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. 12, 1998
Filed:
Jun. 27, 1996
Yoshihiko Uematsu, Tokyo, JP;
Shinji Matsuoka, Kanagawaken, JP;
Nippon Telegraph and Telephone Corporation, Tokyo, JP;
Abstract
A pointer processor for use in an SDH/SONET transmission system, realizing a proper VC path management. A pointer interpreter constantly monitors 3X pairs of H1 and H2 bytes to contain a prescribed maximum size pointer AU-4-Xc that can possibly be received by the pointer processor, to obtain and hold an inside AU-size map indicating an occupation state of AU pointers on 3X pairs of H1 and H2 bytes, while generating and holding an assigned AU-size map indicating an assigned state of AU pointers on 3X pairs of H1 and H2 bytes according to an externally set AU pointer size, and compares these two AU-size maps. For a part of map where the inside AU-size map coincides with the assigned AU-size map, the pointer interpreter carries out size-fixed pointer interpretations in pointer sizes specified by the assigned AU-size map, and the pointer generator generates transmission pointers in forms of normal pointers or AISs in the pointer sizes specified by the assigned AU-size map according to the size-fixed pointer interpretations. For a part of map where the inside AU-size map does not coincide with the assigned AU-size map, the pointer generator generates AISs in the pointer sizes specified by the assigned AU-size map as the transmission pointers.