TWI569598B - Dynamic adjusting method of a bluetooth speaker - Google Patents

Description

Dynamic adjustment method of Bluetooth sounding device

A dynamic adjustment method of a Bluetooth sounding device, in particular, a dynamic adjustment method of a Bluetooth sounding device when receiving an audio stream data packet, which can reduce the Bluetooth sounding device without affecting the quality of the analog sound signal played by the Bluetooth sounding device The energy consumed.

Bluetooth is a common wireless transmission technology that is commonly used for short-distance data transmission. In data transmission via Bluetooth, one of the two electronic devices can be defined as a master and the other electronic device as a slave. The master device and the slave device are paired together, and a personal area network is constructed, so that the master device and the slave device can transmit data through wireless. In general, the main device can be a mobile phone, and the slave device is a Bluetooth headset or a speaker, wherein the mobile phone can transmit the digital sound data to the Bluetooth earphone or the speaker through the Bluetooth, and the Bluetooth earphone can also transmit the digital sound data to the mobile phone. .

The invention is a dynamic adjustment method of a Bluetooth sounding device, which is mainly arranged in a Bluetooth sounding device, wherein the Bluetooth sounding device adjusts the dynamic state into an active state. The interval between the interval and the idle state can reduce the energy consumed by the Bluetooth sounding device when receiving the packet.

The invention is a dynamic adjustment method of a Bluetooth sounding device, which can adjust the time interval between the Bluetooth sounding device entering the active state and the time interval of entering the idle state according to the connection quality between the Bluetooth sounding device and the electronic device, thereby Under the premise of affecting the connection quality between the Bluetooth sounding device and the electronic device, the energy consumed by the Bluetooth sounding device is reduced.

The invention is a dynamic adjustment method of a Bluetooth sounding device, which can compare the number and level of audio stream data packets temporarily stored by the Bluetooth sounding device, and adjust the time when the Bluetooth sounding device enters the active state according to the result of the comparison. The interval between the interval and the idle state, thereby reducing the energy consumed by the Bluetooth sounding device without affecting the playback quality of the Bluetooth sounding device.

In order to achieve the above objective, the present invention provides a dynamic adjustment method for a Bluetooth sounding device, wherein the Bluetooth sounding device is adapted to receive an audio stream data packet through Bluetooth, and the Bluetooth sounding device is in an active state in receiving the audio stream data packet. Switching between an idle state, and the following steps: counting the number of audio stream data packets temporarily stored by the Bluetooth sounding device; and adjusting the Bluetooth sounding device to enter an active state according to the number of audio stream data packets temporarily stored by the Bluetooth sounding device The interval between the time interval and the time interval to enter the idle state.

In an embodiment of the dynamic adjustment method of the present invention, the method includes the following steps: the Bluetooth sounding device enters an active state, and receives and temporarily stores the audio stream data packet.

In an embodiment of the dynamic adjustment method of the present invention, the Bluetooth sounding device includes a temporary storage unit for temporarily storing the received audio stream data packet.

In an embodiment of the dynamic adjustment method of the present invention, wherein the Bluetooth sounding device enters The active time interval is greater than or equal to the time interval to enter the idle state.

In an embodiment of the dynamic adjustment method of the present invention, the method includes the following steps: comparing the number of audio stream data packets temporarily stored by the Bluetooth sounding device with a level.

In an embodiment of the dynamic adjustment method of the present invention, the method includes the following steps: when the number of audio stream data packets temporarily stored by the Bluetooth sounding device is less than the level, increasing the time interval for the Bluetooth sounding device to enter the active state, and reducing the Bluetooth sounding device entering The time interval between idle states.

In an embodiment of the dynamic adjustment method of the present invention, the method includes the following steps: when the number of audio stream data packets temporarily stored by the Bluetooth sounding device is greater than a level, reducing or maintaining a time interval for the Bluetooth sounding device to enter an active state, and increasing or maintaining The time interval between the Bluetooth sounding device entering the idle state.

In an embodiment of the dynamic adjustment method of the present invention, the method includes the following steps: the Bluetooth sounding device receives and temporarily stores the audio stream data packet by an electronic device.

In an embodiment of the dynamic adjustment method of the present invention, the time interval in which the Bluetooth sounding device enters the active state is greater than or equal to the time interval during which the electronic device transmits the audio stream data packet.

In an embodiment of the dynamic adjustment method of the present invention, the method includes the following steps: the Bluetooth sounding device is paired with the electronic device, and the time interval for transmitting the audio stream data packet by the electronic device is obtained.

The features, implementations, and utilities of the present invention are described in detail below with reference to the drawings.

10‧‧‧Bluetooth transmission system

11‧‧‧Electronic devices

12‧‧‧Audio Streaming Data Packet

13‧‧‧Bluetooth sounding device

131‧‧‧Scratch unit

14‧‧‧ analog audio signal

FIG. 1 is a schematic structural diagram of an embodiment of a Bluetooth transmission system according to the present invention.

FIG. 2 is a flow chart showing the steps of an embodiment of a method for dynamically adjusting a Bluetooth sounding device according to the present invention.

FIG. 3 is a schematic diagram showing the time interval of an active state and an idle state of an embodiment of the Bluetooth sounding device according to the present invention.

FIG. 4 is a schematic diagram showing the time interval of an active state and an idle state according to still another embodiment of the Bluetooth sounding device of the present invention.

Figure 5 is a graph showing the number and level of audio stream data packets temporarily stored by the Bluetooth sounding device of the present invention.

1 is a schematic structural diagram of an embodiment of a Bluetooth transmission system according to the present invention, and FIG. 2 is a flow chart of steps of an embodiment of a method for dynamically adjusting a Bluetooth sounding apparatus according to the present invention. As shown in the figure, the Bluetooth transmission system 10 of the present invention mainly includes at least one electronic device 11 and at least one Bluetooth sounding device 13. For example, the electronic device 11 can be a mobile phone, a smart phone, a tablet computer, a notebook computer or a computer. The Bluetooth sounding device 13 is a Bluetooth headset, a Bluetooth speaker or a Bluetooth handsfree.

For convenience of description, an electronic device 11 and a Bluetooth sounding device 13 are taken as an embodiment in the drawings and the following description of the present invention. However, those having ordinary knowledge in the technical field of the present invention may be described by the present invention. It is utilized on a plurality of electronic devices 11 and a plurality of Bluetooth sounding devices 13. In addition, the method of the present invention is mainly applied to Bluetooth sounding. On the device 13, wherein the Bluetooth sounding device 13 is adapted to receive the audio stream data packet 12 via Bluetooth, and the electronic device 11 is not a necessary component of the present invention and is not a limitation of the present invention.

The electronic device 11 can be used to store digital audio data, and the electronic device 11 and the Bluetooth sounding device 13 can perform Bluetooth connection. The electronic device 11 can transmit the digital audio data to the Bluetooth sounding device 13 by means of a packet. For example, the Bluetooth sounding device 13 can receive the audio stream data packet 12 transmitted by the electronic device 11 and further convert the audio. The stream data packet 12 performs a digital analog conversion to emit an analog audio signal 14, such as an audio signal.

In an embodiment of the invention, the electronic device 11 can be defined as a master device, and the Bluetooth sounding device 13 is defined as a slave device (Slave). Before the electronic device 11 transmits the audio stream data packet 12 to the Bluetooth sounding device 13 via Bluetooth, it is necessary to first establish a Bluetooth connection between the electronic device 11 and the Bluetooth sounding device 13.

When the Bluetooth connection is made, the electronic device 11 and the Bluetooth sounding device 13 first perform pairing to synchronize the clocks of the electronic device 11 and the Bluetooth sounding device 13, and use the same clock. During the pairing process, the electronic device 11 continuously sends an inquiry packet, and when the Bluetooth sounding device 13 in the adjacent area receives the inquiry packet, for example, the wireless transmission range of the Bluetooth in the nearby area, the Bluetooth sounding device 13 sends a response to the electronic device 11. The packet, wherein the response packet includes a Bluetooth device address (BD_ADDR, bluetooth address) of the Bluetooth sounding device 13.

After receiving the response packet sent by the Bluetooth sounding device 13, the electronic device 11 sends a connection packet according to the Bluetooth device address of the response packet. Since the Bluetooth device address is included in the connection packet, only the Bluetooth sounding device 13 can receive the electronic device 11 The transmitted connection packet.

When the Bluetooth sounding device 13 receives the connection packet, the clock of the electronic device 11 can be known from the content of the connection packet, and the Bluetooth sounding device 13 is synchronized with the clock of the electronic device 11, for example, the electronic device 11 and the Bluetooth. The sounding device 13 uses the same clock. Through the above steps, the Bluetooth connection between the electronic device 11 and the Bluetooth sounding device 13 can be completed, so that the audio stream data packet 12 can be transmitted between the electronic device 11 and the Bluetooth sounding device 13 via Bluetooth.

In general, in order to improve the quality of sound playback, the electronic device 11 and the Bluetooth sounding device 13 generally transmit the audio stream data packet 12 through the Bluetooth Audio Distribution Profile (A2DP). The Bluetooth Stereo Audio Transmission Specification (A2DP) specifies a method for asynchronously transmitting audio stream data packets using Bluetooth. The Bluetooth stereo audio transmission specification (A2DP) enables Bluetooth to transmit high quality stereo music.

Specifically, the Bluetooth sounding device 13 includes a temporary storage unit 131 and can be used for temporarily storing the audio stream data packet 12 received by the Bluetooth sounding device 13. In order to improve the quality of the analog analog audio signal 14, the Bluetooth sounding device 13 usually waits until the temporarily stored audio stream data packet 12 accumulates to a certain amount before converting the temporarily stored audio stream data packet 12 into an analog audio signal. 14, and play analog audio signal 14. In the embodiment of the present invention, the Bluetooth sounding device 13 defines a water level in advance, and when the temporarily stored audio stream data packet 12 is greater than the level, the audio stream data packet 12 is converted and played.

Of course, in the actual application, the Bluetooth sounding device 13 may include a Bluetooth transmission interface, a control unit, a digital analog conversion unit, a decoding unit, and/or a speaker. The above components are conventional technologies for constructing the Bluetooth sounding device 13. In the technical field of the invention Those of ordinary skill can construct the Bluetooth sounding device 13 according to the currently known technology. In the present invention, the actual configuration of the Bluetooth sounding device 13 is not a main technical feature, and the focus of the present invention is to change the method for the conventional Bluetooth sounding device 13 to receive the audio stream data packet 12, so that the Bluetooth sounding device is not in the embodiment of the present invention. The construction of 13 is described in detail.

During the connection between the Bluetooth sounding device 13 and the electronic device 11, the state of the Bluetooth sounding device 13 may include an active mode or a sniff mode. When the Bluetooth sounding device 13 and the electronic device 11 remain in the connected state, and the audio stream data packet 12 is not transmitted between the two, the Bluetooth sounding device 13 will normally enter the listening mode. Specifically, the listening mode is suitable for the Bluetooth sounding device 13 to receive only a small amount of data each time, and when the Bluetooth sounding device 13 enters the listening mode, the Bluetooth sounding device 13 will not remain active for a long time, and the province can be saved. The purpose of electricity.

When the Bluetooth sounding device 13 is to receive the audio stream data packet 12 by the electronic device 11, the Bluetooth sounding device 13 enters an active mode. The Bluetooth sounding device 13 entering the active state can receive the audio stream data packet 12 to increase the speed at which the Bluetooth sounding device 13 receives the audio stream data packet 12 and improve the quality of the analog sound signal 14 played by the Bluetooth sounding device 13.

As described above, after the Bluetooth sounding device 13 enters the active mode, the speed at which the Bluetooth sounding device 13 receives the audio stream data packet 12 from the electronic device 11 can be accelerated, and the Bluetooth sounding device 13 can be used to play the analog audio signal. The quality of 14 will also increase the energy consumed by the Bluetooth sounding device 13 and shorten the working time of the Bluetooth sounding device 13.

To this end, the present invention provides a method in which the Bluetooth sounding device 13 receives an audio signal. In the process of receiving the audio stream data packet 12 by the Bluetooth sounding device 13, the Bluetooth sounding device 13 does not continuously maintain the active state, but repeatedly switches between the active state and the idle state, as shown in FIG. . When the Bluetooth sounding device 13 enters the active state, the audio stream packet 12 can be received and temporarily stored, and when the Bluetooth sounding device 13 enters the idle state, the audio-poor stream packet 12 is not received.

In an embodiment of the present invention, when the connection between the Bluetooth sounding device 13 and the electronic device 11 is good, for example, the bandwidth of the transmission packet between the two is not occupied, the Bluetooth sounding device 13 can be brought into an active state. The time interval T1 is approximately equal to the time interval T2 entering the idle state, for example, the time interval T1 of the active state may be made greater than or equal to the time interval T2 of the idle state. In this way, not only the speed at which the Bluetooth sounding device 13 receives the audio stream data packet 12 but also the energy consumed by the Bluetooth sounding device 13 can be maintained.

Of course, the above description is only an embodiment of the present invention. In actual application, the time interval T1 of the Bluetooth sounding device 13 entering the active state is not greater than or equal to the time interval T2 of entering the idle state, and the time interval T1 may be made smaller. Time interval T2.

In a practical application, the Bluetooth sounding device 13 can adjust the time interval T1 of entering the active state and the time interval T2 of entering the idle state according to the time interval (Tpoll) of the audio stream data packet 12 transmitted by the electronic device 11, for example, the Bluetooth sounding device can be made. The time interval T1 of entering the active state is greater than or equal to the time interval (Tpoll) of the electronic device 11 transmitting the audio stream data packet 12, so that the Bluetooth sounding device 13 receives the audio stream data packet 12 by the electronic device 11. In addition, during the process of pairing the electronic device 11 with the Bluetooth sounding device 13, the Bluetooth sounding device 13 can obtain the time interval during which the electronic device 11 transmits the audio stream data packet 12.

Through the above transmission method, although the Bluetooth sounding device 13 can be simultaneously provided It has the advantages of good playback quality and low power consumption. However, when the connection quality between the Bluetooth sounding device 13 and the electronic device 11 is not good, for example, the bandwidth of the transmission packet between the two is occupied, the Bluetooth sounding device 13 It may not be possible to maintain the quality of the playback analog audio signal 14.

To this end, the present invention further improves the above method. During the process in which the Bluetooth sounding device 13 receives the audio stream data packet 12 from the host device 11 via Bluetooth, the Bluetooth sounding device 13 will also switch between the active state and the idle state. Please refer to FIG. 1 and FIG. 2, the Bluetooth sounding device 13 temporarily stores the received audio stream data packet 12, and counts the number of the temporarily stored audio stream data packets 12, for example, the Bluetooth sounding device 13 can The audio stream data packet 12 is temporarily stored in the temporary storage unit 131, and the number of the audio stream data packets 12 temporarily stored in the temporary storage unit 131 is counted, as shown in step 21.

Then, the Bluetooth sounding device 13 adjusts the time interval T1 between the active state and the time interval T2 to enter the idle state according to the number of the temporarily stored audio stream data packets 12, as shown in step 23. In an embodiment of the present invention, the number and level of the audio stream data packets 12 temporarily stored by the Bluetooth sounding device 13 may be further compared, as shown in step 22. When the number of the temporarily stored audio stream data packets 12 is less than the level, the speed at which the Bluetooth sounding device 13 receives the audio stream data packet 12 is too low, and the time interval T1 at which the Bluetooth sounding device 13 enters the active state can be increased. And reduce the time interval T2 into the idle state. On the other hand, when the number of the temporarily stored audio stream data packets 12 is greater than the level, the time interval T1 at which the Bluetooth sounding device 13 enters the active state is reduced or maintained, and the time interval T2 into which the idle state is entered is increased or maintained.

By adjusting the time interval T1 of the active state of the Bluetooth sounding device 13 and the time interval T2 of entering the idle state through the above dynamic manner, the Bluetooth sound can be maintained. The device 13 receives and plays the quality of the audio stream data packet 12, and also reduces the energy consumed by the Bluetooth sounding device 13 when transmitting the audio stream data packet 12. Even if there is interference or poor connection between the electronic device 11 and the Bluetooth sounding device 13, for example, the bandwidth of the transmitted data is occupied, the Bluetooth sounding device 13 does not affect the receiving and playing of the audio stream data packet 12 Quality.

In an embodiment of the present invention, as shown in FIG. 3, all the time that the Bluetooth sounding device 13 is in the active state is between 50% and 100% of all the connection time T, for example, in the initial stage, the Bluetooth sounding device 13 The time interval T1 to enter the active state is about the same as the time interval T2 to enter the idle state. The above-mentioned ratio is only an embodiment of the present invention, and is not a limitation of the scope of the present invention. In practical applications, the Bluetooth sounding device 13 can be in an active state for less than 50% of all connection time Ts. .

Please refer to FIG. 4 and FIG. 5 , wherein the dotted line of FIG. 5 is the level, and the solid line is the number of audio stream data packets 12 temporarily stored by the Bluetooth sounding device 13 . When the connection quality between the Bluetooth sounding device 13 and the electronic device 11 is degraded, the number of audio stream data packets 12 temporarily stored by the Bluetooth sounding device 13 may be less than the level, as shown in FIG. 4 and FIG. As shown in an interval D1, wherein the solid line representing the number of packets falls below the dotted line representing the level, the Bluetooth sounding device 13 will extend the time interval T1 into the active state and shorten the time interval T2 into the idle state, thereby shortening the time interval T2 into the idle state, thereby To increase the speed at which the Bluetooth sounding device 13 receives the audio stream data packet 12.

When the connection quality between the Bluetooth sounding device 13 and the electronic device 11 continues to be poor, as shown in the second interval D2 of FIGS. 4 and 5, the Bluetooth sounding device 13 will continue to extend the time interval to enter the active state. T1 and continue to shorten the time interval to enter idle state T2. In extreme cases, such as when the quality of the connection is very poor, the Bluetooth sounding device 13 can adjust the time interval T2 to enter the idle state to zero, and keep the Bluetooth sounding device 13 continuously in an active state to maintain or improve the transmitted audio. The number of streamed data packets 12. In other words, in the method disclosed by the present invention, the quality of the Bluetooth sounding device 13 receiving and playing the audio stream data packet 12 will take precedence over the energy saved.

When the connection quality between the Bluetooth sounding device 13 and the electronic device 11 is gradually improved, as shown in the third interval D3 of FIGS. 4 and 5, the Bluetooth sounding device 13 shortens the time interval T1 into the active state, and Increase the time interval T2 to enter the idle state. When the connection quality between the Bluetooth sounding device 13 and the electronic device 11 returns to the normal level, so that the number of the audio stream data packets 12 temporarily stored by the Bluetooth sounding device 13 is greater than or equal to the level, as shown in FIG. 4 and FIG. As shown in the fourth interval D4 of the figure, wherein the solid line representing the number of packets is equal to or higher than the dotted line representing the level, the Bluetooth sounding device 13 continues to shorten the time interval T1 into the active state and increases the time interval T2 into the idle state. For example, the Bluetooth sounding device 13 can make the time interval T1 of the active state similar to the time interval T2 of the idle state to achieve the purpose of power saving.

Of course, the ratio of the above-mentioned Bluetooth sounding device 13 to the active state and the idle state is only an embodiment of the present invention, and is not a limitation of the scope of the present invention. For those having ordinary knowledge in the technical field to which the present invention pertains, the actual situation can be adjusted. The ratio of the active state to the idle state.

Although the embodiments of the present invention are disclosed above, it is not intended to limit the present invention, and those skilled in the art, regardless of the spirit and scope of the present invention, the shapes, structures, and features described in the scope of the present application. And the number of modifications may be made, and the scope of patent protection of the present invention shall be determined by the scope of the patent application attached to the specification.

Claims (10)

A method for dynamically adjusting a Bluetooth sounding device, wherein the Bluetooth sounding device is adapted to receive an audio stream data packet through Bluetooth, and the Bluetooth sounding device receives an active state and an idle state in the process of receiving the audio stream data packet. Switching between the two steps includes: counting the number of the audio stream data packets temporarily stored by the Bluetooth sounding device; and adjusting the Bluetooth sounding device to enter the number according to the number of the audio stream data packets temporarily stored by the Bluetooth sounding device The time interval of the active state and the time interval of entering the idle state. The dynamic adjustment method of claim 1, comprising the steps of: the Bluetooth sounding device enters the active state, and receives and temporarily stores the audio stream data packet. The dynamic adjustment method of claim 2, wherein the Bluetooth sounding device comprises a temporary storage unit for temporarily storing the received audio stream data packet. The dynamic adjustment method of claim 1, wherein the time interval in which the Bluetooth sounding device enters the active state is greater than or equal to a time interval of entering the idle state. The dynamic adjustment method of claim 1, comprising the step of: comparing the number of the audio stream data packets temporarily stored to the Bluetooth sounding device with a level. The dynamic adjustment method of claim 5, comprising the following steps: when the number of the audio stream data packets temporarily stored by the Bluetooth sounding device is less than the level, increasing the Bluetooth sounding device to enter the active state Time interval and reduce the time interval between the Bluetooth sounding device entering the idle state. The dynamic adjustment method according to claim 5, comprising the following steps: when the number of the audio stream data packets temporarily stored by the Bluetooth sounding device is greater than the level, reducing or maintaining the Bluetooth sounding device to enter the initiative The time interval of the state and increase or maintain the time interval between the Bluetooth sounding device entering the idle state. The dynamic adjustment method according to claim 1, comprising the following steps: the Bluetooth sounding device receives and temporarily stores the audio stream data packet by an electronic device. The dynamic adjustment method according to claim 8, wherein the Bluetooth sounding device enters The time interval of entering the active state is greater than or equal to the time interval during which the electronic device transmits the audio stream data packet. The dynamic adjustment method of claim 9, comprising the steps of: pairing the Bluetooth sounding device with the electronic device, and obtaining a time interval at which the electronic device transmits the audio stream data packet.