Bluetooth antenna and touch sensing common area circuit device and Bluetooth earphone

Abstract

The utility model discloses a Bluetooth antenna and touch sensing common area circuit device and a Bluetooth earphone, comprising a single feeding point antenna arranged in a touch sensing area of the Bluetooth earphone; the signal output end of the single feeding point antenna is connected with the input end of the change-over switch; the signal receiving unit comprises a Bluetooth module, a touch sensing module and a control signal output end, the first output end of the change-over switch is connected with the input end of the Bluetooth module, the second output end of the change-over switch is connected with the input end of the touch sensing module, and the control signal output end is connected with the enabling end of the change-over switch. According to the utility model, the design that the Bluetooth antenna and the touch induction share the same area is adopted, so that the earphone space occupied by the Bluetooth antenna and the touch key can be effectively reduced, and the miniaturization of the Bluetooth earphone and the expansion of more functions are facilitated.

Description

Technical Field

[0001] The utility model relates to the field of Bluetooth earphones, in particular to a Bluetooth antenna and touch sensing common area circuit device and a Bluetooth earphone. Background Art

[0002] Bluetooth headsets, especially TWS headsets, have higher and higher requirements for space due to the increasing functional requirements. In current TWS headsets, the Bluetooth antenna and touch buttons are set separately. The Bluetooth antenna needs to occupy a part of the space on the headset, and the touch buttons also need to occupy a part of the space as the touch area. Due to the need to ensure the functional reliability of Bluetooth and touch, the space occupied by the Bluetooth antenna and the touch button cannot be too small, and because the metal part of the touch button will affect the antenna, it is also necessary to control the distance between the Bluetooth antenna area and the touch button area. As a result, the Bluetooth antenna and touch buttons occupy a large space in the headset, which is not conducive to the miniaturization of Bluetooth headsets and the expansion of more functions. Utility Model Content

[0003] The utility model aims to solve at least one of the technical problems existing in the prior art. To this end, the utility model proposes a Bluetooth antenna and touch sensing common area circuit device and a Bluetooth headset, which can reduce the headset space occupied by the Bluetooth antenna and touch buttons, and can ensure the functional reliability of Bluetooth and touch, which is conducive to the miniaturization of Bluetooth headsets and the expansion of more functions.

[0004] According to the first aspect of the utility model, a Bluetooth antenna and touch sensing co-region circuit device is used for a Bluetooth headset, comprising: a single feeding point antenna, the single feeding point antenna is arranged in the touch sensing area of ​​the Bluetooth headset; a switching switch, the signal output end of the single feeding point antenna is connected to the input end of the switching switch; a signal receiving unit, the signal receiving unit comprises a Bluetooth module, a touch sensing module and a control signal output end, the first output end of the switching switch is connected to the input end of the Bluetooth module, the second output end of the switching switch is connected to the input end of the touch sensing module, and the control signal output end is connected to the enable end of the switching switch for controlling the switching switch to switch the Bluetooth channel and the touch sensing channel.

[0005] According to the first aspect of the present invention, the Bluetooth antenna and touch sensing common area circuit device has at least the following features:

[0006] Beneficial effects:

[0007] The embodiment of the utility model sets a single feed point antenna in the touch sensing area of ​​the Bluetooth headset as a touch sensing button. The single feed point antenna is connected to the Bluetooth module and the touch sensing module respectively through a switching switch to form two channels, the Bluetooth channel and the touch sensing channel. The switching switch realizes rapid switching between the two channels by receiving the control signal output terminal, so that the Bluetooth module and the touch sensing module can normally receive their respective functional signals. The utility model adopts the design of the Bluetooth antenna and the touch sensing area, and the switching switch realizes the switching of the Bluetooth channel and the touch sensing channel, which can effectively reduce the headset space occupied by the Bluetooth antenna and the touch button, and can ensure the functional reliability of Bluetooth and touch, which is conducive to the miniaturization of Bluetooth headsets and the expansion of more functions.

[0008] According to some embodiments of the present invention, the control signal output terminal is arranged on the Bluetooth module.

[0009] According to some embodiments of the present invention, the control signal output terminal is arranged on the touch sensing module.

[0010] According to some embodiments of the present invention, the single feed point antenna is a single-pole antenna.

[0011] According to the Bluetooth headset of the embodiment of the second aspect of the utility model, the Bluetooth headset is provided with the above-mentioned Bluetooth antenna and touch sensing common area circuit device.

[0012] The Bluetooth headset according to the second embodiment of the utility model has at least the following beneficial effects:

[0013] The embodiment of the utility model sets a single feed point antenna in the touch sensing area of ​​the Bluetooth headset as a touch sensing button. The single feed point antenna is connected to the Bluetooth module and the touch sensing module respectively through a switching switch to form two channels, the Bluetooth channel and the touch sensing channel. The switching switch realizes rapid switching between the two channels by receiving the control signal output terminal, so that the Bluetooth module and the touch sensing module can normally receive their respective functional signals. The utility model adopts the design of the Bluetooth antenna and the touch sensing area, and the switching switch realizes the switching of the Bluetooth channel and the touch sensing channel, which can effectively reduce the headset space occupied by the Bluetooth antenna and the touch button, and can ensure the functional reliability of Bluetooth and touch, which is conducive to the miniaturization of Bluetooth headsets and the expansion of more functions.

[0014] According to the Bluetooth headset of the embodiment of the second aspect of the utility model, the Bluetooth headset is a TWS Bluetooth headset.

[0015] Additional aspects and advantages of the present invention will be given in part in the following description, and in part will become apparent from the following description, or will be learned through the practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention is further described below with reference to the accompanying drawings and embodiments, wherein:

[0017] Figure 1 This is a principle block diagram of a Bluetooth antenna and a touch sensing common area circuit device in an embodiment of the utility model;

[0018] Figure 2 This is a circuit schematic diagram of a Bluetooth antenna and touch sensing common area circuit device in an embodiment of the utility model;

[0019] Figure 3a A schematic diagram of Bluetooth channel connectivity in an embodiment of the present utility model;

[0020] Figure 3b This is a schematic diagram of the connection of the touch sensing channels in the embodiment of the utility model;

[0021] Figure 4 Schematic diagram of the Bluetooth antenna in the embodiment of the utility model.

[0022] Figure Number:

[0023] Monopole antenna 100 . DETAILED DESCRIPTION

[0024] The embodiments of the present invention are described in detail below, and examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0025] In the description of the present invention, it should be understood that the descriptions involving orientation, such as the orientation or positional relationship indicated as up, down, etc., are based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present invention.

[0026] In the description of the present utility model, "a plurality" means more than two. If there is a description of "first" or "second", it is only for the purpose of distinguishing the technical features, and cannot be understood as indicating or implying the relative importance or implicitly indicating the number of the indicated technical features or implicitly indicating the order of the indicated technical features.

[0027] In the description of the present invention, unless otherwise clearly defined, terms such as setting, installing, connecting, etc. should be understood in a broad sense, and technicians in the relevant technical field can reasonably determine the specific meanings of the above terms in the present invention based on the specific content of the technical solution.

[0028] Reference Figure 1 As shown, a circuit device for a Bluetooth antenna and a touch sensing common area is used for a Bluetooth headset, comprising: a single feed point antenna, a switch and a signal receiving unit. The single feed point antenna is arranged in the touch sensing area of ​​the Bluetooth headset, and the signal output end of the single feed point antenna is connected to the input end of the switch; the signal receiving unit comprises a Bluetooth module, a touch sensing module and a control signal output end, the first output end of the switch is connected to the input end of the Bluetooth module, the second output end of the switch is connected to the input end of the touch sensing module, and the control signal output end is connected to the enable end of the switch to control the switch to switch between the Bluetooth channel and the touch sensing channel.

[0029] It should be noted that the single-feed point antenna in the embodiment of the present utility model refers to an antenna with only one feed pin. Figure 4 As shown, the single-feed point antenna in the embodiment of the utility model is a single-stage antenna 100, and other antennas with only one feed pin may also be used. It should be noted that setting the single-feed point antenna in the touch sensing area of ​​the Bluetooth headset means that the antenna itself is used as a touch sensing button, that is, the antenna and the touch sensing button are combined together.

[0030] The single feeding point antenna is connected to the Bluetooth module and the touch sensing module respectively through a switching switch. It should be understood that the switching switch in this application is a one-input and two-output switch module. The single feeding point antenna forms two paths, namely the Bluetooth channel and the touch sensing channel, with the Bluetooth module and the touch sensing module respectively through the switching switch, and the switching of the two channels is realized through the received control signal.

[0031] It should be noted that the control signal output terminal in the signal receiving unit in the embodiment of the utility model is used to output a control signal to control the switching of the switch. The control signal output terminal can be set on the Bluetooth module or on the touch sensing module.

[0032] The following describes the working principle of the present invention in detail by taking the control signal output terminal being set on the Bluetooth module as an example:

[0033] Exemplary, reference Figure 2 As shown, in the embodiment of the utility model, Switch is a switching switch, BTSOC is a Bluetooth module, TouchIC is a touch sensing module, the Antenna port of Switch is connected to BTSOC, the Touch port of Switch is connected to TouchIC, the GPIO1 port on BTSOC is connected to the EN port of Switch as a control signal output terminal, the KEY port of TouchIC is connected to the GPIO2 port of BTSOC, and BTSOC outputs high and low levels through the GPIO1 port to achieve switching between the Bluetooth channel and the touch sensing channel.

[0034] It should be noted that the control logic of the above embodiment is:

[0035] refer to Figure 3a As shown in the figure, when the GPIO1 port is at a high level, the Bluetooth channel is connected and the touch sensing channel is disconnected. At this time, the signal flow is: antenna-->Switch-->Btsoc;

[0036] refer to Figure 3b As shown in the figure, when the GPIO 1 port is at a low level, the touch sensing channel is connected and the Bluetooth channel is disconnected. At this time, the signal flow is: antenna-->Switch-->TouchIC.

[0037] It should be noted that the switching of the Switch in the above embodiment is controlled by the BTSOC, and the switching of the Bluetooth channel and the touch sensing channel is realized by time-division multiplexing. The specific control logic is:

[0038] BTSOC controls Switch to use the Bluetooth time slot to switch between the two channels at a regular interval. In this application, the Bluetooth time slot is 625us. When switching to the touch sensing channel, if there is a touch action, the KEY port of the touch IC outputs a low level to the GPIO2 port of the BT SOC. The GPIO2 port of the BT SOC receives the low level, indicating that a key is pressed. At this time, BTSOC controls GPIO 1 to output a low level, the touch sensing channel is connected, and the Bluetooth channel is disconnected to process key matters. If the level remains high, it means that no key is pressed. During the time slot, BTSOC controls Switch to switch to the Bluetooth antenna channel.

[0039] It should be understood that the above embodiment is only one implementation method of setting the control signal output terminal on the Bluetooth module. When the control signal output terminal is set on the touch sensing module, the touch IC serves as a control module for controlling the Switch switching. Its implementation method and principle are the same as those of the BTSOC, and its working process will not be repeated here.

[0040] The utility model also relates to a Bluetooth headset, on which the Bluetooth antenna and touch sensing common area circuit device described in the above embodiment is arranged.

[0041] Among them, the Bluetooth headset in the utility model is a TWS Bluetooth headset, and of course it can also be adapted to other types of Bluetooth headsets.

[0042] The embodiment of the utility model sets a single feed point antenna in the touch sensing area of ​​the Bluetooth headset as a touch sensing button. The single feed point antenna is connected to the Bluetooth module and the touch sensing module respectively through a switching switch to form two channels, the Bluetooth channel and the touch sensing channel. The switching switch realizes rapid switching between the two channels by receiving the control signal output terminal, so that the Bluetooth module and the touch sensing module can normally receive their respective functional signals. The utility model adopts the design of the Bluetooth antenna and the touch sensing area, and the switching switch realizes the switching of the Bluetooth channel and the touch sensing channel, which can effectively reduce the headset space occupied by the Bluetooth antenna and the touch button, and can ensure the functional reliability of Bluetooth and touch, which is conducive to the miniaturization of Bluetooth headsets and the expansion of more functions.

[0043] The embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited to the above embodiments, and various changes can be made within the knowledge scope of ordinary technicians in the relevant technical field without departing from the purpose of the present invention.

Claims

1. A Bluetooth antenna and touch sensing common area circuit device, used for a Bluetooth headset, characterized in that: include: A single feed point antenna, wherein the single feed point antenna is arranged in a touch sensing area of ​​the Bluetooth headset; A switching switch, wherein the signal output end of the single feeding point antenna is connected to the input end of the switching switch; A signal receiving unit, the signal receiving unit includes a Bluetooth module, a touch sensing module and a control signal output end, the first output end of the switching switch is connected to the input end of the Bluetooth module, the second output end of the switching switch is connected to the input end of the touch sensing module, and the control signal output end is connected to the enable end of the switching switch to control the switching switch to switch the Bluetooth channel and the touch sensing channel.

2. The Bluetooth antenna and touch sensing shared area circuit device according to claim 1, characterized in that: The control signal output terminal is arranged on the Bluetooth module, and the touch sensing module is connected to the Bluetooth module.

3. The Bluetooth antenna and touch sensing shared area circuit device according to claim 1, characterized in that: The control signal output terminal is arranged on the touch sensing module.

4. The Bluetooth antenna and touch sensing shared area circuit device according to claim 1, characterized in that: The single feed point antenna is a single-pole antenna.

5. A Bluetooth headset, characterized in that: The Bluetooth headset is provided with a Bluetooth antenna and a touch sensing common area circuit device as described in any one of claims 1 to 4.

6. The Bluetooth headset according to claim 5, characterized in that: The Bluetooth headset is a TWS Bluetooth headset.

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