Patents by Inventor Joseph L. Ryan

Joseph L. Ryan 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).

  • Access control logic for video terminal display memory
    Patent number: 4462028
    Abstract: A logical control system is provided for accommodating both single and double byte accesses to a video terminal system display memory to supply video character and visual attribute data to a video screen without limiting the quantity of visual attributes and without the needless occupation of video screen character positions by visual attribute characters.
    Type: Grant
    Filed: February 19, 1981
    Date of Patent: July 24, 1984
    Assignee: Honeywell Information Systems Inc.
    Inventors: Joseph L. Ryan, Elias Safdie, Richard R. Watkins, Frederick E. Kobs
  • CRT Refresh memory system
    Patent number: 4418343
    Abstract: A logic memory control system for accommodating plural read/write requests to a video terminal display memory is provided without the need for multiplexing common busses shared by the video terminal logic devices accessing the display memory, or for compromising video terminal data transfer rates.
    Type: Grant
    Filed: February 19, 1981
    Date of Patent: November 29, 1983
    Assignee: Honeywell Information Systems Inc.
    Inventors: Joseph L. Ryan, Elias Safdie, Richard R. Watkins, Frederick E. Kobs
  • Hardware-firmware CRT display link system
    Patent number: 4414645
    Abstract: Each row of video information in a display memory includes a linking character code followed by address codes representative of the address location in such display memory of a first data character of a next row of video information displayed on the CRT screen. Both row insertions and deletions may be accommodated by changing address codes under firmware control without requiring the complete rewrite of video information stored in the display memory.
    Type: Grant
    Filed: August 27, 1981
    Date of Patent: November 8, 1983
    Assignee: Honeywell Information Systems Inc.
    Inventors: Joseph L. Ryan, Gerald N. Winfrey
  • Character generator display system
    Patent number: 4398190
    Abstract: A logic system is provided in a video system for accommodating the display of both video data characters and graphic characters, and the application of visual attributes to such characters whether occurring singularly or in fields.
    Type: Grant
    Filed: February 19, 1981
    Date of Patent: August 9, 1983
    Assignee: Honeywell Information Systems Inc.
    Inventors: Nicholas R. Long, William E. Peisel, Joseph L. Ryan, John P. Stafford, Richard R. Watkins
  • Graphic and data character video display system
    Patent number: 4394650
    Abstract: A logic system is provided in a video system for accommodating the display of both video data characters and graphic characters.
    Type: Grant
    Filed: February 19, 1981
    Date of Patent: July 19, 1983
    Assignee: Honeywell Information Systems Inc.
    Inventors: Nicholas R. Long, William E. Peisel, Joseph L. Ryan, Richard R. Watkins
  • Data character video display system with visual attributes
    Patent number: 4384285
    Abstract: A logic system is provided in a video system for accommodating the display of video data characters and the application of visual attributes to such characters whether occurring singularly or in fields.
    Type: Grant
    Filed: February 19, 1981
    Date of Patent: May 17, 1983
    Assignee: Honeywell Information Systems Inc.
    Inventors: Nicholas R. Long, Joseph L. Ryan, John P. Stafford, Richard R. Watkins
  • Split system bus cycle for direct memory access of peripherals in a cathode ray tube display system
    Patent number: 4263648
    Abstract: Apparatus in a Cathode Ray Tube (CRT) display allows the sharing of the system bus between the microprocessor (CPU) and Direct Memory Access (DMA) devices without degrading the CPU performance by splitting the system bus cycle into an address phase and a data phase.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: April 21, 1981
    Assignee: Honeywell Information Systems Inc.
    Inventors: John P. Stafford, Richard A. Slater, Frederick E. Kobs, Joseph L. Ryan
  • Daisy chaining of device interrupts in a cathode ray tube device
    Patent number: 4225942
    Abstract: A microprocessor controlled cathode ray tube display system has a plurality of peripheral devices all connected in common to a system bus. Apparatus in each peripheral device activates a single interrupt signal. A single acknowledge response signal to all the devices enables the interrupting device to place its address signals on the system bus thereby initiating a firmware routine for making the interrupting device operative with the system.
    Type: Grant
    Filed: December 26, 1978
    Date of Patent: September 30, 1980
    Assignee: Honeywell Information Systems Inc.
    Inventors: Frederick E. Kobs, Joseph L. Ryan, Minoru Inoshita, Gerald N. Winfrey