Control method and communication device
First Claim
1. A control method for a device connected to a predetermined network and having a first communication process unit for executing communication in an asynchronous communication mode and a second communication process unit for executing communication in a synchronous communication mode, comprising the power supply control step of controlling a power supply of the second communication process unit for executing a communication process in the synchronous communication mode independently of a power supply of the first communication process unit for executing a communication process in the asynchronous communication mode.
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Abstract
A power consumption required for communication between communication devices connected to a network constituted by an IEEE 1394 bus line is reduced. When communication in a synchronous communication mode and communication in an asynchronous communication mode can be performed, a power supply of a part (110) for a communication process in a synchronous communication mode is controlled independently of a power supply of a part (105, 106) for executing a communication process in an asynchronous communication mode. The power supply of the part (105, 106) for executing the communication process in the asynchronous communication mode is controlled independently of the power supply of the part (110) for executing the communication process in the synchronous communication mode.
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Citations
23 Claims
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1. A control method for a device connected to a predetermined network and having a first communication process unit for executing communication in an asynchronous communication mode and a second communication process unit for executing communication in a synchronous communication mode, comprising
the power supply control step of controlling a power supply of the second communication process unit for executing a communication process in the synchronous communication mode independently of a power supply of the first communication process unit for executing a communication process in the asynchronous communication mode.
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11. A control method for a device connected to a predetermined network and having a first communication process unit for executing communication in a synchronous communication mode and a second communication process unit for executing communication in an asynchronous communication mode, comprising
the power supply control step of controlling a power supply of the second communication process unit for executing a communication process in the asynchronous communication mode independently of a power supply of the first communication process unit for executing a communication process in the synchronous communication mode.
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13. A communication device which is connected to a predetermined network and which can perform synchronous communication in a synchronous communication mode through the network and asynchronous communication in the asynchronous communication mode through the network, comprising:
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a first communication process unit for performing a communication process in the synchronous communication mode;
a second communication process unit for performing a communication process in the asynchronous communication mode;
an input/output unit for performing inputting/outputting between the first and second communication process units and the network; and
a control unit for controlling the synchronous communication and the asynchronous communication to independently control only the power supply of the first communication process unit.
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22. A communication device which is connected to a predetermined network and which can perform synchronous communication in a synchronous communication mode through the network and asynchronous communication in the asynchronous communication mode through the network, comprising:
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a first communication process unit for performing a communication process in the synchronous communication mode;
a second communication process unit for performing a communication process in the asynchronous communication mode;
an input/output unit for performing inputting/outputting between the first and second communication process units and the network; and
a control unit for controlling the synchronous communication and the asynchronous communication so that only the power supply of the second communication process unit can be independently controlled. - View Dependent Claims (23)
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Specification