COMMUNICATION SYSTEM AND COMMUNICATION DEVICE

• US 20140254694A1
• Filed: 06/21/2012
• Published: 09/11/2014
• Est. Priority Date: 06/21/2011
• Status: Abandoned Application

• Current Assignee: Autonetworks Technologies, Ltd. (Sumitomo Corporation), Sumitomo Electric Industries Limited (Sumitomo Corporation), Sumitomo Wiring Systems Limited (Sumitomo Corporation), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Original Assignee: Autonetworks Technologies, Ltd. (Sumitomo Corporation), Sumitomo Electric Industries Limited (Sumitomo Corporation), Sumitomo Wiring Systems Limited (Sumitomo Corporation), Toyota Jidosha Kabushiki Kaisha (Toyota Motor Corporation)
• Inventors: Okada, Ryou, Hagihara, Takeshi, Komatsu, Yutaka, Izumi, Tatsuya, Nii, Kazuhiko, Takata, Yousuke, Andoh, Hiroya, Ochiai, Yuta, Kamaga, Ryuichi, Iwai, Atsushi, Miyashita, Yukihiro, Nakagawa, Nobuyuki
• Application Number:
  US14/128,517
• Publication Number:
  US 20140254694A1
• Time in Patent Office: Days
• US Class Current: 375/258
• CPC Class Codes: H04B 2203/547 via DC power distribution
• CPC Class Codes: H04B 3/21 using a set of bandfilters
• CPC Class Codes: H04B 3/542 the information being in digital form
• CPC Class Codes: H04B 3/548 the power on the line being DC arrangements for feeding power H04L12/10; extracting feeding power from signals H04L25/02
• CPC Class Codes: H04B 3/56 Circuits for coupling, blocking, or by-passing of signals

Abstract

This output circuit sends a control pilot signal which has been generated at a voltage generation source to an input circuit. Between the control pilot line and the ground line of the output side of the output circuit, a communication unit is connected via a transformer. Between the control pilot line and the ground line of the input side of the input circuit, a communication unit is connected via a transformer. Between the output circuit and the transformer, a lowpass filter is interposed. Between the input circuit and the transformer, a lowpass filter is interposed.

Claims

1-10. -10. (canceled)

11. A communication system provided with an output circuit that is provided in an electricity supply apparatus supplying electricity to a vehicle and that outputs a rectangular wave signal of given frequency and with an input circuit that is provided in the vehicle and connected to the output circuit through a plurality of signal lines and that receives the rectangular wave signal outputted by the output circuit, whereby a communication signal is superimposed on the signal lines so that communication is achieved between the vehicle and the electricity supply apparatus, the communication system comprising:

a first communication unit provided in the electricity supply apparatus and transmitting and receiving a communication signal via a first transformer connected between the signal lines;

a second communication unit provided in the vehicle and transmitting and receiving a communication signal via a second transformer connected between the signal lines;

a first lowpass filter interposed between the output circuit and the first transformer; and

a second lowpass filter interposed between the input circuit and the second transformer.

12. The communication system according to claim 11, wherein

each of the first and the second lowpass filters

includes an inductor connected in series to the signal line.

13. The communication system according to claim 12, wherein

each of the first and the second lowpass filters

includes a resistor connected in parallel to the inductor.

14. The communication system according to claim 12, wherein

each of the first and the second lowpass filters

includes a resistor connected in series to the inductor.

15. The communication system according to claim 12, wherein

in each of the first and the second lowpass filters,

a series circuit composed of a capacitor and a resistor is provided between the signal lines of an output side of the inductor.

16. The communication system according to claim 11, wherein

the output circuit

outputs a rectangular wave signal of 1 kHz and

a rise time and a fall time of the rectangular wave signal on an input side of the input circuit are 10 μ

s or shorter.

17. The communication system according to claim 12, wherein

the output circuit

outputs a rectangular wave signal of 1 kHz and

a rise time and a fall time of the rectangular wave signal on an input side of the input circuit are 10 μ

s or shorter.

18. The communication system according to claim 13, wherein

the output circuit

outputs a rectangular wave signal of 1 kHz and

a rise time and a fall time of the rectangular wave signal on an input side of the input circuit are 10 μ

s or shorter.

19. The communication system according to claim 14, wherein

the output circuit

outputs a rectangular wave signal of 1 kHz and

a rise time and a fall time of the rectangular wave signal on an input side of the input circuit are 10 μ

s or shorter.

20. The communication system according to claim 15, wherein

the output circuit

outputs a rectangular wave signal of 1 kHz and

a rise time and a fall time of the rectangular wave signal on an input side of the input circuit are 10 μ

s or shorter.

21. A communication device provided with an output circuit outputting a rectangular wave signal of given frequency via a plurality of signal lines, comprising:

a communication unit superimposing a communication signal onto the signal lines via a transformer connected between the signal lines and thereby transmitting and receiving a communication signal; and

a lowpass filter interposed between the output circuit and the transformer.

22. The communication device according to claim 21, comprising:

a generation unit generating the rectangular wave signal;

a voltage detection unit detecting an output voltage of the output circuit; and

an adjustment unit, in accordance with the voltage detected by the voltage detection unit, adjusting the rectangular wave signal generated by the generation unit.

23. A communication device provided with an input circuit receiving a rectangular wave signal of given frequency via a plurality of signal lines, comprising:

a communication unit superimposing a communication signal onto the signal lines via a transformer connected between the signal lines and thereby transmitting and receiving a communication signal; and

a lowpass filter interposed between the input circuit and the transformer.

24. The communication device according to claim 23, comprising:

a resistor unit including a plurality of resistors in which a resistance thereof is adjustable; and

an adjustment unit, in order to change a voltage of the resistor unit, adjusting the resistance of the resistor unit.