Bit rate reduction algorithm for a digital VCR
S.I. Kim, Y.C. Park, D.H. Youn, W.K. Kim, Byung Kyu Yoo · IEEE Transactions on Consumer Electronics · 1991
The authors describe a bit rate reduction algorithm for use in digital VCRs, based on block scrambling and the two-dimensional adaptive discrete cosine transform. This method satisfies many of the demands unique to digital VCRs. Before the encoding process, the input image is divided into 8*8 pixel blocks and then scrambled on a block-by-block basis to achieve efficient bit distribution in a frame and to simplify buffer control strategy. In addition to block scrambling, a simple yet efficient variable length coding method is proposed. Simulation results are presented.>