Patents by Inventor D. Adam Shiel

D. Adam Shiel 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).

  • Expansion module with external bus for personal digital assistant and design method therefor
    Patent number: 6658508
    Abstract: An expansion module for a Handspring Visor includes a multi-master AMBA Advanced System Bus (ASB). The Springboard bus of the visor is coupled to the ASB bus via Springboard-to-ASB-bus bridge. This bridge includes a protocol translator and a second Arm7 to ASB interface. The protocol translator translates bi-directionally between the Springboard bus protocol and the Arm7TDMI protocol. The translator includes an interface to the Springboard bus and a state machine. The state machine coordinates data transfers between the buses. The state machine also monitors signals indicating when each of the buses begins to treat a data transfer as complete so that the data transfer can be validated or flagged as an error condition. A programmable counter adjusts maximum counts to compensate for different clock frequencies in measuring a write-wait state duration to ensure valid writes from the Visor to the ASB bus.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: December 2, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Loren B. Reiss, Bonnie C. Sexton, D. Adam Shiel, R. Christopher Noonan
  • Bridging a host bus to an external bus using a host-bus-to-processor protocol translator
    Patent number: 6571308
    Abstract: An expansion module for a Handspring Visor (which conforms to the Springboard bus specification) includes a multi-master AMBA Advanced System Bus (ASB). Optionally, an Arm7 processor is attached to this bus via an Arm7 to ASB interface as one master. The Springboard bus of the visor is coupled to the ASB bus via a Springboard-to-ASB-bus bridge. This bridge comprises a protocol translator and a second Arm7 to ASB interface. The protocol translator translates bi-directionally between the Springboard bus protocol and the Arm7TDMI protocol. The translator includes an interface to the Springboard bus and a state machine. The state machine coordinates data transfers between the buses. The state machine also monitors signals indicating when each of said buses begins to treat a data transfer as complete so that the data transfer can be validated or flagged as an error condition.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: May 27, 2003
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Loren B. Reiss, Bonnie C. Sexton, D. Adam Shiel
  • Bridge state-machine progression for data transfers requested by a host bus and responded to by an external bus
    Patent number: 6477609
    Abstract: An expansion module for a Handspring Visor (which conforms to the Springboard bus specification) includes a multi-master AMBA Advanced System Bus (ASB). Optionally, an Arm7 processor is attached to this bus via an Arm7 to ASB interface as one master. The Springboard bus of the visor is coupled to the ASB bus via a Springboard-to-ASB-bus bridge. This bridge comprises a protocol translator and a second Arm7 to ASB interface. The protocol translator translates bi-directionally between the Springboard bus protocol and the Arm7TDMI protocol. The translator includes an interface to the Springboard bus and a state machine. The state machine coordinates data transfers between the buses. The state machine also monitors signals indicating when each of said buses begins to treat a data transfer as complete so that the data transfer can be validated or flagged as an error condition.
    Type: Grant
    Filed: January 31, 2000
    Date of Patent: November 5, 2002
    Assignee: Koninklijke Philips Electronics N.V.
    Inventors: Loren B. Reiss, Bonnie C. Sexton, D. Adam Shiel