Patents Assigned to Studer Revox AG
  • Method and apparatus for converting scanning values of an input scanning sequence
    Patent number: 5285401
    Abstract: A method and apparatus for generating a further scanning frequency from an input scanning frequency and an output scanning frequency which is located very close to an input scanning frequency or output scanning frequency. A further scanning frequency is derived from the input scanning frequency and the output scanning frequency. Scanning values of an input scanning sequence are converted by a first conversion into scanning values of a further scanning sequence with a further scanning frequency. The scanning values of the further scanning sequence are converted into scanning values of an output scanning sequence. An adaptation on one of the two conversions of the scanning frequencies is then performed and a scanning rate conversion with a predetermined ratio is performed on the other of the two conversions.
    Type: Grant
    Filed: December 10, 1992
    Date of Patent: February 8, 1994
    Assignee: Studer Revox Ag
    Inventor: Daniele Pelloni
  • Amplifier unit
    Patent number: 5181251
    Abstract: In order to obtain for electrodynamic loudspeakers, on the one hand, the energy-favorable acoustical enhancement by the bass reflex principle and, on the other hand, to be able to use the motional control of the diaphragm of the electrodynamic loudspeaker by controlling such by means of an amplifier exhibiting negative output impedance, it is proposed to compensate the thus resulting unfavorable frequency characteristic by a forwardly connected circuit which generates an inverse characteristic with respect to the unfavorable frequency characteristic.
    Type: Grant
    Filed: September 25, 1991
    Date of Patent: January 19, 1993
    Assignee: Studer Revox AG
    Inventors: Roger Schultheiss, Paul Zwicky
  • Electrodynamic loudspeaker
    Patent number: 5129005
    Abstract: In a loudspeaker with a number of speaker units, each connected across one power amplifier to a diplexer, the power amplifiers having negative source impedance (-R.sub.1) are utilized. The diplexer includes an adder circuit and a filter connected thereto. The power amplifiers with negative source impedance reduce the linear distortions to such an extent that the use of modern diplexers is possible and further measures for reducing nonlinear distortions are appropriate.
    Type: Grant
    Filed: July 14, 1989
    Date of Patent: July 7, 1992
    Assignee: Studer Revox AG
    Inventors: Paul Zwicky, Roger Schultheiss
  • Process for the acquisition of measured values on the human and animal body
    Patent number: 5101833
    Abstract: In order that in those processes in which vectors (2, 3) and vector loops (1) are determined from the measured values and which e.g. represent the heart function, is possible to better determine changes on loops brought about by changes in the heart, it is proposed that a vector product (4) should be determined from vectors determined at successive times and that the path of such vector products should be followed over a period.
    Type: Grant
    Filed: January 18, 1991
    Date of Patent: April 7, 1992
    Assignee: Studer Revox AG
    Inventor: Johann J. Schmid
  • High fidelity audio-visual reproducing system
    Patent number: D347837
    Type: Grant
    Filed: September 17, 1991
    Date of Patent: June 14, 1994
    Assignee: Studer Revox AG
    Inventor: Thomas Gerlach