Data transfer device including communication circuit for controlling communication party
First Claim
1. A data transfer device, comprising:
- a memory for storing firmware for controlling data transfer; and
a communication circuit for transferring data under control of the firmware, wherein the communication circuit has a timer for measuring a time and controls a communicating party in accordance with the value measured by the timer independently from the control of the firmware.
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Abstract
A data transfer device is provided which can perform time management of data transfer in real time for effective use of communication channels. The data transfer device according to the present invention includes a memory for storing firmware for controlling data transfer and a communication circuit for transferring data under control of the firmware. The communication circuit has a timer for measuring a time. In accordance with the measured value of the timer, a communicating party is controlled by the communication circuit independently from the control by the firmware. Here, controlling the communicating party includes to perform polling on the communicating party and to disconnect the link with the communicating party when the polled communicating party does not respond.
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Citations
20 Claims
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1. A data transfer device, comprising:
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a memory for storing firmware for controlling data transfer; and
a communication circuit for transferring data under control of the firmware, wherein the communication circuit has a timer for measuring a time and controls a communicating party in accordance with the value measured by the timer independently from the control of the firmware. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A data transfer device, comprising:
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a memory for storing firmware for controlling data transfer;
a CPU for executing the firmware; and
a communication circuit for transferring data under control of the firmware, wherein the communication circuit has a counter for counting a number of times of switching communication channels and controls a communicating party in accordance with the measured value of the counter separately from the control of the firmware. - View Dependent Claims (10, 11, 12, 13, 14, 15, 16)
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17. A data transfer device, comprising:
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a memory for storing firmware for controlling data transfer, a CPU for executing the firmware; and
a communication circuit for transferring data under control of the firmware, wherein the communication circuit includes at least one buffer provided by corresponding to a communicating party in the one-to-one manner for temporally holding data to be transferred, a transmission path interface for exchanging data with the communicating party through a transmission path, at least one counter provided by corresponding to a communicating party in the one-to-one manner for counting a number of times of switching communication channels and for being initialized in receipt of a response from the corresponding communicating party, and a control circuit for controlling an operation of the communication circuit; and
wherein the communication circuit controls the communication party independently from the control of the firmware. - View Dependent Claims (18, 19, 20)
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Specification