Patents by Inventor John D. Proper

John D. Proper 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).

  • VCR backup system
    Patent number: 4530048
    Abstract: The present invention is a video casette recorder (hereinafter referred to as "VCR") backup controller that can be installed in a S-100 bus system which is compatible with NTSC, PAL and SECAM systems. The controller provides temporary storage and control capability for the S100 interface bus system. The controller organizes the data into data blocks and synchronizes the data to TV signals during the write mode. The control further replicates data for error detection in the read and write modes.
    Type: Grant
    Filed: June 4, 1982
    Date of Patent: July 16, 1985
    Assignee: Alpha Microsystems
    Inventor: John D. Proper