Fast connection establishment method for bluetooth device

• US 6,978,119 B2
• Filed: 07/15/2002
• Issued: 12/20/2005
• Est. Priority Date: 05/29/2002
• Status: Active Grant

• Current Assignee: GONG Sun Capital LLC
• Original Assignee: Lite-On Technology Corporation
• Inventors: Chen, James
• Primary Examiner(s): Corsaro, Nick
• Assistant Examiner(s): Dao, Minh D.
• Application Number:
  US10/194,212
• Publication Number:
  US 20040203366A1
• Time in Patent Office: 1,254 Days
• Field of Search: 455/41.2, 455/41.3, 455/419, 455/420, 455/66.1, 455/67.7, 455/556.1
• US Class Current: 455/41.2
• CPC Class Codes: H04W 76/10 Connection setup
• CPC Class Codes: H04W 8/26 Network addressing or numbering for mobility support
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks

Abstract

A fast connection establishment method for a bluetooth device is used to establish a connection between two bluetooth devices in order to provide a wireless transmission function. A bluetooth module, bluetooth address memory, CPU and connection interface for outside device are installed in each bluetooth device. The method first connects the three signal contacts of a bluetooth device to the three signal contacts of another bluetooth device to interchange the bluetooth addresses with each other. Then, the bluetooth address memory of the bluetooth device is used to store the bluetooth address of the opposite bluetooth device. After this, the bluetooth address is sent out after the power source of the bluetooth device is on. Finally, a bluetooth connection procedure is started if the bluetooth address of the opposite device is received by it in a specific time. Thereby, a wireless transmission can be established between two bluetooth devices.

Claims

1. A fast connection establishment method for a bluetooth device, wherein a bluetooth module a bluetooth address memory, a CPU and an outside device connection interface are mainly installed in the bluetooth device, said method comprising the following steps:

a. contacting three signal contacts of said bluetooth device with three signal contacts of another bluetooth device, and then interchanging respective bluetooth addresses of the bluetooth device and said another bluetooth device after said bluetooth devices are switched on;

b. using said bluetooth address memory of said bluetooth device to store said bluetooth address of said another bluetooth device;

c. said bluetooth address being sent out from said bluetooth device after said bluetooth device is switched on; and

d. a bluetooth connection procedure being activated if said bluetooth address of said another bluetooth device is received in a specific time,

whereby a connection is built between said two bluetooth devices so as to provide a wireless transmission function.

2. The method of claim 1, wherein said three signal contacts of said bluetooth device are connected with a data input line, ground line and data output line respectively.

3. The method of claim 1, wherein said connection interface is used to connect said bluetooth device with an outside device.

4. The method of claim 3, wherein said connection interface is an RS232 or a USB interface.

5. The method of claim 3, wherein said outside device is a computer, a modem, a keyboard or a mouse.

6. The method of claim 1, wherein said bluetooth device further comprises a speaker or a photodiode, used to announce the success or failure of said bluetooth connection.

7. The method of claim 1, wherein at said (d) step, said bluetooth device enters into page scan mode to wait for a connection, if said bluetooth address of said opposite bluetooth device is larger than said bluetooth address of said bluetooth device after said bluetooth connection procedure is activated.

8. The method of claim 1, wherein at said (d) step, said bluetooth device enters into page mode to ask for building a connection, if said bluetooth address of said opposite bluetooth device smaller than said bluetooth address of said bluetooth device after said bluetooth connection procedure is activated.

9. The method of claim 1, wherein said bluetooth device further comprises a connection interface to connect said bluetooth device with an outside device.

10. The device method of claim 9, wherein said bluetooth device further comprises a speaker or a photodiode, used to announce the success or failure of said bluetooth connection.

11. The method of claim 1, wherein said bluetooth device further comprises a wireless transmission device, used to replace a RS232 cable, mainly comprising an RS connection head connected to a computer or a peripheral device;

said three signal contacts of said bluetooth device including data contacts including a data output line, a ground line and a data input line;

whereby a wireless transmission is processed between said two bluetooth devices after said three contacts of said both bluetooth devices are contacted.