Patents by Inventor Prakash Y. Mahajan

Prakash Y. Mahajan 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: 4168469
    Abstract: Communications between processor terminals are carried out through the use of communication adapters. Each adapter receives selected control signals for transmitting or receiving data over a serial communication link to or from a remote terminal. The transmission portion of an adapter includes pretransmission control circuitry which receives control signals and stores transmission control signals which are used to control the format and serial transmission of a frame of data to a remote terminal. Each frame of data is begun and terminated with a uniquely encoded flag byte. Following the first flag byte are successive address and control fields. An optional information field may follow the control field and may include encoded information designating a dynamic change in the byte size of the data.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: September 18, 1979
    Assignee: NCR Corporation
    Inventors: Bipin D. Parikh, Haresh C. Patnaik, Bhagubhai K. Patel, Prabodh M. Dharia, John J. Kurtz, Alfred D. Jenkins, Prakash Y. Mahajan
  • Patent number: 4161719
    Abstract: A technique and implementation of generating and supplying synchronization and error checking signals to a serially transmitted data stream includes the generation of flag bytes which define the end boundaries of the serial data stream, an abort character for aborting the transmission of a frame of data in response to certain conditions, and a diagnostic evaluation character inserted into the data stream. In addition, the invention provides a technique for ensuring that the unique binary code by which a flag byte is defined occurs in the transmitted data stream only where intended. The flag code has been chosen to contain a prescribed number of consecutive one bits, (i.e. -- six) flanked by zeroes, and circuitry monitors the contents of a data frame as it is being serialized out for transmission to a remote terminal at times other than during flag transmission.
    Type: Grant
    Filed: October 4, 1977
    Date of Patent: July 17, 1979
    Assignee: NCR Corporation
    Inventors: Bipin D. Parikh, Haresh C. Patnaik, Bhagubhai K. Patel, Prabodh M. Dharia, John J. Kurtz, Alfred D. Jenkins, Prakash Y. Mahajan