EXTERNAL EXTENDED DEVICE AND AUDIO PLAYBACK METHOD

• US 20180012581A1
• Filed: 06/29/2017
• Published: 01/11/2018
• Est. Priority Date: 07/07/2016
• Status: Active Grant

• Current Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Original Assignee: Beijing Xiaomi Mobile Software Co., Ltd. (Xiaomi Corp.)
• Inventors: LIANG, Xin, FEI, Yukun, WEN, Zhongwen, LONG, Guiming, ZHOU, Ming
• Granted Patent: US 10,839,782 B2
• Time in Patent Office: Days
• CPC Class Codes: G09B 5/00 Electrically-operated educational appliances working with questions and answers G09B7/00; simulators G09B9/00; advertising or displaying in general G09F
• CPC Class Codes: G10H 1/361 Recording/reproducing of accompaniment for use with an external source, e.g. karaoke systems
• CPC Class Codes: G10H 2220/211 for microphones, i.e. control of musical parameters either directly from microphone signals or by physically associated peripherals, e.g. karaoke control switches or rhythm sensing accelerometer within the microphone casing microphones per se H04R
• CPC Class Codes: G10H 2240/011 Files or data streams containing coded musical information, e.g. for transmission audio coding G10L19/00
• CPC Class Codes: G10H 2240/171 Transmission of musical instrument data, control or status information; Transmission, remote access or control of music data for electrophonic musical instruments details about the transmitted data contents G10H2240/011
• CPC Class Codes: G10H 2240/201 Physical layer or hardware aspects of transmission to or from an electrophonic musical instrument, e.g. voltage levels, bit streams, code words or symbols over a physical link connecting network nodes or instruments
• CPC Class Codes: G10H 2240/271 Serial transmission according to any one of RS-232 standards for serial binary single-ended data and control signals between a DTE and a DCE
• CPC Class Codes: G10H 2240/325 Synchronizing two or more audio tracks or files according to musical features or musical timings synchronised lyrics, e.g. for karaoke G10H2220/011
• CPC Class Codes: H04N 21/42203 sound input device, e.g. microphone
• CPC Class Codes: H04N 5/765 Interface circuits between an apparatus for recording and another apparatus

Abstract

An external extended device, an audio processing method and an audio playback method are provided. The external extended device is configured to receive power supplied and a signal transmitted by a television device and the external extended device includes: an integrated physical interface connecting the external extended device and the television device; and a sound-mixing processing chip electrically connected with the integrated physical interface and configured to: acquire an accompaniment audio signal transmitted by the television device via the integrated physical interface; perform sound-mixing processing on a user voice signal gathered by a microphone device and the accompaniment audio signal; and transmit a sound-mixed signal to a power amplifier circuit of the television device via the integrated physical interface.

Claims

1. An external extended device, configured to receive power supplied and a signal transmitted by a television device, the external extended device comprising:

an integrated physical interface connecting the external extended device and the television device;

a sound-mixing processing chip electrically connected with the integrated physical interface and configured to;

acquire an accompaniment audio signal transmitted by the television device via the integrated physical interface;

perform sound-mixing processing on a user voice signal gathered by a microphone device and the accompaniment audio signal; and

transmit a sound-mixed signal to a power amplifier circuit of the television device via the integrated physical interface.

2. The external extended device according to claim 1, wherein the integrated physical interface comprises an Inter-IC Sound (I2S) subinterface configured to transmit an I2S signal;

and

wherein the external extended device is configured to receive the accompaniment audio signal via the I2S interface and transmit the sound-mixed signal via the I2S interface.

3. The external extended device according to claim 2, wherein the integrated physical interface is a USB3.0 interface comprising:

USB2.0 pins configured to constitute a USB2.0 subinterface;

USB3.0 pins configured to constitute the I2S subinterface and comprising;

a first pin configured to transmit a Serial Clock (SCK) signal;

a second pin configured to transmit a Word Selection (WS) signal;

a third pin configured to transmit a Serial Data Input (SD IN);

a fourth pin configured to transmit a Serial Data Output (SD OUT); and

a fifth pin configured to transmit any one signal of a Master Clock (MCLK) signal, the SD IN or the SD OUT.

4. The external extended device according to claim 3, further comprising:

a bridge chip comprising an end electrically connected with the USB2.0 subinterface and another end electrically connected with the sound-mixing processing chip, the bridge chip being configured to;

convert a USB accompaniment audio signal transmitted by the television device via the USB2.0 subinterface into an I2S accompaniment audio signal;

transmit the I2S accompaniment audio signal to the sound-mixing processing chip for performing sound-mixing processing on the user voice signal and the I2S accompaniment audio signal and transmitting an I2S sound-mixed signal to the bridge chip;

convert the I2S sound-mixed signal into a USB sound-mixed signal; and

transmit the USB sound-mixed signal to an application processor (AP) of the television device via the USB2.0 subinterface, wherein the AP is configured to save the USB sound-mixed signal as a recording.

5. The external extended device according to claim 4, further comprising a Line Out interface or a SONY/PHILIPS Digital Interface Format (SPDIF);

wherein

the external extended device is configured to transmit the I2S sound-mixed signal to an external power amplifier via the Line Out interface or the SPDIF.

6. An audio playback method, applied in an external extended device and comprising:

acquiring a user voice signal gathered by a microphone device;

receiving an accompaniment audio signal transmitted by a television device via an integrated physical interface between the external extended device and the television device;

performing sound-mixing processing on the user voice signal and the accompaniment audio signal; and

transmitting, via the integrated physical interface, a sound-mixed signal to a power amplifier circuit of the television device for playing back the sound-mixed signal received by the power amplifier circuit via a built-in speaker.

7. The method according to claim 6, wherein the integrated physical interface comprises an I2S subinterface configured to transmit an I2S signal;

and

wherein receiving an accompaniment audio signal transmitted by a television device via an integrated physical interface between the external extended device and the television device comprises;

receiving the accompaniment audio signal transmitted by the television device via the I2S subinterface; and

wherein transmitting a sound-mixed signal to a power amplifier circuit of the television device via the integrated physical interface comprises;

transmitting the sound-mixed signal to the power amplifier circuit of the television device via the I2S subinterface.

8. The method according to claim 7, wherein the integrated physical interface is a USB3.0 interface comprising:

USB2.0 pins configured to constitute a USB2.0 subinterface;

USB3.0 pins configured to constitute the I2S subinterface and comprising;

a first pin configured to transmit a SCK signal;

a second pin configured to transmit a WS signal;

a third pin configured to transmit a SD IN;

a fourth pin configured to transmit a SD OUT; and

a fifth pin configured to transmit any one signal of a MCLK signal, the SD IN or the SD OUT.

9. The method according to claim 7, further comprising:

transmitting the sound-mixed signal to an AP of the television device via the I2S subinterface in the integrated physical interface, wherein the AP is configured to save the sound-mixed signal as a recording.

10. The method according to claim 8, wherein the television device is configured to transmit a USB accompaniment audio signal via the USB2.0 subinterface by calling a USB Audio Class UAC;

and

wherein the method further comprises;

receiving the USB accompaniment audio signal via the USB2.0 subinterface;

converting the USB accompaniment audio signal into an I2S accompaniment audio signal by a bridge chip;

performing sound-mixing processing on the user voice signal and the I2S accompaniment audio signal to generate an I2S sound-mixed signal;

converting the I2S sound-mixed signal into a USB sound-mixed signal by the bridge chip; and

transmitting the USB sound-mixed signal to an AP of the television device via the USB2.0 subinterface by calling the UAC, wherein the AP is configured to save the USB sound-mixed signal as a recording.

11. The method according to claim 10, wherein the external extended device is connected with an external power amplifier via a Line Out interface or a SPDIF;

and

wherein the method further comprises;

transmitting, via the Line Out interface or the SPDIF, the I2S sound-mixed signal to the external power amplifier for playing back the received I2S sound-mixed signal.

12. An audio playback method, applied in a television device and comprising:

transmitting an accompaniment audio signal to an external extended device via an integrated physical interface between the television device and the external extended device;

receiving a sound-mixed signal transmitted by the external extended device to a power amplifier circuit of the television device via the integrated physical interface, wherein the sound-mixed signal is generated after the external extended device performs sound-mixing processing on a user voice signal gathered by a microphone device and the accompaniment audio signal; and

playing back the sound-mixed signal received by the power amplifier circuit via a built-in speaker.

13. The method according to claim 12, wherein the integrated physical interface comprises an I2S subinterface configured to transmit an I2S signal;

and

wherein transmitting an accompaniment audio signal to an external extended device via an integrated physical interface between the television device and the external extended device comprises;

transmitting the accompaniment audio signal to the external extended device via the I2S subinterface.

14. The method according to claim 13, wherein the I2S subinterface has an on state and an off state where the I2S subinterface is prohibited from transmitting the I2S signal;

and

wherein the method further comprises;

detecting that the television device is connected with an external device via the integrated physical interface;

acquiring a device identifier of the external device;

setting the I2S subinterface into the on state when the device identifier indicates that the external device is the external extended device;

setting the I2S subinterface into the off state when the device identifier indicates that the external device is not the external extended device.

15. The method according to claim 13, further comprising:

receiving the sound-mixed signal transmitted by the external extended device via an AP; and

saving the sound-mixed signal as a recording.

16. The method according to claim 13, wherein the integrated physical interface is a USB3.0 interface comprising:

USB2.0 pins configured to constitute a USB2.0 subinterface;

USB3.0 pins configured to constitute the I2S subinterface; and

wherein the method further comprises;

transmitting a USB accompaniment audio signal to the external extended device via the USB2.0 subinterface by calling a USB Audio Class UAC; and

receiving a USB sound-mixed signal transmitted by the external extended device via the USB2.0 subinterface; and

saving the USB sound-mixed signal as a recording.

17. The method according to claim 16, wherein the USB sound-mixed signal is obtained, via the external extended device, by:

converting the USB accompaniment audio signal to obtain an I2S accompaniment audio signal;

performing sound-mixing processing on the user voice signal and the I2S accompaniment audio signal to obtain an I2S sound-mixed signal; and

converting the I2S sound-mixed signal.