Bluetooth enabled mobile device charging cradle and system

• US 6,255,800 B1
• Filed: 01/03/2000
• Issued: 07/03/2001
• Est. Priority Date: 01/03/2000
• Status: Expired due to Term

• Current Assignee: Texas Instruments, Inc.
• Original Assignee: Texas Instruments, Inc.
• Inventors: Bork, Stephan
• Primary Examiner(s): Wong, Peter S.
• Assistant Examiner(s): Tibbits, Pia
• Application Number:
  US09/476,986
• Time in Patent Office: 547 Days
• Field of Search: 320/115, 455/463, 455/557, 455/466, 455/404
• US Class Current: 320/115
• CPC Class Codes: G06F 1/266 Arrangements to supply power to external peripherals either directly from the computer or under computer control, e.g. supply of power through the communication port, computer controlled power-strips
• CPC Class Codes: H02J 5/00 Circuit arrangements for transfer of electric power between ac networks and dc networks H02J3/36 takes precedence
• CPC Class Codes: H02J 7/02 for charging batteries from ac mains by converters
• CPC Class Codes: H04M 2250/02 including a Bluetooth interface

Abstract

A mobile device charging cradle (46) to enable short distance wireless communication between a personal computer (10) and at least one other short distance wireless communication enabled electronic device (50). In a preferred embodiment of the invention, a short distance wireless radio (transceiver—Bluetooth enabled) (44) and antenna (42) are added to a charging cradle to produce a combination charging and short distance wireless communication enabled cradle (46) which is coupled via a data cable (12) to a personal computer (10). The short distance wireless (in this case RF) communication enabled cradle enables a system in which a legacy architecture personal computer may communicate with other short distance RF communication enabled electronic devices. Such communication is enabled whether or not another RF communication enabled portable electronic device is coupled to the cradle. In another embodiment of the invention, a universal serial bus USB in a computer is used as a power source for the previously described cradle. In one embodiment, a data/power cable (78) couples a computer (70) having an external USB connector (72) to the short distance wireless communication enabled cradle (74). The cable includes electronic circuitry (82) for converting the voltage level supplied by the USB to a voltage level usable by the cradle—including its Bluetooth radio (44) and any peripheral electronic device that may be coupled to the cradle (52,54).

Claims

1. A charging cradle, comprising:

an RF transceiver;

an antenna coupled to said RF transceiver; and

an input for coupling a peripheral electronic device to said RF transceiver.

2. The charging cradle of claim 1, wherein said input facilitates the transferring of data between said peripheral electronic device and said RF transceiver.

3. The charging cradle of claim 1, further including a power input for supplying power to said RF transceiver and to another peripheral electronic device coupled to said charging cradle.

4. The charging cradle of claim 1, wherein said RF transceiver is a Bluetooth radio.

5. The charging cradle of claim 1, wherein a transmitter portion of said RF transceiver transmits with a power of less than 100 mW.

6. The charging cradle of claim 1, wherein said another peripheral electronic device is a non-Bluetooth enabled cellular telephone.

7. The charging cradle of claim 1, wherein said another peripheral electronic device is a Bluetooth enabled cellular telephone.

8. The charging cradle of claim 1, wherein said charging cradle further includes a connector for coupling said connector to a data connector on said peripheral electronic device.

9. The charging cradle of claim 1, wherein said coupling is accomplished with a two-conductor cable.

10. The charging cradle of claim 1, further including a power cable coupling said cradle to a dedicated power supply.

11. The charging cradle of claim 10, wherein said charging cradle further includes a connector for coupling a power connector on said peripheral electronic device to said power cable.

12. The charging cradle of claim 10, wherein said charging cradle further includes a connector for coupling a power connector on said another peripheral electronic device to said power cable.

13. A system, comprising:

a peripheral electronic device and a data cable coupling said computer to a charging cradle for another peripheral electronic device, said charging cradle comprising an RF transceiver coupled to said data cable and an antenna coupled to said RF transceiver.

14. The system of claim 13, wherein a transmitter portion of said RF transceiver transmits with a power of less than 100 mW.

15. The system of claim 13, wherein said RF transceiver is a Bluetooth radio.

16. The system of claim 15, wherein said another peripheral electronic device is a non-Bluetooth enabled cellular telephone.

17. The system of claim 15, wherein said another peripheral electronic device is a Bluetooth enabled cellular telephone.

18. The system of claim 15, wherein said charging cradle further includes a connector for coupling a data connector on said another peripheral electronic device to said data cable.

19. The system of claim 13, wherein said data cable is a two-conductor cable.

20. The system of claim 13, further including a power cable coupling said peripheral electronic device to a dedicated power supply.

21. The system of claim 13, further including a power cable coupling said cradle to a dedicated power supply.

22. The system of claim 21, wherein said charging cradle further includes a connector for coupling a power connector on said another peripheral electronic device to said power cable.

23. The system of claim 13, wherein said peripheral electronic device is a computer.

24. A system, comprising:

a computing apparatus having a Universal Serial Bus and an external connector coupled to said Universal Serial Bus;

a charging cradle for a peripheral electronic device, said charging cradle comprising an RF transceiver coupled to an antenna; and

a multi-conductor cable coupling said external connector to said charging cradle, at least two of said conductors in said multi-conductor cable carrying data between said computing apparatus and said RF transceiver and at least two other of said conductors carrying power between said computing apparatus, said RF transceiver and a connector for powering a peripheral electronic device coupled to said cradle.

25. The system of claim 24, wherein said RF transceiver is a Bluetooth radio.

26. The system of claim 25, wherein said peripheral electronic device is a non-Bluetooth enabled cellular telephone.

27. The system of claim 25, wherein said peripheral electronic device is a Bluetooth enabled cellular telephone.

28. The system of claim 24, wherein said multi-conductor cable is a four-conductor cable.

29. The system of claim 24, further including a power cable coupling said computing apparatus to a dedicated power supply.

30. The system of claim 24, wherein said multi-conductor cable includes a connector coupled to said external connector, said connector further including electronic circuitry for converting the voltage level supplied by said USB to a voltage level usable by said RF transceiver and a peripheral electronic device coupled to said cradle.