Method and apparatus for synchronizing and recharging a
Contents
1. osun NITH S NO JIITWAN VHdTE 66 W TIILTIOA NON WS m 0 4 044 102 191010 NOLLYOINANINOD SSTITIIM U S Patent Jun 20 2006 Sheet 3 of 9 US 7 065 658 B1 300 FIGURE 3 U S Patent Jun 20 2006 Sheet 4 of 9 US 7 065 658 B1 ENDE e FIGURE 4 US 7 065 658 B1 Sheet 5 of 9 Jun 20 2006 U S Patent LON 0 V JOYLT0A AYNSIS U S Patent Jun 20 2006 Sheet 6 of 9 US 7 065 658 B1 600 630 300 650 FIGURE 6 U S Patent Jun 20 2006 Sheet 7 of 9 US 7 065 658 B1 100 FIGURE 7 U S Patent Jun 20 2006 Sheet 8 of 9 US 7 065 658 B1 FIGURE 8 800 U S Patent Jun 20 2006 Sheet 9 of 9 US 7 065 658 B1 900 PLACE A PORTABLE COMPUTER SYSTEM ONTO A CRADLE COMPRISING AN INDUCTION CHARGING SYSTEM FOR CHARGING AN INTERNAL BATTERY OF THE PORTABLE COMPUTER SYSTEM CHARGING MAY COMMENCE IMMEDIATELY AND LED WILL INDICATE ANY CHARGING ACTIVITY A USER PRESSES A BUTTON ON THE CRADLE TO INVOKE WIRELESS COMMUNICATION E C SYNCHRONIZATION WITH A HOST COMPUTER SYSTEM TO PERFORM DATA SYNCHRONIZATION WITH THE HOST COMPUTER SYSTEM FIGURE 9 US 7 065 658 B1 1 METHOD AND APPARATUS FOR SYNCHRONIZING AND RECHARGING A CONNECTOR LESS PORTABLE COMPUTER SYSTEM BACKGROUND OF THE INVENTION 1 Field of the Invention The present invention relates to the field of computer systems and data comm2. being recharged The device can be manufac tured such that it is resilient to adverse climate conditions The foregoing description of specific embodiment of the present invention has been presented for purpose of illus tration and description They are not intended to be exhaus tive or to limit the invention to the precise form disclosed and obviously many modifications and variations are pos sible in light of the above teaching The embodiments were chosen and described in order to best explain the principles of the invention and its practical application to thereby enable others skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated It is intended that the scope of the invention be defined by the claims appended hereto and their equivalents What is claimed is 1 A portable computer system comprising a processor coupled to a bus a memory unit coupled to said bus a flat panel display screen coupled to said bus an internal battery a wireless induction charging system for providing an inductive recharging to recharge said internal battery and a wireless communication port which is separate from said wireless induction charging system for commu nicating with a host computer system to perform data synchronization while said inductive recharging occurs and a housing for containing said processor said memory unit said flat pane
3. commence imme diately upon the system 110 being placed onto cradle 300 FIG 8 illustrates a wireless communication session between portable computer system 110 and host device 155 It is appreciated that in one embodiment of the present invention a physical serial communication port is eliminated and replaced with a wireless communication port capable of communication with other devices by any of a number of well known wireless communication standards and proto cols e g parallel USB SCSI Firewire IEEE 1394 Ethernet etc In the example of FIG 8 synchronization may take place while recharging occurs It is appreciated that cradle 300 need not be connected to host computer 155 by any physical means as shown by 850 FIG 9 is a flow diagram of the steps in a process 900 for induction charging and wirelessly communicating with a handheld computer system In step 910 portable computer system is placed onto a cradle comprising an induction charging system for charging an internal battery of the portable computer system Charg ing may commence immediately and LED 331 will indicate any charging activity Step 920 in accordance with the present invention a user pressing a button on the cradle 300 invokes a wireless communication e g synchronization with a host computer system to perform data synchronization with the host com puter system For example a portable computer system can be equipped with one of several wireless technolog
4. drawing of numeric characters therein and not for alphabetic characters for automatic recognition Note that device 110 contains no physical connector for either synchronization or charging FIG 5 illustrates the backside of a portable computer system e g a palm sized computer system 110 without its back cover In one embodiment of the present invention portable computer system 110 uses wireless technology for all communications between portable computer system 110 and all other devices equipped to receive such wireless communication In this embodiment of the present inven tion any serial connectors are eliminated because portable computer system 110 uses wireless technology e g GSM with Short Massage Service SMS NBS Narrow Band Sockets cellular technologies e g TDMA LAN access technologies e g IEEE 802 11 Home RF and PAN technologies e g Bluetooth IR for any type of host computer communication FIG 6 depicts induction charging system 600 used in this embodiment of the present invention In FIG 6 the portable computer system 110 is placed onto the cradle 300 neither device has physical connector Portable computer system 110 of FIG 1 includes secondary coil 620 of transformer 20 25 30 35 40 45 50 55 60 65 6 550 of FIG 5 Secondary coil 620 is electrically coupled to rechargeable battery 610 Primary coil 630 is electrically coupled to an alternating current sour
5. e g a radio interface The PDA 110 is one exemplary implementation on which the present invention can operate although the present invention can operate on any portable electronic system or device In one embodiment base station 155 is both a transmitter and receiver base station which can be implemented by coupling it into an existing public telephone network 154 Implemented in this manner base station 155 enables the personal digital assistant 110 to communicate with a proxy server computer system 158 which is coupled to the existing public telephone network 154 Furthermore proxy server computer system 158 is coupled to the Internet 152 thereby enabling the PDA 110 to communicate with the Internet 152 It should be further appreciated that other embodiments of a communications network may be utilized in accordance with the present invention The data and information which are communicated between base station 155 and the personal digital assistant 110 are any type of information and data that can conven tionally be transferred and received over a public telephone wire network system However a wireless communication interface is utilized to communicate data and information between the PDA 110 and base station 155 It should be appreciated that one embodiment of a wireless communica tion system in accordance with the present invention is the Mobitex wireless communication system FIG 2 illustrates circuitry of portable computer
6. is separate from said wireless induction charging system for commu nicating with a host computer system to perform data synchronization while said inductive recharging occurs and a housing for containing said processor said memory unit said liquid crystal display screen said wireless com munication port said internal battery and said wireless induction charging system said housing being free of any physical connectors that provide mechanical con nection to another electronic device wherein said por table computer system is a handheld personal digital assistant 10 A portable computer system as described in claim 9 wherein said wireless communication port in an infrared port 11 A portable computer system as described in claim 9 wherein said wireless communication port is a Bluetooth wireless port 12 A portable computer system as described in claim 9 wherein said wireless communication port is a wireless LAN wireless port 13 A portable computer system as described in claim 9 wherein said wireless communication port is a wireless radio port compliant with the CDMA protocol 14 A portable computer system as described in claim 9 that is water tight 15 A method of performing communication comprising placing a portable computer system that is free of any physical connectors that provide mechanical and elec a 5 20 25 10 trical connection to another electronic device onto a cradle comprising an induction
7. United States Patent US007065658B1 12 10 Patent No US 7 065 658 B1 Baraban et al 45 Date of Patent Jun 20 2006 54 METHOD AND APPARATUS FOR 6 389 423 B1 5 2002 Sakakura 707 10 SYNCHRONIZING AND RECHARGING A 6 405 049 B1 6 2002 Herrod et al 2 455 517 CONNECTOR LESS PORTABLE COMPUTER 6 445 936 B1 9 2002 Cannon et al 455 573 SESTEM FOREIGN PATENT DOCUMENTS 75 Inventors Matthieu Baraban Saint Jean De EP 0 395 469 10 1990 Vedas FR Yann Cheri Montpellier FR 2 601 161 1 1988 FR OTHER PUBLICATIONS 73 Assignee Palm Incorporated Sunnyvale CA Opticon User s Manual DWT 7133 Nov 2000 US e W et al ablet Personal Computer in the Year US Mel B W et al Tablet Personal C in the Y 2000 Communications of the Association for Computing Notice Subject to any disclaimer the term of this Machinery New York NY vol 31 No 6 Jun 1 1988 pp patent is extended or adjusted under 35 639 646 XP000047633ISSN 0001 0782 U S C 154 b by 479 days b by cited by examiner 21 Appl No 09 861 276 Primary Examiner Chun Cao Assistant Examiner Albert W 22 Filed May 18 2001 ssistant Examiner 57 ABSTRACT 51 Int CI 67 ESTRA G06F 1 26 2006 01 A ruggedized connector less cordless portable computer H02J 7 00 2006 01 system is disclosed In one embodiment the portable com 52 U S Ck aaae 713 300 320 108 455 556 2 puter sys
8. ain batteries replaceable cells or rechargeable batteries for providing electrical power Well known electronic devices may be coupled to the battery to detect its energy level and the processor 201 can sample this information FIG 3 is a perspective illustration of an electronic cradle 300 One embodiment of the present invention electronic cradle includes a primary coil of an induction transformer as shown in 550 of FIG 5 Electronic cradle 300 is electrically coupled to an alternating current source through an electrical cord 310 Recessed area 320 of electronic cradle 300 is designed to receive portable computer system 110 but contains no connectors Electronic cradle 300 also includes a user interface 330 to activate synchronization function between portable computer system 110 of FIG 1 and host device 155 of FIG 1 A small LED 331 may indicate charging FIG 4 is an illustration of the top face 410 of one embodiment of a portable computer system 110 e g a palm size handheld computer system The top face 410 contains a display screen 405 surrounded by a cover 406 The display screen 405 is a touch screen able to register contact between the screen and the tip of a stylus FIG 4 also illustrates a handwriting recognition pad or digitizer con taining two regions 406a and 4065 Region 406a is for the drawing of alphabetic characters therein and not for numeric characters for automatic recognition and region 406d is for the
9. and also teaching in A METHOD AND APPARATUS FOR SYNCHRONIZ ING INFORMATION ON TWO DIFFERENT COM PUTER SYSTEMS U S Pat No 5 832 489 issued to Kucala on Nov 3 1998 both of which are hereby incorpo rated herein by reference Synchronization is also described in METHOD AND APPARATUS USING A PASS THROUGH PERSONAL COMPUTER CONNECTED TO BOTH A LOCAL COM MUNICATION LINK AND A COMPUTER NETWORK FOR IDENTIFYING AND SYNCHRONIZING A PRE FERRED COMPUTER WITH A PORTABLE COM PUTER USS Pat No 6 006 274 issued to Hawkins et al on Dec 21 1999 hereby incorporated herein by reference The owner of a palm size computer system and a personal computer system may further wish to share files between portable computer systems and personal computer systems An easy to use extendible file synchronization system is described in EXTENDIBLE METHOD AND APPARA TUS FOR SYNCHRONIZING FILES ON TWO DIFFER ENT COMPUTER SYSTEMS U S Pat No 5 884 323 issued to Hawkins et al on Mar 16 1999 hereby incorpo rated herein by reference A single button press can initiate the synchronization of information between the two sys tems In this embodiment of the present invention synchroni zation process is by means of wireless communication thus the devices need not be physically connected and the need for serial connector is eliminated Furthermore the rechargeable battery inside the portable computer system can be recharged by means of induction
10. anizer with the capability to store telephone numbers addresses daily appointment and soft ware that keeps track of business or personal data such as expenses etc Furthermore the PDA also has the ability to connect to a personal computer enabling the two devices to exchange updated information that is synchronizing the information between the two devices Additionally the PDA can also be connected to a modem enabling it to have electronic mail e mail capabilities over the Internet along with other Internet capabilities Moreover an advanced PDA can have Internet capabilities over a wireless communica tion interface e g radio interface In particular the PDA can be used to browse Web pages located on the Internet The PDA can be coupled to a networking environment It should be appreciated that embodiments of the present invention are well suited to operate within a wide variety of electronic systems e g computer systems which can be communicatively coupled to a networking environment including cellular phones pagers etc FIG 1 is a block diagram of an exemplary network environment 100 including an exemplary Personal Digital Assistant PDA 110 The PDA 110 is also known as a 20 25 30 35 40 45 50 55 60 65 4 palmtop or palm sized electronic system or portable com puter system The PDA 110 has the ability to transmit and receive data and information over a wireless communication interface
11. ay be used in a very moist environment or left in a place where humidity is very high or the user of a device may inadvertently expose a portable computer to water The present portable electronic devices are not protected against such adverse atmospheric environments The consumer 0 an 5 40 45 55 60 65 2 requirements for a device resilient to adverse climate con ditions have not even been addressed Thus a need exists for a portable computer system capable of wireless interconnectivity with other similar devices or with host computers which are capable of transceiving wireless communications Furthermore a need exist for a portable computer with wireless interconnectivity which can withstand adverse climate condition by minimizing expo sure of its internal components to adverse climate condi tions Additionally a need exist for a user friendly device a device that is easily portable and conveniently rechargeable SUMMARY OF THE INVENTION The present invention enables an owner of a handheld electronic device to have a wide range of wireless intercon nectivity in a ruggedized connector less platform The present invention further provides a handheld computer system with an induction charging system enabling the user of the device to recharge the device without the need of connectors or wires Furthermore use of induction charging system in combination with wireless synchronization allows manufacturers t
12. ce 650 within the cradle 300 Alternating electric current flowing in primary 630 induces voltage in secondary coil 620 which in turn charges rechargeable battery 610 as shown in FIG 7 FIG 7 illustrate recharging of rechargeable battery 610 of FIG 6 Portable computer system 110 is placed onto elec trical cradle 300 of FIG 3 Primary coil 630 of transformer 550 of FIG 5 is electrically coupled to alternating source of power 650 of FIG 6 through an electrical cord 310 of FIG 3 Electronic cradle 300 does not include any metal or otherwise physical contact to cause recharging rechargeable battery 610 inside portable computer system 110 The recharging process is through induction system Likewise system 110 is connector less Connector less portable computer system 110 is placed onto electronic cradle 300 as shown in FIG 7 thus bringing secondary coil 620 and primary coil 630 within a short distance of each other When Primary coil 630 is connected to alternating current source 550 the current flow in primary coil induces voltage in secondary coil 620 and the induced voltage charges rechargeable battery 610 It is appreciated that the induction system used for charging battery 610 does not require portable computer 110 to be removed from its protective casing nor does it require any metallic or physical contact or connector between electronic cradle 300 and portable computer system 110 When the cradle 300 is plugged in charging may
13. charging system The cordless induction charging system and wireless com munication allows the manufacturer of palm size computer system to manufacture a watertight device which is rugge dized e g can withstand adverse climate e g those of high moisture content without degradation A ruggedized connector less portable computer as dis closed by the present invention provides the owner of these devices with a more durable device Such a connector less device is protected against a broken connector or corroded connector simply because no metallic or physical connector is used for either recharging the battery or for synchroniza tion Additionally an owner of such a connector less device will not face a problem of disrupted communication caused by a corroded connector Furthermore such a ruggedized device substantially eliminates any problem resulting from rain water moisture broken or corroded connectors which may hinder the operation of similar devices not protected as such In summary the present invention provides a method and a system that can wirelessly recharge a battery inside a 20 25 30 35 40 45 50 55 65 8 portable computer system In accordance with the present invention the portable computer system is equipped to communicate with other devices which are equipped to receive information Furthermore the present invention dis closes a cordless device and without any exposed metal contact for
14. charging system for performing an inductive recharging an internal battery of said portable computer system and pressing a button on said cradle to invoke a wireless communication system separate from said induction charging system with a host computer system to per form data synchronization with said host computer system while said inductive recharging occurs 16 The method as described in claim 15 wherein said cradle is free of any physical connection with said host computer system 17 A method as described in claim 15 wherein said wireless communication is implemented using infrared com munication 18 A method as described in claim 15 wherein said wireless communication is implemented using Bluetooth wireless communication 19 A method as described in claim 15 wherein said wireless communication is implemented using wireless LAN communication 20 A method as described in claim 15 wherein said wireless communication is implemented using wireless radio communication that is compliant with the CDMA protocol
15. evice 280 is capable of registering a position on the screen 260 where the stylus makes contact and the pressure of the contact The display device 260 utilized with the computer system 110 may be a liquid crystal device cathode ray tube CRT field emission device FED also called flat panel CRT or other display device suitable for creating graphic images and alphanumeric characters recognizable to the user Any of a number of display technologies can be used e g LCD FED plasma etc for the flat panel display 260 In one US 7 065 658 B1 5 embodiment the display 260 is a flat panel multi mode display capable of both monochrome and color display modes Wireless communication device IR IR 201 is included in the device 110 for communication with a host computer system 155 of FIG 1 or another portable computer system using an infrared device System 110 may also include a wireless modem device 222 and or a wireless radio 210 e g a GSM wireless radio with supporting chipset The wireless modem device 222 is coupled to communicate with the processor 220 A Bluetooth wireless communication port 250 can also be included In one implementation the Mobitex wireless communi cation system may be used to provide two way communi cations between system 110 and other networked computers and or the Internet via a proxy server 158 of FIG 1 In other embodiments TCP protocol can be used or SMS can be used System 110 may also cont
16. f needs and provide different set of potential services Many different applications are currently being developed for portable computer systems in order to make use of the wireless communication features offered by these platforms The popularity of portable computers caused favorable changes in manufacturing forecasts and manufacturing plans to satisfy the market demands However along with such increase in popularity came the consumer demand for new features features commensurate with the nature and method of use of portable devices The consumers demanded a smaller in size portable computer to ease portability a larger size memory to satisfy the ever increasing applications supported by these portable computers a longer lasting power supply to enable the users an uninterrupted sessions with a portable computers and finally a device resilient to adverse climate conditions Regardless of all efforts by different manufacturers to satisfy the consumer s demands the devices available in the marketplace are yet to address one important consumer demand a portable computer with wireless capability and resilient to adverse climate conditions Typically portable electronic devices are employed while the user is on the run e g in business meetings on business travel personal travel in a vehicle on foot etc These devices are commonly accepted and are being used through out a year and under different atmospheric conditions A device m
17. ies e g GSM with Short Massage Service SMS NBS Narrow Band Sock ets cellular technologies e g CDMA TDMA LAN access technologies e g IEEE 802 11 Home RF and PAN technologies e g Bluetooth IR thus capable of perform ing wireless synchronization The same portable computer system may be equipped to synchronize information with other computer system equipped similarly Many users of portable computer systems also own per sonal computers Often a user runs applications in one system which are similar to the applications and data in US 7 065 658 B1 7 their other computer systems A user who owns both a palm size computer system and a personal computer in similar circumstances may wish to run an application in one system and update the other system accordingly without running the same application in the second computer system In one embodiment of the present invention one computer system wirelessly synchronizes data with another computer system using well known processes For example a user updates the calendar in portable computer system and updates the cal endar in the personal computer system The user does not need to run that same application on his her personal com puter Such an update is possible through synchronization in accordance with teaching of A METHOD AND APPARA TUS FOR SYNCHRONIZING INFORMATION ON TWO DIFFERENT COMPUTER SYSTEM U S Pat No 5 727 202 issued to Kucala on Mar 10 1998
18. l display screen said wireless communi cation port said internal battery and said wireless induction charging system said housing being free of any physical connectors that provide mechanical con nection to another electronic device 2 A portable computer system as described in claim 1 wherein said wireless communication port in an infrared port 3 A portable computer system as described in claim 1 wherein said wireless communication port is a Bluetooth wireless port 4 A portable computer system as described in claim 1 wherein said wireless communication port is a wireless LAN wireless port 5 A portable computer system as described in claim 1 wherein said wireless communication port is a wireless radio port compliant with the CDMA protocol 6 A portable computer system as described in claim 1 wherein said portable computer system is a handheld per sonal digital assistant 7 A portable computer system as described in claim 1 that is water tight 8 A portable computer system as described in claim 1 wherein said flat panel display screen is a liquid crystal display screen 9 A portable computer system comprising a processor coupled to a bus a memory unit coupled to said bus a liquid crystal display screen coupled to said bus an internal battery a wireless induction charging system for providing an inductive recharging to recharge said internal battery US 7 065 658 B1 9 a wireless communication port which
19. m connected to other com puter systems and the Internet via a wireless communication link FIG 2 is a logical block diagram of an exemplary portable computer system in accordance with an embodiment of the present invention FIG 3 is a perspective illustration of the top face of one embodiment of an electronic cradle without metal contacts for recharging the portable computer s rechargeable battery using induction charging FIG 4 is an illustration of the top face of an exemplary Personal Digital Assistant PDA FIG 5 is an illustration of the bottom side of a handheld computer system including secondary coil of a transformer and without serial connector US 7 065 658 B1 3 FIG 6 is a schematic representation of a portable com puter system with a secondary coil of the transformer and an electronic cradle including a primary coil of the transformer FIG 7 depicts a portable computer system placed onto an electronic cradle for induction charging of the battery in the portable computer system FIG 8 illustrate a wireless communication session between the handheld computer system and a host device FIG 9 is a flow diagram of the steps in a process 800 for induction charging and wirelessly communicating with a handheld computer system DETAILED DESCRIPTION OF THE INVENTION Reference will now be made in detail to the preferred embodiments of the present invention a method and appa ratus for synchronizing and recharging a c
20. o build a watertight portable computer sys tems A ruggedized cordless portable computer system is dis closed In one embodiment the portable computer system includes ports adapted to use wireless technology e g GSM CDMA LAN Bluetooth and infrared for synchronization with a host computer system Furthermore the device is adapted to have a rechargeable battery that does not require a connector In one embodiment of the present invention the portable computer system may be a handheld device and includes a secondary coil of a transformer where the trans former s primary coil resides in an electronic cradle The portable computer s rechargeable battery is recharged through an induction charging system The wireless com munication and charging system enables a manufacturer to provide a device that is watertight and ruggedized e g resilient to adverse climate conditions More specifically an embodiment of the present invention includes a portable computer system comprising a a pro cessor coupled to a bus b a memory unit coupled to the bus c a flat panel display screen coupled to the bus d a wireless communication port for communicating with a host com puter system to perform data synchronization e an internal battery and f a wireless charging system for providing charge to the internal battery BRIEF DESCRIPTION OF THE DRAWINGS FIG 1 is an illustration of a portable computer system or a palm sized computer syste
21. ordless handheld personal information system examples of which are illus trated in the accompanying drawings While the invention will be described in conjunction with the preferred embodi ments it will be understood that they are not intended to limit the invention to these embodiments On the contrary the invention is intended to cover alternatives modifications and equivalents which may be included within the spirit and scope of the invention as defined by the appended claims Furthermore in the following detailed description of the present invention numerous specific details are set forth in order to provide a thorough understanding of the present invention However it will be recognized by one of ordinary skill in the art that the present invention may be practiced without these specific details In other instances well known methods procedures components and circuits have not been described in detail as not to unnecessarily obscure aspects of the present invention Exemplary Palmtop Computer System Platform The present invention is compatible with any electronic device having a wireless or other communication mecha nism and organized records of information such as a cell phone or a pager One of the common types of electronic systems which can be used in accordance with one embodi ment of the present invention is referred to as a personal digital assistant or commonly called a PDA The PDA is a pocket sized electronic org
22. system 200 Portable computer system 110 includes an address data bus 99 for communicating information a central processor 220 coupled with the bus 99 for processing information and instructions a volatile memory 240 e g random access memory RAM coupled with the bus 99 for storing infor mation and instructions for the central processor 220 and a non volatile memory 230 e g read only memory ROM coupled with the bus 99 for storing static information and instructions for the processor 220 Computer system 110 also includes an optional removable data storage device 295 e g thin profile removable memory coupled with the bus 99 for storing information and instructions As described above system 110 also contains a display device 260 coupled to the bus 99 for displaying information to the computer user Also included in computer system 200 is an alphanumeric input device 270 which in one implementation is a hand writing recognition pad digitizer having optional regions 406a and 4065 as shown in FIG 4 for instance Device 270 can communicate information spatial data and pressure data and command selections to the central processor 220 System 110 also includes an optional cursor control or directing device 280 coupled to bus 99 for communicating user input information and command selections to central processor 220 In one implementation device 280 is a touch screen device also a digitizer incorporated with screen 260 D
23. tem includes ports adapted to use wireless technol 455 573 707 203 ogy e g GSM CDMA LAN Bluetooth and infrared for 58 Field of Classification Search 320 108 synchronization Furthermore the device may bea palm Ree 455 556 2 707 205 sized device having a rechargeable battery In one embodi See application file for complete search history ment of the present invention the portable computer system includes a secondary coil of a transformer where the trans 56 References Cited former s primary coil resides in an electronic cradle The U S PATENT DOCUMENTS portable computer s rechargeable battery is recharged through an induction charging system The wireless com 5 375 226 A 12 1994 Sano et 395 500 munication and induction charging system enables a device i ac ao M that is connector less and therefor watertight and resilient to D in oye 6 138 245 A 10 2000 Son et al 713 400 climate conditions 6 266 539 B1 7 2001 455 556 2 6 330 436 B1 12 2001 714 1 455 4122 20 Claims 9 Drawing Sheets 800 U S Patent Jun 20 2006 Sheet 1 of 9 US 7 065 658 B1 FIGURE 1 US 7 065 658 B1 Sheet 2 of 9 Jun 20 2006 U S Patent 962 euondo J9IATQ JOWUOLS YLYC 082 HLOOL 1114 062 NYT SSTITHIM orc WHY JANIA 082 012 101100
24. unication More specifically embodi ments of the present invention relate to the field of portable electronic devices such as personal digital assistants PDAs cell phones pagers etc 2 Related Art The demand for use of computers has steadily grown over the period of the past several decades The ever increasing demand in use of the computers and widespread reliance of individuals as well as business entities on computers along with the reduction in the size of the components led to the innovation of portable computer systems Shortly after the introduction of the portable computers to the marketplace the users of these devices demanded flexibility in their use and portability Consumers seeking mobility of their por table computers require wireless interconnectivity Manufacturers in general provide portable computer systems equipped with wireless technology Most all por table computers in the marketplace nowadays are equipped with some means of wireless communication More specifi cally wireless technology is advancing both in the number of options that are available for providing connectivity and in their flexibility to provide general purpose data commu nication Different technologies such as GSM with Short Massage Service SMS NBS Narrow Band Sockets cellular technologies e g CDMA TDMA LAN access technologies e g IEEE 802 11 Home RF and PAN tech nologies e g Bluetooth IR each address different set o
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