Patent ID: 6961460

Claim:
A digital picture signal processing apparatus, comprising: receiving means for receiving a captured picture signal; picture processing means for processing the received picture signal; mode designating means for generating a signal that designates the processing of the received picture signal into a first mode or a second mode; determining means for determining whether the received picture signal is a natural image or a text image, wherein the first mode is designated when the received picture signal is determined to be the natural image, and the second mode is designated when the received picture signal is determined to be the text image; and digitizing means for digitizing the received picture signal, wherein when the first mode is designated, said digitizing means is configured to use 256 gray scales or 512 gray scales, and wherein when the second mode is designated, said digitizing means is configured to use two grayscales, and wherein enabling dynamic configuration of said digitizing means according to the result of said determining means allows substantially improved performance for said digital picture signal processing apparatus.