Browse Prior Art Database

Apparatus for Data and Power Switching for Wireless Paired Devices

IP.com Disclosure Number: IPCOM000184914D
Original Publication Date: 2009-Jul-04
Included in the Prior Art Database: 2009-Jul-04
Document File: 3 page(s) / 22K

Publishing Venue

IBM

Abstract

Disclosed is an apparatus for switching between a wireless short range connection to a wired connection for communication and recharging.

This text was extracted from a PDF file.
This is the abbreviated version, containing approximately 42% of the total text.

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Apparatus for Data and Power Switching for Wireless Paired Devices

Disclosed is an apparatus for switching between a wireless short range connection to a wired connection for communication and recharging.

Short range wireless protocols, such as Bluetooth, are being used in a wide range of wireless devices these days. Some common examples include hands-free headsets paired with cell phones or a cell phone paired with a computer. The primary purpose of the Bluetooth communication is for transferring data between the devices. However these wireless Bluetooth devices generally also need to support a cabled connection for recharging their batteries.

Some wireless devices such as a cell phone can transfer data and power over a wired connection, while other devices such as a hands-free headset can only transfer data over Bluetooth and power over a recharging cable. When a cell phone is connected over Bluetooth it cannot switch to a wired connection without reconnecting and possibly interrupting the current data transfer. These restrictions limit the flexibility of these devices and can cause interruptions in operation. In addition, short range wireless connections open new security considerations and the possibility that communications may be intercepted.

There are no known solutions for addressing these limitations. Current functionality offers wired recharging and wireless data connections or wired data and recharging. There is no known ability to switch transfer data methods while recharging over the same cable.

The disclosed system is an apparatus for switching between wireless communication and wired communication, with battery recharging, for a device enabled with a short range wireless communication protocol. This apparatus would need to be enabled in two locations, within the wireless device and within the device to which the wireless device is paired. This apparatus would allow wired or wireless connection and have the ability to switch methods without interruption in communication. The general steps in the operation of the apparatus for a new cable connection would be:

1. Detect new cable connection
2. Instruct device to stop sending data over wireless connection
3. Instruct device to start sending data over wired connection
4. Confirm devices are both successfully transferring data over wired connection
5. Instruct wireless device to turn off wireless receiver/transmitter
6. Begin power transfer and charging of wireless device battery

The general steps in the operation of the apparatus for a disconnected cable connection would be:

1. Detect loss of cable connection
2. Instruct device to stop sending data over wired connection

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3. Instruct wireless device to turn on wireless receiver/transmitter and initiate a wireless connection
4. Instruct device to start sending data over wireless connection
6. Stop power transfer and charging of wireless device battery

There are a number of adva...