US20190332220A1 - Apparatus and method of adjusting power mode of a display of a device - Google Patents
Apparatus and method of adjusting power mode of a display of a device Download PDFInfo
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- US20190332220A1 US20190332220A1 US16/505,230 US201916505230A US2019332220A1 US 20190332220 A1 US20190332220 A1 US 20190332220A1 US 201916505230 A US201916505230 A US 201916505230A US 2019332220 A1 US2019332220 A1 US 2019332220A1
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- Prior art keywords
- display
- contact
- power mode
- use state
- proximity sensor
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- 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
- G06F3/041—Digitisers, e.g. for touch screens or touch pads, characterised by the transducing means
- G06F3/0416—Control or interface arrangements specially adapted for digitisers
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- 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
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
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- 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
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G5/00—Control arrangements or circuits for visual indicators common to cathode-ray tube indicators and other visual indicators
- G09G5/003—Details of a display terminal, the details relating to the control arrangement of the display terminal and to the interfaces thereto
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- 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
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
- G06F1/3206—Monitoring of events, devices or parameters that trigger a change in power modality
- G06F1/3231—Monitoring the presence, absence or movement of users
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
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- G—PHYSICS
- G09—EDUCATION; CRYPTOGRAPHY; DISPLAY; ADVERTISING; SEALS
- G09G—ARRANGEMENTS OR CIRCUITS FOR CONTROL OF INDICATING DEVICES USING STATIC MEANS TO PRESENT VARIABLE INFORMATION
- G09G2330/00—Aspects of power supply; Aspects of display protection and defect management
- G09G2330/02—Details of power systems and of start or stop of display operation
- G09G2330/021—Power management, e.g. power saving
- G09G2330/022—Power management, e.g. power saving in absence of operation, e.g. no data being entered during a predetermined time
Abstract
Methods and devices for adjusting a power mode of a display are disclosed. An example method includes detecting a set of contact signals on a surface of the device and determining whether the set of contact signals correspond to a contact signature associated with an in-use state of the display. The example method further includes transitioning the power mode of the display to a power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display, and retaining the power mode of the display in a current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display. An additional example method may further include detecting whether a proximity sensor at the device is occluded prior to the transition.
Description
- This application is a continuation of U.S. Non-Provisional application Ser. No. 15/375,991, entitled “APPARATUS AND METHOD OF ADJUSTING POWER MODE OF A DISPLAY OF A DEVICE” and filed on Dec. 12, 2016, which is expressly incorporated by reference herein in its entirety.
- The present disclosure relates to saving power of a device, and more particularly, to adjusting a power mode of a display of the device.
- A display of a device consumes a significant share of battery power available of the device. For example, for a computer device, some reports estimate that a display may utilize about of 80% of the battery power available at the device. Current solutions that attempt to change operation of the display to save power can work in some instances, however, such solutions also include certain drawbacks. For instance, some current solutions attempt to utilize a proximity sensor in the vicinity of the display, but these solutions often generate false positives of the proximity sensor being blocked, which causes the display to be turned off prematurely and ruins the user experience.
- The following presents a simplified summary of one or more disclosed features in order to provide a basic understanding of the disclosure. This summary is not an extensive overview of all contemplated implementations, and is intended to neither identify key or critical elements of all implementations nor delineate the scope of any or all implementations of the present disclosure. Its sole purpose is to present some concepts of one or more features of the present disclosure in a simplified form as a prelude to the more detailed description that is presented later.
- One implementation relates to a method of detecting a set of contact signals on a surface of the device, determining whether the set of contact signals correspond to a contact signature associated with an in-use state of the display, transitioning the power mode of the display to a power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display, and retaining the power mode of the display in a current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display.
- In another implementation, an apparatus for adjusting a power mode of a display of a device may include a memory and a processor in communication with the memory, wherein the processor is configured to detect a set of contact signals on a surface of the device, determine whether the set of contact signals correspond to a contact signature associated with an in-use state of the display, transition the power mode of the display to a power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display, and retain the power mode of the display in a current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display.
- In a further implementation, a computer-readable medium storing computer-executable instructions executable by a processor for adjusting a power mode of a display of a device is disclosed. The computer-readable medium includes instructions for detecting a set of contact signals on a surface of the device, determining whether the set of contact signals correspond to a contact signature associated with an in-use state of the display, transitioning the power mode of the display to a power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display, and retaining the power mode of the display in a current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display.
- Additional advantages and novel features relating to features of the present disclosure will be set forth in part in the description that follows, and in part will become more apparent to those skilled in the art upon examination of the following or upon learning by practice thereof.
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FIGS. 1A and 1B are schematic block diagrams of an example device which may include one or more components and/or subcomponents for adjusting a power mode of a display at device in accordance with various implementations of the present disclosure. -
FIG. 2 is a schematic view of an example digitizer system or digitizer for detecting contacts signatures on the surface of the device in accordance with various implementations of the present disclosure. -
FIG. 3 is a flow diagram of an example method related to adjusting a power mode of a display at a device in accordance with various implementations of the present disclosure. -
FIGS. 4-6 are front views of a device including example contact signatures which indicate whether the user of the device is engaged with the device in accordance with various implementations of the present disclosure. -
FIG. 7 is a flowchart of an example method of adjusting a power mode of a display at a device in accordance with various implementations of the present disclosure. - The present disclosure provides for a mechanism/procedure/technique and an apparatus for adjusting a power mode of a display of a device. A power mode adjusting component may be configured to determine whether the user of the device is engaged with the display of the device (e.g., also referred to as “in-use state” of the display) based on a grip or a touch signature, also referred to as a contact signature, produced on a surface (e.g., display or sides) of the device. The power mode adjusting component may transition the display of the device to a power saving mode (e.g., low power mode or an idle mode) when the contact signature indicates the user is no longer engaged with the device, or may retain the display of the device at the current power mode when the contact signature indicates that the user is actively engaged with the display of the device. Additionally, the power mode adjusting component may be further configured to check whether a proximity sensor at the device is occluded prior to the transitioning or retaining the power mode of the display of the device, which may improve reliability of the procedure. Thus, implementations of the disclosed power mode adjusting component may improve efficiency in power usage of the display of the device.
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FIG. 1A includes anexample device 100 which may have one or more components and/or subcomponents, such as a power mode adjusting component 112, for adjusting a power mode of adisplay 144 in communication with and/or controlled bydevice 100 based on contact signatures and/or objects contacting or close to surface ofdevice 100 and being correlated with whether and/or how a user is engaged or interacting withdevice 100. AlthoughFIG. 1A includesdisplay 144 withindevice 100, it should be understood that in somecases display 144 may be integrated withdevice 100, while inother cases display 144 may be separate fromdevice 100. It should also be noted thatdevice 100 may havemultiple displays 144 and/or that different users may be using the multiple displays. In some implementations,device 100 may be a personal computer (PC), gaming device, tablet, lap-top computer, personal digital assistant (PDA), mobile phone, mobile station (MS), user equipment (UE), etc.Device 100 may further include or otherwise be communicatively coupled with aprocessor 110 and/or amemory 120, where theprocessor 110 and/or thememory 120 may be configured to execute or store instructions or other parameters, such as athreshold 126, for performing the functions described herein. - Additionally,
device 100 may include one ormore sensors 130, such as but not limited to one ormore proximity sensors 132. In one example,proximity sensor 132 may be an infrared (IR) sensor that can detect the presence of nearby objects. For instance,proximity sensor 132 may detect nearby objects based onproximity sensor 132 being occluded (e.g., blocked, obscured, etc.) by a human body part, such as the user's ear, fingers, and/or by other objects (e.g., device set face down on a table, device placed in the user's pockets). In another example,proximity sensor 132 may be located ondisplay 100 where it is positioned relative to display 144 (or any other structure ondevice 100, e.g., edges ofdevice 100, that may be relevant). - Further,
display 144 may be or include a liquid crystal display (LCD), a light emitting diode (LED), an organic LED (OLED), or any other type of output generating device that utilizes energy (e.g., power from a battery or electrical circuit). In an aspect,display 144 may be a touch-sensitive display, which may include adigitizer 146 that may detect touch inputs (e.g., points and/or areas) ondisplay 144, for example, for detecting whether or not the user is engaged or interacting withdevice 100. In an additional aspect, digitizer may 146 may be separate fromdisplay 144. For example,digitizer 146 may be a touch sensor located on the back or edges of device 100 (and/or not connected to display 144 of device 100) and providing information on howdevice 100 us being touched and/or held. - Furthermore,
device 100 may include one or more communication component(s) 140 for communicating with other devices via a wired or wireless interface (e.g., Bluetooth, radio frequency identification (RFID), near field communication (NFC), among other examples).Device 100 may also include abattery 142 for providing power to various components and/or subcomponents ofdevice 100. - Also,
device 100 may include an operating system executed byprocessor 110 and/ormemory 120 ofdevice 100.Memory 120 may be configured for storing data and/or computer-executable instructions defining and/or associated with operating system (and/or firmware). An example ofmemory 120 may include, but is not limited to, a type of memory usable by a computer, such as random access memory (RAM), read only memory (ROM), tapes, magnetic discs, optical discs, volatile memory, non-volatile memory, and any combination thereof.Processor 110 may execute operating system and/or one or more associated components such as power mode adjusting component 112. An example ofprocessor 110 may include, but is not limited to, any processor specially programmed as described herein, including a controller, microcontroller, application specific integrated circuit (ASIC), field programmable gate array (FPGA), system on chip (SoC), or any other programmable logic or state machine. - Additionally, power mode adjusting component 112 may determine whether a user of
device 100 is engaged withdevice 100 based on at least a contact signature associated with the user ofdevice 100. A contact signature may include, but is not limited to, a set of one or more mappings of points or areas of contact of an object, e.g., a user hand or finger(s) or some other inanimate object (e.g., inside of a pocket, table surface), with a point or surface ofdevice 100 and/ordisplay 144. In one implementation, the contact signature may be based on only touch contact (as opposed to both touch and proximity being detected). Further, such contact signatures may be correlated to a user engaged state or a user not engaged state with respect to whether or not the user is interacting withdisplay 144. Further, one or more ofsensors 130, such asdigitizer 146 and/orproximity sensor 132, may detect objects in contact with or near one or more surfaces ofdevice 100 and provide the corresponding data, which may be transformed into a current contact signature. Power mode adjusting component 112 may transition a power mode ofdisplay 144 to a low power mode or an idle mode in response to determining that the user ofdevice 100 is not engaged withdevice 100. Alternatively, power mode adjusting component 112 may retain the power mode ofdisplay 144 in the current power mode in response to determining that the user ofdevice 100 is engaged withdevice 100. - Additionally, in some implementations, power mode adjusting component 112 may further detect whether one or more proximity sensor(s) 132 at
device 100 is occluded prior to transitioning the power mode ofdisplay 144 to the low power mode or the idle mode, or retaining the power mode ofdisplay 144 in the current power mode. -
FIG. 1B includes an example of additional sub-components of power mode adjusting component 112 that are configured to operate together for adjusting power mode ofdisplay 144 atdevice 100 in accordance with various implementations of the present disclosure. - For example, power mode adjusting component 112 may include contact signal detecting component 172 (e.g.,
digitizer 146 or sensors 130) to detect a set of signals on a surface ofdevice 100, a userengagement determination component 182 to determine whether a user ofdevice 100 is engaged withdevice 100 based on at least a contact signature associated with a hand and/or finger(s) of the user in contact withdevice 100. Further, such contact signatures may be correlated to a user engaged state or a user not engaged state. For example, contact signatures may represent, but are not limited to, conditions such as theuser gripping device 100 around edges ofdevice 100, theuser holding device 100 with one or two hands in a landscape orientation, or a contact covering a majority ofdisplay 144 ofdevice 100. For instance, userengagement determination component 182 is configured to compare a currently received contact signature with a library of known contact signatures (e.g., each corresponding to a user engaged state or a user not engaged state), to determine whether the user is engaged withdevice 100. For example, the comparison may include looking at a size of a contact, duration of the contact, movement of the contact, and/or signal strength of the contact, etc. - Further, for example, power mode adjusting component 112 may include power
mode transition component 184 to transition the power mode ofdisplay 144 to a low power mode or an idle mode, or to retain the power mode ofdisplay 144 in the current power mode based at least on the determining whether the user ofdevice 100 is engaged withdevice 100 and/or the detecting whetherproximity sensor 132 is occluded. In one implementation, power mode adjusting component 112 and/or powermode transition component 184 may send a notification to a display controller to either turn off display (e.g., idle mode) with content no longer being rendered or dim a backlight panel (e.g., low power mode) with content still being rendered. - Furthermore, for example, power mode adjusting component 112 may include a proximity sensor occlusion detecting component 186 configured to determine whether
proximity sensor 132 atdevice 100 is occluded based on communication withproximity sensor 132. For instance, proximity sensor occlusion detecting component 186 may queryproximity sensor 132 about the status of theproximity sensor 132, orproximity sensor 132 may send notifications everytime proximity sensor 132 changes states, for example, from blocked to unblocked or unblocked to blocked. In this case, proximity sensor occlusion detecting component 186 may infer from a blocked state ofproximity sensor 132 that a user is not engaged or interacting withdisplay 144, while inferring from an unblocked state ofproximity sensor 132 that a user is engaged or interacting withdisplay 144. In one implementation, power mode adjusting component 112 and/or proximity sensor occlusion detecting component 186, via operating system ofdevice 100, may receive a reading fromproximity sensor 132 that proximity is detected with a distance to a detected object. If the object is within a configured distance toproximity sensor 132, power mode adjusting component 112 and/or proximity sensor occlusion detecting component 186 may determine thatproximity sensor 132 is occluded. - Thus, according to the present disclosure,
device 100 operating power mode adjusting component 112 is able to detect the intent of a user ofdevice 100, e.g., with respect to whether a power mode ofdisplay 144 should be changed, based on whether the user is engaged with device 100 (e.g., interacting with display 144). If not, then power mode adjusting component 112 may idle or turn offdisplay 144 ofdevice 100 to save power. This power savings mechanism may also be extended to include input fromproximity sensor 132, which can provide an additional degree of confidence to a power mode changing decision. In this case, the decision to change the power mode ofdisplay 144 may be further based on whetherproximity sensor 132 is occluded, e.g., blocked, which may indicate that the user is not engaged with device 100 (e.g., and/or not interacting with display 144). - Referring to
FIG. 2 , according to an example implementation, a digitizer system ordigitizer 200, which may be same as or similar todigitizer 146 ofFIG. 1 , may be a part ofdisplay 144 and may be used with any device 100 (e.g., computing device) to enable interactions between a user anddevice 100. For example,digitizer system 200 may be part of a user interface operative to detect inputs from one ormore pens 290,fingers 204, and/orconductive objects 206. -
Digitizer system 200 may include asensor 212 including a patterned arrangement of conductive lines (sensor lines), which may be optionally transparent, and which are typically overlaid on adisplay 202. For example,sensor 212 may be a grid-based sensor including horizontal and vertical lines. In some cases, a width of the conductive line may vary over its length, e.g., the width of the conductive line may be narrower around the vicinity of junction points of the grid and wider between the junction points. In some cases, the conductive lines may be shaped like a diamond shape array with diamond points matched to junction points. In some implementations, the parallel conductive lines are equally spaced straight lines, and are input to amplifiers included in application specific integrated circuit (ASIC) 216. For example, the amplifiers may be differential amplifiers. -
ASIC 216 includes, for example, circuitry to process and sample an output of thesensor 212 and generate a digital representation. The digital output signal is forwarded to adigital unit 220, e.g., a digital ASIC unit, for further digital processing. For instance,digital unit 220 together withASIC 216 may serve as a controller of thedigitizer system 200 and/or may have the functionality of a controller and/or a processor. In some cases, a single unit may be used, e.g., in a small screen with limited number of lines. In some other additional or optional implementations,ASIC 216 operates as a detection unit for processing and sampling the output of thesensor 212. The outcome, which can be a part of a contact signature, once determined, is forwarded to ahost 222, e.g., a computer device or a host computer device, which may be the same as or similar todevice 100, via aninterface 224 for processing by the operating system or any current application. In one implementation, touch classification may be performed inside a touch controller and the touch controller may communicate, via a communication channel, power mode ofdevice 100 to an arbiter of the power mode. In another implementation, control functionality may be additionally or exclusively included in thehost 222, andASIC 216 anddigital unit 220 may be provided as a single ASIC. In some other optional implementations,digital unit 220 andASICs 216 may be mounted in aPCB 230. -
ASIC 216 may be connected to the outputs of the various conductive lines in the grid and functions to process the received signals at a first processing stage. In some cases, instead of aPCB 230 positioned along two sides ofsensor 212, a flex cable may be used to connect the conductive lines to ASICs 216, e.g., positioned away from a sensing surface ofdigitizer 200. As indicated above,ASIC 216 may include one or more arrays of amplifiers, e.g., an array of differential amplifiers, an array of single ended amplifiers, or any array of differential amplifiers, and optionally including one grounded input to amplify the sensor's signals. In some other additional or optional implementations, the grounding input may be selected byASIC 216.ASIC 216 may optionally include one or more filters to remove irrelevant frequencies. Additionally, filtering is performed prior to sampling. The signal is then sampled by an A/D, optionally filtered by a digital filter and forwarded to digital ASIC unit, for further digital processing. Alternatively, the optional filtering is fully digital or fully analog. - For instance,
digital unit 220 receives the sampled data fromASIC 216, reads the sampled data, processes it and determines and/or tracks the position of physical objects, such aspen 290 and/orfinger 204, touching thedigitizer sensor 212. Further, for example,digital unit 220 is operative to decode information encoded in a transmission signal frompen 290, e.g., pressure on tip, right-click and/or eraser mode, color for tracing, and identification, etc. According to some implementations, hovering of an object, e.g.,pen 290,finger 204 and/or hand, may be detected and processed bydigital unit 220. In any case,digital unit 220 can send a calculated position to thehost 222 viainterface 224. - In some implementations, digitizer system or
digitizer 200 has several channels, i.e., interfaces included withininterface 224, with the host. In an example,interface 224 includes a pen interface for transmitting pen coordinates on the display screen, and a finger touch interface for transmitting finger touch coordinates on the display screen. In some additional examples, a same interface ofinterface 224 may transmit finger touch coordinates based on both single touch detection method and multi-touch detection method, for example, as described below in reference toFIGS. 4-6 . Optionally, theinterface 224 may transmit information on detected gestures. - Further,
digital unit 220 may be operative to control operation of one or more ASIC(s) 216. For instance,digital unit 220 may be operative to provide a command signal toASIC 216 to switch between a plurality of available circuit paths (two or more) to connect to outputs of the various conductive lines in the grid. In some cases,digital unit 220 together withASIC 216 provides for alternately connecting outputs of the various conductors to one of an array of differential amplifiers and an array of single ended amplifiers (or differential amplifiers with one grounded input). In other cases,digital unit 220 may be operative to control triggering of one or more conductive lines. In other examples,ASIC 216 together withdigital unit 220 provide for triggering various conductors with an oscillating signal having a selected pre-defined frequency or frequencies. -
Digital unit 220 may include at least a memory unit and a processing unit to store and process information obtained fromASIC 216. Memory and processing capability are also generally included inhost 222 andASIC 126. According to some implementations, memory and processing functionality may be divided between any combination ofhost 222,digital unit 220, and/orASIC 216. -
FIG. 3 is a flow diagram of anexample method 300 related to adjusting a power mode ofdisplay 144 atdevice 100 in accordance with various implementations of the present disclosure. Although the operations described below are presented in a particular order and/or as being performed by an example component, it should be understood that the ordering of the actions and the components performing the actions may be varied, depending on the implementation. - At an
optional block 310, power mode adjusting component 112 and/or proximity sensor occlusion detecting component 186 detects thatproximity sensor 132 is occluded (e.g., blocked, obstructed). As described above in reference toFIG. 1 ,proximity sensor 132 may be an IR sensor that can detect the presence of nearby objects, and may have been occluded by user's ear/fingers, bydevice 100 being placed faced down on a table, or bydevice 100 being in user's pockets, as described in detail in reference toFIGS. 4-6 . - 400609-US-CNT
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Method 300 may proceed to block 320, either initially or, optionally, based on a determination thatproximity sensor 132 is occluded. Specifically, atblock 320,method 300 may determine whether any touch signals are detected ondisplay 144 ofdevice 100. The touch signals may be detected bydigitizer 146 as described above in detail in reference toFIG. 2 . - In one option, from
block 320,method 300 may proceed to block 330 based on a determination that touch signals are detected atdisplay 144 ofdevice 100. Specifically, atblock 330,method 330 may determine whether the touch signals detected bydigitizer 146 are associated with a contact signature that may indicate that the user of power modeadjusting component device 100 is engaged with thedevice 100. For example, as discussed above, power mode adjusting component 112 and/or userengagement determination component 182 may determine whether the user is grippingdevice 100 around edges ofdevice 100 or holdingdevice 100 with one or two hands in a landscape orientation. - Alternatively, in another option from
block 320,method 300 may proceed to block 325 based on a determination that digitizer 146 does not detect any touch signals ondisplay 144 of the device. Atblock 325,display 144 ofdevice 100 may be transitioned to a lower power mode or sleep mode in response to determining that no touch signals are detected atdisplay 144 ofdevice 100, as described in detail in reference toFIGS. 4-6 . - In one option, from
block 330,method 300 may proceed to block 340 based on a determination that the touch signals are associated with a contact signature that indicate that the user ofdevice 100 is engaged withdevice 100. Specifically, atblock 340,method 300 may retain (e.g., leave, keep, etc.)display 144 ofdevice 100 in the current power state (e.g., normal power state), as described in detail in reference toFIGS. 4-6 . This ensures thatdisplay 144 ofdevice 100 is not erroneously idled or transitioned to a low power state when the user is engaged withdevice 100, which may affect the user's experience. - Alternatively, in the other option from
block 330,method 300 may proceed to block 325 based on a determination that the touch signals are not associated with a contact signature that indicate a user is engaged withdevice 100, for example, a smudge on a majority portion of the display of device 100 (FIG. 4 ). - In some implementations, power mode adjusting component 112 may transition the display of the device to the normal power state once the power mode adjusting component 112 determines that the user is engaged with
device 100 and/orproximity sensor 132 is not blocked. Thus, according to the present disclosure, power mode adjusting component 112 may adjust a power mode ofdisplay 144 atdevice 100 based on whether the user is engaged withdevice 100 and/or whetherproximity sensor 132 is occluded, which may thereby balance user experience with power savings. -
FIG. 4 includes an example contact signature that indicates the user of the device is not engaged with the device in accordance with one implementation of the present disclosure. - For example,
device 400, which may be same as or similar todevice 100 ofFIG. 1 , may include aproximity sensor 410 that may or may not be occluded (as indicated by the unfilled circle formed by a solid line), and a digitizer 440 (as indicated by a dotted line) that detects contact on a display 430 (as indicated by a solid line) of device 400 (same as or similar to display 144 of device 100) and produces acontact signature 420, also referred to as asmudge 420. It should be noted thatdigitizer 440 may not literally displaycontact signature 420 ondisplay 430.Digitizer 440 may be the same as or similar todigitizer 146 discussed above. For example,contact signature 420 may cover a majority (or other determined percentage or area) ofdisplay 430 ofdevice 400 and may be associated withdevice 400 being placed in a pocket of the user withdisplay 430 facing a leg of the user, or withdevice 400 being placed faced down on an object (e.g., a table). -
Device 400 may determine whethercontact signature 420 covers a majority (or other determined percentage or area) ofdisplay 430 by comparing the area covered bycontact signature 420 with a threshold 126 (e.g., an area or percentage of the area of the display). For example, in an aspect, power mode adjusting component 112 may determine whethercontact signature 420 is sufficiently large (or big) enough to be associated withdevice 400 being placed in the pocket of the user with the display facing the leg of the user, or faced down on an object, by comparing the size of the smudge withthreshold 126, such as whethercontact signature 420 covers at least 75% of a display area ofdisplay 430. It should be understood thatthreshold 126 may be set to any configurable value. In this example, ifcontact signature 420 occupies 80% of the display area ofdisplay 430, then power mode adjusting component 112 may determine thatcontact signature 420 does not match or correlate to, or is not associated with, a contact signature that indicates the user is engaged with the device (in other words,contact signature 420 matches, correlates to, or is associated with, a contact signature that indicates the user is not engaged with the device). As such, power mode adjusting component 112 may transitiondisplay 430 to a low power mode or idle mode. Alternatively, in another case wherecontact signature 420 may be smaller, such as whencontact signature 420 occupies, for example, 20% of the display area ofdisplay 430, power mode adjusting component 112 may determine thatcontact signature 420 may be associated with a contact signature that indicates the user is engaged with the device. In this scenario, power mode adjusting component 112 may maintaindisplay 430 in a current power mode. - In some implementations, once
display 430 ofdevice 400 is transitioned to a low power mode or idle mode, power mode adjusting component 112 may further disabledisplay 430 ofdevice 400 from waking up (e.g., transitioning to the normal power state) to avoiddisplay 430 ofdevice 400 transitioning to the normal power state, e.g., due to accidental pressing of buttons ondevice 400 whendevice 400 is located, for example, in the pocket of the user. In this scenario, for instance, the user ofdevice 400 may have to actively provide an input to the 400 to transition to the normal power state. -
FIG. 5 includes an example contact signature that indicates the user of the device is engaged with the device in accordance with one implementation of the present disclosure. - For example,
device 500, which may be same as or similar todevice 100 ofFIG. 1 , may include aproximity sensor 510 that is not occluded (as indicated by the unfilled circle formed by a dashed line), and a digitizer 540 (as indicated by a dotted line) that detects contact on a display 530 (as indicated by a solid line) ofdevice 500 and produces acontact signature 520. It should be noted thatdigitizer 540 may not literally displaycontact signature 520 ondisplay 530.Digitizer 540 may be the same as or similar todigitizer 146 discussed above. In this case,contact signature 520 may indicate a user ofdevice 500gripping device 500 around the edges of display 530 (e.g., along the edges of device 500).Contact signature 520 may be represented by “blooms” along the edges ofdisplay 530. For instance,FIG. 5 indicates auser holding device 500 with a right hand of the user, as shown by four touches on the left side of display and one touch on right side ofdisplay 530. Based oncontact signature 520, power mode adjusting component 112 may determine thatcontact signature 520 matches, correlates to, or may be associated with a contact signature of the user gripping the device around the edges ofdevice 500, thereby indicating the user is engaged withdevice 500. In this case, power mode adjusting component 112 may make this determination withoutproximity sensor 510 being occluded, and may retain the power mode ofdisplay 530 in the current power mode. Alternatively, in another case wherecontact signature 520 fails to match, power mode adjusting component 112 may determine thatcontact signature 520 may be associated with a contact signature that indicates the user is not engaged with the device. In this scenario, power mode adjusting component 112 may transitiondisplay 530 ofdevice 500 to the low power mode or the normal power mode. -
FIG. 6 illustrates an example contact signature that indicates the user of the device is engaged with the device in accordance with one implementation of the present disclosure. - For example,
device 600, which may be same as or similar todevice 100 ofFIG. 1 , may include aproximity sensor 610, which may be occluded (as indicated by the filled circle), and a digitizer 640 (as indicated by a dotted line) that detects contact on a display 630 (as indicated by a solid line) ofdevice 600 and produces acontact signature 620. It should be noted thatdigitizer 640 may not literally displaycontact signature 620 ondisplay 630.Digitizer 640 may be the same as or similar todigitizer 146 discussed above. In this case,contact signature 620 may indicate the user is holdingdevice 600 with one or two hands in a landscape orientation as indicated by the user's palms and/or thumbs incontact signature 620. In response, power mode adjusting component 112 may determine thatcontact signature 620 matches, correlates to, or may be associated with a contact signature of theuser holding device 600 with one or two hands in a landscape orientation, and indicating the user ofdevice 600 is engaged withdevice 600 withproximity sensor 610 occluded. As such, power mode adjusting component 112 may retain the power mode ofdisplay 630 in the current power mode. Alternatively, in another case wherecontact signature 620 fails to match, power mode adjusting component 112 may determine thatcontact signature 620 may be associated with a contact signature that indicates the user is not engaged with the device. In this scenario, power mode adjusting component 112 may transitiondisplay 630 ofdevice 600 to the low power mode or the normal power mode. -
FIG. 7 includes an example of amethod 700 performed by power mode adjusting component 112 ofdevice 100 for adjusting a power mode ofdisplay 144 atdevice 100. - For example, at
block 710,method 700 may optionally include detecting whether a proximity sensor at the device is occluded. For example, power mode adjusting component 112 may detect whetherproximity sensor 132 is occluded. In some implementations, the status (e.g., blocked/unblocked) ofproximity sensor 132 may be used, in addition to the contact signatures, to determine whether to transitiondevice 100 to a low power/idle mode or retain the power mode ofdisplay 144 in the current power mode. - For example, at
block 720,method 700 may include detecting a set of signals on a surface of the device. For example, power mode adjusting component 112 may detect a set of contact signals (e.g., one or more signals) on a surface (e.g., display or edges of device 100). - For example, at
block 730,method 700 may include determining whether thee set of contact signals correspond to a contact signature associated with an in-use state of the display. For example, power mode adjusting component 112 may determine whether the set of contact signals correspond to a contact signature, for example, described in detail in reference toFIGS. 4-6 , associated with an in-use state ofdisplay 144. - For example, the contact signature may be a first contact signature associated with the
user gripping device 100 around the edges ofdevice 100 indicating the user is engaged with device 100 (e.g.,contact signature 520 ofFIG. 5 ), a second contact signature associated with theuser holding device 100 with one or two hands in a landscape orientation, indicating the user ofdevice 100 is engaged with device 100 (e.g.,contact signature 620 ofFIG. 6 ), and a third contact signature associated with a contact covering a majority ofdisplay 144 indicating the user ofdevice 100 is not engaged with the device (e.g.,contact signature 420 ofFIG. 4 ). It should be noted that other contact signatures may be utilized, including contact signatures that indicate the user is not engaged withdevice 100 as well as contact signatures that indicate the user is engaged withdevice 100. Further, for example, power mode adjusting component 112 may receive current contact signatures based on contacts detected bydigitizer 146, compare contact signatures with known contact signatures, and identify if there is a match. - At
block 740,method 700 includes transitioning the power mode of the display to a power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display. - At
block 750,method 700 includes retaining the power mode of the display in a current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display. - In some implementations, power mode adjusting component 112 and/or power
mode transition component 184 may retain the power mode of the display in the current power mode (e.g., standard or normal power mode) in response to determining that the contact signature is the first contact signature associated with the user gripping the device around edges of the device, and with or without the proximity sensor being occluded. For example,proximity sensor 132 may have been occluded by the user's other hand. - Further, in some implementations, power mode adjusting component 112 and/or power
mode transition component 184 may retain the power mode of the display in the current power mode in response to determining that the contact signature is a second contact signature associated with the user holding the device with one or two hands in the landscape view indicating the user of the device is engaged with the device and with the proximity sensor occluded. - Furthermore, in some implementations, power mode adjusting component 112 and/or power
mode transition component 184 may transition the power mode of the display to a low power mode or an idle mode in response to determining that the contact signature is a third contact signature associated with smudge covering a majority of the display (e.g., 420 ofFIG. 4 ) indicating the user of the device is not engaged with the device and with the proximity sensor occluded. - The implementations described above also provide for transitioning
display 144 to a low power mode or an idle mode when display 144 (or a touch panel of display 144) is covered by a non-capacitive object (e.g., a table) based on the occlusion ofproximity sensor 132 and absence of any grip or touch signatures ondisplay 144 ofdevice 100. - Thus, the power mode of
display 144 atdevice 100 may be adjusted to save power and/or avoid erroneously idlingdisplay 144 atdevice 100. The implementations described above achieve a balance between power savings and user experience. - As used in this application, the terms “component,” “system” and the like are intended to include a computer-related entity, such as but not limited to hardware, firmware, a combination of hardware and software, software, or software in execution. For example, a component may be, but is not limited to being, a process running on a processor, a processor, an object, an executable, a thread of execution, a program, and/or a computer. By way of illustration, both an application running on a computer device and the computer device can be a component. One or more components can reside within a process and/or thread of execution and a component may be localized on one computer and/or distributed between two or more computers. In addition, these components can execute from various computer readable media having various data structures stored thereon. The components may communicate by way of local and/or remote processes such as in accordance with a signal having one or more data packets, such as data from one component interacting with another component in a local system, distributed system, and/or across a network such as the Internet with other systems by way of the signal.
- Moreover, the term “or” is intended to mean an inclusive “or” rather than an exclusive “or.” That is, unless specified otherwise, or clear from the context, the phrase “X employs A or B” is intended to mean any of the natural inclusive permutations. That is, the phrase “X employs A or B” is satisfied by any of the following instances: X employs A; X employs B; or X employs both A and B. In addition, the articles “a” and “an” as used in this application and the appended claims should generally be construed to mean “one or more” unless specified otherwise or clear from the context to be directed to a singular form.
- Various implementations or features will be presented in terms of systems that may include a number of devices, components, modules, and the like. It is to be understood and appreciated that the various systems may include additional devices, components, modules, etc. and/or may not include all of the devices, components, modules etc. discussed in connection with the figures. A combination of these approaches may also be used.
- The various illustrative logics, logical blocks, and actions of methods described in connection with the embodiments disclosed herein may be implemented or performed with a specially-programmed one of a general purpose processor, a digital signal processor (DSP), an application specific integrated circuit (ASIC), a field programmable gate array (FPGA) or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. A general-purpose processor may be a microprocessor, but, in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine. A processor may also be implemented as a combination of computer devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration. Additionally, at least one processor may comprise one or more components operable to perform one or more of the steps and/or actions described above.
- Further, the steps and/or actions of a method or algorithm described in connection with the implementations disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two. A software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, a hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art. An exemplary storage medium may be coupled to the processor, such that the processor can read information from, and write information to, the storage medium. In the alternative, the storage medium may be integral to the processor. Further, in some implementations, the processor and the storage medium may reside in an ASIC. Additionally, the ASIC may reside in a user terminal. In the alternative, the processor and the storage medium may reside as discrete components in a user terminal. Additionally, in some implementations, the steps and/or actions of a method or algorithm may reside as one or any combination or set of codes and/or instructions on a machine readable medium and/or computer readable medium, which may be incorporated into a computer program product.
- In one or more implementations, the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored or transmitted as one or more instructions or code on a computer-readable medium. Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another. A storage medium may be any available media that can be accessed by a computer. By way of example, and not limitation, such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and that can be accessed by a computer. Disk and disc, as used herein, includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs usually reproduce data optically with lasers. Combinations of the above should also be included within the scope of computer-readable media.
- While implementations of the present disclosure have been described in connection with examples thereof, it will be understood by those skilled in the art that variations and modifications of the implementations described above may be made without departing from the scope hereof. Other implementations will be apparent to those skilled in the art from a consideration of the specification or from a practice in accordance with implementations disclosed herein.
Claims (20)
1. A method of adjusting a power mode of a display of a device, comprising:
detecting a set of contact signals on a touch surface of the device;
determining whether the set of contact signals correspond to a contact signature associated with an in-use state of the display based on one or more of a signal strength or a duration corresponding to the set of contact signals, and based on a number of contacts of an object with the touch surface of the display or a movement of the contacts of the object, wherein the contact signature corresponds to one or more mappings of areas of the contacts of the object;
transitioning the power mode of the display to a power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display; and
retaining the power mode of the display in a current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display.
2. The method of claim 1 , further comprising:
detecting whether a proximity sensor at the device is occluded,
wherein transitioning the power mode of the display to the power saving mode and retaining the power mode of the display in the current power mode are further based on whether the proximity sensor is occluded.
3. The method of claim 2 , wherein the contact signature is associated with the device being held around edges of the device indicating the in-use state of the display, wherein the detecting includes detecting the proximity sensor is not occluded, and retaining the power mode of the display in the current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display and detecting that the proximity sensor is not occluded.
4. The method of claim 2 , wherein the contact signature is associated with the device being held with one or two hands in a landscape orientation indicating the in-use state of the display, wherein the detecting includes detecting the proximity sensor is occluded, and retaining the power mode of the display in the current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display and detecting that the proximity sensor is occluded.
5. The method of claim 2 , wherein the contact signature is associated with the display of the device being covered which does not indicate the in-use state of the display, wherein the detecting includes detecting the proximity sensor is occluded, and transitioning the power mode of the display to the power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display.
6. The method of claim 5 , further comprising:
comparing a size of the set of contact signals on the touch surface of the device with a threshold; and
determining whether the set of contact signals correspond to the contact signature associated with in-use state of the display based on a result of the comparing.
7. The method of claim 5 , further comprising:
disabling the display of the device in response to detecting a button being pressed on the device after transitioning the device to the power saving mode.
8. An apparatus for adjusting a power mode of a display of a device, comprising:
a memory; and
a processor in communication with the memory, wherein the processor is configured to:
detect a set of contact signals on a touch surface of the device;
determine whether the set of contact signals correspond to a contact signature associated with an in-use state of the display based on one or more of a signal strength or a duration corresponding to the set of contact signals, and based on a number of contacts of an object with the touch surface of the display or a movement of the contacts of the object, wherein the contact signature corresponds to one or more mappings of areas of the contacts of the object;
transition the power mode of the display to a power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display; and
retain the power mode of the display in a current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display.
9. The apparatus of claim 8 , wherein the processor is further configured to:
detect whether a proximity sensor at the device is occluded,
wherein transition the power mode of the display to the power saving mode and retain the power mode of the display in the current power mode are further based on whether the proximity sensor is occluded.
10. The apparatus of claim 9 , wherein the contact signature is associated with the device being held around edges of the device indicating the in-use state of the display, wherein the proximity sensor is not occluded, and wherein the processor is further configured to retain the power mode of the display in the current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display and that the proximity sensor is not occluded.
11. The apparatus of claim 9 , wherein the contact signature is associated with the device being held with one or two hands in a landscape orientation indicating the in-use state of the display, wherein the proximity sensor is occluded, and wherein the processor is further configured to retain the power mode of the display in the current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display and that the proximity sensor is occluded.
12. The apparatus of claim 9 , wherein the contact signature is associated with the display of the device being covered which does not indicate the in-use state of the display, wherein the proximity sensor is occluded, and wherein the processor is further configured to transition the power mode of the display to the power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display.
13. The apparatus of claim 12 , wherein the processor is further configured to:
compare a size of the set of contact signals on the touch surface of the device with a threshold; and
determine whether the set of contact signals correspond to the contact signature associated with in-use state of the display based on a result of the size of the set of contact signals on the touch surface of the device being compared with the threshold.
14. The apparatus of claim 12 , wherein the processor is further configured to:
disable the display of the device in response to detecting a button being pressed on the device after transitioning the device to the power saving mode.
15. A non-transitory computer-readable medium storing computer-executable instructions executable by a processor for adjusting a power mode of a display of a device, comprising:
instructions for detecting a set of contact signals on a touch surface of the device;
instructions for determining whether the set of contact signals correspond to a contact signature associated with an in-use state of the display based on one or more of a signal strength or a duration corresponding to the set of contact signals, and based on a number of contacts of an object with the touch surface of the display or a movement of the contacts of the object, wherein the contact signature corresponds to one or more mappings of areas of the contacts of the object;
instructions for transitioning the power mode of the display to a power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display; and
instructions for retaining the power mode of the display in a current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display.
16. The non-transitory computer-readable medium of claim 15 , further comprising:
instructions for detecting whether a proximity sensor at the device is occluded,
wherein transitioning the power mode of the display to the power saving mode and retaining the power mode of the display in the current power mode are further based on whether the proximity sensor is occluded.
17. The non-transitory computer-readable medium of claim 16 , wherein the contact signature is associated with the device being held around edges of the device indicating the in-use state of the display, wherein the proximity sensor is not occluded, and further comprising instructions for retaining the power mode of the display in the current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display and that the proximity sensor is not occluded.
18. The non-transitory computer-readable medium of claim 16 , wherein the contact signature is associated with the device being held with one or two hands in a landscape orientation indicating the in-use state of the display, wherein the proximity sensor is occluded, and further comprising instructions for retaining the power mode of the display in the current power mode in response to determining that the set of contact signals correspond to the contact signature associated with the in-use state of the display and that the proximity sensor is occluded.
19. The non-transitory computer-readable medium of claim 16 , wherein the contact signature is associated with the display of the device being covered which does not indicate the in-use state of the display, wherein the proximity sensor is occluded, and further comprising instructions for transitioning the power mode of the display to the power saving mode in response to determining that the set of contact signals do not correspond to the contact signature associated with the in-use state of the display.
20. The non-transitory computer-readable medium of claim 19 , further comprising:
instructions for comparing a size of the set of contact signals on the touch surface of the device with a threshold; and
instructions for determining whether the set of contact signals correspond to the contact signature associated with in-use state of the display based on a result of the comparing.
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EP3552075A1 (en) | 2019-10-16 |
WO2018111657A1 (en) | 2018-06-21 |
CN110073310B (en) | 2023-08-22 |
CN110073310A (en) | 2019-07-30 |
US10372260B2 (en) | 2019-08-06 |
US20180164942A1 (en) | 2018-06-14 |
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