US20080074395A1 - Concave handheld mobile device with tactile side grip - Google Patents

Concave handheld mobile device with tactile side grip Download PDF

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Publication number
US20080074395A1
US20080074395A1 US11/738,999 US73899907A US2008074395A1 US 20080074395 A1 US20080074395 A1 US 20080074395A1 US 73899907 A US73899907 A US 73899907A US 2008074395 A1 US2008074395 A1 US 2008074395A1
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Prior art keywords
keys
wireless communication
communication device
recited
handheld wireless
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US11/738,999
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English (en)
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Roman P. Rak
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Malikie Innovations Ltd
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Individual
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Application filed by Individual filed Critical Individual
Priority to US11/738,999 priority Critical patent/US20080074395A1/en
Priority to CA 2603793 priority patent/CA2603793A1/en
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Publication of US20080074395A1 publication Critical patent/US20080074395A1/en
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Assigned to MALIKIE INNOVATIONS LIMITED reassignment MALIKIE INNOVATIONS LIMITED ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BLACKBERRY LIMITED
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/84—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard characterised by ergonomic functions, e.g. for miniature keyboards; characterised by operational sensory functions, e.g. sound feedback
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • G06F3/0219—Special purpose keyboards
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1626—Constructional details or arrangements for portable computers with a single-body enclosure integrating a flat display, e.g. Personal Digital Assistants [PDAs]
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1656—Details related to functional adaptations of the enclosure, e.g. to provide protection against EMI, shock, water, or to host detachable peripherals like a mouse or removable expansions units like PCMCIA cards, or to provide access to internal components for maintenance or to removable storage supports like CDs or DVDs, or to mechanically mount accessories
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1662—Details related to the integrated keyboard
    • G06F1/1664—Arrangements for ergonomically adjusting the disposition of keys of the integrated keyboard
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
    • G06F1/16—Constructional details or arrangements
    • G06F1/1613—Constructional details or arrangements for portable computers
    • G06F1/1633—Constructional details or arrangements of portable computers not specific to the type of enclosures covered by groups G06F1/1615 - G06F1/1626
    • G06F1/1684—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675
    • G06F1/169—Constructional details or arrangements related to integrated I/O peripherals not covered by groups G06F1/1635 - G06F1/1675 the I/O peripheral being an integrated pointing device, e.g. trackball in the palm rest area, mini-joystick integrated between keyboard keys, touch pads or touch stripes
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F15/00—Digital computers in general; Data processing equipment in general
    • G06F15/02—Digital computers in general; Data processing equipment in general manually operated with input through keyboard and computation using a built-in program, e.g. pocket calculators
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/02—Input arrangements using manually operated switches, e.g. using keyboards or dials
    • G06F3/0202—Constructional details or processes of manufacture of the input device
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/03—Arrangements for converting the position or the displacement of a member into a coded form
    • G06F3/033—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor
    • G06F3/0354—Pointing devices displaced or positioned by the user, e.g. mice, trackballs, pens or joysticks; Accessories therefor with detection of 2D relative movements between the device, or an operating part thereof, and a plane or surface, e.g. 2D mice, trackballs, pens or pucks
    • G06F3/03549—Trackballs
    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00—Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/01—Input arrangements or combined input and output arrangements for interaction between user and computer
    • G06F3/048—Interaction techniques based on graphical user interfaces [GUI]
    • G06F3/0487—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser
    • G06F3/0488—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures
    • G06F3/04886—Interaction techniques based on graphical user interfaces [GUI] using specific features provided by the input device, e.g. functions controlled by the rotation of a mouse with dual sensing arrangements, or of the nature of the input device, e.g. tap gestures based on pressure sensed by a digitiser using a touch-screen or digitiser, e.g. input of commands through traced gestures by partitioning the display area of the touch-screen or the surface of the digitising tablet into independently controllable areas, e.g. virtual keyboards or menus
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/70—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard
    • H01H13/702—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches
    • H01H13/705—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch having a plurality of operating members associated with different sets of contacts, e.g. keyboard with contacts carried by or formed from layers in a multilayer structure, e.g. membrane switches characterised by construction, mounting or arrangement of operating parts, e.g. push-buttons or keys
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H13/00—Switches having rectilinearly-movable operating part or parts adapted for pushing or pulling in one direction only, e.g. push-button switch
    • H01H13/02—Details
    • H01H13/12—Movable parts; Contacts mounted thereon
    • H01H13/14—Operating parts, e.g. push-button
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2219/00—Legends
    • H01H2219/054—Optical elements
    • H01H2219/062—Light conductor
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
    • H01H2221/00—Actuators
    • H01H2221/008—Actuators other then push button
    • H01H2221/012—Joy stick type

Definitions

  • This disclosure in a broad sense, is directed toward handheld electronic devices; and more specifically to handheld communication devices that have wireless communication capabilities and the networks within which the wireless communication devices operate.
  • the present disclosure further 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 thumb-manipulation of an included navigation tool on the device.
  • 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 have become popular.
  • Cell phones, for example, are now sized to fit in one's pocket or the palm of the hand.
  • the size of the devices has decreased, the more important it has become to utilize the entire keyboard surface as efficiently as possible.
  • keyboards on mobile devices have an input device for navigation through 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 relatively 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 normally be observed by device designers. To accommodate such larger, more convenient navigation devices on the housing of the mobile device, the amount of space that is available for the keys of the keyboard is correspondingly reduced if the keyboard and navigational device are proximately located to one another.
  • Another keyboard spacing problem is that of finger overlap and key differentiation when keys 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.
  • a full keyboard as opposed to a reduced-format keyboard
  • the present disclosure provides solutions to these concerns.
  • FIG. 1 illustrates a handheld communication device configured according to the present teachings cradled in the palm of a user's hand;
  • FIG. 2 is a block diagram representing a wireless handheld communication device interacting in a communication network
  • FIG. 3 a illustrates an exemplary QWERTY keyboard layout
  • FIG. 3 b illustrates an exemplary QWERTZ keyboard layout
  • FIG. 3 c illustrates an exemplary AZERTY keyboard layout
  • FIG. 3 d illustrates an exemplary Dvorak keyboard layout
  • FIG. 4 illustrates a QWERTY keyboard layout paired with a traditional ten-key keyboard
  • FIG. 5 illustrates ten digits comprising the numerals 0 - 9 arranged in a traditional, 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 according to the ITU Standard E.161 including both numerals and letters;
  • FIG. 8 a is a plan view of the handheld communication device illustrated in FIG. 1 illustrating dimensional aspects of the body of the device;
  • FIGS. 8 b, 8 c, and 8 d further illustrate the handheld communication device of FIGS. 1 and 8 a 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. 11 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 section view of the navigation row illustrated in FIG. 13 ;
  • FIGS. 15 a - 15 e illustrate a user using the navigation row illustrated in FIGS. 13 and 14 .
  • FIG. 1 An exemplary 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 .
  • FIG. 2 An exemplary 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 .
  • the device 300 includes a microprocessor 338 that controls the operation of the device 300 .
  • a communication subsystem 311 performs all communication transmission and reception with the wireless network 319 .
  • the microprocessor 338 further connects with an auxiliary input/output (I/O) subsystem 328 , a serial port (preferably a Universal Serial Bus port) 330 , a display 322 , a keyboard 332 , a speaker 334 , a microphone 336 , random access memory (RAM) 326 , and flash memory 324 .
  • I/O auxiliary input/output
  • serial port preferably a Universal Serial Bus port
  • 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 that of a short range communication system such as BLUETOOTH® communication module or a Wi-Fi communication module (a communication module in compliance with IEEE 802.11b) and associated circuits and components. Additionally, the microprocessor 338 is able to perform operating system functions and preferably enables execution of software applications on the communication device 300 .
  • the auxiliary I/O subsystem 328 can take the form of a variety of different navigation tools (multi-directional or single-directional) such as a trackball navigation tool 325 as illustrated in the exemplary embodiment shown in FIG. 9 , or a thumbwheel, a navigation pad, a joystick, or the like. These navigation tools are preferably located on the front surface of the device 300 but may be located on any exterior surface of the device 300 .
  • Other auxiliary I/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 I/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 function as escape keys, volume control keys, scrolling keys, power switches, or user programmable keys, and may likewise be programmed accordingly.
  • the handheld communication device 300 comprises a lighted display 322 located above a keyboard 332 constituting a user input and suitable for accommodating textual input to the handheld communication device 300 .
  • the front face of the device has a navigation row 70 and a key field 650 that includes alphanumeric keys 630 , alphabetic keys 632 , numeric keys 42 , and other function keys as shown in FIG. 1 .
  • the device 300 is of unibody construction, also known as a “candy-bar” design.
  • 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 device 300 . Its front face location is particularly advantageous because it makes the tool easily thumb-actuable like the keys of the keyboard.
  • a particularly usable embodiment provides the navigational tool 327 in the form of a trackball 321 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 ).
  • the present disclosure is directed to a handheld wireless communication device 300 configured to send and receive text messages.
  • the 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 face 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 also located on the front face 370 of the body.
  • the alphanumeric input keys comprise a plurality of alphabetic and/or numeric keys 632 having letters and/or numbers associated therewith.
  • the order of the letters 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 300 .
  • persons skilled in these arts who design devices 300 of the nature defined herein would not look to devices that include an ITU Standard E.161 alphabetic telephone keypad configuration because of the substantial deficiencies that exist where text input beyond short messaging services (SMS) is required, such as for emailing.
  • SMS short messaging services
  • the handheld wireless communication device 300 is also configured to send and receive voice communications such as mobile telephone calls.
  • two call keys 605 , 609 (“outer keys”) are provided in the upper, navigation row 70 (so-called because it includes the navigation tool assembly 327 ) at the outer ends of the navigation row 70 .
  • One of the two call keys is a call initiation key 605
  • 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 .
  • the flanking keys may, 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 menu 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.
  • the device is equipped with components to enable operation of various programs, as shown in FIG. 2 .
  • 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 the processor 338 .
  • the operating system 408 honors requests for services made by application programs 358 through predefined application program 358 interfaces.
  • the operating system 408 typically determines the order in which multiple applications 358 are executed on the processor 338 and the execution time allotted for each application 358 , manages the sharing of memory 324 among multiple applications 358 , handles input and output to and from other device subsystems 342 , and so on.
  • users can typically interact directly with the operating system 408 through a user interface usually including the keyboard 332 and display screen 322 .
  • the operating system 408 is stored in flash memory 324
  • the operating system 408 in other embodiments is stored in read-only memory (ROM) or similar storage element (not shown).
  • ROM read-only memory
  • the operating system 408 , device application 358 or parts thereof may be loaded in RAM 326 or other volatile memory.
  • the flash memory 324 contains programs/applications 358 for execution on the device 300 including an address book 352 , a personal information manager (PIM) 354 , and the device state 350 . Furthermore, programs 358 and other information 356 including data can be segregated upon storage in the flash memory 324 of the device 300 .
  • PIM personal information manager
  • the device 300 When the device 300 is enabled for two-way communication within the wireless communication network 319 , it can send and receive signals from a mobile communication service.
  • Examples of communication systems enabled for two-way communication include, but are not limited to, the General Packet Radio Service (GPRS) network, the Universal Mobile Telecommunication 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-switched, narrowband, data-only technologies which are mainly used for short burst wireless data transfer.
  • GPRS General Packet Radio Service
  • UTMS Universal Mobile Telecommunication Service
  • EDGE Enhanced Data for Global Evolution
  • CDMA Code Division Multiple Access
  • the communication device 300 must be properly enabled to transmit and receive signals from the communication network 319 . Other systems may not require such 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 .
  • SIM Subscriber Identity Module
  • RUIM Removable Identity Module
  • 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 without a SIM/RUIM 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 SIM/RUIM card (not shown).
  • the SIM/RUIM card features memory and holds key configurations 351 , and other information 353 such as identification and subscriber related information. With a properly enabled communication device 300 , two-way communication between the communication device 300 and communication network 319 is possible.
  • 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 device 300 or to the device 300 .
  • the device 300 in the presently described exemplary embodiment is equipped with an integral or internal antenna 318 for transmitting signals to the communication network 319 .
  • the communication device 300 in the presently described exemplary embodiment is equipped with another antenna 316 for receiving communication from the communication network 319 .
  • These antennae ( 316 , 318 ) in another exemplary embodiment are combined into a single antenna (not shown).
  • the antenna or antennae ( 316 , 318 ) in another embodiment are externally mounted on the device 300 .
  • the communication device 300 When equipped for two-way communication, the communication device 300 features a communication subsystem 311 . As is well known in the art, this communication subsystem 311 is modified so that it can support the operational needs of the device 300 .
  • the subsystem 311 includes a transmitter 314 and receiver 312 including the associated antenna or antennae ( 316 , 318 ) as described above, local oscillators (LOs) 313 , and a processing module 320 which in the presently described exemplary embodiment is a digital signal processor (DSP) 320 .
  • DSP digital signal processor
  • 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, receive 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 communication network 319 .
  • Data is all other types of communication that the device 300 is capable of performing within the constraints of the wireless network 319 .
  • Example device applications that can depend on such data include email, contacts 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 utility. As an example, emails are often time sensitive, so substantially real time synchronization 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 enhanced (if not enabled) when connectable within a communication system, and particularly when connectable on a wireless basis in a network 319 in which voice, text messaging, and other data transfer are accommodated.
  • the construction of the device benefits from various manufacturing simplifications.
  • the internal components are predominantly constructed on a single PCB (printed circuit board, not illustrated).
  • the keyboard 332 can be constructed from a single piece of material, and in some embodiments is made from plastic.
  • the keyboard 332 sits over dome switches (not shown) located on the PCB in one embodiment. While in the presently described exemplary embodiment one switch is provided for every key on the keyboard 332 , in other embodiments more than one switch or less than one switch per key are provided.
  • the keyboard light guide or chassis (not shown) holds the keyboard 332 and trackball navigation tool 325 in place above the PCB.
  • a front housing cover 11 is mounted over the keyboard 332 and light guide.
  • the front housing cover 11 also provides an attachment point for the lens 13 .
  • the lens 13 covers the display, which is typically mounted on the PCB, to prevent damage to the display screen. When assembled, the front housing cover 11 and the PCB are fixedly attached to each 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 front housing cover 11 , and in one exemplary 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 replacement with a different type of trackball navigation tool 325 .
  • the navigation tool 328 is a ball 321 based device.
  • Other multidirectional navigation tools 327 such as joysticks, four-way cursors, or touch pads are also considered to be within the scope of this disclosure.
  • the removal of the trackball navigation tool 325 is enabled through the use of an outer removable ring 23 , the outer edge of which defines the periphery of the navigation tool assembly 328 .
  • the ring 23 ensures that the navigation tool 328 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 exemplary embodiment, backplate 14 is removably attached to the back support frame 19 .
  • the handheld electronic device 300 As intimated hereinabove, one of the more important aspects of the handheld 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 manner that input and control over the device 300 can be effected 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.
  • the width of the device 300 be maintained at less than eight centimeters (approximately three inches). Keeping the device 300 within these dimensional limits provides a hand cradleable unit that users prefer for its usability and portability. Limitations with respect to the height (length) of the device 300 are less stringent when considering hand-cradleability. Therefore, 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 hand.
  • a potential drawback is presented by the small size of the device 300 in that there is limited exterior surface area for the inclusion of user input and device output features. This is especially true for the “prime real estate” on the front face 370 of the device 300 , where it is most advantageous to include a display screen 322 that outputs information to the user.
  • 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 below the keyboard 332 , a problem occurs in that viewing the screen 322 is inhibited when the user is inputting data using the keyboard 332 . Therefore it is preferred that the display 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.
  • an alphabetic keyboard 332 is provided.
  • a full alphabetic keyboard 332 is utilized in which there is one key per letter (with some of the letter keys also having numbers, symbols, or functions associated with them).
  • 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 letter orders.
  • each of the keys 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.
  • 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 the user.
  • a connect/send key 605 is preferably provided to aid in the placement of a phone call.
  • 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 327 .
  • 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 such as actuable buttons, or they can be of a software nature, typically constituted by virtual representations of physical keys on a display screen 322 (referred to herein as “virtual keys”). It is also contemplated that the user input can be provided as a combination of the two types of keys. Each key of the plurality of keys has at least one actuable action which can be the input of a character, a command or a function.
  • “characters” are contemplated to exemplarily include alphabetic letters, language symbols, numbers, 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 function programmed 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 thereof. Further, depending on the application 358 or feature in use, specific keys can be enabled or disabled.
  • 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.
  • 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 .
  • the indicia for the respective keys are shown on the display screen 322 , which in one embodiment is enabled by touching the display screen 322 , for example, with a stylus to generate the character or activate the indicated command or function.
  • display screens 322 capable of detecting a touch include resistive, capacitive, projected capacitive, infrared and surface acoustic wave (SAW) touchscreens.
  • Physical and virtual keys can be combined in many different ways as appreciated by those skilled in the art.
  • physical and virtual 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 .
  • 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 common of these in the United States, for instance, is the QWERTY keyboard layout. Others include the QWERTZ, AZERTY, and Dvorak keyboard configurations.
  • the QWERTY keyboard layout is the standard English-language alphabetic key arrangement 44 a shown in FIG. 3 a.
  • the QWERTZ keyboard layout is normally used in German-speaking regions; this alphabetic key arrangement 44 b is shown in FIG. 3 b.
  • the AZERTY keyboard layout 44 c is normally used in French-speaking regions and is shown in FIG. 3 c.
  • the Dvorak keyboard layout was designed to allow typists to type faster; this alphabetic key arrangement 44 d is shown in FIG. 3 d.
  • keyboards having multi-language key arrangements can be implemented.
  • Alphabetic key arrangements are often presented along with numeric key arrangements.
  • the numbers 1 - 9 and 0 are positioned in the row above the alphabetic keys 44 a - d, as shown in FIG. 3 a - d.
  • the numbers share keys with the alphabetic characters, such as the top row of the QWERTY keyboard.
  • FIG. 4 Yet another exemplary numeric key arrangement is shown in FIG. 4 , where a “ten-key” style numeric keypad 46 is provided on a separate set of keys that is spaced from the alphabetic/numeric key arrangement 44 .
  • 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 .
  • 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.
  • the surface treatment is in the form of a raised bump or recessed dimple 43 .
  • raised bumps may be positioned on the housing around the “5” key and do not necessarily have to be positioned directly on the key.
  • handheld devices 300 it is desirable for handheld devices 300 to include a combined text-entry keyboard and a telephony keyboard.
  • handheld devices 300 include mobile stations, cellular telephones, wireless personal digital assistants (PDAs), two-way paging devices, and others.
  • PDAs personal digital assistants
  • Various keyboards are used with such devices and can be termed a full keyboard, a reduced-format keyboard, or phone key pad.
  • the alphabetic characters are singly associated with the plurality of physical keys.
  • FIGS. 5 and 6 both feature numeric keys arranged according to the ITU Standard E. 161 form.
  • FIG. 6 also incorporates alphabetic characters according to the ITU Standard E. 161 layout as well.
  • FIGS. 8-12 disclose an exemplary embodiment having a full alphabetic keyboard arrangement.
  • only one letter of the alphabet is associated with any given alphabetic key within the keys of the keyfield. This is in contrast to reduced-format arrangements, in which multiple letters of the alphabet may be associated with at least some of the alphabetic keys of a keyboard.
  • some of the alphabetic keys also have numbers, symbols, or functions associated with them.
  • the alphabetic keys are arranged in a QWERTY arrangement, although any of the other full-keyboard arrangements (QWERTZ, AZERTY, or Dvorak) may also be implemented within the scope of this disclosure.
  • the alphabetic keys in the keyfield 650 are arranged in rows 72 , 74 , and 76 .
  • 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 .
  • the shift keys 82 are located at each of the outermost 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.
  • the shift keys 82 are referred to as “corner keys.” It is noted that in other arrangements that are deemed to be within the scope of this disclosure, the corner keys may have other functions besides or in addition to the shift function. Additionally, 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 “corner keys” may also be used to describe the outermost keys in the lowermost row of keys in arrangements where the lowermost row of keys is shorter than those above it.
  • the presently described embodiment also includes an additional key on either side of the space key, between the space key and the corner keys, in the lowermost row of keys.
  • 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 key) to the right of the space key 80 .
  • the lowermost row of keys 78 is the same physical length as the other three rows of keys 72 , 74 , and 76 even though in the illustrated embodiment there are fewer keys in the lowermost row than there are in the rows above it. Therefore, in addition to the space key 80 (which is conventionally several times longer than the rest of the keys in the keyfield on a full-size keyboard), the shift (corner) keys 82 are also longer than the keys in the rows above the lowermost row 78 in order to “fill out” the lowermost row 78 .
  • the shift keys 82 are twice as long as the keys in the rows above the lowermost row, and there are two keys (identified in more detail below) located above each shift key 82 .
  • the shift keys could be even longer than twice the width of the keys above them, and there could, accordingly, be more than two keys above each of the shift keys.
  • the right endmost key 88 in the row 76 above the lowermost row 78 is the “enter” key.
  • the key immediately to the left of the “enter” key may be a function and/or a symbol key, e.g., the speaker/“$” key as shown in the illustrated embodiment.
  • the left endmost key 90 in the row 76 above the lowermost row 78 is the “alt” key.
  • 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 embodiment.
  • the “enter” and “alt” keys are frequently used keys, particular in the context of handheld wireless communication devices of the sort to which the present disclosure pertains. Therefore, 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 corner keys 82 .
  • the height of the corner keys with respect to the face of the device body decreases toward their laterally outer edges.
  • (at least portions of) the bottom edges of the keys immediately above the corner keys i.e., “above-adjacent” keys
  • this relationship may, but need not necessarily, extend laterally inwardly to more than just the outermost keys in the row above the corner keys. This relationship makes it easier to identify correctly, by feel, the keys above the corner 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 example, as illustrated in FIG.
  • 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 lower edges—of the keys immediately above the corner keys 82 .
  • this relative height relationship is most advantageous 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 relationship 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 innermost edge) toward the laterally outermost edge.
  • the corner keys are slightly truncated at their lowermost, laterally outermost portions (bottom outboard corners) 96 .
  • this portion 96 of each 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.
  • This feature makes it easier to “reach over” the shift keys (corner 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.
  • the configuration of keys in the navigation row 70 is arranged 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.
  • the height of the menu keys 652 (namely the flanking 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 decreasing-height profile advantageously extends laterally across the entire width of the flanking keys 652 , although it suffices for purposes of this disclosure that it extends just from mid-portions of the flanking keys 652 toward their laterally inner edges.
  • 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., the periphery of the outer ring 23 ) at which the flanking keys 652 are adjacent to the trackball navigation tool 325 .
  • the upper surfaces of the flanking keys 652 are generally tactilely continuous with the peripheral portions of the trackball navigation tool 325 .
  • the height of the flanking keys is greater than the height (with respect to the face of the device body) of the laterally inner edges of the outer keys (e.g., the call initiate and call end buttons 605 , 609 ).
  • 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.
  • the flanking keys in addition to sloping upwardly from their laterally inner edges toward their laterally outer edges, the flanking keys preferably have laterally outer edges that are hump-shaped or crowned, as best shown at 104 in FIG. 13 .
  • flanking keys 652 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. 15 d and 15 e.
  • 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 those two figures.
  • the body of the device 300 may be referred to as a waisted, center-tapered, or necked-down configuration.
  • this disclosure 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 , 8 b, 8 c, and 8 d.
  • the body has a front face 370 , a vertical centerline, 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 receive and process operator commands 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 keys include a plurality of alphabetic keys having letters associated therewith that are arranged in a QWERTY, a QWERTZ, an AZERTY, or a Dvorak arrangement, 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.
  • 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 body as measured along the longitudinal axis, with radius of curvature R as illustrated in FIG. 8 a.
  • This renders the sides of the body of the handheld device 300 concave.
  • the corners of the handheld device 300 are convex, and the handheld device 300 is configured 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.
  • 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 D 1 , D 2 , D 3 , and D 4 , respectively, from each of four corners 116 of the body of the handheld device 300 .
  • each of those four distances is less than one-tenth of the radius of curvature R of the right and left concave sides of the body, which facilitates operator thumb control of the trackball navigation tool 325 and palm-cradling of the handheld device 300 (see FIG. 8 d ).
  • the right and left sides of the body may each taper into the top and bottom ends of said body, e.g., by means of chamfering at the corners.
  • each of the right and left side surfaces of the body includes soft-touch material—for example, material having a hardness less than 100 durometer.
  • the soft-touch material extends from the side surfaces of the body onto adjacent portions of a rear surface of said body.
  • the soft-touch 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).
  • the soft-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 may be employed on devices that have other geometries than those described here.)
  • the upper and lower ends 110 , 112 of the device 300 are slightly wider than the mid-portion 114 of the device 300 , with the sides 15 and 16 being slightly concave.
  • the ends 110 , 112 of the device may be of the order of 62 millimeters in width, whereas the mid-portion 114 may be 60 millimeters in width.
  • Such a flared top and 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 concerned—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 user control over the device 300 , particularly when the bottom flared portion is firmly anchored in the user's palm as shown in FIGS. 1 , 8 b, 8 c, and 8 d.
  • the corners 116 of the device 300 are also configured to enhance user comfort.
  • 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 chamfered as shown in FIG. 1 . This, too, enhances user comfort—particularly with respect to the lower corners—since the lower corners in particular may be pressed firmly into the user's palm, especially during one-handed operation of the device 300 .
  • 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.
  • the soft-touch material preferably covers the lower two-thirds of the sides 15 , 16 of the device 300 (lower in this context being taken from the front of the device 300 toward the back of the device 300 ) and covers the side wrap-around portions 15 a, 16 a of the body sides 15 , 16 (see FIG. 7 ) so as to extend at least partially onto the back surface of the device 300 .
  • the soft-touch material also preferably covers the bottom wrap-around portions 15 b, 16 b 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 .
  • the soft-touch material also covers the bottom portion of bottom piece 18 .
  • the soft-touch material renders the device 300 easier to grip and use. Conveniently, the soft-touch material provides improved comfort when holding the device 300 .
  • the International Telecommunications Union has 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 “Arrangement of Digits, Letters, and Symbols on Telephones and Other Devices That Can Be Used for Gaining Access to a Telephone Network.”
  • This standard is also known as ANSI TI.703-1995/1999 and ISO/IEC 9995-8:1994.
  • the numeric key arrangement can be overlaid on a QWERTY arrangement.
  • the numeric arrangement as shown can be aptly described as a top-to-bottom ascending order three-by-three-over-zero pattern.
  • keyboard layouts can be described as having keys disposed on the keyboard in a QWERTY, reduced QWERTY, QWERTZ, Dvorak, or AZERTY key layout.
  • These familiar keyboard layouts allow users to type more intuitively and quickly than, for example, on the standard alphabetic layout on a telephone pad.
  • the key arrangements can be reduced compared to a standard layout through 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.

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  • Engineering & Computer Science (AREA)
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  • Computer Hardware Design (AREA)
  • Physics & Mathematics (AREA)
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US11/738,999 2006-09-25 2007-04-23 Concave handheld mobile device with tactile side grip Abandoned US20080074395A1 (en)

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CA 2603793 CA2603793A1 (en) 2006-09-25 2007-09-25 Concave handheld mobile device with tactile side grip

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US11/738,999 US20080074395A1 (en) 2006-09-25 2007-04-23 Concave handheld mobile device with tactile side grip

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US11/738,999 Abandoned US20080074395A1 (en) 2006-09-25 2007-04-23 Concave handheld mobile device with tactile side grip
US11/738,944 Abandoned US20080074393A1 (en) 2006-09-25 2007-04-23 Navigation keys for a handheld electronic device
US11/738,981 Active 2029-10-25 US9256295B2 (en) 2006-09-25 2007-04-23 Outwardly decreasing height keys for a handheld electronic device keyboard
US11/739,040 Abandoned US20080074392A1 (en) 2006-09-25 2007-04-23 Lightguide subassembly for receiving a trackball navigational tool mountable within a handheld mobile device
US11/861,118 Active 2031-02-22 US8162552B2 (en) 2006-09-25 2007-09-25 Ramped-key keyboard for a handheld mobile communication device
US13/431,219 Active US8449208B2 (en) 2006-09-25 2012-03-27 Ramped-key keyboard for a handheld mobile communication device
US13/865,284 Abandoned US20130230345A1 (en) 2006-09-25 2013-04-18 Ramped-Key Keyboard for a Handheld Mobile Communication Device

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US11/738,944 Abandoned US20080074393A1 (en) 2006-09-25 2007-04-23 Navigation keys for a handheld electronic device
US11/738,981 Active 2029-10-25 US9256295B2 (en) 2006-09-25 2007-04-23 Outwardly decreasing height keys for a handheld electronic device keyboard
US11/739,040 Abandoned US20080074392A1 (en) 2006-09-25 2007-04-23 Lightguide subassembly for receiving a trackball navigational tool mountable within a handheld mobile device
US11/861,118 Active 2031-02-22 US8162552B2 (en) 2006-09-25 2007-09-25 Ramped-key keyboard for a handheld mobile communication device
US13/431,219 Active US8449208B2 (en) 2006-09-25 2012-03-27 Ramped-key keyboard for a handheld mobile communication device
US13/865,284 Abandoned US20130230345A1 (en) 2006-09-25 2013-04-18 Ramped-Key Keyboard for a Handheld Mobile Communication Device

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KR (1) KR101057591B1 (zh)
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