WO2007068164A1

WO2007068164A1 - Method and means for quickly establishing connection between bluetooth devices

Info

Publication number: WO2007068164A1
Application number: PCT/CN2006/001445
Authority: WO
Inventors: Guangxiang Yang
Original assignee: Zte Corporation
Priority date: 2005-12-13
Filing date: 2006-06-26
Publication date: 2007-06-21
Also published as: CN1983842A

Abstract

A kind of method and means for quickly establishing connection between bluetooth devices. The means includes a memory, a processor, a bluetooth communication module, a luminescent display screen which can produce sequence visible light signal, a sensitimeter or a camera head, therein, the processor and memory constitute a programmable computer system; the bluetooth communication module is used for bluetooth wireless connection and transmiting or receiving data, the luminescent display screen is used for producing sequence visible light signal, the sensitimeter or the camera head is used for receiving sequence visible light signal from other bluetooth devices, to obtain information for establishing connection. With the transmission mode of point to point sequence visible light, the method and device in present invention will not exposure the address information of bluetooth device, and can increase the security of establishing connection and connection speed between bluetooth devices.

Description

Device and method for quickly establishing connection of Bluetooth wireless device

Technical field

The present invention relates to short-range wireless communication technology, and more particularly to a Bluetooth wireless communication device that rapidly establishes a connection. Background technique

Bluetooth technology is an open standard, short-range, low-cost wireless communication technology. Currently, more and more electronic products have Bluetooth wireless communication capabilities. These devices with Bluetooth wireless communication capabilities include cell phones, PDAs, MP3 players, handheld game consoles and portable computers. Bluetooth wireless communication technology is increasingly used to transmit information between people. The increase in the number of devices has also led to a significant increase in the number of Bluetooth devices in places where people in public places are concentrated.

People want to use Bluetooth wireless communication technology to quickly find each other's Bluetooth devices, and to establish a connection quickly and securely.

However, there are two problems with Bluetooth wireless technology in specific applications:

1. The address of the Bluetooth device is exposed when looking for the device to be connected, and there may be a malicious Bluetooth device masquerading as the device that is desired to be found. This is a security issue.

2. There is a problem that the connection establishment speed is slow when establishing a connection. The reason for this problem is that the connection process defined by the Bluetooth baseband specification takes a long time.

These two problems have seriously affected the application of this technology.

There are two processes in the establishment of a point-to-point connection defined by the Bluetooth baseband specification: the Inquiry and page processes:

First, the Bluetooth device that is ready to initiate the connection performs an Inquiry process to discover other Bluetooth devices within the searchable range. In this process, the Bluetooth device performing the Inquiry process collects the address (BD_ADDR) and clock information of all responding devices. At this point, the device is in a state that can be discovered by other Bluetooth devices.

After the collection is complete, enter the page process. In this process, the Bluetooth device that initiated the connection Establish an actual wireless connection with a queried (or user-selected) Bluetooth device.

During the inquiry process, the device that initiates the connection searches for other Bluetooth devices at the predefined 16 hopping points. This process takes at least 10.24 seconds without interference. If there is interference, this time will be longer.

Due to the long connection establishment time, the efficiency of Bluetooth wireless communication is seriously affected, which is inconvenient for users. Summary of the invention

The technical problem to be solved by the present invention is to provide a method for establishing a secure connection between a Bluetooth device and a Bluetooth device to solve the problem of security problems and long establishment time when the Bluetooth device establishes a connection in the prior art.

The main idea of the present invention is to use point-to-point visible light transmission to enable the exchange of information between devices to establish the connection. After obtaining this information, the device that initiated the connection can establish a wireless connection with the target device more quickly.

In order to solve the above technical problem, the present invention provides a device for rapidly establishing a connection for a Bluetooth wireless device, including a memory, a processor, a Bluetooth communication module, an illumination type display capable of generating a serialized visible light signal, a photoreceptor or a camera, wherein The processor and the memory form a programmable computer system; the Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception; the illuminating display screen is used to generate serialized visible light signals, and the photoreceptor or camera is used to receive other Bluetooth devices. The serialized visible light signal is used to obtain the information needed to establish a connection.

The invention also provides a device for quickly establishing a connection for a Bluetooth wireless device, which is used for a mobile phone, in a mobile phone, including a photoreceptor or a camera, a Bluetooth communication module, a processor and a memory in the mobile phone for controlling transmission and reception information or Processing; Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception, the display screen of the mobile phone is used to generate serialized visible light signals, and the photoreceptor or camera is used to receive serialized visible light signals emitted by other Bluetooth device illumination display screens, Get the information you need to establish a connection.

The present invention also provides a device for rapidly establishing a connection for a Bluetooth wireless device, for a PDA, In the PDA, including a photoreceptor or camera, a Bluetooth communication module, a processor and a memory in the PDA are used to control or process the transmission and reception information; the Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception, and the display screen of the PDA is used. To generate a serialized visible light signal, the photoreceptor or camera is used to receive serialized visible light signals from other Bluetooth device illumination displays to obtain the information needed to establish a connection.

The present invention also provides a device for quickly establishing a connection for a Bluetooth wireless device, for an MP3 player, in an MP3 player, including a photoreceptor or a camera, a Bluetooth communication module, a processor and a memory in an MP3 player. The transceiver information is controlled or processed; the Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception, the display screen of the MP3 player is used to generate serialized visible light signals, and the photoreceptor or camera is used to receive other Bluetooth device illumination display The serialized visible light signal is sent to obtain the information needed to establish a connection.

The invention also provides a device for quickly establishing a connection for a Bluetooth wireless device, which is used in a handheld game machine, in a handheld game machine, comprising a photoreceptor or a camera, a Bluetooth communication module, a processor and a memory in a handheld game machine. The transceiver information is controlled or processed; the Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception, the display screen of the handheld game machine is used to generate serialized visible light signals, and the photoreceptor or camera is used to receive other Bluetooth device illumination display The serialized visible light signal is sent to obtain the information needed to establish a connection.

The invention also provides a device for rapidly establishing a connection for a Bluetooth wireless device, which is used for a portable computer, in a portable computer, comprising a photoreceptor or a camera, a Bluetooth communication module, a processor and a memory in the portable computer for transmitting and receiving information Control or processing; Bluetooth communication module for Bluetooth wireless connection and data transmission and reception, portable computer display screen for generating serialized visible light signals, photoreceptor or camera for receiving serialization from other Bluetooth devices Visible light signal to get the information needed to establish a connection.

The present invention also provides a method for quickly establishing a connection between Bluetooth devices, comprising the steps of: (a) placing the photoreceptor or camera of the Bluetooth device A in a working state so that it can sense changes in the visible light signal of the outer boundary.

(b) Bluetooth device B aligns its display screen with the photoreceptor or camera of Bluetooth device A, and is as close as possible to the photoreceptor or camera of Bluetooth device A; (c) Bluetooth device B converts the information required to establish a Bluetooth wireless connection into binary data suitable for serializing visible light representation;

(d) Based on the calculated binary data suitable for serializing visible light expression, the Bluetooth device B controls the display screen to generate a continuously serialized visible light signal to express the Bluetooth device B to establish blue

5 teeth required for wireless connection;

(e) Bluetooth device A receives the serialized visible light signal from Bluetooth device B through the photoreceptor or camera, and then converts the received visible light signal to obtain the information required by Bluetooth device B to establish a Bluetooth wireless connection;

(f) Bluetooth device A performs a 0 page (paging) process based on the obtained Bluetooth device B to establish the information required for Bluetooth wireless, and establishes a Bluetooth wireless connection with the Bluetooth device B.

Further, the conversion algorithm adopted by the Bluetooth device B in the steps (c) and (e) is a Manchester code or other baseband transmission coding method.

Further, the address binary data of the Bluetooth device includes a check digit.

Further, the Bluetooth device is a mobile device or a fixed device, and the mobile device includes a mobile phone with a Bluetooth function 15, a PDA, an MP3 player, a portable computer, a game machine, and the fixed device includes a Bluetooth-enabled MP3 music vending machine, and a subway electronic ticket vending machine. , cinema electronic ticket vending machine.

Compared with the prior art, the present invention does not expose the address information of the Bluetooth device through the point-to-point serialized visible light transmission mode, thereby improving the security of establishing a connection between the Bluetooth devices; transmitting the connection information through the serialized visible light to the desired connection The Bluetooth device can increase the connection speed between the Bluetooth devices.

BRIEF abstract

1 is a schematic structural diagram of an apparatus for rapidly establishing a connection of a Bluetooth wireless device according to the present invention; FIG. 2 is a schematic diagram of establishing a wireless connection by using the present invention between two Bluetooth devices; FIG. 3 is a schematic diagram of an embodiment of the present invention. schematic diagram.

Figure 4 is a schematic diagram of Manchester coding. BEST MODE FOR CARRYING OUT THE INVENTION

As shown in FIG. 1, the apparatus 6 for quickly establishing a connection of a Bluetooth wireless device includes: a random access memory (RAM) 1, a processor 2, a Bluetooth communication module 3, an LCD display screen or other illumination capable of emitting serialized visible light. Type display screen 4, photoreceptor or camera 5.

Wherein: processor 2 and RAMI form a programmable computer system; Bluetooth communication module 3 is responsible for Bluetooth wireless connection, and data transmission and reception; LCD display screen or other illuminating display screen 4 capable of emitting serialized visible light for generating continuous The visible light signal, the continuously serialized visible light signal is used to express the information needed to establish the connection; the photoreceptor or camera 5 is used to receive the continuously serialized visible light signal to obtain the information needed to establish the connection.

As shown in Figure 2, two devices that meet the requirements of device 6 of Figure 1 transmit the information needed to establish a connection through serialized visible light, and then establish a wireless connection. The two devices shown in Figure 2 are the PDA7 and the mobile phone 8, respectively.

The PDA 7 has a Bluetooth wireless communication module 3, a camera 5 and a serializable visible light LCD screen 4 .

The mobile phone 8 has a Bluetooth wireless communication module 3, a camera 5 and a serializable visible light LCD screen 4 .

When the PDA 7 is to be connected to the mobile phone 8, the PDA 7 is the originating party and the mobile phone 8 is the connected party. A specific embodiment of the present invention will be described with reference to FIG. 2:

In order to start the Bluetooth connection, the PDA7 activates the camera 5 on its device, making the camera

5 is in working condition. The working state means that the camera 5 can sense the change of the color and brightness of the visible light in the real time and record it. The camera 5 can be switched between the active state and the closed state. When the camera 5 enters the off state, the camera 5 no longer receives the visible light signal from the outside.

When the camera of the PDA 7 is activated and used to receive information establishing a Bluetooth wireless connection carried on the serialized visible light, the PDA 7 should prompt the user with text, images or video on its display screen to indicate that the device itself is currently present. status.

At a minimum, this information should indicate: The camera is in operation and is receiving the correct connection. The mobile phone user operates the mobile phone 8 to initiate a Bluetooth connection. The mobile phone 8 uses text or images on the display screen to remind the user of the next step that needs to be performed: Align the screen with the camera of the PDA 7. The prompt message should be kept for a while, waiting for the user to start the operation. After the prompt message appears, the user of the mobile phone 8 will align the screen of the mobile phone 8 with the camera of the PDA 7 according to the prompt information. The distance between the screen and the camera of the PDA7 should be as close as possible to reduce the influence of the ambient light source outside the display screen of the PDA 7 on the camera 5 of the PDA 7. This can improve the accuracy of the visible light signal received by the camera 5 of the PDA 7.

After the display screen of the mobile phone 8 is aimed at the camera 5 of the PDA 7, the mobile phone 8 first obtains the address of the local machine. For Bluetooth, this address is a 48-bit binary data consisting of 0 and 1.

The screen of the mobile phone 8 can generate red light and blue light. If the red light is analogized to a high level and the blue light analogy is at a negative level, the Manchester code can be used to convert the 48-bit address binary data into an expression formed by a sequence of high and low levels of variation.

In order to ensure the accuracy of address information transmission, the parity bit should also be added to the address binary data. Even parity can be used. The added check digits can still be encoded in Manchester.

Binding high and low levels with visible light can be used to represent binary data using serialized visible light. The serialized visible color light thus produced is a red-blue transformed visible light for a period of time. The transformation frequency can be used to measure the speed of the transformation. The higher the frequency, the faster the conversion speed. Please refer to Figure 4. In Fig. 4, a solid circle represents blue light, and a hollow circle represents red light. The sequence of high and low levels of variation in the figure corresponds to serialized visible light.

After the mobile phone 8 encodes the binary address information into a serialized visible color light, the control display screen begins to produce a determined serialized visible color light. The frequency of the serialized visible color light should be adapted to the color switching speed of the display screen of the mobile phone 8 and the response speed of the camera 5 of the PDA 7. Switching speed and reaction speed are the hardware characteristics of the device. The greater the frequency of conversion of the serialized visible color light, the shorter the time the address information can be transmitted. After the transfer is completed, the screen of the mobile phone 8 is turned off, and the transmission process of the address information ends. The above process can be referred to Figure 2(a).

The PDA 7 decodes the received signal according to the received coded visible color light signal according to the Manchester coding rule, and obtains the binary address information of the mobile phone 8 by calculation, which is required for the PDA 7 to establish a Bluetooth wireless connection with the mobile phone 8 Information. Decoding is done by PDA7 The processor is done. The speed of decoding is related to the computing speed of the processor.

Using the obtained address information, the Bluetooth module of the PDA 7 performs a page (paging) process to initiate a Bluetooth wireless connection to the handset 8.

In this way, a Bluetooth wireless connection is established. In the process of establishing the connection, the address information of the mobile phone 8 is transmitted in a point-to-point visible light manner. The address information of the mobile phone 8 is not exposed, avoiding the danger of being discovered by nearby malicious devices.

The invention can be used in a variety of forms and is not limited to mobile devices. This unit can be mounted on a stationary device. For example: vending machines in public places, including MP3 music vending machines, subway electronic vending machines, cinema electronic ticket vending machines.

Take the following implementation as an example:

In Fig. 3, an MP3 music vending machine 9 placed in a public place internally meets the requirements of the device 6 in Fig. 1. Photoreceptor 5 is external.

The user of the music phone selects the music that he wishes to purchase through the human machine interface (MMI) of the MP3 music vending machine 9 before the MP3 music vending machine 9. The music to be purchased is stored in the MP3 music vending machine 9. The user of the music mobile phone issues a purchase request to the MP 3 music vending machine 9 through the human machine interface (MMI) of the MP3 music vending machine 9.

The human machine interface (MMI) of the MP3 music vending machine 9 prompts the user to coin and displays the amount of the required coin.

After the coin is operated, the MP3 music vending machine 9 displays the method of transmitting the music data to the user's music phone via Bluetooth on the human machine interface (MMI) in a detailed manner, and informs the specific steps of the operation.

The user of the music phone activates the Bluetooth connection of the mobile phone 8, and the machine 8 uses text or images on the display screen to remind the user of the next step that needs to be performed.

The user aligns the display screen of the mobile phone with the photoreceptor 5 of the MP3 music vending machine 9 according to the prompt information of the MP3 music vending machine 9 and the prompt information of the mobile phone 8. If necessary, the photosensitive window of the photoreceptor 5 of the MP3 music vending machine 9 should be slightly smaller than the mobile phone rhinoceros. There should be a visor around the window to allow the photoreceptor 5 of the MP3 music vending machine 9 to obtain a clearer visible light signal. The handset 8 represents its own address information in a serialized visible color light and controls the display screen to transmit the serialized visible color light. The conversion algorithm can be Manchester coding or other baseband transmission coding methods.

The MP3 music vending machine 9 receives the serialized visible color light signal, and digitizes it and stores it.

The MP3 music vending machine 9 obtains the information required to establish a wireless connection with the mobile phone 8 by decoding and storing it. The MP3 music vending machine 9 prompts the user to remove the handset from the photoreceptor 5 of the MP3 music vending machine 9 on the human machine interface (MMI).

The MP3 Music vending machine 9 performs a page (paging) process to establish a Bluetooth connection with the user's mobile phone 8. After the connection is established, the music data is wirelessly transmitted to the mobile phone 8 via Bluetooth.

After the transfer is completed, the MP3 music vending machine 9 disconnects the Bluetooth connection with the mobile phone 8. The mobile phone 8 stores the music data received via Bluetooth wirelessly in the mobile phone 8, and the user can play the music through the mobile phone 8.

Under this embodiment, the MP3 music vending machine 9 can accurately find the [5 mobile phone, PDA or other portable music playing device of the paid user, and can not mistakenly send the music to the transmission range of the MP3 music vending machine 9. Other users within. The user of the mobile phone 8 can also quickly transfer the address information of his mobile phone 8 to the MP3 music vending machine 9, shortening the waiting time for establishing the connection, and avoiding the danger of exposing the address.

>0 The above device of the present invention can be applied to a Bluetooth-enabled mobile phone, PDA, MP3 player, portable computer, game machine, and the like. The implementation is similar and will not be described here.

Industrial applicability

The method and device of the present invention can improve the security of establishing a connection between Bluetooth devices by using a point-to-point serialized visible light transmission mode, which does not expose the address information of the blue device; and transmits the connection information to the desired connection through serialized visible light. Bluetooth devices that increase the connection speed between Bluetooth devices.

Claims

Claim

1. A device for rapidly establishing a connection between a Bluetooth wireless device, comprising a memory, a processor, a Bluetooth communication module, an illumination type display capable of generating a serialized visible light signal, a photoreceptor or a camera, wherein: the processor and the memory form a Programmable computer system; Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception, the light-emitting display screen is used to generate serialized visible light signals, and the photoreceptor or camera is used to receive serialized visible light signals from other Bluetooth devices. To get the information you need to establish a connection.

2. A device for quickly establishing a connection between a Bluetooth wireless device, used in a mobile phone, in a mobile phone, including a photoreceptor or a camera, a Bluetooth communication module, a processor and a memory in the mobile phone for controlling or processing the information received and received; The Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception. The display screen of the mobile phone is used to generate a serialized visible light signal, and the photoreceptor or the camera is used to receive the serialized visible light signal emitted by the illumination display of other Bluetooth devices to obtain the establishment. Connect the required letter

3. A device for quickly establishing a connection between a Bluetooth wireless device, for a PDA, in a PDA, including a photoreceptor or a camera, a Bluetooth communication module, a processor and a memory in the PDA for controlling or processing the information to be transmitted and received; The Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception. The display screen of the PDA is used to generate serialized visible light signals, and the photoreceptor or camera is used to receive serialized visible light signals from other Bluetooth device illumination display screens for acquisition. Connect the required information.

4. A device for quickly establishing a connection between a Bluetooth wireless device, for an MP3 player, in an MP3 player, including a photoreceptor or a camera, a Bluetooth communication module, a processor and a memory in an MP3 player for transmitting and receiving The information is controlled or processed; the Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception, the display screen of the MP3 player is used to generate serialized visible light signals, and the photoreceptor or camera is used to receive the illumination display of other Bluetooth devices. The visible light signal is serialized to obtain the information needed to establish a connection.

5. A device for quickly establishing a connection between a Bluetooth wireless device, for a handheld game console, in a handheld game console, comprising a photoreceptor or a camera, a Bluetooth communication module, a processor and a memory in the handheld game console for transmitting and receiving Information is controlled or processed; the Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception, and the display screen of the handheld game machine is used to generate serialized visible light signals. The photoreceptor or camera is used to receive serialized visible light signals from other Bluetooth-enabled illuminated displays to obtain the information needed to establish a connection.

6. A device for quickly establishing a connection between a Bluetooth wireless device, for a portable computer, in a portable computer, comprising a photoreceptor or a camera, a Bluetooth communication module, a processor and a memory in the portable computer for controlling the transmission and reception of information Or processing; Bluetooth communication module is used for Bluetooth wireless connection and data transmission and reception, the display screen of the portable computer is used to generate serialized visible light signals, and the photoreceptor or camera is used to receive serialized visible light signals from other bluetooth devices. , to get the information you need to establish a connection.

7. A method for rapidly establishing a connection between Bluetooth devices, comprising the following steps:

(a) The Bluetooth device A's photoreceptor or camera is in operation so that it can sense changes in the visible light signal from the outside.

(b) Bluetooth device B align its display screen with the photoreceptor or camera of Bluetooth device A, and as close as possible to the photoreceptor or camera of Bluetooth device A;

(c) Bluetooth device B converts the information required to establish a Bluetooth wireless connection into binary data suitable for serializing visible light representation;

(d) Based on the calculated binary data suitable for serializing visible light expression, the Bluetooth device B controls the display screen to generate a continuously serialized visible light signal to express the information required by the Bluetooth device B to establish a Bluetooth wireless connection;

(f) Bluetooth device A performs a page (paging) process based on the information required for Bluetooth device B to establish Bluetooth wireless, and establishes a Bluetooth wireless connection with Bluetooth device B.

8. The method according to claim 7, wherein: the conversion algorithm employed by the Bluetooth device B in the steps (c) and (e) is Manchester coding or other baseband transmission coding method.

9. The method of claim 8 wherein: the address binary data of the Bluetooth device comprises a check digit.

10. The method of claim 7 wherein: the Bluetooth device is a mobile device or Fixed equipment, mobile devices including Bluetooth-enabled mobile phones, PDAs, MP3 players, portable computers, game consoles, fixed devices including Bluetooth-enabled MP3 music vending machines, subway electronic ticket vending machines, cinema electronic ticket vending machines.