SOC, Bus, NIC and NOC.

Presentation on theme: "SOC, Bus, NIC and NOC."— Presentation transcript:

1 SOC, Bus, NIC and NOC

2 Block기반 영상 압축 How to compress an MB? An Image Frame Bitstream overhead

3 DCT (Discrete Cosine Transform)
공간영역 데이터를 주파수 영역 데이터로 변환. (프리즘의 원리) DCT 변환 결과값을 상수(양자화 스텝)로 나누어 반올림(양자화).

4 Transform (=DCT) Size MPEG2/4 : 8*8 floating number DCT
H.264 : 4*4 integer DCT H.265 : 32x32 DCT, 16x16 DCT, 8x8 DCT and 4x4 DST

5 TQS Flow

6 TQS

7 H.264 인코더 블럭도

8 DCTQS Flow

9 DCTQS Effect

10 Quiz Why IDCT and IQ exist? Let’s do a cartoon drawing using an Avata, one based on drawer’s image the other one based on Avata’s image. Do Intra Prediction and Inter Prediction reduce data size?

11 What is the key problem in SOC?

12 DRAM Bandwidth

13 H.264 디코더 블럭도

14 H.264 디코더 외부 메모리 I/F

15 AHB Interface

16 AMBA Stands for Advanced Microcontroller Bus Architecture
Developed by ARM in 1990s (England) ARM also developed ARM RISC series for SOC applications. ARM is now the mostly widely used RISC core and that makes AMBA most popular BUS in SOC world.

17 Key AMBA Version AMBA 2.0 : AHB, APB, ASB AMBA 3.0 : AXI

18 AHB vs AXI AHB AXI

19 NOC (Network On a Chip)