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:
Mar. 09, 1999
Filed:
Nov. 21, 1997
Mitsuo Nohara, Tokyo, JP;
Katsuyuki Yamazaki, Tokyo, JP;
Kokusai Denshin Denwa Co., Ltd., Tokyo, JP;
Abstract
A data scramble transmission system with a data transmission link coupled between sending and receiving ends is provided. The link adopts transmission frames each of which is constituted by data and control bits periodically added to the data. The system includes a scramble unit located at the sending end, for detecting each of the transmission frames of an input signal stream, for interchanging bit-stream positions of data portion in the detected transmission frame in accordance with a predetermined order to produce interchanged signal stream, and for outputting the interchanged signal stream, and a descramble unit located at the receiving end which receives the interchanged signal stream from the sending end, for detecting each of the transmission frames of the received interchanged signal stream, for reinterchanging bit-stream positions of data portion in the detected transmission frame so as to reconstitute the signal stream inputted into the scramble unit at the sending end, and for outputting the reconstituted signal stream.