TWO-WIRE ADDRESSING SCHEME

• US 20100026086A1
• Filed: 08/04/2008
• Published: 02/04/2010
• Est. Priority Date: 08/04/2008
• Status: Abandoned Application

• Current Assignee: Yahrzeitronix Incorporated
• Original Assignee: Yahrzeitronix Incorporated
• Inventors: Stellmacher, Rick, Habib, Phillippe, Siegel, Jerry, Budnlak, Mitchell, Berland, Paul, Berland, Kerry S.
• Application Number:
  US12/185,642
• Publication Number:
  US 20100026086A1
• Time in Patent Office: Days
• US Class Current: 307/2
• CPC Class Codes: H04B 2203/5458 Monitor sensor; Alarm systems
• 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

Abstract

A two-wire communications system is disclosed. The disclosed communications system uses a distributed power line and a distributed common line to transmit messages. A power transistor is operated to transmit either a logical high or a logical low using the two signal lines.

Claims

1. A two-wire communications system for transmitting a message to an electronic device and for supplying power to said electronic device, said two-wire communications system comprising:

i) a direct current power line;

ii) a common line;

iii) a power transistor coupled to said direct current power line and to said common line;

iv) a bus controller coupled to said power transistor, said bus controller further adapted to control said power transistor to transmit a message to said electronic device.

2. The two-wire communications system of claim 1 further comprising:

i) a direct current power source; and

ii) a second power transistor coupled to said direct current power line and to said direct current power source,

wherein said bus controller is adapted to transmit a message to said electronic device by controlling said power transistor and said second power transistor.

3. The two-wire communications system of claim 1 wherein said electronic device is an addressable lamp comprising:

i) a light-emitting diode;

ii) a diode comprised of an anode and a cathode, the anode being coupled to said direct current power line;

iii) a capacitor coupled to the cathode of said diode and to said light emitting diode, said capacitor storing energy from said direct current power line and supplying energy to said light-emitting diode; and

iv) a processor coupled to said light-emitting diode, said direct current power line and to said common line, said processor receiving said message and activating said light-emitting diode based on said message.

4. The two-wire communications system of claim 3 incorporated into a Yahrzeit.