KR20080078175A - Apparatus and method for error detection of bluetooth module - Google Patents

Apparatus and method for error detection of bluetooth module Download PDF

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Publication number
KR20080078175A
KR20080078175A KR1020070017883A KR20070017883A KR20080078175A KR 20080078175 A KR20080078175 A KR 20080078175A KR 1020070017883 A KR1020070017883 A KR 1020070017883A KR 20070017883 A KR20070017883 A KR 20070017883A KR 20080078175 A KR20080078175 A KR 20080078175A
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KR
South Korea
Prior art keywords
bluetooth module
voltage
module
error
bluetooth
Prior art date
Application number
KR1020070017883A
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Korean (ko)
Inventor
박인표
Original Assignee
엘지이노텍 주식회사
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Publication date
Application filed by 엘지이노텍 주식회사 filed Critical 엘지이노텍 주식회사
Priority to KR1020070017883A priority Critical patent/KR20080078175A/en
Publication of KR20080078175A publication Critical patent/KR20080078175A/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M1/00—Substation equipment, e.g. for use by subscribers
    • H04M1/60—Substation equipment, e.g. for use by subscribers including speech amplifiers
    • H04M1/6033—Substation equipment, e.g. for use by subscribers including speech amplifiers for providing handsfree use or a loudspeaker mode in telephone sets
    • H04M1/6041—Portable telephones adapted for handsfree use
    • H04M1/6058—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone
    • H04M1/6066—Portable telephones adapted for handsfree use involving the use of a headset accessory device connected to the portable telephone including a wireless connection
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H04W4/80—Services using short range communication, e.g. near-field communication [NFC], radio-frequency identification [RFID] or low energy communication
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04M—TELEPHONIC COMMUNICATION
    • H04M2250/00—Details of telephonic subscriber devices
    • H04M2250/02—Details of telephonic subscriber devices including a Bluetooth interface

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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Telephone Function (AREA)

Abstract

An apparatus and a method for detecting an error of a Bluetooth module are provided to detect an error of a Bluetooth module through a simple circuit construction and minimize an error detection time. A module driving state detecting unit(131) is enabled by driving of a Bluetooth module(113) to output the first voltage. A module output voltage detecting unit(134) is connected between the Bluetooth module and an antenna(ANT2) and detects the second voltage outputted from the Bluetooth module to the antenna. A level comparing unit(135) compares the first and second voltages and outputs a module error. The module output voltage detecting unit includes the first resistor(132) connected between the Bluetooth module and the antenna and the second resistor(133) having one end connected with the first resistor and the other end grounded, and outputs a voltage detected between the first and second resistors to the level comparing unit.

Description

Apparatus and method for error detection of bluetooth module

1 is a view showing a communication example of a mobile communication terminal and a Bluetooth headset according to an embodiment of the present invention.

2 is a detailed configuration diagram of FIG. 1.

3 is a block diagram showing an error detection apparatus of a Bluetooth module according to an embodiment of the present invention.

4 is a flowchart illustrating an error detection method of a Bluetooth module according to an exemplary embodiment of the present invention.

<Explanation of symbols for the main parts of the drawings>

100: mobile communication terminal 101: mobile communication module

103: key input unit 105,205: audio processing unit

107,107: Microphone 109,209: Speaker

111,213: Memory 113,201: Bluetooth Module

115203: Control unit 200: Bluetooth headset

130: module error detection unit 131: module driving state detection unit

134: module output voltage detection unit 135: level comparison unit

The present invention relates to an error detection apparatus and method of a Bluetooth module.

In general, Bluetooth communication is a kind of communication method that allows a plurality of communication devices in a short distance to be connected to a wireless network and enables real-time two-way communication without complicated wires connecting the devices. When a signal transmission is required between communication devices in a home or office, it refers to a communication method that does not apply a communication load to a base station by allowing direct communication between communication devices without passing through a remote base station.

Such Bluetooth communication enables high-speed data transmission without waiting time, and is widely used in portable terminals or navigation terminals. In particular, in recent years, a headset for connecting a terminal using Bluetooth communication has appeared, and the headset using the Bluetooth communication recalls a phone call service and a music playing service supported by the terminal even if the user does not intentionally carry the terminal. It is provided by the headset.

However, in order to detect the abnormal operation of the Bluetooth module applied to the terminal, many tests, inspection procedures, and the like are required, and there is a problem that the product shipment is delayed.

An embodiment of the present invention provides an apparatus and method for error detection of a Bluetooth module.

An embodiment of the present invention provides an apparatus and method for detecting an error of a Bluetooth module to check whether a voltage between the Bluetooth module and an antenna is checked and whether an error of the Bluetooth module is detected.

An error detection apparatus for a Bluetooth module according to an embodiment of the present invention may include: a module driving state detection unit enabled by a Bluetooth module and outputting a first voltage; A module output voltage detector connected between the Bluetooth module and the antenna and detecting a second voltage output from the Bluetooth module to the antenna; And a level comparison unit comparing the first voltage and the second voltage to output a module error.

An error detection method of a Bluetooth module according to an embodiment of the present invention may include: driving a Bluetooth module; Enabling the Bluetooth module to output a first voltage; Outputting a second voltage connected between the Bluetooth module and the antenna and detected; And comparing the first voltage and the second voltage and outputting an error of the Bluetooth module.

Hereinafter, with reference to the accompanying drawings as follows.

1 is a view showing a mobile communication terminal and a Bluetooth headset according to an embodiment of the present invention.

Referring to FIG. 1, the mobile communication terminal 100 performs short range wireless communication using the Bluetooth headset 200. Here, the Bluetooth method uses a 2.4 GHz band among the Industrial Scientific Medicine (ISM) bands and supports a data channel and a voice channel. The data channel is an Asynchronous Connection-Less (ACL) channel and consists of a reliable link that supports retransmission. The voice channel is a Synchronous Connection-Oriented (SCO) channel. A data packet once transmitted is not retransmitted.

FIG. 2 is a detailed configuration diagram of FIG. 1.

Referring to FIG. 2, the mobile communication terminal 100 includes a mobile communication module 101, a key input unit 103, an audio processing unit 105, a microphone 107, a speaker 109, a memory 111, and a Bluetooth module ( 113, and the control unit 115.

The mobile communication module 101 performs wireless communication with a base station and processes various data such as voice, text, and data. The key input unit 103 inputs a user's key signal, and may input audio file selection, playback, stop, and stop during audio playback. Also, if necessary, an external device such as a connector and a headset 200 may be used. The mode can also be selected to communicate with the device. The audio processor 105 processes a signal input and output to the microphone 107 or the speaker 109. The memory 111 may store various data, programs, and the like, and may store an audio file such as an MP3. The Bluetooth module 113 communicates with the Bluetooth headset 200 in a Bluetooth manner, and communicates through a supported data channel (ACL channel) and voice channel (SCO channel). When the controller 115 is connected to the Bluetooth headset 200, the controller 115 notifies a call reception and transmits a signal according to music reproduction.

The Bluetooth headset 200 includes a Bluetooth module 201, a controller 203, an audio processor 205, a microphone 207, a speaker 209, a key input unit 211, and a memory 213. The Bluetooth module 201 wirelessly connects to the Bluetooth module 113 of the mobile communication terminal 100 to perform communication on a specific communication channel, and the audio processor 205 converts the output audio signal into an analog signal to convert a speaker ( 209, the audio signal input through the microphone 207 is converted into an electrical signal, and then digitally processed and transmitted to the controller 203. The key input unit 211 may input various key signals according to an operation mode by using a limited key. For example, the key input unit 211 may select starting or ending a call, playing a music, stopping, stopping, playing a next song, and the like. The memory 213 may temporarily store received data or store data necessary for the headset 200. The controller 203 performs a corresponding function operation after receiving and analyzing various messages, converts an audio signal input in a music playback mode into a format to be output to a speaker.

The present invention is to detect the error of the Bluetooth module (113,201) mounted as a separate module, such as the mobile communication terminal 100 or the Bluetooth headset 200. This is because the Bluetooth module is separately installed in a normal system such as a mobile communication terminal, and an error occurs in the Bluetooth module due to the influence of an internal system or a circuit. .

To this end, the present invention includes a module error detection unit 130 for detecting an error of the Bluetooth module 113 between the Bluetooth module 113 and the antenna ANT2 as shown in FIG. The module error detector 130 includes a module driving state detector 131, a module output voltage detector 134, and a level comparator 135.

The module driving state detector 131 is enabled or disabled depending on whether the module is driven or not, and outputs a first voltage V1 when enabled. The module output voltage detector 134 is connected between the Bluetooth module 113 and the antenna ANT2 to detect the second voltage V2 output from the Bluetooth module 113, and the level comparator 135 May compare the first and second voltages V1 and V2 and determine whether there is an error depending on whether the difference is out of an offset range.

As shown in FIG. 3, the error detection operation of the Bluetooth module is as follows.

Referring to FIG. 3, when the test signal is output from the controller 115 to the Bluetooth module 113, the Bluetooth module 113 is driven to output an RF signal corresponding to the test signal to the antenna ANT2.

At this time, an enable signal is input to the module driving state detector 131 by the driving of the Bluetooth module 113, and the module driving state detector 131 is enabled by the enable signal BT_EN and an external voltage It receives (Vdc) and outputs the first voltage (V1).

In addition, the module output voltage detection unit 134 may be composed of a plurality of resistors (132,133), the first resistor (R1) 132 is connected between the output terminal of the Bluetooth module 113 and the antenna (ANT2). The second resistor (R2) 133 is connected between the other end of the first resistor 132 and the ground terminal (GND), the level comparison to the output terminal between the first resistor 132 and the second resistor (133) The unit 135 is connected. The module output voltage detector 134 outputs the second voltage V2 applied between the Bluetooth module 113 and the antenna ANT2 to the level comparator 135.

The level comparison unit 135 compares the first voltage V1 and the second voltage V2, and outputs the Bluetooth module 113 as normal when the voltage difference is within a predetermined offset range. If the difference is out of a predetermined offset range, the Bluetooth module 113 outputs an error.

As described above, the terminal can detect whether the Bluetooth module 113 is error by one test signal, and the mobile communication terminal can prevent the problem caused by the Bluetooth module in advance.

4 is a diagram illustrating an error detection method of a Bluetooth module according to an exemplary embodiment of the present invention.

Referring to FIG. 4, when the test mode of the Bluetooth module starts (S101), when the controller drives the Bluetooth module, the Bluetooth module outputs a test signal to the antenna (S103).

At this time, the module error detection unit detects the operating voltage V1 of the Bluetooth module (S105) and detects the output voltage V2 of the blue permeable module (S107). By comparing the detected two voltages (V1, V2) (S109), it is checked whether the difference between the two voltages is in the offset range, and outputs whether the Bluetooth module is abnormal (S111). That is, if it is within the offset range, it is judged normally, and if it is out of the offset range, it is judged abnormally, and the values corresponding to these determination results are output.

The present invention can detect the output voltage of the Bluetooth module mounted as a separate module in the mobile communication terminal, PDA, navigation terminal, DMB terminal, headset, etc., to determine whether the Bluetooth module error or abnormal operation, thereby minimizing the test time This can improve the reliability of the terminal product.

So far, the present invention has been described with reference to the preferred embodiments, and those skilled in the art to which the present invention pertains to the detailed description of the present invention and other forms of embodiments within the essential technical scope of the present invention. Could be implemented. Here, the essential technical scope of the present invention is shown in the claims, and all differences within the equivalent range will be construed as being included in the present invention.

According to the error detection apparatus and method of the Bluetooth headset according to the present invention, it is possible to easily detect whether or not the error of the Bluetooth module mounted in the terminal, it is possible to improve the reliability of the product.

In addition, a simple circuit configuration can detect errors of the Bluetooth module and minimize error detection time.

Claims (5)

A module driving state detection unit enabled by the driving of the Bluetooth module and outputting a first voltage; A module output voltage detector connected between the Bluetooth module and the antenna and detecting a second voltage output from the Bluetooth module to the antenna; Device for detecting the error of the Bluetooth module comprising a level comparison unit for comparing the first voltage and the second voltage and outputs a module error. The method of claim 1, The module output voltage detector compares a level of a first resistor connected between the Bluetooth module and the antenna, a second resistor having one end connected to the first resistor and the other end grounded, and a voltage detected between the first and second resistors. Error detection device of a Bluetooth module to output negative. Driving the Bluetooth module; Enabling the Bluetooth module to output a first voltage; Outputting a second voltage connected between the Bluetooth module and the antenna and detected; Comparing the first voltage and the second voltage and outputting an error state of the Bluetooth module. The method of claim 3, wherein And applying and driving a test signal to the Bluetooth module. The method of claim 3, wherein And determining the Bluetooth module as normal when the difference voltage between the first voltage and the second voltage exists in an offset range, and determining the Bluetooth module as an error when out of the offset range.
KR1020070017883A 2007-02-22 2007-02-22 Apparatus and method for error detection of bluetooth module KR20080078175A (en)

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KR1020070017883A KR20080078175A (en) 2007-02-22 2007-02-22 Apparatus and method for error detection of bluetooth module

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111908018A (en) * 2020-08-27 2020-11-10 深圳市丰禾原电子科技有限公司 Bluetooth module detection device and operation method thereof

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111908018A (en) * 2020-08-27 2020-11-10 深圳市丰禾原电子科技有限公司 Bluetooth module detection device and operation method thereof

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