Wireless transmission module and method thereof and peripheral input device of wireless data processing device using the module/method

• US 7,167,722 B2
• Filed: 11/15/2004
• Issued: 01/23/2007
• Est. Priority Date: 06/08/2004
• Status: Active Grant

• Current Assignee: Muller Capital LLC (Intellectual Ventures LLC)
• Original Assignee: Lite-On Technology Corporation
• Inventors: Chiu, Alex, Chuang, Chris
• Primary Examiner(s): Le; Danh
• Application Number:
  US10/986,899
• Publication Number:
  US 20050272467A1
• Time in Patent Office: 799 Days
• Field of Search: 455/103, 455/88, 455/179.1, 455/553.1, 455/552.1, 455/41.2, 398/115, 398/116
• US Class Current: 455/553.1
• CPC Class Codes: H04B 1/40 Circuits

Abstract

A wireless transmission module comprises: a first transceiver used to broadcast and to receive signals in a first frequency band; a second transceiver used to broadcast and to receive signals in a second frequency band; a switching circuit used to provide a single path of transmission and to control the its switches between the first transceiver and the second transceiver; and a processing unit used to control the switching circuit to switch the path of transmission from the first transceiver to the second transceiver when using the first frequency band of signal to communicate with a wireless device is not possible.

Claims

1. A wireless transmission module, comprising:

a first transceiver, which is used to broadcast and to receive wireless signals in a first frequency band;

a second transceiver, which is used to broadcast and to receive wireless signals in a second frequency band;

a switching circuit, which is used to provide a single path of transmission and to control switching between the first transceiver and the second transceiver;

a processing unit, which is used to control the switching circuit to switch the path of transmission from the first transceiver to the second transceiver when using the first frequency band of signal to communicate with a wireless device is not possible, and a cutting signal is generated to control the switching circuit to switch the path of transmission from the first transceiver to the second transceiver; and

a signal detecting unit to detect the wireless signal in the first frequency band sent by the first transceiver and to notify the processing unit when the wireless signal in the first frequency band is detected to be smaller than a predetermined threshold.

2. The wireless transmission module of claim 1, wherein the wireless signal in the first frequency band is a 27 MHz radio frequency (RF) signal and the wireless signal in the second frequency band is a Bluetooth RF signal.

3. The wireless transmission module of claim 1, wherein the wireless signal in the first frequency band is a Bluetooth RF signal and the wireless signal in the second frequency band is a 27 MHz RF signal.

4. A wireless peripheral input device of a data processing unit, comprising:

a peripheral input device, which contains arrayed keys to generate a corresponding signal for each of the keys or a track ball to generate a corresponding signal for each action; and

a wireless transmission module, which is coupled to the input device, for transmitting each signal in a wireless means, and a data processing device, wherein the wireless transmission module contains;

a first transceiver used to broadcast and to receive signals in a first frequency band;

a second transceiver used to broadcast and to receive signals in a second frequency band;

a switching circuit used to provide a single path of transmission and to control the its switches between the first transceiver and the second transceiver; and

a processing unit used to control the switching circuit to switch the path of transmission from the first transceiver to the second transceiver when using the first frequency band of signal to communicate with a wireless device is not possible.

5. The wireless peripheral input device of a data processing unit as in claim 4, wherein when the processing unit determines that using the first frequency band of signal to communicate with a wireless device is not possible a cutting signal is generated to control the switching circuit to switch the path of transmission from the first transceiver to the second transceiver.

6. The wireless peripheral input device of a data processing unit as in claim 4 further comprising a signal detecting unit to detect the wireless signal in the first frequency band sent by the first transceiver and to notify the processing unit when the wireless signal in the first frequency band is detected to be smaller than a predetermined threshold.

7. The wireless peripheral input device of a data processing unit as in claim 4, wherein the wireless signal in the first frequency band is a 27 MHz RF signal and the wireless signal in the second frequency band is a Bluetooth RF signal.

8. The wireless peripheral input device of a data processing unit as in claim 4, wherein the wireless signal in the first frequency band is a Bluetooth RF signal and the wireless signal in the second frequency band is a 27 MHz RF signal.

9. A wireless data processing device, comprising:

a peripheral input device of a data processing device with a first wireless transmission module, wherein the first wireless transmission module contains;

a first transceiver used to broadcast and to receive signals in a first frequency band;

a second transceiver used to broadcast and to receive signals in a second frequency band; and

a switching circuit used to provide a single path of transmission and to control switching between the first transceiver and the second transceiver; and

a data processing device with a second wireless transmission module, wherein the second wireless transmission module contains;

a first transceiver used to broadcast and to receive signals in a first frequency band;

a second transceiver used to broadcast and to receive signals in a second frequency band;

a signal detecting unit to detect wireless signals emitted by the first transceiver in the first frequency band and to notify the processing unit when the detect wireless signal is smaller than a predetermined value; and

wherein when the processing unit determines that using the first frequency band of signal to communicate with a wireless device is not possible a cutting signal is generated to control the switching circuit to switch the path of transmission from the first transceiver to the second transceiver.

10. The wireless data processing device of claim 9, wherein the wireless signal in the first frequency band is a 27 MHz RF signal and the wireless signal in the second frequency band is a Bluetooth RF signal.

11. The wireless data processing device of claim 9, wherein the wireless signal in the first frequency band is a Bluetooth RF signal and the wireless signal in the second frequency band is a 27 MHz RF signal.

12. A wireless transmission method for wireless data transmissions between a wireless transmission module of a wireless peripheral input device and a data processing device, wherein the method contains the steps of:

initiating a wireless signal transmission in a first frequency band between the wireless transmission module and the data processing device;

returning a response signal when the wireless signal in the first frequency band is smaller than a predetermined value;

generating a cutting signal according to the response signal; and

switching the wireless signal transmission in the first frequency band to a wireless signal transmission in the second frequency band according to the cutting signal.

13. The method of claim 12, wherein the wireless signal in the first frequency band is a 27 MHz RF signal and the wireless signal in the second frequency band is a Bluetooth RF signal.

14. The method of claim 12, wherein the wireless signal in the first frequency band is a Bluetooth RF signal and the wireless signal in the second frequency band is a 27 MHz RF signal.