International Business Machines Corporation

Pacific Communication Sciences, Inc.

Bradley J DeBauche

James Robert Lewis

Francis James Canova, Jr

David J Allard

Raymond L Yee

Charles S Lanier

Byron K Tiller

Debra A Johnson

Brent A Beatty

William Villafana

Paritosh Dinubhai Patel

Jose L Rivero

Steve Harris Weingart

Robert G Baker

Chris Dombrowski

Julie F Goodwin

Lloyd H Massman

Neal A Osborn

Daniel Ming-Te Hsieh

Paul R Swingle

Robert Bedford Ferrier

Wayne P Whitley

Roger L Cox

Thomas T Murakami

Jean Luter Stout

Connie Yudip Au

James Christian Wulf

Russell Stephen Padgett

Danile M Hsieh

Melvin McCain

Anthony F Corkell

Eric Jensen

A port connector of a computing system is provided with a flexible electrical contact for determining the presence of the electrically grounded flange of a cable connector which may be attached to the port connector. Using this feature, the computing system can determine whether a peripheral device is attached to the port connector by means of a cable.

Apparatus for detecting cable attachment

A system and method for increasing the available energy and system runtime of battery powered electric devices which use non-rechargeable cells as an energy source. The present invention employs techniques for using energy from both rechargeable and non-rechargeable batteries in a manner which discharges each of the different cells within their optimal discharge rate. In particular, the non-rechargeable batteries are used for a low rate of system discharge and rechargeable cells supplement the non-rechargeable batteries for a higher system loads. In a preferred embodiment of the present invention, when the system load is at a very low level, the rechargeable battery is recharged using power from the non-rechargeable battery. The result of the techniques of the present invention is the lowering of discharge rate and hence increasing the capacity of the non-rechargeable cell.

System and method for increasing the available energy in

An option attach connector has a first indicator bit combination that alerts the device that a public switched telephone network connection has been made to it. The presence of the first indicator bit combination is a signal to the device that telephone, FAX, and E-MAIL communications applications are to be conducted over a PSTN link. The presence of the first indicator bit combination invokes a stored computer program to provide appropriate connections between the PSTN link and the telephone, FAX, and modem hardware in the device. The connections are made by an audio multiplexer that receives control signals from the system CPU, while executing the stored computer program. The program determines the communications application selected by the user and selectively configures the PSTN link to be connected to the either the ear piece and microphone for voice communications, or to the FAX/modem for FAX communications, or to the modem alone for E-MAIL communications. The absence of the option attach connector invokes a default indicator bit combination that alerts the device that a cellular telephone network connection is desired by the user. The presence of the default indicator bit combination is a signal to the device that telephone, FAX, and E-mail communications applications are to be conducted over a cellular network.

Selective reconfiguration method and apparatus in a multiple application

A personal communicator has a touch sensitive overlay coupled with a liquid crystal display (LCD). The communicator has two external (non-screen) up/down buttons for adjusting the volume of a cellular phone speaker. These volume buttons are also used to allow the user to adjust contrast. In accordance with one operation, contrast is adjusted in response to the user touching a predetermined area of the screen at the same time as one of the up or down buttons is actuated. In accordance with another operation, contrast is adjusted in response to the user first pressing both speaker volume buttons to enter a contrast adjustment mode, and thereafter pressing one or the other of such buttons, to increase or decrease contrast as desired.

Personal communicator having improved contrast control for a liquid

A personal computer system includes a digital signal processor (DSP) subsystem that is connectable to a plurality of application specific hardware devices. A single DSP is operable under a DSP real-time operating system (RTOS) to concurrently handle a plurality of different signal processing functions on a real-time basis. A DSP data store is connected to the DSP and to the personal computer and includes addressable locations that emulate addressable I/O registers associated with the application specific hardware devices to enable the personal computer to run a plurality of application programs controlling operation of the hardware devices. Performance is enhanced for I/O read and write operations by delaying halting of the DSP allowing such operations to complete in a cycle during which the DSP is not accessing the data store.

Real-time, concurrent, multifunction digital signal processor subsystem

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Delray Beach, FL, United States of America

Bradley J DeBauche