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Motion compensation is always the main bottleneck in real-time or high quality video applications; thus, fast and efficient motion compensation is necessary. In this paper, a new motion compensation design is presented to overcome large calculation time of complicated motion vector prediction (MVP) algorithm and high motion resolution in H.264/AVC. By(More)
A memory-efficient architecture design for de-blocking filter in H.264/AVC is presented. We use the novel data arrangement of Column-of-Pixel to facilitate the memory access and reuse the pixel value. Further, we propose a hybrid filter scheduling to improve the system throughput. As compared with some existing approaches of realizing de-blocking filter [1](More)
A single-chip MPEG-2 SP@ML and H.264/AVC BL@L4 video decoder is fabricated in a 0.18μm 1P6M CMOS technology with an area of 15.21mm. This chip contains 19.2kb and 3.55kb of embedded SRAM for storing neighboring pixels and control tags, and adopts two 4MB SDRAMs for further system integration. It operates at a power-level that is about one order of magnitude(More)
In this paper, memory access could be saved in inter and intra prediction by adopting the proposed memory-efficient decoding ordering. In the proposed hierarchical syntax parser, gated clock technique could be effectively applied to reduce power. Simulation shows the proposed design consumes 88mW in real time decoding 1080HD video sequence.
In this paper, we propose a 4x4-block level pipelining architecture with instantaneous switching scheme and optimal decoding ordering of H.264/AVC decoder. Compared with conventional H.264/AVC video decoders [1][2], which adopt macroblock level pipelines, our proposed 4x4-block level pipelining architecture of H.264/AVC decoder achieves better hardware(More)
We consider the decision engine of mobile cloud offloading systems, which decides whether to offload a given method to the cloud servers. We design, implement, and evaluate a context-aware decision algorithm, called CADA, to optimize the performance of the mobile devices with various optimization criteria, including short response time and low energy(More)
In this paper, we propose several new channel predictive equalizers designed for ETSI DVB-T systems. In conventional DVB-T equalizer designs, the storage of 3 symbols is needed in order to do interpolation of CFR in time axis. This huge amount of storage can be eliminated in our proposed predictive equalizers. We present 3 kinds of predictive equalizers to(More)
Today's mobile Internet is heavily overloaded by the increasing demand and capability of mobile devices, in particular, multimedia traffic. However, not all traffic is created equal, and a large portion of multimedia contents on the mobile Internet is delay tolerant. We study the problem of capitalizing the content transfer opportunities under better(More)
A low power H.264/AVC video decoder LSI for mobile applications is presented. Video decoding of quartercommon intermediate format (QCIF) sequence at 30 frames per second is achieved at 1.2MHz clock frequency and requires about 865μW at 1.8-V supply voltage. Moreover, CIF, SD and HD sequence format are also supported. The decoder architecture is based on 4x4(More)