Patents by Inventor Charles R. Johns

Charles R. Johns 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).

  • Publication number: 20080034193
    Abstract: A system and method for providing a mediated external exception extension for a microprocessor are provided. With the system and method, in response to an external exception, a hypervisor determines if the associated external interrupt is directed to a logical partition (LPAR) that has external interrupt handling enabled. If so, the hypervisor sets appropriate state restore registers (SRRs) and passes control to an external interrupt handler of the LPAR. If external interrupt handling is not currently enabled by the LPAR, the hypervisor sets a mediated exception request and returns control to the LPAR. Once the operating system of the logical partition re-enables external interrupt handling, a mediated external interrupt occurs, state information for the LPAR is set in the SRRs, and the external interrupt handler of the LPAR is invoked. In this way, external interrupts may be received by the hypervisor even when external interrupt handling is disabled.
    Type: Application
    Filed: August 4, 2006
    Publication date: February 7, 2008
    Inventors: Michael N. Day, Jonathan J. DeMent, Charles R. Johns, Orran Y. Krieger, Cathy May
  • Publication number: 20080026845
    Abstract: A mechanism is provided for automatically waking a game client responsive to game events occurring within a persistent world online game. An event monitor monitors for events that occur in a persistent virtual world maintained by a game server. When a game event occurs that triggers an offline player rule, the player agent automatically activates execution of game client software. The player agent may also automatically log the player into the game server through the game client software. The player agent may generate and present a launcher dialog prompting the user whether to launch the game client software. Alternatively, the player agent may send a message to a messaging device of the offline player with instructions for launching the game client software remotely. Responsive to a message including a launch command, the player agent automatically launches the game client software on a game client device associated with the offline player.
    Type: Application
    Filed: July 14, 2006
    Publication date: January 31, 2008
    Inventors: Maximino Aguilar, Charles R. Johns, Mark R. Nutter
  • Publication number: 20070298886
    Abstract: A mechanism is provided for configuring offline player behavior within a persistent world game. A player agent for an offline player includes an event monitor that monitors for events that occur in a persistent virtual world maintained by a game server. When a game event occurs that triggers an offline player rule, the player agent may generate game events on behalf of the offline player. The player agent may also receive messages from an offline player. The messages may include commands for adding, removing, or editing offline player rules. A message may also include a command to view a list of rules or fire a one-time execution of a rule upon receipt. Therefore, a player may contribute to the persistent virtual world even when offline by sending commands using a messaging client or Web browser.
    Type: Application
    Filed: June 21, 2006
    Publication date: December 27, 2007
    Inventors: MAXIMINO AGUILAR, JR., Charles R. Johns, Mark R. Nutter
  • Patent number: 5696947
    Abstract: A two dimensional frame buffer memory interface structure is provided. The interface comprises a parallel data bus, a control signal bus, a data cache, and a controller. The parallel data bus transfers a set of pixel data in parallel to the data cache. The control signal bus transfers to the controller a X strobe signal, a Y strobe signal, and a mode signal indicating an interface mode specifying a designated pattern for the pixel data transferred over the parallel data bus. The data cache, controlled by the controller and connected to the parallel data bus, compiles each set of pixel data received over the parallel data bus into the designated pattern of pixels, as indicated by the mode signal.
    Type: Grant
    Filed: November 20, 1995
    Date of Patent: December 9, 1997
    Assignee: International Business Machines Corporation
    Inventors: Charles R. Johns, John T. Roberson
  • Patent number: 4908789
    Abstract: A method and system for addressing memory of an information handling system in which the memory comprises a plurality of memory banks, each of which can support a plurality of different predetermined size memory modules. The sizes of the different modules are multiples of the module having the smallest size. In the embodiment described, two different sizes are employed, a 256K capacity module and a 1 Meg. capacity module, either of which can be installed in 1 of 4 memory banks. The maximum addressable address range is therefore 4 Meg. while the minimum memory is 256K. The address range can be increased in increments of 256K corresponding to 1 segment to a total of 16 contiguous segments or 4 Meg. A memory address bus comprising 22 lines is employed in the system. The 20 low order lines address each bank simultaneously. A converter converts the 4 high order address bits 22-19 to 16 sequentially ordered segment lines.
    Type: Grant
    Filed: April 1, 1987
    Date of Patent: March 13, 1990
    Assignee: International Business Machines Corporation
    Inventors: Dag R. Blokkum, Charles R. Johns, Lee J. Morozink, David L. Peterson