NEC

About: NEC is a company organization based out in Tokyo, Japan. It is known for research contribution in the topics: Signal & Layer (electronics). The organization has 33269 authors who have published 57670 publications receiving 835952 citations. The organization is also known as: NEC Corporation & NEC Electronics Corporation.

Integrated electronic information system

Abstract: An electronic system using collectors, rosters, notifiers, and links provides a uniform system for communications, information management and human organization. Since the collectors have unique addresses, each collector belonging to a user can be used as a separate email inbox to provide a single user account with multiple email inboxes. Furthermore, collectors can have access control attributes to limit access to the collectors. The notifier provides a uniform location to view incoming new messages and documents. The links can be used to automatically transfer information between collectors as well as providing access authorization to collectors. For example, a link in subscription mode from a first collector to a second collector would automatically copy all documents placed in the second collector to the first collector. Similarly, if the same link were in forwarding mode, documents placed in the first collector are copied to the second collector. Rosters contain links to multiple collectors. A link to a roster is equivalent to a link to all the collectors linked in the roster. In addition sending a document to a roster is equivalent to sending a copy of the document to every collector linked in the roster.

Structure and method for controlling a host computer using a remote hand-held interface device

Abstract: A mobile interface device receiving input from a stylus is provided to remotely control application programs running on a host computer. Such an interface device provides convenient access to any resource of the host computer, including, for example, a sharable database. An embodiment of such an interface device includes a pen-based graphical interface which communicates with an operating system on the host computer. In that embodiment, the operating system on the host computer has handwriting recognition capability.

Multimedia processors

Abstract: This paper describes large-scale-integration programmable processors designed for multimedia processing such as real-time compression and decompression of audio and video as well as the generation of computer graphics. As the target of these processors is to handle audio and video in real time, the processing capability must be increased tenfold compared to that of conventional microprocessors, which were designed to handle mainly texts, figures, tables, and photographs. To clarify the advantages of a high-speed multimedia processing capability, we define these chips as multimedia processors. General-purpose microprocessors for workstations and personal computers (PCs) use special built-in hardware for multimedia processing, so the multimedia processors described include these modified general-purpose microprocessors. After reviewing the history of programmable processors, we classify multimedia processors into five categories depending on their basic architecture. The categories are reduced instruction set computer (RISC) microprocessors for workstations, complex instruction set computer microprocessors for PCs, embedded RISCs, low-power digital signal processors (DSPs), which are mainly used for mobile communications devices, and media processors that support PCs for multimedia applications. These five classes are then grouped into two: microprocessors with a multimedia instruction set and highly parallel DSPs. An architectural comparison between these two groups on the basis of Moving Picture Experts Group decoding applications is made, and the advantages and disadvantages of each class are clarified. Future processors, including "system on a chip," and their applications are also discussed.

Semiconductor device and manufacturing method thereof

Abstract: PROBLEM TO BE SOLVED: To provide a semiconductor device having a high-breakdown-voltage field effect transistor by alleviating an electric field concentration between a drain region and a gate electrode. SOLUTION: The semiconductor device 100 has, on a silicon substrate 110, an N well source region 170 and an N well drain region 160 formed apart from each other, and a gate electrode 130 provided while a gate insulating film 131 formed from above the N well source region 170 toward on the N well drain region 160 is interposed therebetween. Furthermore, a LOCOS oxide film 180a is formed on the surface of the silicon substrate 110 in the N well drain region 160, and the LOCOS oxide film 180a has a constricted portion in a sectional view and the gate electrode 130 is formed straddling the constricted portion. COPYRIGHT: (C)2009,JPO&INPIT

Output‐buffer switch architecture for asynchronous transfer mode

Abstract: This paper proposes a new asynchronous transfer mode (ATM) switch architecture for the broadband ISDN. The ATOM switch ATM output-buffer modular switch has a multi-stage network structure, and is highly modular to facilitate capacity expansion. The ATOM switch element is of the output-buffer type with a time-division multiplexed bus and FIFO buffer for each outgoing line. Bit-slice techniques are used to implement the high-speed time-division bus and buffer memories. The output buffer switch has the advantages of no throughput degradation since internal contention is eliminated, and a simple control structure for providing priority and multi-point connections. This paper also deals with switching delay and buffer overflow probabilities for mixed (bursty and non-bursty) traffic.