Patents by Inventor Han Jen

Han Jen 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).

  • Data recording system buffer management and multiple host interface control
    Patent number: 5121480
    Abstract: A circuit is provided for control and data transfer between a standard data storage device interface and one of a choice of several host computers. Parallel transition memories in conjunction with a buffer memory under common control of a buffer manager increase the transfer efficiency between the data storage unit and the host computer. Selectable register banks provide interface compatibility with multiple host computers for implementation of the invention.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: June 9, 1992
    Assignee: Western Digital Corporation
    Inventors: Carl Bonke, Han Jen, Marc Acost
  • Intelligent disk drive having configurable controller subsystem providing drive-status information via host-computer expansion bus
    Patent number: 5023831
    Abstract: The invention provides a method and circuit for control of intelligent or integrated disk drives whereby a single computer address port may be used for control of two intelligent disk drives. The circuit requires only a single jumper connection for definition of the drive address. Tristate drivers on all output circuits from the disk drive controller to the host computer are disabled when the drive is not selected.
    Type: Grant
    Filed: April 17, 1990
    Date of Patent: June 11, 1991
    Assignee: Western Digital Corporation
    Inventors: Carl Bonke, Han Jen
  • Multiplexed bus architecture for configuration sensing
    Patent number: 4866309
    Abstract: The invention provides a circuit for use with a standard bidirectional databus having an active current device providing a first logic level in combination with a selectably jumpered passive resistance device providing a second logic level, the active element responsive to an enable signal whereby tristating the bus write drivers and reading the bus will sense a configuration determined by selection of the jumper.
    Type: Grant
    Filed: July 18, 1988
    Date of Patent: September 12, 1989
    Assignee: Western Digital Corporation
    Inventors: Carl Bonke, Han Jen, Marc Goldstone