TWI401978B - System and method of power saving for playing music mutely - Google Patents

Description

Power saving system and method for silently playing music

The present invention relates to a power management system and method, and more particularly to a power saving system and method for silently playing music.

With the development of society, various electronic devices with audio playback functions have become more and more popular, such as many mobile phones, PDAs (personal digital assistants), handheld game consoles, digital cameras or handheld computers with audio playback software. .

When the user listens to music with these electronic devices with audio playback function, the volume may be muted, such as temporarily interrupting the need to mute, etc., but the hardware of the bottom of the electronic device does not know that the music playback is muted. Therefore, the music data is still transmitted to the lower layer hardware related to music playback, and the audio playback software only controls the power supply of the last stage audio amplifier in the audio signal processing module, and the power consumption of the entire system is not greatly reduced, that is, Can not achieve the purpose of saving electricity.

In view of the above, a preferred embodiment of the present invention provides a power saving system for silently playing music, which is used to save power when playing music silently. The power saving system for silently playing music runs in an electronic device equipped with an audio playback software, an audio driving module, and an audio signal processing module.

The system comprises: a mute playback processing module, configured to turn off the audio signal processing module power supply in the electronic device and discard the audio data stream when the audio playing software is in the silent playing state; and the normal playing processing module is used for playing the audio Turning on the electronic device when the software is in normal play state The audio signal processing module powers and streams the audio data to the audio signal processing module.

The invention also provides a power saving method for silently playing music, which can save power when playing music silently. The method is applied to an electronic device equipped with an audio playing software, an audio driving module and an audio signal processing module.

The method includes the steps of: turning off the power of the audio signal processing module in the electronic device and discarding the audio data stream when the audio playing software is in the silent playing state; and turning on the audio in the electronic device when the audio playing software is in the normal playing state The power of the signal processing module sends the audio data stream to the audio signal processing module.

Compared with the prior art, the power saving system and method for silently playing music enable the audio playing software to silently play music, and control the power of the audio signal processing module on the electronic device to be turned off, thereby saving power.

1‧‧‧Mobile phone

11‧‧‧Audio playback software

12‧‧‧Audio Drive Module

13‧‧‧Audio Signal Processing Module

201‧‧‧Direct Memory Access Control Module

202‧‧‧Audio signal decoder

203‧‧‧Audio Amplifier

204‧‧‧Speakers

10‧‧‧Mute power saving system for playing music

101‧‧‧Play mode recognition module

102‧‧‧Mute playback processing module

103‧‧‧Normal playback processing module

S302‧‧‧Send audio data stream to audio driver module

S304‧‧‧Processing the audio data stream and reporting the progress of the music playback

S306‧‧‧ Is it silent?

S308‧‧‧Enable audio signal processing module power supply

S310‧‧‧Audio data stream is sent to the audio signal processing module

S312‧‧‧Audio playback software is closed

S314‧‧‧ Turn off the audio signal processing module power supply

S316‧‧‧Discard audio data stream

FIG. 1 is a schematic diagram of a functional module and an application environment of a power saving system for silently playing music according to the present invention.

FIG. 2 is a schematic diagram of a module included in the audio signal processing module 13 of FIG.

FIG. 3 is a flow chart of a preferred embodiment of a power saving system for silently playing music according to the present invention.

As shown in FIG. 1 , it is a schematic diagram of a functional module and an application environment of a power saving system for silently playing music. The power saving system for silently playing music (hereinafter referred to as the system) 10 runs on an electronic device with an audio playing software such as a mobile phone, a PDA (personal digital assistant), a handheld game console, a digital camera or a palmtop computer. in. In the preferred embodiment, the electronic device is a cell phone.

The system 10 includes a play mode recognition module 101, a silent play processing module 102, and a normal play processing module 103.

The mobile phone 1 further includes an audio playing software 11, an audio driving module 12, and an audio signal processing module 13.

The play mode recognition module 101 is configured to identify the volume setting of the audio playback software 11.

When the play mode recognition module 101 recognizes that the volume of the audio play software 11 is set to the mute play music state, the mute play processing module 102 is configured to turn off the power of the audio signal processing module 13 on the mobile phone, and The audio data stream after the audio driver module 12 is mixed is discarded.

When the play mode recognition module 101 recognizes that the volume of the audio play software 11 is set to the normal play music state, the normal play processing module 103 is configured to turn on the power of the audio signal processing module 13 on the mobile phone, and The audio data stream after the audio driver module 12 is mixed is sent to the audio signal processing module 13.

As shown in FIG. 2, it is a schematic diagram of a module included in the audio signal processing module 13 of FIG. As can be seen from FIG. 2, the audio signal processing module 13 may include a direct memory access control module 201, an audio signal decoder 202, an audio amplifier 203, and a speaker 204.

The direct memory access controller module 201 is configured to transmit the audio data stream that has been mixed and processed by the audio driving module 12 to the audio signal decoder 202.

The audio signal decoder 202 is for decoding an audio data stream and converting the audio signal from a digital signal to an analog signal.

The audio amplifier 203 is for amplifying the output power of the audio signal.

The speaker 204 is used to convert an electrical signal into a sound signal, such as an earphone.

In particular, the figure is a schematic diagram of a module related to audio signal processing in a mobile phone, and is not limited to a module related to audio signal processing, which can only be a module described in the figure, and can be used for different mobile phones or other electronic devices. Includes other different audio signal processing modules.

As shown in FIG. 3, it is a working flow chart of a preferred embodiment of the power saving method for silently playing music according to the present invention.

Step S302, after the audio playing software is turned on, the audio playing software 11 sends the audio data stream to the audio driving module 12.

In step S304, the audio driving module 12 mixes the received audio data stream, obtains the music playing progress information, and reports the music playing progress information to the audio playing software 11.

In step S306, the play mode recognition module 102 determines whether the current audio play software is in the silent play state. If the mute play is performed, the flow proceeds to step S314, otherwise, the flow proceeds to step S308.

In step S308, the normal play processing module 103 turns on the power of the audio signal processing module 13 on the mobile phone.

In step S310, the normal play processing module 103 inputs the audio signal data stream that has been mixed by the audio drive module 12 into the audio signal processing module 13.

In step S312, it is judged whether or not the audio playback software 11 is turned off. If the audio playback software 11 is turned off, the flow ends, otherwise the flow goes to step S306.

In step S314, the silent play processing module 102 turns off the power of the audio signal processing module 13 on the mobile phone. Please refer to FIG. 2 for a schematic diagram of the audio signal processing module 13.

In step S316, the silent play processing module 102 discards the audio signal data stream processed by the audio drive module 12, and proceeds to step S312.

In summary, the present invention complies with the requirements of the invention patent and submits a patent application according to law. However, the above description is only the preferred embodiment of the present invention, and the scope of the present invention is not limited to the above-described embodiments, and equivalent modifications or variations made by those skilled in the art in light of the spirit of the present invention are It should be covered by the following patent application.

S302‧‧‧Send audio data stream to audio driver module

S304‧‧‧Processing the audio data stream and reporting the progress of the music playback

S306‧‧‧ Is it silent?

S308‧‧‧Enable audio signal processing module power supply

S310‧‧‧Audio data stream is sent to the audio signal processing module

S312‧‧‧Audio playback software is closed

S314‧‧‧ Turn off the audio signal processing module power supply

S316‧‧‧Discard audio data stream

Claims (3)

A power saving system for silently playing music, running in an electronic device equipped with an audio playing software, an audio driving module and an audio signal processing module, the system comprising: a playing mode recognition module for identifying the volume of the audio playing software Setting to determine whether the audio playback software is in silent play; the silent play processing module is configured to turn off the audio signal processing module power supply in the electronic device and discard the audio data stream output by the audio drive module when the audio playback software is in silent play. And a normal play processing module, configured to turn on the audio signal processing module power supply in the electronic device and output the audio data stream output by the audio drive module to the audio signal processing module when the audio play software is in normal play. A power saving method for silently playing music, the method is applied to an electronic device equipped with an audio playing software, an audio driving module and an audio signal processing module, the method comprising the steps of: identifying a volume setting of the audio playing software to determine the audio playing Whether the software is in silent play; when the audio play software is in the silent play state, the power of the audio signal processing module in the electronic device is turned off and the audio data stream is discarded; when the audio play software is in the normal play state, the audio in the electronic device is turned on. The power of the signal processing module sends the audio data stream to the audio signal processing module. The power saving method for silently playing music as described in claim 2, in the step "When the audio playback software is in the silent playback state, the power of the audio signal processing module in the electronic device is turned off and the audio data stream is discarded" The method further includes the steps of: the audio playing software sends the audio data stream to the audio driving module; the audio driving module mixes the received audio data stream, and sends the audio data to the audio playing software. Report music playback progress information.