Patent Application
20110083110
The present disclosure relates to portable electronic devices, including but not limited to portable electronic devices having touch-sensitive displays and their control.
Electronic devices, including portable electronic devices, have gained widespread use and may provide a variety of functions including, for example, telephonic, electronic messaging and other personal information manager (PIM) application functions. Portable electronic devices include, for example, several types of mobile stations such as simple cellular telephones, smart telephones, wireless personal digital assistants (PDAs), and laptop computers with wireless 802.11 or Bluetooth capabilities.
Portable electronic devices such as PDAs or smart telephones are generally intended for handheld use and ease of portability. Smaller devices are generally desirable for portability. A touch-sensitive display, also known as a touchscreen display, is particularly useful on handheld devices, which are small and have limited space for user input and output. The information displayed on the touch-sensitive displays may be modified depending on the functions and operations being performed. With continued demand for decreased size of portable electronic devices, touch-sensitive displays continue to decrease in size.
Improvements in devices with touch-sensitive displays are desirable.
The following describes an apparatus for and method of previewing selection options, such as characters or functions, on a touch-sensitive display of a portable electronic device. A variety of different previewing formats are described, including previewing text next to previously entered text. Selection options may be previewed until detection of selection of a selection option.
For simplicity and clarity of illustration, reference numerals may be repeated among the figures to indicate corresponding or analogous elements. Numerous details are set forth to provide an understanding of the embodiments described herein. The embodiments may be practiced without these details. In other instances, well-known methods, procedures, and components have not been described in detail to avoid obscuring the embodiments described. The description is not to be considered as limited to the scope of the embodiments described herein.
The disclosure generally relates to an electronic device, which is a portable electronic device in the embodiments described herein. Examples of portable electronic devices include mobile, or handheld, wireless communication devices such as pagers, cellular phones, cellular smart-phones, wireless organizers, personal digital assistants, wirelessly enabled notebook computers, and so forth. The portable electronic device may also be a portable electronic device without wireless communication capabilities, such as a handheld electronic game device, digital photograph album, digital camera, or other device.
A block diagram of an example of a portable electronic device 100 is shown in
The processor 102 interacts with other components, such as Random Access Memory (RAM) 108, memory 110, a display 112 with a touch-sensitive overlay 114 operably connected to an electronic controller 116 that together comprise a touch-sensitive display 118, one or more actuators 120, one or more force sensors 122, an auxiliary input/output (I/O) subsystem 124, a data port 126, a speaker 128, a microphone 130, short-range communications 132, and other device subsystems 134. User-interaction with a graphical user interface is performed through the touch-sensitive overlay 114. The processor 102 interacts with the touch-sensitive overlay 114 via the electronic controller 116. Information, such as text, characters, symbols, images, icons, and other items that may be displayed or rendered on a portable electronic device, is displayed on the touch-sensitive display 118 via the processor 102. The processor 102 may interact with an accelerometer 136 that may be utilized to detect direction of gravitational forces or gravity-induced reaction forces.
To identify a subscriber for network access, the portable electronic device 100 uses a Subscriber Identity Module or a Removable User Identity Module (SIM/RUIM) card 138 for communication with a network, such as the wireless network 150. Alternatively, user identification information may be programmed into memory 110.
The portable electronic device 100 includes an operating system 146 and software programs or components 148 that are executed by the processor 102 and are typically stored in a persistent, updatable store such as the memory 110. Additional applications or programs may be loaded onto the portable electronic device 100 through the wireless network 150, the auxiliary I/O subsystem 124, the data port 126, the short-range communications subsystem 132, or any other suitable subsystem 134.
A received signal such as a text message, an e-mail message, or web page download is processed by the communication subsystem 104 and input to the processor 102. The processor 102 processes the received signal for output to the display 112 and/or to the auxiliary I/O subsystem 124. A subscriber may generate data items, for example e-mail messages, which may be transmitted over the wireless network 150 through the communication subsystem 104. For voice communications, the overall operation of the portable electronic device 100 is similar. The speaker 128 outputs audible information converted from electrical signals, and the microphone 130 converts audible information into electrical signals for processing.
The touch-sensitive display 118 may be any suitable touch-sensitive display, such as a capacitive, resistive, infrared, surface acoustic wave (SAW) touch-sensitive display, strain gauge, optical imaging, dispersive signal technology, acoustic pulse recognition, and so forth, as known in the art. A capacitive touch-sensitive display includes a capacitive touch-sensitive overlay 114. The overlay 114 may be an assembly of multiple layers in a stack including, for example, a substrate, a ground shield layer, a barrier layer, one or more capacitive touch sensor layers separated by a substrate or other barrier, and a cover. The capacitive touch sensor layers may be any suitable material, such as patterned indium tin oxide (ITO).
One or more touches, also known as touch contacts or touch events, may be detected by the touch-sensitive display 118. The processor 102 may determine attributes of the touch, including a location of a touch. Touch location data may include an area of contact or a single point of contact, such as a point at or near a center of the area of contact. A signal is provided to the controller 116 in response to detection of a touch. A touch may be detected from any suitable object, such as a finger, thumb, appendage, or other items, for example, a stylus, pen, or other pointer, depending on the nature of the touch-sensitive display 118. The controller 116 and/or the processor 102 may detect a touch by any suitable contact member on the touch-sensitive display 118. Multiple simultaneous touches may be detected.
The actuator(s) 120 may be depressed by applying sufficient force to the touch-sensitive display 118 to overcome the actuation force of the actuator 120. The actuator 120 may be actuated by pressing anywhere on the touch-sensitive display 118. The actuator 120 may provide input to the processor 102 when actuated. Actuation of the actuator 120 may result in provision of tactile feedback. Various different types of actuators 120 may be utilized, although only two are described herein. When force is applied, the touch-sensitive display 118 is depressible, pivotable, and/or movable.
A sectional side view of a portable electronic device 100 with a mechanical actuator 120 is shown in
The touch-sensitive display 118 is moveable and depressible with respect to the housing 202. As the touch-sensitive display 118 is moved toward the base 210, the biasing elements 214 are compressed, and when sufficient force is applied, the actuator 120 is depressed or actuated as shown in
A sectional side view of a portable electronic device with piezo actuators is shown in
Contraction of the piezo actuators 120 applies a spring-like force, for example, opposing a force externally applied to the touch-sensitive display 118. The charge may be adjusted by varying the applied voltage or current, thereby controlling the force applied by the piezo disks 402. The charge on the piezo actuator 120 may be removed by a controlled discharge current that causes the piezo disk 402 to expand, releasing the force thereby decreasing the force applied by the piezo disks 402. The charge may advantageously be removed over a relatively short period of time to provide tactile feedback to the user via the touch-sensitive display 118. Absent an external force and absent a charge on the piezo disk 402, the piezo disk may be slightly bent due to a mechanical preload.
When inputting information via the touch-sensitive display 118, the contact member often covers some to all of the selection option, e.g., the character or information being selected. In the case of a virtual or soft key of a keyboard, the character is at least partially covered and the information displayed for a selection button or key, such as a “cancel” button or function key such as an “enter” or “shift” key, is at least partially covered. Thus, the information being entered is typically at least partially covered. Keys or buttons are often closely located and displayed in a small area, and the contact member, such as a finger, is often larger than the displayed area for the character or information displayed for, or associated with, the key or button.
A flowchart illustrating a method of previewing selection options on a touch-sensitive display is shown in
When a hovering touch is detected 504 above a selection option, the selection option is previewed 506 by displaying information associated with the selection option in a preview format. A hovering touch is a touch where contact remains associated with a particular selection option for a predetermined period of time, e.g., 0.25, 0.5 seconds, 0.75 seconds, 1 second, and so forth, without selection of the particular selection option. The hovering time may be an option selected by the user. A range of hovering times may be chosen from effectively 0 seconds, i.e., from detection of a touch, to a longer period such as 1 second or longer. A user may be able to turn on previewing for every touch (e.g., 0 seconds) or turn off previewing completely (e.g., infinite hovering time). A preview format is a format noticeably different than the default format, i.e., the format in which information is normally displayed, e.g., a default or standard format, or the format of entered information. For example, when information is previewed in an information field, a character may be displayed in a ghosted, faded, highlighted, or other manner different than the information previously entered in the information field. The previewed character may be displayed after the last character entered in the information field, i.e., next to the previously entered character. Alternatively, the previewed selection option may be displayed in an information field shaped like a balloon, box, or window in a location that is remote from the location of the touch such that the information is visible. Examples of preview formats are shown in
Optionally, tactile feedback may be provided in conjunction with the preview of the information. For example, a low-amplitude vibration or buzz may be provided at the beginning of a preview or for the duration of the preview. Such tactile feedback may be provided, for example, by the piezoelectric devices described above.
When one of the selection options is selected 508, the selected option is displayed 510 in the default format. When selected, a function associated with the selected option is performed. For example, when the selection option is a key on a keyboard, the character associated with the displayed key is entered in the information field in the default format, e.g., the format in which information was previously entered in the information field. When the selection option is a function key, such as one associated with an alternate keyset such as numbers, symbols, punctuation, shift, shift lock, and so forth, the function is performed, for example, an numerical keyset may be displayed.
Detection of selection may comprise detecting depression of a movable touch-sensitive display 118, such as described above. Alternatively, detection of selection may comprise detecting depression of a physical key or selection of a key displayed on the touch-sensitive display 118. A user may select a soft key after hovering in a location associated with the soft key by simply pressing downward on the touch-sensitive display 118 in the same location as the hovering touch. Detecting the selection may comprise detecting selection in an area other than where the one or more selection options are displayed. For example, a touch of sufficient force to be considered a selection force, e.g., one that actuates the actuator 120, a double tap, or other selection touch in the information field may be detected. A separate area designated for selecting a preview may also be utilized. For example, a small area in one or more corners of the display may be set aside for selection such that one finger may hover while another one selects, thus facilitating faster typing.
A user may hover over several different selection options before selecting one. A preview of each of the different selection options is provided as a hovering touch is detected for each option. A selection option may be selected without first hovering about the selection option.
Preview formatting may comprise one or more of a variety of formats, including fading, ghosting, underscoring, italicizing, bolding, highlighted, blinking, and so forth. Preview formatting may also include a different color or font, as well as different size of the character. Preview formatting may be utilized in conjunction with a cursor. Combinations of formatting may be utilized, such as bold, italics, and underlined, or highlighted with a cursor, and so forth. Various examples are shown in
Preview of a character in a faded format 602 is shown in
Preview of a character 702 with respect to a cursor is illustrated in
A hovering touch detected at a location 606 associated with the displayed “E” key results in an enlarged, i.e., larger size than the normal format, “e” 902 previewed in the information field 604 in
The examples of the preview formats in
In the example of
Preview of a various selection options is shown in
Characters or words may also be inserted in the middle of entered character strings or text. In the examples of
When practicing the teachings of the present disclosure, more accurate typing on a touch-sensitive display results. A user need not spend time deleting incorrect input and replacing such input with a correct entry. Speed and accuracy may be improved. A preview of a selection option may be provided in a variety of different formats. The selection option may be displayed next to the text previously entered, rendering a more visually appealing display of the previewed selection option than more distally located previewing methods. The selection option may be previewed until a selection is detected by the device 100, rather than for a short period of time that may not be sufficient and may need to be repeated.
A method comprises displaying one or more selection options on a touch-sensitive display, detecting a hovering touch associated with a first option of the one or more selection options, and previewing, in a first format in an information field, information associated with the first option in response to detecting the hovering touch. A selection of one of the one or more selection options is detected. A function associated with the selected option is performed. The function may comprise: displaying, in a second format, the information associated with the selected option in response to detecting the selection, wherein the first format is different from the second format or displaying at least one alternate selection option that is different than the one or more selection options.
Detecting the selection may comprise: detecting depression of a movable touch-sensitive display or detecting selection in an area other than where the one or more selection options are displayed. Displaying the one or more selection options may comprise displaying a keyboard comprising a plurality of characters. Displaying in the second format may comprise displaying in a format of information previously entered in the information field. Previewing may comprise: displaying a character in a faded format; displaying a character in a font that is different than the font of the second format; displaying a character in a color that is different than the color of the second format; displaying an underscored, italicized, or bolded character; displaying a blinking or highlighted character; displaying a shaded, shadowed, enlarged, or shrunken version of a character; displaying information associated with the first option in a window, box, or balloon located remotely from the first option when the information comprises two or more characters; displaying a character after a last character entered in the information field; displaying a character in the middle of a character string entered in the information field; and/or displaying a character with a cursor in the information field. A cursor may be moved after the information associated with the first option after detecting the selection and entering the information. A computer-readable medium may have computer-readable code executable by at least one processor of the portable electronic device to perform the method.
Alternatively, the method may comprise displaying a first keyset of a plurality of selectable sets of keys and detecting a hovering touch associated with a first key of the first keyset, wherein the first key is associated with a first character. The first character may be displayed in a first format in an information field in response to detecting the hovering touch. A selection of the first key may be detected, and the first character may be displayed in a second format in response to detecting the selection. The first format is different from the second format.
A portable electronic device comprises a touch-sensitive display that is depressible through movement with respect to a housing of the portable electronic device and at least one processor configured to: display one or more selection options on the touch-sensitive display; detect a hovering touch associated with a first option of the one or more selection options; previewing by displaying, in a first format in an information field, information associated with the first option in response to detecting the hovering touch; detect a selection of the first option; and display, in a second format, the information associated with the first option in response to detecting the selection, wherein the first format is different from the second format.
Alternatively, the method may comprise displaying a first keyset of a plurality of selectable sets of keys on a touch-sensitive display that is movable with respect to a housing of a portable electronic device and detecting a hovering touch associated with a first key of the first keyset, wherein the first key is associated with a first character. In response to detecting the hovering touch, the first character may be displayed in a first format in an information field displayed on the touch-sensitive display, wherein entered characters are displayed in the information field. A selection of the first key may be detected by detecting depression of the touch-sensitive display, and the first character may be displayed in a second format in response to detecting the selection, wherein the first format is different from the second format.
The present disclosure may be embodied in other specific forms without departing from its spirit or essential characteristics. The described embodiments are to be considered in all respects only as illustrative and not restrictive. The scope of the disclosure is, therefore, indicated by the appended claims rather than by the foregoing description. All changes that come within the meaning and range of equivalency of the claims are to be embraced within their scope.
