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Hu, DE
Ji Hu, Karlsruhe DE
| Patent application number | Description | Published |
|---|---|---|
| 20090241166 | Establishment of Security Federations - Secure interactions between administrative domains are modeled. The modeled process specifies role information for each of the administrative domains and interaction between the administrative domains. Role information associated with candidate administrative domains is received, and appropriate administrative domains from the candidate administrative domains are dynamically resolved based on the modeled process and the received role information. Trust realms between the dynamically resolved appropriate administrative domains are automatically derived based on the role information and the interactions from the modeled process. The secure interaction between the dynamically resolved appropriate administrative domains is effected through the automatically derived trust realms. | 09-24-2009 |
Jing Hu, Stuttgart DE
| Patent application number | Description | Published |
|---|---|---|
| 20100119829 | METHOD FOR PRODUCING SURFACE-MODIFIED NANOPARTICULATE METAL OXIDES, METAL HYDROXIDES, AND/OR METAL OXIDE HYDROXIDES - The present invention relates to methods of producing surface-modified nanoparticulate particles at least of one metal oxide, metal hydroxide and/or metal oxide hydroxide, and aqueous suspensions of these particles. Furthermore, the invention relates to the surface-modified nanoparticulate particles, obtainable by these methods, at least of one metal oxide, metal hydroxide and/or metal oxide hydroxide and aqueous suspensions of these particles, and to their use for cosmetic sunscreen preparations, as stabilizer in plastics and as antimicrobial active ingredient. | 05-13-2010 |
Jing Hu, Neubiberg DE
| Patent application number | Description | Published |
|---|---|---|
| 20080278225 | METHOD AND APPARATUS FOR REGULATING POWER IN A FLYBACK CONVERTER - An integrated circuit includes an operational amplifier configured to receive a current sense voltage (V | 11-13-2008 |
| 20090231895 | RECTIFIER CIRCUIT - Disclosed is a method for operating a transistor as a rectifier element, and a circuit arrangement including a control circuit and a transistor. | 09-17-2009 |
| 20090268494 | Synchronous Rectifier Control Circuit and Method - Circuit and method for controlling a synchronous rectifier. A circuit for monitoring the drain to source voltage of an SR transistor in a secondary side circuit of a voltage converter is disclosed, having a circuit for generating a gate control circuit for the SR MOSFET; the circuit preventing subsequent gate control signals until a primary turn on detection signal is received. In another embodiment a circuit for generating the primary turn on detection signal is provided. A method for controlling an SR transistor is disclosed comprising monitoring the drain to source voltage of the SR MOSFET, generating a gate control output, and preventing subsequent gate control output signals until a primary turn on detection signal is received. In another method embodiment a method for generating the primary turn on detection signal is disclosed. An SR embodiment incorporating the control circuit embodiments is disclosed. | 10-29-2009 |
| 20090316441 | Synchronous Rectifier Control Circuit and Method - In accordance with an embodiment of the present invention, a method of operating a switched power supply is disclosed. The method comprises determining a current load on a secondary side of a transformer by measuring a ratio between a secondary side current conduction time and a primary switching period of the power supply and comparing the current load with a predetermined threshold. A synchronous rectification (SR) MOSFET coupled to the secondary side of the transformer is disabled if the current load is less than the preset threshold. | 12-24-2009 |
Shike Hu, Reutlingen DE
| Patent application number | Description | Published |
|---|---|---|
| 20090241924 | Circuit configuration for switching current flow through an ignition coil - A circuit configuration for switching current flow through an ignition coil, in which the switching process is able to be executed by at least one first transistor that is controllable by a control signal which is able to be supplied via a control signal input of the circuit configuration, and the control signal input is connected to at least one variable resistor. | 10-01-2009 |
Xuelei Hu, Erlangen DE
| Patent application number | Description | Published |
|---|---|---|
| 20090052643 | VOICE CONFERENCE APPARATUS, VOICE CONFERENCE SYSTEM AND METHOD FOR REALIZING A VOICE CONFERENCE - A voice conference apparatus consists of at least one base conference block having three or more signal ports, each including an input for a digitalized voice signal and an output for a digitalized voice signal, wherein a base conference block is configured such that, at a signal port, optionally a terminal or another base conference block may be coupled up using a coupler for the realization of a voice conference apparatus extended with respect to the number of participants or in terms of space, and wherein a base conference block is configured to enable a voice conference among the terminals or base conference blocks coupled thereto, and a remote coupler configured to couple a base conference block with at least one other spatially remote base conference block in order to enable a spatially extended voice conference. A voice conference system may be composed of at least two spatially separate voice conference apparatuses and is structured in a decentralized and modular way and is flexibly extensible. | 02-26-2009 |
Yong-Sheng Hu, Stuttgart DE
| Patent application number | Description | Published |
|---|---|---|
| 20090269667 | Porous Electrically Conductive Carbon Material And Uses Thereof - This disclosure relates to a porous electrically conductive carbon material having interconnected pores in first and second size ranges from 10 μm to 100 nm and from less than 100 nm to 3 nm and a graphene structure and to diverse uses of the material such as an electrode in a lithium-ion battery and a catalyst support, e.g. for the oxidation of methanol in a fuel cell. The carbon material has been heat treated to effect conversion to non-graphitic carbon with the required degree of order at a temperature in the range from 600° C. to 1000° C. A lithium-ion battery and an electrode for a lithium-ion battery are also claimed. | 10-29-2009 |
| 20100008021 | Porous Carbon Electrode With Conductive Polymer Coating - An extremely high-performance polyaniline electrode was prepared by potentiostatic deposition of aniline on hierarchically porous carbon monolith (HPCM), which was carbonized from mesophase pitch. A capacitance value of 2200 F g | 01-14-2010 |
| 20100210453 | Preparation Of Nanostructured Metals And Metal Compounds And Their Uses - A method for the preparation of materials comprises the steps of: a) taking a first material comprising a compound of a first metal or of a first metal alloy, b) inserting said first material into an electrochemical cell as a first electrode, the electrochemical cell including a second electrode including a second metal different from a metal incorporated in the first material and an electrolyte adapted to transport the second metal to the first electrode and insert it into the first material by a current flowing in an external circuit resulting in the formation of a compound of the second metal in the first electrode material, the method being characterized by the step of treating the first electrode material after formation of the compound of the second metal to chemically remove at least some of the compound of the second metal to leave a material with a nanoporous structure. | 08-19-2010 |