Reset circuit and reset method
First Claim
1. A reset circuit for a communication device,wherein the reset circuit is configured to reset the device by using link information which indicates whether a physical layer is connected or disconnected to an external interface, andwherein the reset circuit comprises:
- a link disconnection judging circuit for judging whether the physical layer is disconnected based on the link information input from an interface circuit comprising the physical layer;
a system reset circuit for resetting the communication device by receiving a reset signal from the link disconnection judging circuit; and
a power reset circuit for disconnecting a power source by receiving a reset signal from the link disconnection judging circuit.
1 Assignment
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Accused Products
Abstract
A reset circuit and a reset method are provided in order to operate a power switch of the main body of a communication device installed in an inaccessible place such as a remote place or a high-altitude place and to execute a reset by software in the case of having problems with firmware or software of a communication device installed in a remote place. In a reset circuit for a communication device, the device is reset by using link information, which indicates whether a physical layer is connected or disconnected to an external interface.
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Citations
14 Claims
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1. A reset circuit for a communication device,
wherein the reset circuit is configured to reset the device by using link information which indicates whether a physical layer is connected or disconnected to an external interface, and wherein the reset circuit comprises: -
a link disconnection judging circuit for judging whether the physical layer is disconnected based on the link information input from an interface circuit comprising the physical layer; a system reset circuit for resetting the communication device by receiving a reset signal from the link disconnection judging circuit; and a power reset circuit for disconnecting a power source by receiving a reset signal from the link disconnection judging circuit. - View Dependent Claims (2, 3, 4)
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5. A resetting method for a communication device comprising the steps of:
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judging whether or not a communication is disconnected based on link information which indicates whether a physical layer is connected or disconnected to an external interface; measuring a time from when the communication is judged to be disconnected by the judging step; resetting the communication device when the time measured in the previous step is over a first predetermined time; and/or resetting a power source when the time measured is over a second predetermined time. - View Dependent Claims (6, 7, 8, 9)
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10. A resetting method for a communication device comprising the steps of:
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judging whether or not a communication is disconnected based on link information which indicates a physical layer is connected or disconnected to an external interface; measuring a time from when the communication is judged to be disconnected by the judging step; resetting the communication device when the time measured in the previous step is over a predetermined time; judging whether or not the communication device is up and running correctly after the resetting step; and resetting a power when the communication device is not judged in the previous step to be correctly up and running. - View Dependent Claims (11, 12, 13, 14)
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Specification