Patent ID: 6876365
Filing Date: 2005-04-05
Classification: G09G

Abstract:
1. A signal processing circuit for processing an input digital video data and producing display data for a display unit divided into a plurality of regions to be driven, comprising: a data separation portion for performing assignment of said input digital video data; and a plurality of memory portions for storing the digital data which is digital video data assigned by said data separation portion; each of said memory portions including an input-side line memory having a data storage capacity equal to or greater than the number of pixels of said display unit in a horizontal direction divided by the number of said regions to be driven and sequentially receiving and storing said digital data, and an output-side line memory for holding the serial data stored in said input-side line memory and transferred in parallel from said input-side line memory and having a plurality of output portions capable of serially outputting the data held therein from prescribed positions different from each other; wherein selection is made among said plurality of output portions of said output-side line memory in accordance with the number of pixels of said display unit in a horizontal direction, and serial output data is supplied from the selected output portion in each of said plurality of memory portions to said display unit as analog display data; each of the plurality of output portions of the output-side line memory has a plurality of memory units and is configured as a shift register; each of the shift registers has an output memory unit and data stored in the shift register is shifted and serially output from the output memory unit; and the output memory units define the prescribed positions different from each other.