Sharing device for multiple audio sources

• US 7,016,266 B2
• Filed: 11/26/2002
• Issued: 03/21/2006
• Est. Priority Date: 11/26/2002
• Status: Active Grant

• Current Assignee: Ying-Cou Wang
• Original Assignee: Ying-Cou Wang
• Inventors: Wang, Ying-Cou
• Primary Examiner(s): DINH, TAN X
• Application Number:
  US10/303,966
• Publication Number:
  US 20040100875A1
• Time in Patent Office: 1,211 Days
• Field of Search: None
• US Class Current: 369/2
• CPC Class Codes: H04B 1/20 for coupling gramophone pick-up, recorder output, or microphone to receiver

Abstract

A sharing device is composed of a distributor and multiple output units. The distributor has multiple input ports to connect different audio sources, such as VCD/DVD players, and has multiple output ports to correspondingly connect to the multiple output units. Each output unit is further connected with a sound output device, e.g. speakers, to broadcast audio signals. When the multiple output units are distributed at different locations, a user in any place is able to select a desired audio source by controlling the output unit and listen to music provided by the selected audio source.

Claims

1. A sharing device for multiple audio sources, the sharing device comprising:

a distributor with multiple input ports and multiple output ports, wherein each input port is adapted to connect with the audio source, each input port of the distributor having a first connector adapted to connect to the audio source, the first connector having two terminals respectively connected to two operational amplifiers, the two operational amplifier having two output terminals as first select pins, each output of the distributor having a first multiplexer with input terminals connected to the first select pins; and

multiple output units respectively connected to the multiple output ports, wherein each output unit is connected to a sound output device, each first multiplexer having output terminals connected to a corresponding output unit through a sound input connector;

each output unit including;

a channel selecting button to select one audio source from the multiple audio sources;

a second multiplexer having first input terminals for connection to the sound input jack and having second input terminals for connection to the sound input connector through a second connector;

a switching chip having an input terminal to connect to the channel selecting button and having two output terminals to connect to the distributor through the second connector; and

a D/A converter connected to the second multiplexer through the volume tuner, wherein the D/A converter is further connected to the sound output device through a third connector;

wherein the second multiplexer further has two control pins connected to the sound input jack.

2. The sharing device as claimed in claim 1, wherein each output unit has a volume tuner to adjust output sound intensity of the sound output device.

3. The sharing device as claimed in claim 1, wherein each output unit has a sound input jack.

4. The sharing device as claimed in claim 2, wherein each output unit has a sound input jack.

5. The sharing device as claimed in claim 1, the switching chip further connects with a plurality of LEDs.

6. The sharing device as claimed in claim 1, wherein connections between the distributor and each output unit are performed by cable lines.