TWI415357B - Non - contact power supply - Google Patents
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本發明係關於一種電能供應裝置，特別是一種透過電磁共振之非接觸式電能供應裝置。 The present invention relates to an electrical energy supply device, and more particularly to a non-contact electrical energy supply device that transmits electromagnetic resonance.
目前市面上的數位板都係搭配數位筆使用，當數位筆接近數位板時，數位筆會產生一電磁場，讓數位板可根據接收到電磁場的強度，來演算出數位筆目前的座標位置，再將該座標位置傳送到電腦端，以進行指標的控制。 At present, the digital tablet on the market is used with a digital pen. When the digital pen is close to the digital tablet, the digital pen generates an electromagnetic field, so that the tablet can calculate the current coordinate position of the digital pen according to the intensity of the received electromagnetic field, and then The coordinate position is transmitted to the computer for control of the indicator.
目前數位筆工作所需的電源主要使用二種方式取得供電：一種係利用電池供電，另一種則是使用電磁共振的方式來取得供電。若採用電池供電的方式，數位筆必須頻繁的更換電池，對使用者來說極不方便也不環保。因此採用電磁共振的供電方式，不僅在使用上較為方便，也對於環境較為友善。 At present, the power supply required for digital pen work mainly uses two methods to obtain power: one is to use battery power, and the other is to use electromagnetic resonance to obtain power. If the battery is used, the digital pen must be replaced frequently, which is extremely inconvenient and environmentally friendly for the user. Therefore, the use of electromagnetic resonance power supply is not only convenient to use, but also friendly to the environment.
但是目前數位筆與數位板的電磁共振供電相關技術中，數位板內會裝置發射天線，此發射天線必須發射夠大的磁場強度，才能使數位筆得到足夠的電壓。 However, in the current electromagnetic pulse power supply related technology of digital pen and digital tablet, a transmitting antenna is arranged in the digital board, and the transmitting antenna must emit a large magnetic field strength to obtain sufficient voltage for the digital pen.
一般而言，數位板的發射天線係環設於機體內部周圍，亦即發射天線繞設成一框狀，發射天線之訊號強度係沿著發射天線為中心而遞減，如此將使得數位板中央位置處的訊號較弱。 Generally, the transmitting antenna of the tablet is arranged around the inside of the body, that is, the transmitting antenna is arranged in a frame shape, and the signal strength of the transmitting antenna is decremented along the transmitting antenna, so that the central position of the tablet is made. The signal at the office is weak.
為了使發射天線所發射出的磁場強度能夠更為均勻，避免數位板中央訊號較弱的情況，已知技術中係在發射天線的下方設置一片高導磁金屬板，比如說鎳合金材料板材。這些高導磁金屬板係根據數位板機體大小而設計，也就是完全配合機體內部之面積，並使高導磁金屬板之範圍 大於發射天線之框形範圍，高導磁金屬板可以增益發射天線所發射之電磁波，即透過高導磁金屬板能夠強化發射天線訊號強度，進而使數位板中央位置處亦能夠有效地與數位筆電磁共振而供應所需電能。 In order to make the intensity of the magnetic field emitted by the transmitting antenna more uniform and avoid the weak signal in the center of the tablet, in the prior art, a high-magnetic metal plate, such as a nickel alloy material plate, is disposed under the transmitting antenna. These high-magnetic metal plates are designed according to the size of the tablet body, that is, fully fit the area inside the body, and the range of the high-magnetic metal plate Larger than the frame-shaped range of the transmitting antenna, the high-magnetic metal plate can enhance the electromagnetic wave emitted by the transmitting antenna, that is, the high-magnetic metal plate can strengthen the signal strength of the transmitting antenna, thereby enabling the digital pen to be effectively positioned with the digital pen at the central position. Electromagnetic resonance supplies the required electrical energy.
已知技術雖然解決了數位板與數位筆之間電磁共振的問題。然而，高導磁金屬板目前的單價仍然非常高，因此使用大面積的高導磁金屬板將會提高生產的成本。也就是說，在數位板的設計上，面臨到了效能與成本之間的技術衝突。 The known technique solves the problem of electromagnetic resonance between a tablet and a digital pen. However, the current unit price of high magnetic metal sheets is still very high, so the use of large areas of high magnetic metal sheets will increase the cost of production. In other words, in the design of the tablet, there is a technical conflict between performance and cost.
已知技術中，數位板之發射天線與高導磁金屬板在效能與成本間產生了技術衝突，因此本發明係提出一種改變發射天線與導磁構件配置關係之非接觸式電能供應裝置。 In the prior art, the transmitting antenna of the digital panel and the high magnetic conducting metal plate have a technical conflict between the performance and the cost. Therefore, the present invention proposes a non-contact power supply device that changes the configuration relationship between the transmitting antenna and the magnetically permeable member.
非接觸式電能供應裝置包括發射天線與導磁構件。發射天線以環繞方式形成一天線迴圈，並構成一迴圈範圍。導磁構件設置於發射天線的下方。導磁構件構成一導磁區域，並且導磁區域的至少一邊界落於迴圈範圍之內。 The contactless power supply device includes a transmitting antenna and a magnetic conductive member. The transmitting antenna forms an antenna loop in a surrounding manner and constitutes a loop range. The magnetically permeable member is disposed below the transmitting antenna. The magnetically permeable member constitutes a magnetically conductive region, and at least one boundary of the magnetically permeable region falls within the loop.
本發明的一實施例中，導磁區域的長度為迴圈範圍長度的二分之一，導磁區域的寬度為迴圈範圍寬度的四分之三，而導磁區域係位在迴圈範圍下方中央位置處。 In an embodiment of the invention, the length of the magnetic conductive region is one-half of the length of the loop region, the width of the magnetic conductive region is three-quarters of the width of the loop region, and the magnetic conductive region is in the loop region. Below the central location.
本發明的一實施例中，導磁區域的為迴圈範圍長度的二分之一，導磁區域的寬度大於迴圈範圍寬度，導磁區域位在迴圈範圍中央位置處，導磁區域之長邊落在迴圈範圍外，而導磁區域之寬邊落在迴圈範圍之內。 In an embodiment of the invention, the magnetic conductive region is one-half of the length of the loop region, the width of the magnetic conductive region is greater than the width of the loop region, and the magnetic conductive region is located at the center of the loop region, and the magnetic conductive region The long side falls outside the loop and the wide side of the magnetically conductive area falls within the loop.
本發明的一實施例中，導磁區域的長度大於迴圈範圍的長度，而導磁區域的寬度為迴圈範圍寬度的二分之一，導磁區域位在迴圈範圍中央位置處，導磁區域之寬邊落在迴圈範圍外，而導磁區域之長邊落在迴圈範圍之內。 In an embodiment of the invention, the length of the magnetic conductive region is greater than the length of the loop region, and the width of the magnetic conductive region is one-half of the width of the loop region, and the magnetic conductive region is located at the central position of the loop region. The wide side of the magnetic region falls outside the loop, and the long side of the magnetically conductive region falls within the loop.
本發明的一實施例中，導磁區域的長度同樣為迴圈範圍長度 的二分之一，導磁區域的寬度為迴圈範圍寬度的二分之一，導磁區域位在迴圈範圍中央位置處，且導磁區域之長邊與寬邊皆落在迴圈範圍之內。 In an embodiment of the invention, the length of the magnetically permeable region is also the length of the loop range One-half of the magnetic conductive region has a width which is one-half of the width of the loop region, the magnetic conductive region is located at the center of the loop region, and the long side and the wide side of the magnetic conductive region fall within the loop region. within.
根據本發明所提出之非接觸式電能供應裝置，只需要少面積的導磁構件，以降低生產成本，同時亦能使數位板中央訊號增強，達到增強效能的功效。因此，本發明可兼顧效能與成本之間的考量。 According to the non-contact power supply device proposed by the present invention, only a small area of the magnetic conductive member is needed to reduce the production cost, and at the same time, the central signal of the tablet can be enhanced to achieve the effect of enhancing performance. Therefore, the present invention can take into consideration the consideration between performance and cost.
10‧‧‧無線指向裝置 10‧‧‧Wireless pointing device
20‧‧‧數位板 20‧‧‧ digital tablet
200‧‧‧非接觸式電能供應裝置 200‧‧‧ Non-contact power supply device
202‧‧‧位置偵測裝置 202‧‧‧ position detection device
210‧‧‧發射天線 210‧‧‧transmit antenna
212‧‧‧天線迴圈 212‧‧‧Antenna loop
214‧‧‧迴圈範圍 214‧‧‧Return range
220‧‧‧導磁構件 220‧‧‧magnetic components
224‧‧‧導磁區域 224‧‧‧magnetic area
『第1圖』係為本發明具有數位板與指向裝置之外觀示意圖；『第2圖』係為本發明數位板之側視圖；『第3圖』係為本發明發射天線與導磁構件關係示意圖；『第4圖』係為本發明第一實施例之結構示意圖；『第5圖』係為本發明第二實施例之結構示意圖；『第6圖』係為本發明第三實施例之結構示意圖；『第7圖』係為本發明第四實施例之結構示意圖；以及『第8圖』係為本發明第五實施例之結構示意圖。 1 is a schematic view showing the appearance of a digital tablet and a pointing device according to the present invention; "2nd drawing" is a side view of the digital tablet of the present invention; and "Fig. 3" is a relationship between the transmitting antenna and the magnetic conductive member of the present invention. FIG. 4 is a schematic structural view of a first embodiment of the present invention; FIG. 5 is a schematic structural view of a second embodiment of the present invention; and FIG. 6 is a third embodiment of the present invention; FIG. 7 is a schematic structural view of a fourth embodiment of the present invention; and FIG. 8 is a schematic structural view of a fifth embodiment of the present invention.
以下在實施方式中係進一步詳細說明本發明之詳細特徵以及優點，其內容足以使任何熟習相關技藝者了解本發明之技術內容並據以實施，且根據本說明書所揭露之內容、申請專利範圍及圖式，任何熟習相關技藝者可輕易地理解本發明相關之目的及優點。 The detailed features and advantages of the present invention are described in the following detailed description of the embodiments of the present invention. The related objects and advantages of the present invention will be readily understood by those skilled in the art.
請參照『第1圖』與『第2圖』。『第1圖』係為具有數位板與指向裝置之外觀示意圖。『第2圖』係為數位板之側視圖。 Please refer to "1st picture" and "2nd picture". "Fig. 1" is a schematic view showing the appearance of a tablet and a pointing device. "Picture 2" is a side view of the tablet.
數位板20可連接至一電腦主機，用以輸入控制訊號至此電腦主機。在數位板20中，包括非接觸式電能供應裝置200與位置偵測裝置202。非接觸式電能供應裝置200可發出電磁波，傳送至指向裝置10。指向裝置10利用電磁共振方式，將電磁波轉換成電源，使指向裝置10可以進行 運作。數位板20的位置偵測裝置202則可用來偵測指向裝置10的位置，並將此位置轉換成控制訊號，傳送至電腦主機。 The tablet 20 can be connected to a computer host for inputting control signals to the host computer. In the tablet 20, a contactless power supply device 200 and a position detecting device 202 are included. The non-contact power supply device 200 can emit electromagnetic waves and transmit it to the pointing device 10. The pointing device 10 converts electromagnetic waves into a power source by means of electromagnetic resonance, so that the pointing device 10 can perform Operation. The position detecting device 202 of the tablet 20 can be used to detect the position of the pointing device 10 and convert the position into a control signal for transmission to the host computer.
非接觸式電能供應裝置200包括發射天線210與導磁構件220。發射天線210可由漆包線纏繞而成，或是設置於印刷電路板上。在餽入訊號後，發射天線210即可發射電磁波。其導磁構件220位於發射天線210的下方，且導磁構件220可以增益磁場強度。導磁構件220係可為一低頻磁場防護材料。此處所謂的低頻，係為30KHz(千赫)左右之頻率。導磁構件220所使用的材料，可為但不限於鎳合金。 The contactless power supply device 200 includes a transmitting antenna 210 and a magnetically permeable member 220. The transmitting antenna 210 may be wound by an enamel wire or placed on a printed circuit board. After the signal is fed, the transmitting antenna 210 can emit electromagnetic waves. Its magnetic conductive member 220 is located below the transmitting antenna 210, and the magnetic conductive member 220 can gain magnetic field strength. The magnetically permeable member 220 can be a low frequency magnetic field protection material. The low frequency referred to here is a frequency of about 30 kHz (kilohertz). The material used for the magnetic conductive member 220 may be, but not limited to, a nickel alloy.
位置偵測裝置202係位於導磁構件220上。位置偵測裝置202具有多個線圈與一微處理器。多個線圈可用來偵側指向裝置10所發出訊號的強弱，微處理器可根據訊號強弱來控制。位置偵測裝置202亦可設置於印刷電路板上。 The position detecting device 202 is located on the magnetically permeable member 220. The position detecting device 202 has a plurality of coils and a microprocessor. A plurality of coils can be used to detect the strength of the signal emitted by the pointing device 10, and the microprocessor can be controlled according to the strength of the signal. The position detecting device 202 can also be disposed on a printed circuit board.
為了使發射天線210向上發射的磁場強度能夠有效的增強，且降低數位板20的生產成本，本發明所提出之非接觸式電能供應裝置200說明如下。 In order to effectively increase the strength of the magnetic field emitted by the transmitting antenna 210 upward and to reduce the production cost of the tablet 20, the non-contact power supply device 200 proposed by the present invention is explained as follows.
請參照『第3圖』，係為本發明發射天線210與導磁構件220之配置關係。其中發射天線210以單圈或是多圈的方式環繞而形成天線迴圈212，並且繞於數位板20內部周圍。由天線迴圈212所圍繞而成的範圍，稱為迴圈範圍214。 Please refer to FIG. 3 for the arrangement relationship between the transmitting antenna 210 and the magnetic conductive member 220 of the present invention. The transmitting antenna 210 is surrounded by a single turn or a plurality of turns to form an antenna loop 212 and is wound around the inside of the tablet 20. The range surrounded by the antenna loop 212 is referred to as the loop range 214.
導磁構件220係構成導磁區域224，導磁區域224具有多個邊界，其中一邊界落於迴圈範圍214，而導磁區域224有部分位於迴圈範圍214內，並有部分位於迴圈範圍外。為提供有效之磁場強度並且適當的配置導磁構件220之尺寸及位置，請參閱以下實施例，而為清楚說明配置關係，在以下實施例中迴圈範圍212定義長邊L1、L2及寬邊W1、W2，導磁區域定義長邊L3、L4及寬邊W3、W4。 The magnetically permeable member 220 constitutes a magnetically conductive region 224 having a plurality of boundaries, wherein a boundary falls within the loop region 214, and the magnetically conductive region 224 is partially located within the loop region 214 and partially located in the loop Out of scope. In order to provide an effective magnetic field strength and appropriately configure the size and position of the magnetic conductive member 220, please refer to the following embodiments, and in order to clearly illustrate the arrangement relationship, the loop range 212 defines the long sides L1, L2 and the wide sides in the following embodiments. W1, W2, the magnetic conductive region defines the long sides L3, L4 and the wide sides W3, W4.
L1、L3定義為使用者操作方向的上方，L2、L4定義為使用者操作方向的下方，W1、W3定義為使用者操作方向的左方，W2、W4定 義為使用者操作方向的右方。 L1 and L3 are defined as the upper direction of the user's operation direction, L2 and L4 are defined as the lower side of the user's operation direction, and W1 and W3 are defined as the left side of the user's operation direction, and W2 and W4 are determined. It is the right side of the user's operation direction.
請參照『第4圖』所示本發明第一實施例，在第一實施例中，迴圈範圍214的長度與寬度被分割為四等分，導磁區域224的長度為迴圈範圍214長度的二分之一(L3=1/2 L1、L4=1/2 L2)，導磁區域224的寬度為迴圈範圍214寬度的四分之三(W3=3/4 W1、W4=3/4 W2)。而導磁區域224係位在迴圈範圍214下方中央位置處，即導磁區域224之長邊L3及寬邊W3、W4落在迴圈範圍214之內。本發明第一實施例適用於大尺寸的數位板20，比如說9英吋乘以12英吋尺寸大小的數位板20。 Referring to the first embodiment of the present invention shown in FIG. 4, in the first embodiment, the length and width of the loop range 214 are divided into four equal parts, and the length of the magnetic conductive region 224 is the length of the loop range 214. One-half (L3=1/2 L1, L4=1/2 L2), the width of the magnetic conductive region 224 is three-quarters of the width of the loop range 214 (W3=3/4 W1, W4=3/ 4 W2). The magnetically conductive region 224 is located at a central position below the loop range 214, that is, the long side L3 and the wide sides W3, W4 of the magnetic conductive region 224 fall within the loop range 214. The first embodiment of the present invention is applicable to a large-sized tablet 20, such as a 9-inch multiplied by a 12-inch tablet 20 in size.
請參照『第5圖』所示本發明第二實施例，在第二實施例中，迴圈範圍214的長度與寬度同樣被分割為四等分，導磁區域224的長度同樣為迴圈範圍214長度的二分之一(L3=1/2 L1、L4=1/2 L2)，導磁區域224的寬度大於迴圈範圍214寬度(W3>W1、W4>W2)。導磁區域224係位在迴圈範圍214中央位置處，但導磁區域224之長邊L3、L4落在迴圈範圍214外，而導磁區域224之寬邊W3、W4落在迴圈範圍214之內，即導磁區域224左方及右方落在迴圈範圍214之內。 Referring to the second embodiment of the present invention shown in FIG. 5, in the second embodiment, the length and width of the loop range 214 are equally divided into quarters, and the length of the magnetic conductive region 224 is also the loop range. One-half of the length of 214 (L3 = 1/2 L1, L4 = 1/2 L2), the width of the magnetically conductive region 224 is greater than the width of the loop range 214 (W3 > W1, W4 > W2). The magnetic conductive region 224 is located at the central position of the loop range 214, but the long sides L3, L4 of the magnetic conductive region 224 fall outside the loop range 214, and the wide sides W3, W4 of the magnetic conductive region 224 fall within the loop range. Within 214, the left and right sides of the magnetically conductive region 224 fall within the loop extent 214.
請參照『第6圖』所示本發明第三實施例，在第三實施例中，迴圈範圍214的長度與寬度同樣被分割為四等分，導磁區域224的長度大於迴圈範圍214的長度(L3>L1、L4>L2)，而導磁區域224的寬度為迴圈範圍214寬度的二分之一(W3=1/2 W1、W4=1/2 W2)。導磁區域224係位在迴圈範圍214中央位置處，但導磁區域224之寬邊W3、W4落在迴圈範圍214外，而導磁區域224之長邊L3、L4落在迴圈範圍214之內，即導磁區域224上方及下方落在迴圈範圍214之內。 Referring to the third embodiment of the present invention shown in FIG. 6, in the third embodiment, the length and width of the loop range 214 are equally divided into quarters, and the length of the magnetic conductive region 224 is greater than the loop range 214. The length (L3 > L1, L4 > L2), and the width of the magnetic conductive region 224 is one-half of the width of the loop range 214 (W3 = 1/2 W1, W4 = 1/2 W2). The magnetic conductive region 224 is located at the central position of the loop range 214, but the wide sides W3, W4 of the magnetic conductive region 224 fall outside the loop range 214, and the long sides L3, L4 of the magnetic conductive region 224 fall within the loop range Within 214, the magnetically conductive region 224 is above and below the loop region 214.
請參照『第7圖』所示本發明第四實施例，在第四實施例中，迴圈範圍214的長度與寬度同樣被分割為四等分，導磁區域224的長度同樣為迴圈範圍214長度的二分之一(L3=1/2 L1、L4=1/2 L2)，而導磁區域224的寬度為迴圈範圍214寬度的二分之一(W3=1/2 W1、W4=1/2 W2)。導磁區域224係位在迴圈範圍214中央位置處，且導磁區域224之長邊L3、L4與 寬邊W3、W4皆落在迴圈範圍214之內，即導磁區域224上方、下方、左方及右方皆落在迴圈範圍214之內。本發明第四實施例適用於小尺寸的數位板20，比如說3英吋乘以4英吋尺寸大小的數位板。 Referring to the fourth embodiment of the present invention shown in FIG. 7, in the fourth embodiment, the length and width of the loop range 214 are equally divided into quarters, and the length of the magnetic conductive region 224 is also the loop range. One-half of the length of 214 (L3 = 1/2 L1, L4 = 1/2 L2), and the width of the magnetic conductive region 224 is one-half of the width of the loop range 214 (W3 = 1/2 W1, W4) =1/2 W2). The magnetically conductive region 224 is located at a central position of the loop region 214, and the long sides L3, L4 of the magnetically conductive region 224 are The wide sides W3 and W4 all fall within the loop range 214, that is, the upper, lower, left and right sides of the magnetic conductive region 224 fall within the loop range 214. The fourth embodiment of the present invention is applicable to a small-sized tablet 20, such as a tablet 3 inches multiplied by a 4 inch size.
請參照『第8圖』所示本發明第五實施例，在第五實施例中，天線迴圈212可以根據實際數位板20機體的形狀而設置，亦即除了可以矩形之方式圍繞外，亦可以其他形狀進行圍繞，比如圖中所示的橢圓形。同樣的，導磁區域224亦有邊界落於迴圈範圍214之內。亦即第五實施例可以搭配前述第一至第四實施例之導磁區域224配置關係。 Referring to the fifth embodiment of the present invention shown in FIG. 8, in the fifth embodiment, the antenna loop 212 can be set according to the shape of the actual tablet 20 body, that is, in addition to being rectangular. It can be surrounded by other shapes, such as the ellipse shown in the figure. Similarly, the magnetically conductive region 224 also has a boundary that falls within the loop extent 214. That is, the fifth embodiment can be matched with the magnetic conductive regions 224 in the first to fourth embodiments.
為證明本發明確實可以達成降低成本並達到增加效能之功效，茲針對本發明第一實施例與第二實施例進行實驗，其中在迴圈範圍214內等距分佈九個測試點(由左至右，由上至下)，發射天線210所產生之充電電壓必須大於0.8V，無線指向裝置10方能利用電磁共振方式，將電磁波轉換成電源，使無線指向裝置10可以進行運作，經實測數據如下：
經實測得知，本發明所提出之非接觸式電能供應裝置，只需要少面積的導磁構件，以降低生產成本，同時亦能使數位板中央訊號增強，達到增強效能的功效。因此，本發明可兼顧效能與成本之間的考量。 According to the actual measurement, the non-contact power supply device proposed by the invention only needs a small area of the magnetic conductive member to reduce the production cost, and at the same time, the central signal of the tablet can be enhanced to achieve the effect of enhancing performance. Therefore, the present invention can take into consideration the consideration between performance and cost.
雖然本發明以前述之實施例揭露如上，然其並非用以限定本發明。在不脫離本發明之精神和範圍內，所為之更動與潤飾，均屬本發明之專利保護範圍。關於本發明所界定之保護範圍請參考所附之申請專利範圍。 Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. It is within the scope of the invention to be modified and modified without departing from the spirit and scope of the invention. Please refer to the attached patent application for the scope of protection defined by the present invention.
20‧‧‧數位板 20‧‧‧ digital tablet
210‧‧‧發射天線 210‧‧‧transmit antenna
212‧‧‧天線迴圈 212‧‧‧Antenna loop
214‧‧‧迴圈範圍 214‧‧‧Return range
220‧‧‧導磁構件 220‧‧‧magnetic components
224‧‧‧導磁區域 224‧‧‧magnetic area
Claims (8)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW99130372A TWI415357B (en) | 2010-09-08 | 2010-09-08 | Non - contact power supply |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| TW99130372A TWI415357B (en) | 2010-09-08 | 2010-09-08 | Non - contact power supply |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| TW201212457A TW201212457A (en) | 2012-03-16 |
| TWI415357B true TWI415357B (en) | 2013-11-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| TW99130372A TWI415357B (en) | 2010-09-08 | 2010-09-08 | Non - contact power supply |
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| Country | Link |
|---|---|
| TW (1) | TWI415357B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWI471763B (en) * | 2012-04-25 | 2015-02-01 | Kye Systems Corp | Control device and pointing input apparatus using the same |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7180503B2 (en) * | 2001-12-04 | 2007-02-20 | Intel Corporation | Inductive power source for peripheral devices |
| TW200917612A (en) * | 2007-07-11 | 2009-04-16 | Seiko Epson Corp | Coil unit and electronic instrument |
-
2010
- 2010-09-08 TW TW99130372A patent/TWI415357B/en not_active IP Right Cessation
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US7180503B2 (en) * | 2001-12-04 | 2007-02-20 | Intel Corporation | Inductive power source for peripheral devices |
| TW200917612A (en) * | 2007-07-11 | 2009-04-16 | Seiko Epson Corp | Coil unit and electronic instrument |
Also Published As
| Publication number | Publication date |
|---|---|
| TW201212457A (en) | 2012-03-16 |
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