Title:
初期化方法、およびデータ伝送装置
Document Type and Number:
Japanese Patent JP3535869
Kind Code:
B2
Abstract:
A first initialization pattern signal is a signal in which a maximum signal level and a minimum signal level appear alternately, and a second initialization pattern signal is a signal in which all signal levels appear in a predetermined arrangement. In a ring-shaped network including plural stages of data transmission apparatuses (100), a transmission unit (110) of each data transmission apparatus outputs the first initialization pattern signal successively to a next-stage data transmission apparatus at turn-on of power or immediately after reset, and a reception unit (120) establishes clock synchronization on the basis of the first initialization pattern signal received. When synchronization is established in all of the data transmission apparatuses, the transmission unit (110) outputs the second initialization pattern signal successively to the next-stage data transmission apparatus, and the reception unit (120) sets evaluation levels for the respective signal levels on the basis of the received second initialization pattern signal, and transmission/reception of data is started when evaluation levels are set in all of the data transmission apparatuses.
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Inventors:
▲たか▼平 豊
勝田 昇
堺 貴久
安井 伸彦
水口 裕二
河田 浩嗣
黒崎 敏彦
勝田 昇
堺 貴久
安井 伸彦
水口 裕二
河田 浩嗣
黒崎 敏彦
Application Number:
JP2002533567A
Publication Date:
June 07, 2004
Filing Date:
October 05, 2001
Export Citation:
Assignee:
松下電器産業株式会社
International Classes:
H04L25/06; H04L25/08; H04L25/49; H04J3/06; (IPC1-7): H04L7/00; H04L7/02; H04L12/43; H04L25/03; H04L25/49
Attorney, Agent or Firm:
早瀬 憲一