摘要 |
System(s) and method(s) are provided for power management in an electronic display via compensation of a power source of a light-emitting-diode (LED) backlighting system. A compensation feedback loop includes a load-aware controller that receives the load condition from a dimming controller and supplies a control signal to the power source. An efficiency regulator functionally connected the backlight circuitry closes the compensation feedback loop and provides an input signal to the load-aware controller. The dimming controller implements phase-shifted pulse-modulation dimming, which based on duty cycle can establish a dimming equilibrium with two load conditions. The load aware controller includes a set of compensation blocks arranged in parallel, with a single compensation block connected to the input signal and that provides the control signal. A selector component in the load aware controller determines a compensation block to be connected to the compensation feedback loop based on the received load condition.
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申请公布号 |
US8581828(B2) |
申请公布日期 |
2013.11.12 |
申请号 |
US20100772067 |
申请日期 |
2010.04.30 |
申请人 |
YANG ZHIYU;VI KIEN;S DILIP;DHAYAGUDE TUSHAR;ATMEL CORPORATION |
发明人 |
YANG ZHIYU;VI KIEN;S DILIP;DHAYAGUDE TUSHAR |
分类号 |
G09G3/36 |
主分类号 |
G09G3/36 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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