WO2014094283A1 - Touchscreen including force sensors - Google Patents

Touchscreen including force sensors Download PDF

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Publication number
WO2014094283A1
WO2014094283A1 PCT/CN2012/087073 CN2012087073W WO2014094283A1 WO 2014094283 A1 WO2014094283 A1 WO 2014094283A1 CN 2012087073 W CN2012087073 W CN 2012087073W WO 2014094283 A1 WO2014094283 A1 WO 2014094283A1
Authority
WO
WIPO (PCT)
Prior art keywords
touchscreen
force
computing device
force sensors
logic
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/CN2012/087073
Other languages
French (fr)
Inventor
Jiancheng Johnson TAO
Hong W. Wong
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Intel Corp
Original Assignee
Intel Corp
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Intel Corp filed Critical Intel Corp
Priority to DE112012006009.1T priority Critical patent/DE112012006009T5/en
Priority to US13/976,797 priority patent/US9600116B2/en
Priority to CN201280071953.6A priority patent/CN104380231B/en
Priority to PCT/CN2012/087073 priority patent/WO2014094283A1/en
Publication of WO2014094283A1 publication Critical patent/WO2014094283A1/en
Anticipated expiration legal-status Critical
Priority to US15/423,790 priority patent/US20170242519A1/en
Priority to US16/035,541 priority patent/US20190050101A1/en
Ceased legal-status Critical Current

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Classifications

    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0414—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position
    • G06F3/04142—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means using force sensing means to determine a position the force sensing means being located peripherally, e.g. disposed at the corners or at the side of a touch sensing plate
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/0416—Control or interface arrangements specially adapted for digitisers
    • G06F3/04166—Details of scanning methods, e.g. sampling time, grouping of sub areas or time sharing with display driving
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; 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
    • G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
    • G06F3/044—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means by capacitive means
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04105—Pressure sensors for measuring the pressure or force exerted on the touch surface without providing the touch position
    • G—PHYSICS
    • G06—COMPUTING OR CALCULATING; COUNTING
    • G06F—ELECTRIC DIGITAL DATA PROCESSING
    • G06F2203/00—Indexing scheme relating to G06F3/00 - G06F3/048
    • G06F2203/041—Indexing scheme relating to G06F3/041 - G06F3/045
    • G06F2203/04106—Multi-sensing digitiser, i.e. digitiser using at least two different sensing technologies simultaneously or alternatively, e.g. for detecting pen and finger, for saving power or for improving position detection

Definitions

  • One or more embodiments relategenerally to a touchscreen ofa computing device. More specifically, one or more embodiments relate toa touchscreen having one or more force sensors for controlling various functions of the touchscreen.
  • touch sensors within a touchscreen of a computing device continuously monitor the touchscreen to determine whether an object, such as a finger of a user, has come in contact with the touchscreen.
  • a capacitive touch sensor continuously monitors the touchscreen to determine any changes in capacitance that may be induced by contact with an object.
  • using such touch sensors to continuously monitor the touchscreen of a computing device results in the consumption of a large amount of power.
  • FIG. 1 is a block diagram of a computing device that may be used in accordance with embodiments
  • FIG. 2 is a schematic of a touchscreen including a number of force sensors, in accordance with embodiments
  • FIG. 3 is a process flow diagram showing a method for controlling the functioning of a touchscreen using a number of force sensors, in
  • FIG. 4 is a block diagram showing tangible, non-transitory computer-readable media that store code for controlling the functioning of a touchscreen using a number of force sensors, in accordance with embodiments.
  • embodiments described herein provide a touchscreen that is monitored and controlled using a number of force sensors within the touchscreen.
  • the use of such force sensors may result in a reduction of the power consumption of the computing device because force sensors typically consume less power than capacitive touch sensors and other types of touch sensors that are used according to current technologies.
  • the use of such force sensors may reduce the idle power consumption of the computing device by allowing the capacitive touch sensors or other touch sensors to be disabled or in low power mode while the computing device is in an idle mode.
  • Coupled may mean that two or more elements are in direct physical or electrical contact. However, “coupled” may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other.
  • Some embodiments may be implemented in one or a combination of hardware, firmware, and software. Some embodiments may also be implemented as instructions stored on a machine-readable medium, which may be read and executed by a computing platform to perform the operations described herein.
  • a machine-readable medium may include any mechanism for storing or transmitting information in a form readable by a machine, e.g., a computer.
  • a machine-readable medium may include read only memory (ROM); random access memory (RAM); magnetic disk storage media; optical storage media; flash memory devices; or electrical, optical, acoustical or other form of propagated signals, e.g., carrier waves, infrared signals, digital signals, or the interfaces that transmit and/or receive signals, among others.
  • logic encompasses any functionality for performing a task.
  • each operation illustrated in the flowcharts corresponds to logic for performing that operation.
  • An operation can be performed using, for instance, software, hardware, firmware, or any combination thereof.
  • An embodiment is an implementation or example. Reference in the specification to "an embodiment,” “one embodiment,” “some
  • the elements in some cases may each have a same reference number or a different reference number to suggest that the elements represented could be different and/or similar.
  • an element may be flexible enough to have different
  • Fig. 1 is a block diagram of a computing device 100 that may be used in accordance with embodiments.
  • the computing device 100 may be a mobile computing device that includes a touchscreen 102, such as a mobile phone, for example.
  • the computing device 100 may also be any other suitable type of computing device that includes a touchscreen 102, such as an all-in- one computing system, laptop computer, desktop computer, tablet computer, or server, among others.
  • the computing device 100 may include a central processing unit (CPU) 104 that is configured to execute stored instructions, as well as a memory device 106 that stores instructions that are executable by the CPU 104.
  • the CPU 104 may be coupled to the memory device 106 via a bus 108.
  • the CPU 104 can be a single core processor, a multi- core processor, a computing cluster, or any number of other configurations.
  • the computing device 100 may include more than one CPU 104. The instructions that are executed by the CPU 104 may be used to direct the functioning of the touchscreen 102 of the computing device 100.
  • the memory device 106 can include random access memory (RAM), read only memory (ROM), flash memory, or any other suitable RAM, random access memory (RAM), read only memory (ROM), flash memory, or any other suitable RAM, random access memory (RAM), read only memory (ROM), flash memory, or any other suitable
  • the memory device 106 may include dynamic random access memory (DRAM).
  • DRAM dynamic random access memory
  • the CPU 104 may be connected through the bus 108 to ahuman- machine interface (HMI) 1 10 configured to connect the computing device 100 to the touchscreen 102.
  • HMI human- machine interface
  • the touchscreen 102 includes a number of force sensors 1 12.
  • the touchscreen 102 includes four force sensors 1 12, wherein one force sensor 1 12 is positioned at each corner of the touchscreen 102.
  • Various functions of the touchscreen 102 may be controlled based on feedback from the force sensors 1 12.
  • the computing device 100 may also include a network interface controller (NIC) 1 14.
  • NIC network interface controller
  • the NIC 1 14 may be configured to connect the
  • the computing device 100 through the bus 108 to a network 1 16.
  • the network 1 16 may be a wide area network (WAN), local area network (LAN), or the Internet, among others.
  • the computing device 100 may also include a storage device 1 18.
  • the storage device 1 18 may be a physical memory such as a hard drive, an optical drive, a thumbdrive, an array of drives, or any combinations
  • the storage device 1 18 may also include remote storage drives.
  • the CPU 104 may be connected through the bus 108 to a touchscreen controller 120.
  • the touch controller 120 resides within, or is coupled to, the HMI 1 10.
  • the touchscreen controller 120 may be configured to control the force sensors 1 12 and any other
  • the CPU 104 may wake up the touchscreen controller 120 and allow the touchscreen 102 to be active and capture user input on the touchscreen 102.
  • This external event can also be triggered by the force sensors 1 12.
  • the touchscreen controller 120 may also be in an active state and may consume a large amount of power.
  • the timer of the computing device 100 can be set such that, when no input is detected within a set interval, such as 0.5 second, the touchscreencontroller 120 will go into a low power state, or power conservation mode. The computing device 100 may still be in an active state.
  • the force sensorsl 12 When the force sensorsl 12 detect user input, theymay activate the touchscreen controller 120 and allow the touchscreen controller 120 to handle the user input via the touchscreen 102.
  • the force sensors 1 12 allow the touchscreen controller 120 to cycle between active and lower power state and reduce the overall power consumption of the touchscreen controller 120.
  • FIG. 1 The block diagram of Fig. 1 is not intended to indicate that the computing device 100 is to, include all of the components shown in Fig. 1 . Further, the computing device 100 may include any number of additional components not shown in Fig. 1 , depending on the details of the specific implementation.
  • FIG. 2 is a schematic of a touchscreen 200 including a number of force sensors 202A-D, in accordance with embodiments.
  • a touchscreen 200 including a number of force sensors 202A-D, in accordance with embodiments.
  • the touchscreen 200 is a capacitive touchscreen, such as a surface capacitive touchscreen, a projected mutual capacitive touchscreen, or a projected self-capacitive touchscreen.
  • the touchscreen 200 may also be any other suitable type of touchscreen.
  • the touchscreen 200 is implemented with a mobile computing device, such as a mobile phone, or an all-in-one computing system.
  • a mobile computing device such as a mobile phone, or an all-in-one computing system.
  • the touchscreen 200 may also be implemented within any other suitable type of computing device.
  • a first force sensor 202A i.e., "F1 ,” may be positioned at a first corner 204A of the touchscreen 200.
  • a second force sensor 202B i.e., "F2”
  • a third force sensor 202C i.e., "F3”
  • a fourth force sensor 202D i.e., "F4”
  • F4 fourth corner 204D of the touchscreen 200.
  • a force is applied to a point 206 on the touchscreen 200.
  • a finger 208 of a user of the computing device may press on the touchscreen 200 at a specific point 206.
  • the computing device may then determine the position of the point 206 at which the force was applied to the touchscreen 200.
  • the force sensed by each force sensor 202A-D is different. Specifically, the amount of force sensed by each force sensor 202A-D depends on the amount of force applied to the touchscreen 200 and the position of the point 206 at which the force was applied. Thus, the differences between the amount of force sensed by each force sensor 202A-D, indicated in Fig. 2 by arrows 210A-D, respectively, may be used to determine the position of the point 206 at which the force was applied.
  • the computing device may determine whether the force applied to the touchscreen 200 exceeds a specified threshold.
  • the specified threshold may be determined by a user or developer of the computing device, for example. If the force does not exceed the threshold, then the application of the force may be considered to be unintentional and may be ignored. For example, if the touchscreen 200 comes into contact with another item within a user's pocket or purse, the computing device may determine that the application of the force was
  • the touchscreen 200 is activated from a deactivated state if the force applied to the touchscreen 200 exceeds the threshold.
  • the touchscreen 200 may be activated in response to the application of a continuous force that exceeds the threshold.
  • the continuous force may include a sliding action along a particular region of the touchscreen 200, for example.
  • touchscreen 200 is to include all of the components shown in Fig. 2. Further, the touchscreen 200 may include any number of additional components not shown in Fig. 2, depending on the details of the specific implementation.
  • Fig. 3 is a process flow diagram showing a method 300 for controlling the functioning of a touchscreen using a number of force sensors, in accordance with embodiments.
  • the method 300 is implemented by a computing device, such as the computing device 100 discussed with respect to Fig. 1 .
  • the computing device that implements the method 300 includes a touchscreen having one or more force sensors, such as the touchscreen 200 discussed with respect to Fig. 2.
  • a force sensor is positioned at each corner of the touchscreen.
  • a single force sensor is positioned at the center of the touchscreen.
  • the method begins at block 302, at which a force applied to a touchscreen of a computing device is detected via a number of force sensors within the touchscreen.
  • the force may be applied by a finger of the user or a stylus, for example.
  • the amount of force sensed by each force sensor varies depending on the position on the touchscreen at which the force is applied.
  • the force applied to the touchscreen exceeds a threshold.
  • the threshold may be specified by the user or developer of the computing device, for example.
  • controlling the functioning of the touchscreen includes activating the touchscreen from a deactivated or low power mode if the applied force exceeds the threshold.
  • the touchscreen may be activated if the applied force includes a continuous force applied to the touchscreen in a specified position.
  • the position of the applied force may be calculated based on differences between the forcessensed by each force sensor.
  • the orientation of the touchscreen may then be controlled based on the position of the applied force.
  • the touchscreen includes capacitive sensing capabilities. Prior to detection of the applied force, the force sensors may be enabled, and the capacitive sensing capabilities may be disabled or in the lower power mode. The capacitive sensing capabilities may only be enabled or switch to active mode if the applied force exceeds the threshold. By allowing the capacitive sensing capabilities of the touchscreen to be disabled or in low power mode until an applied force that exceeds the threshold is detected, the method 300 provides for a reduction in the power consumption of the computing device. [0036] The process flow diagram of Fig. 3isnot intended to indicate that the blocks of method300 are to be executed in any particular order, or that all of the blocks are to be included in every case. Further, any number of additional blocks may be included within the method300, depending on the details of the specific implementation. For example, in various embodiments, the computing device may be used as a digital weight scale device.
  • the weight of an object positioned on the touchscreen may be detected via the force sensors.
  • FIG. 4 is a block diagram showing tangible, non-transitory
  • computer-readable media 400 that store code for controlling the functioning of a touchscreen using a number of force sensors, in accordance with
  • the tangible, non-transitory computer-readable media 400 may be accessed by a processor 402 over a computer bus 404. Furthermore, the tangible, non-transitory computer-readable media400 may include code configured to direct the processor 402 to perform the techniques described herein.
  • a touchscreen force detectionmodule 406 may be configured to detect a force applied to a touchscreen via one or more sensors.
  • the touchscreen force detection module 406 may also be configured to determine whether the applied force exceeds a threshold, as well as the point on the touchscreen at which the force was applied, for example.
  • a touchscreen control module 408 may be configured to control the functioning of the touchscreen in response to the applied force detected by the touchscreen force detection module 406. In some embodiments, the touchscreen control module 408 controls the
  • FIG. 4 The block diagram of Fig. 4 is not intended to indicate that the tangible, non-transitory computer-readable media 400are to include all of the components shown in Fig. 4. Further, the tangible, non-transitory computer- readable media 400 may include any number of additional components not shown in Fig. 4, depending on the details of the specific implementation.
  • a computing device includes a touchscreen having one or more force sensors.
  • the computing device also includes first logic to detect a force applied to the touchscreen via the one or more force sensors and second logic to control a functioning of the touchscreen in response to the applied force.
  • the second logic is to determine whether the applied force exceeds a threshold and control the functioning of the touchscreen if the applied force exceeds the threshold. In some embodiments, the second logic is to activate the touchscreen from a deactivated mode in response to the applied force. Further, in some embodiments, the second logic is to activate the touchscreen from the deactivated mode if the applied force includes a continuous force applied to the touchscreen in a specified position.
  • the one or more force sensors include a number of force sensors
  • the second logic is to control the functioning of the touchscreen based on differences between an amount of force sensed by each force sensor.
  • the number of force sensors may include a force sensor positioned at each corner of the touchscreen.
  • the computing device may also include logic to identify a position of the applied force andcontrol an orientation of the touchscreen based on the position of the applied force.
  • the one or more force sensors include a number of force sensors, and the position of the applied force is identified based on differences between an amount of force sensed by each force sensor.
  • the touchscreen includes a capacitive sensing capability
  • the second logic is to control the functioning of the touchscreen by enabling the capacitive sensing capability of the touchscreen in response to the applied force.
  • the computing device includes logic to detect a weight of an object positioned on the touchscreen using the one or more force sensors.
  • the computing device may include a mobile phone.
  • the computing device includes a touchscreen controllerto implement the first logic and the second logic.
  • the computing device includes a processor to implement the first logic and the second logic.
  • a computing device includes a touchscreen having one or more force sensors and a processor that is configured to execute stored instructions.
  • the computing device also includes a storage device to stores instructions.
  • the storage device includes processor executable code that, when executed by the processor, is
  • the processor executable code is configured to determine whether the applied force exceeds a threshold and control the functioning of the touchscreen if the applied force exceeds the threshold.
  • the computing device includes a mobile phone.
  • the processor executable code is
  • the one or more force sensors include a number of force sensors, and the processor
  • executable code is configured to identify a position of the applied force based on differences between an amount of force sensed by each force sensor andcontrol an orientation of the touchscreen based on the position of the applied force.
  • At least one machine readable medium includes instructions stored therein that, in response to being executed on a computing device, cause the computing device to detect a force applied to a touchscreen of the computing device via one or more force sensors for the touchscreen and control a functioning of the touchscreen in response to the applied force.
  • the instructions cause the computing device to determine whether the applied force exceeds a threshold and control the functioning of the touchscreen if the applied force exceeds the threshold. In addition, in some embodiments, the instructions cause the computing device to activate the touchscreen from a deactivated mode in response to the applied force.
  • the one or more force sensors include a number of force sensors, and the instructions cause the computing device to detect a position of the applied force based on differences between an amount of force sensed by each force sensor andcontrol an orientation of the touchscreen based on the position of the applied force.
  • a force sensor is positioned at each corner of the touchscreen.
  • the touchscreen includes a capacitive sensing capability.
  • the one or more force sensors may be enabled and the capacitive sensing capability of the touchscreen may be disabled prior to detection of the applied force.
  • the instructions may cause the computing device to enable the capacitive sensing capability of the touchscreen in response to the applied force. Further, in some embodiments, the instructions cause the computing device to detect a weight of an object positioned on the touchscreen using the one or more force sensors.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Theoretical Computer Science (AREA)
  • Human Computer Interaction (AREA)
  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • User Interface Of Digital Computer (AREA)
  • Telephone Function (AREA)

Abstract

Computing devices and at least one machine readable medium for controlling the functioning of a touch screen are described herein. The computing device includes a touchscreen having one or more force sensors. The computing device also includes first logic to detect a force applied to the touchscreen via the one or more force sensors and second logic to control a functioning of the touchscreen in response to the applied force.

Description

TOUCHSCREEN INCLUDING FORCE SENSORS
Technical Field
[0001] One or more embodiments relategenerally to a touchscreen ofa computing device. More specifically, one or more embodiments relate toa touchscreen having one or more force sensors for controlling various functions of the touchscreen.
Background Art
[0002] According to current technologies, touch sensors within a touchscreen of a computing device continuously monitor the touchscreen to determine whether an object, such as a finger of a user, has come in contact with the touchscreen. For example, in the case of capacitive touchscreens, a capacitive touch sensor continuously monitors the touchscreen to determine any changes in capacitance that may be induced by contact with an object. However, using such touch sensors to continuously monitor the touchscreen of a computing device results in the consumption of a large amount of power.
Brief Description of the Drawings
[0003] Fig. 1 is a block diagram of a computing device that may be used in accordance with embodiments;
[0004] Fig. 2 is a schematic of a touchscreen including a number of force sensors, in accordance with embodiments;
[0005] Fig. 3 is a process flow diagram showing a method for controlling the functioning of a touchscreen using a number of force sensors, in
accordance with embodiments; and
[0006] Fig. 4 is a block diagram showing tangible, non-transitory computer-readable media that store code for controlling the functioning of a touchscreen using a number of force sensors, in accordance with embodiments.
[0007] The same numbers are used throughout the disclosure and the figures to reference like components and features. Numbers in the 100 series refer to features originally found in Fig. 1 ; numbers in the 200 series refer to features originally found in Fig. 2; and so on.
Description of the Embodiments
[0008] As discussed above, using touch sensors such as capacitive touch sensors to continuously monitor the touchscreen of a computing device results in the consumption of a large amount of power. Therefore,
embodiments described herein provide a touchscreen that is monitored and controlled using a number of force sensors within the touchscreen. The use of such force sensors may result in a reduction of the power consumption of the computing device because force sensors typically consume less power than capacitive touch sensors and other types of touch sensors that are used according to current technologies. In particular, the use of such force sensors may reduce the idle power consumption of the computing device by allowing the capacitive touch sensors or other touch sensors to be disabled or in low power mode while the computing device is in an idle mode.
[0009] In the following description and claims, the terms "coupled" and "connected," along with their derivatives, may be used. It should be
understood that these terms are not intended as synonyms for each other. Rather, in particular embodiments, "connected" may be used to indicate that two or more elements are in direct physical or electrical contact with each other. "Coupled" may mean that two or more elements are in direct physical or electrical contact. However, "coupled" may also mean that two or more elements are not in direct contact with each other, but yet still co-operate or interact with each other. [0010] Some embodiments may be implemented in one or a combination of hardware, firmware, and software. Some embodiments may also be implemented as instructions stored on a machine-readable medium, which may be read and executed by a computing platform to perform the operations described herein. A machine-readable medium may include any mechanism for storing or transmitting information in a form readable by a machine, e.g., a computer. For example, a machine-readable medium may include read only memory (ROM); random access memory (RAM); magnetic disk storage media; optical storage media; flash memory devices; or electrical, optical, acoustical or other form of propagated signals, e.g., carrier waves, infrared signals, digital signals, or the interfaces that transmit and/or receive signals, among others.
[0011] As used herein, the term "logic" encompasses any functionality for performing a task. For instance, each operation illustrated in the flowcharts corresponds to logic for performing that operation. An operation can be performed using, for instance, software, hardware, firmware, or any
combinations thereof.
[0012] An embodiment is an implementation or example. Reference in the specification to "an embodiment," "one embodiment," "some
embodiments," "various embodiments," or "other embodiments" means that a particular feature, structure, or characteristic described in connection with the embodiments is included in at least some embodiments, but not necessarily all embodiments. The various appearances of "an embodiment," "one embodiment," or "some embodiments" are not necessarily all referring to the same embodiments. Elements or aspects from an embodiment can be combined with elements or aspects of another embodiment.
[0013] Not all components, features, structures, characteristics, etc.
described and illustrated herein need be included in a particular embodiment or embodiments. If the specification states a component, feature, structure, or characteristic "may", "might", "can" or "could" be included, for example, that particular component, feature, structure, or characteristic is not required to be included. If the specification or claim refers to "a" or "an" element, that does not mean there is only one of the element. If the specification or claims refer to "an additional" element, that does not preclude there being more than one of the additional element.
[0014] It is to be noted that, although some embodiments have been described in reference to particular implementations, other implementations are possible according to some embodiments. Additionally, the arrangement and/or order of circuit elements or other features illustrated in the drawings and/or described herein need not be arranged in the particular way illustrated and described. Many other arrangements are possible according to some embodiments.
[0015] In each system shown in a figure, the elements in some cases may each have a same reference number or a different reference number to suggest that the elements represented could be different and/or similar.
However, an element may be flexible enough to have different
implementations and work with some or all of the systems shown or described herein. The various elements shown in the figures may be the same or different. Which one is referred to as a first element and which is called a second element is arbitrary.
[0016] Fig. 1 is a block diagram of a computing device 100 that may be used in accordance with embodiments. The computing device 100 may be a mobile computing device that includes a touchscreen 102, such as a mobile phone, for example. The computing device 100 may also be any other suitable type of computing device that includes a touchscreen 102, such as an all-in- one computing system, laptop computer, desktop computer, tablet computer, or server, among others. The computing device 100 may include a central processing unit (CPU) 104 that is configured to execute stored instructions, as well as a memory device 106 that stores instructions that are executable by the CPU 104. The CPU 104 may be coupled to the memory device 106 via a bus 108. Additionally, the CPU 104 can be a single core processor, a multi- core processor, a computing cluster, or any number of other configurations. Furthermore, the computing device 100 may include more than one CPU 104. The instructions that are executed by the CPU 104 may be used to direct the functioning of the touchscreen 102 of the computing device 100.
[0017] The memory device 106can include random access memory (RAM), read only memory (ROM), flash memory, or any other suitable
memory systems. For example, the memory device 106may include dynamic random access memory (DRAM).
[0018] The CPU 104 may be connected through the bus 108 to ahuman- machine interface (HMI) 1 10 configured to connect the computing device 100 to the touchscreen 102. According to embodiments described herein, the touchscreen 102 includes a number of force sensors 1 12. For example, in various embodiments, the touchscreen 102 includes four force sensors 1 12, wherein one force sensor 1 12 is positioned at each corner of the touchscreen 102. Various functions of the touchscreen 102 may be controlled based on feedback from the force sensors 1 12.
[0019] The computing device 100 may also include a network interface controller (NIC) 1 14. The NIC 1 14 may be configured to connect the
computing device 100 through the bus 108 to a network 1 16. The network 1 16 may be a wide area network (WAN), local area network (LAN), or the Internet, among others.
[0020] The computing device 100 may also include a storage device 1 18. The storage device 1 18 may be a physical memory such as a hard drive, an optical drive, a thumbdrive, an array of drives, or any combinations
thereof The storage device 1 18 may also include remote storage drives. [0021] The CPU 104 may be connected through the bus 108 to a touchscreen controller 120. In some embodiments, the touch controller 120 resides within, or is coupled to, the HMI 1 10. The touchscreen controller 120 may be configured to control the force sensors 1 12 and any other
sensorswithin the touchscreen 102. In response to an external event, such as the computing device 100 transitioning from a sleep mode, idle mode, or standby mode to an active mode, the CPU 104 may wake up the touchscreen controller 120 and allow the touchscreen 102 to be active and capture user input on the touchscreen 102. This external event can also be triggered by the force sensors 1 12. For example, when the computing device 100 is in an active state, the touchscreen controller 120 may also be in an active state and may consume a large amount of power. The timer of the computing device 100 can be set such that, when no input is detected within a set interval, such as 0.5 second, the touchscreencontroller 120 will go into a low power state, or power conservation mode. The computing device 100 may still be in an active state. When the force sensorsl 12 detect user input, theymay activate the touchscreen controller 120 and allow the touchscreen controller 120 to handle the user input via the touchscreen 102. The force sensors 1 12 allow the touchscreen controller 120 to cycle between active and lower power state and reduce the overall power consumption of the touchscreen controller 120.
[0022] The block diagram of Fig. 1 is not intended to indicate that the computing device 100 is to, include all of the components shown in Fig. 1 . Further, the computing device 100 may include any number of additional components not shown in Fig. 1 , depending on the details of the specific implementation.
[0023] Fig. 2 is a schematic of a touchscreen 200 including a number of force sensors 202A-D, in accordance with embodiments. In various
embodiments, the touchscreen 200 is a capacitive touchscreen, such as a surface capacitive touchscreen, a projected mutual capacitive touchscreen, or a projected self-capacitive touchscreen. However, the touchscreen 200 may also be any other suitable type of touchscreen. Further, in various
embodiments, the touchscreen 200 is implemented with a mobile computing device, such as a mobile phone, or an all-in-one computing system. However, the touchscreen 200 may also be implemented within any other suitable type of computing device.
[0024] A first force sensor 202A, i.e., "F1 ," may be positioned at a first corner 204A of the touchscreen 200. A second force sensor 202B, i.e., "F2," may be positioned at a second corner 204B of the touchscreen 200. A third force sensor 202C, i.e., "F3," may be positioned at a third corner 204C of the touchscreen 200. In addition, a fourth force sensor 202D, i.e., "F4," may be positioned at a fourth corner 204D of the touchscreen 200.
[0025] According to embodiments described herein, a force is applied to a point 206 on the touchscreen 200. For example, as shown in Fig. 2, a finger 208 of a user of the computing device may press on the touchscreen 200 at a specific point 206. The computing device may then determine the position of the point 206 at which the force was applied to the touchscreen 200.
[0026] In various embodiments, the force sensed by each force sensor 202A-D is different. Specifically, the amount of force sensed by each force sensor 202A-D depends on the amount of force applied to the touchscreen 200 and the position of the point 206 at which the force was applied. Thus, the differences between the amount of force sensed by each force sensor 202A-D, indicated in Fig. 2 by arrows 210A-D, respectively, may be used to determine the position of the point 206 at which the force was applied.
[0027] In addition, in various embodiments, it may be determined whether the force applied to the touchscreen 200 exceeds a specified threshold. The specified threshold may be determined by a user or developer of the computing device, for example. If the force does not exceed the threshold, then the application of the force may be considered to be unintentional and may be ignored. For example, if the touchscreen 200 comes into contact with another item within a user's pocket or purse, the computing device may determine that the application of the force was
unintentional and, thus, may not alter the state of the touchscreen 200 in response to the application of the force.
[0028] If it is determined that the force applied to the touchscreen 200 exceeds the threshold, the functioning of the touchscreen 200 may be
controlled based on the application of the force. In some embodiments, the orientation of the computing device is controlled based on the position of the point 206 at which the force was applied to the touchscreen 200. In addition, in some embodiments, the touchscreen 200 is activated from a deactivated state if the force applied to the touchscreen 200 exceeds the threshold. For example, the touchscreen 200 may be activated in response to the application of a continuous force that exceeds the threshold. In some cases, if the touchscreen 200 includes a lock function, the continuous force may include a sliding action along a particular region of the touchscreen 200, for example.
[0029] Theschematic of Fig. 2 is not intended to indicate that the
touchscreen 200 is to include all of the components shown in Fig. 2. Further, the touchscreen 200 may include any number of additional components not shown in Fig. 2, depending on the details of the specific implementation.
[0030] Fig. 3 is a process flow diagram showing a method 300 for controlling the functioning of a touchscreen using a number of force sensors, in accordance with embodiments. The method 300 is implemented by a computing device, such as the computing device 100 discussed with respect to Fig. 1 . The computing device that implements the method 300 includes a touchscreen having one or more force sensors, such as the touchscreen 200 discussed with respect to Fig. 2. For example, in some embodiments, a force sensor is positioned at each corner of the touchscreen. In other embodiments, a single force sensor is positioned at the center of the touchscreen. [0031] The method begins at block 302, at which a force applied to a touchscreen of a computing device is detected via a number of force sensors within the touchscreen.The force may be applied by a finger of the user or a stylus, for example. In various embodiments, the amount of force sensed by each force sensor varies depending on the position on the touchscreen at which the force is applied.
[0032] At block 304, it is determined whether the force applied to the touchscreen exceeds a threshold. The threshold may be specified by the user or developer of the computing device, for example.
[0033] At block 306, if the applied force exceeds the threshold, the functioning of the touchscreen is controlled based on the applied force. In some embodiments, controlling the functioning of the touchscreen includes activating the touchscreen from a deactivated or low power mode if the applied force exceeds the threshold. In some cases, the touchscreen may be activated if the applied force includes a continuous force applied to the touchscreen in a specified position.
[0034] Furthermore, the position of the applied force may be calculated based on differences between the forcessensed by each force sensor. The orientation of the touchscreen may then be controlled based on the position of the applied force.
[0035] In various embodiments, the touchscreen includes capacitive sensing capabilities. Prior to detection of the applied force, the force sensors may be enabled, and the capacitive sensing capabilities may be disabled or in the lower power mode.The capacitive sensing capabilities may only be enabled or switch to active mode if the applied force exceeds the threshold. By allowing the capacitive sensing capabilities of the touchscreen to be disabled or in low power mode until an applied force that exceeds the threshold is detected, the method 300 provides for a reduction in the power consumption of the computing device. [0036] The process flow diagram of Fig. 3isnot intended to indicate that the blocks of method300 are to be executed in any particular order, or that all of the blocks are to be included in every case. Further, any number of additional blocks may be included within the method300, depending on the details of the specific implementation. For example, in various embodiments, the computing device may be used as a digital weight scale device.
Specifically, the weight of an object positioned on the touchscreen may be detected via the force sensors.
[0037] It is to be understood that, although embodiments are described herein with respect to the use of a capacitive touchscreen, such embodiments may also be applied to any other suitable types of touchscreens. For example, touchscreens that operate according to technologies such as ultrasound, infrared, optic capture-camera, optical light scattering, or diffraction
technologies, among others, may be used according to embodiments
described herein.
[0038] Fig. 4 is a block diagram showing tangible, non-transitory
computer-readable media 400 that store code for controlling the functioning of a touchscreen using a number of force sensors, in accordance with
embodiments. The tangible, non-transitory computer-readable media 400may be accessed by a processor 402 over a computer bus 404. Furthermore, the tangible, non-transitory computer-readable media400 may include code configured to direct the processor 402 to perform the techniques described herein.
[0039] The various software components discussed herein may be stored on the tangible, non-transitory computer-readable media 400, as indicated in Fig. 4. For example, a touchscreen force detectionmodule 406 may be configured to detect a force applied to a touchscreen via one or more sensors. In some embodiments, the touchscreen force detection module 406 may also be configured to determine whether the applied force exceeds a threshold, as well as the point on the touchscreen at which the force was applied, for example. In addition, a touchscreen control module 408 may be configured to control the functioning of the touchscreen in response to the applied force detected by the touchscreen force detection module 406. In some embodiments, the touchscreen control module 408 controls the
touchscreen based on whether the applied force exceeds the threshold and/or the point on the touchscreen at which the force was applied.
[0040] The block diagram of Fig. 4 is not intended to indicate that the tangible, non-transitory computer-readable media 400are to include all of the components shown in Fig. 4. Further, the tangible, non-transitory computer- readable media 400 may include any number of additional components not shown in Fig. 4, depending on the details of the specific implementation.
EXAMPLE 1
[0041] A computing device is described herein. The computing device includes a touchscreen having one or more force sensors. The computing device also includes first logic to detect a force applied to the touchscreen via the one or more force sensors and second logic to control a functioning of the touchscreen in response to the applied force.
[0042] In some embodiments, the second logic is to determine whether the applied force exceeds a threshold and control the functioning of the touchscreen if the applied force exceeds the threshold. In some embodiments, the second logic is to activate the touchscreen from a deactivated mode in response to the applied force. Further, in some embodiments, the second logic is to activate the touchscreen from the deactivated mode if the applied force includes a continuous force applied to the touchscreen in a specified position.
[0043] In various embodiments, the one or more force sensors include a number of force sensors, and the second logic is to control the functioning of the touchscreen based on differences between an amount of force sensed by each force sensor. The number of force sensors may include a force sensor positioned at each corner of the touchscreen.
[0044] The computing device may also include logic to identify a position of the applied force andcontrol an orientation of the touchscreen based on the position of the applied force. In some embodiments, the one or more force sensors include a number of force sensors, and the position of the applied force is identified based on differences between an amount of force sensed by each force sensor.
[0045] In some embodiments, the touchscreen includes a capacitive sensing capability, and the second logic is to control the functioning of the touchscreen by enabling the capacitive sensing capability of the touchscreen in response to the applied force. Further, in some embodiments, the computing device includes logic to detect a weight of an object positioned on the touchscreen using the one or more force sensors.
[0046] The computing device may include a mobile phone. In some embodiments, the computing device includes a touchscreen controllerto implement the first logic and the second logic. In other embodiments, the computing device includes a processor to implement the first logic and the second logic.
EXAMPLE 2
[0047] A computing device is described herein. The computing device includes a touchscreen having one or more force sensors and a processor that is configured to execute stored instructions. The computing device also includes a storage device to stores instructions. The storage device includes processor executable code that, when executed by the processor, is
configured to detect a force applied to the touchscreen via the one or more force sensors and control a functioning of the touchscreen in response to the applied force. [0048] In some embodiments, the processor executable code is configured to determine whether the applied force exceeds a threshold and control the functioning of the touchscreen if the applied force exceeds the threshold. In addition, in some embodiments, the computing device includes a mobile phone.
[0049] In some embodiments, the processor executable code is
configured to activate the touchscreen from a deactivated mode in response to the applied force. Furthermore, in some embodiments, the one or more force sensors include a number of force sensors, and the processor
executable code is configured to identify a position of the applied force based on differences between an amount of force sensed by each force sensor andcontrol an orientation of the touchscreen based on the position of the applied force.
EXAMPLE 3
[0050] At least one machine readable medium is described herein. The at least one machine readable medium includes instructions stored therein that, in response to being executed on a computing device, cause the computing device to detect a force applied to a touchscreen of the computing device via one or more force sensors for the touchscreen and control a functioning of the touchscreen in response to the applied force.
[0051] In some embodiments, the instructions cause the computing device to determine whether the applied force exceeds a threshold and control the functioning of the touchscreen if the applied force exceeds the threshold. In addition, in some embodiments, the instructions cause the computing device to activate the touchscreen from a deactivated mode in response to the applied force.
[0052] In some embodiments, the one or more force sensors include a number of force sensors, and the instructions cause the computing device to detect a position of the applied force based on differences between an amount of force sensed by each force sensor andcontrol an orientation of the touchscreen based on the position of the applied force. In some embodiments, a force sensor is positioned at each corner of the touchscreen.
[0053] In some embodiments, the touchscreen includes a capacitive sensing capability. The one or more force sensors may be enabled and the capacitive sensing capability of the touchscreen may be disabled prior to detection of the applied force. The instructions may cause the computing device to enable the capacitive sensing capability of the touchscreen in response to the applied force. Further, in some embodiments, the instructions cause the computing device to detect a weight of an object positioned on the touchscreen using the one or more force sensors.
[0054] It is to be understood that specifics in the aforementioned
examples may be used anywhere in one or more embodiments. For instance, all optional features of the computing device described above may also be implemented with respect to either of the methods or the computer-readable medium described herein. Furthermore, although flow diagrams and/or state diagrams may have been used herein to describe embodiments, the
embodiments are not limited to those diagrams or to corresponding
descriptions herein. For example, flow need not move through each illustrated box or state or in exactly the same order as illustrated and described herein.
[0055] The present embodiments are not restricted to the particular details listed herein. Indeed, those skilled in the art having the benefit of this disclosure will appreciate that many other variations from the foregoing description and drawings may be made within the scope of the present embodiments. Accordingly, it is the following claims including any
amendments thereto that define the scope of the embodiments.

Claims

Claims What is claimed is:
1 . A computing device, comprising:
a touchscreen having one or more force sensors;
first logic to detect a force applied to the touchscreen via the one or more force sensors; and
second logic to control a functioning of the touchscreen in response to the applied force.
2. The computing device of claim 1 , wherein the second logic is to: determine whether the applied force exceeds a threshold; and control the functioning of the touchscreen if the applied force exceeds the threshold.
3. The computing device of claim 1 , wherein the second logic is to activate the touchscreen from a deactivated mode in response to the applied force.
4. The method of claim 3, wherein the second logic is to activate the touchscreen from the deactivated mode if the applied force comprises a continuous force applied to the touchscreen in a specified position.
5. The method of claim 1 , wherein the one or more force sensors include a plurality of force sensors, and wherein the second logic is to control the functioning of the touchscreen based on differences between an amount of force sensed by each of the plurality of force sensors.
6. The computing device of claim 5, wherein the plurality of force sensors comprises a force sensor positioned at each corner of the
touchscreen.
7. The computing device of claim 1 , comprising logic to:
identifya position of the applied force; and
control an orientation of the touchscreen based on the position of the applied force.
8. The computing device of claim 7, wherein the one or more force sensors comprise a plurality of force sensors, and wherein the position of the applied force is to be identifiedbased on differences between an amount of force sensed by each of the plurality of force sensors.
9. The computing device of claim 1 , wherein the touchscreen comprises a capacitive sensing capability, and wherein the second logic is to control the functioning of the touchscreen by enabling the capacitive sensing capability of the touchscreen in response to the applied force.
10. The computing device of claim 1 , comprising logic to detect a weight of an object positioned on the touchscreen using the one or more force sensors.
1 1 . The computing device of claim 1 , wherein the computing device comprises a mobile phone.
12. The computing device of claim 1 , comprising a touchscreen controller toimplement the first logic and the second logic.
13. The computing device of claim 1 , comprising a processor to implement the first logic and the second logic.
14. A computing device, comprising:
a touchscreen having one or more force sensors;
aprocessor that is configured to execute stored instructions;and a storage device tostores instructions, the storage device comprising processor executable code that, when executed by the processor, is configured to:
detect a force applied to the touchscreen via theone or more force sensors; and
control a functioning of the touchscreen in response to the applied force.
15. The computing device of claim 14, wherein the processor executable code is configured to:
determine whether the applied force exceeds a threshold; and
control the functioning of the touchscreen if the applied force exceeds the threshold.
16. The computing device of claim 14, wherein the computing device comprises a mobile phone.
17. The computing device of claim 14, wherein the processor executable code is configured to activate the touchscreen from a deactivated mode in response to the applied force.
18. The computing device of claim 14, wherein the one or more force sensors comprise a plurality of force sensors, and wherein the processor executable code is configured to:
identify a position of the applied force based on differences between an amount of force sensed by each of the plurality of force sensors; and
control an orientation of the touchscreen based on the position of the applied force.
19. At least one machine readable medium having instructions stored therein that, in response to being executed on a computing device, cause the computing device to:
detect a force applied to a touchscreen of the computing device via one or more force sensors forthe touchscreen; and
control a functioning of the touchscreen in response to the applied force.
20. The at least one machine readable medium of claim 19, wherein the instructions cause the computing device to:
determine whether the applied force exceeds a threshold; and
control the functioning of the touchscreen if the applied force exceeds the threshold.
21 . The at least one machine readable medium of claim 19, wherein the instructions cause the computing device to activate the touchscreen from a deactivated mode in response to the applied force.
22. The at least one machine readable medium of claim 19, wherein the one or more force sensors comprise a plurality of force sensors, and wherein the instructions cause the computing device to: detect a position of the applied force based on differences between an amount of force sensed by each of the plurality of force sensors; and
control an orientation of the touchscreen based on the position of the applied force.
23. The at least one machine readable medium of claim 22, wherein the plurality of force sensors comprises a force sensor positioned at each corner of the touchscreen.
24. The at least one machine readable medium of claim 19, wherein the touchscreen comprises a capacitive sensing capability, and wherein the one or more force sensors are enabled and the capacitive sensing capability of the touchscreen is disabled prior to detection of the applied force, and wherein the instructions cause the computing device to enable the capacitive sensing capability of the touchscreen in response to the applied force.
25. The at least one machine readable medium of claim 19, wherein the instructions cause the computing device to detect a weight of an object positioned on the touchscreen using the one or more force sensors.
PCT/CN2012/087073 2012-12-20 2012-12-20 Touchscreen including force sensors Ceased WO2014094283A1 (en)

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US13/976,797 US9600116B2 (en) 2012-12-20 2012-12-20 Touchscreen including force sensors
CN201280071953.6A CN104380231B (en) 2012-12-20 2012-12-20 Touch screen including pressure sensor
PCT/CN2012/087073 WO2014094283A1 (en) 2012-12-20 2012-12-20 Touchscreen including force sensors
US15/423,790 US20170242519A1 (en) 2012-12-20 2017-02-03 Touchscreen including force sensors
US16/035,541 US20190050101A1 (en) 2012-12-20 2018-07-13 Touchscreen including force sensors

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