Telecommunications – Radiotelephone system – Programming control
Reexamination Certificate
1997-03-06
2001-10-23
Tsang, Fan S. (Department: 2746)
Telecommunications
Radiotelephone system
Programming control
C455S556200, C455S557000, C455S563000
Reexamination Certificate
active
06308062
ABSTRACT:
BACKGROUND OF THE INVENTION
1. Technical Field of the Invention
The present invention relates to wireless telephony systems, and more particularly, to a system enabling a link to be formed between portable wireless devices and a personal computer enabling the portable wireless devices to access software functionalities provided by the personal computer.
2. Description of Related Art
Home cordless telephones and hand-held cellular telephones provide users with basic telephony functions. On their own, cordless and hand-held cellular telephones provide users with the basic abilities to call out and receive calls and further provide a few additional functionalities such as hook switch and flash button that enable a home cordless or hand-held cellular telephone user to access in-phone features such as a dialing memory. Thus, these types of phones provide a user with basic but limited functionalities.
The telecommunications industry has developed a variety of applications and functionalities that expand the manner in which telephone calls may be processed. Services such as call logging, voice mail, e-mail, intelligent call routing, and others, have greatly increased the manner in which telephony services may be used. Unfortunately, presently existing systems providing these types of services are normally provided via dedicated hardware that implements all of the desired services within a single dedicated hardware unit. Systems of this type are usually very expensive, thus limiting their use to businesses having the necessary funds to purchase and maintain such systems. A personal user, or even a small business, does not have the resources necessary to implement these types of hardware intensive telephony services on their own. Thus, some manner of enabling personal or small business users to incorporate a wider variety of telephony services and features within their existing cordless or personal use phones/electronic devices at a reasonable cost would be of great benefit.
SUMMARY OF THE INVENTION
The present invention overcomes the foregoing and other problems with a system providing a user wireless access to a variety of software functionalities within a personal computer. The system consists of three main portions, namely a portable device enabling wireless access, a radio-fixed part for processing and transmitting/receiving the wireless signal to/from the portable device and a high speed serial bus for interconnecting the radio-fixed part with the personal computer and the software functionalities.
A user operating a portable device such as a cordless handset, dual-mode cordless handset, PDA or operate portable laptop computer generates control commands to operate various software functionalities residing within an attached computer. The control commands may consist of digitally encoded data, DTMF or voice commands. These control commands are transmitted to the fixed radio part of the system as a wireless signal. The fixed radio part processes the control command signals from the portable device and transmits these control commands to the attached personal computer via a high-speed serial bus. The high-speed serial bus may operate according to a variety of protocols as long as the bus is capable of supporting isochronous signals. The fixed radio part may also be configured to receive/send control commands and data through a PSTN network via a PSTN interface. This interface would enable interaction with a PSTN line, ISDN line or access to the Internet.
Associated with the personal computer is an interface responsive to the control commands received from the portable device that enables access to the software functionalities provided by the personal computer. The interface is responsive to commands received from a remote user accessing the personal computer via a PSTN or ISDN line.
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International Search Report, Jul. 17, 1998, ISA.
Chien Andrew Ying-Tsai
Wang James
Ericsson Business Networks AB
Sobutka Philip J.
Tsang Fan S.
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