A Design of Efficient Scan Converter for Image Compression CODEC
영상압축코덱을 위한 효율적인 스캔변환기 설계

Gunjoong Lee, Kwangki Ryoo
2015 The Journal of the Korean Institute of Information and Communication Engineering  
Data in a image compression codec are processed with a specific regular block size. The processing order of block sized data is changed in specific function blocks and the data is packed in memory and read by a new sequence. To maintain a regular throughput rate, double buffering is normally used that interleaving two block sized memory to do concurrent read and write operations. Single buffering using only one block sized memory can be adopted to the simple data reordering, but when a
more » ... but when a complicate reordering occurs, irregular address changes prohibit from implementing adequate address generating for single buffering. This paper shows that there is a predictable and recurring regularity of changing address access orders within a finite updating counts and suggests an effective method to implement. The data reordering function using suggested idea is designed with HDL and implemented with TSMC 0.18 CMOS process library. In various scan blocks, it shows more than 40% size reduction compared with a conventional method. 키워드 : 영상코덱, 스캔, JPEG, MPEG, HEVC
doi:10.6109/jkiice.2015.19.2.386 fatcat:swezl2ln4rhshh4vgkytmjc3rq