Patents by Inventor Prapan Tinaphong

Prapan Tinaphong 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: 5198903
    Abstract: A system for wireless connection of a television signal source such as a video cassette player to a standard television receiver within a home. A local television signal is modulated on a nonstandard carrier frequency different form the standard carrier frequencies utilized for conventional broadcast television. The nonstandard broadcast signal is unintelligible to a standard television receiver. Because a nonstandard broadcast signal is employed, the television signal cannot be received by standard television receivers in neighboring homes. A converter unit at the remote location adjacent the television receiver receives the nonstandard signal, amplifies the received signal, mixes the received signal with a local oscillator signal to convert the nonstandard signal to an output signal on a standard television channel carrier frequency at an output terminal connected to the antenna input of a television set.
    Type: Grant
    Filed: October 12, 1990
    Date of Patent: March 30, 1993
    Assignee: Gemini Industries Inc.
    Inventor: Prapan Tinaphong