KR101640946B1

KR101640946B1 - Receiver device

Info

Publication number: KR101640946B1
Application number: KR1020100016637A
Authority: KR
Inventors: 오정택; 이민형
Original assignee: 삼성전자주식회사
Priority date: 2010-02-24
Filing date: 2010-02-24
Publication date: 2016-07-19
Also published as: KR20110097028A

Abstract

The present invention relates to a receiver system including a portable receiver and a device for delivering audio signals to a portable receiver, the receiver system comprising a wire comprising a first core wire and a second core wire, a sensor, A first transformer for transmitting an audio signal transmitted through the wire to the speaker unit; and a converter for outputting the sensor signal by outputting a current corresponding to the sensor signal generated by the sensor to the speaker unit, A DC power supply unit for adding a DC voltage between the first core wire and the second core wire, a second transformer positioned at a front end of the processor and transmitting the sensor signal transmitted through the wire to the processor, And outputting a current corresponding to the audio signal to the wire, And a processor for outputting a digital signal.

Description

RECEIVER DEVICE

The present invention relates to a receiver system including a portable receiver and a device for delivering audio signals to the portable receiver, and more particularly to a receiver system including a portable receiver with a sensor.

A receiver in a sound device is a device that converts electrical vibration into acoustic vibration, which means devices that can be heard directly in the ear. Examples of receivers are typically earphones, headphones, headsets, and the like. These receivers are becoming increasingly popular as various portable devices, such as mobile phones, MP 3 players, PMPs, etc., become popular.

Current portable devices are being developed in a form that provides a plurality of additional functions, rather than one particular function. For example, in addition to a basic telephone call function, a mobile phone provides a variety of additional functions such as wireless data communication, short-range wireless communication, music file playback, video file playback, DMB (Digital Multimedia Broadcasting) .

It is also configured to provide additional functions using peripheral devices of portable devices. For example, a body temperature sensor is attached to a speaker unit such as a housing or a ear pad of a receiver, and an audio signal is outputted through a speaker and a body temperature of the body is measured. Thus, . Alternatively, a sensor and a sensor capable of detecting contact with the body may be mounted on the speaker unit, so that a device and a receiver can be configured to detect whether or not the speaker is detached from the ear.

As described above, portable devices that output audio information through a speaker and provide an additional function using peripheral information collected through a sensor by mounting various sensors to the receiver have been developed. In the following description, a system including a receiver equipped with a sensor and a device connected to the receiver and outputting an audio signal to the receiver and providing a function using data collected by the sensor is referred to as a receiver system.

Since a typical receiver only carries audio signals, the wires connecting the speaker of the receiver and the device are made up of two cores. However, when the receiver is provided with a sensor, a connection line for applying the sensor driving power and ground, and a communication line for the sensor signal line or the sensor are additionally required.

Figs. 1, 2A, and 2B are diagrams showing a configuration of an earphone that reflects such a need, and show a receiver system including various earphones and a handset.

1 is a configuration diagram of a receiver system including an earphone 11 and a handset 13 having an analog sensor. Referring to FIG. 1, as the analog sensor is inserted, the number of cores of the earphone wire 12 is divided into at least four cores (sound +, sound-, Vcc, GND) for audio signal transmission and sensor voltage application, Is determined by the sum of the communication lines corresponding to the number. Accordingly, the earphone wire 12 includes at least five cores.

2A and 2B, the number of core wires included in the earphone wires 22 and 32 varies depending on a communication method in the case of earphones 21 and 31 having a digital sensor. 2A, when the I ² C (Inter-Integrated Circuit) communication method is used, the earphone wire 22 includes at least 7 core wires. If the SPI (Serial Peripheral Interface) communication method is used as shown in FIG. 2B, The earphone wire 32 includes at least eight core wires.

As described above, when a wired receiver having an actual sensor is implemented, the diameter of the wire connecting the speaker unit and various devices increases due to an increase in the number of spikes, which is visually unfavorable. There is a problem that it is caused.

In order to solve the above problems, the present invention provides a receiver system including a receiver in which a wire connecting a speaker unit and a device is composed of two core wires even when the receiver is mounted with a sensor.

According to the present invention, there is provided a receiver including a sensor, wherein a core wire of the wire connecting the speaker unit and the device is limited to two, a music signal is transmitted to the speaker unit, a power is supplied to the sensor, Providing a possible receiver system.

Further, the present invention provides a receiver system that can prevent user discomfort by configuring a wire similar to a general receiver even when the receiver has a sensor.

A receiver system according to the present invention includes a wire including a first core wire and a second core wire, a sensor, a first transformer positioned in front of the speaker unit and transmitting an audio signal transmitted through the wire to the speaker unit, And a converter for outputting the sensor signal by outputting a current corresponding to the sensor signal generated by the sensor with the wire; and a DC converter for adding a DC voltage between the first core wire and the second core wire, A second transformer positioned at a front end of the processor and transmitting the sensor signal transmitted through the wire to the processor; and a controller for processing the sensor signal and outputting a current corresponding to the audio signal to the wire, And a processor for outputting an audio signal.

In a receiver having a sensor, a core wire of a wire connecting a ear speaker and a plug is limited to two, and music signal transmission to a speaker, power supply to a sensor, and device transmission of a sensor signal are enabled. Accordingly, the present invention can prevent user inconvenience.

Figures 1, 2A, and 2B illustrate a typical receiver system,
3-7 illustrate a receiver system in accordance with an embodiment of the present invention.

Hereinafter, a preferred embodiment of the present invention will be described in detail with reference to the accompanying drawings. It is to be noted that the same components in the drawings are denoted by the same reference numerals and symbols as possible even if they are shown in different drawings. In the following description of the present invention, a detailed description of known functions and configurations incorporated herein will be omitted when it may make the subject matter of the present invention rather unclear.

According to the present invention, a receiver mounts a sensor and provides an audio signal to a user, and measures a user's physical condition, momentum, or various surrounding environments through a sensor and transmits the measurement result to a device. At this time, the core of the wire connecting the speaker unit of the receiver and the corresponding device is limited to two, and the audio signal to the speaker unit, the power supply to the sensor, and the device signal transmission of the sensor signal are made possible through two core wires. The receiver may be, for example, an earphone, a headphone, a headset, or the like, and the device may be, for example, a mobile phone, an MP 3 player, a PMP, or a PDP. The present invention is applicable to such various receivers and devices.

The wire connecting the receiver and the device according to the present invention includes two core wires. The device adds a DC voltage between the power supply and the two core wires for bidirectional signal transmission corresponding to the audio signal and the sensor signal, respectively. The device then inputs an audio signal current proportional to the audio signal in a transmission loop to deliver the audio signal to the receiver.

Conversely, the receiver inputs the sensor signal current proportional to the sensor signal into the transmission loop. The receiver has a transformer at the front end of the speaker unit so that the audio signal current delivered from the device is transmitted to the speaker unit.

The device also includes a transformer for leading the sensor signal in front of an analog to digital converter (ADC) for the sensor signal, so that the sensor signal current is transmitted to the processor of the device so that the sensor signal can be processed by the processor.

Examples of the configuration of the receiver system including the receiver and the device according to the embodiment of the present invention are shown in Figs. 3 to 7 illustrate a case where an earphone is used as an example of a receiver to which the present invention is applied in order to facilitate understanding of the present invention.

3 is a configuration diagram of a receiver system according to an embodiment of the present invention when the earphone is equipped with an analog sensor. Referring to FIG. 3, the earphone wire 120 includes a first core wire 121 and a second core wire 122.

The device 130 includes a noise filter unit 200, a DC power supply unit 240, an ADC (Analog to Digital Converter) 220, a device transformer 230, and a processor 210.

The DC power supply unit 240 is located at the rear end of the earphone wire 120 at a position where the earphone wire 120 and the device are connected to each other and applies a DC voltage between the two core wires 121 and 122 of the earphone wire 120. The sensor signal current Iacc and the audio signal current Iss can flow in both directions by a circuit configured by symmetry of the earphone 110 and the device 130 and a DC power source added to the symmetry point. That is, when the sensor signal current Iss or the sensor signal current Iacc is generated, the voltage balance between the earphone 110 held by the DC power supply unit 240 and the device 130 is broken, and accordingly, .

The DC power supply unit 240 supplies power to the sensor 270.

The noise filter unit 200 composed of two inductors 201 and 202 removes power source noise of the DC power source unit 240.

The device transformer 230 is located at the front end of the ADC 220 and transfers the sensor signal current Iacc transmitted through the earphone wire 120 to the ADC 220. At this time, both ends of the primary coil of the device transformer 230 are connected to the first core wire 121 and the second core wire 122 of the earphone wire 110, and both ends of the secondary coil are connected to the ADC 220 .

The ADC 220 converts the sensor signal current Iacc, which is an analog signal, transmitted from the device transformer 230 into a digital signal, and outputs the digital signal to the processor 210.

The processor 210 analyzes and processes the sensor signal input from the ADC 220 to cause the corresponding function to be executed and output an audio signal current Iss proportional to the audio signal. The audio signal current Iss passes through the primary coil of the device transformer 230 to the earphone wire 120 and is transmitted to the earphone 110.

The earphone 110 includes a speaker unit 290, an earphone transformer 250, a sensor 270, a conversion unit 260, and a DC transformer 280.

The earphone transformer 250 is located at the front end of the speaker unit 290 and transmits the audio signal current Iss delivered through the earphone wire 120 to the speaker unit 290. One end of the primary coil of the earphone transformer 250 is connected to the first core wire 121 of the earphone wire 110 and the other end of the primary coil is connected to the output of the conversion unit 260, Are connected to the speaker unit (290).

The DC transformer 280 changes the DC voltage applied from the DC power supply unit 240 to a voltage of a proper magnitude to the sensor 270 and applies the changed DC voltage to the sensor 270.

The sensor 270 generates a sensor signal voltage having a voltage corresponding to the sensing result, and outputs the sensor signal voltage to the converting unit 260.

The converter 260 outputs the sensor signal current Iacc proportional to the voltage of the input sensor signal. The sensor signal current Iacc is applied to the earphone wire 120 through the earphone transformer 250, and is transmitted to the device 130.

In the system configured as shown in FIG. 3, the audio signal current Iss, the sensor signal current Iacc, and the voltage application path are as follows. First, the audio signal current Iss is outputted by the processor 210 and input to the primary coil of the device transformer 230. The audio signal current Iss passing through the primary coil of the device transformer 230 is applied to the first core wire 121 of the earphone wire 120. The audio signal current Iss is inputted to the primary coil of the earphone transformer 250 and is guided to the secondary coil, and then transmitted to the speaker unit 290.

The driving voltage of the sensor 270 is applied to the DC transformer 280 through the first core wire 121 by the DC power supply unit 240. The DC transformer 280 adjusts the applied voltage appropriately and applies it to the sensor 270.

The sensor signal is generated by the sensor 270 and converted into a current form proportional to the sensing value by the converter 260. The sensor signal current Iacc is then output to the earphone transformer 250 through the primary coil of the earphone transformer 250 And is transmitted to the first core wire 121. The sensor signal current Iacc is input to the primary coil of the device transformer 230. Accordingly, the sensor signal current Iacc is induced in the secondary coil of the device transformer 230 and transferred to the ADC 220. The ADC 220 converts the sensor signal current Iacc into a digital signal and outputs the digital signal to the processor 210. [

Even if the earphone wire 120 is constituted by two core wires in this way, bi-directional transmission of the sensor signal and the audio signal is possible.

4 illustrates that when the sensor 270 has a plurality of output channels 271, 272 and 273, the multiplexer 310 and the clock generator 300 are provided at the input of the converter 260, An example of a method of implementing multi-channels so that a plurality of sensor signals can be sequentially transmitted to the device 130 will be shown. The plurality of output channels 271, 272 and 273 are connected to the inputs of respective multiplexers 310. The multiplexer 310 multiplexes a plurality of sensor signals in a time division manner in accordance with a clock applied from the clock generator 300 To the converting unit 260 in sequence.

5, when the system is configured as shown in FIG. 3, the sensor signal current Iacc in the earphone 110 can be transmitted to the speaker unit 290 by the earphone transformer 250 in front of the speaker unit 290, If the frequency of Iacc differs from the audible frequency, it shows that the problem is not caused by the transmission function of the speaker itself. A band filter 330 is provided to prevent the audio signal current Iss from being applied to the ADC 220 in relation to the signal transmitted to the ADC 220 by the device transformer 230 of the device 130 It is possible. Since the audio signal and the sensor signal have different frequency ranges, only the sensor signal can be extracted by the filter.

FIG. 6 is a diagram showing a case where a high impedance element is added to a loop for crosstalk or sidetone elimination described in FIG. 5, and the inter-element connection is changed. 6, one end of the first impedance element 350 is connected to the primary coil and the first core wire 121 of the device transformer 230, and the other end of the first impedance element 350 is connected to the device transformer 230). &Lt; / RTI > One end of the second impedance element 340 is connected to the primary coil of the earphone transformer 250 and the first core wire 121 and the other end of the second impedance element 340 is connected to the second terminal of the earphone transformer 250 Connect to the coil.

Accordingly, the sensor signal current Iacc generated by the sensor 270 is not transmitted to the secondary coil of the earphone transformer 250 by the second impedance element 340, so that the crosstalk or the noise can be removed originally. In the case of the audio signal current Iss, the output of the speaker unit 290 is determined only by the induction of the primary coil without flowing into the secondary coil of the earphone transformer 250 by the second impedance element 340. The first impedance element 350 also plays a similar role to the device transformer 230. That is, the audio signal current Iss output from the processor 210 is not transmitted to the secondary coil of the earphone transformer 250 by the first impedance element 350, so that crosstalk or phasing can be removed originally. In the case of the sensor signal current Iacc, the first impedance element 350 does not flow into the secondary coil of the device transformer 230 but is applied to the ADC 220 only by induction of the primary coil. Thereby, crosstalk or shouting can be eliminated.

7 is a diagram illustrating a circuit of the device 130 in the above-described FIGS. 3, 4, 5, and 6 in order to drive the earphone 110 with a sensor when the device 130 is a general handset. ) 140, so that the earphone 110 with a sensor can be used even with a general handset.

While the present invention has been described in connection with what is presently considered to be practical exemplary embodiments, it is to be understood that the invention is not limited to the disclosed embodiments. In the above example, the earphone 100 and the earphone wire 120 have been separately described in order to facilitate understanding of the explanation. However, the earphone wire 120 is generally included in the earphone 100. And earphone and earphone wire can be replaced by various receivers and receiver wires. Therefore, the scope of the present invention should not be limited by the described embodiments but should be determined by the equivalents of the claims and the claims.

Claims

In the receiver device,
A sensor, a first transformer positioned at a front end of the speaker unit and transmitting an audio signal transmitted through the wire to the speaker unit, and a second transformer disposed at a front end of the speaker unit, And a converter for outputting the sensor signal by outputting a current corresponding to the current to the wire,
A second transformer positioned at a front end of the processor and transmitting the sensor signal transmitted through the wire to the processor; And outputting the audio signal by outputting a current corresponding to the audio signal to the wire.

The receiver device according to claim 1, further comprising an ADC (Analog to Digital Converter) converting the sensor signal transmitted from the second transformer into a digital signal and outputting the digital signal to the processor.

The transformer according to claim 1, wherein one end of the primary coil of the first transformer is connected to the first core wire, the other end of the primary coil of the first transformer is connected to the output of the transformer, And both ends of the secondary coil are connected to the speaker unit.

2. The transformer of claim 1, wherein one end of the primary coil of the second transformer is connected to the first core wire, the other end of the primary coil of the second transformer is connected to the processor, Wherein both ends of the coil are connected to the ADC.

5. The receiver device of claim 4, further comprising a filter for filtering the audio signal between one end of the secondary coil of the second transformer and the ADC.

2. The receiver device as claimed in claim 1, wherein the receiver further comprises a DC transformer for adjusting and outputting a DC power transmitted through the wire from the DC power source to a drive power source of the sensor.

The method of claim 1, wherein the sensor comprises a plurality of output channels,
Further comprising a multiplexer connected to each of the plurality of output channels and for sequentially outputting a plurality of sensor signals to the converter in a time division manner according to a clock applied from the clock generator.

The speaker system according to claim 1, further comprising: a first impedance element for preventing the sensor signal from flowing into the speaker unit; and a second impedance element for preventing the audio signal from flowing into the ADC Receiver device.

9. The transformer according to claim 8, wherein one end of the first impedance element is connected to one end of the primary coil of the first transformer and the first core line, and the other end of the first impedance element is connected to one end of the secondary coil of the first transformer The other end of the primary coil of the first transformer is connected to the output of the converting unit, the other end of the secondary coil of the first transformer is connected to the speaker unit, And the other end of the second impedance element is connected to one end of the secondary coil of the second transformer and the other end of the primary coil of the second transformer is connected to one end of the primary coil of the second transformer, The other end being connected to the processor and the other end of the secondary coil of the second transformer being connected to the ADC.

9. The receiver device according to any one of claims 2 to 9, wherein the DC power source, the second transformer, the ADC, and the processor are included in a dongle.