Invention Grant
- Patent Title: Reference voltage generators for use in display applications
- Patent Title (中): 用于显示应用的参考电压发生器
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Application No.: US13019558Application Date: 2011-02-02
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Publication No.: US08384650B2Publication Date: 2013-02-26
- Inventor: Chor Yin Chia
- Applicant: Chor Yin Chia
- Applicant Address: US CA Milpitas
- Assignee: Intersil Americas Inc.
- Current Assignee: Intersil Americas Inc.
- Current Assignee Address: US CA Milpitas
- Agency: Vierra Magen Marcus & DeNiro LLP
- Main IPC: G09G3/36
- IPC: G09G3/36

Abstract:
A multi-reference voltage generator includes an interface controller, a first bank of N m-bit registers and a second bank of N m-bit registers. A first multiplexer has inputs connected to outputs of the first and second bank of registers. An m-bit digital-to-analog (DAC) has an m-bit parallel input connected to an output of the first multiplexer. An analog demultiplexer has an input connected to an analog output of the m-bit DAC. Each voltage storage device in a first group of N voltage storage devices is connected to a corresponding output of the analog demultiplexer. Similarly, each voltage storage device in a second group of N voltage storage devices is connected to a corresponding output of the analog demultiplexer. N further multiplexers each have a first input connected to an output of a corresponding one of the voltage storage devices in the first group and a second input connected to an output of a corresponding one of the voltage storage devices in the second group. N output buffers, each have an input connected to an output of a corresponding one of the N further multiplexers, and an output useful for driving a column driver.
Public/Granted literature
- US20110122056A1 REFERENCE VOLTAGE GENERATORS FOR USE IN DISPLAY APPLICATIONS Public/Granted day:2011-05-26
Information query
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