BDC-1: A robust algorithm for display stream compression

Abstract

BDC-1 is a low-complexity algorithm to compress digital video in real time in a visually lossless way for transmission over display links. The algorithm is based on DPCM, with a number of improvements. The decoder infers prediction modes and quantization levels based on previously received data. The entropy coding facilitates decoding at 3 pixels per clock at low cost. The decoded image quality is superior to many state-of-theart low-cost compression schemes, particularly on pathologically difficult and computer-generated content.

27.4L: Late‐News Paper: VESA Display Stream Compression: An Overview

“…The requirements for DSC 1.0 are based on a comprehensive assessment of anticipated applications [2]. DisplayPort TM , MIPI ® Display Serial Interface (DSI), and other links were reviewed to determine the compressed data rates needed to support current and future display formats.…”

“…DSC is based on the BDC-1 compression algorithm described in [2]. A block diagram of the DSC encoding process is provided in Figure 1.…”