Reference voltage generator for use in display applications

Details Reference voltage generator for use in display applications Reference voltage generator for use in display applications

2007-03-20

2007-03-20

Nguyen, Linh (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C341S142000, C341S147000

Reexamination Certificate

active

11207480

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 sample-and-hold circuit in a first group of N sample-and-hold (S/H) circuits is connected to a corresponding output of the analog demultiplexer. Similarly, each S/H circuit in a second group of N S/H circuits 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 S/H circuits in the first group and a second input connected to an output of a corresponding one of the S/H circuits 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.

REFERENCES:
patent: 5844532 (1998-12-01), Silverbrook et al.
patent: 6154121 (2000-11-01), Cairns et al.
patent: 6353224 (2002-03-01), Sinclair et al.
patent: 6437716 (2002-08-01), Nakao
patent: 6593934 (2003-07-01), Liaw et al.
patent: 6781532 (2004-08-01), Wei
patent: 6801178 (2004-10-01), Nitta et al.
patent: 6836232 (2004-12-01), Bu
patent: 6879310 (2005-04-01), Nose
patent: 6897800 (2005-05-01), Chia
patent: 6950045 (2005-09-01), Kim
patent: 6961015 (2005-11-01), Kernahan et al.
patent: 2004/0263540 (2004-12-01), Ooishi et al.
“Temperature Compensating Gamma Trimster ATT3209,” Alta Analog, Inc. (2004), http://www.alta-analog.com/Speciications/ATT3209.pdf.
“Gamma Trimster AGT1809,” Alta Analog, Inc. (2004), http://www.alta-analog.com/Speciications/AGT1809.pdf.
Harrison, et al., “A CMOS Programmable Analog Memory Cell Array Using Floating-Gate Circuits,” IEEE Transactions on Circuits and Systems, vol. 48(1); pp. 4-11, (Feb. 2001), http://www.ece.utah.edu/˜harrison/papers/TCASII2001.pdf.
“Temperature Compensating Gamma Trimster ATT3209,” Alta Analog, Inc. (2004), http://www.alta-analog.com/Speciications/ATT3209.pdf, no month.
“Gamma Trimster AGT1809,” Alta Analog, Inc. (2004), http://www.alta-analog.com/Speciications/AGT1809.pdf, no month.
“Analog Devices: 10-Channel Gamma Buffer with Vcom Driver,”ADD8710, Analog Devices, Inc.(2004), http://www.analog.com/UploadedFiles/Data—Sheets/136071332ADD8710—a.pdf, no month.

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