Sound reproduction in portable electronic equipment

• US 20070127740A1
• Filed: 01/21/2005
• Published: 06/07/2007
• Est. Priority Date: 01/29/2004
• Status: Active Grant

• Current Assignee: Sony Corporation (Sony Group Corp.)
• Original Assignee: Sony Ericsson Mobile Communications USA Incorporated (Sony Group Corp.)
• Inventors: Gustavsson, Stefan
• Granted Patent: US 7,668,320 B2
• Time in Patent Office: Days
• US Class Current: 381/111
• CPC Class Codes: H04M 1/03 Constructional features of telephone transmitters or receivers, e.g. telephone hand-sets
• CPC Class Codes: H04M 1/6016 in the receiver circuit
• CPC Class Codes: H04R 2499/11 Transducers incorporated or for use in hand-held devices, e.g. mobile phones, PDA's, camera's
• CPC Class Codes: H04R 3/002 Damping circuit arrangements for transducers, e.g. motional feedback circuits
• CPC Class Codes: H04R 3/12 for distributing signals to two or more loudspeakers specially adapted for hearing aids H04R25/407

Abstract

The present invention is directed towards a portable electronic equipment (10) comprising a speaker (16) and a receiver (18), wherein the receiver (18) is damped while the speaker (16) is active to provide good sound reproduction.

Claims

1. A portable electronic equipment including a speaker and a receiver for sound reproduction, which speaker and receiver share a back volumes, characterized in that said portable electronic equipment comprises a control/damping unit arranged to damp the receiver while the speaker is active.

2. The equipment of claim 1, wherein said control/damping unit includes a control unit that controls switching between speaker mode and sound receiver mode.

3. The equipment of claim 2, wherein the control unit is arranged to control voltage or current over the receiver such that it avoids the latter to operate as a leak.

4. The equipment according to claim 1, wherein the equipment is a cellular phone, a smart phone or a communicator.

8. The equipment according to claim 2, wherein the equipment is a cellular phone, a smart phone or a communicator.

9. The equipment according to claim 3, wherein the equipment is a cellular phone, a smart phone or a communicator.

5. A method for sound reproduction for a portable electronic equipment including a speaker and a receiver for sound reproduction, comprising:

providing sound reproduction by means of a speaker and a receiver sharing a back volume, and

damping the receiver while the speaker is active.

6. The method according to claim 5, wherein voltage or current over the receiver is controlled such that it avoids the latter to operate as a leak.

7. The method of claim 5, wherein switching between speaker mode and sound receiver mode is controlled to provide damping the receiver while the speaker is active.

10. The method of claim 6, wherein switching between speaker mode and sound receiver mode is controlled to provide damping the receiver while the speaker is active.