Patents by Inventor Martin E. Callahan

Martin E. Callahan 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: 5548323
    Abstract: A multiple input processor includes apparatus for receiving inputs from multiple sources and processing the inputs for transmission to receivers along a television cable network. The processor includes an RF modulator to convert audio signals from signal sources to radio frequency signals for broadcasting through the cable TV system. A microcomputer in the processor processes signals received from multiple sources and selectively transmits the signals through the modulator, The processor includes an audio bus interconnecting the signal-sources and processor to permit receiving, processing, and transmission of audio signals. A telephone interface is connected to the audio bus to permit transmission of signals from a telephone line to the computer, as a separate signal source, and to permit transmission of signals from the audio bus to the telephone line for reporting and other auditing purposes.
    Type: Grant
    Filed: March 30, 1994
    Date of Patent: August 20, 1996
    Assignee: Hollyanne Corp.
    Inventor: Martin E. Callahan