Electrical computers and digital data processing systems: input/ – Input/output data processing – Input/output addressing
Reexamination Certificate
1998-06-24
2001-10-23
Lee, Thomas (Department: 2100)
Electrical computers and digital data processing systems: input/
Input/output data processing
Input/output addressing
C710S003000, C710S008000, C710S009000, C710S105000, C710S106000, C709S227000, C709S228000
Reexamination Certificate
active
06308227
ABSTRACT:
BACKGROUND
The invention relates generally to the use of wireless peripheral devices with a host computing system.
Peripheral devices such as keyboards, joysticks, and mice have traditionally been connected to a host computer system by communication cables. Data transfer between such “tethered” peripherals and a host computer system have been via these cables. Recently, the use of wireless peripheral devices has emerging. These new peripheral devices may communicate with their host computer system through, e.g., high frequency (HF), radio frequency (RF), or infrared (IR) communication signals.
Before a wireless peripheral device can communicate with a host computer system, a communication channel between the two must be established. Establishment of a communication channel typically requires the host to detect the presence of the peripheral device, and then to exchange identifiers so that the computer system and device may uniquely identify one another for data transfer operations. Wireless devices currently available require users to manually identify untethered devices to a computer system before they may be used. Thus, it would be beneficial to provide an automated and dynamic technique to identify wireless peripherals, and to associate those peripherals with unique identifiers, so that they could establish communication with a host computer system.
SUMMARY
In one embodiment, the invention provides a method to detect a wireless peripheral device by a host computer system and may include the steps of retrieving a persistent host identifier, transmitting a message that includes the host identifier to the wireless peripheral device, and receiving a response message from the wireless peripheral device. The persistent host identifier may be stored in a persistent memory such as, for example, nonvolatile random access memory. Transmitting a message may comprise generating an electromagnetic signal (e.g., high frequency, radio frequency, or infrared) representative of the message. The method may further include retrieving a wireless peripheral device identifier, and including it in the transmitted message. The method may further include generating a host address prior to transmitting the message, and including the generated host address in the hail message.
In another embodiment, the invention provides a method to automatically detect and bind a wireless peripheral device by a host computer system including generating a host address, retrieving a persistent host identifier, retrieving a persistent wireless peripheral device identifier, transmitting a first message to the wireless peripheral device that incorporates the host identifier, the host address, and the wireless peripheral device identifier, receiving a response message from the wireless peripheral device, and transmitting a second message to the wireless peripheral device that includes the peripheral device address.
Methods in accordance with the various embodiments of the invention may be implemented by computer readable instructions stored in any media that is readable and executable by a computer system.
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Infrared Bus (irBus) Specification IrDA CIR (Control IR) Standard, Final Revision 1.0d, Feb. 25, 1998.*
Infrared Bus (IrBus) SpecificationIrDA CIR(Control IR)Standard,Final Revision 1.0d, Feb. 25, 1998; Copyright 1997, 1998, HP Intel, Microsoft, Sharp.
Choudhary Rajiv
Kumar Mohan J.
Intel Corporation
Lee Thomas
Park Ilwoo
Trop Pruner & Hu P.C.
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