Serial communication apparatus
AssigneeCanon Kabushiki Kaisha
InventorTakashi Soya
Life of this patent
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Abstract
A data transfer system capable of effectively performing serial communication by dividing communication lines into one or plural systems and using the divided lines, according to the number of communication IC's connected on the communication line and a load condition connected to the communication IC is provided. In this system, plural communication lines 410 and 411 are prepared, and the lines 410 and 411 are time divisionally selected according to the contents of connection information set in a select register 462, whereby the serial communication between communication IC's 402 to 405 and a communication controller 401 can be effectively performed.
Claims17
A communication apparatus, comprising:
- communication means for performing a serial communication with a communication device of a plurality of communication devices connected to a sensor or a motor, each communication device being connected to one of a plurality of communication lines;
- connection means for connecting said communication means with one of the plurality of communication lines;
- storage means for storing information used to recognize which communication device is connected to which communication line;
- and
- control means for recognizing which communication line is connected to the communication device to be communicated with, based on the information stored in said storage means, and for controlling said connection means to connect said communication means with the communication line connected to the communication device to be communicated with.
A communication apparatus, comprising:
- a communication unit adapted to perform a serial communication with a communication device of a plurality of communication devices connected to a sensor or a motor, each communication device being connected to one of a plurality of communication lines;
- a selector adapted to connect said communication unit with one of the plurality of communication lines;
- and
- a register adapted to store information used to recognize which communication device is connected to which communication line,
- wherein said communication unit recognizes which communication line is connected to the communication device to be communicated with, based on the information stored in said register, and controls said selector to connect with a communication line connected to the communication device to be communicated with.
A communication apparatus comprising:
- communication means for performing a serial communication with a communication device of a plurality of communication devices that are connected to a sensor or a driver driving a load, each communication device being connected to a communication line of a plurality of communication lines;
- connection means for connecting said communication means with a communication line of the plurality of communication lines;
- storage means for storing information used to recognize which communication device is connected to which communication line;
- control means for recognizing which communication line is connected to the communication device to be communicated with based on the information stored in said storage means, and for controlling said connection means to connect said communication means with the communication line that is connected to the communication device to be communicated with.
A communication apparatus comprising:
- a communication unit, which performs a serial communication with a communication device of a plurality of communication devices that are connected to a sensor or a driver driving a load, each communication device being connected to a communication line of a plurality of communication lines;
- a connector, which connects said communication unit with a communication line of the plurality of communication lines;
- and
- a register, which stores information used to recognize which communication device is connected to which communication line;
- wherein said communication unit recognizes which communication line is connected to the communication device to be communicated with based on the information stored in said register, and controls said connector to connect with the communication line connected to the communication device to be communicated with.
Dependencies are inferred from the claim text.