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:
Nov. 07, 2006
Filed:
Oct. 05, 2001
Noboru Katta, Itami, JP;
Yuji Mizuguchi, Hirakata, JP;
Takahisa Sakai, Amagasaki, JP;
Hirotsugu Kawada, Sakai, JP;
Toshihiko Kurosaki, Kobe, JP;
Nobuhiko Yasui, Moriguchi, JP;
Yutaka Takahira, Neyagawa, JP;
Noboru Katta, Itami, JP;
Yuji Mizuguchi, Hirakata, JP;
Takahisa Sakai, Amagasaki, JP;
Hirotsugu Kawada, Sakai, JP;
Toshihiko Kurosaki, Kobe, JP;
Nobuhiko Yasui, Moriguchi, JP;
Yutaka Takahira, Neyagawa, JP;
Matsushita Electric Industrial Co., Ltd., Osaka, JP;
Abstract
A ring-shaped network quickly performs initialization even when a plurality of data transmission apparatuses are connected thereto. Each data transmission apparatus outputs received data to a device connected thereto while performing establishment of clock synchronization based on the received data, and when synchronization is established, it resends the received data. Further, when synchronization of the connected device is established, it sends data supplied from the connected device. Further, a master data transmission apparatus outputs data at turn-on of power or immediately after reset, and a next-stage slave data transmission apparatus receives the data to establish synchronization, and resends the received data when synchronization is established. Thus, synchronization of all the data transmission apparatuses is established while making a round of this data, and then synchronization of devices connected to the respective data transmission apparatuses is established.