CONNECTING DEVICE, PERIPHERAL DEVICE, PERIPHERAL DEVICE SYSTEM, AND CONTROL METHOD THEREOF

Japanese Patent JP3295353

B2

PROBLEM TO BE SOLVED: To actualize a communication regarding control information with more inexpensive constitution for the peripheral device system wherein peripheral devices are branched from one communication bus and connected.
SOLUTION: The connecting device for connecting peripheral devices to one information output device has connectors 21 to 23 for connecting to an upstream device, a downstream device, and the peripheral devices. Image data PDi and its control signal CTLi are transferred through the path extending from the connector 21 to the connector 22. Further, a mode decision switch circuit 24 is interposed in the communication path for control information between the upstream device and a display unit. The mode decision switch circuit 24 tries a communication with the upstream device by using a 2nd communication path, decides whether or not the control information is communicated according to the result, and forms a communication path between the connector 21 and connector 23 so as to communicate the control information between the upstream device and peripheral devices when deciding that the control information is communicated.

Nobuharu Ichihashi
Morimoto beginning
Takashi Yamamoto
Yuichi Matsumoto
Kenji Inoue
Akio Saito
Eiichi Matsuzaki

JP26727197A

June 24, 2002

September 30, 1997

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Canon Inc

G06F3/00; G06F3/153; G09G3/20; G09G3/36; G09G5/00; (IPC1-7): G06F3/00; G06F3/153; G09G3/20; G09G5/00

JP59104844A
JP63257352A
JP696000A
JP8338984A

Yasunori Otsuka (2 outside)

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