TWM450790U - Memory card capable of supporting Near field communication of single line protocol - Google Patents

Description

Memory card for near field communication supporting single line communication protocol

The present invention relates to a memory card, which is mainly used for supporting near-field communication of a single-wire communication protocol, and particularly includes a power protection unit to prevent a short circuit between the power management unit and the single-wire communication protocol contact module, and to prevent leakage.

In the past ten years, mobile phones have become an essential electronic product for everyone. With the development of mobile phone products, in addition to the most basic call functions, there are more and more functions such as recording, video recording, photo shooting and entertainment. Memory card to provide storage of various audio and video entertainment files.

In addition, the current development of e-wallets has been very frequent in the market, such as the Taipei MRT leisure card, Watson's small rapid consumption, which are all electromagnetic induction to the near field communication, mainly in the consumer The card in the hand has a chip, and can be powered by an external near field device, and then stored, debited, etc. transactions.

The NFC phone, which combines mobile phones with near-field communication, will be the trend of small-scale consumption in the future, and it needs to ensure data security components to protect the data security of consumption. Currently, Google's NFC mobile phone supports single-line communication ( Single Wire protocol) The SWP-SIM card acts as a secure element. However, the banking industry cannot write personalized information for SWP-SIM cards as a custom. Therefore, based on versatility, it has developed support for single-line communication for NFC mobile phones. Memory card.

However, usually the memory card supply voltage is usually directly connected to the power supply of the 3C product, and it is easy to generate a near field communication chip directly connected to the voltage source, and a short circuit condition may cause the security data to be damaged or even the memory card or the 3C product to be damaged. . In addition, since the near-field communication chip and the power supply of the 3C product are directly turned on, a leakage current may occur, and the driving power is insufficient, and the phenomenon that the near-field communication or the memory cannot be driven is generated.

Therefore, there is a need for a design that can connect the near field communication chip to the original product power supply to avoid short circuit and prevent leakage.

The main purpose of this creation is to provide a memory card that supports near field communication of a single line communication protocol, and the memory card is mainly used for a device having a near field communication function, such as a mobile phone, a camera, a multimedia player, a tablet computer, etc., the memory The card comprises a power management unit, an interface control unit, a data storage unit, a power protection unit and a smart unit. The power management unit is connected to the memory card voltage source of the device having the near field communication function to receive the memory card. Connect the voltage of 埠. The interface control unit is connected to the power management unit and the data input/output interface of the memory card, and is powered by the power management unit, and receives input and output of data from the data input/output interface of the memory card, and issues an execution command. The data storage unit is a flash memory for storing data, is connected to the interface control unit, receives an execution command from the interface control unit, and reads and writes data. And erase.

The power protection unit is electrically connected to the power management unit and the near-field voltage source to prevent a short circuit between the power management unit and the near field voltage source of the near field communication unit, and to prevent a near field voltage source or a power management unit from generating a leakage. Various problems caused. The intelligent unit is connected to the power protection unit and the single-wire communication protocol input/output interface, and is powered by the power protection unit, and is connected to the near field communication unit by a single wire protocol (SWP) to receive the external near field. The signal of the device, the smart unit is used to encrypt/decrypt the input or read data command of the single-line communication protocol input/output interface to avoid the transaction data being stolen.

The power management unit, the interface control unit, and the power protection unit may be separate wafers or include at least two of a power management unit, an interface control unit, and a power protection unit on a wafer.

The feature of this creation is that the memory card of the near field communication supporting the one-line communication protocol is a commonly used Micro-SD standard size specification, and is mainly used for near field communication functions such as mobile phones, cameras, multimedia players, tablet computers, and the like. The device prevents the direct electrical connection from forming a short circuit by placing the power protection unit between the power management unit and the near-field voltage source of the device having the near field communication function, and also avoids the power management unit directly connecting with the smart unit. Preventing any excessive voltage and current surges causes data corruption in the smart unit. In addition, the setting of the power protection unit can prevent the leakage problem of the power management unit and the near-field voltage source, and solve the problem that the near field communication cannot be driven or cannot be compared. The surface control unit or smart unit provides sufficient power.

The implementation of the present invention will be described in more detail below with reference to the drawings and component symbols, so that those skilled in the art can implement the present specification after studying the present specification.

Referring to the first figure, the unit diagram of the memory card of the near field communication supporting the one-line communication protocol of the present invention. The memory card device 1 of the present invention is mainly used for a device 100 having a near field communication function, such as a mobile phone, a camera, a multimedia player, a tablet computer and the like. The device 100 with near field communication function includes a memory card port 110 and a near field communication unit 120. The memory card port 110 includes a memory card voltage source 111 and a memory card data input and output interface 113, and the near field communication unit. 120 includes a near field voltage source 121 and a single line communication protocol input and output interface 123.

The memory card 1 supporting the near field communication of the single line communication protocol includes a power management unit 10, an interface control unit 20, a data storage unit 30, a power protection unit 40, and a smart unit 50, and a power management unit 10 and a near The memory card voltage source 111 of the field communication function device 100 is connected to accept the voltage from the memory card port 110. The interface control unit 20 is connected to the power management unit 10, the memory card data input/output interface 113, and the smart unit 50. The interface control unit 20 is powered by the power management unit 10, and receives input and output of data from the memory card data input/output interface 113. And issuing an execution command, and the interface control unit 20 can distinguish the command, and then separately for the smart list The element 50 or the data storage unit 30 performs control. The data storage unit 30 is a flash memory for storing data, is connected to the interface control unit 20, receives an execution command from the interface control unit 20, and performs reading, writing, and erasing of data. The smart unit 50 is An encryption/decryption circuit, the interface between the interface control unit 20 and the smart unit 50 can be a communication interface such as ISO7816, SPI, GPIO, or I2C.

The power protection unit 40 is electrically connected to the power management unit 10 and the near-field voltage source 121 to prevent the power supply management unit 10 and the near-field voltage source 121 of the near-field communication unit 120 from being directly electrically connected to form a short circuit, and to prevent the near-field voltage source 121. Or the power management unit 10 generates various problems caused by leakage. The smart unit 50 is connected to the power protection unit 40 and the single-line communication protocol input/output interface 123, and is powered by the power protection unit 40, and is connected to the near field communication unit 120 by a single wire protocol (SWP). Receiving the signal from the external near field device, the smart unit 50 can encrypt or decrypt the input or read data command of the single line protocol input/output interface 123 or the data input and read by the interface control unit to avoid transaction data. Was stolen.

The power management unit 10, the interface control unit 20, and the power protection unit 40 may be separate wafers or include at least two of the power management unit 10, the interface control unit 20, and the power protection unit 40 on a wafer.

The feature of this creation is that the memory card of the near field communication supporting the one-line communication protocol is a commonly used Micro-SD standard size specification, mainly used as a hand. A device 100 having a near field communication function of a machine, a camera, a multimedia player, a tablet, etc., is disposed between the power management unit 10 and the near field voltage source 121 of the device 100 having a near field communication function. The electrical connection is prevented from being directly connected to form a short circuit, and the power management unit 10 is prevented from directly connecting to the smart unit 50, and any excessive voltage and current surges are prevented from causing data corruption in the smart unit 50. In addition, the setting of the power protection unit 40 can prevent the leakage problem of the power management unit 10 and the near-field voltage source 121, and solve the problem that the near-field communication cannot be driven or the interface control unit 20 or the smart unit 50 cannot be supplied with sufficient power. problem.

The above is only a preferred embodiment for explaining the present invention, and is not intended to impose any form of restriction on the present creation, so that any modification or alteration relating to the creation in the same new spirit is made. , should still be included in the scope of protection of this creative intent.

1‧‧‧ Memory card for near field communication supporting single line communication protocol

10‧‧‧Power Management Unit

20‧‧‧Interface Control Unit

30‧‧‧Data storage unit

40‧‧‧Power protection unit

50‧‧‧Smart Unit

100‧‧‧Devices with near field communication

110‧‧‧ Memory Card Connection埠

111‧‧‧ memory card voltage source

113‧‧‧Memory card data input and output interface

120‧‧‧ Near Field Communication Unit

121‧‧‧ Near-field voltage source

123‧‧‧One-line communication protocol input and output interface

The first picture is a schematic diagram of the memory card of the near field communication supporting the one-line communication protocol.

1‧‧‧ Memory card for near field communication supporting single line communication protocol

10‧‧‧Power Management Unit

20‧‧‧Interface Control Unit

30‧‧‧Data storage unit

40‧‧‧Power protection unit

50‧‧‧Smart Unit

100‧‧‧Devices with near field communication

110‧‧‧ Memory Card Connection埠

111‧‧‧ memory card voltage source

113‧‧‧Memory card data input and output interface

120‧‧‧ Near Field Communication Unit

121‧‧‧ Near-field voltage source

123‧‧‧One-line communication protocol input and output interface

Claims (6)

A memory card for supporting near-field communication of a single-line communication protocol, for a device having a near field communication function, the memory card supporting the near field communication of the single-wire communication protocol includes: a power management unit, and the near field communication function a memory card voltage source of the device is connected to receive the voltage from a memory card port; an interface control unit is connected to the power management unit and a memory card data input and output interface, and is powered by the power management unit, and The data input/output interface of the memory card receives input and output of the data, and issues an execution command; a data storage unit is a flash memory for storing data, is connected to the interface control unit, and receives the control unit from the interface. Executing a command to read, write, and erase data; a power protection unit electrically connecting to the power management unit and a near field voltage source of a near field communication unit to prevent the power management unit from The near field voltage source is directly electrically connected to form a short circuit and prevents the near field voltage source or the power management unit from generating And a smart unit, connected to the power protection unit and the single-line communication protocol input/output interface of the near-field communication unit, powered by the power protection unit, and connected to the near-field communication unit by a single-wire communication protocol a command for receiving a signal from an external near field device and connecting with the interface control unit to receive a data input/output interface of the memory card for inputting and reading from the input/output interface or control unit of the single-wire communication protocol Command encryption/decryption to avoid transaction funds It is expected to be stolen. The memory card of the near field communication supporting the one-line communication protocol described in claim 1, wherein the device having the near field communication function includes the memory card port and the near field communication unit, and the memory card port includes the The memory card voltage source and the memory card data input and output interface, and the near field communication unit includes the near field voltage source and the single line communication protocol input and output interface. The memory card of the near field communication supporting the one-line communication protocol described in claim 2, wherein the device having the near field communication function is a mobile phone, a camera, a multimedia player or a tablet computer. The memory card of the near field communication supporting the one-wire communication protocol described in claim 1, wherein the power management unit, the interface control unit, and the power protection unit are independent chips. The memory card of the near field communication supporting the one-wire communication protocol described in claim 1, wherein at least two of the power management unit, the interface control unit, and the power protection unit are formed together on a wafer. A memory card for a near field communication supporting a one-line communication protocol as described in claim 1 of the patent application, wherein the memory card for the near field communication supporting the one-line communication protocol is Micro-SD standard size specifications.