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:
May. 04, 1993
Filed:
Oct. 10, 1990
Applicant:
Inventor:
Daniel J Park, Portland, OR (US);
Assignees:
Seiko Corp., both of, JP;
Seiko Epson Corp., both of, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370 941 ; 3701001 ;
Abstract
Data flow control is achieved by use of variable length flags delimiting information packets whereby longer flags result in less information flow and shorter flags result in greater information flow. A single channel carries message data as well as status and command data in information packets delimited by the variable length flags. The channel runs continuously such as to provide a constant flow of status and command data, yet includes flow control for preventing overflow and underflow of message data at the receiving end of the channel.