Telecommunications – Radiotelephone system – Programming control
Reexamination Certificate
1996-02-14
2001-09-11
Maung, Nay (Department: 2681)
Telecommunications
Radiotelephone system
Programming control
C455S556200, C455S557000
Reexamination Certificate
active
06289213
ABSTRACT:
FIELD OF THE INVENTION
The present invention is directed to a computer system that has at least two computers which are connected via a cordless telephone and applications thereof.
BACKGROUND
There are a variety of schemes for connecting personal computers. They vary from the traditional point-to-point connection using wires between two computers to wireless local-area-network for a whole array of computers. As hand-held personal computers get smaller, the connection requirements for these small units to their large counterparts become more unique. In this case, it is too cumbersome to use wires for connection and too expensive to use complete wireless local area network in which the software overhead is larger. Furthermore, local-area-networks are not yet ready to handle the time-bound voice signals which are likely to be common in those small hand-held units which are likely designed to handle voice signals. The computer system disclosed herein will provide data and voice connections between a hand-held computer and a regular personal computer while each one of them can communicate to outsiders via public telephone lines independently.
OBJECTS
An object of the present invention is to provide a device for a user to control, enter inputs, or retrieve outputs to or from a computer, for instance, the device can emulate a wireless mouse, or can be used as wireless microphone and loudspeaker. It is a general-purpose, programmable, wireless, and multimedia device.
Another object of the present invention is to provide a device which can be programmed as a cordless display telephone in which the incoming data can be shown on the device's display. It is not just a combination of telephone and computer. The telephone function is greatly enriched. For example, call screening and call automation can easily be implemented. Furthermore, with the built-in pressure-sensitive touch screen, a user can capture and display handwriting notes directly.
Another object of the present invention is to provide a device which divides the tasks of signal processing between two devices. In speech recognition and handwriting recognition, the voice signal is first processed on the hand-held unit, if there is no match on the signal, then it will pass to the base unit where the processing power is much higher.
Another object of the present invention is to to provide a device wherein the transmission of voice and data between the handset and the base units can be transmitted simultaneously. The voice and data are transmitted simultaneously by frequency-division or time-division multiplexing.
Another object of the present invention is to provide a device which is a combination of a display and a touch screen which allows part of a menu to be downloaded to the hand-held unit from the base unit. By looking at the display on the hand-held unit, a user can activate the menu by touching the screen. Since the display is much closer to the user, it is much easier to see and act on compared to the menu on the display of the base computer.
It is another object of the present invention to provide new means to implement a truly pocketable digital assistant for office and/or home applications. It includes the digital assistant consisting of minimal hardware, such as a speaker, a microphone, a keypad, a cordless link, and a base station comprising a PC or a workstation or a custom system with a cordless link.
It is another object of the present invention to provide new means to make cellular connection. It includes a cellular radio residing in or in the neighborhood of the base station that is used as a relay point between the digital assistant and the cellular network.
SUMMARY OF THE INVENTION
The present invention is directed to an apparatus having a first computer, a second computer and a base station. The base station is adapted for wireless communication to the first computer and the second computer. The base station has means for communication on a telephone line. The first computer has a first means for communication with the base station. The second computer has a second means for wireless communication with the base station.
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Flint Ephraim Bemis
Greier Paul Francis
Mok Lawrence Shungwei
Pence William Edward
Beck Thomas A.
Gelin Jean A.
International Business Machines - Corporation
Maung Nay
Morris, Esq. Daniel P.
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