Digital data driver and display device using the same

Details Digital data driver and display device using the same Digital data driver and display device using the same

2007-06-19

2007-06-19

JeanPierre, Peguy (Department: 2819)

Coded data generation or conversion

Analog to or from digital conversion

Digital to analog conversion

C345S087000

Reexamination Certificate

active

11403341

ABSTRACT:
A digital data driver including a receiving unit and a digital-to-analog (D/A) converting unit is provided. The D/A converting unit is used to convert N digital data outputted from the receiving unit into corresponding N analog data. The D/A converting unit includes a grey-level voltage generator and K sub D/A converting units. The grey-level voltage generator provides 2Mgrey-level voltages. The ithsub D/A converting unit includes 2Mbuffers andNK⁢D/Aconverters. In which, each buffer receives and outputs a corresponding grey-level voltage. The jthD/A converter receives the[(i-1)×NK+j]thdigital data, and selects and outputs one of the grey-level voltages that passed the buffers as the[(i-1)×NK+j]thanalog data according to the[(i-1)×NK+j]thdigital data, where N, K,NK,i and j are the positive integers,1≤i≤K⁢⁢and⁢⁢1≤j≤NK.

REFERENCES:
patent: 5627537 (1997-05-01), Quinlan et al.
patent: 6744415 (2004-06-01), Waterman et al.
patent: 2004/0196244 (2004-10-01), Lin
patent: 2006/0114205 (2006-06-01), Shen et al.

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