State-of-the-Art Communication Technologies for the Internet Society in the Broadband Era Toward the Realization of a Ubiquitous Network Society MASAKI Toshio Trends in New Communication Technologies over IP Communication Platform SHIRAKAWA Masakazu The Internet Protocol (IP), which was developed as a protocol for communication between computers, has recently come to be regarded as a key for realizing a high-speed, low-cost network that is applicable not only to voice and data but also multimedia communication. The revolution related to IP technologies seems to be never-ending, and even public telecommunication network operators, which place emphasis on overall network quality design, are now giving serious consideration to such technologies as an essential factor in the next-generation communication infrastructure. Efforts will be made to expand IP addresses and increase the reliability of the communication network in order to realize the application of IP technologies to various spheres including home electronic appliances. VoIP System -- IP Telephony System over IP Network Based on SIP Technology MACHIDA Atsushi / MORI Toshiki / OCHIAI Tamiya The advent of a new era of information technology has led to the realization of a sophisticated communication technology called Voice over Internet Protocol (VoIP) with voice packet servers. This application using VoIP technology is expected to allow the implementation of cost-effective computer-related systems. Toshiba has been developing a scalable VoIP system for enterprise networks with the Avaya server system. This system will adopt the Session Initiation Protocol (SIP), and will permit a reliable and flexible network to be actualized by a redundant server system. Wireless LAN Access Points with Sophisticated Functions SUZUKI Koichi / WATANABE Hiroyuki / OCHIAI Tamiya Wireless LAN was initially considered to have the disadvantage of increased risk of tapping and hacking compared to a hard-wired network due to the use of radio frequency technology. However, corporations have rapidly started to adopt wireless LANs as a result of the development of enhanced security. In order to further expand their application in the corporate environment, the implementation of sophisticated functions is desired. To meet this requirement, Toshiba has developed new wireless LAN access points that can accommodate networks with different segments. These access points effectively transmit data including real-time voice and video data. IP-Based Exchange System for Telecommunication Network Operators SUZUKI Muneyuki / NAGASHIMA Hiroaki / YAMAMOTO Keiji / WATANABE Nobuaki The rapid advance of IP (Internet Protocol) technologies is inducing both fixed and mobile network operators to reestablish their infrastructures using IP networks. Personal handyphone system (PHS) network operators are also requesting their own networks free from existing frameworks, to accept soaring demand for high-speed data communication. We have codeveloped an IP-based exchange system jointly with a network operator. This system realizes voice and data communication over IP networks without using the integrated services digital network (ISDN). The main hardware components are designed redundantly to provide high reliability, and the system enables centralized supervision and control. Further enhancement and refinement of the system will be continued. Content Delivery System Using DVD Recorders KURIHARA Shinichi / UNNO Hiroaki / ITOH Hiroaki The increasing diffusion of broadband Internet connections is making online video content distribution more practical. In order to start a full-fledged online video content distribution service, robust protection of contents, a cost-effective and scalable distribution server system, and low-cost and access-friendly terminal recorders are required. To meet these requirements, Toshiba has developed the DVD over IPTM system, a content delivery system using DVD recorders that utilizes content protection for recordable media (CPRM) and has two totally different servers for key control and content distribution. Conventional RD-X4 DVD recorders were remodeled for the terminal recorders after improving their functionality by upgrading the software. We have now started a trial service. Fully IP-Based Video Surveillance System YAMAGUCHI Shuichi Video surveillance systems covering a wider area are required in order to save labor and improve the collection of surveillance information. Due to the recent spread of Internet Protocol (IP) technology as an infrastructure, such a wide-area system can be realized more easily by an IP-based video surveillance system. Toshiba has developed a video surveillance system that provides high-quality IP-based video transmission using MPEG-2 encoding and multicast communication of video information. An application framework has also been developed for this system that is more flexible and easier to configure and manage, thus saving setting time. Network Digital Video Recorders TORIUMI Yoshitsugu / NITANAI Yasuyuki / YAMAGUCHI Tohru The importance of image surveillance security systems has recently been rapidly increasing. Using surveillance camera images, various crimes and incidents are solved more frequently. Not only are the images useful as evidence, but the crime prevention effect of such systems is beginning to be clearly recognized as well. Information leaks and accidents are also becoming a major risk affecting both the corporate world and society as a whole. The image surveillance security market continues to expand due to these reasons, with image recording equipment incorporating increasingly advanced features through digitization. Demand is also arising for the application of such equipment to remote surveillance of unmanned areas and to operating support systems via a network. This paper introduces the trends in the image surveillance security market and solutions provided Toshiba's network digital video recorders, which are a key component of an image surveillance security system. |