Patent ID: 7233272

Claim:
A digital data driver, comprising: a receiving unit for receiving at least one digital data stream and converting the received digital data stream into N digital data, wherein each of the digital data is M bits, and M and N are the positive integers; and a digital-to-analog (D/A) converting unit for receiving the digital data, and converting the received digital data into corresponding N analog data, wherein the D/A converting unit comprises: a grey-level voltage generator for providing 2 M grey-level voltages; and K sub D/A converting units, wherein the i th sub D/A converting unit comprises: 2 M buffers, wherein each of the buffers receives and outputs corresponding one of the grey-level voltages; and N K ⁢ D / A converters, wherein the j th D/A converter receives the [ ( i - 1 ) × N K + j ] th digital data, and selects and outputs one of the grey-level voltages that passed the buffers as the [ ( i - 1 ) × N K + j ] th analog data according to the [ ( i - 1 ) × N K + j ] th digital data, where K, N K , i and j are the positive integers, 1 ≦ i ≦ K ⁢ ⁢ and ⁢ ⁢ 1 ≦ j ≦ N K .