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:
Nov. 03, 1998
Filed:
Feb. 28, 1997
Yoshihiro Nakamura, Suwa, JP;
Takao Ogawa, Suwa, JP;
Seiko Epson Corporation, Tokyo, JP;
Abstract
The present invention provides a data transfer device that transfers data via a buffer memory between first and second external interfaces. A FIFO is interposed between the first external interface and the buffer memory. An empty signal is true when the FIFO is empty an empty signal is true and a full signal is true when the FIFO is full. The data transfer device transfers data from the buffer memory to the FIFO when the full signal is false and decrementing a transfer count of data to be transferred. An end signal is set to true when the transfer count reaches zero. An interface device transfers data from the FIFO to the first external interface when the empty signal is false. The data transfer from the FIFO to said first external interface ends when both the end signal and the empty signal area true.