1
Manfred Zollner, Christian Hoffmann, Eberhard Zwicker: Method for the electrical stimulation of the auditory nerve and multichannel hearing prosthesis for carrying out the method. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, January 31, 1984: US04428377 (84 worldwide citation)

In the exemplary embodiments, the sound signals are converted into electrical signals, which are wirelessly transmitted to an implanted receiver, and from the latter, electric stimuli in electrode channels are brought to act on the auditory nerve. The transmission proceeds in the time division multi ...


2
Christian Hoffmann, Manfred Zollner, Eberhard Zwicker: Method and apparatus for generating electrocutaneous stimulation patterns for the transmission of acoustic information. Siemens Aktiengesellschaft, Hill Van Santen Steadman Chiara & Simpson, June 28, 1983: US04390756 (35 worldwide citation)

In an exemplary embodiment, the point of departure is that of a substitute signal system for deaf individuals which codes acoustical signals, in particular speech sound, into electrocutaneous stimulation patterns. Current pulse patterns serve as substitute signals which, via skin surface electrodes, ...


3
Manfred Zollner, Christian Hoffmann, Eberhard Zwicker: Method for generating acoustical speech signals which can be understood by persons extremely hard of hearing and a device for the implementation of said method. Siemens Aktiengesellschaft, Hill Van Santen Steadman & Simpson, September 6, 1983: US04403118 (24 worldwide citation)

In the illustrated embodiments, the signals to be transmitted are converted into electrical signals and are divided by means of filters into a plurality of frequency bands. The envelopes of the signals coming out of the filters are then employed for the modulation of tones. Finally, the original ton ...


4
Manfred Zollner, Christian Hoffmann, Eberhard Zwicker: Method for generating acoustical voice signals for persons extremely hard of hearing and a device for implementing this method. Siemens Aktiengesellschaft, Hill Van Santen Steadman Chiara & Simpson, September 15, 1981: US04289935 (23 worldwide citation)

In an exemplary embodiment, the signals to be transmitted are converted into electric signals and resolved into a multiplicity of frequency bands by means of filters. The signals coming from the filters are then employed for the modulation of tone signals. Finally, original tones are supplied to the ...


5
Volkmar Uhlendorf, Christian Hoffmann, Thomas Fritzsch: Ultrasonic processes and circuits for carrying out those processes. Schering Aktiengesellschaft, Millen White Zelano & Branigan P C, October 21, 1997: US05678553 (22 worldwide citation)

A process for selective graphic representation and/or evaluation of the Doppler spectrum of objects limitedly resistant to sonic intensity, for example biological organs and tissues, by an ultrasonic process wherein a material is introduced in the examination area to be acoustically irradiated, nonl ...


6
Christian Hoffmann, J├╝rgen Portmann, Hans Krueger: Encapsulated component which is small in terms of height and method for producing the same. Epcos, Schiff Hardin, January 3, 2006: US06982380 (21 worldwide citation)

For simpler and safer encapsulation of components, it is proposed to generate the connection between a chip and a carrier substrate by means of bump connections that are sunk into recesses on the carrier substrate. The component thereby lies directly on the carrier substrate, in particular on a fram ...


7
Christian Hoffmann, Hellmut Freudenberg, Hartmut Gerken, Martin Hecker, Richard Pirkl: Device and method for driving at least one capacitive actuator. Siemens Aktiengesellschaft, Herbert L Lerner, Laurence A Greenberg, January 18, 2000: US06016040 (19 worldwide citation)

A device for driving at least one capacitive actuator contains a charge capacitor C1 and a discharge capacitor C2. According to the method, the actuator is charged with a desired voltage U.sub.s by the capacitors C1+C2 connected in series, and is then discharged into the discharge capacitor C2. The ...


8
Christian Hoffmann, Wendelin Klugl, Andreas Hartke: Device and method for regulating the fuel pressure in a high-pressure accumulator. Siemens Aktiengesellschaft, Herbert L Lerner, Laurence A Greenberg, August 24, 1999: US05941214 (16 worldwide citation)

A device and a method are provided for regulating the fuel pressure in a high-pressure accumulator. A volumetric flow regulation and a pressure regulation combine the advantages of regulation of volumetric flow and regulation of pressure with one another and thus achieve increased dynamics and highe ...


9
Christian Hoffmann, Hellmut Freudenberg, Manfred Weigl, Hartmut Gerken, Martin Hecker, Richard Pirkl: Method of driving at least one capacitive actuator. Siemens Aktiengesellschaft, Herbert L Lerner, Laurence A Greenberg, Werner H Stemer, October 17, 2000: US06133714 (16 worldwide citation)

A method of driving at least one capacitive actuator with a charge voltage. From a charge quantity .DELTA.Q supplied to the actuator and from the actuator voltage U.sub.p applied to the actuator after the charging operation is terminated, the actuator capacitance is calculated by the equation C.sub. ...


10
Christian Hoffmann: Method for determining three-dimensional surface coordinates. Siemens Aktiengesellschaft, Young & Thompson, November 2, 2004: US06813035 (15 worldwide citation)

The formation of a two-dimensional color pattern (9) consisting of colored pattern elements (10) enables a particularly compact and faultproof color pattern for a coding to be provided. The aim of the invention is to determine the projection angle PHI for a pattern element in the picture record of t ...