Patent ID: 8284309
Filing Date: 2012-10-09
Classification: H04N

Abstract:
1. A method for displaying a caption window, applied to a television (TV) system comprising a system memory and a TV controller comprising a microcontroller, and an offset register coupled to and directly controlled by a graphic output processor, the method comprising: receiving a first window-defining command comprising a first window size and first caption content; generating a first completed caption data which is larger than the first window size according to the first whole caption content and storing the first completed caption data into the system memory; accessing and displaying a first portion of the first caption data in the system memory according to a first offset stored in the offset register and the first window size; and updating, using the graphic output processor, the first offset stored in the offset register to a second offset after a predetermined period, and accessing and displaying a second portion of the first caption data according to the second offset and the first window size.