Mitsubishi Electric

About: Mitsubishi Electric is a company organization based out in Ratingen, Germany. It is known for research contribution in the topics: Signal & Voltage. The organization has 23024 authors who have published 27591 publications receiving 255671 citations. The organization is also known as: Mitsubishi Electric Corporation & Mitsubishi Denki K.K..

Polarization modulation of terahertz electromagnetic radiation by four-contact photoconductive antenna

Abstract: Generation and modulation of circularly polarized terahertz electromagnetic radiation have been demonstrated by using a four-contact photoconductive antenna and a total-reflection Si prism. The quality of the circularly polarized terahertz pulsed radiation has been evaluated by using a polarization sensitive terahertz time-domain spectroscopy system. The characteristic of the dynamic modulation between the left and right circularly polarized states of the THz radiation is also evaluated. The ellipticity of the modulated circularly polarized THz radiation without a polarizer is not as good as that of the non-modulated because of the non-uniform bias field distribution and the asymmetric pump laser intensity profile on the photoconductive gap.

Integer low-density lattices based on construction A

Abstract: We describe a new family of integer lattices built from construction A and non-binary LDPC codes. An iterative message-passing algorithm suitable for decoding in high dimensions is proposed. This family of lattices, referred to as LDA lattices, follows the recent transition of Euclidean codes from their classical theory to their modern approach as announced by the pioneering work of Loeliger (1997), Erez, Litsyn, and Zamir (2004–2005). Besides their excellent performance near the capacity limit, LDA lattice construction is conceptually simpler than previously proposed lattices based on multiple nested binary codes and LDA decoding is less complex than real-valued message passing.

Induction cooking device

Abstract: Disclosed is an induction cooking device which is provided with a center coil wound in a planar shape, a plurality of peripheral coils positioned on the periphery of the center coil, a plurality of power supply circuits for supplying high-frequency current independently to the center coil and each of the peripheral coils, a detection means for detecting the state of placement when the item to be heated is placed above the center coil and each peripheral coil, and a drive controller for controlling the power supply circuits so that the high-frequency current is selectively supplied to the center coil and each peripheral coil in accordance with the state of placement of the item to be heated which is detected by the detection means. This induction cooking device can suppress the generation of unneeded magnetic flux, which does not contribute to heating, and provide very efficient heating in response to the state of placement of a pot (different size or shape of the pot, and the positional offset of the pot in place) above each coil by using the center coil and the plurality of peripheral coils.

Video transcoding using syntactic and semantic clues

Abstract: A method for transcoding a compressed video partitions the compressed video into hierarchical levels, and extracts features from each of the hierarchical levels. One of a number of conversion modes of a transcoder is selected dependent on the features extracted from the hierarchical levels. The compressed video is then transcoded according to the selected conversion mode.

A digital audio broadcasting (DAB) receiver

Abstract: This paper describes the features and functions of the newly developed Eureka-147 DAB (digital audio broadcasting) receiver. In this paper, we also describe an AFC (automatic frequency control) and a synchronization technique using a DSP (digital signal processor).