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:
Jan. 11, 1994
Filed:
Mar. 18, 1992
Applicant:
Inventor:
Satoshi Yashiki, Hiratsuka, JP;
Assignee:
Matsushita Graphic Communication Systems, Inc., Tokyo, JP;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
H04J / ;
U.S. Cl.
CPC ...
370 13 ; 370 79 ; 34082506 ; 371 62 ;
Abstract
A terminal adapter unit for use in a wide-band network based on an ISDN is connected in the data path between a data terminal and the ISDN, and functions to control accessing and releasing a line through the ISDN to an opposite data terminal, in accordance with whether or not data are actually being transferred between the terminals. Unnecessary line utilization costs can thereby be reduced since lengthy intervals in which the terminals are accessing the ISDN while the data transfer is interrupted, due to a data terminal failure or operating error, can be eliminated.