TWI782568B - Capacitive fingerprint sensing device and information processing device using the same - Google Patents

Capacitive fingerprint sensing device and information processing device using the same Download PDF

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TWI782568B
TWI782568B TW110121079A TW110121079A TWI782568B TW I782568 B TWI782568 B TW I782568B TW 110121079 A TW110121079 A TW 110121079A TW 110121079 A TW110121079 A TW 110121079A TW I782568 B TWI782568 B TW I782568B
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capacitive fingerprint
fingerprint sensing
sensing device
gesture
gesture judgment
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TW202248834A (en
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張鵬飛
王帥
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大陸商北京集創北方科技股份有限公司
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Abstract

一種電容式指紋感測裝置，其具有：一電容陣列，用以提供一感測平面；一掃描電路，具有一定時掃描功能以週期性地自該電容陣列採集一幀電容數據；一數據處理單元，用以依一組態設定對各幀所述電容數據進行一分群處理以各獲得多個子群的感測值；以及一手勢判斷單元，用以對多幀所述電容數據之該些子群的所述感測值進行一手勢判斷運算以產生一手勢判斷結果。A capacitive fingerprint sensing device, which has: a capacitor array, used to provide a sensing plane; a scanning circuit, with a certain timing scanning function to periodically collect a frame of capacitance data from the capacitor array; a data processing unit , for performing a grouping process on the capacitance data of each frame according to a configuration setting to obtain sensing values of a plurality of subgroups; and a gesture judgment unit, used for the subgroups of the capacitance data of multiple frames A gesture judgment operation is performed on the sensed values to generate a gesture judgment result.

Description

電容式指紋感測裝置及利用其之資訊處理裝置Capacitive fingerprint sensing device and information processing device using it

本發明係有關於一種指紋感測裝置，特別是關於一種電容式指紋感測裝置。The invention relates to a fingerprint sensing device, in particular to a capacitive fingerprint sensing device.

移動設備是指可以在移動中使用的電腦設備，一般包括手機、筆記型電腦、平板電腦、手持式裝置等等。大部分情況下是指手機或者具有多種應用功能的智慧手機以及平板電腦。隨著網路技術朝著越來越寬頻化、智慧化的方向發展，移動設備已經成為人類生活、工作中不可或缺的一部分。Mobile devices refer to computer devices that can be used on the move, generally including mobile phones, notebook computers, tablet computers, handheld devices, and the like. In most cases, it refers to mobile phones or smartphones and tablets with various application functions. With the development of network technology becoming more and more broadband and intelligent, mobile devices have become an indispensable part of human life and work.

目前移動設備所使用的按鍵，通常只有單獨的一個功能，例如目前常用的僅供調整音量大小的音量調整鍵及控制電源開關的電源鍵等，導致使用按鍵數量較多，且在組裝上也較為麻煩且費時，成本也相對提高。再者，一般移動設備的外殼與各按鍵間會有空隙而易滲水，若直接在空隙處封膠，則會影響美觀，且有溢膠的問題。At present, the keys used in mobile devices usually have only one single function, such as the volume adjustment key used to adjust the volume and the power key used to control the power switch, etc., resulting in a large number of keys used and relatively difficult assembly. It is troublesome and time-consuming, and the cost is relatively high. Furthermore, generally, there are gaps between the shell of the mobile device and each button, which is prone to water seepage. If the glue is directly sealed in the gap, it will affect the appearance and cause the problem of glue overflow.

因此，本領域亟需一種新穎的整合式輸入按鍵裝置。Therefore, there is an urgent need in the art for a novel integrated input key device.

本發明之一目的在於揭露一種以單一按鍵的形式實現在一資訊處理裝置上之電容式指紋感測裝置，其可藉由內部的硬體電路將一電容陣列分群，並依多幀電容數據中之被觸摸群的變動狀況進行手勢判斷，以讓使用者除了能夠在該單一按鍵上進行指紋識別操作外，還可執行音量調整、電源開關、遊戲畫面中之物件操作或顯示畫面之翻頁操作，從而減少該資訊處理裝置之框體的開孔數量以提高防水性能。One purpose of the present invention is to disclose a capacitive fingerprint sensing device implemented on an information processing device in the form of a single button, which can group a capacitor array through an internal hardware circuit, and use multiple frames of capacitive data Gesture judgment is performed on the change status of the touched group, so that the user can not only perform fingerprint recognition operations on the single button, but also perform volume adjustment, power switch, object operation on the game screen, or page-turning operation on the display screen. , thereby reducing the number of openings in the frame of the information processing device to improve waterproof performance.

本發明之另一目的在於揭露一種電容式指紋感測裝置，其可藉由儲存一組態設定以決定所述分群的樣態。Another object of the present invention is to disclose a capacitive fingerprint sensing device, which can determine the state of the group by storing a configuration setting.

本發明之又一目的在於揭露一種電容式指紋感測裝置，其可藉由一外部處理器提供所述的組態設定。Another object of the present invention is to disclose a capacitive fingerprint sensing device, which can provide the above configuration settings through an external processor.

為達前述目的，一種電容式指紋感測裝置乃被提出，其具有：一電容陣列，用以提供一感測平面；一掃描電路，具有一定時掃描功能以週期性地自該電容陣列採集一幀電容數據；一數據處理單元，用以依一組態設定對各幀所述電容數據進行一分群處理以各獲得多個子群的感測值；以及一手勢判斷單元，用以對多幀所述電容數據之該些子群的所述感測值進行一手勢判斷運算以產生一手勢判斷結果。In order to achieve the aforementioned purpose, a capacitive fingerprint sensing device is proposed, which has: a capacitor array for providing a sensing plane; a scanning circuit with a certain timing scanning function to periodically collect a fingerprint from the capacitor array. Frame capacitance data; a data processing unit for grouping the capacitance data of each frame according to a configuration setting to obtain sensing values of multiple subgroups; and a gesture judgment unit for multi-frame A gesture judgment operation is performed on the sensing values of the subgroups of the capacitance data to generate a gesture judgment result.

在一實施例中，該電容式指紋感測裝置進一步包括一定時電路以驅使該掃描電路執行該定時掃描功能。In one embodiment, the capacitive fingerprint sensing device further includes a timing circuit to drive the scanning circuit to perform the timing scanning function.

在一實施例中，該電容式指紋感測裝置進一步包括一組態單元以提供該組態設定。In one embodiment, the capacitive fingerprint sensing device further includes a configuration unit to provide the configuration settings.

在一實施例中，該電容式指紋感測裝置進一步包括一傳輸介面以將該手勢判斷結果傳輸給一應用處理器。In one embodiment, the capacitive fingerprint sensing device further includes a transmission interface for transmitting the gesture determination result to an application processor.

在一實施例中，該傳輸介面包括至少一GPIO介面。In one embodiment, the transmission interface includes at least one GPIO interface.

在一實施例中，該傳輸介面包括一單線匯流排介面。In one embodiment, the transmission interface includes a single-wire bus interface.

在一實施例中，該應用處理器依該手勢判斷結果執行一對應的操作以提供一應用功能。In one embodiment, the application processor performs a corresponding operation according to the gesture determination result to provide an application function.

在可能的實施例中，該應用功能可為音量調整、電源開關、遊戲畫面中之物件操作或顯示畫面之翻頁操作。In a possible embodiment, the application function can be volume adjustment, power switch, object operation on the game screen or page turning operation on the display screen.

在可能的實施例中，該組態設定可預先儲存在該記憶單元中或由該應用處理器提供。In a possible embodiment, the configuration settings can be pre-stored in the memory unit or provided by the application processor.

在一實施例中，該電容式指紋感測裝置係一晶片裝置。In one embodiment, the capacitive fingerprint sensing device is a chip device.

另外，本發明亦提出一種資訊處理裝置，其具有一中央處理單元及如前述之電容式指紋感測裝置，其中，該中央處理單元係用以和該電容式指紋感測裝置通信。In addition, the present invention also proposes an information processing device, which has a central processing unit and the aforementioned capacitive fingerprint sensing device, wherein the central processing unit is used for communicating with the capacitive fingerprint sensing device.

在可能的實施例中，該資訊處理裝置可為一智慧型手機、一可攜式電腦、一車載電腦或一門禁裝置。In a possible embodiment, the information processing device can be a smart phone, a portable computer, a vehicle computer or an access control device.

為使　貴審查委員能進一步瞭解本發明之結構、特徵及其目的，茲附以圖式及較佳具體實施例之詳細說明後。In order to enable your examiners to further understand the structure, features and purpose of the present invention, drawings and detailed descriptions of preferred specific embodiments are hereby attached.

請參照圖1，其繪示本發明之電容式指紋感測裝置之一實施例之方塊圖，其中，該電容式指紋感測裝置係以單一按鍵的形式實現在一資訊處理裝置上。Please refer to FIG. 1 , which shows a block diagram of an embodiment of a capacitive fingerprint sensing device of the present invention, wherein the capacitive fingerprint sensing device is realized on an information processing device in the form of a single button.

如圖1所示，一電容式指紋感測裝置100，可為一晶片裝置，具有一電容陣列110、一掃描單元120、一手勢分析單元130及一傳輸介面140。As shown in FIG. 1 , a capacitive fingerprint sensing device 100 , which can be a chip device, has a capacitor array 110 , a scanning unit 120 , a gesture analysis unit 130 and a transmission interface 140 .

電容陣列110係用以提供一感測平面以供使用者進行觸摸操作。The capacitor array 110 is used to provide a sensing plane for users to perform touch operations.

掃描單元120具有一定時掃描功能以週期性地自電容陣列110採集一幀電容數據。The scanning unit 120 has a timing scanning function to periodically collect a frame of capacitance data from the capacitance array 110 .

手勢分析單元130係用以依一組態設定對各幀所述電容數據進行一分群處理以各獲得多個子群的感測值，並對多幀所述電容數據之該些子群的所述感測值進行一手勢判斷運算以產生一手勢判斷結果，其中，該手勢判斷運算包括對在多個時點所獲得的所述多個子群的所述感測值進行一變動趨勢偵測以感知一手勢操作(例如向上、向下，向左或向右滑動，或垂直按壓)。The gesture analysis unit 130 is used to perform a grouping process on the capacitive data of each frame according to a configuration setting so as to obtain sensing values of multiple subgroups, and perform a grouping process on the subgroups of the capacitive data in multiple frames. A gesture judgment operation is performed on the sensing value to generate a gesture judgment result, wherein the gesture judgment operation includes performing a trend detection on the sensing values of the plurality of subgroups obtained at multiple time points to perceive a Gestures (such as swiping up, down, left or right, or pressing vertically).

傳輸介面140，可包括至少一GPIO介面或一單線匯流排介面，係用以將該手勢判斷結果傳輸給一應用處理器200。The transmission interface 140 may include at least one GPIO interface or a single-wire bus interface, and is used to transmit the gesture determination result to an application processor 200 .

請參照圖2，其繪示圖1之電容式指紋感測裝置之掃描單元120和手勢分析單元130之一實施例之方塊圖。Please refer to FIG. 2 , which shows a block diagram of an embodiment of the scanning unit 120 and the gesture analysis unit 130 of the capacitive fingerprint sensing device shown in FIG. 1 .

如圖2所示，掃描單元120具有一掃描電路121和一定時電路122，手勢分析單元130具有一數據處理單元131、一組態單元132及一手勢判斷單元133。As shown in FIG. 2 , the scanning unit 120 has a scanning circuit 121 and a timing circuit 122 , and the gesture analysis unit 130 has a data processing unit 131 , a configuration unit 132 and a gesture determination unit 133 .

定時電路122係用以提供一週期性的脈衝信號以驅使該掃描電路121執行該定時掃描功能，從而週期性地自電容陣列110採集一幀電容數據。具體而言，定時電路122可由一計時器及一時鐘電路實現，其中，該計時器係依該時鐘電路所提供之一時鐘信號進行一計數操作，並在其計數值到達一預設值時產生所述的脈衝信號。The timing circuit 122 is used to provide a periodic pulse signal to drive the scanning circuit 121 to perform the timing scanning function, so as to periodically collect a frame of capacitance data from the capacitance array 110 . Specifically, the timing circuit 122 can be realized by a timer and a clock circuit, wherein the timer performs a counting operation according to a clock signal provided by the clock circuit, and generates a counting operation when the count value reaches a preset value. the pulse signal.

數據處理單元131係用以依組態單元132所提供之所述組態設定對各幀所述電容數據進行所述的分群處理以各獲得所述多個子群的所述感測值，其中，組態單元132具有一記憶單元以儲存所述組態設定，且所述組態設定可預先儲存在該記憶單元中或由應用處理器200提供。The data processing unit 131 is used to perform the grouping process on the capacitance data of each frame according to the configuration setting provided by the configuration unit 132 to obtain the sensing values of the plurality of subgroups, wherein, The configuration unit 132 has a memory unit to store the configuration settings, and the configuration settings can be pre-stored in the memory unit or provided by the application processor 200 .

手勢判斷單元133係用以對多幀所述電容數據之該些子群的所述感測值進行所述的手勢判斷運算以產生所述的手勢判斷結果，其中，該手勢判斷運算包括對在多個時點所獲得的所述多個子群的所述感測值進行一變動趨勢偵測以感知一手勢操作(例如向上、向下，向左或向右滑動，或垂直按壓)。另外，應用處理器200可依不同應用程式的需求調整所述組態設定的精度或解析度，以使手勢判斷單元133能夠依較粗的精度或解析度判斷一粗略的手勢，或依較細的精度或解析度判斷一細微的手勢。The gesture judging unit 133 is used to perform the gesture judging operation on the sensing values of the subgroups of the multiple frames of capacitance data to generate the gesture judging result, wherein the gesture judging operation includes The sensing values of the multiple subgroups obtained at multiple time points are subjected to a change trend detection to sense a gesture operation (such as sliding up, down, left or right, or vertical pressing). In addition, the application processor 200 can adjust the precision or resolution of the configuration settings according to the requirements of different applications, so that the gesture determination unit 133 can determine a rough gesture with a coarser precision or resolution, or with a finer resolution. The accuracy or resolution of judging a subtle gesture.

依上述的說明，本發明進一步揭示一種資訊處理裝置。According to the above description, the present invention further discloses an information processing device.

請參照圖3，其繪示本發明之資訊處理裝置之一實施例之方塊圖。Please refer to FIG. 3 , which shows a block diagram of an embodiment of the information processing device of the present invention.

如圖3所示，一資訊處理裝置300具有一中央處理單元310及一電容式指紋感測裝置320，其中，電容式感測裝置320係由電容式感測裝置100實現，且中央處理單元310包含該應用處理器200以與電容式感測裝置320通信。另外，資訊處理裝置300可為一智慧型手機、一可攜式電腦或一門禁裝置。As shown in Figure 3, an information processing device 300 has a central processing unit 310 and a capacitive fingerprint sensing device 320, wherein the capacitive sensing device 320 is realized by the capacitive sensing device 100, and the central processing unit 310 The application processor 200 is included to communicate with a capacitive sensing device 320 . In addition, the information processing device 300 can be a smart phone, a portable computer or an access control device.

藉由前述所揭露的設計，本發明乃具有以下的優點：With the design disclosed above, the present invention has the following advantages:

1.本發明的電容式指紋感測裝置能夠以單一按鍵的形式實現在一資訊處理裝置上，且其可藉由內部的硬體電路將一電容陣列分群，並依多幀電容數據中之被觸摸群的變動狀況進行手勢判斷，以讓使用者除了能夠在該單一按鍵上進行指紋識別操作外，還可執行音量調整、電源開關、遊戲畫面中之物件操作或顯示畫面之翻頁操作，從而減少該資訊處理裝置之框體的開孔數量以提高防水性能。1. The capacitive fingerprint sensing device of the present invention can be implemented on an information processing device in the form of a single button, and it can group a capacitor array through the internal hardware circuit, and according to the captured data in multiple frames of capacitance data Gesture judgment is performed on the changing status of the touch group, so that the user can not only perform fingerprint recognition operations on the single button, but also perform volume adjustment, power switch, object operation on the game screen, or page-turning operations on the display screen, thereby The number of openings in the frame of the information processing device is reduced to improve the waterproof performance.

2.本發明的電容式指紋感測裝置可藉由儲存一組態設定以決定所述分群的樣態。2. The capacitive fingerprint sensing device of the present invention can determine the state of the group by storing a configuration setting.

3.本發明的電容式指紋感測裝置可藉由一外部處理器提供所述的組態設定。3. The capacitive fingerprint sensing device of the present invention can provide the configuration setting through an external processor.

本案所揭示者，乃較佳實施例，舉凡局部之變更或修飾而源於本案之技術思想而為熟習該項技藝之人所易於推知者，俱不脫本案之專利權範疇。What is disclosed in this case is a preferred embodiment. For example, any partial changes or modifications derived from the technical ideas of this case and easily deduced by those who are familiar with the technology are within the scope of the patent right of this case.

綜上所陳，本案無論目的、手段與功效，皆顯示其迥異於習知技術，且其首先發明合於實用，確實符合發明之專利要件，懇請　貴審查委員明察，並早日賜予專利俾嘉惠社會，是為至禱。To sum up, regardless of the purpose, means and efficacy of this case, it shows that it is very different from the conventional technology, and its first invention is practical, and it does meet the patent requirements of the invention. I implore your review committee to understand it clearly and grant a patent as soon as possible. Society is for the Most Prayer.

100:電容式指紋感測裝置 110:電容陣列 120:掃描單元 121:掃描電路 122:定時電路 130:手勢分析單元 131:數據處理單元 132:組態單元 133:手勢判斷單元 140:傳輸介面 200:應用處理器 300:資訊處理裝置 310:中央處理單元 320:電容式指紋感測裝置 100: capacitive fingerprint sensing device 110: capacitor array 120: Scanning unit 121: Scanning circuit 122: Timing circuit 130: Gesture analysis unit 131: Data processing unit 132: Configuration unit 133: Gesture judgment unit 140: Transmission interface 200: application processor 300: information processing device 310: central processing unit 320: capacitive fingerprint sensing device

圖1繪示本發明之電容式指紋感測裝置之一實施例之方塊圖。 圖2繪示圖1之電容式指紋感測裝置之掃描單元和手勢分析單元之一實施例之方塊圖。 圖3繪示本發明之資訊處理裝置之一實施例之方塊圖。 FIG. 1 shows a block diagram of an embodiment of a capacitive fingerprint sensing device of the present invention. FIG. 2 is a block diagram of an embodiment of a scanning unit and a gesture analysis unit of the capacitive fingerprint sensing device shown in FIG. 1 . FIG. 3 shows a block diagram of an embodiment of the information processing device of the present invention.

100:電容式指紋感測裝置 100: capacitive fingerprint sensing device

110:電容陣列 110: capacitor array

120:掃描單元 120: Scanning unit

130:手勢分析單元 130: Gesture analysis unit

140:傳輸介面 140: Transmission interface

200:應用處理器 200: application processor

Claims (9)

一種電容式指紋感測裝置，係以單一按鍵的形式實現在一資訊處理裝置上，其具有：一電容陣列，用以提供一感測平面；一掃描電路，具有一定時掃描功能以週期性地自該電容陣列採集一幀電容數據；一數據處理單元，用以依一組態設定對各幀所述電容數據進行一分群處理以各獲得多個子群的感測值；一手勢判斷單元，用以對多幀所述電容數據之該些子群的所述感測值進行一手勢判斷運算以產生一手勢判斷結果，該手勢判斷結果係由向上滑動、向下滑動，向左滑動和向右滑動所組成群組所選擇的一種手勢；以及一傳輸介面，用以將該手勢判斷結果傳輸給一應用處理器，該應用處理器依該手勢判斷結果執行一對應的操作以提供一應用功能，其中，該應用功能係由音量調整、電源開關、遊戲畫面中之物件操作和顯示畫面之翻頁操作所組成群組所選擇的一種應用功能。 A capacitive fingerprint sensing device is implemented on an information processing device in the form of a single button, which has: a capacitor array to provide a sensing plane; a scanning circuit with a certain timing scanning function to periodically A frame of capacitance data is collected from the capacitance array; a data processing unit is used to perform a grouping process on the capacitance data of each frame according to a configuration setting to obtain sensing values of multiple subgroups; a gesture judgment unit is used for Performing a gesture judgment operation on the sensing values of the subgroups of the capacitance data in multiple frames to generate a gesture judgment result, the gesture judgment result consists of sliding up, sliding down, sliding left and right A gesture selected by sliding the formed group; and a transmission interface for transmitting the gesture judgment result to an application processor, and the application processor executes a corresponding operation according to the gesture judgment result to provide an application function, Wherein, the application function is an application function selected from a group consisting of volume adjustment, power switch, object operation on the game screen and page turning operation on the display screen. 如申請專利範圍第1項所述之電容式指紋感測裝置，其進一步包括一定時電路以驅使該掃描電路執行該定時掃描功能。 The capacitive fingerprint sensing device described in claim 1 of the patent application further includes a timing circuit to drive the scanning circuit to perform the timing scanning function. 如申請專利範圍第1項所述之電容式指紋感測裝置，其進一步包括一組態單元以提供該組態設定。 The capacitive fingerprint sensing device as described in claim 1 of the patent application further includes a configuration unit to provide the configuration setting. 如申請專利範圍第1項所述之電容式指紋感測裝置，其中該傳輸介面包括至少一GPIO介面。 In the capacitive fingerprint sensing device described in item 1 of the scope of the patent application, wherein the transmission interface includes at least one GPIO interface. 如申請專利範圍第1項所述之電容式指紋感測裝置，其中該傳輸介面包括一單線匯流排介面。 In the capacitive fingerprint sensing device described in item 1 of the scope of application, the transmission interface includes a single-wire bus interface. 如申請專利範圍第1項所述之電容式指紋感測裝置，其中，該組態設定係預先儲存在一記憶單元中或由該應用處理器提供。 In the capacitive fingerprint sensing device described in item 1 of the scope of application, the configuration setting is pre-stored in a memory unit or provided by the application processor. 如申請專利範圍第1項所述之電容式指紋感測裝置，其係一晶片裝置。 The capacitive fingerprint sensing device as described in item 1 of the scope of the patent application is a chip device. 一種資訊處理裝置，其具有一中央處理單元及以單一按鍵的形式實現在該資訊處理裝置上之一電容式指紋感測裝置，其中，該中央處理單元係用以和該電容式指紋感測裝置通信，且其具有：一電容陣列，用以提供一感測平面；一掃描電路，具有一定時掃描功能以週期性地自該電容陣列採集一幀電容數據；一數據處理單元，用以依一組態設定對各幀所述電容數據進行一分群處理以各獲得多個子群的感測值；一手勢判斷單元，用以對多幀所述電容數據之該些子群的所述感測值進行一手勢判斷運算以產生一手勢判斷結果，該手勢判斷結果係由向上滑動、向下滑動，向左滑動和向右滑動所組成群組所選擇的一種手勢；以及一傳輸介面，用以將該手勢判斷結果傳輸給一應用處理器，該應用處理器依該手勢判斷結果執行一對應的操作以提供一應用功能，其中，該應用功能係由音量調整、電源開關、遊戲畫面中之物件操作和顯示畫面之翻頁操作所組成群組所選擇的一種應用功能。 An information processing device, which has a central processing unit and a capacitive fingerprint sensing device implemented on the information processing device in the form of a single button, wherein the central processing unit is used to communicate with the capacitive fingerprint sensing device Communication, and it has: a capacitor array, used to provide a sensing plane; a scanning circuit, with a certain timing scanning function to periodically collect a frame of capacitance data from the capacitor array; a data processing unit, used for a The configuration setting performs a grouping process on the capacitance data of each frame to obtain the sensing values of multiple subgroups; a gesture judgment unit is used for the sensing values of the subgroups of the multi-frame capacitance data Performing a gesture judgment operation to generate a gesture judgment result, the gesture judgment result is a gesture selected by the group consisting of sliding up, sliding down, sliding left and sliding right; and a transmission interface for The gesture judgment result is transmitted to an application processor, and the application processor executes a corresponding operation according to the gesture judgment result to provide an application function, wherein the application function is operated by volume adjustment, power switch, and objects on the game screen An application function selected by the group formed by the page turning operation of the display screen. 如申請專利範圍第8項所述之資訊處理裝置，其係由一智慧型手機、一可攜式電腦、一車載電腦和一門禁裝置所組成群組所選擇的一種裝置。 The information processing device described in item 8 of the scope of the patent application is a device selected from a group consisting of a smart phone, a portable computer, a vehicle-mounted computer and an access control device.
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