US 6,185,632 B2 · High speed communication protocol for IEEE-1394 including transmission of request and reply writes to a datagram-FIFO-address to exchange commands to end a job

Abstract

A method of transferring image data between an initiator device and a target device using a IEEE 1394 standard bus. The present invention combines management functions, command functions, and isochronous data transfer to achieve the transfer of image data. The present invention discovers a target configuration using IEEE 1394 reads of a target configuration read only memory space. As part of the management function, the present invention uses a modified asynchronous data transfer protocol to establish a connection between the initiator and the target. Next, the present invention uses command functions to begin a job to transfer image data over an isochronous channel. Also, the present invention uses asynchronous data transfer to exchange printer job language commands to end a job.

Claims8

Dependent claims

A method of transferring data between an initiator device and a target device using a IEEE 1394 standard bus, said method comprising the steps of:

reading a target configuration of a read only memory space with IEEE 1394 standard reads;
establishing a connection between the initiator device and the target device using an asynchronous data transfer protocol;
transferring data using an isochronous data transfer protocol;
transmitting request and reply writes to an address to exchange commands to end a job;
and
ending said connection using said asynchronous data transfer protocol.

3 more elements

Dependencies are inferred from the claim text.

High speed communication protocol for IEEE-1394 including transmission of request and reply writes to a datagram-FIFO-address to exchange commands to end a job

Life of this patent

High speed communication protocol for IEEE-1394 including transmission of request and reply writes to a datagram-FIFO-address to exchange commands to end a job

Life of this patent

Abstract

Claims8