Source driver and digital-to-analog converter thereof

Details Source driver and digital-to-analog converter thereof Source driver and digital-to-analog converter thereof

2007-10-19

2009-10-06

Mai, Lam T (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C345S089000, C348S254000

Reexamination Certificate

active

07598894

ABSTRACT:
A source driver and a digital-to-analog converter (DAC) thereof are provided. The DAC converts an input data into an analog voltage. The DAC includes a reference voltage generation unit, a switch unit, and a selection unit. The reference voltage generation unit provides a plurality of voltage levels. The switch unit is coupled to the reference voltage generation unit and determines whether to output the voltage levels, wherein the switch unit is turned off during a data conversion period of the input data. The selection unit is coupled to the reference voltage generation unit via the switch unit, and the selection unit selects one of the voltage levels output by the switch unit according to the input data, wherein the selected voltage level is served as the analog voltage output by the DAC.

REFERENCES:
patent: 5808571 (1998-09-01), Kuwata et al.
patent: 6181314 (2001-01-01), Nakajima et al.
patent: 6310593 (2001-10-01), Nakao
patent: 6424281 (2002-07-01), Liaw et al.
patent: 6437720 (2002-08-01), Yin et al.
patent: 6590516 (2003-07-01), Inagaki et al.
patent: 6747626 (2004-06-01), Chiang
patent: 7253664 (2007-08-01), Yeh
patent: 7268711 (2007-09-01), Hofer

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