Other

International Business Machines Corporation

General Electric Company

Ustream, Inc.

Gabor Farkas

Gyula A Feher

Gabor Nyerges

Zsolt Biro

Mohamed Rahmane

James Anthony Brewer

Agoston Boroczki

Steven Charles Aceto

Sergiy Zalyubovskiy

A bidirectional connection between a multimedia stream distribution system and a user is used to communicate operational data to and from the user. The bidirectional connection is separate from a multimedia connection that transfers a multimedia stream from the multimedia stream distribution system to the user. Providing a bidirectional connection separate from the multimedia connection is advantageous, among other reasons, because the operational data can be collected effectively at the multimedia stream distribution system independent of any limitations in the multimedia connection. To organize users and reduce processing load, the multimedia stream distribution system assigns users to user groups based on shared characteristics. Groups may be used to propagate information to the users as well as analyze information collected from the users in an efficient manner.

Bidirectional communication on live multimedia broadcasts

The invention is a control method and a control device for determining components of a control voltage of an inverter adapted for feeding power to a grid, in the course of which a vector direction (&#x3b8;*) of a voltage of the grid is determined, on the basis of active power and reactive power of the grid, current reference signal components (i, i) are determined, Park vector components (i, i) are generated by Park transformation from components (i, i, i) associated with phases of a current of the inverter, the current reference signal components (i, i) are transformed into the transformed current reference signal components (i, i) on the basis of the vector direction (&#x3b8;*), a first error signal is generated by leading the first component (i) of the Park vector and the first component (i) of the transformed current reference signal to a first subtracting unit (), and a second error signal is generated by leading the second component (i) of the Park vector and the second component (i) of the transformed current reference signal to a second subtracting unit (), the error signals are guided through control blocks each comprising three parallel signal paths () and outputting summed up outputs of the signal paths (), and the components (u, u, u) of the control voltage are determined on the basis of outputs (u, u) of the control blocks by inverse Park transformation. The invention is, furthermore, a mobile electric power storage apparatus comprising the control device.

Control method, control device and mobile electric power storage apparatus

A metal halide discharge lamp comprises a lamp body and a chamber formed within the body. A pair of electrodes extends into the chamber and have electrode tips spaced apart from one another. A discharge medium composition is sealed within the chamber that generates a plasma, which generates visible light. The composition comprises a rare gas, a first metal halide that produces a luminous flux and zinc iodide that generates a desired lamp operating voltage. The composition may also comprise zinc, sealed in the chamber, in elemental form that is not derived from the first metal halide or the zinc iodide. The zinc iodide halide serves as a substitute for mercury for purposes of generating desired lamp operating voltage; and, the excess pure zinc attracts or reacts with iodine atoms thereby making available electrons and the first metal halide for generation of a luminous flux.

Mercury-free metal halide discharge lamp

Growing community of inventors

Budapest, Hungary

Gabor Farkas