Communication apparatus
First Claim
1. A communication apparatus for providing communication between a power supply device to a load device through an electric line, which is provided detachably between the power supply device and the load device, the electric line including a power line, which supplies power from the power supply device to the load device, the communication apparatus comprising:
- a communication device for transmitting and receiving a communication signal through the electric line;
a detecting circuit for detecting impedance of the electric line; and
a control circuit for switching over the communication device between a waiting state and an operating state based on the impedance detected by the detecting circuit,wherein the load device includes a secondary battery, which is charged by the power supply device through the electric line,the communication device, the detecting circuit and the control circuit are provided in the load device, andthe detecting circuit includes an output circuit for outputting an inspection signal to the line and detecting the impedance of the electric line in response to the inspection signal.
1 Assignment
0 Petitions
Accused Products
Abstract
A charging system supplies charging power from a charging station to an in-vehicle system through a power line. The charging station and the in-vehicle system further include communication devices, which communicate through the power line. The in-vehicle system includes a detecting circuit for detecting impedance of the power line. The in-vehicle system includes a control circuit, which controls switching-over of the communication device between a waiting state and an operating state based on the impedance detected by the detecting circuit. For example, the control circuit detects connection of the cable based on the impedance change of the power line. The control circuit switches the communication device from the waiting state to the operating state in response to the connection of the cable.
16 Citations
18 Claims
-
1. A communication apparatus for providing communication between a power supply device to a load device through an electric line, which is provided detachably between the power supply device and the load device, the electric line including a power line, which supplies power from the power supply device to the load device, the communication apparatus comprising:
-
a communication device for transmitting and receiving a communication signal through the electric line; a detecting circuit for detecting impedance of the electric line; and a control circuit for switching over the communication device between a waiting state and an operating state based on the impedance detected by the detecting circuit, wherein the load device includes a secondary battery, which is charged by the power supply device through the electric line, the communication device, the detecting circuit and the control circuit are provided in the load device, and the detecting circuit includes an output circuit for outputting an inspection signal to the line and detecting the impedance of the electric line in response to the inspection signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18)
-
Specification