Patents by Inventor Isaac Ferstenberg

Isaac Ferstenberg has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Self-amplified loudspeakers with switching amplifier technology
    Patent number: 7702120
    Abstract: The present invention utilizes switching power amplifier technology to improve the performance of self-amplified speaker system. In contrast to analog Class A and Class AB amplifiers, the present invention utilizes a digital class D amplifier. Class D amplifiers are a pulse width modulated or digital switching amplifier configuration. The Class D amplifiers of the present invention includes 2-pole compensation feedback and power supply tracking that improves stability and total harmonic distortion over conventional power amplifiers. Class D amplifiers have an average electrical efficiency value of at least 65%. This level of electrical efficiency leads to reduction in the amount of power lost in the device or systems that result in heat generation.
    Type: Grant
    Filed: January 17, 2006
    Date of Patent: April 20, 2010
    Assignee: Bogen Communications, Inc.
    Inventor: Isaac Ferstenberg
  • Backslope regulator system
    Patent number: 6388906
    Abstract: A regulator system includes a circuit regulating the output of a power supply such as a capacitive input filter power supply and preferably also a transformer and full-wave diode bridge.
    Type: Grant
    Filed: April 20, 2001
    Date of Patent: May 14, 2002
    Assignee: Bogen Communications, Inc.
    Inventor: Isaac Ferstenberg
  • Self-amplified loudspeaker
    Patent number: D531164
    Type: Grant
    Filed: April 29, 2005
    Date of Patent: October 31, 2006
    Assignee: Bogen Communications, Inc.
    Inventors: Isaac Ferstenberg, Thomas A. Nelson, Berta Grushko