Abstract: The real time scrolling subtitle detecting device and method which includes a subtitle decoding unit to decode a subtitle stream for obtaining a first compressed subtitle data and a second compressed subtitle data and generating a first subtitle data and a second subtitle data corresponding to the first and the second compressed subtitle respectively, a receiving unit to receive the first compressed subtitle data and the second one of the subtitle decoding unit, and a detecting module to detect and obtain an offset of the first compressed subtitle data and the second one to determine a subtitle scrolling information of the second subtitle data.

Abstract: A video decoding device and method for an inverse quantization and zigzag scan, which includes a receive unit having a counter for receiving at least one pixel and accumulating a counter value as an index of the pixel, and a process unit for retrieving a quantization parameter and a storing address of the pixel according to the index and further for obtaining an inverse quantization value of the pixel and the storing address of the inverse quantization value.

Abstract: A scrolling subtitle detecting device and method, which the device includes a receiving unit receiving a subtitle size data, a first subtitle data and a second subtitle data; and a detecting module detecting the first subtitle data and the second subtitle data to obtain a difference according to the subtitle size data for judging a scrolling information of the second subtitle data. Accordingly, the scrolling subtitle detecting device and method may eliminate serration at the edge of the subtitle while the subtitle having scrolling and scaling effects simultaneously, but also excite the viewer's joy of the sight and improve the quality of the playing subtitle.