The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 27, 1995
Filed:
May. 03, 1994
Edward P Lawler, Fairport, NY (US);
Eastman Kodak Company, Rochester, NY (US);
Abstract
A digital data system includes a circuit for controlling data transfer between a four byte wide pathway, such as a VME bus, and a byte wide device, such as a SCSI disk drive by way of a byte wide bus (SCSI bus). The control circuit effects selective data transfer of an odd or even data byte, a data short word (two parallel bytes) or a data long word (four parallel bytes). The transfer circuit includes a four byte wide data register connected to the VME bus, four, byte wide, funnel registers connected in parallel to the data register, a byte wide FIFO memory connected between the funnel registers and the SCSI disk drive via a SCSI bus. A DMA controller and funnel controller state machine control transfer of data from the VME bus to the SCSI disk drive either as a data byte, a data short word or a data long word.