SPEAKER SYSTEM FOR MOBILE DEVICE

• US 20070223739A1
• Filed: 11/29/2006
• Published: 09/27/2007
• Est. Priority Date: 03/21/2006
• Status: Active Grant

• Current Assignee: LG Electronics, Inc. (LG Corporation)
• Original Assignee: LG Electronics, Inc. (LG Corporation)
• Inventors: KIM, Jung Tae, NA, Sang Ju
• Granted Patent: US 7,668,571 B2
• Time in Patent Office: Days
• US Class Current: 381/112
• CPC Class Codes: G06F 1/1688 the I/O peripheral being integrated loudspeakers
• CPC Class Codes: H04R 1/26 Spatial arrangements of separate transducers responsive to two or more frequency ranges
• CPC Class Codes: H04R 2420/01 Input selection or mixing for amplifiers or loudspeakers for hearing aids H04R25/43

Abstract

A speaker system for a mobile device includes first and second audio processing units and first and second speakers for reproducing audio signals and outputting the reproduced audio signals. The speaker system also includes a controller configured for transferring the audio signal to the second speaker if a battery is connected to the mobile device. The first speaker is embedded in a main body of the mobile device and the second speaker is embedded in the battery of the mobile device.

Claims

1. A speaker system for a mobile device comprising:

a first audio processing unit and a first speaker for reproducing an audio signal and outputting the reproduced audio signal;

a second audio processing unit and a second speaker for reproducing the audio signal and outputting another reproduced audio signal; and

a controller configured for transferring the audio signal to the second speaker if a battery is connected to the mobile device,

wherein the first speaker is embedded in a main body of the mobile device and the second speaker is embedded in the battery of the mobile device.

2. The speaker system of claim 1, wherein the first audio processing unit and the first speaker output a first register of the audio signal.

3. The speaker system of claim 2, wherein the second audio processing unit and the second speaker output a second register of the audio signal.

4. The speaker system of claim 1, wherein the second speaker is a woofer speaker.

5. The speaker system of claim 1, wherein the battery having the second speaker is a second battery provided as an external battery.

6. The speaker system of claim 2, wherein the first register is a full frequency band, a mid-frequency band or a high frequency band.

7. The speaker system of claim 3, wherein the second register is a low frequency band.

8. The speaker system of claim 1, further comprising a first battery embedded within the main body and a second battery within a battery module releasably connected to the main body, wherein the second speaker is embedded in the battery module.

9. The speaker system of claim 1, wherein the controller is configured for selectively controlling the second audio processing unit to be operated in an active state or a standby state.

10. The speaker system of claim 9, wherein the first audio processing unit and the first speaker selectively output a first register or a second register of the audio signal.

11. The speaker system of claim 10, wherein the second audio processing unit and the second speaker output a third register in the input audio signal.

12. The speaker system of claim 11, wherein the second speaker is a woofer speaker.

13. The speaker system of claim 11, wherein the first audio processing unit and the first speaker are configured for filtering entire frequency bands or a high frequency band of the audio signal, for amplifying the filtered audio signal, and for outputting the amplified audio signal.

14. The speaker system of claim 11, wherein the second audio processing unit and the second speaker are configured for filtering a low frequency band of the audio signal, amplifying the filtered audio signal and outputting the amplified audio signal.

15. The speaker system of claim 1, further comprising a residual quantity detecting sensor for sensing a remaining charge of the battery, wherein the controller controls the second audio processing unit and the second speaker according to the sensed remaining charge of the battery.

16. The speaker system of claim 8, further comprising a residual quantity detecting sensor for sensing a remaining charge of the second battery, wherein the controller controls the second audio processing unit and the second speaker according to the sensed remaining charge of the second battery.

17. The speaker system of claim 1, further comprising a battery sensor configured for detecting if the battery is operatively connected to the mobile device, wherein the controller controls the second audio processing unit according to an output from the battery sensor.

18. The speaker system of claim 1, further comprising an AC power detecting sensor configured for detecting if an AC power source is operatively connected to the mobile device, wherein the controller controls the second audio processing unit according to an output from the AC power detecting sensor.

19. The speaker system of claim 1, wherein the controller is configured for driving the first audio processing unit in a first register filtering mode if the second audio processing unit and the second speaker are not operatively processing the audio signal.

20. The speaker system of claim 19, wherein the controller is configured for driving the first audio processing unit in a second register filtering mode when the second audio processing unit and the second speaker are operatively operated.

21. The speaker system of claim 1, wherein the controller is configured for selectively interrupting the first audio signal processing unit and the second audio signal processing unit in a speaker bypass mode.

22. The speaker system of claim 21, wherein the speaker bypass mode comprises a headset operatively connected to the mobile device.

23. A speaker system for a mobile device comprising:

a first audio processing unit and a first speaker for reproducing an audio signal and outputting the reproduced audio signal;

a second audio processing unit and a second speaker for reproducing the audio signal and outputting another reproduced audio signal; and

a controller configured for selectively transferring the audio signal to the first speaker and the second speaker,

wherein the first speaker is embedded in a main body of the mobile device, and the second speaker is embedded in a battery module of the mobile device or is embedded in a docking station operatively connected with the mobile device.

24. A method of controlling a speaker system for a mobile device, comprising:

determining if a battery module having an embedded speaker is operatively connected with the mobile device; and

controlling an operation mode of an audio signal processing unit based on whether the battery module is operatively connected with the mobile device; and

transmitting an audio signal from the mobile device to the embedded speaker in the battery module.

25. The method of claim 24, wherein the battery module is integrally fitted within a main body of the mobile device or is integrally fitted within a docking station operatively connected with the mobile device.

26. The method of claim 24, further comprising outputting the audio signal through another speaker embedded within a main body of the mobile device, wherein the other speaker embedded within the main body of the mobile device filters a different register of the audio signal compared to a register of the embedded speaker within the battery module.

27. The method of claim 24, further comprising bypassing the audio signal processing unit if the battery module is not operatively connected with the mobile device.

28. The method of claim 24, further comprising:

detecting a remaining charge of the battery module is detected when the second battery is mounted, and

controlling the audio signal processing unit based on the detected remaining charge of the battery module.

29. The method of claim 28, further comprising controlling the audio signal processing unit without considering the remaining charge of the battery module if an AC power supply is operatively connected with the mobile device.

30. The method of claim 24, selectively controlling the audio signal processing unit responsive to a user-defined input.