TW201625039A - 選擇性特定吸收率調整 - Google Patents
選擇性特定吸收率調整 Download PDFInfo
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/28—TPC being performed according to specific parameters using user profile, e.g. mobile speed, priority or network state, e.g. standby, idle or non transmission
- H04W52/283—Power depending on the position of the mobile
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/3827—Portable transceivers
- H04B1/3833—Hand-held transceivers
- H04B1/3838—Arrangements for reducing RF exposure to the user, e.g. by changing the shape of the transceiver while in use
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/18—TPC being performed according to specific parameters
- H04W52/22—TPC being performed according to specific parameters taking into account previous information or commands
- H04W52/221—TPC being performed according to specific parameters taking into account previous information or commands using past power control commands
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B70/00—Technologies for an efficient end-user side electric power management and consumption
- Y02B70/30—Systems integrating technologies related to power network operation and communication or information technologies for improving the carbon footprint of the management of residential or tertiary loads, i.e. smart grids as climate change mitigation technology in the buildings sector, including also the last stages of power distribution and the control, monitoring or operating management systems at local level
Abstract
一種電子裝置,提供分辨鄰近傳輸源的人體組織與非人體物件的能力。以此方式,可根據是偵測到人體組織或是非人體物件鄰近RF發送器,而選擇性進行對於傳輸源的傳輸功率調整。分辨鄰近傳輸源的人體組織與其他非人體組織物件,提供了SAR調整的選擇性控制。因此,藉由在偵測到人體組織鄰近時減少傳輸功率,但在偵測到非人體物件(但非人體組織)鄰近時不減少傳輸功率,電子裝置可避免因降低傳輸功率以符合SAR標準而引入的一些通訊效能下降。
Description
本發明係關於選擇性特定吸收率調整。
現代的電子裝置通常利用高頻無線電通訊,特別是對於行動裝置而言。因為在人體組織位置鄰近發送天線時人體組織可受到強無線電波的不良影響(例如被加熱),各種政府機關與產業機構建立了標準,以限制發送入人體組織的射頻(radio frequency;RF)功率。例如,特定吸收率(Specific Absorption Rate;SAR)測試測量發射入位於RF發送器附近的人體組織的RF功率。滿足此種SAR標準的一種作法,涉及在偵測到物件(例如人體部分)鄰近RF發送器時減少RF傳輸功率。然而,減少RF傳輸功率亦可損害電子裝置的通訊效能。
所說明的科技提供一種系統,系統具有能夠分辨鄰近傳輸源的人體組織與非人體物件的能力。以此方式,可根據偵測到人體組織或非人體物件鄰近RF發送器,而選擇性地調整傳輸源的傳輸功率。分辨鄰近傳輸源的人體組織與非人體物件,提供對於SAR調整的選擇性控制。因此,藉由在偵測到人體組織鄰近時減少傳輸功率,但在偵測到非人體物件(但非人體組織)鄰近時不減少傳輸功率,電子裝置可避免為符合SAR標準降低傳輸功率所引入的一些通訊效能下降。
第1圖圖示說明用於在特定吸收率(SAR)標準背景內容下,選擇性調整射頻(RF)傳輸功率的範例系統100。電子裝置102包含連接至天線(諸如天線106與108)的傳輸功率控制器104與一或更多個RF傳輸源。通常而言,天線106與108被放置在包覆電子裝置102的外殼內部,雖然天線106與108被圖示為在外殼外部以圖示說明鄰近各種主體(例如人體組織112、非人體物件114)的概念。電子裝置102亦可例如包含顯示面板110與內部電子部件,諸如記憶體、一或更多個處理器、輸入與輸出介面、電源供應器以及其他部件。
傳輸功率控制器104分辨鄰近系統100的RF傳輸源的非人體物件與人體組織。在作業期間,電子裝置102可被人握持(例如沿著電子裝置102的頂邊緣)。若偵測到人體組織,則此偵測將使得傳輸功率控制器104減少鄰近人體組織112的RF傳輸源的傳輸功率,以符合SAR標準。相對的,在電子裝置102放在桌子上時,桌子可被偵測為鄰近RF傳輸源的非人體物件114。對非人體物件的偵測,將使得傳輸功率控制器104減少鄰近桌子的RF傳輸源的傳輸功率。後者範例對於符合SAR標準而言是非必要的,因為SAR標準不適用於非人體組織。然而,將傳輸功率控制器104增強,允許傳輸功率控制器104分辨鄰近的人體組織與鄰近的非人體物件。因此在一個實施例中,由傳輸功率控制器104供應至天線108的傳輸功率將被減少以符合SAR標準,同時由傳輸功率控制器104供應至天線106的傳輸功率將不會被減少。亦可利用其他調整方案。
第2圖圖示說明用於在SAR標準背景內容中選擇性調整RF傳輸功率的另一範例系統200。電子裝置202包含傳輸功率控制器204與RF發送器206與208(例如傳輸源)。通常,RF發送器206與208被放置在包覆電子裝置202的外殼內部。電子裝置202亦可例如包含顯示面板210與內部電子部件,諸如記憶體、一或更多處理器、輸入與輸出介面、電源供應及其他部件。
接近性感測器墊212被放置為靠近RF發送器206,以偵測進入RF發送器206鄰近範圍的物件。類似的,接近性感測器墊214被放置為靠近RF發送器208,以偵測進入RF發送器208鄰近範圍的物件。在一個實施例中,RF發送器206可代表行動寬頻發送天線,同時RF發送器208可代表另一行動寬頻發送天線、WiFi發送天線等等。可利用各種組合。接近性感測器墊212與214經設計以偵測由分別靠近RF發送器206與208的傳導性物件的靠近,所造成的外部電容性耦合改變。接近性感測器墊212與214的偵測能力,亦對周遭環境條件敏感,諸如溫度及(或)濕度的改變,由於溫度與濕度兩者皆可影響接近性感測器墊212與214的電容性響應。替代或額外地,可使用用於觸控螢幕、軌跡板與電子裝置202中的其他輸入部件,來偵測物件接近性。
參考墊216亦被放置為靠近RF發送器206。參考墊216為經設計為對鄰近外部物件所造成的電容值改變不敏感(例如獨立於此電容性改變),但是保持對周遭環境條件(諸如溫度及(或)濕度變化)敏感的感測器。在一個實施例中,參考墊216被包覆在外套中,外套屏蔽參考墊216,使參考墊216不受外部電容值改變影響,但仍允許對周遭環境條件引發的內部電容值改變保持敏感。參考墊216偵測到的這些內部電容值改變,實質上與接近性墊212與214中周遭環境條件引發的內部電容值改變成線性比例。因此,參考墊216作為至少針對溫度及(或)濕度的周遭環境條件感測器,並提供對於傳輸功率控制器204的參考或補償訊號。參考訊號用於從自接近性感測器墊212與214接收來的接近性訊號中,移除溫度與濕度的效應。
隨著物件(不論是否為人體組織)進入電容性感測器212的鄰近範圍,電容性感測器212經歷電容性耦合的改變,此改變反映為電容性感測器212傳送至傳輸功率控制器204的主要接近性訊號中的改變。在此範例中,從電容值感測器212至地測量電容值。傳輸功率控制器204亦接收其他訊號,包含來自參考墊216的參考訊號、來自電容性感測器214的第二接近性訊號、以及其他背景內容性訊號,諸如動作訊號(例如來自加速度計、陀螺儀及(或)指南針)、攝影機與麥克風訊號、觸控螢幕輸入訊號以及其他基於感測器式訊號。基於這些輸入,傳輸功率控制器204決定是否有人體組織物件(諸如手208)已進入RF發送器206的鄰近範圍。若是如此,則傳送功率控制器204減少所發送的RF 206的傳輸功率,以符合SAR標準,及(或)保護人體組織使人體組織不受RF傳輸訊號的負面影響。
第3圖圖示說明用於在SAR標準背景內容下選擇性調整RF傳輸功率的系統(例如電子裝置)的範例架構300。在高階看來,對於系統的架構300結合經溫度/濕度補償接近性訊號與基於動作式人體偵測,以分辨在個別RF發送器鄰近範圍內的人體組織與非人體組織物件。以此方式,系統可更選擇性地調整傳輸功率以符合SAR標準。
電容值感測電路302包含一或更多個接近性感測器墊以及參考墊。在第3圖,電容值感測器電路302被圖示為具有兩個接近性感測器墊:輸出主要接近性訊號至電容值數化器304的主要接近性感測器墊(最接近RF發送器),以及輸出次要接近性訊號至電容值數化器304的次要接近性感測器墊(最遠離RF發送器)。電容值感測電路302的參考墊輸出溫度與濕度參考訊號(「T與H參考」)至電容值數化器304。電容值感測電路302的參考墊經設計為對在參考墊鄰近範圍中的外部物件所造成的電容值改變不敏感(例如獨立於此改變),但保持對溫度與濕度引發的電容性改變敏感,此電容性改變的量實質上與電容性感測電路302的其他接近性墊中的溫度與濕度引發的電容值改變成線性比例。
在一個實施例中,在全功率正常作業期間內,電容值數化器304經配置為每9毫秒取樣電容值數化器304的三個感測器輸入或級,其中每一取樣包含無號16位元數字,此數字與在對應輸入或級處接收到的電容性接近性訊號或電容性參考訊號成比例。在低功率連接預備作業期間內,電容性數化器304經配置為每800毫秒取樣三個感測器輸入或級。全功率作業使用約六毫瓦的功率,而低功率作業使用約一毫瓦的功率。
SAR接近性偵測子系統306輪詢電容值數化器304數化的電容性感測器資料,並執行偵測程序,偵測程序分辨鄰近傳輸源的人體組織與非人體物件。在取樣率相當穩定(取樣間取樣區間中的正負5%變異性)的情況中利用從1 Hz至10 Hz的範例輪詢取樣率,雖然可替代地利用其他取樣率。例如,較慢的取樣率提升偵測鄰近物件的時間量,因為數位濾波暫態響應需要較長的時間才能完成。在此情境中,對於最快的效能,推薦的取樣率為約10 Hz,因為較高的取樣率允許架構300更能回應於電容性感測器資料中的改變。若利用低功率作業(例如在於一些系統中無法達成10 Hz取樣率的情況中),則減少取樣率至固定的較低率是可被接受的,但效能可下降。在另一範例中,若使用較低的取樣率,則取樣率中的改變可對系統300中的數位濾波器(例如他們的暫態響應時間)引入穩定時間。相較於使用電容值數化器304的內部取樣率,此種輪詢可較有效率地利用功率。可在電路系統中或在電路系統結合者、一或更多個處理器、以及軟體或韌體指令中實施SAR接近性偵測子系統306。
一般而言,溫度與濕度的提升,提升由電容值數化器與電容性感測器墊(諸如接近性墊或參考墊)測量到的感測電容值,而溫度與濕度的降低,降低由電容值數化器與電容性感測器墊測量到的感測電容值。因此,架構300提供對於由電容值感測電路所經歷的溫度與濕度的效應的補償。
在一個實施例中,電容值數化器340在正負2pF的輸入範圍下具有正負20pF的動態範圍。電容值數化器340利用偏移(offset)(類比前端(Analog Front End;AFE)偏移),以調整輸入接近性訊號與參考訊號的基線。然而,電容值數化器340對於個別系統中電路部件值中即便是非常小的差異的極度敏感度,可產生不同的適合用於將對於每一系統的數化電容性輸入訊號零化(zeroing-out)的AFE偏移。此外,即使是精確的AFE偏移,仍可不完全將數化感測器值零化,因此使用額外的補償DC偏移以進一步減少電容性輸入訊號的環境部件(例如在室溫與室內濕度下、沒有物件鄰近之下校正)。
因此,由系統300的校正能力,決定補償DC偏移。執行校正以決定對於每一輸入的適當的AFE偏移,由AFE偏移配置電容值數化器304。除了AFE偏移以外,校正也決定用於由所決定的AFE偏移,將數化電容性輸入零化的適當的DC偏移。一旦決定,則儲存AFE偏移與DC偏移,並在往後在初始化期間再使用,因為只要硬體平台不改變,則AFE偏移與DC偏移不會傾向改變。注意到,至少部分因為系統部件值中的變異,個別系統可具有不同的AFE偏移與DC偏移。
電容性感測電路302、電容值數化器304以及SAR接近性偵測子系統306,與主機硬體與軟體平台308協作以提供選擇性SAR調整資訊,主機硬體與軟體平台308使用選擇性SAR調整資訊以調整數據機310(範例RF發送器)的傳輸功率。主機硬體與軟體平台308同步並接收來自電容值數化器304經由中斷訊號通道(IRQ)與I2
C(或其他介面)的數化電容值取樣(如相關於主要接近性訊號、次要接近性訊號以及參考訊號)。
硬體與軟體平台308(例如平板電腦、行動智慧型手機、膝上型電腦、可穿戴式裝置或其他裝置)除了其他部件之外包含下列之一或更多者: · 一或更多個加速度計 · 一或更多個陀螺儀 · 一或更多個磁力計 · 感測器硬體 · 驅動器軟體 · 動作感測器融合電路系統及(或)軟體 · 通訊硬體與驅動器軟體(例如WiFi數據機介面硬體與軟體)
亦可利用其他感測器,諸如一或更多個氣壓計、觸控螢幕、一或更多個攝影機、一或更多個麥克風、加速度計、陀螺儀、指南針以及其他感測器。各種加速度計、陀螺儀、磁力計以及其他感測器代表動作感測器部件,動作感測器融合電路系統及(或)軟體結合動作感測器部件的輸出訊號,以更佳地擷取特定動作事件與任何單一構成感測器的輸入。動作感測器融合電路系統及(或)軟體亦可管理各種感測器的校正、開啟/關閉陀螺儀以及管理感測器功率消耗。
硬體與軟體平台308部分與SAR接近性偵測子系統306與基於動作式人體偵測器316通訊,此係藉由透過數化器驅動器311、數據機驅動器312以及硬體抽象層314來傳訊。硬體抽象層314允許SAR接近性偵測子系統306與基於動作式人體偵測器316為獨立於平台式,從而允許SAR接近性偵測子系統306與基於動作式人體偵測器316不經修改(或不經大量修改)即可與其他主機硬體與軟體平台工作。
基於動作式人體偵測器316使用平台特定式三軸加速度計與動作感測器融合資料,以偵測人體動作並提升SAR接近性偵測子系統306的精確度。基於動作式人體偵測器316決定裝置是否正經歷預期為基於人體式動作的動作,或裝置是否以指示人未使用系統的方式指向(例如長時間面朝下)。因此在一個實施例中,基於動作式人體偵測器316決定所偵測到的動作是否提升人體組織位於接近性感測器的鄰近範圍中的機率。基於動作式人體偵測狀態被用於調整對於人體存在的信心,且因此用於支援選擇性調整鄰近人體組織的RF傳輸功率。
在SAR接近性偵測器子系統306的每一週期的末端,更新物件與人體偵測指示符。數據機310使用以決定RF傳輸功率的減少是否適當。例如,在四態偵測指示系統中,若物件偵測指示符指示偵測到物件鄰近RF發射器,但人體偵測指示符未指示偵測到人體鄰近,則不減少RF傳輸功率為適當的。或者,若人體偵測指示符兩者指示偵測到人體/物件鄰近RF發送器,則RF傳輸功率減少為適當的。若兩指示符皆未指示偵測到人體/物件,則不減少RF傳輸功率為適當的。最後,若人體偵測指示符指示人體鄰近,但物件偵測指示符不指示物件鄰近,則RF傳輸功率減少為適當的。
數據機310亦將偵測狀態資訊傳至主機硬體與軟體平台308中的WiFi驅動器,此亦可減少個別RF發送器的RF傳輸功率。數據機310亦可向SAR接近性偵測器子系統306請求其他狀態資訊,諸如人體偵測信心值。
第4圖圖示說明範例SAR接近性偵測子系統400的部件,SAR接近性偵測子系統400在SAR標準背景內容下選擇性調整RF傳輸功率。給定來自三個所感測輸入的原始數化電容值資料(例如主要接近性訊號、次要接近性訊號以及參考/補償訊號),在一個實施例中SAR接近性偵測子系統400執行下列作業之一或更多者: 1. SAR接近性偵測子系統400基於對於每一通道的預先校正增益,縮放來自三個所感測輸入的原始數化電容值資料(例如主要接近性訊號、次要接近性訊號以及參考訊號),提供經縮放主要接近性資料、經縮放次要接近性資料以及經縮放補償資料。 2. SAR接近性偵測子系統400從經縮放接近性資料與經縮放補償資料濾除溫度與濕度效應。 3. SAR接近性偵測子系統400執行「動態偵測」,偵測在鄰近範圍內快速移動的物件(不論是否為人體組織)的接近性。 4. SAR接近性偵測子系統400執行「靜態偵測」,偵測在鄰近範圍內非常慢速移動或靜止的物件(不論是否為人體組織)的接近性,此係特別有用於在電力啟動時偵測鄰近範圍中的物件。 5. SAR接近性偵測子系統400執行「人體偵測」,基於接近性資料對類人體模版的相關性,偵測鄰近範圍內的大型類人體物件(例如軀幹、大腿等等)的存在。其他資料(包含基於動作式人體偵測資料)可由此相關性聚合,以提供在人體組織偵測中的更多信心。 6. SAR接近性偵測子系統400在接近性變異值滿足變異值條件時(例如在接近性變異值在一段足夠長的時間內足夠低時),調整周遭環境接近性上至預定邊際(例如每秒兩個計數)。在一個實施例中,在使用物件偵測作業之一者當前沒有偵測到物件時,並在前七十秒內沒有偵測到人體時,發生此種調整類型。 7. SAR接近性偵測子系統400由從上次周遭環境接近性更新以來偵測到的補償改變,調整當前周遭環境接近性。在一個實施例中,此調整類型可發生在冷開機(cold-boot)時、退出所連接的待機狀態時、或在物件僅被靜態地偵測到(例如未動態地或由人體偵測到)且至少二十秒未被更新時。 8. SAR接近性偵測子系統400由預定邊際向上調整周遭環境補償(例如每秒兩個計數)。 9. SAR接近性偵測子系統400監視從參考墊接收來的補償訊號中的快速持續改變,且標示一旦補償訊號已安定則發生「周遭環境接近性與補償更新」。 10. SAR接近性偵測子系統400更新物件與人體偵測指示符。
上面的作業被給定為具有指定順序,但一些作業可被根據(不為限制)工程、功率及(或)時序考量而重新排序。
功率管理電路402從主機系統與數據機提供功率狀態資訊至SAR接近性偵測子系統400,SAR接近性偵測子系統400能夠動態地將電容值數化器404重新配置為不同的功率狀態。以此方式,電容值數化器404可使用少如一毫瓦的功率,或大如六毫瓦的功率。例如,在RF發送器未發送時,電容值數化器404中的暫存器被配置為消耗較少功率的功率狀態(相較於在RF發送器發送中時)。在一些功率狀態,SAR接近性偵測子系統400配置電容值數化器404中的暫存器為運行於低功率狀態中(例如一毫瓦),同時仍以1Hz的減少的率取樣電容值資料。此種作業可有用於允許SAR接近性偵測子系統400由溫度及(或)濕度的環境性改變所造成的電容性改變,更新SAR接近性偵測子系統400的周遭環境接近性與補償訊號。
自動調諧器406在校正時間與電容性數化器404介面連接,以校正AFE、接近性與補償偏移,這些偏移被儲存在記憶體中作為SAR校正資料408。AFE偏移被透過初始化器410回饋,以在校正時間配置電容值數化器404中的暫存器。AFE偏移提供初始調整至從三個電容性感測器墊輸入接收來的原始電容值訊號。
接近性與補償偏移被傳至縮放器412,縮放器412基於接近性與補償偏移,縮放從電容值數化器404接收來的接近性與補償資料(亦即電容值資料)。每一通道具有基於對應偏移的自身的增益調整,此係由在設計時及(或)製造時的經驗測試資料決定並儲存於SAR校正資料408記憶體中。
經縮放的電容值資料(與)被傳至溫度與濕度濾波器414,溫度與濕度濾波器414至少部分地移除由於溫度及(或)濕度改變所影響的環境條件所造成的電容值改變。SAR接近性偵測子系統400應用方程式1(如下)以產生經調整的接近性訊號。(1)
溫度與濕度濾波器414由從SAR校正資料408記憶體接收來的當前接近性偏移計算周遭環境接近性訊號(),周遭環境接近性訊號被進一步由基線調整作業基於溫度及(或)濕度改變來調整。溫度與濕度濾波器414亦監視從縮放器412接收來的經縮放補償訊號,以偵測經縮放補償訊號中的快速改變。此種快速改變指示鄰近範圍中的快速溫度及(或)濕度改變。溫度與濕度濾波器414偵測在一段時間視窗上的經縮放補償訊號中的訊號改變量,並決定經縮放補償訊號改變是否滿足快速改變條件(例如改變對於多個連續的檢查超過快速改變臨限)。若滿足快速改變條件,則溫度與濕度濾波器414對基線調整器416指示溫度及(或)濕度改變事件。
基線調整器416決定當前周遭環境接近性,以從經縮放接近性(電容值)訊號移除溫度及(或)濕度改變的效應,經縮放接近性(電容值)訊號係由溫度與濕度濾波器414從縮放器412接收。在一個實施例中,溫度及(或)濕度改變可造成數化接近性電容值1000個計數或更多的改變,而這些改變可造成錯誤的接近性觸發。藉由從經縮放接近性(電容值)訊號濾除溫度及(或)濕度改變的效應,接近性偵測器在變化的環境條件(例如溫度及(或)濕度改變)之下提供精確得多的結果。
在一個實施例中,從經縮放接近性訊號減去經縮放補償訊號(兩者皆由從縮放器412接收來的經縮放電容值資料表示),溫度與濕度濾波器414可在約五十個計數內移除溫度及(或)濕度的效應。例如,在於溫度與濕度上追蹤接近性而已移除周遭環境接近性且沒有物件靠近電容性感測器墊時,吾人將期望看到平坦線響應。然而,所產生的訊號通常將浮動在約五十個計數(或一些中央基線的正負25個計數)的變異值周圍。為了讓此響應更接近於平坦,只要經調整接近性(經DC濾除)的變異值在足夠的時間期間內位於可接受的邊際之內,且沒有物件被偵測到在鄰近範圍內,則基線調整器416調整周遭環境接近性。由接近性變異值部件418基於DC濾除接近性訊號將變異值提供至基線調整器416,DC濾除接近性訊號係由DC濾波器420從經調整接近性訊號導出。DC濾波器420從經調整接近性訊號移除DC偏移,準備由動態接近性偵測器422處理。在一個實施例中,DC濾波器420包含微分器與隨後的漏積分器,微分器與隨後的漏積分器結合執行有效率的高通濾波器作業。
接近性變異值部件418決定何時存在周遭環境條件(使得接近性與補償基線可被更新)。使用加權平均以計算平均與均方,從源自DC濾波器420的DC濾除接近性訊號導出周遭環境條件的存在。經驗資料顯示在沒有物件位於鄰近範圍內時接近性變異值是持續低的,因此接近性變異值對於更新周遭環境接近性與補償訊號,提供了良好的區閘。
在一個實施例中,基線調整器416在DC濾除接近性變異值在至少一段預定時間期間(例如1秒)低於預定計數邊際(例如10個計數)時、靜態與動態偵測器未觸發、且人體偵測器在一段預定時間期間(例如70秒)未被觸發時,執行周遭環境接近性與補償訊號的受限速率(例如每秒兩個計數)更新。速率限制係基於對於所接收的數化接近性與補償電容值資料的分析,分析展示了環境條件的快速改變(例如溫度及(或)濕度的改變)未造成多於數化電容值中的預定改變(例如每秒兩個計數)。儘管如此,仍可利用其他速率限制、邊際以及時間週期。使用所說明的實施例,周遭環境補償被由當前經縮放補償與當前周遭環境補償中差異來更新,而差異速率受限於預定限制(例如每秒兩個計數)。
在另一實施例中,基線調整器416基於所接收到的當前經縮放接近性與補償訊號更新周遭環境接近性與補償,若溫度與濕度濾波器414偵測到快速溫度及(或)濕度改變事件。在此情境中,可利用至少兩個選項以更新周遭環境接近性,雖然在任一選項下皆由當前經縮放補償訊號更新周遭環境補償。在第一選項下,基線調整器416將周遭環境接近性設定為當前經縮放接近性與當前經縮放補償訊號之間的差異。在第二選項下,當前偵測到人體,所以基線調整器416由當前經縮放補償訊號與當前周遭環境補償訊號之間的差異調整周遭環境接近性。此至少兩個選項處理在人體被接近性訊號偵測到時的情境。在這些情境中,人體的存在提供了顯著的貢獻至外部電容性改變,所以使用當前經縮放補償訊號而非當前經縮放接近性(因為當前經縮放補償訊號對物件接近性不敏感)。
若經調整的接近性訊號滿足靜態接近性條件(例如超過靜態接近性臨限),則靜態接近性偵測器424指示在鄰近範圍中偵測到物件。一旦觸發,則在經調整接近性在預定時間週期(例如1秒)中不再滿足靜態接近性條件,則靜態物件偵測狀態重置。將狀態接近性偵測訊號傳至動態接近性偵測器422以及邏輯OR運算子部件426。
若經DC濾除經調整的接近性訊號滿足動態接近性條件(例如超過動態接近性臨限),則動態接近性偵測器422指示偵測到物件。一旦觸發,則動態物件偵測狀態在下列條件之一或更多者被滿足時重置,如由邏輯OR運算子部件426所決定的: 1. DC濾除經調整接近性訊號滿足動態偵測重置條件(例如DC濾除經調整接近性訊號對於至少兩個取樣較負於負動態偵測臨限)。 2. 靜態接近性偵測訊號對於預定取樣數量被重置(例如2個取樣)。
人體偵測器428使用相關性濾波器,以決定輸入的經調整接近性訊號是否相關於類人體模版。經驗資料指示,用於偵測類人體接近性物件的良好模版,為在預定時間期間(例如5秒)上的步階函數以及滿足人體相關性條件(例如超過0.8)的相關性。若輸入的經調整接近性訊號相關於模版以滿足人體相關性條件,則人體偵測器428指示接近性感測器墊被放置為鄰近足夠大的人身體部分(諸如膝部、腹部或大前臂),而具有對於人體組織位於鄰近範圍中的信心。每次人體偵測器428滿足人體相關性條件且靜態偵測器或動態偵測器被觸發,則將人體偵測信心增量一比率,且在相關性不再滿足人體相關性條件(例如降至低於0.8)之後再次提升。若預定時間期間內相關性持續無法滿足人體相關性條件(例如保持低於0.8),則將人體偵測信心減少一比率,直到人體偵測信心達到中立位準(例如零)。
人體偵測聚合器430根據從基於動作式人體偵測子系統(見第3圖中的基於動作式人體偵測器316與第5圖中的基於動作式人體偵測子系統500)接收來的基於動作式人體偵測器觸發器狀態,縮放從人體偵測器428接收來的人體偵測信心訊號。人體偵測聚合器430在人體偵測器兩者(例如基於動作式人體偵測子系統與人體偵測器428)偵測到人體位於鄰近範圍中時,等效地提升人體偵測結果的信心。
在人體偵測器428與人體偵測聚合器430的一個實施例中,人體偵測器428處理經調整的接近性(例如可包含上至N個通道的經調整的接近性)並計算對於每一通道的人體組織存在的信心,如對於每一通道的人體偵測信心訊號(例如基於滿足人體相關性條件)。這些N個人體偵測信心訊號隨後被輸入人體偵測聚合器430,若基於動作式人體偵測器觸發器狀態指示人體存在,則人體偵測聚合器430由一縮放因數提升每一人體偵測信心訊號。相對於人體偵測濾波器條件測試人體偵測信心訊號(例如,任何人體偵測信心訊號是否等於或超過人體偵測臨限)。若滿足條件,則人體偵測聚合器430輸出已偵測人體訊號至指示符控制432,指示已偵測到人體。若已偵測人體訊號被觸發,則已偵測人體訊號保持被觸發,直到人體偵測信心訊號降低至中立值(例如零)。一旦在預定時間期間內(例如7秒)人體相關性條件不再滿足於人體偵測器428中,則人體偵測信心訊號被逐漸降低(例如由25%增量降低)。
指示符控制432從邏輯OR運算子部件426接收已偵測物件訊號並從人體偵測聚合器430接收已偵測人體訊號,指示符控制432並輸出兩個指示符,其中一個指示是否偵測到任何物件,而另一個指示是否偵測到人體組織。基於這些輸出,SAR接近性偵測子系統400可調整RF發送器的傳輸功率以符合SAR標準,及(或)保護人體組織使其不受RF傳輸訊號的負面影響。
第5圖在SAR標準的背景內容中,圖示說明用於選擇性調整RF傳輸功率的範例基於動作式人體偵測子系統500的部件。基於動作式人體偵測子系統500使用來自基於動作式感測器融合作業的三軸加速度計資料以及指向資料,決定電子裝置是否正經歷可由人體造成的動作。基於動作式人體偵測子系統500積分一時間視窗內的相對動作,且隨後決定經積分總和是否滿足人體動作條件(例如總和超過人體動作臨限)。
在一個實施例中,基於動作式人體偵測子系統500接收來自加速度計驅動器502的加速度計資料,加速度計驅動器502為對於加速度計感測器(未圖示)的介面。感測器校正器504施加校正偏移及(或)增益調整至加速度計資料。向量量值計算器部件506由經調整加速度計資料計算三軸加速度計向量。高通濾波器508由全加速度計取樣率濾除三軸加速度計向量的量值,以移除DC偏移。移動視窗積分器510執行經高通濾除加速度計向量的預定時間視窗(例如一秒)積分。平滑濾波器512濾除從移動視窗積分器510接收到的經積分結果,以得到當前活動位準。
活動狀態更新器514基於從上次執行更新以來的最大活動位準,週期性(例如每十秒)更新活動遲滯。在每一週期內(例如每十秒區間),監視當前活動位準,並相對於靜止條件(例如依經驗決定的活動位準臨限)測試在此週期內偵測到的最大活動位準。若最大活動位準(如活動遲滯所指示的)滿足靜止條件(例如小於或等於靜止臨限),則減少活動遲滯(但不低於零)。若最大活動位準不滿足靜止條件(例如高於靜止臨限),則活動遲滯被提升(但不高於活動遲滯最大值)。活動遲滯資料提供活動狀態結果。
人體偵測狀態更新器516使用來自動作感測器融合部件518的指向資訊,更新活動狀態。若裝置指向滿足穩定條件(例如指向在至少十秒內未改變超過1.2度),且裝置指向使得RF發送天線可不接近大型人體部位,則指示未偵測到人體。若裝置指向滿足穩定度條件與靜止條件,且裝置指向使得RF發送器天線可接近大型人體部位,則指示未偵測到人體。注意到,靜止條件與活動臨限之間可存在靜滯區(dead band),以防止加速度計人體偵測狀態中的快速改變。若裝置指向滿足穩定條件但未滿足靜止條件,且裝置指向使得RF發送器天線可接近大型人體部位,則指示偵測到人體。注意到,靜止條件與活動臨限之間可存在靜滯區,以防止加速度計人體偵測狀態中的快速改變。
回應於人體偵測狀態的更新,人體偵測狀態更新器516輸出動作人體偵測訊號至SAR接近性偵測子系統的人體偵測聚合器。
第6圖圖示說明在SAR標準背景內容中,用於選擇性調整RF傳輸功率的範例作業600。產生作業602產生來自電子裝置的接近性感測器的接近性訊號。接近性感測器偵測接近性感測器鄰近範圍內的電容性耦合的改變,且接近性感測器亦敏感於周遭環境條件,諸如溫度與濕度的改變。此敏感性被反映在所產生的接近性訊號中(作為接近性訊號中的周遭環境條件偏移)。另一產生作業604由電子裝置的環境條件感測器產生參考訊號。環境條件感測器敏感於周遭環境條件(諸如溫度與濕度的改變),但不敏感於改變環境條件感測器鄰近範圍中的電容性耦合的物件。因此,環境條件感測器偵測環境條件感測器上的周遭環境條件的改變,但獨立於環境條件感測器鄰近範圍中的物件。
調整作業606基於參考訊號調整接近性訊號,以濾除周遭環境條件在接近性感測器上的效應。偵測作業608偵測接近性感測器鄰近範圍中的物件的存在、物件是快速移動、慢速移動、或是保持靜止。另一偵測作業610偵測電子裝置接近性感測器的鄰近範圍中人體組織的存在。在一個實施例中,使用相關濾波器完成此偵測,以決定經調整的接近性訊號是否相關於類人體模版。
又另一偵測作業612偵測電子裝置的動作狀態,以決定電子裝置是否似為被人體握持著(例如基於相信為代表人體握持的動作及(或)指向的期待)。另一調整作業614基於電子裝置的動作狀態(例如被人體握持或未被人體握持),調整對於人體組織存在的信心。訊號作業616傳訊通知電子裝置的RF發送器,以基於在接近性感測器的鄰近範圍中偵測到物件及(或)人體組織,而調整RF發送器的傳輸功率。此種偵測可基於作業600中的偵測與調整作業之一或更多者。
第7圖圖示說明在SAR標準的背景內容中,有用於選擇性調整RF傳輸功率的範例電子裝置700。可實施在行動電子裝置中的電子裝置700,包含處理器702、記憶體704、顯示器706(例如觸控螢幕顯示器)、以及其他介面708(例如鍵盤)。記憶體704一般而言包含揮發性記憶體(例如RAM)與非揮發性記憶體(例如快閃記憶體)兩者。作業系統710(諸如Microsoft Windows®作業系統)位於記憶體704中並由處理器702執行,雖然應了解到可利用其他作業系統。
一或更多個應用程式712被載入記憶體704,並由處理器702在作業系統710上執行。應用程式712的範例包含(不為限制)用於處理接近性偵測、動作偵測、動作感測器融合、靜態偵測、動態偵測、人體偵測、周遭環境條件濾除、接近性濾波器調整等等的指令。電子裝置700包含電源供應716,電源供應716由一或更多個電池或其他電源供電,並提供電力至電子裝置700的其他部件。電源供應716亦可連接至外部電源,外部電源超控或充電內建的電池或其他電源。
電子裝置700包含一或更多個通訊收發器730以提供網路連接性(例如行動電話網路、Wi-Fi®、BlueTooth®等等)。電子裝置700亦包含各種其他部件,諸如定位系統720(例如全球定位衛星收發器)、一或更多個加速度計722、以及額外的存儲器728。亦可利用其他配置。
在範例實施例中,接近性偵測子系統、軟體平台、作業系統、各種驅動器、硬體抽象層、以及其他模組可由指令實施,這些指令儲存在記憶體704及(或)儲存裝置728中並由處理器702處理。可應用的安全標準(例如SAR標準)及(或)包含傳輸功率調整值、臨限、條件等等的表格,可被儲存在記憶體704及(或)儲存裝置728中作為持續的資料儲存庫。
電子裝置700可包含各種有形的電腦可讀取儲存媒體與無形的電腦可讀取通訊訊號。有形的電腦可讀取存儲器可由可被電子裝置700存取的任何可用的媒體實施,並包含揮發性與非揮發性儲存媒體、可移除式與不可移除式儲存媒體兩者。有形的電腦可讀取儲存媒體排除了無形的通訊訊號,並包含由任何用於儲存資訊的方法或科技實施的揮發性與非揮發性、可移除式與不可移除式的儲存媒體,此等資訊諸如電腦可讀取指令、資料結構、程式模組或其他資料。有形的電腦可讀取儲存媒體包含(但不限於)RAM、ROM、EEPROM、快閃記憶體或其他記憶體科技、CDROM、數位多媒體光碟(DVD)或其他光學碟片存儲器、磁匣、磁帶、磁碟存儲器或其他磁性儲存裝置、或任何其他可用於儲存所需資訊並可由電子裝置700存取的有形媒體。相對於有形的電腦可讀取儲存媒體,無形的電腦可讀取通訊訊號可利用電腦可讀取指令、資料結構、程式模組或位於經調變資料訊號中的其他資料,諸如載波或其他訊號傳輸機制。用詞「經調變資料訊號」表示一或更多個特性被由將資訊編碼入訊號中的方式來設定或改變的訊號。
在所說明的科技的一個範例中,電子裝置包含RF發送器、接近性感測器、以及接近性偵測子系統。接近性感測器產生接近性訊號,接近性訊號取決於接近性感測器的一或更多個周遭環境條件,並取決於接近性感測器鄰近範圍中的物件的接近性。接近性偵測子系統通訊耦合至接近性感測器與RF發送器,並藉由從接近性訊號濾除一或更多個周遭環境條件的效應來調整接近性訊號。經調整接近性訊號由一或更多個物件識別訊號傳訊通知RF發送器,以調整RF發送器的傳輸功率。
前述範例電子裝置的範例電子裝置,可進一步包含放置為接近RF發送器與接近性感測器的周遭環境條件感測器。周遭環境條件感測器通訊耦合至接近性偵測子系統。周遭環境條件感測器產生參考訊號。參考訊號獨立於周遭環境條件感測器的鄰近範圍中的物件。接近性偵測子系統基於參考訊號調整接近性訊號,以從接近性感測器濾除一或更多個周遭環境條件的效應。一或更多個周遭環境條件可包含溫度改變或濕度改變之至少一者。
在前述範例電子裝置之任意者的範例電子裝置中,接近性偵測子系統由直流偏移調整接近性訊號,其中直流偏移係基於參考訊號。
在前述範例電子裝置之任意者的範例電子裝置中,接近性偵測子系統決定在接近性感測器的鄰近範圍中的物件是否在鄰近範圍內靜止,其中一或更多個物件識別訊號係取決於物件是否在接近性感測器的鄰近範圍中靜止。
在前述範例電子裝置之任意者的範例電子裝置中,接近性偵測子系統決定接近性感測器的鄰近範圍中的物件是否正在鄰近範圍內移動,其中一或更多個物件識別訊號係取決於物件是否正在接近性感測器的鄰近範圍內移動。
在前述範例電子裝置之任意者的範例電子裝置中,接近性偵測子系統決定經調整的接近性訊號是否滿足人體相關性條件,人體相關性條件指示人體組織在接近性感測器的鄰近範圍內,一或更多個物件識別訊號係取決於物件是否包含人體組織於接近性感測器的鄰近範圍內。
在前述範例電子裝置之任意者的範例電子裝置中,接近性偵測子系統偵測電子裝置的動作、決定偵測到的動作是否提升人體組織在接近性感測器的鄰近範圍內的可能性、並提升對於人體組織於接近性感測器的鄰近範圍中的偵測的信心。一或更多個物件識別訊號係取決於人體組織是否存在於接近性感測器的鄰近範圍中。
在前述範例電子裝置之任意者的範例電子裝置中,接近性偵測子系統輸出物件偵測訊號與人體偵測訊號作為一或更多個物件識別訊號,以識別電子裝置的接近性感測器的鄰近範圍中的物件類型。
在一範例方法中,從電子裝置的接近性感測器產生接近性訊號。接近性感測器的接近性訊號係取決於接近性感測器的一或更多個周遭環境條件,接近性訊號並取決於接近性感測器的範圍中的物件的存在。基於參考訊號從接近性訊號濾除一或更多個周遭環境條件的效應,以調整接近性訊號,參考訊號係從放置為鄰近RF發送器與接近性感測器的環境條件感測器產生。參考訊號係獨立於接近性感測器的範圍中的物件。基於經調整的接近性訊號,由一或更多個物件識別訊號傳訊通知該RF發送器,以調整該RF發送器的傳輸功率。
在前述範例方法之任意者的範例方法中,一或更多個周遭環境條件包含溫度改變或濕度改變之至少一者。
在前述範例方法之任意者的範例方法中,調整接近性訊號的調整接近性訊號步驟包含以下步驟:由直流偏移調整接近性訊號,直流偏移係基於參考訊號。
在前述範例方法之任意者的範例方法中,傳訊通知步驟包含以下步驟:決定接近性感測器的範圍中的物件是否在範圍內靜止。一或更多個物件識別訊號係取決於物件是否在接近性感測器的範圍中靜止。
在前述範例方法之任意者的範例方法中,傳訊通知步驟包含以下步驟:決定接近性感測器的範圍中的物件是否正在範圍內移動。一或更多個物件識別訊號係取決於物件是否正在接近性感測器的範圍內移動。
在前述範例方法之任意者的範例方法中,傳訊通知步驟包含以下步驟:決定經調整的接近性訊號是否滿足人體相關性條件,人體相關性條件指示人體組織在接近性感測器的範圍內。一或更多個物件識別訊號係取決於物件是否包含人體組織於接近性感測器的範圍內。
在前述範例方法之任意者的範例方法中,傳訊通知步驟包含以下步驟:偵測電子裝置的動作,決定偵測到的動作是否提升人體組織在接近性感測器的範圍內的可能性,並提升對於人體組織於接近性感測器的範圍中的偵測的信心。一或更多個物件識別訊號係取決於人體組織是否存在於接近性感測器的範圍中。
在前述範例方法之任意者的範例方法中,其中傳訊通知步驟包含以下步驟:輸出物件偵測訊號與人體偵測訊號作為一或更多個物件識別訊號,以識別電子裝置的接近性感測器的範圍中的物件類型。
另一範例電子裝置包含接近性感測器,以及周遭環境條件感測器、接近性偵測子系統、以及RF發送器。接近性感測器產生接近性訊號,接近性感測器的接近性訊號取決於接近性感測器上的一或更多個周遭環境條件以及對於接近性感測器的鄰近範圍中的物件的偵測。周遭環境條件感測器放置為鄰近接近性感測器,周遭環境條件感測器產生參考訊號。參考訊號係獨立於周遭環境條件感測器的鄰近範圍中的物件。接近性偵測子系統通訊耦合至接近性感測器與周遭環境條件感測器。接近性偵測子系統藉由從接近性訊號濾除一或更多個周遭環境條件的效應來調整接近性訊號。RF發送器通訊耦合至接近性感測器、周遭環境感測器以及接近性偵測子系統。RF發送器基於經調整的接近性訊號調整傳輸功率。
在前述範例電子裝置之任意者的範例電子裝置中,一或更多個周遭環境條件包含溫度改變或濕度改變之至少一者。
在前述範例電子裝置之任意者的範例電子裝置中,接近性偵測子系統由直流偏移調整接近性訊號。直流偏移係基於參考訊號。
另一範例裝置包含:產生構件,用於產生來自電子裝置的接近性感測器的接近性訊號;調整接近性訊號構件,用於調整接近性訊號;以及傳訊通知構件,用於傳訊通知RF發送器。接近性感測器的接近性訊號係取決於接近性感測器的一或更多個周遭環境條件,接近性訊號並取決於接近性感測器的範圍中的物件的存在。調整接近性訊號構件基於參考訊號從接近性訊號濾除一或更多個周遭環境條件的效應,以調整接近性訊號,參考訊號係從放置為鄰近RF發送器與接近性感測器的環境條件感測器產生。參考訊號係獨立於接近性感測器的範圍中的物件。傳訊通知構件,基於經調整的接近性訊號,由一或更多個物件識別訊號傳訊通知RF發送器,以調整RF發送器的傳輸功率。
在前述範例電子裝置之任意者的範例電子裝置中,一或更多個周遭環境條件包含溫度改變或濕度改變之至少一者。
在前述範例電子裝置之任意者的範例電子裝置中,調整接近性訊號構件由直流偏移調整接近性訊號。直流偏移係基於參考訊號。
在前述範例電子裝置之任意者的範例電子裝置中,傳訊通知構件決定接近性感測器的範圍中的物件是否在範圍內靜止。一或更多個物件識別訊號係取決於物件是否在接近性感測器的範圍中靜止。
在前述範例電子裝置之任意者的範例電子裝置中,傳訊通知構件決定接近性感測器的範圍中的物件是否正在範圍內移動。一或更多個物件識別訊號係取決於物件是否正在接近性感測器的範圍內移動。
在前述範例電子裝置之任意者的範例電子裝置中,傳訊通知構件決定經調整的接近性訊號是否滿足人體相關性條件,人體相關性條件指示人體組織在接近性感測器的範圍內。一或更多個物件識別訊號係取決於物件是否包含人體組織於接近性感測器的範圍內。
在前述範例電子裝置之任意者的範例電子裝置中,傳訊通知構件偵測電子裝置的動作、決定偵測到的動作是否提升人體組織在接近性感測器的範圍內的可能性、以及提升對於人體組織於接近性感測器的範圍中的偵測的信心。一或更多個物件識別訊號係取決於人體組織是否存在於接近性感測器的範圍中。
在前述範例電子裝置之任意者的範例電子裝置中,傳訊通知構件輸出物件偵測訊號與人體偵測訊號作為一或更多個物件識別訊號,以識別裝置的接近性感測器的範圍中的物件類型。
所說明並思及的實施例為根據實施發明的電腦系統的效能需求的選擇。再者,應了解到作業可由任何順序執行、依所需增加與省略,除非另外明確主張或者由申請專利範圍用語所固有必要化的特定順序。
上文的說明書、範例與資料提供了對於發明示例性具體實施例的結構與用途的完整說明。因為可作成發明的許多實施例而不脫離發明的精神與範圍,發明位於附加於此後的申請專利範圍。再者,不同具體實施例的結構特徵可被結合於另一實施例中,而不脫離所記載的申請專利範圍。
100‧‧‧系統
102‧‧‧電子裝置
104‧‧‧傳輸功率控制器
106‧‧‧天線
108‧‧‧天線
110‧‧‧顯示面板
112‧‧‧人體組織
114‧‧‧非人體物件
200‧‧‧系統
202‧‧‧電子裝置
204‧‧‧傳輸功率控制器
206‧‧‧RF發送器
208‧‧‧RF發送器
210‧‧‧顯示面板
212‧‧‧接近性感測器墊
214‧‧‧接近性感測器墊
216‧‧‧參考墊
300‧‧‧架構
302‧‧‧電容值感測電路
304‧‧‧電容值數化器
306‧‧‧SAR接近性偵測子系統
308‧‧‧主機硬體與軟體平台
310‧‧‧數據機
311‧‧‧數化器驅動器
312‧‧‧數據機驅動器
314‧‧‧硬體抽象層
316‧‧‧基於動作式人體偵測器
400‧‧‧SAR接近性偵測子系統
402‧‧‧功率管理電路
404‧‧‧電容值數化器
406‧‧‧自動調諧器
408‧‧‧SAR校正資料
410‧‧‧初始化器
412‧‧‧縮放器
414‧‧‧溫度與濕度濾波器
416‧‧‧基線調整器
418‧‧‧接近性變異值部件
420‧‧‧DC濾波器
422‧‧‧動態接近性偵測器
424‧‧‧靜態接近性偵測器
426‧‧‧邏輯OR運算子部件
428‧‧‧人體偵測器
430‧‧‧人體偵測聚合器
432‧‧‧指示符控制
500‧‧‧基於動作式人體偵測子系統
502‧‧‧加速度計驅動器
504‧‧‧感測器校正器
506‧‧‧向量量值計算器部件
508‧‧‧高通濾波器
510‧‧‧移動視窗積分器
512‧‧‧平滑濾波器
514‧‧‧活動狀態更新器
516‧‧‧人體偵測狀態更新器
518‧‧‧動作感測器融合部件
600-616‧‧‧作業
700‧‧‧電子裝置
702‧‧‧處理器
704‧‧‧記憶體
706‧‧‧顯示器
708‧‧‧其他介面
710‧‧‧作業系統
712‧‧‧應用程式
716‧‧‧電源供應
720‧‧‧定位系統
722‧‧‧加速度計
728‧‧‧存儲器
730‧‧‧通訊收發器
102‧‧‧電子裝置
104‧‧‧傳輸功率控制器
106‧‧‧天線
108‧‧‧天線
110‧‧‧顯示面板
112‧‧‧人體組織
114‧‧‧非人體物件
200‧‧‧系統
202‧‧‧電子裝置
204‧‧‧傳輸功率控制器
206‧‧‧RF發送器
208‧‧‧RF發送器
210‧‧‧顯示面板
212‧‧‧接近性感測器墊
214‧‧‧接近性感測器墊
216‧‧‧參考墊
300‧‧‧架構
302‧‧‧電容值感測電路
304‧‧‧電容值數化器
306‧‧‧SAR接近性偵測子系統
308‧‧‧主機硬體與軟體平台
310‧‧‧數據機
311‧‧‧數化器驅動器
312‧‧‧數據機驅動器
314‧‧‧硬體抽象層
316‧‧‧基於動作式人體偵測器
400‧‧‧SAR接近性偵測子系統
402‧‧‧功率管理電路
404‧‧‧電容值數化器
406‧‧‧自動調諧器
408‧‧‧SAR校正資料
410‧‧‧初始化器
412‧‧‧縮放器
414‧‧‧溫度與濕度濾波器
416‧‧‧基線調整器
418‧‧‧接近性變異值部件
420‧‧‧DC濾波器
422‧‧‧動態接近性偵測器
424‧‧‧靜態接近性偵測器
426‧‧‧邏輯OR運算子部件
428‧‧‧人體偵測器
430‧‧‧人體偵測聚合器
432‧‧‧指示符控制
500‧‧‧基於動作式人體偵測子系統
502‧‧‧加速度計驅動器
504‧‧‧感測器校正器
506‧‧‧向量量值計算器部件
508‧‧‧高通濾波器
510‧‧‧移動視窗積分器
512‧‧‧平滑濾波器
514‧‧‧活動狀態更新器
516‧‧‧人體偵測狀態更新器
518‧‧‧動作感測器融合部件
600-616‧‧‧作業
700‧‧‧電子裝置
702‧‧‧處理器
704‧‧‧記憶體
706‧‧‧顯示器
708‧‧‧其他介面
710‧‧‧作業系統
712‧‧‧應用程式
716‧‧‧電源供應
720‧‧‧定位系統
722‧‧‧加速度計
728‧‧‧存儲器
730‧‧‧通訊收發器
第1圖圖示說明用於在特定吸收率(SAR)標準背景內容下選擇性調整射頻(RF)傳輸功率的範例系統。
第2圖圖示說明用於在SAR標準背景內容下選擇性調整RF傳輸功率的另一範例系統。
第3圖圖示說明在SAR標準背景內容下選擇性調整RF傳輸功率的系統的範例架構。
第4圖圖示說明在SAR標準背景內容下選擇性調整RF傳輸功率的範例SAR接近性偵測子系統的部件。
第5圖圖示說明用於在SAR標準背景內容下選擇性調整RF傳輸功率的範例基於動作式人體偵測子系統的部件。
第6圖圖示說明用於在SAR標準背景內容下選擇性調整RF傳輸功率的範例作業。
第7圖圖示說明有用於在SAR標準背景內容下選擇性調整RF傳輸功率的範例電子裝置。
國內寄存資訊 (請依寄存機構、日期、號碼順序註記) 無
國外寄存資訊 (請依寄存國家、機構、日期、號碼順序註記) 無
(請換頁單獨記載) 無
100‧‧‧系統
102‧‧‧電子裝置
104‧‧‧傳輸功率控制器
106‧‧‧天線
108‧‧‧天線
110‧‧‧顯示面板
112‧‧‧人體組織
114‧‧‧非人體物件
Claims (20)
- 一種電子裝置,該電子裝置包含: 一RF發送器;一接近性感測器,該接近性感測器產生一接近性訊號,該接近性訊號取決於該接近性感測器的一或更多個周遭環境條件,該接近性訊號並取決於該接近性感測器的一鄰近範圍中的一物件的接近性;一接近性偵測子系統,該接近性偵測子系統通訊耦合至該接近性感測器與該RF發送器,該接近性偵測子系統藉由從該接近性訊號濾除該一或更多個周遭環境條件的效應來調整該接近性訊號,該經調整的接近性訊號由一或更多個物件識別訊號傳訊通知該RF發送器,以調整該RF發送器的傳輸功率。
- 如請求項1所述之電子裝置,該電子裝置進一步包含一周遭環境條件感測器,該周遭環境條件感測器放置為鄰近該RF發送器與該接近性感測器,該周遭環境條件感測器並通訊耦合至該接近性偵測子系統,該周遭環境條件感測器產生一參考訊號,該參考訊號係獨立於該周遭環境條件感測器的該鄰近範圍中的一物件,該接近性偵測子系統基於該參考訊號調整該接近性訊號,以從該接近性感測器濾除該一或更多個周遭環境條件的效應。
- 如請求項2所述之電子裝置,其中該一或更多個周遭環境條件包含一溫度改變或一濕度改變之至少一者。
- 如請求項1所述之電子裝置,其中該接近性偵測子系統由一直流偏移調整該接近性訊號,該直流偏移係基於該參考訊號。
- 如請求項1所述之電子裝置,其中該接近性偵測子系統決定在該接近性感測器的該鄰近範圍中的一物件是否在該鄰近範圍內靜止,該一或更多個物件識別訊號係取決於一物件是否在該接近性感測器的該鄰近範圍中靜止。
- 如請求項1所述之電子裝置,其中該接近性偵測子系統決定該接近性感測器的該鄰近範圍中的一物件是否正在該鄰近範圍內移動,該一或更多個物件識別訊號係取決於一物件是否正在該接近性感測器的該鄰近範圍內移動。
- 如請求項1所述之電子裝置,其中該接近性偵測子系統決定該經調整的接近性訊號是否滿足一人體相關性條件,該人體相關性條件指示人體組織在該接近性感測器的該鄰近範圍內,該一或更多個物件識別訊號係取決於一物件是否包含人體組織於該接近性感測器的該鄰近範圍內。
- 如請求項1所述之電子裝置,其中該接近性偵測子系統偵測該電子裝置的動作、決定該偵測到的動作是否提升人體組織在該接近性感測器的該鄰近範圍內的可能性、並提升對於人體組織於該接近性感測器的該鄰近範圍中的偵測的信心,該一或更多個物件識別訊號係取決於人體組織是否存在於該接近性感測器的該鄰近範圍中。
- 如請求項1所述之電子裝置,其中該接近性偵測子系統輸出一物件偵測訊號與一人體偵測訊號作為該一或更多個物件識別訊號,以識別該電子裝置的該接近性感測器的該鄰近範圍中的一物件類型。
- 一種方法,該方法包含以下步驟: 產生接近性訊號步驟,產生來自一電子裝置的一接近性感測器的一接近性訊號,該接近性感測器的該接近性訊號係取決於該接近性感測器的一或更多個周遭環境條件,該接近性訊號並取決於該接近性感測器的一範圍中的一物件的存在;調整接近性訊號步驟,基於一參考訊號從該接近性訊號濾除該一或更多個周遭環境條件的效應,以調整該接近性訊號,該參考訊號係從放置為鄰近一RF發送器與該接近性感測器的一環境條件感測器產生,該參考訊號係獨立於該接近性感測器的該範圍中的一物件;以及傳訊通知步驟,基於該經調整的接近性訊號,由一或更多個物件識別訊號傳訊通知該RF發送器,以調整該RF發送器的傳輸功率。
- 如請求項10所述之方法,其中該一或更多個周遭環境條件包含一溫度改變或一濕度改變之至少一者。
- 如請求項10所述之方法,調整該接近性訊號的該調整接近性訊號步驟包含以下步驟: 由一直流偏移調整該接近性訊號,該直流偏移係基於該參考訊號。
- 如請求項10所述之方法,其中該傳訊通知步驟包含以下步驟: 決定該接近性感測器的該範圍中的一物件是否在該範圍內靜止,該一或更多個物件識別訊號係取決於一物件是否在該接近性感測器的該範圍中靜止。
- 如請求項10所述之方法,其中該傳訊通知步驟包含以下步驟: 決定該接近性感測器的該範圍中的一物件是否正在該範圍內移動,該一或更多個物件識別訊號係取決於一物件是否正在該接近性感測器的該範圍內移動。
- 如請求項10所述之方法,其中該傳訊通知步驟包含以下步驟: 決定該經調整的接近性訊號是否滿足一人體相關性條件,該人體相關性條件指示人體組織在該接近性感測器的該範圍內,該一或更多個物件識別訊號係取決於一物件是否包含人體組織於該接近性感測器的該範圍內。
- 如請求項10所述之方法,其中該傳訊通知步驟包含以下步驟: 偵測該電子裝置的動作;決定該偵測到的動作是否提升人體組織在該接近性感測器的該範圍內的可能性;以及提升對於人體組織於該接近性感測器的該範圍中的偵測的信心,該一或更多個物件識別訊號係取決於人體組織是否存在於該接近性感測器的該範圍中。
- 如請求項10所述之方法,其中該傳訊通知步驟包含以下步驟: 輸出一物件偵測訊號與一人體偵測訊號作為該一或更多個物件識別訊號,以識別該電子裝置的該接近性感測器的該範圍中的一物件類型。
- 一種電子裝置,該電子裝置包含: 一接近性感測器,該接近性感測器產生一接近性訊號,該接近性感測器的該接近性訊號係取決於該接近性感測器上的一或更多個周遭環境條件以及對於該接近性感測器的一鄰近範圍中的一物件的偵測;一周遭環境條件感測器,該周遭環境條件感測器放置為鄰近該接近性感測器,該周遭環境條件感測器產生一參考訊號,該參考訊號係獨立於該周遭環境條件感測器的該鄰近範圍中的一物件;一接近性偵測子系統,該接近性偵測子系統通訊耦合至該接近性感測器與該周遭環境條件感測器,該接近性偵測子系統藉由從該接近性訊號濾除該一或更多個周遭環境條件的效應來調整該接近性訊號;以及一RF發送器,該RF發送器通訊耦合至該接近性感測器、該周遭環境感測器以及該接近性偵測子系統,該RF發送器基於該經調整的接近性訊號調整傳輸功率。
- 如請求項18所述之電子裝置,其中該一或更多個周遭環境條件包含一溫度改變或一濕度改變之至少一者。
- 如請求項18所述之電子裝置,其中該接近性偵測子系統由一直流偏移調整該接近性訊號,該直流偏移係基於該參考訊號。
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CN107005951B (zh) | 2020-07-03 |
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WO2016089714A1 (en) | 2016-06-09 |
EP3228132A1 (en) | 2017-10-11 |
US20160164563A1 (en) | 2016-06-09 |
EP3228132B1 (en) | 2020-02-12 |
KR102345448B1 (ko) | 2021-12-29 |
US9871545B2 (en) | 2018-01-16 |
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