Patents by Inventor Ludwig A. Perret

Ludwig A. Perret 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).

  • Patent number: 4185305
    Abstract: Methods and apparatus for recording and subsequently reproducing video signals including video and synchronization information initially record the video signals and first control information distinct from said video and synchronization information on a recording medium. The video signals are subsequently reproduced with the aid of second control information being distinct from said video and synchronization information for controlling the reproduction of the video signals from the recording medium. The mentioned first control information is rendered incapable as recorded of controlling the reproduction of the video signals upon reproduction of the first control information, and the second control information is provided by reproducing the recorded first control information from the recording medium and converting at least part of the reproduced first control information to the second control information.
    Type: Grant
    Filed: July 18, 1975
    Date of Patent: January 22, 1980
    Assignee: Bell & Howell Company
    Inventors: Ludwig A. Perret, James A. Miller
  • Patent number: 4030128
    Abstract: There is disclosed a method of scrambling a video information recording of a type having video information and a video information playback control signal recorded on a recording medium, with the playback control signal being normally in that type of recording recorded in a first track positioned on the recording medium for playback by a specifically positioned playback device in a standard video information playback apparatus. According to the disclosed scrambling method, the video information is recorded on the recording medium, and the video information playback control signal is recorded on the recording medium in a second track different from the mentioned first track.
    Type: Grant
    Filed: November 21, 1974
    Date of Patent: June 14, 1977
    Assignee: Bell & Howell Company
    Inventor: Ludwig A. Perret
  • Patent number: 3972045
    Abstract: Apparatus for transporting and entertaining passengers comprise an aircraft, a rotary supporting structure, equipment connected to the aircraft and to the rotary supporting structure for mounting the rotary supporting structure in the aircraft, a set of antenna elements constituting a directional television antenna on the rotary supporting structure for receiving transmitted television signals, equipment for selectively changing the orientation of the directional television antenna, including equipment coupled to the supporting structure for selectively rotating the supporting structure, and equipment connected to the directional television antenna for processing and displaying the received television signals inside the aircraft.In an aircraft, there is provided a structural member on the outside of the aircraft of a material permeable to transmitted television signals. A container of electrically insulating material is located inside the aircraft and adjacent the permeable structural member.
    Type: Grant
    Filed: May 20, 1974
    Date of Patent: July 27, 1976
    Assignee: Bell & Howell Company
    Inventor: Ludwig A. Perret