Dynamic discovery of wireless peripherals

Details Dynamic discovery of wireless peripherals Dynamic discovery of wireless peripherals

1997-06-13

2001-02-27

Lee, Thomas C. (Department: 2782)

Electrical computers and digital data processing systems: input/

Input/output data processing

Peripheral monitoring

C710S108000, C345S156000, C370S347000, C375S295000, C455S066100

Reexamination Certificate

active

06195712

ABSTRACT:

FIELD OF THE INVENTION
The present invention relates generally to processor-based computing systems, and more particularly to the use of wireless peripheral devices with a processor-based host computing device.
BACKGROUND INFORMATION
Peripheral devices (such as keyboards, joysticks, mice, etc.) for computers have traditionally been connected to host computing devices via communication cables. Data transfer between such “tethered” peripheral devices and their host computers is thus via the connecting cables. Recently, however, wireless peripheral devices have begun emerging. These new wireless peripheral devices communicate with their host computers via, e.g., high frequency (HF), radio frequency (RF), and infrared (IR) communication signals.
Before a wireless peripheral device can be used in conjunction with a particular processor-based host computer, a communication channel must be established between the peripheral and the host. Establishment of such a communication channel requires that the host detect the presence of the peripheral, and then “bind” the peripheral. The few wireless peripheral devices currently available require a cumbersome manual binding technique between the peripheral and the host, whereby a user, via a tethered peripheral device (such as a keyboard), manually notifies the host of the presence of the wireless peripheral and initiates the binding process.
SUMMARY OF THE INVENTION
Embodiments of the present invention provide a “Plug and Play” type dynamic detection and binding capability for wireless peripheral devices. The present dynamic detection and binding capability is accomplished without manual intervention, and without modifications to the host computing device's built-in operating system (BIOS).
According to the present invention, dynamic detection and binding of a wireless peripheral device by a host is accomplished by transmitting a Device_Hail message, waiting for a Hail_Response message from a peripheral, and upon the reception of such a Hail_Response message, assigning a Peripheral Address to the responding peripheral and transmitting it to the peripheral in a Peripheral_Address_Allocation message.


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