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Reversible data hiding has attracted more and more attention in recent years. With reversible data hiding, it requires embedding secret data into original image with devised algorithm at the encoder, and marked image can then be delivered to the decoder. At the decoder, both the secret data and original image should be perfectly separated from marked image to keep the reversibility. There are several...
A first-reported 4K×2K@60fps digital TV SoC processor supporting 9 video formats and integrating HDMI/MHL receiver is fabricated in a 40nm CMOS process. It adopts error compensation processor (ECP) to improve the visual quality, and designs a memory management unit and resource sharing technique to improve the throughput and area efficiency by 38.5% and 34.3%, respectively. Moreover, a lossless compression...
In this paper, we propose an adaptive receiver for efficient intercarrier interference (ICI) cancellation in orthogonal frequency division multiplexing (OFDM) systems using two-path conjugate transmission. This receiver design is based on the phase rotated conjugate cancellation (PRCC) concept presented recently, where two individual phase rotations are employed on the two receive paths, rather than...
Source authentication is necessary in many multicast applications, especially in the real-time applications such as stream-video and online-news. In these applications, we should assure that all the packets received are from the same legal source and this can be done efficiently. In this paper, we propose an efficient scheme to decrease both communication cost and computation cost of source authentication...
In this paper, we first investigate two efficient inter-carrier interference (ICI) self-cancellation schemes for orthogonal frequency division multiplexing (OFDM) systems, conjugate cancellation (CC) and phase-rotated conjugate cancellation (PRCC), by examining their system structures and performances. Then, we propose an adaptive receiver design based on conjugate transmission for ICI self-cancellation...
In practical applications, an official document may be involved in several subjects or departments, and it usually needs to be reviewed by different levels of participant managers in a linearly hierarchical organization. Each reviewer would give some comments for those documents and sends them to the next reviewer for the further review. In an organization, the order of reviewers depends on the hierarchical...
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