Transmit-only and receive-only bluetooth apparatus and method

• US 20010056501A1
• Filed: 05/08/2001
• Published: 12/27/2001
• Est. Priority Date: 05/08/2000
• Status: Active Grant

• Current Assignee: CSR Technology Incorporated (Qualcomm, Inc.)
• Original Assignee: Microtune, Inc. (Qualcomm, Inc.)
• Inventors: Law, Hock, Kwan, Dennis
• Granted Patent: US 7,231,451 B2
• Time in Patent Office: Days
• US Class Current: 709/248
• CPC Class Codes: H04L 69/03 Protocol definition or specification protocol conformance testing H04L1/244
• CPC Class Codes: H04M 1/72412 using two-way short-range wireless interfaces
• CPC Class Codes: H04M 2250/02 including a Bluetooth interface
• CPC Class Codes: H04W 24/00 Supervisory, monitoring or testing arrangements
• CPC Class Codes: H04W 48/16 Discovering, processing access restriction or access information
• CPC Class Codes: H04W 56/00 Synchronisation arrangements
• CPC Class Codes: H04W 80/00 Wireless network protocols or protocol adaptations to wireless operation
• CPC Class Codes: H04W 84/00 Network topologies
• CPC Class Codes: H04W 84/18 Self-organising networks, e.g. ad-hoc networks or sensor networks
• CPC Class Codes: H04W 88/02 Terminal devices

Abstract

A transmit-only Bluetooth-compatible apparatus is described comprising: a protocol stack compatible with the Bluetooth protocol standard, the protocol stack including selected portions of the Bluetooth protocol used only for transmitting data; and a transceiver communicatively coupled to the protocol stack and configured to physically transmit the data.

Also described is a receive-only Bluetooth-compatible apparatus comprising: a protocol stack compatible with the Bluetooth protocol standard, the protocol stack including selected portions of the Bluetooth protocol used only for receiving data; and a transceiver communicatively coupled to the protocol stack and configured to physically receive the data.

Also described is a method comprising: generating a transmit-only Bluetooth protocol stack by removing elements of a standard Bluetooth protocol stack related to receiving data; and configuring the transmit-only Bluetooth protocol stack in a transmit-only wireless device for transmitting data.

Claims

1. A transmit-only Bluetooth-compatible apparatus comprising:

a protocol stack compatible with the Bluetooth protocol standard, said protocol stack including selected portions of the Bluetooth protocol used only for transmitting data; and

a transceiver communicatively coupled to said protocol stack and configured to physically transmit said data.

2. The transmit-only apparatus as in

claim 1

further comprising a wireless keyboard enclosure within which said protocol stack and said transceiver are configured.

3. The transmit-only apparatus as in

claim 1

further comprising a mouse enclosure within which said protocol stack and said transceiver are configured.

4. The transmit-only apparatus as in

claim 1

further comprising:

a data source capable of generating said data.

5. The transmit-only apparatus as in

claim 1

further comprising:

synchronization logic configured to synchronize data transmissions between said transmit-only apparatus and a second wireless apparatus by transmitting a synchronization packet prior to transmitting said data, said synchronization packet and said data being separated by a predetermined offset, said offset being usable by said second apparatus to identify said transmit-only apparatus.

6. The transmit-only apparatus as in

claim 1

wherein said protocol stack is configured to encapsulate said data in a packet and cause said transceiver to transmit said packet twice in succession within a predetermined window of time.

7. The transmit-only apparatus as in

claim 6

wherein said predetermined window of time is 8.33 msec.

8. The transmit-only apparatus as in

claim 6

wherein said protocol stack is further configured to cause said transceiver to transmit said packet twice at two different frequencies.

9. A receive-only Bluetooth-compatible apparatus comprising:

a protocol stack compatible with the Bluetooth protocol standard, said protocol stack including selected portions of the Bluetooth protocol used only for receiving data; and

a transceiver communicatively coupled to said protocol stack and configured to physically receive said data.

10. The receive-only apparatus as in

claim 9

further comprising a personal computer within which said protocol stack and said transceiver are configured.

11. The receive-only apparatus as in

claim 9

further comprising:

a data sink capable of processing said data.

12. The receive-only apparatus as in

claim 9

further comprising:

synchronization logic configured to synchronize data transmissions between said receive-only apparatus and a second wireless apparatus by receiving a synchronization packet prior to receiving said data, said synchronization packet and said data being separated by a predetermined offset, said offset being usable by said receive-only apparatus to identify said second wireless apparatus.

13. A method comprising:

generating a transmit-only Bluetooth protocol stack by removing elements of a standard Bluetooth protocol stack related to receiving data; and

configuring said transmit-only Bluetooth protocol stack in a transmit-only wireless device for transmitting data.

14. The method as in

claim 13

wherein said transmit-only wireless device includes a transceiver communicatively coupled to said transmit-only protocol stack and configured to physically transmit said data.

15. The method as in

claim 14

wherein said transmit-only wireless device is a wireless keyboard enclosure within which said transmit-only protocol stack and said transceiver are configured.

16. The method as in

claim 14

wherein said transmit-only wireless device is a wireless mouse within which said transmit-only protocol stack and said transceiver are configured.

17. The method as in

claim 13

further comprising configuring a data source capable of generating said data within said transmit-only wireless device.

18. The method as in

claim 13

further comprising:

configuring within said transmit-only wireless device synchronization logic for synchronizing data transmissions between said transmit-only device and a second wireless device by transmitting a synchronization packet prior to transmitting said data, said synchronization packet and said data being separated by a predetermined offset, said offset being usable by said second device to identify said transmit-only device.

19. The method as in

claim 18

further comprising:

configuring said transmit-only wireless device to encapsulate said data in a packet and cause said transceiver to transmit said packet twice in succession within a predetermined window of time.

20. The method as in

claim 19

further comprising:

configuring said transmit-only wireless device to transmit said packet twice in succession within an 8.33 msec window of time.

21. A transmit-only apparatus comprising:

a transmit-only Bluetooth protocol stack having removed therefrom all Bluetooth protocol elements related to receiving data; and

a transceiver communicatively coupled to said transmit-only Bluetooth protocol stack and configured to physically transmit said data.

22. The transmit-only apparatus as in

claim 21

further comprising a wireless keyboard enclosure within which said transmit-only Bluetooth protocol stack and said transceiver are configured.

23. The transmit-only apparatus as in

claim 21

further comprising a mouse enclosure within which said transmit-only Bluetooth protocol stack and said transceiver are configured.

24. The transmit-only apparatus as in

claim 21

further comprising:

a data source capable of generating said data.