# US 7,613,425 B2 · Bluetooth communications

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- Number: US 7,613,425 B2
- Document ID: US7613425B2
- Status: Granted
- Kind: B2
- Application number: 11/006,520
- Filed: 2004-12-07
- Published: 2005-08-25
- Granted: 2009-11-03
- Earliest claimed: 2003-12-08
- Assignees: Ezurio Limited
- Inventors: Mahendra J Tailor
- Web page: https://patentgrep.com/patent/US7613425B2

## CPC

- H04W 88/04: adapted for relaying to or from another terminal or user
- H04W 84/18: Self-organising networks, e.g. ad-hoc networks or sensor networks
- H04W: WIRELESS COMMUNICATION NETWORKS (broadcast communication H04H; communication systems using wireless links for non-selective communication, e.g. wireless extensions H04M1/72)

## Abstract

Bluetooth range extending apparatus is disclosed for extending the range of Bluetooth communication between a master and an associated slave device. The apparatus (2) comprises a first communication module (3) for receiving incoming Bluetooth signals carrying data and extracting the carried data, and a second communication module (3) for re-encoding the extracted data and transmitting corresponding outgoing Bluetooth signals.

## Claims

### Claim 1

Bluetooth range extending apparatus for extending the range of Bluetooth communication between a master device and an associated slave device, the apparatus comprising a first communication module which, in use, receives incoming Bluetooth signals carrying data and which extracts the carried data, and a second communication module which, in use, re-encodes the extracted data and transmits corresponding outgoing Bluetooth signals,
wherein the first communication module is a transceiver module which is arranged to transmit Bluetooth signals as well as to receive Bluetooth signals, and the second communication module is a transceiver module which is arranged to receive Bluetooth signals as well as to transmit Bluetooth signals and one communication module is preconfigured as a Bluetooth slave, and the other communication module is preconfigured as a Bluetooth master,
wherein the first communication module comprises a Bluetooth serial adapter which is arranged to act as a translator between Bluetooth signals and serial signals, and the second communication module comprises a Bluetooth serial adapter which is arranged to act as a translator between Bluetooth signals and serial signals,
wherein one Bluetooth serial adapter is preconfigured as a slave and the other Bluetooth serial adapter is preconfigured as a master,
wherein the two Bluetooth serial adapters incorporate a plurality of connectors; at least two connectors are connected so that a serial output of one of the adapters forms a serial input to the other Bluetooth serial adapter.

### Claim 2 (depends on 1)

A Bluetooth range extending apparatus according to claim 1, wherein each Bluetooth to serial adapter comprises a Bluetooth connection module which conducts Bluetooth communication with another Bluetooth enabled device, a serial connector suitable to accept a serial cable, and a serial to Bluetooth interface.

### Claim 3 (depends on 2)

A Bluetooth range extending apparatus according to claim 2, wherein the two Bluetooth serial adapters are connected to one another via their respective serial connectors, with a RX (receive) pin on one connector connected to a TX (transmit) pin on the other connector and vice versa.

### Claim 4 (depends on 1)

A Bluetooth range extending apparatus according to claim 1, wherein a communication module is configured to be discoverable and connectable on power up and to autoanswer incoming Bluetooth inquiries.

### Claim 5 (depends on 4)

A Bluetooth range extending apparatus according to claim 4, wherein said communication module is arranged so as to be transparent once in a connected state so that any data arriving via the received Bluetooth RF packets are presented directly to the other communication module.

### Claim 6 (depends on 5)

A Bluetooth range extending apparatus according to claim 5, wherein said other communication module is arranged so as to be transparent once in a connected state.

### Claim 7 (depends on 1)

A Bluetooth range extending apparatus according to claim 1, wherein the Bluetooth range extending apparatus is arranged so as to be transparent once a connection is made between two Bluetooth devices via the apparatus.

### Claim 8 (depends on 1)

A Bluetooth range extending apparatus according to claim 1, wherein said Bluetooth serial adapters are connected back to back.