Patents by Inventor Ramesh Krishnaiyer

Ramesh Krishnaiyer 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: 4060735
    Abstract: A control system including a programmable multiple channel digital controller which is operable to generate control signals which are transmitted over electrical power lines of a building complex for enabling receivers associated with functional devices for controlling the operation of functional devices, the transmitter being operable to transmit control signals during selected ones of a plurality of data channels which define a data frame, and in one embodiment, different ones of the receivers are programmed to respond to control signals transmitted in different data channels for controlling the associated functional device. In another embodiment, the transmitted control signals are coded to represent an address of one or more of the receivers and a control command, each receiver comparing its address with the transmitted address, and the addressed receiver effecting the control function represented by the control command.
    Type: Grant
    Filed: July 12, 1976
    Date of Patent: November 29, 1977
    Assignee: Johnson Controls, Inc.
    Inventors: Gregory A. Pascucci, Ramesh Krishnaiyer, Donald Floyd Pridemore
  • Patent number: 4023163
    Abstract: An alarm transmission system for transmitting alarm and status information from a secured area to a monitoring area over a transmission line includes a code source in the secured area which provides a line security code for securing the transmission line, an alarm source which modifies the line security code in the event of an alarm condition, and a data selection network which enables preselected bits of the line security code and a further bit representing the access/secure status of the secured area to be transmitted to the monitoring area during preassigned time slots for comparison at the monitoring area with corresponding bits of a reference code provided by a reference code source, and an access/source status bit to permit an alarm to be indicted when one or more of the compared bits differ.
    Type: Grant
    Filed: September 19, 1975
    Date of Patent: May 10, 1977
    Assignee: Johnson Controls, Inc.
    Inventors: Ramesh Krishnaiyer, John C. Donovan, Frank J. Esser