BLUETOOTH MICROPHONE

• US 20190159001A1
• Filed: 11/10/2016
• Published: 05/23/2019
• Est. Priority Date: 05/04/2016
• Status: Active Grant

• Current Assignee: D & L High-Tech Company Limited
• Original Assignee: D & L High-Tech Company Limited
• Inventors: WANG, Qun
• Granted Patent: US 10,382,930 B2
• Time in Patent Office: Days
• CPC Class Codes: H04L 5/14 Two-way operation using the same type of signal, i.e. duplex
• CPC Class Codes: H04M 1/6066 including a wireless connection
• CPC Class Codes: H04M 2250/02 including a Bluetooth interface
• CPC Class Codes: H04R 1/04 Structural association of microphone with electric circuitry therefor in deaf-aid sets H04R25/00
• CPC Class Codes: H04R 1/08 Mouthpieces; Microphones; Attachments therefor
• CPC Class Codes: H04R 2201/107 Monophonic and stereophonic headphones with microphone for two-way hands free communication
• CPC Class Codes: H04R 2420/07 Applications of wireless loudspeakers or wireless microphones
• CPC Class Codes: H04R 2430/01 Aspects of volume control, not necessarily automatic, in sound systems
• CPC Class Codes: H04W 4/80 Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
• CPC Class Codes: H04W 76/14 Direct-mode setup

Abstract

A Bluetooth microphone (10) comprises a controller (MCU) and Bluetooth transceiver (12) arranged to: establish a Bluetooth paired connection with a device; establish an Advanced Audio Distribution Profile, A2DP, connection with the paired device to receive a sequence of packets from the paired device for decoding by the microphone; and establish a Serial Port Profile, SPP, connection with the paired device for simultaneously transmitting a sequence of packets based on a microphone transducer signal to the paired device as the received sequence of packets are being decoded for transmission to a set of headphones.

Claims

1. A Bluetooth microphone comprising:

a transducer arranged to provide an electronic representation of an acoustic signal;

an analog-to-digital converter for converting said electronic representation into a digital signal;

a codec for producing a sequence of packets based on said digital signal;

a decoder for converting a received sequence of packets into a digital stereo signal;

a digital-to-analog converter for converting said digital stereo signal into a stereo analog signal suitable for transmission to a set of headphones; and

a controller and Bluetooth transceiver arranged to;

establish a Bluetooth paired connection with a device;

establish an Advanced Audio Distribution Profile, A2DP, connection with the paired device to receive said sequence of packets for said decoder from said device; and

establish a Serial Port Profile, SPP, connection with the paired device for simultaneously transmitting said produced sequence of packets based on said digital signal to said paired device as said received sequence of packets are being decoded for transmission to said set of headphones.

2. A Bluetooth microphone according to claim 1 further comprising an actuator for signaling to said paired device that said microphone is ready to establish each of said A2DP and said SPP connections.

3. A Bluetooth microphone according to claim 1 further comprising a volume controller for indicating a desired volume for recording said acoustic signal.

4. A Bluetooth microphone according to claim 1 further comprising a headphone socket for receiving and headphone jack and for transmitting said stereo analog signal to said headphones.

5. A Bluetooth microphone according to claim 1 further comprising a USB socket for receiving a USB lead, said socket between operably connected to a re-chargeable battery for charging said Bluetooth microphone.

6. A Bluetooth microphone according to claim 1 wherein said A/D converter is arranged to sample said acoustics signal at between 8 kHz-192 kHz.

7. A Bluetooth microphone according to claim 1 wherein said analog-to-digital converter is arranged to provide a digital representation of between 8 bits to 32 bits resolution of said acoustic signal

8. A Bluetooth microphone according to claim 1 wherein said codec is arranged to encode said digital signal in one of:

AAC, MP3, WMA or aptX formats.

9. A Bluetooth microphone according to claim 1 wherein said controller includes a buffer and wherein said sequence of packets based on said digital signal are transmitted to said paired device through said buffer when communications are available with said paired device.

10. A Bluetooth microphone according to claim 1 that is part of a system including computer executable code which when executed upon a Bluetooth device is arranged to:

establish a paired connection with said Bluetooth microphone;

establish an Advanced Audio Distribution Profile (A2DP) connection with the Bluetooth microphone to transmit said sequence of packets for said decoder to said Bluetooth microphone; and

establish a Serial Port Profile (SPP) connection with the Bluetooth microphone for simultaneously receiving said sequence of packets from said Bluetooth microphone as said sequence of packets are being transmitted to said Bluetooth microphone.

11. A Bluetooth microphone according to claim 10 wherein said computer program code is arranged to provide a user interface enabling a user to select an audio file to be streamed to said Bluetooth microphone through said A2DP connection.

12. A Bluetooth microphone according to claim 11 wherein said computer program code is arranged to provide a user interface enabling a user to initiate each of said A2DP and SPP connections, to begin streaming said selected an audio file and to begin receiving said sequence of packets from said Bluetooth microphone.

13. A Bluetooth microphone according to claim 11 wherein said computer program code is arranged to store said received sequence of packets as an audio file.

14. A Bluetooth microphone according to claim 5 in which said USB socket microphone pins are connected to said controller and wherein said controller is responsive to sensing power being provided to said microphone through said USB socket, for providing an electronic representation of said acoustic signal to said USB socket microphone pins.

15. A Bluetooth microphone comprising:

a transducer arranged to provide an electronic representation of a mono acoustic signal;

an analog-to-digital converter for converting said electronic representation into a digital signal;

a codec for producing a sequence of packets based on said digital signal;

a decoder for converting a received sequence of packets into a digital stereo signal;

a digital-to-analog converter for converting said digital stereo signal into a stereo analog signal suitable for transmission to a set of headphones; and

a controller and Bluetooth transceiver arranged to;

establish a Bluetooth paired connection with a device;

establish a connection with the paired device to receive, from said device, said sequence of packets encoding said digital stereo signal for said decoder; and

establish a connection with the paired device for simultaneously transmitting said produced sequence of packets based on said digital signal to said paired device as said received sequence of packets are being decoded for transmission to said set of headphones.