Video coding is used under the hood of a lot of multimedia applications such as video conferencing, digital storage media, television broadcasting, and internet streaming. However, offering universal access to video content is far from trivial when taking into account the diversity of current networks and terminals. In this paper, we will discuss how MPEG-21-based technology can be combined wit...

The Common Scrambling Algorithm (CSA) is used to encrypt streams of video data in the Digital Video Broadcasting (DVB) system. The algorithm uses a combination of a stream and a block cipher, apparently for a larger security margin. However these two algorithms share a common key. In this paper we present a fault attack on the block cipher which can be launched without regarding the stream ciph...

Existing secureembeddedsystemsareprimarily cryptographybased.However, for effectiveDigital Rights Management (DRM)ofmultimedia in the frameworkof embedded systems, bothwatermarking and cryptography are necessary. In this paper, a watermarking algorithm and corresponding VLSI architectures are presented thatwill insert a broadcaster’s logo into video streams in real-time to facilitate copyrighte...

The new subtitling system will be established along with the digital television broadcasting. The system uses MPEG-2 multiplexing and region-based bitmap graphics (with indexed pixel colors) technologies to transmit subtitle data to set-top box. It provides more interactivity than the existing analogue television although interactivity is limited. This paper gives a description of Digital Video...

The low-cost in-home distribution of full-standard digital TV jointly with high-bitrate data using 50 m long 1 mm core diameter graded-index plastic optical fiber (GI-POF) is proposed and experimentally demonstrated. Discrete multitone (DMT) modulation is demonstrated to provide an adaptive bitrate which can spectrally coexist with digital video broadcasting-terrestrial (DVB-T) signals in 470-8...