CN205305074U - Earphone with buffer memory function - Google Patents
Earphone with buffer memory function Download PDFInfo
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- CN205305074U CN205305074U CN201521134283.5U CN201521134283U CN205305074U CN 205305074 U CN205305074 U CN 205305074U CN 201521134283 U CN201521134283 U CN 201521134283U CN 205305074 U CN205305074 U CN 205305074U
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Abstract
The utility model relates to an earphone with buffer memory function, including be used for with terminal connection's USB interface, the control unit, memory, be connected detecting element, digital analog converter, speaker, and for the battery with the upper -part power supply, wherein: the differential signal line of USB interface with the control unit's signal input part corresponds and connects, the USB interface through connect detecting element with the control unit connects, the control unit passes through digital analog converter with the speaker is connected, the control unit with the memory is connected. The utility model discloses an it can the buffer memory to set up that memory chip has realized when normal use, music in the buffer memory can be broadcast during with terminal disconnect to the earphone.
Description
Technical field
This utility model relates to a kind of earphone, more specifically, this utility model relates to a kind of earphone with caching function.
Background technology
When using earphone to listen to music, if owing to maloperation causes that earphone and terminal disconnect, then can cause that music stops playing, inconvenient. Existing earphone does not support that earphone continues when disconnecting with terminal to play music, it is therefore desirable to a kind of new earphone with caching function, and solving existing earphone can not the problem of buffer memory.
Utility model content
One purpose of this utility model embodiment be to provide a kind of support with terminal disconnect after remain to continue play music the head circuit with caching function.
According to an aspect of the present utility model, a kind of earphone with caching function is provided, it is characterized in that, including the USB interface for being connected with terminal, control unit, memorizer, digital to analog converter, speaker and the battery for powering with upper-part, wherein: the differential signal line of described USB interface is corresponding with the signal input port of described control unit to be connected; Described USB interface is connected with described control unit by connecting detection unit; Described control unit is connected with described speaker by described digital to analog converter; Described control unit is connected with described memorizer.
Preferably, described earphone also includes the first manostat, and the voltage output end of described first manostat is connected with the voltage input end of described control unit, and the voltage input end of described first manostat is connected with the positive pole of described battery.
Preferably, the voltage input end of described first manostat is connected with the power line of described USB interface.
Preferably, described connection detects the sampling resistor that unit includes being connected between the power line of described USB interface and the ground wire of described USB interface, and the sampled point of described connection detection unit is connected with the detection signal input part of described control unit.
Described connection detects two sampling resistors that unit includes being connected in series between the power line of described USB interface and the ground wire of described USB interface, and the dividing point between said two sampling resistor is connected with the detection signal input part of described control unit as described sampled point.
Preferably, described earphone also includes the second manostat, and the voltage output end of described second manostat is connected with the reference voltage end of described digital to analog converter.
Preferably, described control unit chip is MSP430G2553 chip.
Preferably, described digital to analog converter is TLV5618 chip.
Preferably, described memorizer is 24C16 chip.
Preferably, described control unit is MSP430G2553 chip, described digital to analog converter is TLV5618 chip, described memorizer is 24C16 chip, differential signal line (the D+ of described USB interface, D-) respectively with described MSP430G2553 chip as described in first I/O pin (P1.1) of signal input part and the second I/O pin (P1.0) is corresponding connects, the 3rd of described MSP430G2553 chip, 4th, 5th I/O pin (P1.7, P1.6, P2.5) respectively with the data-out pin (DIN) of described TLV5618 chip, Clock Signal pin (SCLK) and strobe pin (CS) connect, the 5th of described MSP430G2553 chip, 6th, 7th I/O pin (P2.0��P2.2) respectively with the write-protect pin (WP) of described 24C16 chip, Clock Signal pin (SCL) and data wire (SDA) connect, data output pins (the OUTA of described TLV5618 chip, OUTB) it is connected with described speaker.
One of the present utility model has technical effect that, the earphone with caching function of the present utility model can buffer memory by arranging that storage chip achieves when normal use, music in buffer memory can be play, thus improve the experience of earphone when earphone disconnects with terminal.
By referring to the accompanying drawing detailed description to exemplary embodiment of the present utility model, further feature of the present utility model and advantage thereof will be made apparent from.
Accompanying drawing explanation
The accompanying drawing of the part constituting description describes embodiment of the present utility model, and is used for together with the description explaining principle of the present utility model.
Fig. 1 is a kind of frame principle figure implementing structure of the earphone according to this utility model with caching function.
Fig. 2 is the circuit theory diagrams of a kind of embodiment of the earphone according to this utility model with caching function.
Detailed description of the invention
Of the present utility model various exemplary embodiment is described in detail now with reference to accompanying drawing. It should also be noted that unless specifically stated otherwise, the parts otherwise set forth in these embodiments and positioned opposite, the numerical expression of step and numerical value are not intended to scope of the present utility model.
Description only actually at least one exemplary embodiment is illustrative below, never as any restriction to this utility model and application or use.
The technology and equipment that person of ordinary skill in the relevant is known is likely to be not discussed in detail, but in the appropriate case, described technology and equipment should be considered a part for description.
Shown here with in all examples discussed, any occurrence should be construed as merely exemplary, not as restriction. Therefore, other example of exemplary embodiment can have different values.
It should also be noted that similar label and letter below figure represent similar terms, therefore, once a certain Xiang Yi accompanying drawing is defined, then it need not be further discussed in accompanying drawing subsequently.
This utility model is in order to after solving to disconnect with terminal in existing earphone, it is impossible to the problem continuing to play music, it is provided that the earphone with caching function after a kind of improvement.
As depicted in figs. 1 and 2, this earphone includes usb 10, control unit 20, memorizer 30, digital to analog converter 40, speaker 50, connects detection unit 60 and battery (not shown in figure 1).The differential signal line of usb 10 is corresponding with the signal input port stating control unit 20 to be connected, control unit 20 is connected with speaker 50 by digital to analog converter 40, control unit 20 is connected with memorizer 30, and usb 10 is connected with control unit 20 by connecting detection unit 60.
Wherein, usb 10 includes two power lines and two differential signal lines, and two power lines include positive source line VCC and power ground GND, and two differential signal lines include positive voltage signal line D+ and negative voltage signal line D-. Carrying out buffer memory or broadcasting owing to pass through control unit 20 from usb 10 incoming data, therefore two differential signal lines of usb 10 need to be connected with the I/O pin of control unit 20.
The data wire SDA and clock cable SCL of memorizer 30 constitutes data/address bus, is connected with the I/O pin of control unit 20, and controls read-write by write-protect pin WP, makes control unit 20 can pass through memorizer 30 and accesses data.
Connecting the sampling resistor that detection unit 60 can include being connected between the power line of usb 10 and the ground wire of usb 10, the sampled point connecting detection unit 60 is connected with the detection signal input part of control unit 20.
Connecting two sampling resistors that detection unit 60 can also include being connected in series between the power line of USB interface and the ground wire of USB interface, the dividing point between two sampling resistors is connected with the detection signal input part of control unit as sampled point. The resistance of R1 and R2 is 1000 �� in the embodiment shown in Figure 2. Connect one end ground connection of measuring unit 60, the other end is connected with the I/O pin P1.2 of control unit, so when usb 10 disconnects with external equipment, the branch road at R2 place is open circuit, the I/O port of control unit 20 detects the loss of voltage at R2 two ends, disconnects with the connection that this judges usb 10 and external equipment. Similarly, if the voltage that the I/O port of control unit 20 detects R2 two ends exists, then it is judged as that usb 10 is in connection status.
In digital to analog converter 40, data input pin DIN is connected with the I/O pin of control unit 20, and data output end OUTA is connected with data output end OUTB and two speaker 50, and strobe pin CS and Clock Signal pin SCLK is connected with the I/O pin of control unit 20. So when control unit 20 output digit signals, analogue signal can be converted to by digital to analog converter 40, speaker 50 plays back.
Speaker 50 can include left channel loudspeaker 50L and right channel loudspeaker 50R, is used for playing speech simulation signal.
In one embodiment, control unit can use MSP430G2553 chip, and digital to analog converter 40 can use TLV5618 chip, and memorizer is 24C16 chip. in this case, control unit is MSP430G2553 chip, digital to analog converter 40 is TLV5618 chip, memorizer is 24C16 chip, the differential signal line D+ of USB interface, D-respectively with described MSP430G2553 chip as described in the I/O pin P1.1 and I/O pin P1.0 of signal input part is corresponding connects, the I/O pin P1.7 of MSP430G2553 chip, P1.6, P2.5 respectively with the data-out pin DIN of TLV5618 chip, Clock Signal pin SCLK and strobe pin CS connects, I/O pin P2.0��the P2.2 of MSP430G2553 chip respectively with the write-protect pin WP of 24C16 chip, Clock Signal pin SCL and data wire SDA connects, the data output pins OUTA of TLV5618 chip, OUTB is connected with speaker 50.
The earphone with caching function of the present utility model can also include the first manostat 70 being provided that 3.3V burning voltage, and its voltage output end Vout is connected with the voltage input end DVCC of control unit 20, provides burning voltage for control unit 20. Its voltage input end Vin is connected with the positive pole of battery, and be connected with the power line of usb 10, so, when usb 10 disconnects with external equipment, battery can pass through the first manostat and be connected with the power input of control unit 20, thus providing power supply for circuit. On the other hand, when usb 10 is connected with external equipment, external equipment can be battery charging by USB interface.
Earphone of the present utility model can also include the second manostat 80 being provided that 1.024V burning voltage, and its voltage input end Vout is connected with the voltage input end VDD of digital to analog converter 40, provides burning voltage for digital to analog converter 40. Wherein the first manostat 80 can be LM1117 family chip.
Earphone is when normally using, and by control unit 20 buffer memory in memory 30, these part data include the information such as voice data and currently playing progress to a part of data. Another part data are play by speaker.
In one embodiment, namely when the connection with terminal of earphone disconnects, battery is that circuit is powered, by connecting detection unit 60, control unit 20 judges that connection disconnects, specifically, it is simply that is that low level determines that connection disconnects by control unit 20 with the level being connected the I/O pin that detection unit connects. Reading cache data from memorizer 30, and be converted to analogue signal play back by speaker by digital to analog converter 40. Thus achieving user when accidentally extracting earphone, speaker plays the effect of the audio-frequency information in buffer memory, decreases the inconvenience that user brings because of maloperation.
In another embodiment, when namely earphone is set up with terminal and is connected, control unit 20 detects when the usb 10 of earphone is connected with terminal, and the voice data transmission to the terminal that obtain buffer memory from memorizer 30 carry out unloading. Thus achieve user when the earphone extracted is inserted another terminal, the information of buffer memory is uploaded in the terminal connected again by usb signal line, add the convenience using earphone listening to audio.
It is to be understood that when earphone disconnects with terminal, control unit 20 changes audio data source by control signal, by the data playback in memorizer 30 out. And earphone is when connecting terminal, data cached in memorizer 30 can be sent to terminal by control unit 20 by usb 10.
So of design has the technical effect that earphone can continue to play the voice data in buffer memory when due to operational error, user causes that earphone disconnects with terminal. And when earphone inserts a terminal, it is possible to the data in buffer memory are sent to terminal so that other terminals without this audio-frequency information also are able to play.
Although specific embodiments more of the present utility model being described in detail already by example, but it should be appreciated by those skilled in the art, above example is merely to illustrate, rather than in order to limit scope of the present utility model. It should be appreciated by those skilled in the art, when without departing from scope and spirit of the present utility model, above example can be modified. Scope of the present utility model is defined by the following claims.
Claims (10)
1. an earphone with caching function, it is characterised in that include the USB interface for being connected, control unit, memorizer, connection detection unit, digital to analog converter, speaker and the battery for powering with upper-part with terminal, wherein:
The differential signal line of described USB interface is corresponding with the signal input part of described control unit to be connected;
Described USB interface is connected with described control unit by the described detection unit that connects;
Described control unit is connected with described speaker by described digital to analog converter;
Described control unit is connected with described memorizer.
2. earphone according to claim 1, it is characterised in that also include:
First manostat, the voltage output end of described first manostat is connected with the voltage input end of described control unit, and the voltage input end of described first manostat is connected with the positive pole of described battery.
3. earphone according to claim 2, it is characterised in that
The voltage input end of described first manostat is connected with the power line of described USB interface.
4. earphone according to claim 1, it is characterised in that
Described connection detects the sampling resistor that unit includes being connected between the power line of described USB interface and the ground wire of described USB interface, and the sampled point of described connection detection unit is connected with the detection signal input part of described control unit.
5. earphone according to claim 4, it is characterised in that
Described connection detects two sampling resistors that unit includes being connected in series between the power line of described USB interface and the ground wire of described USB interface, and the dividing point between said two sampling resistor is connected with the detection signal input part of described control unit as described sampled point.
6. earphone according to claim 1, it is characterised in that also include:
Second manostat, the voltage output end of described second manostat is connected with the reference voltage end of described digital to analog converter.
7. earphone according to claim 1, it is characterised in that described control unit is MSP430G2553 chip.
8. earphone according to claim 1, it is characterised in that described digital to analog converter is TLV5618 chip.
9. earphone according to claim 1, it is characterised in that described memorizer is 24C16 chip.
10. earphone according to claim 1, it is characterized in that, described control unit is MSP430G2553 chip, described digital to analog converter is TLV5618 chip, described memorizer is 24C16 chip, differential signal line (the D+ of described USB interface, D-) respectively with described MSP430G2553 chip as described in first I/O pin (P1.1) of signal input part and the second I/O pin (P1.0) is corresponding connects, the 3rd of described MSP430G2553 chip, 4th, 5th I/O pin (P1.7, P1.6, P2.5) respectively with the data-out pin (DIN) of described TLV5618 chip, Clock Signal pin (SCLK) and strobe pin (CS) connect, the 5th of described MSP430G2553 chip, 6th, 7th I/O pin (P2.0��P2.2) respectively with the write-protect pin (WP) of described 24C16 chip, Clock Signal pin (SCL) and data wire (SDA) connect, data output pins (the OUTA of described TLV5618 chip, OUTB) it is connected with described speaker.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521134283.5U CN205305074U (en) | 2015-12-30 | 2015-12-30 | Earphone with buffer memory function |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521134283.5U CN205305074U (en) | 2015-12-30 | 2015-12-30 | Earphone with buffer memory function |
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| Publication Number | Publication Date |
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| CN205305074U true CN205305074U (en) | 2016-06-08 |
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| CN201521134283.5U Active CN205305074U (en) | 2015-12-30 | 2015-12-30 | Earphone with buffer memory function |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106484638A (en) * | 2016-09-08 | 2017-03-08 | 北京小米移动软件有限公司 | Digital accessory and data handling system |
| CN108268389A (en) * | 2016-12-30 | 2018-07-10 | 维沃移动通信有限公司 | The insertion detection method and mobile terminal of a kind of equipment |
-
2015
- 2015-12-30 CN CN201521134283.5U patent/CN205305074U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106484638A (en) * | 2016-09-08 | 2017-03-08 | 北京小米移动软件有限公司 | Digital accessory and data handling system |
| CN108268389A (en) * | 2016-12-30 | 2018-07-10 | 维沃移动通信有限公司 | The insertion detection method and mobile terminal of a kind of equipment |
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Address after: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee after: Goertek Inc. Address before: 261031 Dongfang Road, Weifang high tech Development Zone, Shandong, China, No. 268 Patentee before: Goertek Inc. |