TWI443575B - Audio playback system and an attached earphone - Google Patents

Description

Audio playback system and its application headphones

The invention relates to an audio playing system and an earphone thereof, and particularly to an audio playing system and an earphone for applying the same.

The radio, MP3 player, CD player and other playback devices can output sound through the earphone. Among them, the control knob is set on the wire-controlled earphone to control the sound-emitting device, which makes the user's control more convenient. When the above-mentioned wire-controlled earphone is taken out from the head by the user, the sound-emitting device is still in the working state, and the user also needs to manually operate the wire-controlled switch on the earphone to control the sound-emitting device, which is not easy to operate.

In view of the above, it is necessary to provide an audio playback system that controls the operation state of the audio playback system by detecting the electrical signal generated when the headset is picked up or worn, and based on the detected electrical signal.

At the same time, it is necessary to provide an earphone including a waveform generating unit that generates a voltage waveform or a current waveform when the earphone is picked up or worn, and the audio system controls the audio system according to the detected voltage waveform or current waveform. Working status.

An audio playing system comprising an audio playing device and an earphone of the same, the audio playing device comprising an audio playing unit, a processing unit and a storage unit; the earphone comprising at least one earpiece and a circuit board and audio for communicating with the audio playing device interface The earphone further includes: a variable resistance unit electrically connected to the circuit board, the variable resistance unit being an elastic element and the resistance value is changed according to the elastic deformation thereof; and a waveform generation unit for using the resistance value of the variable resistance unit The change produces an analog current or voltage waveform; the audio playback device further includes a detection determining unit configured to detect the analog current or voltage waveform change process and determine whether the earphone is in use, and control the audio playback device according to the use state of the earphone Working status.

An earphone comprising at least one earpiece, a circuit board and an audio interface on an electrical connection circuit board, the earphone further comprising: a variable resistance unit electrically connected to the circuit board, which is an elastic element and a resistance value thereof occurs with the elastic element And the waveform generating unit is configured to generate a corresponding analog current or voltage waveform according to the change of the resistance value of the variable resistance unit; and the audio playback device electrically connected to the earphone determines whether the earphone is based on the analog current or voltage waveform In use.

The invention provides an elastic variable resistance unit on the earphone, and when the earphone is picked up or worn, the earphone generates an analog current waveform or an analog voltage waveform according to the resistance value change of the variable resistance unit, thereby controlling audio playback. The device is easy to open, close or pause.

1‧‧‧Audio playback system

11‧‧‧Audio playback device

10‧‧‧ headphones

7‧‧‧Variable resistance unit, coil spring resistance wire

6‧‧‧Audio interface

8‧‧‧ earpiece

9‧‧‧Circuit board

12‧‧‧ Waveform generating unit

71‧‧‧ spiral coil

101‧‧‧ headband

203‧‧‧Processing unit

204‧‧‧Audio playback unit

205‧‧‧ storage unit

202‧‧‧Detection and judgment unit

FIG. 1 is a schematic diagram of an audio playback system according to an embodiment of the present invention.

2 is a diagram of a headphone module of the music playing system application of FIG. 1.

3A is a perspective view of the earphone of FIG. 1 in an unused state.

Figure 3B is a partial cross-sectional view of the headband in an unused state of the earphone.

FIG. 3C is a perspective view showing the state of use of the earphone of FIG. 1. FIG.

Fig. 3D is a partial cross-section of the headband in the state of use of the earphone.

4 is an electrical property diagram of the variable resistance unit Ω-T in the embodiment.

FIG. 5 is a block diagram of the music playing system of FIG. 1.

The invention will be further described in detail below with reference to the accompanying drawings.

First embodiment

Referring to FIG. 1, the audio playback system 1 includes an audio playback device 11 and an earphone 10 for use with the audio playback device 11. The earphone 10 and the audio playback device 11 can communicate in a wired or wireless manner, and the wireless communication technology includes Bluetooth, infrared, and the like. In the present embodiment, the earphone is a headset and communicates with the audio playback device 11 in a wired manner.

Referring to FIG. 2, the headset 10 includes an audio interface 6, an earpiece 8, a circuit board 9, a variable resistance unit 7, and a waveform generating unit 12. The audio signal of the audio playback device 11 is transmitted to the circuit board 9 through the audio interface 6, and is sounded by the earpiece 8.

The waveform generating unit 12 is electrically connected to the circuit board 9, and the waveform generating unit 12 generates an analog voltage or current waveform in accordance with a change in the resistance value of the variable resistance unit 7, and transmits it to the audio playback device 11 through the audio interface 6.

Referring to FIG. 3, the variable resistance unit 7 is an elastic component, for example, a coil spring resistor. wire. In the present embodiment, the coil spring resistance wire 7 is disposed in the headband 101 of the headphone 10. When the headphone 10 is picked up or worn, the coil spring resistance wire 7 is concurrent with the headband 101. The elastic deformation is performed, and the spiral coils are electrically contacted or separated from each other to cause a change in the resistance value of the coil spring resistance wire 7.

Referring to FIG. 4 together, in the Ω-T electrical property map of the variable resistance unit 7, the c-segment on the time axis indicates that the headphone 10 is not in use, and the coil spring resistance wire 7 is not elastically deformed. The spiral coils 71 are in electrical contact with each other, and the resistance value thereof is a minimum value R2.

The a-segment on the time axis indicates the process in which the user puts on the headphone 10, and the coil spring resistance wire 7 is elastically deformed together with the headband 101, and the spiral coils 71 are gradually separated from each other, and the resistance of the coil spring resistance wire 7 is reversed. The value gradually increases to the maximum value R1.

The d-segment on the time axis indicates that the headphone 10 is always clamped to the user's head, and its resistance value is R1 and remains unchanged.

The b-segment on the time axis indicates that the resistance value of the coil spring resistance wire 7 changes when the headphone 10 is taken out, which is opposite to the change in the resistance value of the coil spring resistance wire 7 when the headphone 10 is worn.

The waveform generating unit 12 generates a corresponding analog current or voltage waveform in accordance with a change in the resistance value of the coil spring resistance wire 7. The audio playback device 11 determines whether the headset 10 is in use according to an analog current or voltage waveform. In the present embodiment, when it is detected that the analog current or voltage waveform is reduced and the first stable current or voltage value is reached, it is judged that the headphone 10 is in the use state. When it is detected that the analog current or voltage waveform increases and reaches the second stable current or voltage value, it is judged that the headset 10 is in an unused state.

In an embodiment, please refer to FIG. 5 together, which is a module diagram of the music playing system 1. The audio playback system 1 includes an audio playback device 11 including an audio playback unit 204, a processing unit 203, a storage unit 205, and a waveform generation unit 12 for generating an analog current or voltage waveform according to a change in the resistance value of the variable resistance unit 7. .

The audio playback system 1 further includes a detection determining unit 202 for detecting a change process of the analog current or voltage waveform generated by the waveform generating unit 12 and determining whether the headset 10 is in use, and according to the use of the headset 10 The state controls the operational state of the audio playback device 20. In other embodiments, the earphone is an in-ear earphone or earbud.

When the audio playback system 1 is used, when the earphone 10 is picked up or worn, the headset 10 generates an electrical waveform, and the audio playback system 1 determines whether the earphone 10 is used according to the electrical waveform, thereby controlling the audio playback device 11 Turning on, off, or pausing greatly improves the convenience of the audio playback system 1.

It should be understood by those skilled in the art that the above embodiments are only intended to illustrate the invention, and are not intended to limit the invention, as long as it is within the spirit of the invention. Changes and modifications are intended to fall within the scope of the invention.

10‧‧‧ headphones

7‧‧‧Variable Resistor Unit

6‧‧‧Audio interface

8‧‧‧ earpiece

9‧‧‧Circuit board

12‧‧‧ Waveform generating unit

Claims (6)

An audio playback system comprising an audio playback device and a headset for use thereof, the audio playback device comprising an audio playback unit, a processing unit and a storage unit; the headset comprising at least one earpiece and with an audio playback device The improved circuit board and the audio interface are improved in that the headset further comprises: a variable resistance unit electrically connected to the circuit board, the variable resistance unit being an elastic element and disposed in the headband of the headset The elastic member is elastically deformed as the head wears when the headset is removed or worn, and the resistance value of the elastic member changes as the elastic deformation thereof; and the waveform generating unit is configured to The change of the resistance value of the variable resistance unit generates an analog current or voltage waveform; the audio playback device further includes a detection determining unit configured to detect the analog current or voltage waveform change process and determine whether the headset is in use, and according to The state of use of the headset controls the operational state of the audio playback device. The audio playback system of claim 1, wherein when the detection determination unit detects that the analog current or voltage decreases and reaches the first stable current or voltage value, determining that the headset is in use; When the detection determination unit detects that the analog current or voltage increases and finally reaches the second stable current or voltage value, it is determined that the headset is in an unused state. The audio playback system of claim 1, wherein the variable resistance unit is a coil spring resistance wire and the spiral coils are electrically connected to each other in an initial state. contact. A headphone comprising at least one earpiece, a circuit board and an audio interface on an electrical connection circuit board, wherein the headphone further comprises: a variable resistance unit electrically connected to the circuit board, which is elastic The component is disposed in the headband of the headset, and the elastic component is elastically deformed with the headset when the headset is removed or worn, and the resistance value of the elastic component follows the elasticity The component is elastically deformed and changes; and a waveform generating unit is configured to generate a corresponding analog current or voltage waveform according to a change in the resistance value of the variable resistance unit; and an audio playback device electrically connected to the headset according to the analog current or The voltage waveform is used to determine if the headset is in use. The headset of claim 4, wherein when the analog current or analog voltage is reduced and reaches a first stable current or voltage value, indicating that the headset is in use; when the analogy When the current or analog voltage increases and finally reaches the second stable current or voltage value, the headset is indicated to be in an unused state. The headphone of claim 4, wherein the variable resistance unit is a coil spring resistance wire and the spiral coils thereof are in electrical contact with each other in an initial state.