Patents by Inventor Fumio Endoh

Fumio Endoh 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).

  • System for transmitting a commercial program in a CATV system
    Patent number: 5301245
    Abstract: A CATV system includes a broadcasting station, a satellite, and a local center. Scrambled television signals transmitted from the broadcasting station to the local center through the satellite are descrambled and re-scrambled at the local center, and the re-scrambled TV signals are transmitted to terminal devices. A non-scrambled TV signal included in the TV signal transmitted from the broadcasting station to the local center is detected. The detected non-scrambled TV signal is transmitted to terminal devices without scrambling.
    Type: Grant
    Filed: March 27, 1992
    Date of Patent: April 5, 1994
    Assignee: Pioneer Electronic Corporation
    Inventor: Fumio Endoh
  • CATV transmission system using scrambled signals
    Patent number: 5008934
    Abstract: A CATV system includes a main head end as a system center and a plurality of subhead ends. A baseband TV signal is transmitted from the main head end to the subhead ends through optical fiber cables. A scrambling data generating means is disposed in the main head end to generate scrambling data and transmit those together with the TV signal. A scrambling means is disposed in each subhead end to perform a scrambling operation such that synchronization portions of a video signal is compressed on the basis of the scrambling data.
    Type: Grant
    Filed: June 8, 1989
    Date of Patent: April 16, 1991
    Assignee: Pioneer Electronic Corporation
    Inventor: Fumio Endoh