Communication control system and apparatus

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United States of America Patent

PATENT NO 6069926
SERIAL NO

08959876

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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A communication control system includes a first communication control apparatus connected to one end portion of each of a clock signal line and a data signal line, and a second communication control apparatus connected to the other end portion of each of the clock signal line and the data signal line. In the communication system, the first communication control apparatus outputs a clock to the clock signal line and simultaneously outputs predetermined data to the data signal line, and then outputs a data string to be transmitted, the second communication control apparatus receives the clock from the clock signal line and simultaneously receives the predetermined data from the data signal line, and accordingly starts to receive the predetermined data string, the first communication control apparatus outputs the clock to the clock signal line independently of whether a communication abnormality is detected, and simultaneously outputs inverted data of the predetermined data to the data signal line to initialize the data reception device, and the second communication control apparatus receives the inverted data together with the clock, thereby canceling erroneous recognition of the start of the data string due to the noise mixture into the clock signal line.

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Patent Owner(s)

  • CANON KABUSHIKI KAISHA

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Sekiya, Toshiyuki Mishima, JP 64 444
Soya, Takashi Mishima, JP 27 320

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