CA2603793A1 - Concave handheld mobile device with tactile side grip - Google Patents
Concave handheld mobile device with tactile side grip Download PDFInfo
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- CA2603793A1 CA2603793A1 CA 2603793 CA2603793A CA2603793A1 CA 2603793 A1 CA2603793 A1 CA 2603793A1 CA 2603793 CA2603793 CA 2603793 CA 2603793 A CA2603793 A CA 2603793A CA 2603793 A1 CA2603793 A1 CA 2603793A1
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Abstract
A handheld wireless communication device includes features that make it easier to differentiate among various keys and to correctly select a desired key. It also includes features that make the device more comfortable to use. In particular, corner keys have decreasing height profiles to make above-adjacent keys easier to reach and distinguish.
Additionally, lowermost, outermost portions of the comer keys may be somewhat truncated. Flanking keys in a navigation row slant toward 'and are flush with peripheral edges of a navigation tool assembly and have outer edges that are higher than inner edges of adjacent outer keys. The outer edges of the flanking keys may be hump-shaped or crowned. The longitudinally central portion of the device is narrower than the ends of the device, and the comers of the device are contoured to enhance comfort in a user's hand.
Soft-touch materials are employed in hand-contacting portions of the device.
Additionally, lowermost, outermost portions of the comer keys may be somewhat truncated. Flanking keys in a navigation row slant toward 'and are flush with peripheral edges of a navigation tool assembly and have outer edges that are higher than inner edges of adjacent outer keys. The outer edges of the flanking keys may be hump-shaped or crowned. The longitudinally central portion of the device is narrower than the ends of the device, and the comers of the device are contoured to enhance comfort in a user's hand.
Soft-touch materials are employed in hand-contacting portions of the device.
Description
CONCAVE )<TANDlii[ELD MOBILE DEVYCE WIT)EI TACTILE SIDE GRIP
FIELD
This disclosure, in a broad sense, is directed toward handheld electronic devices;
and more specifically to handheld communication devices that have wireless communieation capabilities and the networks within which the wireless communics.tion devices operate. The present disclosuse fvrther relates to the ergonomics of such devices, including features which enhance a user's ability to tactilely differentiate among various keys on the device and which make such devices more comfortable in the user's palm and which facilitate thunib-manipulatiora of an included navigation too] on the device.
BACKGROUND
With the proliferation of wizeless communication systems, compatible handheld cotnmunication devices are becoming more prevalent, as well as advanced.
Wherea:s in the past such handheld communication devices were typically limited to either vuic:e transmission (cell phones) or text transmission (pagers and PDAs), today's consumer ollon demands a multifunctional device capable of performing both types of transmissions, including even sending and receiving e-mail. Furthermore, these higher-performaice devices can also be capable of sending and receiving other types of data including that which allows the viewing and use of Internet websites. These higrier level ftinctionaliiies necessarily require greater user interaction with the devices through included user interfaces (UIs) which may have originally been designed to accommodate making Fnd receiving telephane calls and sending messages over a related Short Messaging Service (SMS). As might be expected, suppliers of such mobile communication devices and -he related service providers are anxious to meet these customer requirements, but i:he demands of these more advanced functionalities have in many circumstances rendered ihe traditional user interfaces unsatisfactory, a situation that has caused designers to have to improve the Uls through which users input information and control these sophisticated operations.
Keyboards are used on many handheld devices, including telephones and mobile communication devices. The size of keyboards has been reduced over the years, as newer, smaller devices h,ave become popular. Cell phones, for example, are now sized to fit in one's pocket or the palm of the hand. As the size of the devices has decreased, the more important it has become to utilize the entire keyboard surface as efficiently as possible.
Many keyboards on mobile devices have an input device for navigation thrcugh the graphical user interface. These interfaces include such devices as trackballs and rotating wheels which can be used to effect movement of a cursor or pointer, or to scroll up, down and about a displayed page. These navigation devices often occupy a relatilrcly large amount of space on the incorporating mobile device. Because the navigation device is frequently used and often requires fine control, a lower end size limitation will nomnally be observed by device designers. To accommodate such larger, more conven: ent navigation devices on the housing of the mobile device, the amount of space thw; is available for the keys of the keyboard is correspondingly reduced if the keyboard ,md navigational device are proximately located to one another.
Another keyboard spacing problem is that of finger overlap and key differentiation when kcys are smaller than the user's finger and are spaced closely together -a situation that arises particularly if a full keyboard (as opposed to a reduced-format keyboard) arrangement is implemented. Furthermore, as handheld wireless communication devi-:es become used more and more frequently by a given user, and as they become smaller, comfort within the user's hand becomes a bigger concezn. The present disclosure provides solutions to these concerns.
Examplaty methods and atxangements conducted and configured according to the advantageous solutions presented herein are depicted in the accompanying drawings wherein:
FIG. I illustrate.s a handheld communication device configured according to the present teachings cradled in the palm of a user's hand;
FIG_ 2 is a block diagranz representing a wireless handheld communication devi;.e interacting in a communication network;
FIG. 3 a illustrates an examplary QWERTY keyboard layout;
FIG. 3b illustrates an examplary QWERTZ keyboard layout;
FIG. 3c illustrates an examplary AZERTY keyboard layout;
FIG. 3d illustrates an examplary Dvorak keyboard layout;
FIELD
This disclosure, in a broad sense, is directed toward handheld electronic devices;
and more specifically to handheld communication devices that have wireless communieation capabilities and the networks within which the wireless communics.tion devices operate. The present disclosuse fvrther relates to the ergonomics of such devices, including features which enhance a user's ability to tactilely differentiate among various keys on the device and which make such devices more comfortable in the user's palm and which facilitate thunib-manipulatiora of an included navigation too] on the device.
BACKGROUND
With the proliferation of wizeless communication systems, compatible handheld cotnmunication devices are becoming more prevalent, as well as advanced.
Wherea:s in the past such handheld communication devices were typically limited to either vuic:e transmission (cell phones) or text transmission (pagers and PDAs), today's consumer ollon demands a multifunctional device capable of performing both types of transmissions, including even sending and receiving e-mail. Furthermore, these higher-performaice devices can also be capable of sending and receiving other types of data including that which allows the viewing and use of Internet websites. These higrier level ftinctionaliiies necessarily require greater user interaction with the devices through included user interfaces (UIs) which may have originally been designed to accommodate making Fnd receiving telephane calls and sending messages over a related Short Messaging Service (SMS). As might be expected, suppliers of such mobile communication devices and -he related service providers are anxious to meet these customer requirements, but i:he demands of these more advanced functionalities have in many circumstances rendered ihe traditional user interfaces unsatisfactory, a situation that has caused designers to have to improve the Uls through which users input information and control these sophisticated operations.
Keyboards are used on many handheld devices, including telephones and mobile communication devices. The size of keyboards has been reduced over the years, as newer, smaller devices h,ave become popular. Cell phones, for example, are now sized to fit in one's pocket or the palm of the hand. As the size of the devices has decreased, the more important it has become to utilize the entire keyboard surface as efficiently as possible.
Many keyboards on mobile devices have an input device for navigation thrcugh the graphical user interface. These interfaces include such devices as trackballs and rotating wheels which can be used to effect movement of a cursor or pointer, or to scroll up, down and about a displayed page. These navigation devices often occupy a relatilrcly large amount of space on the incorporating mobile device. Because the navigation device is frequently used and often requires fine control, a lower end size limitation will nomnally be observed by device designers. To accommodate such larger, more conven: ent navigation devices on the housing of the mobile device, the amount of space thw; is available for the keys of the keyboard is correspondingly reduced if the keyboard ,md navigational device are proximately located to one another.
Another keyboard spacing problem is that of finger overlap and key differentiation when kcys are smaller than the user's finger and are spaced closely together -a situation that arises particularly if a full keyboard (as opposed to a reduced-format keyboard) arrangement is implemented. Furthermore, as handheld wireless communication devi-:es become used more and more frequently by a given user, and as they become smaller, comfort within the user's hand becomes a bigger concezn. The present disclosure provides solutions to these concerns.
Examplaty methods and atxangements conducted and configured according to the advantageous solutions presented herein are depicted in the accompanying drawings wherein:
FIG. I illustrate.s a handheld communication device configured according to the present teachings cradled in the palm of a user's hand;
FIG_ 2 is a block diagranz representing a wireless handheld communication devi;.e interacting in a communication network;
FIG. 3 a illustrates an examplary QWERTY keyboard layout;
FIG. 3b illustrates an examplary QWERTZ keyboard layout;
FIG. 3c illustrates an examplary AZERTY keyboard layout;
FIG. 3d illustrates an examplary Dvorak keyboard layout;
FIG. 4 illustrates a QWBRTY keyboard layout paired with a tra.ditional ten-key keyboard;
FIG. 5 illustrates ten digits comprising the numerals 0-9 arranged in a traditio:zaI, ITU Standard E.161 numeric telephone keypad layout, including the * and # keys flanking the 0 key;
FIG. 6 illustrates a traditional or standard phone key arrangement or layout accotding to the IT[! Standard E. 161 including both numerals amid letters;
FIG. 7 is an exploded perspective view of an exarnplary wireless handheld electronic device, incorporating a trackball assernbly as the auxiliary user input;
FIG. Sa is a plan view of the handheld communication device illustrated in FIC, 1 illustrating dimensional aspects of the body of the device;
F1GS 8b, 8c, and 8d fcuther illustrate the handheld comsnunication device of FIGS.
1 and Sa being carried and/or manipulated with a single hand of a user of the device;
FIG. 9 illustrates on a larger scale the keyboard (keyfield and navigation row) employed in the handheld communication device illustrated in FIGS. 1 and 8;
FIG. 10 is a perspective view of the keyboard illustrated in FIG. 9;
FIG. l 1 is an end-on view of the keyboard illustrated in FIGS. 9 and 10;
FIG. 12 illustrates key "target areas" and areas of finger overlap associated with the corner keys and above-adjacent keys on the keyboard of FIGS. 9-11;
FIG. 13 is a perspective view of the navigation row illustrated in FIG. 9;
FIG. 14 is a seation view of the navigation row illustrated in FIG. 13; and FIGS. 15a-15e illustrate a user using the navigation row illustrated in FIGS.
13 and 14, DETAILED XfASCRIPTION
An examplary handheld electronic device 300 is shown in FIG. 1, and the device:'s cooperation in a wireless network 319 is exemplified in the block diagram of FIG. 2.
These figures are exaniplary only, and those persons skilled in the art will appreciate t;ie additional elements and modifications necessary to make the device 300 work in particular network environments.
As shown in the block diagram of FIG, 2, the device 300 includes a microprocessor 338 that controls the operation of the device 300. A
communication subsystem 311 performs all eommunication transmission and reception with the wireless network 319. The microprocessor 338 further connects with an auxiliary input/output (UO) subsystem 328, a serial port (preferably a Universal Serial Bus port) 330, a d:splay 322, a keyboard 332, a speaker 334, a microphone 336, random access memory (FAM) 326, and flash memory 324. Other communication subsystems 340 and other device subsystems 342 are generally indicated as being functionally connected with the microprocessor 338 as well. An example of a communication subsystem 340 is tha: of a shott range communication system such as BLUE'TOO'Z'H communication rnodule or a Wi-Fi communication module (a connmunication module in compliance with ; EEE
802.11b) and associated circuits and components. Additionally, the microprocessor 338 is abic to perform operating system fimctions and preferably enables execution of so8warc applications on the communication device 300_ The auxiliary 1/O subsystem 328 can take the form of a variety of difforent navigation tools (multi-directional or single-directional) such as a traekball navigation tool 325 as illustrated in the examplary embodiment shown in FIG. 9, or a thumbwho.-l, a navigation pad, a joystick, or the like. These navigation tools are preferably located or, the front surface of the device 300 but may be located on any exteiior surface of the device 300. Other auxiliary 7/O subsystems can include external display devices and externally connected keyboards (not shown). While the above examples have been provided in relation to the auxiliary 1/O subsystem 328, other subsystems capable of providing inpUt or receiving output from the handheld electronic device 300 are considered within the scope of this disclosure. Additionally, other keys may be placed along the side of the device 300 to fanction as escape keys, volwne control keys, scrolling keys, power switches, or iiser progranunable keys, and may likewise be programmed accordingly.
As may be appreciated from FIG. 1, the handixeld communication device 100 comprises a lighted display 322 located above a keyboard 332 constituting a user input and suitable for accor,xmodating textual input to the handheld communication device 3 30.
The front face of the device has a navigation row 70 and a key field 650 that incluties alphanutneric keys 630, alphabetic keys 632, numeric keys 42, and other fvnction keys as shown in FIG. 1. As shown, the device 300 is of unibody construction, also known aa a "candy-bar" design.
Keys, typically of a push-button or push-pad nature, perform we]l as data en~ry devices but present problems to the user when they must also be used to effect navigational control over a screen-cursor. In order to solve this problem the present handheld electronic device 300 preferably includes an auxiliary input that acts as a cursor navigational tool 327 and which is also exteriorly located upon the front face of the dev: ce 300. Its front face location is particularly advantageous because it makes the tool easily tltuxnb-actuable like the keys of the keyboard. A particularly usable embodiment provices the navigational tool 327 in tho form of a trackbal1321 which is easily utilized to instruct two-dimensional screen cursor movement in substantially any direction, as well as act as an actuator when the trackball 321 is depressed like a button. The placement of the navigation tool 327 is preferably above the keyboard 332 and below the display screen 322; here, it avoids interference during keyboarding and does not block the user's view of the display screen 322 during use. (See FIG. 1).
As illustrated in FIGS. I and 7-15e, the present disclosure is directed to a handheld wireless communication device 300 configured to send and receive text messages. T ae device includes a hand cradleable body configured to be held in one hand by an operator of the device during text entry. A display 322 is included that is located on a front faze 370 of the body and upon which information is displayed to the operator during text entry.
A key field 650 is also located on the front face 370 of the elongate body and comprises a plurality of keys including a plurality of alphanumeric keys, symbol keys, and function keys. A navigation row 70 including menu keys 652 and a navigation tool 327 is aL;o located on the front face 370 of the body. The alphanumeric input keys comprise a plurality of alphabetic and/or numeric keys 632 baving letters and/or numbers associatt-,d therewith. The order of the lettcrs of the alphabetic keys 632 on the presently disclosed device can be described as being of a traditional, but non-ITU Standard E.161 layout.
This terminology has been utilized to clearly delineate the fact that such a telephone keypad as depicted in FIG. 6 is not suitable for use in the presently disclosed device 30).
Moreover, persons skilled in these arts who design devices 300 of the nature definExl herein would not look to devices that include an TTU Standard E,161 alphabetic telephone keypad configuration because of the substantial deficiencies that exist where text inpit beyond short messaging services (SMS) is required, such as for emailing.
The handheld wireless comrnunication device 300 is also configured to send arnd receive voice eommunications such as mobile telephone calls. To facilitate telephor.e calls, two call keys 605, 609 ("outer keys") are provided in the upper, navigation row 70 (so-called because it includes the navig$tion tool assembly 327) at the outer ends of tte navigation row 70. One of the two call keys is a call initiation key 605, and the other is a call termination key 609. The navigation row 70 also includes another pair of keys ("flanking keys") that are located immediately adjacent to the navigation tool 327, with one flanking key on either side of the navigation tool 327. It is noted that the outer keys are referred to as such not because they are necessarily the outennost keys in i:he navigation row - there may be additional keys located even further outwardly of the outer keys if desired - but rather because they are located outwardly with respect to the flanking keys. The flanking keys rnay, for instance, constitute the menu keys 652, which include a menu call-up key 606 and an escape or back key 608. The menu call-up key 606 is used to bring up a menu on the display screen 322 and the escape key 608 is used to return to the previous screen or previous menu selection. The functions of the call keys and the rnenu keys may, of course, be provided by buttons that are located elsewhere on the device, with different functions assigned to the outer keys and the flanking keys.
Furthennore, the device is equipped with components to enable operation of various programs, as shown in FIG. 2. In an examplary embodiment, the flash memory 324 is enabled to provide a storage location for the operating system 408, device programs 358, and data. The operating system 408 is generally configured to manage other application programs 358 that are also stored in memory 324 and executable on f-ic processor 338. The operating system 408 honors requests for serviees made by application programs 358 through predefined application program 358 interfaces. More specifically, the operating system 408 typically determines the order in which multiple applieations 358 are executed on the processor 338 and the execution time allotted fDr each application 358, manages the sharing of memory 324 among multiple applications 358, handles input and output to and fxoxn other device subsystems 342, and so on. [n addition, users can typically interact directly with the operating system 408 through a user interface usually including the keyboard 332 and display screen 322_ While in..m examplary embodiment the operating system 408 is stored in flash memory 324, ttte operating system 408 in other embodiments is stored in read-only memory (ROM) or similar storage element (not shown). As those skilled in the art will appreciate, the operating system 408, device application 358 or parts thereof may be loaded in or other volatile memory.
In one examplary embodiment, the flash memory 324 contains prograrrxs/applications 358 for execution on the device 300 including an address book 352, a personal information manager (PIM) 354, and the device state 350.
Furthermon}, programs 358 and other infonnation 356 including data can be segregated upon storage in the flash memory 324 of the device 300.
Wlaen the device 300 is enabled for two-way communication wathin the wir,less communication network 319, it can send and receive signals from a mobile communication service. Examples of communiea.tion systems enabled for two-way communication include, but arc not limited to, the General Packet Radio Service (GPRS) network, the Universal Mobile Telecommunica.tion Service (UTMS) network, the Enhanced Data for Global Evolution (EDGE) network, and the Code Division Multiple Access (CDMA) network and those networks, generally described as packet-switclied, narrowband, data-only technologies which are mainly used for short burst wireless data transfer. For the systems listed above, the communication device 300 must be properly enabled to transnnit and receive signals from the communication network 319.
Qher systems may not require sach identifying information. GPRS, UMTS, and EDGE
require the use of a Subscriber Identity Module (SIM) in order to allow communication with the communication network 319. Likewise, most CDMA systems require the use of a Removable Identity Module (RUIM) in order to communicate witli the CDMA
network.
The RUIM and SIM card can be used in multiple different communication devices 300.
The communication device 300 may be able to operate some features withoui a SILV1/RU'IM card, but it will not be able to communicate with the network 319.
A
SIM/RUIM interface 344 located within the device 300 allows for removal or insertion of a SYM/RUIIVI card (not shown). The SIM/RUIM card features m,emory and holds key configurations 351, and other information 353 such as identification and subscriber related inforrnation- With a properly enabled communication device 300, two-way communication between the communication device 300 and communication network is possible.
If the communication device 300 is enabled as described above or the comtxiunication network 319 does not require such enablement, the two-way communication enabled device 300 is able to both transmit and receive information from the communication network 319. The transfer of communication can be from the devi.,c 300 or to the device 300. In order to cornmunicate with the communication network 319, the device 300 in the presently described examplary embodiment is equipped with tin integral or internal antenna 318 for transmitting signals to the communication n,etwork 319. Likewise the cotnruunication device 300 in the presently described examplary embodiment is equipped with another antenna 316 for receiving commtmication from the communication network 319. These antennae (316, 318) in another exampl.ary embodiment are combined into a single antenna (not shown). As one skilled in the art would appreciate, the antenna or antennae (316, 318) in another embodxmeni are externally mounted on the device 300.
VfJhen equipped for two-way communicat,ion, the communication device 300 featurgs a communication subsystem 311. As is well known in the art, this communication subsystem 311 is modified so that it can support the operational zteeds of the device 300. The subsystem 311 includes a transmitter 314 and receiver 312 incluiing the associated antcnna or antennae (316, 318) as described above, local oscillators (L,Os) 313, and a proceseing module 320 which in the presently described exarnplary embodiment is a digital signal processor (DSP) 320.
It is contemplated that communication by the device 300 with the wireless network 319 can be any type of communication that both the wireless network 319 and device 300 are enabled to transmit, reaeive and process. In general, these can be classified as voice and data. Voice communication is communication in which signals for audible sounds are transmitted by the device 300 through the comznunication network 319. Data is all other types of communication that the device 300 is capable of performing within the constra.nts of the wireless network 319.
hxample device applications that can depend on such data include email, cantacts and calendars. For each such application synchronization with home-based versions on the applications can be critical for either or both of their long term and short term util:.ty.
As an example, emails are often time sensitive, so substantially real time synchronizat.on is highly desirable. Contacts, on the other hand, can be usually updated less frequently without inconvenience. Therefore, the utility of the device 300 is significantly enhancted (if not enabled) when connectable within a communication system, and particularly w1"en connectable on a wireless basis in a network 319 in which voice, text messaging, and other data transfer are accomumodated.
Integration of the trackball assembly into handheld device 300 can be seen in the exploded view of FIG. 7 showing some of the typical components found in the assemtly of the handheld electronic device 300. The construction of the device benefits frcm various manufacturing simplifications. The internal components are predominantly constructed on a single PC$ (printed circuit board, not illustrated)_ The keyboard 332 c.in be constructed from a single piece of material, and in some embodiments is made from plastic. 'lfie keyboard 332 sits over dome switches (not shown) located on the PCB in one embodiment. While in the presently described examplary embodiment one switcl;
is provided for every key on the kayboard 332, in other embodiments more than one switch or less than one switch per key are provided. The keyboard light guide or chassis (lot shown) holds the keyboard 332 and trackball navigation tool 325 in place above the PCB.
A front housing cover I 1 is tnounted over tlte keyboard 332 and light guide.
The front housing cover 11 also provides an attachment point for the lens 13. The lens 13 coveis :he display, which is typically mounted on the PCB, to prevent damage to the display screm.
When assembled, the front housing cover 11 and the PCB are fixedly attached to eE.eh other and the display is positioned between the PCB and the front housing cover 11.
The trackball navigation tool 325 can be frictionally engaged with the frcint housing cover 11, and in one examplary embodiment the trackball navigation tool 325 is removable when the device is assembled. This allows for replacement of the trackball navigation tool 325 if/when it becomes damaged or the user desires replacernent wit1- a different type of trackball navigation tool 325. In the exampiary embodiment of FIG. 7, the navigation tool 328 is a bal1321 based device. Other multidirectional navigation tools 327 such as joysticks, four-way cursors, or touch pads are also considered to be within t:ie scope of this disclosure. The removal of the traclcball navigation tool 325 is enabl,:d through the use of an outer removable ring 23, the outer edge of which defines f-ia periphery of the navigation tool assembly 328. The ring 23 ensures that the navigation too1328 is properly held in place against the light guide.
A serial port (preferably a Universal Serial Bus port) 330 and an earphone jack 40 are fixedly attached to the PCB and further held in place by left side element 16. Buttons 30-32 may be attached to switches (not shown) which are connected to the PCB
12.
Final assembly involves placing a bottom piece 18 in contact with front housing cover 11 and back support frame 19. Furthermore, the assembly interconnects right side element 15 and left side element 16 with the front housing cover 11, bottom piece 18, back support frame 19, PCB, and lens 13. These side elements 15, 16 provide additional protection and strength to the support structure of the device 300. In the presently described examplary embodiment, backplate 14 is removably attached to the back support frame 19.
As intimated hereinabove, one of the more important aspects of the handl- eld electronic device 300 to which this disclosure is directed is its size. While some users will grasp the device 300 in both hands, it is intended that a predominance of users will cradle the device 300 in one hand in such a inanner that input and control over the device 300,;an be effmted using the thumb of the same hand in which the device 300 is held.
However, it is appreciated that additional control can be effected by using both hands. As a handheld device 300 that is easy to grasp and desirably pocketable, the size of the device 300 must be kept commensurately small. Of the device's dimensions, limiting its width is important for the purpose of assuring cradleability in a user's hand. Moreover, it is preferred that =he width of the device 300 be maintained at less than eight centimeters (approximately th-ee inches). Keeping the device 300 within these dimensional limits provides a hand cradleable unit that users prefer for its usability and portability.
Limitations with resp.-,ct to the height (length) of the device 300 are less stringent when considering harid-cradleability. Therefote, in order to gain greater size, the device 300 can be advantageously elongated so that its height is greater than its width, but still remains easily supported and operated in one b,and.
A potential drawback is presented by the small size of the device 300 in that there is Iimit.ed exterior surface area for the incausion of user input and device output features.
This is especially true for the "prime reaI estate" on the front face 370 of the davice 30, wbere it is most advantageous to include a display screen 322 that outputs information to the eiser. The display screen 322 is preferably located above a keyboard 332 that is utilized for data entry into the device 300 by the user. If the screen 322 is provided belcw the keyboard 332, a problem occurs in that viewing the screen 322* is inh,ibited when the user is inputting data using the keyboard 332. Therefore it is preferred that the dispLiy screen 322 be above the input area, thereby solving the problem by assuring that the hands and fingers do not block the view of the screen 322 during data entry periods.
To facilitate textual data entry into the device 300, an alphabetic keyboard 332 is provided. In the examplary illustrated embodiment, a full alphabetic keyboard 332 is utilized in which there is one key per letter (with some of the letter keys aiso having numbers, symbols, or functions associated with them). In this regard, the associated letters can be advantageously organized in QWERTY, QWERTZ, AZERTY, or Dvorak layouts, among others, thereby capitalizing on certain users' familiarity with these various lettcr orders_ In order to stay within the bounds of the limited front surface area, however, each of the keys must be commensurately small when, for example, twenty-six keys must be provided in the instance of the English language.
As shown in FIG. 1, the handheld electronic device 300 is cradleable in the palm of a user's hand. The handheld device 300 is provided with a keyboard 332 to enter text data and place telephone calls and a display screen 322 for communicating information to ihe user. A connect/scnd key 605 is preferably provided to aid in the placement of a phcne call. Additionally, a disconnect/end key 609 is provided. The send key 605 and end key 609 preferably are arranged in the navigation row 70 including the navigation tool 3f!7.
Additionally, the navigation row 70 preferably has a menu call-up key 606 and a back key or escape key 608.
The keyboard 332 includes a plurality of keys that can be of a physical nature suah as actuable buttons, or they can be of a software nature, typically constituted by virtual represmtations of physical keys on a display screen 322 (referred to herein as "virtLal keys"). It is also contemplated that the user input can be provided as a combination of tic two types of keys. Each key of the plurality of keys has at least one actuable action whi"h can be the input of a character, a command or a function. In this context, "ctaaraeters" are contemplated to exemplarily include alphabetic letters, language symbols, numbe,s, punctuation, insignias, icons, pictures, and even a blank space. Input commands and functions can include such things as delete, backspace, moving a cursor up, down, left or right, initiating an arithmetic function or command, initiating a command or function specific to an application program or feature in use, initiating a command or funetion progranzmed by the user and other such commands and functions that are well known to those persons skilled in the art. Specific keys or other types of input devices can be used to navigate through the various applications and features therevf. Further, depending on the application 358 or feature in use, specific keys can be enabled or disabled.
In the case of physical keys, all or a portion of the plurality of keys have one or more indicia representing character(s), command(s), and/or functions(s) displayed at their top surface and/or on the surface of the area adjacent the respective key. In the instance where the indicia of a key's function is provided adjacent the key, the indicia can be printed on the device cover beside the key, or in the instance of keys located adjacent the display screen 322. Additionally, current indicia for the key may be temporarily shown nearby the key on the screen 322.
In the case of virtual keys, the indicia for the respective keys are shown :)n the display screen 322, which in one embodiment is enabled by touching the display 3creen 322, for example, with a stylus to generate the character or activate the indicated command or function. Some examples of display screens 322 capable of detecting a touch include resistive, capacitive, projected capacitive, infrared and stuface acoustic wave (SAW) touchscreens.
Physical and virtual keys can be combined in many different ways as appreciated by those skilled in the azt. In one embodiment, physical and rrirtual keys are combined such that the plurality of enabled keys for a particular application or feature of the handheld electronic device 300 is shown on the display screen 322 in the same configuration as the physical keys. Using this configuration, the user can select the appropriate physical key corresponding to what is shown on the display screen 322. :'hus, the desired character, command or function is obtained by depressing the physical key corresponding to the character, command or function displayed at a corresponding position on the display screen 322, rather than touching the display screen 322.
The various characters, commands, and functions associated with keyboard typing in general are traditionally arranged using various conventions. The most comnno:-1 of these in the United States, for instanee, is the QWERTY keyboard layout.
Others inc:ude the QWERTZ, AZERTY, and Dvorak keyboard configurations. The QWERTY keyboard layout is the standard English-language alphabetic key arrangement 44a shown in FIG. 3a.
The QWERTZ keyboard layout is normally used in German-speaking regions; this alphabetic key arrangement 44b is shown in FIG. 3b. The AZERTY keyboard layout 44c is normally used in French-speaking regions and is shown in FIG. 3c. The Dvcrak keyboard layout was designed to allow typists to type faster, this alphabetic icey atrangement 44d is shown in FIG. 3d. In other examplary embodiznents, keyboards having multi-Ianguage key arrangements can be implemented.
Alphabetic key arrangements are often presented along with numerie key arrangements. Typically, the numbers 1-9 and 0 are positioned in the row above -:he alphabetic keys 44a-d, as shown in FIG. 3a-d Alternatively, the numbers share keys with the alphabetic characters, such as the top row of the QWERTY keyboard. Yet another examplary numeric key arrangement is shown in FIG. 4, where a"ten-key style nume"ic keypad 46 is provided on a separate set of keys that is spaced from the alphabetic/numeric key arrangement 44. Still further, ten-key numeric arrangements may be common with or shared with a subset of the alphabetic keys, as best shown in FIGS. 9 and 10.
The ten-key styled numeric keypad 46 includes the numbers "7", "8", "9" arranged in a top row, "4", "5", "6" arranged in a second row, "1", "2", "3" arranged in a third row, and "0" in a bottom row. Further, a numeric phone key arrangement 42 is exemplarily illustrated in FIG.5.
As shown in FIG. 5, the numeric phone key arrangement 42 may also utilize a surface treatment on the surface of the center "5" key. This surface treatment is configured such that the top surface of the key is distinctive from the surface of other keys.
Preferably the surface treatment is in the form of a raised bump or recessed dimple 43.
Alternatively, raised bumps may be positioned on the housing around the "5"
key and do not necessarily have to be positioned directly on the key.
It is desirable for handheld devices 300 to include a combined text-entry keybo-crd and a telephony keyboard_ Examples of such handheld devices 300 in.clude mobile stations, ceJlular telephones, wirelcss personal digital assistants (PDAs), two-way pagi:ag devices, and others. Various keyboards are used with such devices and can be termed a full keyboard, a reduced-fvnmat keyboard, or phone key pad. In embodiments of a handheld device 300 having a full keyboard, the alphabetic characters are singly associated with the plurality of physical keys. Thus, in an English-langnage keyboard af this configuration, there are at least 26 keys in the plurality, with one letter per alphabctic key.
FIGS. 5 and 6 both feature numeric keys arranged according to the TTU Standa-d E. 161 #'orm. In addition, FIG. 6 also in.corporates alphabetic characters according to the ITU Standard E. 161 layout as well.
Reference is now made to FIGS. 8-12, which disclose an examplary embodiment having a$ill alphabetic keyboard arrangement. In particular, as shown in FIGS.
8-12), only one letter of the alphabet is associated with any given alphabetic key within the ker,s of the keyfield. This is in contrast to reduced-format arrangements, in which multip:e letteira of the alphabet may be associated with at least some of the alphabetic keys of a keyboard. Additionally, as alluded to above and shown in the referenced figu.res, some of the alphabetic keys also have numbers, symbols, or functions associated with them. In the specifically illustrated embodiment, the alphabetic keys (including those also having numbers, symbols, or functions associated with thezn) are arranged in a QWERTY
arrangement, although any of the other full-keyboard atrangements (QWBRTZ, AZERTY, or Dvorak) may also be implemented within the scope of this disclosure.
To emulate as much as possible a full-sized keyboard as used, for example, with a personal computer, the alphabetic keys in the keyfield 650 are arranged in rows 72, 74, and 76. Furthermore, as is customary with such full-sized keyboards, the space key 80 is located in the center of the lowermost row 80 of the keyfield 650, below the letter (and to a certain extent number) rows 72, 74, and 76. To help make the hand-cradleable dimensions of the device poss;L;v, i;iG Shift keys ui are located at each of the outemost ends of the lowermost row 80. This is in contrast to a typical full-size keyboard, in which the shift keys are at the ends of the lowermost row of alphabetic keys.
Because they are the endmost keys of the lowermost row, the shift keys 82 are referred to as "corner k.-ys."
It is xtoted that in other arrangements that are deemed to be within the scope of this disclosure, the comer keys may have other functions besides or in addition to the shift function. AdditionaIly, even though the illustrated keyfield 650 is fairly rectangular since all four rows of keys 72, 74, 76, and 78 have the same physical length, the term "cerner keys" may also be used to describe the outermost keys in the Iowermost row of keys in arrangements where the lowermost row of keys is shozter than those above it.
In addition to the space key 80 and the shift (oorner) keys 82, the presently described embodixnent also includes an additional key on either side of the space key, between the space key and the eomcr keys, in the lowerRnost row of keys. For example, the presently described embodiment includes the "0" key 84 to the left of the space key 80 (part of the numeric keyfield superimposed or overlaid over certain keys of the alphabetic keyfield) and the "symbol" key 86 ("sym," used to indicate that a symbol instead of a letter is desired when pressing a given kcy) to the right of the space key 80.
As noted, the lowermost row of keys 78 is the same physical length as the other three rows of keys 72, 74, arxd 76 even though in the illustrated embodiment there are fewer keys in the lowermost row than there are in the rows above it.
"Iherefore, in addition to the space key 80 (which is conventionally several times longer than the rest of the keys in the ke}field on a full-size keyboard), the shift (corner) keys 82 are also longer than the keys in the rows above the lowerrnost row 78 in order to "fill out"
the lowermost row 78_ For example, as shown in the illustrated embodiment, the shift keys 82 are twi-;e as long as the keys in the rows above the lowermost row, and there are two keys (identifaed in more detail below) located above each shift key 82.
Alternatively, :n embodiments in wbich the only keys in the lowemlost row are the space key and the shift keys, the shift keys could be even longer than twice the width of the keys above them, amd there could, accordingly, be more than two keys above each of the shift keys.
k'urthermore, in accordance with emulating a full-size keyboard as much as possible, the right endmost key 88 in the row 76 above the lowermost row 78 (i e., immediately above the right-hand shift key 82) is the "enter" key. In some embodiments, the key immediately to the left of the "enter" key may be a funetion and/or a symbol ktiy, e.g., the speaker/"$" key as shown in the illustrated ernbodirnent.
On the other side of the keyf eld shown as being mirror-symmetric about a vertically oriented axis of symmetry, the left endmost key 90 in the row 76 above the lowermost row 78 (i.e., immediately above the left-hand shift key 82) is the "alt" key. In some embodiments, the key immediately to the right of the "alt" key will likely be an alphabetic key and may also constitute a numeric key, e.g., the "Z"/"7" key as shown in the illustrated embodinnent. The "enter" and "alt" keys (particularly the "cnter" key) are frequently used keys, particu.lar in the context of handheld wireless communication devices of the sort to which the present disclosure pertains. 'I'herefore, according to one teaching of this disclosure, certain features are incorporated into the corner keys 82 to facilitate easier access to the "enter" and "alt" keys immediately adjacent to said eoarner keys 82.
First, as illustrated in FIGS. 8-12 (FIG. l I in particular), the height of the corner keys with respoct to the face of the device body decreases toward their laterally outgr edges. As a result, (at Ieast portions of) the bottom edges of the keys immediately above the comer keys (i.e., "above-adjacent" keys) are higher than the laterally outer edges of the eomer keys. Depending on the relative sizes of the keys, this relationship may, but need not necessarily, extend laterally inwardly to more than just the outermost keys in the ro-v above the cozner keys. This relationship makes it easier to identify correctly, by feel, the keys above the comer keys. This is particularly advantageous in a device having a full keyboard arrangement where keys are typically smaller than in a reduced-format keyboard arrangement. For exarnple, as illustrated in FIG. 12, the corner key "target areas" 92 are located on the upper surfaces of the corner keys 82, but the regions of finger overlap 94 extend very close to the lower edges - and in some cases may actually overlap the Iowc:r edges - of the keys immediately above the comer keys 82.
1~
It should be appreciated that this relative height relationship is most advantagmus along the top edges of the corner keys and the bottom edges of the above-adjacent keys to the corner keys. Additionally, this decreasing relative height relatioaaship is most advantageous at the laterally outermost portions of the corner keys, although it preferably extends across the entire lateral width of the corner keys. Accordingly, it is sufficient for purposes of this disclosure for the corner keys to decrease in height from a laterally inner position (in contrast to an innerrnost edge) toward the laterally outermost edge.
Second, in addition to having the relative height relationship described immediately above, the corner keys are slightly truneated at their lowernaost, laterfdly outermost portions (bottom outboard corners) 96. In particular, this portion 96 of eac} of the corner keys 82 has a radius of convex curvature that is significantly larger than the radius of curvature of the other corner portions 98 of the corner keys. As a result, the lower edges of the corner keys transition smootltly and continuously into the laterally outcr edges of the ccirner keys without forming distinct corners at the lowermost, laterally outermost portions 96. This feature makes it easier to "reach over" the shift keys (corser keys 82) at the outer edges of the key field 650 to press the "enter" or "alt"
keys while closely approximating an overall generally rectangular arrangement of the key field 650, which enhances aesthetics.
In addition to this relative configuration of the corner keys 82 and the abovo-adjacent keys, the configuration of keys in the navigation row 70 - both with respect to the trackball navigation tool 325 and with respect to other keys in the navigation row 70 - is airanged such that it is easier to tactilely differentiate among the several "user inputs"
(e.g., the keys and the trackball navigation tool 325) in the navigation row 70 and to slidingly traverse the inputs, as well, Referring once again to the drawings, as best illustrated in FIGS. 13 and 14, the height of the menu keys 652 (namely the flankio;g menu call-up key 606 and the escape or back key 608) with respect to the face 370 of the device body decreases from the laterally outer edges of the flanking keys 652 toward their laterally inner edges. This deereasin g-height profile advantageously extends laterally across the entire width of the flanking ke_+s 652, although it suffices for purposes of this disclosure that it extends just from micl-portions of the flanking keys 652 toward their laterally inner edges. At their laterally inner edges, the flanking keys 652 are essentially the same height with respect to the face 370 of the device body as the peripheral portions 100 of the trackball navigation tool 325 (e.g., l6 the periphery' of the outer ring 23) at which the flanking keys 652 are adjacent to the trackball navigation tool 325. As a result of this configuration, the upper surfaces oi' the flanking keys 652 are generally tactilely continuous with the periphexal portions of the trackball navigation tool 325. The "valley" configuration of the flanking keys 652 ivith the trackball navigation tool 325 in the center "trougb" of the valley makes it very easy and comfortable for a user to navigate with the navigation row 70, "rocking"
back and forth between menus using the menu keys 652 to do so while navigating with the trackball navigation tool 325 as illustrated in FIGS. 15a, 15b, and 15c.
Additionally, at their laterally outer edges, the height of the flanking keys (with respect to the face of the device body) is greater than the height (with respect to the fact~ of the device body) of the laterally inner edges of the outer keys (e,g., the call initiate and call end buttons 605, 609). Furthermore, the laterally inner edges of the outer keys may be chamfered, as at 102, to increase the amount of height differential between the flanking keys 652 and the outer keys at the junction between them. Still fu.rther, in addition to sloping upwardly from their laterally inner edges toward their laterally outer edges, 'he flanking keys preferably have laterally outer edges that are hump-shaped or crowned, as best shown at 104 in FIG. 13. This combination of features makes it particularly easy to differentiate between the flanking keys 652 and the outer keys when selecting between them, as illustrated in FIGS. 15d and 15e. In particular, although the "target areas" 106 of the flanking keys 652 are generally centered on the upper surfaces of those keys, the regions 108 of finger overlap may extend beyond the outer edges of those keys and encroach on the outer keys, as illustrated in thosc two figures.
To fiuther enhance user comfort, the body of the device 300 may be referred to as a waisted, eenter-tapered, or necked-down configuration. La this regard, this disclosLre features a handheld wireless communication device 300 configured to send and receive text messages. The handheld device 300 includes a hand cradleable body configured to be held in a text entry orientation in one hand of an operator during text entry, as illustrated in FIGS, 1, Sb, Sc, and 8d. The body has a front face 370, a vertical cent.erline, and top and bottom portions 110, 112 relative to the text entry orientation. A display screen 322 is located on the front face of the body, and a microprocessor 338 is also provided to recei-e and prooess operator cornmands from user inputs located on the handheld device 300. A
key field 650 is also located on the front face of the body and includes a plurality of keys, of which plurality a portion are alphanumeric input keys. The alphanumeric input ke~%
include a plurality of alph,abetic keys having letters associated therewith that are azranged in a QWERTY, a QWERTZ, an AZERTY, or a Dvorak arrangernent, which facilitates text entry. The top and bottom portions of the body 110, 112 are wider than a mid-portion of said body 114, and right and left sides of said body 15, 16 are each concave.
Various specific arrangements of the handheld device 300 are possible with this configuration. For example, each of the right and left sides of the body may be substantially circularly arc shaped along at least two-thirds of a length of the bod.1 as measured along the longitudinal axis, with radius of curvature R as illustrated in FIG. 8a.
This renders the sides of the body of the handheld device 300 concave. The corners of the handheld device 300, on the other hand, are convex, and the handheld device 300 is confxgured such that the right and left sides of the body transition smoothly into reverse arc shapes (e_g., convex) proximate the corners of the body.
Suitably, the handheld device 300 includes a trackball navigation tool 325 that is located between the display screen 322 and the key field 650, with the trackball navigation tool 325 being located at a distance DI, D2, D3, and D4, respectively, from each of four eorners 116 of the body of the handhold device 300. Preferably, each of those four distances is less than one-tenth of the radius of curvature R of the right and left concz.ve sides of the body, which facilitates operator thumb control of the trackball navigation tool 325 and palm-eradling of the handheld device 300 (see FIG. 8d). Still further, the right and left sides of the body may each taper iato the top and bottom ends of said body, e.g., by means of chamfering at the corners.
To farther enhance user comfort, at least a portion of each of the right and left side surfaces of the body includes soft-touch material -'for exampl.e, material having a hardness less than 100 durometer. Suitably, the soft-touch material extends from the si.je surfaces of the body onto adjacent portions of a rear surface of said body.
The soft-touoh material may extend up a lower portion of the side surfaces approximately two-thirds of' a depth of the body (with the upper portions of the side surfaces being composed of material having a hardness greater than 100 durometer). In addition to extending toward the bac:k of the handheld device 300, the so$-touch material may also extend from the side surfaces of the body onto adjacent portions of a bottom end surface of the body. (Soft-touch material nnay be employed on devices that have other geometries than those described here,) Referring once again to the figures, the upper and lower ends 110, 112 of the device 300 (FIGS. 1, 8a) are slightly wider than the mid-portion 114 of the device 300, with the sides 15 and 16 being slightly concave. For example, in an examplIary embodiment, the ends 110, 112 of the device may be of the order of 62 millimetem in width, whereas the mid-portion 114 may be 60 millimeters in width. Such a flared top und bottom configuration fits more comfortably against the palm of the user's hand - in particular, against the fleshy part at the base of the thumb where the bottom flare is coneemed - and helps to prevent the device 300 from slipping out of the user's hand. The top-end side flare also provides a convenient and comfortable thumb rest (see FIG. 1) and facilitates uscr control over the device 300, particularly when the bottom flared portior, is firmly anchored in the user's palm as shown in FIGS. 1, 8b, 8c, and 8d.
Furthermore, the corners 116 of the device 300 are also configured to enhance user comfort. In particular, they are configured such that the left and right sides of the body transition smoothly into the upper and lower ends of the body. More particularly, the corners are ehamfered as shown in FIG. 1. This, too, enhances user comfort -particularly with respect to the lower corners - since the lower eorners in partictilar may be pressed firmly into the user's palm, especially during one-handed operation of the device 300.
Finally, with regard to user comfort features, the sides 15, 16 of the device 300 are preferably provided with (or even made entirely from) soft-touch material such as a rubberized coating, soft plastic, or the like. In this regard, the soft-touch material preferably covers the lower two-thirds of the sides 15, 16 of the device 300 (lower in tris context being taken firom the front of the device 300 toward the back of the device 30)) and covers the side wrap-around portions 15a, 16a of the body sides 15, 16 (see FIG. 7) .i*o as to extend at least partially onto the back surface of the device 300.
Additionally, the soft-touch material also preferably covers the bottom wrap-around portions ]
Sb, 16b of the body sides 15, 16 so as to extend at least partially onto the lowermost (i.e., the bottom end) surface of the device 300. In at least one embodiment, the soft-touch material also cwvc-..s the bottom portion of bottom piece 18. In combination with the concave eontoured sides 15, 16 and advantageously rounded corners thereof, the soft-touah matcrial renders the device 300 easier to grip and use. Conveniently, the soft-touch material provide.s improved comfort when holding the device 300.
As described above, the International Telecommunications Union ("ITU") ha.s established phone standards for the arrangement of alphanumeric keys. The standard phone numeric key arrangement shown in FIGS. 5 (no alphabetic letters) and 6(with alphabetic letters) corresponds to ITU Standard E_ 161, entitled "Arrangemen.t of Digits, Letters, and Symbols on Telephones and Other Devices That Can Be Used for Gaining Access to a Telephone Network." Tlis standard is also known as ANSI Tt.703-and ISO/IEC 9995-8:1994. As shown in FIG. 9, the numeric key arrangement can be overlaid on a QWERTY arrangement. The numeric arrangement as shown can be uptly described as a top-to-bottom ascending order tluee-by-three-over-zero pattern, While several keyboard layouts have been described above, the layouts can be described as having keys disposed on the keyboard in a QWERTY, reduced QWERTY, QWfiRTZ, Dvorak, or AZERTY key layout. These familiar keyboard layouts allow tisers to type more intuitively and quickly than, for example, on the standard alphabetic layout on a telephone pad. As mentioned above, the key anangements can be reduced compared to a standard layout thtough the use of more than one letter or character per key. By utilizing fewer keys, the keys can be made larger and therefore more convenient to the user.
Examplary embodiments have been described hereinabove regarding both handheld electronic devices 300, as well as the communication networks 319 within which they operate. Again, it should be appreciated that the focus of the present disclosurc: is enhanced usability of today's more sophisticated wireless handheld communication devices 300 taking into account the necessary busyness of the front face real estate of these more compact devices that incorporate additional user interfaces.
FIG. 5 illustrates ten digits comprising the numerals 0-9 arranged in a traditio:zaI, ITU Standard E.161 numeric telephone keypad layout, including the * and # keys flanking the 0 key;
FIG. 6 illustrates a traditional or standard phone key arrangement or layout accotding to the IT[! Standard E. 161 including both numerals amid letters;
FIG. 7 is an exploded perspective view of an exarnplary wireless handheld electronic device, incorporating a trackball assernbly as the auxiliary user input;
FIG. Sa is a plan view of the handheld communication device illustrated in FIC, 1 illustrating dimensional aspects of the body of the device;
F1GS 8b, 8c, and 8d fcuther illustrate the handheld comsnunication device of FIGS.
1 and Sa being carried and/or manipulated with a single hand of a user of the device;
FIG. 9 illustrates on a larger scale the keyboard (keyfield and navigation row) employed in the handheld communication device illustrated in FIGS. 1 and 8;
FIG. 10 is a perspective view of the keyboard illustrated in FIG. 9;
FIG. l 1 is an end-on view of the keyboard illustrated in FIGS. 9 and 10;
FIG. 12 illustrates key "target areas" and areas of finger overlap associated with the corner keys and above-adjacent keys on the keyboard of FIGS. 9-11;
FIG. 13 is a perspective view of the navigation row illustrated in FIG. 9;
FIG. 14 is a seation view of the navigation row illustrated in FIG. 13; and FIGS. 15a-15e illustrate a user using the navigation row illustrated in FIGS.
13 and 14, DETAILED XfASCRIPTION
An examplary handheld electronic device 300 is shown in FIG. 1, and the device:'s cooperation in a wireless network 319 is exemplified in the block diagram of FIG. 2.
These figures are exaniplary only, and those persons skilled in the art will appreciate t;ie additional elements and modifications necessary to make the device 300 work in particular network environments.
As shown in the block diagram of FIG, 2, the device 300 includes a microprocessor 338 that controls the operation of the device 300. A
communication subsystem 311 performs all eommunication transmission and reception with the wireless network 319. The microprocessor 338 further connects with an auxiliary input/output (UO) subsystem 328, a serial port (preferably a Universal Serial Bus port) 330, a d:splay 322, a keyboard 332, a speaker 334, a microphone 336, random access memory (FAM) 326, and flash memory 324. Other communication subsystems 340 and other device subsystems 342 are generally indicated as being functionally connected with the microprocessor 338 as well. An example of a communication subsystem 340 is tha: of a shott range communication system such as BLUE'TOO'Z'H communication rnodule or a Wi-Fi communication module (a connmunication module in compliance with ; EEE
802.11b) and associated circuits and components. Additionally, the microprocessor 338 is abic to perform operating system fimctions and preferably enables execution of so8warc applications on the communication device 300_ The auxiliary 1/O subsystem 328 can take the form of a variety of difforent navigation tools (multi-directional or single-directional) such as a traekball navigation tool 325 as illustrated in the examplary embodiment shown in FIG. 9, or a thumbwho.-l, a navigation pad, a joystick, or the like. These navigation tools are preferably located or, the front surface of the device 300 but may be located on any exteiior surface of the device 300. Other auxiliary 7/O subsystems can include external display devices and externally connected keyboards (not shown). While the above examples have been provided in relation to the auxiliary 1/O subsystem 328, other subsystems capable of providing inpUt or receiving output from the handheld electronic device 300 are considered within the scope of this disclosure. Additionally, other keys may be placed along the side of the device 300 to fanction as escape keys, volwne control keys, scrolling keys, power switches, or iiser progranunable keys, and may likewise be programmed accordingly.
As may be appreciated from FIG. 1, the handixeld communication device 100 comprises a lighted display 322 located above a keyboard 332 constituting a user input and suitable for accor,xmodating textual input to the handheld communication device 3 30.
The front face of the device has a navigation row 70 and a key field 650 that incluties alphanutneric keys 630, alphabetic keys 632, numeric keys 42, and other fvnction keys as shown in FIG. 1. As shown, the device 300 is of unibody construction, also known aa a "candy-bar" design.
Keys, typically of a push-button or push-pad nature, perform we]l as data en~ry devices but present problems to the user when they must also be used to effect navigational control over a screen-cursor. In order to solve this problem the present handheld electronic device 300 preferably includes an auxiliary input that acts as a cursor navigational tool 327 and which is also exteriorly located upon the front face of the dev: ce 300. Its front face location is particularly advantageous because it makes the tool easily tltuxnb-actuable like the keys of the keyboard. A particularly usable embodiment provices the navigational tool 327 in tho form of a trackbal1321 which is easily utilized to instruct two-dimensional screen cursor movement in substantially any direction, as well as act as an actuator when the trackball 321 is depressed like a button. The placement of the navigation tool 327 is preferably above the keyboard 332 and below the display screen 322; here, it avoids interference during keyboarding and does not block the user's view of the display screen 322 during use. (See FIG. 1).
As illustrated in FIGS. I and 7-15e, the present disclosure is directed to a handheld wireless communication device 300 configured to send and receive text messages. T ae device includes a hand cradleable body configured to be held in one hand by an operator of the device during text entry. A display 322 is included that is located on a front faze 370 of the body and upon which information is displayed to the operator during text entry.
A key field 650 is also located on the front face 370 of the elongate body and comprises a plurality of keys including a plurality of alphanumeric keys, symbol keys, and function keys. A navigation row 70 including menu keys 652 and a navigation tool 327 is aL;o located on the front face 370 of the body. The alphanumeric input keys comprise a plurality of alphabetic and/or numeric keys 632 baving letters and/or numbers associatt-,d therewith. The order of the lettcrs of the alphabetic keys 632 on the presently disclosed device can be described as being of a traditional, but non-ITU Standard E.161 layout.
This terminology has been utilized to clearly delineate the fact that such a telephone keypad as depicted in FIG. 6 is not suitable for use in the presently disclosed device 30).
Moreover, persons skilled in these arts who design devices 300 of the nature definExl herein would not look to devices that include an TTU Standard E,161 alphabetic telephone keypad configuration because of the substantial deficiencies that exist where text inpit beyond short messaging services (SMS) is required, such as for emailing.
The handheld wireless comrnunication device 300 is also configured to send arnd receive voice eommunications such as mobile telephone calls. To facilitate telephor.e calls, two call keys 605, 609 ("outer keys") are provided in the upper, navigation row 70 (so-called because it includes the navig$tion tool assembly 327) at the outer ends of tte navigation row 70. One of the two call keys is a call initiation key 605, and the other is a call termination key 609. The navigation row 70 also includes another pair of keys ("flanking keys") that are located immediately adjacent to the navigation tool 327, with one flanking key on either side of the navigation tool 327. It is noted that the outer keys are referred to as such not because they are necessarily the outennost keys in i:he navigation row - there may be additional keys located even further outwardly of the outer keys if desired - but rather because they are located outwardly with respect to the flanking keys. The flanking keys rnay, for instance, constitute the menu keys 652, which include a menu call-up key 606 and an escape or back key 608. The menu call-up key 606 is used to bring up a menu on the display screen 322 and the escape key 608 is used to return to the previous screen or previous menu selection. The functions of the call keys and the rnenu keys may, of course, be provided by buttons that are located elsewhere on the device, with different functions assigned to the outer keys and the flanking keys.
Furthennore, the device is equipped with components to enable operation of various programs, as shown in FIG. 2. In an examplary embodiment, the flash memory 324 is enabled to provide a storage location for the operating system 408, device programs 358, and data. The operating system 408 is generally configured to manage other application programs 358 that are also stored in memory 324 and executable on f-ic processor 338. The operating system 408 honors requests for serviees made by application programs 358 through predefined application program 358 interfaces. More specifically, the operating system 408 typically determines the order in which multiple applieations 358 are executed on the processor 338 and the execution time allotted fDr each application 358, manages the sharing of memory 324 among multiple applications 358, handles input and output to and fxoxn other device subsystems 342, and so on. [n addition, users can typically interact directly with the operating system 408 through a user interface usually including the keyboard 332 and display screen 322_ While in..m examplary embodiment the operating system 408 is stored in flash memory 324, ttte operating system 408 in other embodiments is stored in read-only memory (ROM) or similar storage element (not shown). As those skilled in the art will appreciate, the operating system 408, device application 358 or parts thereof may be loaded in or other volatile memory.
In one examplary embodiment, the flash memory 324 contains prograrrxs/applications 358 for execution on the device 300 including an address book 352, a personal information manager (PIM) 354, and the device state 350.
Furthermon}, programs 358 and other infonnation 356 including data can be segregated upon storage in the flash memory 324 of the device 300.
Wlaen the device 300 is enabled for two-way communication wathin the wir,less communication network 319, it can send and receive signals from a mobile communication service. Examples of communiea.tion systems enabled for two-way communication include, but arc not limited to, the General Packet Radio Service (GPRS) network, the Universal Mobile Telecommunica.tion Service (UTMS) network, the Enhanced Data for Global Evolution (EDGE) network, and the Code Division Multiple Access (CDMA) network and those networks, generally described as packet-switclied, narrowband, data-only technologies which are mainly used for short burst wireless data transfer. For the systems listed above, the communication device 300 must be properly enabled to transnnit and receive signals from the communication network 319.
Qher systems may not require sach identifying information. GPRS, UMTS, and EDGE
require the use of a Subscriber Identity Module (SIM) in order to allow communication with the communication network 319. Likewise, most CDMA systems require the use of a Removable Identity Module (RUIM) in order to communicate witli the CDMA
network.
The RUIM and SIM card can be used in multiple different communication devices 300.
The communication device 300 may be able to operate some features withoui a SILV1/RU'IM card, but it will not be able to communicate with the network 319.
A
SIM/RUIM interface 344 located within the device 300 allows for removal or insertion of a SYM/RUIIVI card (not shown). The SIM/RUIM card features m,emory and holds key configurations 351, and other information 353 such as identification and subscriber related inforrnation- With a properly enabled communication device 300, two-way communication between the communication device 300 and communication network is possible.
If the communication device 300 is enabled as described above or the comtxiunication network 319 does not require such enablement, the two-way communication enabled device 300 is able to both transmit and receive information from the communication network 319. The transfer of communication can be from the devi.,c 300 or to the device 300. In order to cornmunicate with the communication network 319, the device 300 in the presently described examplary embodiment is equipped with tin integral or internal antenna 318 for transmitting signals to the communication n,etwork 319. Likewise the cotnruunication device 300 in the presently described examplary embodiment is equipped with another antenna 316 for receiving commtmication from the communication network 319. These antennae (316, 318) in another exampl.ary embodiment are combined into a single antenna (not shown). As one skilled in the art would appreciate, the antenna or antennae (316, 318) in another embodxmeni are externally mounted on the device 300.
VfJhen equipped for two-way communicat,ion, the communication device 300 featurgs a communication subsystem 311. As is well known in the art, this communication subsystem 311 is modified so that it can support the operational zteeds of the device 300. The subsystem 311 includes a transmitter 314 and receiver 312 incluiing the associated antcnna or antennae (316, 318) as described above, local oscillators (L,Os) 313, and a proceseing module 320 which in the presently described exarnplary embodiment is a digital signal processor (DSP) 320.
It is contemplated that communication by the device 300 with the wireless network 319 can be any type of communication that both the wireless network 319 and device 300 are enabled to transmit, reaeive and process. In general, these can be classified as voice and data. Voice communication is communication in which signals for audible sounds are transmitted by the device 300 through the comznunication network 319. Data is all other types of communication that the device 300 is capable of performing within the constra.nts of the wireless network 319.
hxample device applications that can depend on such data include email, cantacts and calendars. For each such application synchronization with home-based versions on the applications can be critical for either or both of their long term and short term util:.ty.
As an example, emails are often time sensitive, so substantially real time synchronizat.on is highly desirable. Contacts, on the other hand, can be usually updated less frequently without inconvenience. Therefore, the utility of the device 300 is significantly enhancted (if not enabled) when connectable within a communication system, and particularly w1"en connectable on a wireless basis in a network 319 in which voice, text messaging, and other data transfer are accomumodated.
Integration of the trackball assembly into handheld device 300 can be seen in the exploded view of FIG. 7 showing some of the typical components found in the assemtly of the handheld electronic device 300. The construction of the device benefits frcm various manufacturing simplifications. The internal components are predominantly constructed on a single PC$ (printed circuit board, not illustrated)_ The keyboard 332 c.in be constructed from a single piece of material, and in some embodiments is made from plastic. 'lfie keyboard 332 sits over dome switches (not shown) located on the PCB in one embodiment. While in the presently described examplary embodiment one switcl;
is provided for every key on the kayboard 332, in other embodiments more than one switch or less than one switch per key are provided. The keyboard light guide or chassis (lot shown) holds the keyboard 332 and trackball navigation tool 325 in place above the PCB.
A front housing cover I 1 is tnounted over tlte keyboard 332 and light guide.
The front housing cover 11 also provides an attachment point for the lens 13. The lens 13 coveis :he display, which is typically mounted on the PCB, to prevent damage to the display screm.
When assembled, the front housing cover 11 and the PCB are fixedly attached to eE.eh other and the display is positioned between the PCB and the front housing cover 11.
The trackball navigation tool 325 can be frictionally engaged with the frcint housing cover 11, and in one examplary embodiment the trackball navigation tool 325 is removable when the device is assembled. This allows for replacement of the trackball navigation tool 325 if/when it becomes damaged or the user desires replacernent wit1- a different type of trackball navigation tool 325. In the exampiary embodiment of FIG. 7, the navigation tool 328 is a bal1321 based device. Other multidirectional navigation tools 327 such as joysticks, four-way cursors, or touch pads are also considered to be within t:ie scope of this disclosure. The removal of the traclcball navigation tool 325 is enabl,:d through the use of an outer removable ring 23, the outer edge of which defines f-ia periphery of the navigation tool assembly 328. The ring 23 ensures that the navigation too1328 is properly held in place against the light guide.
A serial port (preferably a Universal Serial Bus port) 330 and an earphone jack 40 are fixedly attached to the PCB and further held in place by left side element 16. Buttons 30-32 may be attached to switches (not shown) which are connected to the PCB
12.
Final assembly involves placing a bottom piece 18 in contact with front housing cover 11 and back support frame 19. Furthermore, the assembly interconnects right side element 15 and left side element 16 with the front housing cover 11, bottom piece 18, back support frame 19, PCB, and lens 13. These side elements 15, 16 provide additional protection and strength to the support structure of the device 300. In the presently described examplary embodiment, backplate 14 is removably attached to the back support frame 19.
As intimated hereinabove, one of the more important aspects of the handl- eld electronic device 300 to which this disclosure is directed is its size. While some users will grasp the device 300 in both hands, it is intended that a predominance of users will cradle the device 300 in one hand in such a inanner that input and control over the device 300,;an be effmted using the thumb of the same hand in which the device 300 is held.
However, it is appreciated that additional control can be effected by using both hands. As a handheld device 300 that is easy to grasp and desirably pocketable, the size of the device 300 must be kept commensurately small. Of the device's dimensions, limiting its width is important for the purpose of assuring cradleability in a user's hand. Moreover, it is preferred that =he width of the device 300 be maintained at less than eight centimeters (approximately th-ee inches). Keeping the device 300 within these dimensional limits provides a hand cradleable unit that users prefer for its usability and portability.
Limitations with resp.-,ct to the height (length) of the device 300 are less stringent when considering harid-cradleability. Therefote, in order to gain greater size, the device 300 can be advantageously elongated so that its height is greater than its width, but still remains easily supported and operated in one b,and.
A potential drawback is presented by the small size of the device 300 in that there is Iimit.ed exterior surface area for the incausion of user input and device output features.
This is especially true for the "prime reaI estate" on the front face 370 of the davice 30, wbere it is most advantageous to include a display screen 322 that outputs information to the eiser. The display screen 322 is preferably located above a keyboard 332 that is utilized for data entry into the device 300 by the user. If the screen 322 is provided belcw the keyboard 332, a problem occurs in that viewing the screen 322* is inh,ibited when the user is inputting data using the keyboard 332. Therefore it is preferred that the dispLiy screen 322 be above the input area, thereby solving the problem by assuring that the hands and fingers do not block the view of the screen 322 during data entry periods.
To facilitate textual data entry into the device 300, an alphabetic keyboard 332 is provided. In the examplary illustrated embodiment, a full alphabetic keyboard 332 is utilized in which there is one key per letter (with some of the letter keys aiso having numbers, symbols, or functions associated with them). In this regard, the associated letters can be advantageously organized in QWERTY, QWERTZ, AZERTY, or Dvorak layouts, among others, thereby capitalizing on certain users' familiarity with these various lettcr orders_ In order to stay within the bounds of the limited front surface area, however, each of the keys must be commensurately small when, for example, twenty-six keys must be provided in the instance of the English language.
As shown in FIG. 1, the handheld electronic device 300 is cradleable in the palm of a user's hand. The handheld device 300 is provided with a keyboard 332 to enter text data and place telephone calls and a display screen 322 for communicating information to ihe user. A connect/scnd key 605 is preferably provided to aid in the placement of a phcne call. Additionally, a disconnect/end key 609 is provided. The send key 605 and end key 609 preferably are arranged in the navigation row 70 including the navigation tool 3f!7.
Additionally, the navigation row 70 preferably has a menu call-up key 606 and a back key or escape key 608.
The keyboard 332 includes a plurality of keys that can be of a physical nature suah as actuable buttons, or they can be of a software nature, typically constituted by virtual represmtations of physical keys on a display screen 322 (referred to herein as "virtLal keys"). It is also contemplated that the user input can be provided as a combination of tic two types of keys. Each key of the plurality of keys has at least one actuable action whi"h can be the input of a character, a command or a function. In this context, "ctaaraeters" are contemplated to exemplarily include alphabetic letters, language symbols, numbe,s, punctuation, insignias, icons, pictures, and even a blank space. Input commands and functions can include such things as delete, backspace, moving a cursor up, down, left or right, initiating an arithmetic function or command, initiating a command or function specific to an application program or feature in use, initiating a command or funetion progranzmed by the user and other such commands and functions that are well known to those persons skilled in the art. Specific keys or other types of input devices can be used to navigate through the various applications and features therevf. Further, depending on the application 358 or feature in use, specific keys can be enabled or disabled.
In the case of physical keys, all or a portion of the plurality of keys have one or more indicia representing character(s), command(s), and/or functions(s) displayed at their top surface and/or on the surface of the area adjacent the respective key. In the instance where the indicia of a key's function is provided adjacent the key, the indicia can be printed on the device cover beside the key, or in the instance of keys located adjacent the display screen 322. Additionally, current indicia for the key may be temporarily shown nearby the key on the screen 322.
In the case of virtual keys, the indicia for the respective keys are shown :)n the display screen 322, which in one embodiment is enabled by touching the display 3creen 322, for example, with a stylus to generate the character or activate the indicated command or function. Some examples of display screens 322 capable of detecting a touch include resistive, capacitive, projected capacitive, infrared and stuface acoustic wave (SAW) touchscreens.
Physical and virtual keys can be combined in many different ways as appreciated by those skilled in the azt. In one embodiment, physical and rrirtual keys are combined such that the plurality of enabled keys for a particular application or feature of the handheld electronic device 300 is shown on the display screen 322 in the same configuration as the physical keys. Using this configuration, the user can select the appropriate physical key corresponding to what is shown on the display screen 322. :'hus, the desired character, command or function is obtained by depressing the physical key corresponding to the character, command or function displayed at a corresponding position on the display screen 322, rather than touching the display screen 322.
The various characters, commands, and functions associated with keyboard typing in general are traditionally arranged using various conventions. The most comnno:-1 of these in the United States, for instanee, is the QWERTY keyboard layout.
Others inc:ude the QWERTZ, AZERTY, and Dvorak keyboard configurations. The QWERTY keyboard layout is the standard English-language alphabetic key arrangement 44a shown in FIG. 3a.
The QWERTZ keyboard layout is normally used in German-speaking regions; this alphabetic key arrangement 44b is shown in FIG. 3b. The AZERTY keyboard layout 44c is normally used in French-speaking regions and is shown in FIG. 3c. The Dvcrak keyboard layout was designed to allow typists to type faster, this alphabetic icey atrangement 44d is shown in FIG. 3d. In other examplary embodiznents, keyboards having multi-Ianguage key arrangements can be implemented.
Alphabetic key arrangements are often presented along with numerie key arrangements. Typically, the numbers 1-9 and 0 are positioned in the row above -:he alphabetic keys 44a-d, as shown in FIG. 3a-d Alternatively, the numbers share keys with the alphabetic characters, such as the top row of the QWERTY keyboard. Yet another examplary numeric key arrangement is shown in FIG. 4, where a"ten-key style nume"ic keypad 46 is provided on a separate set of keys that is spaced from the alphabetic/numeric key arrangement 44. Still further, ten-key numeric arrangements may be common with or shared with a subset of the alphabetic keys, as best shown in FIGS. 9 and 10.
The ten-key styled numeric keypad 46 includes the numbers "7", "8", "9" arranged in a top row, "4", "5", "6" arranged in a second row, "1", "2", "3" arranged in a third row, and "0" in a bottom row. Further, a numeric phone key arrangement 42 is exemplarily illustrated in FIG.5.
As shown in FIG. 5, the numeric phone key arrangement 42 may also utilize a surface treatment on the surface of the center "5" key. This surface treatment is configured such that the top surface of the key is distinctive from the surface of other keys.
Preferably the surface treatment is in the form of a raised bump or recessed dimple 43.
Alternatively, raised bumps may be positioned on the housing around the "5"
key and do not necessarily have to be positioned directly on the key.
It is desirable for handheld devices 300 to include a combined text-entry keybo-crd and a telephony keyboard_ Examples of such handheld devices 300 in.clude mobile stations, ceJlular telephones, wirelcss personal digital assistants (PDAs), two-way pagi:ag devices, and others. Various keyboards are used with such devices and can be termed a full keyboard, a reduced-fvnmat keyboard, or phone key pad. In embodiments of a handheld device 300 having a full keyboard, the alphabetic characters are singly associated with the plurality of physical keys. Thus, in an English-langnage keyboard af this configuration, there are at least 26 keys in the plurality, with one letter per alphabctic key.
FIGS. 5 and 6 both feature numeric keys arranged according to the TTU Standa-d E. 161 #'orm. In addition, FIG. 6 also in.corporates alphabetic characters according to the ITU Standard E. 161 layout as well.
Reference is now made to FIGS. 8-12, which disclose an examplary embodiment having a$ill alphabetic keyboard arrangement. In particular, as shown in FIGS.
8-12), only one letter of the alphabet is associated with any given alphabetic key within the ker,s of the keyfield. This is in contrast to reduced-format arrangements, in which multip:e letteira of the alphabet may be associated with at least some of the alphabetic keys of a keyboard. Additionally, as alluded to above and shown in the referenced figu.res, some of the alphabetic keys also have numbers, symbols, or functions associated with them. In the specifically illustrated embodiment, the alphabetic keys (including those also having numbers, symbols, or functions associated with thezn) are arranged in a QWERTY
arrangement, although any of the other full-keyboard atrangements (QWBRTZ, AZERTY, or Dvorak) may also be implemented within the scope of this disclosure.
To emulate as much as possible a full-sized keyboard as used, for example, with a personal computer, the alphabetic keys in the keyfield 650 are arranged in rows 72, 74, and 76. Furthermore, as is customary with such full-sized keyboards, the space key 80 is located in the center of the lowermost row 80 of the keyfield 650, below the letter (and to a certain extent number) rows 72, 74, and 76. To help make the hand-cradleable dimensions of the device poss;L;v, i;iG Shift keys ui are located at each of the outemost ends of the lowermost row 80. This is in contrast to a typical full-size keyboard, in which the shift keys are at the ends of the lowermost row of alphabetic keys.
Because they are the endmost keys of the lowermost row, the shift keys 82 are referred to as "corner k.-ys."
It is xtoted that in other arrangements that are deemed to be within the scope of this disclosure, the comer keys may have other functions besides or in addition to the shift function. AdditionaIly, even though the illustrated keyfield 650 is fairly rectangular since all four rows of keys 72, 74, 76, and 78 have the same physical length, the term "cerner keys" may also be used to describe the outermost keys in the Iowermost row of keys in arrangements where the lowermost row of keys is shozter than those above it.
In addition to the space key 80 and the shift (oorner) keys 82, the presently described embodixnent also includes an additional key on either side of the space key, between the space key and the eomcr keys, in the lowerRnost row of keys. For example, the presently described embodiment includes the "0" key 84 to the left of the space key 80 (part of the numeric keyfield superimposed or overlaid over certain keys of the alphabetic keyfield) and the "symbol" key 86 ("sym," used to indicate that a symbol instead of a letter is desired when pressing a given kcy) to the right of the space key 80.
As noted, the lowermost row of keys 78 is the same physical length as the other three rows of keys 72, 74, arxd 76 even though in the illustrated embodiment there are fewer keys in the lowermost row than there are in the rows above it.
"Iherefore, in addition to the space key 80 (which is conventionally several times longer than the rest of the keys in the ke}field on a full-size keyboard), the shift (corner) keys 82 are also longer than the keys in the rows above the lowerrnost row 78 in order to "fill out"
the lowermost row 78_ For example, as shown in the illustrated embodiment, the shift keys 82 are twi-;e as long as the keys in the rows above the lowermost row, and there are two keys (identifaed in more detail below) located above each shift key 82.
Alternatively, :n embodiments in wbich the only keys in the lowemlost row are the space key and the shift keys, the shift keys could be even longer than twice the width of the keys above them, amd there could, accordingly, be more than two keys above each of the shift keys.
k'urthermore, in accordance with emulating a full-size keyboard as much as possible, the right endmost key 88 in the row 76 above the lowermost row 78 (i e., immediately above the right-hand shift key 82) is the "enter" key. In some embodiments, the key immediately to the left of the "enter" key may be a funetion and/or a symbol ktiy, e.g., the speaker/"$" key as shown in the illustrated ernbodirnent.
On the other side of the keyf eld shown as being mirror-symmetric about a vertically oriented axis of symmetry, the left endmost key 90 in the row 76 above the lowermost row 78 (i.e., immediately above the left-hand shift key 82) is the "alt" key. In some embodiments, the key immediately to the right of the "alt" key will likely be an alphabetic key and may also constitute a numeric key, e.g., the "Z"/"7" key as shown in the illustrated embodinnent. The "enter" and "alt" keys (particularly the "cnter" key) are frequently used keys, particu.lar in the context of handheld wireless communication devices of the sort to which the present disclosure pertains. 'I'herefore, according to one teaching of this disclosure, certain features are incorporated into the corner keys 82 to facilitate easier access to the "enter" and "alt" keys immediately adjacent to said eoarner keys 82.
First, as illustrated in FIGS. 8-12 (FIG. l I in particular), the height of the corner keys with respoct to the face of the device body decreases toward their laterally outgr edges. As a result, (at Ieast portions of) the bottom edges of the keys immediately above the comer keys (i.e., "above-adjacent" keys) are higher than the laterally outer edges of the eomer keys. Depending on the relative sizes of the keys, this relationship may, but need not necessarily, extend laterally inwardly to more than just the outermost keys in the ro-v above the cozner keys. This relationship makes it easier to identify correctly, by feel, the keys above the comer keys. This is particularly advantageous in a device having a full keyboard arrangement where keys are typically smaller than in a reduced-format keyboard arrangement. For exarnple, as illustrated in FIG. 12, the corner key "target areas" 92 are located on the upper surfaces of the corner keys 82, but the regions of finger overlap 94 extend very close to the lower edges - and in some cases may actually overlap the Iowc:r edges - of the keys immediately above the comer keys 82.
1~
It should be appreciated that this relative height relationship is most advantagmus along the top edges of the corner keys and the bottom edges of the above-adjacent keys to the corner keys. Additionally, this decreasing relative height relatioaaship is most advantageous at the laterally outermost portions of the corner keys, although it preferably extends across the entire lateral width of the corner keys. Accordingly, it is sufficient for purposes of this disclosure for the corner keys to decrease in height from a laterally inner position (in contrast to an innerrnost edge) toward the laterally outermost edge.
Second, in addition to having the relative height relationship described immediately above, the corner keys are slightly truneated at their lowernaost, laterfdly outermost portions (bottom outboard corners) 96. In particular, this portion 96 of eac} of the corner keys 82 has a radius of convex curvature that is significantly larger than the radius of curvature of the other corner portions 98 of the corner keys. As a result, the lower edges of the corner keys transition smootltly and continuously into the laterally outcr edges of the ccirner keys without forming distinct corners at the lowermost, laterally outermost portions 96. This feature makes it easier to "reach over" the shift keys (corser keys 82) at the outer edges of the key field 650 to press the "enter" or "alt"
keys while closely approximating an overall generally rectangular arrangement of the key field 650, which enhances aesthetics.
In addition to this relative configuration of the corner keys 82 and the abovo-adjacent keys, the configuration of keys in the navigation row 70 - both with respect to the trackball navigation tool 325 and with respect to other keys in the navigation row 70 - is airanged such that it is easier to tactilely differentiate among the several "user inputs"
(e.g., the keys and the trackball navigation tool 325) in the navigation row 70 and to slidingly traverse the inputs, as well, Referring once again to the drawings, as best illustrated in FIGS. 13 and 14, the height of the menu keys 652 (namely the flankio;g menu call-up key 606 and the escape or back key 608) with respect to the face 370 of the device body decreases from the laterally outer edges of the flanking keys 652 toward their laterally inner edges. This deereasin g-height profile advantageously extends laterally across the entire width of the flanking ke_+s 652, although it suffices for purposes of this disclosure that it extends just from micl-portions of the flanking keys 652 toward their laterally inner edges. At their laterally inner edges, the flanking keys 652 are essentially the same height with respect to the face 370 of the device body as the peripheral portions 100 of the trackball navigation tool 325 (e.g., l6 the periphery' of the outer ring 23) at which the flanking keys 652 are adjacent to the trackball navigation tool 325. As a result of this configuration, the upper surfaces oi' the flanking keys 652 are generally tactilely continuous with the periphexal portions of the trackball navigation tool 325. The "valley" configuration of the flanking keys 652 ivith the trackball navigation tool 325 in the center "trougb" of the valley makes it very easy and comfortable for a user to navigate with the navigation row 70, "rocking"
back and forth between menus using the menu keys 652 to do so while navigating with the trackball navigation tool 325 as illustrated in FIGS. 15a, 15b, and 15c.
Additionally, at their laterally outer edges, the height of the flanking keys (with respect to the face of the device body) is greater than the height (with respect to the fact~ of the device body) of the laterally inner edges of the outer keys (e,g., the call initiate and call end buttons 605, 609). Furthermore, the laterally inner edges of the outer keys may be chamfered, as at 102, to increase the amount of height differential between the flanking keys 652 and the outer keys at the junction between them. Still fu.rther, in addition to sloping upwardly from their laterally inner edges toward their laterally outer edges, 'he flanking keys preferably have laterally outer edges that are hump-shaped or crowned, as best shown at 104 in FIG. 13. This combination of features makes it particularly easy to differentiate between the flanking keys 652 and the outer keys when selecting between them, as illustrated in FIGS. 15d and 15e. In particular, although the "target areas" 106 of the flanking keys 652 are generally centered on the upper surfaces of those keys, the regions 108 of finger overlap may extend beyond the outer edges of those keys and encroach on the outer keys, as illustrated in thosc two figures.
To fiuther enhance user comfort, the body of the device 300 may be referred to as a waisted, eenter-tapered, or necked-down configuration. La this regard, this disclosLre features a handheld wireless communication device 300 configured to send and receive text messages. The handheld device 300 includes a hand cradleable body configured to be held in a text entry orientation in one hand of an operator during text entry, as illustrated in FIGS, 1, Sb, Sc, and 8d. The body has a front face 370, a vertical cent.erline, and top and bottom portions 110, 112 relative to the text entry orientation. A display screen 322 is located on the front face of the body, and a microprocessor 338 is also provided to recei-e and prooess operator cornmands from user inputs located on the handheld device 300. A
key field 650 is also located on the front face of the body and includes a plurality of keys, of which plurality a portion are alphanumeric input keys. The alphanumeric input ke~%
include a plurality of alph,abetic keys having letters associated therewith that are azranged in a QWERTY, a QWERTZ, an AZERTY, or a Dvorak arrangernent, which facilitates text entry. The top and bottom portions of the body 110, 112 are wider than a mid-portion of said body 114, and right and left sides of said body 15, 16 are each concave.
Various specific arrangements of the handheld device 300 are possible with this configuration. For example, each of the right and left sides of the body may be substantially circularly arc shaped along at least two-thirds of a length of the bod.1 as measured along the longitudinal axis, with radius of curvature R as illustrated in FIG. 8a.
This renders the sides of the body of the handheld device 300 concave. The corners of the handheld device 300, on the other hand, are convex, and the handheld device 300 is confxgured such that the right and left sides of the body transition smoothly into reverse arc shapes (e_g., convex) proximate the corners of the body.
Suitably, the handheld device 300 includes a trackball navigation tool 325 that is located between the display screen 322 and the key field 650, with the trackball navigation tool 325 being located at a distance DI, D2, D3, and D4, respectively, from each of four eorners 116 of the body of the handhold device 300. Preferably, each of those four distances is less than one-tenth of the radius of curvature R of the right and left concz.ve sides of the body, which facilitates operator thumb control of the trackball navigation tool 325 and palm-eradling of the handheld device 300 (see FIG. 8d). Still further, the right and left sides of the body may each taper iato the top and bottom ends of said body, e.g., by means of chamfering at the corners.
To farther enhance user comfort, at least a portion of each of the right and left side surfaces of the body includes soft-touch material -'for exampl.e, material having a hardness less than 100 durometer. Suitably, the soft-touch material extends from the si.je surfaces of the body onto adjacent portions of a rear surface of said body.
The soft-touoh material may extend up a lower portion of the side surfaces approximately two-thirds of' a depth of the body (with the upper portions of the side surfaces being composed of material having a hardness greater than 100 durometer). In addition to extending toward the bac:k of the handheld device 300, the so$-touch material may also extend from the side surfaces of the body onto adjacent portions of a bottom end surface of the body. (Soft-touch material nnay be employed on devices that have other geometries than those described here,) Referring once again to the figures, the upper and lower ends 110, 112 of the device 300 (FIGS. 1, 8a) are slightly wider than the mid-portion 114 of the device 300, with the sides 15 and 16 being slightly concave. For example, in an examplIary embodiment, the ends 110, 112 of the device may be of the order of 62 millimetem in width, whereas the mid-portion 114 may be 60 millimeters in width. Such a flared top und bottom configuration fits more comfortably against the palm of the user's hand - in particular, against the fleshy part at the base of the thumb where the bottom flare is coneemed - and helps to prevent the device 300 from slipping out of the user's hand. The top-end side flare also provides a convenient and comfortable thumb rest (see FIG. 1) and facilitates uscr control over the device 300, particularly when the bottom flared portior, is firmly anchored in the user's palm as shown in FIGS. 1, 8b, 8c, and 8d.
Furthermore, the corners 116 of the device 300 are also configured to enhance user comfort. In particular, they are configured such that the left and right sides of the body transition smoothly into the upper and lower ends of the body. More particularly, the corners are ehamfered as shown in FIG. 1. This, too, enhances user comfort -particularly with respect to the lower corners - since the lower eorners in partictilar may be pressed firmly into the user's palm, especially during one-handed operation of the device 300.
Finally, with regard to user comfort features, the sides 15, 16 of the device 300 are preferably provided with (or even made entirely from) soft-touch material such as a rubberized coating, soft plastic, or the like. In this regard, the soft-touch material preferably covers the lower two-thirds of the sides 15, 16 of the device 300 (lower in tris context being taken firom the front of the device 300 toward the back of the device 30)) and covers the side wrap-around portions 15a, 16a of the body sides 15, 16 (see FIG. 7) .i*o as to extend at least partially onto the back surface of the device 300.
Additionally, the soft-touch material also preferably covers the bottom wrap-around portions ]
Sb, 16b of the body sides 15, 16 so as to extend at least partially onto the lowermost (i.e., the bottom end) surface of the device 300. In at least one embodiment, the soft-touch material also cwvc-..s the bottom portion of bottom piece 18. In combination with the concave eontoured sides 15, 16 and advantageously rounded corners thereof, the soft-touah matcrial renders the device 300 easier to grip and use. Conveniently, the soft-touch material provide.s improved comfort when holding the device 300.
As described above, the International Telecommunications Union ("ITU") ha.s established phone standards for the arrangement of alphanumeric keys. The standard phone numeric key arrangement shown in FIGS. 5 (no alphabetic letters) and 6(with alphabetic letters) corresponds to ITU Standard E_ 161, entitled "Arrangemen.t of Digits, Letters, and Symbols on Telephones and Other Devices That Can Be Used for Gaining Access to a Telephone Network." Tlis standard is also known as ANSI Tt.703-and ISO/IEC 9995-8:1994. As shown in FIG. 9, the numeric key arrangement can be overlaid on a QWERTY arrangement. The numeric arrangement as shown can be uptly described as a top-to-bottom ascending order tluee-by-three-over-zero pattern, While several keyboard layouts have been described above, the layouts can be described as having keys disposed on the keyboard in a QWERTY, reduced QWERTY, QWfiRTZ, Dvorak, or AZERTY key layout. These familiar keyboard layouts allow tisers to type more intuitively and quickly than, for example, on the standard alphabetic layout on a telephone pad. As mentioned above, the key anangements can be reduced compared to a standard layout thtough the use of more than one letter or character per key. By utilizing fewer keys, the keys can be made larger and therefore more convenient to the user.
Examplary embodiments have been described hereinabove regarding both handheld electronic devices 300, as well as the communication networks 319 within which they operate. Again, it should be appreciated that the focus of the present disclosurc: is enhanced usability of today's more sophisticated wireless handheld communication devices 300 taking into account the necessary busyness of the front face real estate of these more compact devices that incorporate additional user interfaces.
Claims (22)
1. A handheld wireless communication device configured to send and receive text messages, said device comprising;
a hand cradleable body configured to be held in a text entry orientation in one hand of an operator of said device during text entry, said body having a front face, a vertical centerline, and top and bottom portions relative the text entry orientation;
a display located on said front face of said body and upon which information is displayed to the operator of said device and a microprocessor configured to receive operator commands from user inputs located on said device;
a key field located at said front face of said body, said key field comprising a plurality of keys of which a portion are alphanumeric input keys, said alphanumeric input keys comprising a plurality of alphabetic keys; and said top and bottom portions of said body are wider than a mid-portion of said body located there between and wherein right and left sides of said body are each concave.
a hand cradleable body configured to be held in a text entry orientation in one hand of an operator of said device during text entry, said body having a front face, a vertical centerline, and top and bottom portions relative the text entry orientation;
a display located on said front face of said body and upon which information is displayed to the operator of said device and a microprocessor configured to receive operator commands from user inputs located on said device;
a key field located at said front face of said body, said key field comprising a plurality of keys of which a portion are alphanumeric input keys, said alphanumeric input keys comprising a plurality of alphabetic keys; and said top and bottom portions of said body are wider than a mid-portion of said body located there between and wherein right and left sides of said body are each concave.
2. The handheld wireless communication device as recited in claim 1, wherein said plurality of alphabetic keys have letters associated therewith that are arranged in one of a QWERTY, QWERTZ, AZERTY, and Dvorak arrangement for facilitating text entry.
3. The handheld wireless communication device as recited in claim 1, wherein said body is elongate with a longitudinal axis parallel to said vertical centerline relative the text entry orientation and each of said right and left sides of said body are substantialy circularly arc-shaped along at least two-thirds of a length of said body measured along said longitudinal axis.
4. The handheld wireless communication device as recited in claim 1, wherein each of said right and left sides of said body transition smoothly into reverse arc shapes proximate corners of said body.
5. The handheld wireless communication device as recited in claim 1, further comprising a trackball navigation tool disposed at said front face of said body between said display and said key field, said trackball navigation tool being located at a distance from each of four corners of said body and wherein each of said distances is less than,me-tenth of a radius of curvature of said right and left concave sides of said body thereby facilitating operator thumb control of said trackball navigation tool and palm-cradling of said device.
6. The handheld wireless communication device as recited in claim 4, wherein said right and left sides of said body each taper into top and bottom ends of said body.
7. The handheld wireless communication device as recited in claim 4, wherein said right and left sides of said body are chamfered at said corners of said body.
8. The handheld wireless communication device as recited in claim 1, wherein at least a portion of each of right and left side surfaces of said body comprise soft-touch material.
9. The handheld wireless communication device as recited in claim 8, wherein the hardness of said soft-touch material is less than 100 durometer.
10. The handheld wireless communication device as recited in claim 8, wherein said soft-touch material extends from said side surfaces of said body onto adjacent portions of a rear surface of said body,
11. The handheld wireless communication device as recited in claim 8, wherein said soft-touch material extends up a lower portion of said side surfaces approximately two-thirds of a depth of said body.
12. The handheld wireless communication device as recited in claim 11, wherein the hardness of said soft-touch material is less than 100 durometer.
13. The handheld wireless communication device as recited in claim 12, wherein an upper portion of said side surfaces are composed of material having a hardness greater than 100 durometer.
14. The handheld wireless communication device as recited in claim 8, wherein said soft-touch material extends from said side surfaces of said body onto adjacent portions of a bottom end surface of said body.
15. A handhold wireless communication device configured to send and receive text messages, said device comprising:
a hand cradleable body configured to be held in a text entry orientation in one hand of an operator of said device during text entry, said body having a front face, a vertical centerline, and top and bottom portions relative the text entry orientation;
a display located on said front face of said body and upon which information is displayed to the operator of said device and a microprocessor configured to receive operator commands from user inputs located on said device;
a key field located at said front face of said body, said key field comprising a plurality of keys of which a portion are alphanumeric input keys, said alphanumeric input keys comprising a plurality of alphabetic keys; and at least a portion of each of right and left side surfaces of said body comprise soft-touch material.
a hand cradleable body configured to be held in a text entry orientation in one hand of an operator of said device during text entry, said body having a front face, a vertical centerline, and top and bottom portions relative the text entry orientation;
a display located on said front face of said body and upon which information is displayed to the operator of said device and a microprocessor configured to receive operator commands from user inputs located on said device;
a key field located at said front face of said body, said key field comprising a plurality of keys of which a portion are alphanumeric input keys, said alphanumeric input keys comprising a plurality of alphabetic keys; and at least a portion of each of right and left side surfaces of said body comprise soft-touch material.
16. The handheld wireless communication device as recited in claim 15, wherein said plurality of alphabetic keys have letters associated therewith that are arranged in one of a QWERTY, QWERTZ, AZERTY, and Dvorak arrangement for facilitating text entry.
17. The handheld wireless communication device as recited in claim 15, wherein the hardness of said soft-touch material is less than 100 durometer.
18, The handheld wireless communication device as recited in claim 15, wherein said soft-touch material extends from said side surfaces of said body onto adjacent portions of a rear surface of said body.
19. The handheld wireless communication device as recited in claim 15, wherein said soft-touch material extends up a lower portion of said side surfaces approximately two-thirds of a depth of said body.
20. The handheld wireless communication device as recited in claim 19, wherein the hardness of said soft-touch material is less than 100 durometer.
21. The handheld wireless communication device as recited in claim 20, wherein an upper portion of said side surfaces are composed of material having a hardness greater than 100 durometer.
22. The handheld wireless communication device as recited in claim 15, wherein said soft-touch material extends from said side surfaces of said body onto adjacent portions of a bottom end surface of said body.
Applications Claiming Priority (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US82689806P | 2006-09-25 | 2006-09-25 | |
| US60/826,898 | 2006-09-25 | ||
| US11/738,999 US20080074395A1 (en) | 2006-09-25 | 2007-04-23 | Concave handheld mobile device with tactile side grip |
| US11/738,999 | 2007-04-23 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2603793A1 true CA2603793A1 (en) | 2008-03-25 |
Family
ID=39264219
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2603793 Abandoned CA2603793A1 (en) | 2006-09-25 | 2007-09-25 | Concave handheld mobile device with tactile side grip |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2603793A1 (en) |
-
2007
- 2007-09-25 CA CA 2603793 patent/CA2603793A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |
Effective date: 20130925 |