Patents by Inventor Kunio Iwaibana

Kunio Iwaibana 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).

  • Magnetic recording and reproducing apparatus obtaining separate clock signals from brightness and color components of a video signal
    Patent number: 5200834
    Abstract: A digital video tape recorder. A clock is extracted from the horizontal sync signal within the luminance signal, and used in processing the luminance portion of the video signal. A clock is also extracted from a color burst within the chrominance signal and is used for processing the chrominance portion. The chrominance portion of the video signal to be recorded is converted to a low frequency band before recording. During playback, the reverse of this operation is performed, thereby producing a signal with the original color frequency.
    Type: Grant
    Filed: March 30, 1989
    Date of Patent: April 6, 1993
    Assignees: NEC Home Electronics Ltd., NEC Corporation
    Inventors: Kunio Iwaibana, Takeshi Kuwajima
  • Imaging device with hand wobble display circuit
    Patent number: 4862277
    Abstract: An imaging device such as a video camera having a viewfinder for displaying an imaging signal to the photographer which indicates the degree of hand wobble (i.e., movement of the camera by the photographer). A hand wobble display circuit generates this imaging signal for the viewfinder by generating a field-difference or a frame-difference signal of the electronic viewfinder signal and displaying the difference signal on the viewfinder. The magnitude of the difference signal can be used to determine the degree of hand wobble.
    Type: Grant
    Filed: September 29, 1988
    Date of Patent: August 29, 1989
    Assignee: NEC Home Electronics Ltd.
    Inventor: Kunio Iwaibana