Broadcasting device having power frequency carrier

• US 20080123869A1
• Filed: 11/08/2006
• Published: 05/29/2008
• Est. Priority Date: 11/11/2005
• Status: Abandoned Application

• Current Assignee: Hansder Engineering Co., Ltd.
• Original Assignee: Hansder Engineering Co., Ltd.
• Inventors: Huang, Yuan-Yu
• Application Number:
  US11/594,237
• Publication Number:
  US 20080123869A1
• Time in Patent Office: Days
• US Class Current: 381/82
• CPC Class Codes: H04R 27/00 Public address systems circuits for preventing acoustic reaction H04R3/02; circuits for distributing signals to loudspeakers H04R3/12; monitoring or testing arrangements for public address systems H04R29/007; amplifiers H03F

Abstract

The present invention receives a voice signal from an input device; then the voice signal is processed through an amplifier; and, then, the voice signal is transmitted along an indoor electrical power line with power frequency carrier to be heard by using speakers.

Claims

1. A broadcasting device having power frequency carrier, comprising

(a) an amplifying device comprising a first power frequency carrier device and a signal control module, said signal control module connected with said first power frequency carrier device, said first power frequency carrier device comprising a first junction connected with an indoor electrical power line;

(b) an input device connected with said signal control module of said amplifying device; and

(c) at least one output device comprising a voice output unit and a second power frequency carrier device, said second power frequency carrier device connected with said voice output unit, said second power frequency carrier device comprising a second junction connected with said indoor electrical power line to communicate a voice signal with said amplifying device.

2. The broadcasting device according to claim 1, wherein each of said first and said second power frequency carrier devices comprises a single-chip control module, a power carrier module, an electricity module, an outward output unit and an inward input unit.

3. The broadcasting device according to claim 2, wherein said single-chip control module comprises an input receiver, an output controller, a control unit, a communication interface and a relay.

4. The broadcasting device according to claim 2, wherein said power carrier module comprises a transmission rate of 1200 BPS (bit per second).

5. The broadcasting device according to claim 3, wherein said control unit is a 8051 single-chip.

6. The broadcasting device according to claim 3, wherein said control unit comprises a working frequency up to 16 MHz (megahertz).

7. The broadcasting device according to claim 3, wherein said communication interface is an RS232 interface.

8. The broadcasting device according to claim 1, wherein said signal control module comprises an encoder and a switch.

9. The broadcasting device according to claim 1, wherein said input device is a microphone.