WO2023033350A1 - 전자 장치 및 그 동작 방법 - Google Patents
전자 장치 및 그 동작 방법 Download PDFInfo
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- WO2023033350A1 WO2023033350A1 PCT/KR2022/010052 KR2022010052W WO2023033350A1 WO 2023033350 A1 WO2023033350 A1 WO 2023033350A1 KR 2022010052 W KR2022010052 W KR 2022010052W WO 2023033350 A1 WO2023033350 A1 WO 2023033350A1
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
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- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
- G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
- G01S13/50—Systems of measurement based on relative movement of target
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- G01S13/56—Discriminating between fixed and moving objects or between objects moving at different speeds for presence detection
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- G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
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- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
- H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
- H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
- H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
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Definitions
- the electronic device determines whether movement has occurred in a space where the radio signal is transmitted by utilizing multi-path channel state characteristic information of a radio signal received from an access point (AP), and determines whether motion has occurred in the space where the radio signal is transmitted.
- AP access point
- multipath channel state characteristic information transmitted from the access point diversifies due to various technical developments of the access point, it may be difficult to uniformly determine whether a motion has occurred based on the multipath channel state characteristic information.
- a signal similarity pattern for each specific section is determined and analyzed based on multi-path channel state characteristic information of a radio signal received from an access point, and movement based on the corresponding multi-path channel state characteristic information
- An electronic device includes a memory including at least one executable command and a processor executing at least one command stored in the memory, and the processor includes an access point (AP) communicating with the electronic device; Multipath channel state characteristic information is obtained based on the radio signal received from the AP), signal similarity for each specific section is calculated based on the multipath channel state characteristic information, and multipath based on the signal similarity pattern for each specific section It may be determined whether motion detection is possible based on the channel state characteristic information.
- AP access point
- An operating method of an electronic device includes an operation of obtaining multi-path channel state characteristic information based on a radio signal received from an access point communicating with the electronic device and a specific determination based on the multi-path channel state characteristic information. Based on whether the pattern of signal similarity for each section is determined to be caused by the user's motion, an operation of determining whether motion detection based on multipath channel state characteristic information is possible may be included.
- FIG. 1 is a diagram for explaining an operation of an electronic device that detects a user movement based on multipath channel state characteristic information received from an access point according to an embodiment.
- FIG. 2 is a diagram for explaining an operation of determining signal similarity for each specific section based on multi-path channel state characteristic information according to an embodiment.
- FIG. 3 is a diagram for explaining a general signal similarity for each specific section according to an embodiment.
- FIG. 4 is a diagram for explaining signal similarity for each specific section when motion detection is possible according to an embodiment.
- 5 is a diagram for explaining signal similarity for each specific section when motion detection is impossible according to an embodiment.
- 6 and 7 are diagrams for explaining an operation of determining whether motion detection is possible based on an AP output adjustment time point and a signal similarity window length for each specific section according to an embodiment.
- FIG. 8 is a block diagram of an electronic device according to an exemplary embodiment.
- FIG. 9 is a detailed block configuration diagram of an electronic device according to an exemplary embodiment.
- FIG. 10 is a block diagram of a mobile device according to an exemplary embodiment.
- FIG. 11 is a diagram for explaining a method of operating an electronic device according to an exemplary embodiment.
- FIG. 1 is a diagram for explaining an operation of an electronic device that detects a user movement based on multipath channel state characteristic information received from an access point according to an embodiment.
- an access point 110 a user 120 and an electronic device 130 are shown.
- the access point 110 may be a device that connects the electronic device 130 to a network using wireless communication (eg, Wi-Fi).
- the access point 110 may transmit a radio signal to the electronic device 130.
- the electronic device 130 may obtain multipath channel state characteristic information based on a radio signal received from the access point.
- the multi-path channel state characteristic information is state information about a communication channel, and indicates, for example, channel frequency response characteristics for each OFDM subcarrier, and may include information about deformation such as attenuation, diffraction, and reflection of a signal between transmitting and receiving ends. there is.
- the multipath channel state characteristic information may include channel state information (CSI).
- the multi-path channel state characteristic information may include a random value unrelated to data to be transmitted, but the value may change if an object (eg, user 120) moves in a space where a radio signal is transmitted. If the characteristics of such multi-path channel state characteristic information are used, it can be determined whether object motion occurs in a space where a radio signal is transmitted.
- the multipath channel state characteristic information may be transmitted together when at least one of a request, a response, and data is transmitted between the access point 110 and the electronic device 130 .
- the electronic device 130 is a device that performs wireless communication with the access point 110, and includes, for example, a mobile phone, a smart phone, a PDA, a netbook, a tablet computer, a laptop computer, a mobile device, a smart watch, a smart band, and a smart device. It may be any one of glasses, wearable devices, desktops, computing devices, televisions, set-top boxes, refrigerators, home appliances, door locks, and security devices. However, the embodiment of the electronic device 130 is not limited thereto, and the description herein may be applied to other devices without limitation. For convenience of description, a case in which the electronic device 130 is a television will be described below as an example.
- the electronic device 130 may determine whether an object movement has occurred based on multipath channel state characteristic information received from the access point 110 . For example, a multi-path channel state acquired by the electronic device 130 while a movement event occurs such as when the user 120 enters a space where a wireless signal is transmitted, sits on a chair, moves an arm, or moves a mouth to speak. Characteristic information may have the same or similar value rather than a random value. However, the motion event is not limited to the above examples. Using these characteristics, the electronic device 130 can switch to an off mode or a power save mode if the movement of the user 120 is not detected for a predetermined period of time or longer.
- the electronic device 130 may switch from an off mode or power save mode to an on mode when the movement of the user 120 is continuously detected after a specific point in time after the movement of the user 120 is not detected. .
- the electronic device 130 determines whether an object movement has occurred based on the multi-path channel state characteristic information received from the access point 110, and performs a subsequent operation based on the determination result, so that the user 120 A personalized service can be provided.
- motion detection based on multi-path channel state characteristic information transmitted from the corresponding access point 110 may not be possible. If a subsequent operation is performed after determining whether an object movement has occurred based on the channel state characteristic information, an operation that is not suitable for the situation may be performed. Accordingly, it is necessary to determine whether motion detection is possible based on multipath channel state characteristic information transmitted from the access point 110, which will be described in detail below.
- the electronic device 130 may include a multi-path channel state characteristic information receiving unit, a multi-path channel state characteristic information pre-processing unit, a signal similarity calculation unit for each specific section, and an unavailable AP determining unit.
- the multipath channel state characteristic information pre-processing unit, the signal similarity calculation unit for each specific section, and the unavailable AP determining unit may be implemented by one or more processors included in the electronic device 130 .
- the multipath channel state characteristic information receiver may receive multipath channel state characteristic information while performing wireless communication with the access point 110 .
- the multi-path channel state characteristic information pre-processing unit may pre-process the received multi-path channel state characteristic information. For example, the multi-pass channel state characteristic information pre-processing unit waves a signal that has changed in an excessive magnitude compared to a predetermined criterion through a Hampel filter, and uses PCA (principal component analysis) to determine the user 120's It is possible to amplify a change in multipath channel state characteristic information due to motion.
- PCA principal component analysis
- the signal similarity calculation unit for each specific section may calculate the signal similarity for each specific section at each sampling time point by applying a self-repayment function to multipath channel state characteristic information received during a predetermined window length.
- the signal similarity for each specific section since the multi-path channel state characteristic information includes random values independent of each other in a state in which there is no object motion, the signal similarity for each specific section may have a value of 0 or close to 0.
- the signal similarity for each specific section since the multi-path channel state characteristic information has a very similar value in a state of object movement, the signal similarity for each specific section may have a value of 1 or close to 1. Using the characteristic of the signal similarity for each specific section, it can be determined whether or not there is motion of an object in a space through which a radio signal is transmitted.
- the signal similarity calculation unit for each specific section calculates the signal similarity for each specific section at each sampling point by applying a predetermined window length to the multi-path channel state characteristic information to determine the change in signal similarity for each specific section over time.
- ACF autocorrelation function
- the unavailable AP determination unit may determine whether the multi-path channel condition characteristic information transmitted from the access point 110 is applicable to motion detection of the user 120 by analyzing a signal similarity pattern for each specific section. Determination of whether or not it can be applied to motion detection will be described in detail through the following drawings.
- FIG. 2 is a diagram for explaining an operation of determining signal similarity for each specific section based on multi-path channel state characteristic information according to an embodiment.
- FIG. 2 an example for explaining an operation in which a signal similarity for each specific section is determined when a user quickly stands up from a chair and then performs an operation to sit down again within 3 seconds is shown.
- the user's movement occurs from t 4 to t 6
- multi-path channel state characteristic information having the same or similar value received between t 4 and t 6 is shown as a block indicated by hatching at the bottom of FIG. It can be.
- window length eg, 4 seconds
- the signal similarity for each specific section determined at t o may be calculated based on multipath channel state characteristic information received from t -3 to t 0 . Since there is no user movement between t -3 and t 0 , since multipath channel state characteristic information having independent and random values is received, the signal similarity for each specific section is a predetermined threshold (signal similarity graph for each specific section in FIG. 2 can have a smaller value than the dotted line parallel to the x-axis in . On the other hand, since the signal similarity for each specific section of t -1 to t 2 is calculated partially based on multipath channel state characteristic information having the same or similar value, it may have a value higher than the threshold value. There may be a characteristic that a section in which the signal similarity for each specific section has a higher value than the threshold is longer than the section in which the user actually moved.
- a minimum length exists in a section in which the signal similarity for each specific section has a value higher than the threshold value, and the minimum length may be greater than the signal similarity window length for each specific section.
- a minimum required time eg, 3 seconds
- a section with a value higher than the threshold value for signal similarity for each section uses a longer characteristic, so that if the signal similarity for each section is greater than the threshold value, If a section with a high value is shorter than the minimum required time described above, it may be determined that the signal similarity pattern for each specific section is not caused by the user's motion. In this case, it may be determined that motion detection based on the corresponding multi-path channel state characteristic information is impossible.
- FIG. 3 is a diagram for explaining a general signal similarity for each specific section according to an embodiment.
- FIG. 3 an example of a signal similarity pattern for each specific section when normal motion detection is possible based on multi-path channel state characteristic information is shown. If normal motion detection is possible, it can be determined that user motion has occurred in a section (eg, T_move_1, T_move_2) that exceeds a predetermined threshold (indicated by a dotted line parallel to the x-axis in the signal similarity graph for each specific section in FIG. 3). there is.
- a section eg, T_move_1, T_move_2
- a predetermined threshold indicated by a dotted line parallel to the x-axis in the signal similarity graph for each specific section in FIG. 3
- T_observe represents the length of the entire interval for observing the signal similarity for each specific interval to determine whether motion detection is possible
- T_move_i represents the i-th interval length determined as motion occurrence
- T_move_total represents motion occurrence.
- N represents the number of intervals determined to have motion
- Max_i may represent the maximum signal similarity value for each specific interval in the i-th interval determined to have motion
- T_no_move_j represents the length of the j-th interval determined as no motion
- M represents the number of intervals determined as no motion
- Min_j may represent the minimum signal similarity value for each specific interval in the j-th interval determined as no motion.
- the unit of the interval length may be, for example, second, but is not limited to the above example.
- FIG. 4 is a diagram for explaining signal similarity for each specific section when motion detection is possible according to an embodiment.
- FIG. 4 an example of a signal similarity pattern for each specific section based on an actual user movement is shown.
- the signal similarity for each specific section in the first section 410 and the second section 420 has a value exceeding the threshold value, it can be determined that the user movement has occurred in the corresponding section.
- the shape of the signal similarity for each specific section shown in the first section 410 and the second section 420 is different from each other, and the lengths of the first section 410 and the second section 420 are also different. It can be seen that the periodicity is also small.
- the electronic device may determine whether a user motion has occurred by comprehensively considering a signal similarity pattern for each specific section based on at least one of a waveform, section length, and periodicity.
- the electronic device may determine that motion detection based on the corresponding multi-path channel state characteristic information is impossible. there is. This will be described in detail with reference to FIG. 5 .
- 5 is a diagram for explaining signal similarity for each specific section when motion detection is impossible according to an embodiment.
- multi-path channel state characteristic information has independent random values when there is no user movement, whereas when there is user movement, there is no characteristic having the same or similar value, so the multi-path channel state characteristic information is weak.
- An example of signal similarity for each specific section when motion detection based on information is impossible is shown.
- the signal similarity for each specific section of FIG. 5 may have a preset length for observation to determine whether motion detection is possible.
- waveforms similar to each other may repeatedly appear at regular intervals in sections 510 to 550 that are equal to or greater than a predetermined threshold, regardless of whether there is motion or not.
- the signal similarity for each specific section as shown in FIG. 5 intentionally or forcibly changes the multi-path channel state characteristic information in order to increase the performance of the access point (eg, Wi-Fi transmission/reception efficiency).
- the signal similarity for each specific section which measures the similarity of , shows a form in which the signal similarity increases periodically and has similarity even during the holding time, and / or the environment in which the multi-path channel state characteristic information is propagated, reflection of the radio signal easily occurs. may appear in the case of
- the electronic device provides multi-path channel state characteristic information based on a difference between the average length of the intervals 510 to 550 and the length of any one of the intervals 510 to 550 maintained above a predetermined threshold in the signal similarity for each specific interval. It is possible to determine whether motion detection is possible based on . For example, the electronic device may determine that motion detection is impossible when Equation 1 below is satisfied.
- T_move_average represents the average length of sections 510 to 550 with motion
- alpha_i may be a second threshold set to determine whether motion detection is possible.
- alpha_i may vary depending on the type of motion and the wireless environment including one or more of the structure and material of a space through which a wireless signal is transmitted, and the location of an access point.
- T_move_i and T_move_average have similar values
- the right term of Equation 1 may have 0 or a value more close to 0.
- the right term of Equation 1 has a value lower than alpha_i to satisfy Equation 1, and the electronic device may determine that motion detection based on the corresponding multi-path channel state characteristic information is impossible.
- the electronic device may determine that motion detection based on the corresponding multi-path channel state characteristic information is possible.
- the electronic device obtains a value based on the difference between the average length of the intervals 510 to 550 and the length of any one of the intervals 510 to 550 maintained above a predetermined threshold in the signal similarity for each specific interval. In response to a case below the second threshold, it may be determined that motion detection based on multipath channel state characteristic information is impossible. In addition, even if Equation 1 is not followed, the electronic device may determine whether motion detection is possible based on the similarity between the patterns of sections 510 to 550 maintained above a predetermined threshold in the signal similarity for each specific section. . For example, the electronic device may determine that motion detection is impossible if the similarity between the patterns of the sections 510 to 550 satisfies a predetermined condition.
- the electronic device may determine whether motion detection is possible based on whether the length of any one of sections 510 to 550 maintained above a predetermined threshold in signal similarity for each specific section is less than a third threshold. , and this condition can be expressed by Equation 2 below.
- T_move_critical represents a third threshold corresponding to the minimum length of a section in which the signal similarity for each specific section is maintained above a predetermined threshold when an actual movement occurs, and the structure and material of the space through which the radio signal is transmitted. , may vary depending on the wireless environment including one or more of the location of the access point and the type of movement.
- the third threshold is set based on the characteristic that the signal similarity for each specific section does not immediately decrease to the lowest value even if the motion disappears. It may be larger than the window length applied to the star signal similarity calculation.
- the third threshold may be greater than the motion maintenance time or minimum motion time.
- User movements in daily life may include, for example, entering/exiting a space, standing/sitting, and position movement, but are not limited to the above examples.
- the third threshold may be determined based on a minimum detection time appearing in signal similarity for each specific section as motion generation affects multi-path channel state characteristic information. Summarizing the three factors influencing the third threshold described above, the third threshold may be determined as "length of signal similarity window for each specific section + minimum motion time - minimum detection time".
- the electronic device may determine whether motion detection based on the multipath channel state characteristic information is possible using a characteristic having a length of T_move_i greater than or equal to T_move_critical. For example, the electronic device may determine that motion detection is impossible if Equation 2 is satisfied, and may determine that motion detection is possible if Equation 2 is unsatisfactory.
- 6 and 7 are diagrams for explaining an operation of determining whether motion detection is possible based on an AP output adjustment time point and a signal similarity window length for each specific section according to an embodiment.
- FIG. 6 an example of signal similarity for each specific section when the output adjustment period of the access point is longer than the window length for motion detection (eg, the signal similarity window length for each specific section in FIG. 2) is shown.
- the signal similarity for each specific section may be higher than the predetermined threshold, but as time goes by, the signal similarity for each specific section gradually decreases.
- a section higher than a predetermined threshold and a section lower than the predetermined threshold may be repeated.
- the signal similarity for each specific period may include a period 710 in which a value higher than a predetermined threshold value is continuously maintained.
- the electronic device may determine that motion detection based on the corresponding multi-path channel state characteristic information is impossible if the signal similarity for each specific section is continuously maintained higher than the fourth predetermined threshold for a predetermined observation time.
- the fourth threshold may be experimentally determined, and may include, for example, a value of 0.3 to 0.5.
- the period of multi-path channel state characteristic information temporarily transmitted from the access point to the electronic device. may become longer, which may lead to an increase in the collection period of multipath channel state characteristic information for motion determination.
- a pattern of signal similarity for each specific section may appear regardless of whether or not there is an actual motion.
- the electronic device determines that the access point is in an abnormal state and determines that motion detection is impossible.
- the threshold interval may be determined to be 1.5 times the reference interval of the multi-path channel state characteristic information received from the access point in normal state, but is not limited to the above example.
- FIG. 8 is a block diagram of an electronic device according to an exemplary embodiment.
- 9 is a detailed block configuration diagram of an electronic device according to an exemplary embodiment.
- an electronic device 800 may include a memory 820, a processor 830, a communication unit 850, and a sensing unit 891.
- a memory 820 may include a central processing unit 830, a central processing unit 830, and a central processing unit 891.
- a processor 830 may perform arithmetic and logic operations.
- a communication unit 850 may include a central processing unit 890.
- a sensing unit 891 may include a memory 820, a processor 830, a communication unit 850, and a sensing unit 891.
- the electronic device 800 may be implemented with more components than those illustrated, or the electronic device 800 may be implemented with fewer components.
- the electronic device 800 includes a display 810 in addition to a memory 820, a processor 830, a communication unit 850, and a sensing unit 891.
- a tuner unit 840, a sensing unit 860, an input/output unit 870, a video processing unit 880, an audio processing unit 815, an audio output unit 826, and a power supply unit 890 may be further included. .
- the processor 830 controls overall operation of the electronic device 800 and signal flow between internal components of the electronic device 800 and processes data.
- the processor 830 may execute an operation system (OS) and various applications stored in the memory 820 when there is a user's input or when a pre-set and stored condition is satisfied.
- OS operation system
- the processor 830 stores signals or data input from the outside of the electronic device 800 or controls the RAM used as a storage area corresponding to various tasks performed in the electronic device 800 and the electronic device 800. It may include a ROM and a processor in which a control program for the control program is stored.
- the processor 830 may include a graphic processing unit (not shown) for graphic processing corresponding to video.
- the processor 830 may be implemented as a system on chip (SoC) in which a core (not shown) and a GPU (not shown) are integrated.
- SoC system on chip
- the processor 830 may include a single core, a dual core, a triple core, a quad core, and multiple cores thereof.
- the processor 830 may include a plurality of processors.
- the processor may be implemented as a main processor (not shown) and a sub processor (not shown) operating in a sleep mode.
- the processor 830 by executing one or more instructions stored in the memory 820, via the sensing unit 891 including the at least one sensor, at least one sensor corresponding to the at least one sensor.
- a sensing value can be detected.
- the processor 830 executes one or more instructions stored in the memory 820, and when it is determined that the detected at least one sensing value is equal to or greater than a preset threshold value, the mobile device 1000 It may be determined that the electronic device 800 has been touched.
- the processor 830 compares at least one detected sensing value with a sensing value of the mobile device received from the mobile device 1000 by executing one or more instructions stored in the memory 820. By doing so, it may be determined that the mobile device 1000 has touched the electronic device 800.
- the processor 830 may request identification information of the mobile device 1000 and receive the identification information of the mobile device 1000 by executing one or more instructions stored in the memory 820. can Also, the processor 830 can confirm that the mobile device 1000 is a device pre-registered in the electronic device 800 based on the identification information of the mobile device 1000 .
- the processor 830 executes one or more instructions stored in the memory 820 so that the mobile device 1000 touches the electronic device 800 based on at least one sensing value.
- a touch area can be determined.
- the processor 830 compares at least one sensing value detected corresponding to at least one sensor by executing one or more instructions stored in the memory 820, and based on the comparison result , One or more sensors determined to be disposed close to a point where the mobile device 1000 is touched on the electronic device 800 may be determined. Also, the processor 830 may determine the touch area based on the determined one or more sensors.
- the processor 830 may receive state information about an operation being executed in the mobile device 1000 from the mobile device 1000 through the communication unit 850 .
- the processor 830 executes one or more instructions stored in the memory 820, based on the received state information of the mobile device 1000, to set a preset corresponding to the determined touch area. function can be performed.
- the processor 830 executes one or more instructions stored in the memory 820 so that the mobile device 1000 touches the electronic device 800 based on at least one sensing value. The number of touches can be determined.
- the processor 830 may perform a preset function corresponding to the number of touches by executing one or more instructions stored in the memory 820 .
- the processor 830 may preset a function corresponding to at least one touch area on the electronic device 800 based on a user input by executing one or more instructions stored in the memory 820.
- the processor 830 may preset a function corresponding to the number of touches performed on at least one touch area on the electronic device 800 based on a user input by executing one or more instructions stored in the memory 820. there is.
- the memory 820 may store various data, programs, or applications for driving and controlling the electronic device 800 under the control of the processor 830 .
- the memory 820 includes a video processing unit 880, a display 810, an audio processing unit 815, an audio output unit 826, a power supply unit 890, a tuner unit 840, a communication unit 850, and a sensing unit 860. , input/output signals or data corresponding to driving of the input/output unit 870 may be stored.
- the memory 820 includes an operating system 821 for controlling the electronic device 800 and the processor 830, an application 822 initially provided by a manufacturer or downloaded from the outside, a graphical user interface (GUI) related to the application, and a GUI.
- GUI graphical user interface
- Objects eg, image text, icons, buttons, etc.
- user information e.g., documents, databases, or related data may be stored to provide.
- the memory 820 receives an input signal from a remote control device (not shown) and controls a channel corresponding to the input signal accordingly, or a channel scroll user interface mode when the input signal corresponds to a predetermined input.
- a TV viewer module 823 including one or more instructions for entering
- a character recognition module 824 including one or more instructions for recognizing information from content received from an external device (not shown)
- MBR module 825 containing one or more instructions for channel control from
- the memory 820 includes ROM, RAM, or a memory card (eg, micro SD card, USB memory, not shown) mounted in the electronic device 800 . Also, the memory 820 may include a non-volatile memory, a volatile memory, a hard disk drive (HDD), or a solid state drive (SSD).
- ROM read only memory
- RAM random access memory
- a memory card eg, micro SD card, USB memory, not shown
- the memory 820 may include a non-volatile memory, a volatile memory, a hard disk drive (HDD), or a solid state drive (SSD).
- HDD hard disk drive
- SSD solid state drive
- the memory 820 is a flash memory type, a hard disk type, a multimedia card micro type, or a card type memory (eg SD or XD memory, etc.), RAM (RAM, Random Access Memory), SRAM (Static Random Access Memory), ROM (ROM, Read-Only Memory), EEPROM (Electrically Erasable Programmable Read-Only Memory), PROM (Programmable Read-Only Memory) ), a magnetic memory, a magnetic disk, and an optical disk may include at least one type of storage medium.
- the display 810 displays a video included in a broadcast signal received through the tuner unit 840 on the screen under the control of the processor 830 . Also, the display 810 may display content (eg, video) input through the communication unit 850 or the input/output unit 870 . The display 810 may output an image stored in the memory 820 under the control of the processor 830 .
- content eg, video
- the display 810 may output an image stored in the memory 820 under the control of the processor 830 .
- the display 810 converts the image signal, data signal, OSD signal, control signal, etc. processed by the processor 830 to generate a driving signal.
- the display 810 may be implemented with a plasma display panel (PDP), a liquid crystal display (LCD), an organic light emitting diode (OLED), a cathode ray tube (CRT), a flexible display, and the like, and also 3 It can be implemented as a 3D display.
- the display 810 may be configured as a touch screen and used as an input device other than an output device.
- the tuner unit 840 selects only the frequency of a channel to be received by the electronic device 800 from many radio wave components through amplification, mixing, resonance, etc. of a broadcast signal received by wire or wirelessly. It can be selected by tuning.
- the broadcast signal includes audio, video, and additional information (eg, Electronic Program Guide (EPG)).
- EPG Electronic Program Guide
- the tuner unit 840 performs a control signal received from a remote control device (not shown) (eg, a channel number input, a channel up-down input, and a channel input on an EPG screen) according to a user input.
- a remote control device eg, a channel number input, a channel up-down input, and a channel input on an EPG screen
- a broadcast signal can be received in a frequency band corresponding to the channel number.
- the tuner unit 840 may receive broadcast signals from various sources such as terrestrial broadcasting, cable broadcasting, satellite broadcasting, and Internet broadcasting.
- the tuner unit 840 may receive a broadcasting signal from a source such as analog broadcasting or digital broadcasting.
- the broadcast signal received through the tuner unit 840 is decoded (eg, audio decoding, video decoding, or additional information decoding) and separated into audio, video, and/or additional information. Separated audio, video and/or additional information may be stored in the memory 820 under the control of the processor 830 .
- the tuner unit 840 of the electronic device 800 may be one or plural.
- the tuner unit 840 is implemented as an all-in-one with the electronic device 800, or a separate device having a tuner unit electrically connected to the electronic device 800 (for example, a set-top box). -top box, not shown), and a tuner unit (not shown) connected to the input/output unit 870).
- the communication unit 850 may connect the electronic device 800 with an external device (eg, an audio device) (not shown) under the control of the processor 830 .
- the processor 830 may transmit/receive content to/from an external device (not shown) connected through the communication unit 850, download an application from the external device (not shown), or perform web browsing.
- the communication unit 850 may include one of a wireless LAN 851, Bluetooth 852, and wired Ethernet 153 corresponding to the performance and structure of the electronic device 800. Also, the communication unit 850 may include a combination of wireless LAN 851, Bluetooth 852, and wired Ethernet 153.
- the communication unit 850 may receive a control signal from a remote control device (not shown) under control of the processor 830 .
- the control signal may be implemented as a Bluetooth type, an RF signal type, or a Wi-Fi type.
- the communication unit 850 may further include other short-range communication (eg, near field communication (NFC), not shown) and bluetooth low energy (BLE) other than Bluetooth.
- NFC near field communication
- BLE bluetooth low energy
- the sensing unit 860 detects a user's voice, a user's video, or a user's interaction, and may include a microphone 861, a camera unit 862, and a light receiving unit 863.
- the microphone 861 receives the user's utterance.
- the microphone 861 may convert the received voice into an electrical signal and output it to the processor 830 .
- the user's voice may include, for example, a voice corresponding to a menu or function of the electronic device 800 .
- the camera unit 862 may obtain an image bezel such as a still image or a moving image.
- An image captured through the image sensor may be processed through the processor 830 or a separate image processing unit (not shown).
- the image bezel processed by the camera unit 862 may be stored in the memory 820 or transmitted to the outside through the communication unit 850 .
- Two or more camera units 862 may be provided according to configuration aspects of the electronic device 800 .
- the light receiving unit 863 receives an optical signal (including a control signal) received from an external remote control device (not shown).
- the light receiving unit 863 may receive an optical signal corresponding to a user input (eg, touch, pressure, touch gesture, voice, or motion) from a remote control device (not shown).
- a control signal may be extracted from the received optical signal under the control of the processor 830 .
- the light receiving unit 863 may receive a control signal corresponding to a channel up/down button for changing a channel from a remote control device (not shown).
- the input/output unit 870 includes video (eg, video), audio (eg, voice, music, etc.) and additional information (eg, video, etc.) from the outside of the electronic device 800 under the control of the processor 830. For example, EPG, etc.) and the like are received.
- the input/output unit 870 includes at least one of a High-Definition Multimedia Interface port (HDMI) port 871, a component jack 872, a PC port 873, and a USB port 874. can do.
- the input/output unit 870 may include a combination of at least one of an HDMI port 871, a component jack 872, a PC port 873, and a USB port 874.
- An external video providing device (not shown) may be connected through the HDMI port 871.
- the video processor 880 processes video data received by the electronic device 800 .
- the video processing unit 880 may perform various image processing such as decoding, scaling, noise filtering, bezel rate conversion, and resolution conversion on video data.
- the graphic processing unit 881 uses a calculation unit (not shown) and a rendering unit (not shown) to create a screen including various objects such as icons, images, and text.
- the calculation unit (not shown) calculates attribute values such as coordinate values, shape, size, color, etc. of each object to be displayed according to the layout of the screen using the user input sensed through the sensor 860 .
- the rendering unit (not shown) creates screens of various layouts including objects based on the attribute values calculated by the calculation unit (not shown).
- the screen created by the rendering unit (not shown) is displayed within the display area of the display 810 .
- the audio processing unit 815 processes audio data.
- the audio processing unit 815 may perform various processes such as decoding or amplifying audio data and filtering noise. Meanwhile, the audio processing unit 815 may include a plurality of audio processing modules to process audio corresponding to a plurality of contents.
- the audio output unit 826 outputs audio included in the broadcast signal received through the tuner unit 840 under the control of the processor 830 .
- the audio output unit 826 may output audio (eg, voice, sound) input through the communication unit 850 or the input/output unit 870 .
- the audio output unit 826 may output audio stored in the memory 820 under the control of the processor 830 .
- the audio output unit 826 may include at least one of a speaker 827, a headphone output terminal 828, and a Sony/Philips Digital Interface (S/PDIF) output terminal 829.
- the audio output unit 826 may include a combination of at least one of a speaker 827, a headphone output terminal 828, and a S/PDIF output terminal 829.
- the power supply unit 890 supplies power input from an external power source to components inside the electronic device 800 under the control of the processor 830 .
- the power supply unit 890 may supply power output from one or more batteries (not shown) located inside the electronic device 800 to internal components under the control of the processor 830 .
- the sensing unit 891 may detect a state of the electronic device 800 or a state around the electronic device 800 and transmit the sensed information to the processor 830 .
- the sensing unit 891 includes a magnetic sensor 892, an acceleration sensor 893, a temperature/humidity sensor 894, an infrared sensor 895, a gyroscope sensor 896, and a position sensor. (eg, a GPS) 897, an air pressure sensor 898, a proximity sensor 899, and an RGB sensor (illuminance sensor) 1001, but may include at least one, but is not limited thereto. Since a person skilled in the art can intuitively infer the function of each sensor from its name, a detailed description thereof will be omitted.
- the sensing unit 891 may detect an external impact applied to the electronic device 800 .
- the sensing unit 891 of the electronic device 800 may output a sensed value.
- the electronic device 800 including the display 810 may be electrically connected to a separate external device (eg, a set-top box, not shown) including the tuner unit 840 .
- a separate external device eg, a set-top box, not shown
- the electronic device 800 may be implemented as an analog TV, digital TV, 3D-TV, smart TV, LED TV, OLED TV, plasma TV, monitor, etc., but it is common knowledge in the art that it is not limited thereto. It will be easily understood by those who have.
- the block diagram of the illustrated electronic device 800 is a block diagram for one embodiment.
- Each component of the block diagram may be integrated, added, or omitted according to specifications of the electronic device 800 that is actually implemented. That is, if necessary, two or more components may be combined into one component, or one component may be subdivided into two or more components.
- the functions performed in each block are for explaining the embodiments, and the specific operation or device does not limit the scope of the present invention.
- the electronic device 800 includes a memory 820 including at least one executable instruction and a processor 830 executing at least one instruction stored in the memory 820, and the processor 830 ) obtains multi-path channel state characteristic information based on a radio signal received from an access point communicating with an electronic device, calculates signal similarity for each specific section based on the multi-path channel state characteristic information, and calculates a specific section It is possible to determine whether motion detection based on multi-path channel state characteristic information is possible based on the pattern of signal similarity per star.
- the processor 830 detects motion based on multi-path channel state characteristic information in response to a case where it is not determined that the pattern of signal similarity for each specific section is caused by the user's motion. can be judged to be impossible.
- the processor 830 detects motion based on a difference between a length of any one of sections maintained above a predetermined threshold in signal similarity for each specific section and an average length of the sections. It can be judged whether it is possible or not.
- the processor 830 determines a value based on a difference between the length of any one of the sections maintained above a predetermined threshold value in the signal similarity for each specific section and the average length of the sections. In response to a case below the threshold, it may be determined that motion detection based on multi-path channel state characteristic information is impossible.
- the processor 830 may determine whether motion detection is possible based on the similarity between patterns of sections maintained above a predetermined threshold in signal similarity for each specific section.
- the processor 830 detects motion based on whether the length of any one of the sections maintained above a predetermined threshold in the signal similarity for each specific section is less than a third threshold. It can be judged whether it is possible or not.
- the third threshold may be determined based on a minimum length of a section in which the signal similarity for each specific section is maintained above the threshold due to a user's motion.
- the third threshold in the electronic device 800 determines the user's movement through a window length for calculating the signal similarity for each specific section, a minimum time for the user's movement that affects the signal similarity for each specific section, and a pattern. It may be determined based on the minimum sensing time required for sensing.
- the processor 830 determines whether motion detection is possible based on whether a length of a section maintained at a predetermined fourth threshold or more in the signal similarity for each specific section is equal to or greater than a fifth threshold. can determine whether
- the processor 830 may determine whether motion detection is possible based on whether an interval at which multipath channel state characteristic information is received from the access point is greater than or equal to a threshold interval. .
- the processor 830 in response to determining that motion detection based on the multi-path channel state characteristic information is impossible, based on the multi-path channel state characteristic information received from the access point Motion detection can be stopped.
- the electronic device 800 is a mobile phone, smart phone, PDA, netbook, tablet computer, laptop computer, mobile device, smart watch, smart band, smart glasses, wearable device, desktop, computing device, television, It may be any one of a set-top box, a refrigerator, home appliances, a door lock, and a security device.
- FIG. 10 is a block diagram of a mobile device according to an exemplary embodiment.
- the mobile device 1000 may include at least some of the device configurations disclosed in FIGS. 8 and 9 .
- a mobile device 1000 may include a display 1010, a memory 1020, a communication unit 1050, a sensing unit 1091, and a processor 1030.
- a display 1010 may include a display 1010, a memory 1020, a communication unit 1050, a sensing unit 1091, and a processor 1030.
- the mobile device 1000 may be implemented with more components than those shown in FIG. 10 , or the mobile device 1000 may be implemented with fewer components than those shown in FIG. 10 .
- the display 1010 of the mobile device 1000 converts an image signal, a data signal, an OSD signal, a control signal, and the like processed by the processor 1030 to generate a driving signal.
- the display 1010 may display content (eg, video) input through the communication unit 1050 or an input/output unit (not shown).
- the display 1010 may output an image stored in the memory 1020 under the control of the processor 1030 .
- the memory 1020 of the mobile device 1000 may store a program for processing and controlling the processor 1030, and input to or output from the mobile device 1000. You can also store data.
- the processor 1030 typically controls overall operations of the mobile device 1000 .
- the processor 1030 may generally control the sensing unit 1091 and the communication unit 1050 by executing programs stored in the memory 1020 .
- the processor 1030 may control the operation of the mobile device 1000 in order to perform the functions of the mobile device 1000 illustrated in FIGS. 1 to 13 .
- the processor 1030 may be composed of one or a plurality of processors.
- the one or more processors may be a general-purpose processor such as a CPU, AP, digital signal processor (DSP), or the like, or a graphics-only processor such as a GPU or a vision processing unit (VPU).
- DSP digital signal processor
- One or more processors control input data to be processed according to predefined operation rules stored in a memory.
- the processor 1030 may receive a radio signal transmitted by the electronic device 800 through the communication unit 1050 .
- the processor 1030 may receive a request for identification information of the mobile device from the electronic device 800 through the communication unit 1050 .
- the processor 1030 may control identification information of the mobile device to be transmitted to the electronic device 800 through the communication unit 1050 .
- the processor 1030 may control the sensing value detected by the sensing unit 1091 to be transmitted to the electronic device 800 through the communication unit 1050 .
- the processor 1030 may receive a request for status information about an operation being executed in the mobile device 1000 through the communication unit 1050 .
- the processor 1030 may generate state information about an operation being executed.
- the processor 1030 may control transmission of state information about an operation being executed to the electronic device 800 through the communication unit 1050 .
- the memory 1020 may be a flash memory type, a hard disk type, a multimedia card micro type, or a card type memory (eg SD or XD memory).
- RAM Random Access Memory
- SRAM Static Random Access Memory
- ROM Read-Only Memory
- EEPROM Electrically Erasable Programmable Read-Only Memory
- PROM Programmable Read-Only Memory
- magnetic memory It may include a storage medium of at least one type of a magnetic disk and an optical disk.
- the communication unit 1050 may include one or more components that allow the mobile device 1000 to communicate with the outside.
- the communication unit 1050 may include a short-distance communication unit (not shown), a mobile communication unit (not shown), and a broadcast reception unit (not shown).
- the short-range wireless communication unit includes a Bluetooth communication unit, a Bluetooth Low Energy (BLE) communication unit, a Near Field Communication unit (WLAN) communication unit, a Zigbee communication unit, an infrared (IrDA) It may include a Data Association (Data Association) communication unit, a Wi-Fi Direct (WFD) communication unit, an ultra wideband (UWB) communication unit, an Ant+ communication unit, etc., but is not limited thereto.
- BLE Bluetooth Low Energy
- WLAN Near Field Communication unit
- Zigbee communication unit Zigbee communication unit
- IrDA infrared
- Data Association Data Association
- WFD Wi-Fi Direct
- UWB ultra wideband
- Ant+ communication unit etc., but is not limited thereto.
- the mobile communication unit transmits and receives radio signals with at least one of a base station, an external terminal, and a server on a mobile communication network.
- the radio signal may include a voice call signal, a video call signal, or various types of data according to text/multimedia message transmission/reception.
- the broadcast reception unit receives a broadcast signal and/or broadcast-related information from the outside through a broadcast channel.
- Broadcast channels may include satellite channels and terrestrial channels.
- the mobile device 1000 may not include a broadcast reception unit.
- the sensing unit 1091 may detect a state of the mobile device 1000 or a state around the mobile device 1000 and transmit the sensed information to the processor 1030 .
- the sensing unit 1091 includes a magnetic sensor, an acceleration sensor, a temperature/humidity sensor, an infrared sensor, a gyroscope sensor, a location sensor (eg, GPS), an illuminance sensor, a proximity sensor, and an RGB sensor.
- illumination sensor may include at least one, but is not limited thereto. Since a person skilled in the art can intuitively infer the function of each sensor from its name, a detailed description thereof will be omitted.
- the sensing unit 1091 may detect an external shock applied to the mobile device 1000 .
- an acceleration sensor built into the mobile device 1000 may detect an impact caused by a touch operation with the electronic device 800. Also, an acceleration sensor built into the mobile device 1000 may sense a moving speed and acceleration of the mobile device 1000 .
- the display 1010, the memory 1020, the communication unit 1050, the sensing unit 1091, and the processor 1030 of the mobile device 1000 are the display 810 of the electronic device 800 described with reference to FIGS. 8 and 9 . ), the memory 820, the communication unit 850, the sensing unit 891, and the processor 830 may be described.
- FIG. 11 is a diagram for explaining a method of operating an electronic device according to an exemplary embodiment.
- each operation may be performed sequentially, but not necessarily sequentially.
- the order of each operation may be changed, or at least two operations may be performed in parallel.
- Operations 1110 to 1120 may be performed by at least one component of the electronic device.
- the electronic device may receive multipath channel state characteristic information from an access point communicating with the electronic device.
- the electronic device detects motion based on the multi-path channel state characteristic information based on whether the pattern of signal similarity for each specific section determined based on the multi-path channel state characteristic information is determined to be caused by the user's motion. It can be judged whether it is possible or not.
- the electronic device may determine that motion detection based on multi-path channel state characteristic information is impossible in response to a case where it is not determined that the signal similarity pattern for each specific section is caused by the user's motion.
- the electronic device may stop motion detection based on the multipath channel state characteristic information received from the access point.
- a method of operating an electronic device includes an operation of acquiring multipath channel state characteristic information based on a radio signal received from an access point communicating with the electronic device, and determining based on the multipath channel state characteristic information.
- An operation of determining whether motion detection based on multipath channel state characteristic information is possible based on whether the pattern of signal similarity for each specific section is determined to be caused by the user's motion may be included.
- the operation determined in the operating method of the electronic device is impossible to detect motion based on multi-path channel state characteristic information in response to a case in which the pattern of signal similarity for each specific section is not determined to be caused by the user's motion. can be judged to be
- the operation determined in the operating method of the electronic device is motion detection based on a difference between the length of any one of the sections maintained above a predetermined threshold in the signal similarity for each specific section and the average length of the sections. You can judge whether it is possible or not.
- the value based on the difference between the length of any one of the sections maintained above a predetermined threshold in the signal similarity for each section and the average length of the sections is the second threshold. In response to the case of less than, it may be determined that motion detection based on multi-path channel state characteristic information is impossible.
- the operation determined in the operating method of the electronic device may determine whether motion detection is possible based on the similarity between patterns of sections maintained above a predetermined threshold in the signal similarity for each specific section.
- the operation determined in the operating method of the electronic device is motion detection based on whether the length of any one of the sections maintained at a predetermined threshold value or more in the signal similarity for each specific section is less than the third threshold value. You can judge whether it is possible or not.
- the third threshold may be determined based on a minimum length of a section in which the signal similarity for each specific section is maintained above the threshold due to a user's movement.
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Abstract
Description
Claims (15)
- 전자 장치에 있어서,실행 가능한 적어도 하나의 명령어를 포함하는 메모리; 및상기 메모리에 저장된 적어도 하나의 명령어를 실행하는 프로세서를 포함하고,상기 프로세서는,상기 전자 장치와 통신을 수행하는 액세스 포인트(access point; AP)로부터 수신되는 무선 신호에 기초하여 멀티 패스 채널 상태 특성 정보를 획득하고,상기 멀티 패스 채널 상태 특성 정보에 기반하여 특정 구간별 신호 유사도를 계산하고,상기 특정 구간별 신호 유사도의 패턴에 기초하여 상기 멀티 패스 채널 상태 특성 정보에 기초한 움직임 감지가 가능한지 여부를 판단하는,전자 장치.
- 제1항에 있어서,상기 프로세서는상기 특정 구간별 신호 유사도의 패턴이 사용자의 움직임에 의한 것으로 판단되지 않는 경우에 응답하여, 상기 멀티 패스 채널 상태 특성 정보에 기초한 상기 움직임 감지가 불가능한 것으로 판단하는,전자 장치.
- 제1항에 있어서,상기 프로세서는상기 특정 구간별 신호 유사도에서 미리 정해진 임계치 이상으로 유지되는 구간들 중 어느 하나의 길이와 상기 구간들의 평균 길이 간 차이에 기초하여, 상기 움직임 감지가 가능한지 여부를 판단하는,전자 장치.
- 제3항에 있어서,상기 프로세서는상기 특정 구간별 신호 유사도에서 미리 정해진 임계치 이상으로 유지되는 구간들 중 어느 하나의 길이와 상기 구간들의 평균 길이 간 차이에 기초한 값이 제2 임계치 미만인 경우에 응답하여, 상기 멀티 패스 채널 상태 특성 정보에 기초한 상기 움직임 감지가 불가능한 것으로 판단하는,전자 장치.
- 제1항에 있어서,상기 프로세서는상기 특정 구간별 신호 유사도에서 미리 정해진 임계치 이상으로 유지되는 구간들의 패턴 간 유사도에 기초하여, 상기 움직임 감지가 가능한지 여부를 판단하는,전자 장치.
- 제1항에 있어서,상기 프로세서는상기 특정 구간별 신호 유사도에서 미리 정해진 임계치 이상으로 유지되는 구간들 중 어느 하나의 길이가 제3 임계치 미만인지 여부에 기초하여, 상기 움직임 감지가 가능한지 여부를 판단하는,전자 장치.
- 제6항에 있어서,상기 제3 임계치는상기 특정 구간별 신호 유사도가 사용자의 움직임에 의해 상기 임계치 이상으로 유지되는 구간의 최소 길이에 기초하여 결정되는,전자 장치.
- 제6항에 있어서,상기 제3 임계치는상기 특정 구간별 신호 유사도의 계산을 위한 윈도우 길이, 상기 특정 구간별 신호 유사도에 영향을 미치는 사용자의 움직임 최소 시간, 상기 특정 구간별 신호 유사도를 통해 사용자의 움직임을 감지하는 데 소요되는 최소 감지 시간에 기초하여 결정되는,전자 장치.
- 제1항에 있어서,상기 프로세서는상기 특정 구간별 신호 유사도에서 미리 정해진 제4 임계치 이상으로 유지되는 구간의 길이가 제 5 임계치 이상인지 여부에 기초하여, 상기 움직임 감지가 가능한지 여부를 판단하는,전자 장치.
- 제1항에 있어서,상기 프로세서는상기 액세스 포인트로부터 상기 멀티 패스 채널 상태 특성 정보가 수신되는 간격이 임계 간격 이상인지 여부에 기초하여, 상기 움직임 감지가 가능한지 여부를 판단하는,전자 장치.
- 제1항에 있어서,상기 프로세서는상기 멀티 패스 채널 상태 특성 정보에 기초한 움직임 감지가 불가능한 것으로 판단된 경우에 응답하여, 상기 액세스 포인트로부터 수신되는 멀티 패스 채널 상태 특성 정보에 기반한 움직임 감지를 중단하는,전자 장치.
- 제1항에 있어서,상기 전자 장치는이동 전화, 스마트 폰, PDA, 넷북, 태블릿 컴퓨터, 랩톱 컴퓨터, 모바일 장치, 스마트 워치, 스마트 밴드, 스마트 안경, 웨어러블 디바이스, 데스크탑, 컴퓨팅 장치, 텔레비전, 셋톱박스(set-top box), 냉장고, 가전 제품, 도어 락, 보안 장치 중 어느 하나인,전자 장치.
- 전자 장치의 동작 방법에 있어서,상기 전자 장치와 통신을 수행하는 액세스 포인트로부터 수신되는 무선 신호에 기초하여 멀티 패스 채널 상태 특성 정보를 획득하는 동작; 및상기 멀티 패스 채널 상태 특성 정보에 기반하여 결정된 특정 구간별 신호 유사도의 패턴이 사용자의 움직임에 의한 것으로 판단되는지 여부에 기초하여, 상기 멀티 패스 채널 상태 특성 정보에 기초한 움직임 감지가 가능한지 여부를 판단하는 동작을 포함하는전자 장치의 동작 방법.
- 제13항에 있어서,상기 판단하는 동작은상기 특정 구간별 신호 유사도의 패턴이 사용자의 움직임에 의한 것으로 판단되지 않는 경우에 응답하여, 상기 멀티 패스 채널 상태 특성 정보에 기초한 상기 움직임 감지가 불가능한 것으로 판단하는,전자 장치의 동작 방법.
- 제13항의 방법을 실행시키기 위한 프로그램이 기록된 컴퓨터 판독 가능한 저장 매체.
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EP4358439A1 (en) | 2024-04-24 |
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