Data transfer on a current supply line

• US 20060038661A1
• Filed: 05/31/2005
• Published: 02/23/2006
• Est. Priority Date: 05/29/2004
• Status: Abandoned Application

• Current Assignee: Daimler AG (Mercedes-Benz Group AG)
• Original Assignee: Daimler Chrysler Company LLC (Stellantis NV)
• Inventors: Reinhold, Volker, Widmann, Daniel
• Application Number:
  US11/140,050
• Publication Number:
  US 20060038661A1
• Time in Patent Office: Days
• US Class Current: 340/310.110
• CPC Class Codes: H04B 2203/547 via DC power distribution
• 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: H04L 7/06 the synchronisation signals differing from the information signals in amplitude, polarity or frequency or length
• CPC Class Codes: H05B 45/10 Controlling the intensity of the light
• CPC Class Codes: H05B 47/185 via power line carrier transmission

Abstract

A method of transmitting data between a first and a second device (2, 3) by way of a power supply line between the first and the second device (2, 3). The power supply and the data transmission take place alternately in a power supply time window (21) and in a data transmission time window (22). As a result of this measure, a separate data transmission line is not be necessary.

Claims

1. A method of transmitting data between a first and a second device by way of a power supply line between the first and the second device (2, 3), said method comprising:

providing power on said power supply line during a power supply time window; and

providing data transmission during a data transmission time window wherein said power supply window and said data transmission window alternate.

2. The method according to claim 1, wherein data transmission time windows and the power supply time windows are defined by the pulse edges of a pulse-width-modulated power supply.

3. The method according to claim 1, wherein the data transmission takes place in a unidirectional manner.

4. The method according to claim 1, wherein data transmission takes place in a bidirectional manner.

5. The method according to claim 1, wherein an electric load, which is supplied with the current, is assigned to one of the first and second device.

6. The method according to claim 5, wherein data assigned to the load are transmitted in the data transmission time windows.

7. A data transmission system comprising:

a first device connected to a first end of a power supply line,

a second device connected to a second end of said power supply line for receiving current, wherein the power supply line is used as a data transmission line, wherein the first device includes a first transmitting/receiving unit, wherein the second device includes a second transmitting/receiving unit, and wherein the first device includes a pulse width modulation current pulse device for supplying pulses to the second device.

8. The data transmission system according to claim 7, wherein the first transmitting/receiving unit comprises a microprocessor and controls an electronic switch of the current pulse device for switching the current pulse device.

9. The data transmission system according to claim 7, wherein the second transmitting/receiving unit device comprises a microprocessor connected to the power supply line.

10. The data transmission system according to claim 9, wherein the microprocessor of the second transmitting/receiving unit controls first and second electronic switches with said first switch arranged in series with a load, and said second switch arranged parallel with a diode.

11. The data transmission system according to claim 7, wherein one of a capacitor and an inductance is arranged in the second device.

12. A method of transmitting data between a first device and a second device comprising the steps of:

connecting said first device to said second device by a power supply line;

providing power on said power supply line during a power supply time window; and

providing data transmission on said power supply line in a data transmission time window, wherein a value of said data said transmission is a function of the relationship between the duration of the power supply time window and the data transmission time window.

13. The method according to claim 12, wherein data transmission time windows and power supply time windows are defined by a pulse edges of a pulse-width-modulated power supply.

14. A data transmission system comprising:

a transmitting/receiving unit controlling output of a pulse-width-modulated current;

a load circuit including a switching control device for controlling said output to define and first and second time window, wherein said first time window is a power supply time window and said second time window is a data transmission time window and wherein the value of said data transmission is a function of the relationship of the durations of the first and second time windows.

15. The data transmission system according to claim 14, wherein said transmitting/receiving unit includes a microprocessor and an electronic sewage force switching said power.

16. The data transmission system according to claim 15, wherein said load device includes a second microprocessor connected to said line.

17. The data transmission according to claim 16, wherein said second microprocessor controls first and second electronic switches with said first switch arranged in series with a load and the second switch arranged parallel with a diode.