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:
Jul. 17, 1990
Filed:
Mar. 31, 1986
Applicant:
Inventors:
Teresa Marzucco, Waltham, MA (US);
John Korpusik, Hudson, NH (US);
Patricia A Martin, Westford, MA (US);
Assignee:
Wang Laboratories, Inc., Lowell, MA (US);
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G06F / ; G06F / ; G06F / ;
U.S. Cl.
CPC ...
364200 ; 3642383 ; 3642543 ; 3642545 ; 3642396 ; 3642328 ; 3642 / ; 3642511 ; 3642513 ;
Abstract
A single chip serial communications controller, adapted for transfer of data to memory in a direct memory access interrupt, generates a status word for each frame of data. To allow for uninterrupted transfer of data to memory from frame to frame, the status words are stored in a FIFO along with word counts corresponding to the frames to allow for subsequent identification of the addresses to which the data frames are assigned. The FIFO is incremented at the end of each frame and decremented as each status word is read by a CPU.