Patent ID: 7925296
Filing Date: 2011-04-12
Classification: H04M

Abstract:
1. An integrated communication apparatus, linked with a public switch telephone network (PSTN) for making a PSTN call, comprising: a Bluetooth earphone having a signal transmitting terminal; and a wireless telephone set body having an earphone receiving slot for receiving the Bluetooth earphone and a control circuit board electrically connected with the signal transmitting terminal of the Bluetooth earphone, wherein the control circuit board comprises: a control module; a Bluetooth module connected with the control module, wherein the Bluetooth module performs a wireless voice communication with the Bluetooth earphone; a PSTN module connected with the control module, wherein the PSTN module links to the PSTN for providing a PSTN call communication service; a voice-signal encoding/decoding circuit connected with the control module and the Bluetooth module, wherein the voice-signal encoding/decoding circuit converts an analog voice-signal and a digital voice-signal; a judging and charging circuit connected with the control module, wherein the judging and charging circuit determines whether the Bluetooth earphone is received in the earphone receiving slot, and charges the Bluetooth earphone when the Bluetooth earphone is received in the earphone receiving slot; a voice-signal switching module connected with the control module, the PSTN module and the voice-signal encoding/decoding circuit, wherein the voice-signal switching module is controlled by the control module to switch a voice-signal transmission path; a speaker; a microphone; and an ECHO eliminating circuit connected with the voice-signal switching module, the speaker and the microphone, wherein the ECHO eliminating circuit is used for eliminating ECHO generated from the speaker and the microphone; wherein the Bluetooth earphone further comprises an absorbable element, and a magnetic element in the earphone receiving slot of the body for attracting the absorbable element of the tooth earphone when the Bluetooth earphone approaches the earphone receiving slot so as to ensure that the Bluetooth earphone is received in the earphone receiving slot and the signal transmitting terminal of the Bluetooth earphone is electrically connected with a control circuit board of the body.