Patents by Inventor Henry L. Baker

Henry L. Baker 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: 4538174
    Abstract: A communications system comprising at least one exchange, television signal sources located at the exchange, subscriber's units each connected to the exchange by a respective direct communications link and provided with a television signal receiver, and selectors located at the exchange for selectively connecting the television signal sources to the communications links. The subscriber's units have transmitters for applying data signals to their respective communications links for transmission to the exchange to control the selectors and for transmitting general data to the exchange. The subscriber's units may each comprise two subscriber's stations each of which has a respective television receiver and data signal transmitter. Each subscriber's station is associated with a respective exchange-located selector controlled by that subscriber's station transmitter.
    Type: Grant
    Filed: May 16, 1983
    Date of Patent: August 27, 1985
    Assignee: Communications Patents Limited
    Inventors: Eric J. Gargini, Henry L. Baker
  • Patent number: 4246608
    Abstract: A method for measuring crossview between channels in a wired television broadcasting system is described in which a pseudo random binary pulse sequence signal is applied to a first channel, and the signal on a second channel is correlated with an identical sequence to provide an output representative of the crossview between the first and second channels. This enables crossview measurements to be easily made without interrupting television signals on the channels. The pseudo random binary pulse sequence signal may be applied directly to the first channel or modulated on a carrier for application to the first channel.
    Type: Grant
    Filed: May 31, 1978
    Date of Patent: January 20, 1981
    Assignee: Communications Patents Limited
    Inventor: Henry L. Baker