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:
Sep. 30, 2003
Filed:
Feb. 28, 2002
Yoichi Nagata, Tokyo, JP;
Hitachi, Ltd., Tokyo, JP;
Abstract
A CMI coding method, a CMI decoding method, a CMI coding circuit, and a CMI decoding circuit which do not adversely affect a main signal to be CMI-coded and which allow a high-speed asynchronous signal to be always transmitted by Coding Rule Violation, with a simple procedure and a simple hardware structure are provided. A CMI coding method is used in which an asynchronous signal is superposed on a main signal with the use of only CRV as CRV. In addition, when the main signal is replaced with CRV for a signal to be superposed, since the main signal cannot be transmitted, the CMI coding method is configured such that two bits of the main signal, which should be originally transmitted in a time slot (CRV-indication time slot) in which CRV is to be disposed and in the next time slot thereof, are two-bit-coded according to a predetermined rule, and the two-bit code is transmitted by the use of the first half and the second half of the next time slot (crammed main-signal time slot).