TWI718601B - Card reader, data reading and writing system, and reading and writing method thereof - Google Patents

Abstract

A card reader, a data reading and writing system, and a reading and writing method thereof are provided. The data reading and writing system is adapted to be connected to a host, so that the host can read and write data to an memory card through the data reading and writing system. The host uses one of a first type of communication protocol or a second type of communication protocol. The data reading and writing system includes a protocol determination controller, a communication interface controller, and a memory card controller. The protocol determination controller obtains a determination message of the host to determine that the host uses the first type of communication protocol or the second type of communication protocol.

Description

Card reader, data reading and writing system and reading and writing method thereof

The present disclosure relates to a reading and writing system for a memory device, in particular to a card reader, a data reading and writing system and a reading and writing method that can automatically determine the communication protocol.

With the development of computer technology, many current electronic devices or non-electronic devices have built-in computing systems to provide more functions and performance. In order to expand the data storage capacity of the computing system or to facilitate the transfer and storage of data, the computing system can also be connected to a portable storage medium in addition to the built-in data storage device. The computing system usually reads and writes to the data storage device through a built-in or external read-write system.

At present, there are many different computing systems, which run their own operating systems and use different communication protocols. In the past, different computing systems also used different communication hardware interfaces. Therefore, the data reading and writing system only needs to provide corresponding communication protocols for different communication interfaces. However, in order to improve convenience, the communication interface will be integrated or unified. In this way, it is no longer possible to distinguish the used communication protocol by the difference of the communication hardware interface.

In order to solve the above-mentioned problems of the conventional technology, the purpose of the present disclosure is to provide a card reader, a data reading and writing system and a reading and writing method thereof, which can effectively solve the problem that the communication protocol cannot be distinguished in the prior art.

In order to achieve the above object, the present disclosure provides a data reading and writing system suitable for connecting with a host so that the host can read and write data to an external memory card through the data reading and writing system, wherein the host uses a first type of communication Protocol or one of a second type of communication protocol, the data reading and writing system includes a protocol judgment controller, a communication interface controller, and a memory card controller. The communication interface controller is electrically connected to the protocol judgment controller and is suitable for communicating with the host. The memory card controller is electrically connected to the protocol judgment controller and the communication interface controller, and controls the host to read and write data on the external memory card. The protocol determination controller obtains determination information of the host to determine whether the host uses the first communication protocol or the second communication protocol.

In one of the embodiments of the present disclosure, the protocol judgment controller includes a micro-processing unit. The micro-processing unit receives the determination information through the communication interface controller. When the determination information of the host is a first obtaining description command, the protocol determination controller determines that the host uses the first communication protocol. The micro-processing unit enumerates the first communication protocol to communicate with the host. When the determination information of the host is not the first obtaining description command, the protocol determination controller determines that the host uses the second communication protocol. The micro-processing unit enumerates the second communication protocol to communicate with the host.

In one of the embodiments of the present disclosure, when the data read-write system sequentially receives the first get description command, a set address command, and a second get description command from the host. The determination information is the first acquisition instruction. The protocol determination controller determines that the host uses the first communication protocol according to the determination information. When the data read-write system sequentially receives the set address command and the second get description command from the host. The determination information is the setting address command. The protocol determination controller presets the host to use the second communication protocol according to the determination information.

In one of the embodiments of the present disclosure, after the data read-write system is connected to the host, it sequentially receives the initialization command and the cable reset command sent by the host, and the protocol determines that the controller determines that the host is connected to the cable A command sent after the reset command is the determination information.

In one of the embodiments of the present disclosure, when the protocol determining controller determines that the host uses the second communication protocol for communication, the protocol determining controller defaults to receiving the second obtaining instruction command from the host , Receive a configuration command and a protocol execution authentication command. When the protocol judges that the controller waits for the protocol execution authentication command of the host for more than a preset time, the micro-processing unit changes to list the first communication protocol to communicate with the host.

In one of the embodiments of the present disclosure, the data reading and writing system further includes a USB transceiver unit interface electrically connected to the communication interface controller, a high-speed/full-speed transmission physical layer electrically connected to the USB transceiver unit interface, and The buffer unit is electrically connected to the memory card controller and the communication interface controller, an ultra-high-speed transmission physical layer, an ultra-high-speed device is electrically connected to the ultra-high-speed transmission physical layer and the buffer unit, and a first flash storage unit It is electrically connected to the micro-processing unit and stores a program for determining the communication protocol of the host. The communication interface controller communicates with the host through the USB transceiver unit interface, the high-speed/full-speed transmission physical layer, the ultra-high-speed device, and the ultra-high-speed transmission physical layer. The host reads and writes the external memory card through the control of the micro-processing unit.

In one of the embodiments of the present disclosure, the protocol judgment controller includes a micro processing unit and a power transmission micro processing unit. When the data reading and writing system is connected to the host, the power transmission micro-processing unit requests the host to provide the determination information. The determination information is the product identification data and supplier identification data of the host. The micro-processing unit determines whether the host uses the first communication protocol or the second communication protocol.

In one of the embodiments of the present disclosure, when the micro-processing unit determines that the host uses the first communication protocol, the micro-processing unit controls the interface control unit to list the first communication protocol to communicate with the host. When the micro-processing unit determines that the host uses the second communication protocol, the micro-processing unit controls the interface control unit to list the second communication protocol to communicate with the host. The product identification data and supplier identification data of the host include product data or operating system data.

In one of the embodiments of the present disclosure, the data reading and writing system further includes a power transmission module. The power transmission module includes the power transmission micro-processing unit, a C-type and two-way marking code physical layer, and a second fast The flash storage unit stores a program for requesting the host to provide the determination information to determine the power supply voltage. The power transmission micro-processing unit is used to control the C-type and two-way marking code physical layer to communicate with the host. The data reading and writing system further includes a USB transceiver unit interface electrically connected to the communication interface controller, a high-speed/full-speed transmission physical layer electrically connected to the USB transceiver unit interface, and a buffer unit electrically connected to the memory card controller And the communication interface controller, an ultra-high-speed transmission physical layer, an ultra-high-speed device electrically connected to the ultra-high-speed transmission physical layer and the buffer unit, and a first flash storage unit electrically connected to the micro-processing unit to store a Procedure to determine the communication protocol of the host. The communication interface controller communicates with the host through the control of the micro-processing unit. The host reads and writes the external memory card through the ultra-high-speed device and the ultra-high-speed transmission physical layer.

In one of the embodiments of the present disclosure, the protocol determining controller includes a micro-processing unit to determine whether the data reading and writing system has a power transmission module after the data reading and writing system is connected to the host. When the data read-write system has the power transmission module, the micro-processing unit requires the power transmission module to provide the obtained product identification data and supplier identification data, so as to determine whether the host uses the first communication protocol or the The second communication protocol. When the data reading and writing system does not have the power transmission module, the micro-processing unit directly receives and determines the determination information of the host.

In one of the embodiments of the present disclosure, when the data reading and writing system does not have the power transmission module, the micro-processing unit directly receives the determination information of the host through the communication interface controller. When the determination information of the host is a first obtaining description command, the micro-processing unit determines that the host uses the first communication protocol. When the determination information of the host is not the first obtaining description command, the micro-processing unit determines that the host uses the second communication protocol for communication.

In one of the embodiments of the present disclosure, the communication interface controller communicates with the host through a USB communication interface.

The present disclosure also provides a card reader suitable for connecting with a host so that the host can read and write data to an external memory card through the card reader, wherein the host uses a first communication protocol or a second communication One of the agreements. The card reader includes a protocol judgment controller, a communication interface controller, a memory card controller and a USB communication interface. The communication interface controller is electrically connected to the protocol judgment controller and communicates with the host. The memory card controller is electrically connected to the protocol judgment controller and the communication interface controller and controls the host to read and write data on the external memory card. The USB communication interface is electrically connected to the communication interface controller. The protocol determination controller obtains determination information of the host to determine whether the host uses the first communication protocol or the second communication protocol.

In the card reader of one of the embodiments of the present disclosure, the protocol determining controller includes a micro-processing unit for enumerating the first communication protocol or the second communication protocol to communicate with the host. When the determination information of the host is a first obtaining description command, the protocol determination controller determines that the host uses the first communication protocol. When the determination information of the host is not the first obtaining description command, the protocol determination controller determines that the host uses the second communication protocol.

In the card reader of one of the embodiments of the present disclosure, the protocol determination controller includes a micro-processing unit and a power transmission micro-processing unit. When the card reader is connected to the host, the power transmission micro-processing unit requires the host to provide the determination information to determine the power supply voltage. The micro-processing unit determines whether the host uses the first communication protocol or the second communication protocol. The determination information is at least one of product identification data and supplier identification data of the host.

The present disclosure also provides a reading and writing method of a data reading and writing system, which is used for reading and writing data on an external memory card. The method includes: providing a data reading and writing system, the data reading and writing system includes a protocol judgment controller, a communication interface controller, and a memory card controller, the communication interface controller is electrically connected to the protocol judgment controller, and The memory card controller is electrically connected to the protocol judgment controller and the communication interface controller; the data reading and writing system is electrically connected to a host, and the communication interface controller communicates with the host, wherein the host uses the first One of a communication protocol or a second communication protocol; the protocol determination controller obtains a determination information of the host; the protocol determination controller determines that the host uses the first communication protocol or the second communication protocol based on the determination information A communication protocol; and the protocol judgment controller enumerates the first communication protocol or the second communication protocol used by the host, so that the host can read and write data on the external memory card.

In one of the embodiments of the present disclosure, the protocol determining controller includes a micro-processing unit, and determining that the host uses the first communication protocol or the second communication protocol includes multiple steps. The steps include: determining whether the determination information is a first obtaining description command; if the determining information is the first obtaining description command, determining that the host uses the first communication protocol, and the micro-processing unit lists the first communication protocol A communication protocol communicates with the host; and if the determination information is not the first acquisition instruction command, it is determined that the host uses the second communication protocol, and the micro-processing unit lists the second communication protocol to communicate with the host.

In the method for reading and writing a data reading and writing system in one of the embodiments of the present disclosure, if the data reading and writing system sequentially receives the first obtaining description command, a setting address command and a second obtaining description command from the host Time. Then the protocol judgment controller judges that the host uses the first communication protocol according to the received first acquisition instruction command, and the host uses the first communication protocol to read and write and is electrically connected to the external of the data reading and writing system Memory card. If the data read-write system sequentially receives the set address command and the second get description command from the host. Then the protocol judgment controller presets the host to use the second communication protocol according to the received address setting instruction.

In the reading and writing method of the data reading and writing system in one of the embodiments of the present disclosure, the protocol determining controller further includes a plurality of steps after determining that the host uses the second communication protocol, and these steps include: It is assumed that a protocol execution authentication command sent by the host is received within the preset time; if the protocol execution authentication command sent by the host is received within the preset time, it is confirmed that the host uses the second communication protocol, and the host uses The second communication protocol reads and writes the external memory card; if the protocol execution authentication command sent by the host is not received within the preset time, the data reading and writing system will instead list the first communication protocol and the The host communicates.

In the reading and writing method of the data reading and writing system in one of the embodiments of the present disclosure, after the data reading and writing system receives the second obtaining instruction command from the host, the protocol determining controller receives a setting configuration command from the host .

In the reading and writing method of the data reading and writing system in one of the embodiments of the present disclosure, it further includes a plurality of steps before obtaining the determination information of the host. The steps include: the protocol determination controller receives an initialization command from the host ; And the agreement determines that the controller receives a cable reset command from the host. The protocol judgment controller recognizes that the command from the host received after the cable reset command is the judgment information.

In one of the embodiments of the present disclosure, the step of changing the data reading and writing system to enumerate the first communication protocol to communicate with the host includes: the protocol determines that the controller receives the cable reset command from the host again; The protocol determines that the controller re-receives the host’s setting address command; the protocol determines that the controller re-receives the host’s acquisition instruction; the protocol determines that the controller re-receives the host’s setting configuration command; and the host uses the A communication protocol (MSC) reads and writes the external memory card.

In the read-write method of the data read-write system in one of the embodiments of the present disclosure, the protocol determination controller includes a micro-processing unit and a power transmission micro-processing unit. The step of obtaining the determination information of the host by the protocol determination controller includes: the power transmission micro-processing unit requests the determination information from the host, wherein the determination information is the product identification data and supplier identification data of the host, and the host The product identification data and supplier identification data of includes product data or operating system data.

In the read-write method of the data read-write system in one of the embodiments of the present disclosure, before obtaining the determination information of the host, it further includes: the protocol determination controller determines whether the data read-write system has a power transmission module.

In the reading and writing method of a data reading and writing system in one of the embodiments of the present disclosure, if it is determined that the data reading and writing system has the power transmission module, the protocol judgment controller obtains the data from the host through the power transmission module Judgment information, and the judgment information is the product identification data and supplier identification data of the host. If it is determined that the data reading and writing system does not have the power transmission module, the protocol determination controller directly obtains the determination information of the host to determine whether the host uses the first communication protocol or the second communication protocol.

In one of the embodiments of the present disclosure, if it is determined that the data reading and writing system does not have the power transmission module, the protocol determination controller executes multiple steps. The steps include: determining whether the determination information is the first acquisition instruction; if the determination information is a first acquisition instruction instruction, determining that the host uses the first communication protocol, and the micro-processing unit lists the first acquisition instruction A communication protocol communicates with the host; and if the determination information is not the first acquisition instruction command, it is determined that the host uses the second communication protocol, and the micro-processing unit lists the second communication protocol to communicate with the host.

In the method for reading and writing a data reading and writing system in one of the embodiments of the present disclosure, if the data reading and writing system sequentially receives the first obtaining description command, a setting address command and a second obtaining description command from the host . Then the protocol judgment controller judges that the host uses the first communication protocol according to the received first acquisition instruction command, and the host uses the first communication protocol to read and write and is electrically connected to the external memory of the data reading and writing system card. If the data read-write system sequentially receives a set address command and the second get description command from the host. Then the protocol judgment controller presets the host to use the second communication protocol according to the received address setting instruction.

In the reading and writing method of the data reading and writing system in one of the embodiments of the present disclosure, if the protocol determining controller receives the protocol sent by the host within a predetermined time after determining that the host uses the second communication protocol When the authentication command is executed, the host uses the second communication protocol to read and write to the external memory card. If the protocol judging controller does not receive the protocol execution authentication command sent by the host within the preset time after judging that the host uses the second communication protocol, the data reading and writing system changes to list the first communication Protocol to communicate with the host.

In the reading and writing method of the data reading and writing system in one of the embodiments of the present disclosure, the data reading and writing system further includes a USB communication interface. The data read-write system and the host are electrically connected through the communication interface.

Compared with the prior art, the card reader, data reading and writing system and the reading and writing method of the present disclosure obtain a determination information of the host through the protocol determination controller to determine whether the host uses the first communication protocol or the The second communication protocol, and enumerate the first communication protocol or the second communication protocol to communicate with the host. In this way, the communication protocol can be automatically determined and the communication can be carried out, without the user having to select the communication protocol, and the user is also prevented from selecting the wrong communication protocol.

In order to make the above and other objectives, features, and advantages of the present disclosure more obvious and understandable, the following will specifically illustrate the preferred embodiments of the present disclosure, in conjunction with the accompanying drawings, and describe in detail as follows. Furthermore, the directional terms mentioned in this disclosure, such as up, down, top, bottom, front, back, left, right, inside, outside, side layer, surrounding, center, horizontal, horizontal, vertical, vertical, axial , Radial, uppermost or lowermost layers, etc., are only the direction of reference to the attached drawings. Therefore, the directional terms used are used to illustrate and understand the present disclosure, rather than to limit the present disclosure.

In the figure, units with similar structures are indicated by the same reference numerals.

FIG. 1 shows a schematic diagram of the structure of a data reading and writing system and a card reader according to an embodiment of the present disclosure. 1, the present disclosure provides a card reader (Card Reader, CR) 1000, which is suitable for connecting with a host 400, so that the host 400 can read and write data to an external memory card 300 through the card reader 1000 . In this embodiment, the card reader 1000 includes a data reading and writing system 100 and a USB communication interface 200. The data reading and writing system 100 includes a protocol judgment controller 120, a communication interface controller 110, and a memory card controller 130, and the USB communication interface 200 is electrically connected to the communication interface controller 110. In addition, the communication interface controller 110 is electrically connected to the protocol judgment controller 120, and is suitable for communicating with the host 400 through the USB communication interface 200. The memory card controller 130 is electrically connected to the protocol judgment controller 120 and the communication interface controller 110. In this way, the host 400 can read and write data to the external memory card 300 through the memory card controller 130. It is worth mentioning that, in this embodiment, the host 400 uses one of a first communication protocol or a second communication protocol, and the protocol determination controller 120 can be used to obtain a determination of the host 400 Information to determine whether the host 400 uses the first communication protocol or the second communication protocol.

Please continue to refer to FIG. 1. In a preferred embodiment, the data reading and writing system 100 can also be directly connected to the host 400 or in other suitable ways, so that the host 400 can access external memory through the data reading and writing system 100. The card 300 performs data reading and writing. For example, the data reading and writing system 100 can be directly embedded in the host and directly electrically connected to the internal components of the host, without additional connection to the host from the outside of the host through a structure such as the USB communication interface 200. Of course, in other preferred embodiments, the data reading and writing system 100 can also use other communication interfaces other than the USB communication interface 200 to connect to the host 400 from outside the host. That is, the present disclosure does not impose any restrictions on the connection method between the data reading and writing system 100 and the host 400.

In an implementation architecture in which the data reading and writing system 100 is directly connected to the host 400 or in other appropriate ways, the host 400 also uses one of a first communication protocol or a second communication protocol. Similarly, the data reading and writing system 100 of this embodiment includes a protocol judgment controller 120, a communication interface controller 110, and a memory card controller 130. The communication interface controller 110 is electrically connected to the protocol judgment controller 120 and is suitable for communicating with the host 400. The memory card controller 130 is electrically connected to the protocol judgment controller 120 and the communication interface controller 110. In this way, the host 400 can read and write data to the external memory card 300 through the memory card controller 130. It is worth mentioning that in this embodiment, the protocol determination controller 120 is also used to obtain determination information of the host 400 to determine whether the host 400 uses the first communication protocol or the second communication protocol.

FIG. 2 shows a schematic flowchart of a reading and writing method of the data reading and writing system according to an embodiment of the present disclosure. Please refer to FIG. 1 and FIG. 2, the present disclosure also provides a reading and writing method of the data reading and writing system 100 for reading and writing data on an external memory card 300. The method includes step S100 to step S500. First, as shown in step S100: a data reading and writing system 100 is provided. In this embodiment, the data reading and writing system 100 includes a protocol judgment controller 120, a communication interface controller 110, and a memory card controller 130. The communication interface controller 110 is electrically connected to the protocol determination controller 120, and the memory card controller 130 is electrically connected to the protocol determination controller 120 and the communication interface controller 110. Then, as shown in step S200: the data reading and writing system 100 is electrically connected to a host 400, and the communication interface controller 110 is allowed to communicate with the host 400. In this embodiment, the host 400 uses one of the first communication protocol or the second communication protocol. Then, as shown in step S300: the protocol determination controller 120 obtains a determination information of the host 400. Then, as shown in step S400: the protocol determination controller 120 determines that the host 400 uses the first communication protocol or the second communication protocol according to the determination information. Finally, as shown in step S500: the protocol determination controller 120 enumerates (emulates) the first communication protocol or the second communication protocol used by the host 400, so that the host 400 performs data on the external memory card 300 Read and write.

FIG. 3 shows a schematic diagram of the structure of the data reading and writing system and the card reader according to an embodiment of the present disclosure. 3, in the card reader 1000 or the data reading and writing system 100 of one embodiment of the present disclosure, the protocol judgment controller 120 includes a microprocessor control unit (MCU) 121 and a power transmission ( Power Delivery, PD) micro-processing unit 122a. The "include" mentioned in the specification can be a higher-level component classification, and does not mean that the included components must have physical limitations, such as being located in a physical frame or housing, or on the same chip, unless specifically mentioned, The present invention does not impose restrictions on this. That is, in this embodiment, the micro-processing unit 121 and the power transmission micro-processing unit 122a are collectively referred to as the agreement judgment controller 120. When the data reading and writing system 100 is connected to the host 400, the power transmission micro-processing unit 122a requests the host 400 to provide the determination information. The determination information is the product identification data (PID) and vendor identification data (Vendor Identification, VID) of the host 400. The micro-processing unit 121 determines whether the host 400 uses the first communication protocol or the second communication protocol.

In one of the embodiments of the present disclosure, in terms of physical structure, the card reader 1000 includes a power transmission module 122, and the power transmission module 122 includes the power transmission micro-processing unit 122a, a C-type and two-way marking code ( type-C and Bi-phase Mark Coding Physics, type-C & BMC PHY) physical layer 122b and a second flash memory unit (Flash Memory) 152. That is, in terms of physical structure, the power transmission micro-processing unit 122 a is located in the power transmission module 122. In addition, the second flash storage unit 152 is used to store a computer program, and the computer program is used to request the host 400 to provide the determination information to determine the power supply voltage. The power transmission micro-processing unit 122a is used to control the C-type and bidirectional marking code physical layer 122b to communicate with the host 400. In some embodiments, the card reader 1000 further includes a USB transceiver unit interface (Universal Serial Bus 2.0 Transceiver Macrocell Interface, UTMI) 211, a high speed/full speed physical layer (High Speed/Full Speed Physical layer, HS/ FS PHY) 212, a buffer unit 140, a Super Speed Physical layer (Super Speed Physical layer) 222, a Super Speed Device (SSDEV) 221, and a first flash storage unit 151.

The USB transceiver unit interface 211 is electrically connected to the communication interface controller 110. The high-speed/full-speed transmission physical layer 212 is electrically connected to the USB transceiver unit interface 211. The buffer unit 140 is electrically connected to the memory card controller 130 and the communication interface controller 110. The ultra-high-speed device 221 is electrically connected to the ultra-high-speed transmission physical layer 222 and the buffer unit 140. The first flash storage unit 151 is electrically connected to the micro-processing unit 121 and stores a computer program. The computer program is used to determine the communication protocol of the host 400. Wherein, the micro-processing unit 121 communicates with the host 400 through the communication interface controller 110 and the USB communication interface 200. Further, the communication interface controller 110 communicates with the host 400 through the USB transceiver unit interface 211, the high-speed/full-speed transmission physical layer 212, the super-high-speed device 221, and the super-high-speed transmission physical layer 222. The host 400 reads and writes to the external memory card 300 through the ultra-high-speed device 221 and the ultra-high-speed transmission physical layer 222, or the USB transceiver unit interface 211 and the high-speed/full-speed transmission physical layer 212. That is, the host 400 reads and writes the external memory card 300 through the control of the micro-processing unit 121.

Specifically, the power transmission micro-processing unit 122a accesses the second flash storage unit 152 through a Serial Peripheral Interface (SPI) controller 122c.

FIG. 4 shows a schematic flowchart of a reading and writing method of the data reading and writing system according to an embodiment of the present disclosure. Please refer to FIG. 4, under the implementation architecture in which the protocol determination controller 120 includes the micro-processing unit 121 and the power transmission micro-processing unit 122a, in the reading and writing method of the data reading and writing system according to one of the embodiments of the present disclosure, Before the protocol determination controller 120 obtains the determination information of the host 400, it further includes as shown in step S210: the power transmission micro-processing unit 122a requests the host 400 for the determination information. The determination information is the product identification data and supplier identification data of the host 400, and the product identification data and supplier identification data of the host 400 include product data or operating system data. In this embodiment, the data reading and writing system 100 is electrically connected to the host 400, and after communicating with the host 400, the power transmission micro-processing unit 122a requests the host 400 for determination information, and then the power transmission microcomputer in the judgment controller 120 is negotiated. The processing unit 122a obtains the determination information of the host 400 and transmits it to the micro-processing unit 121, and the micro-processing unit 121 determines whether the host 400 uses the first communication protocol or the second communication protocol.

Specifically, please refer to FIG. 3 again. The second flash storage unit 152 can store a preset lookup table for comparing the product identification data of the host 400 with the supplier identification data for the type of the host 400. The first flash storage unit 152 The flash storage unit 151 can store a look-up table for comparing the type of the host 400 with the type of the used transmission protocol, so that the micro-processing unit 121 in the protocol determination controller 120 can determine the type of communication protocol used by the host 400.

Specifically, referring to FIGS. 2 and 4 again, the protocol judgment controller 120 lists the first communication protocol or the second communication protocol used by the host 400 so that the host 400 can read and write data to the external memory card 300 ( The method of step S500) includes: when the micro-processing unit 121 of the protocol determination controller 120 determines that the host 400 uses the first communication protocol, the micro-processing unit 121 controls the interface control unit 110 to list the first communication protocol to the host 400 A communication protocol to communicate with the host 400. When the micro-processing unit 121 determines that the host 400 uses the second communication protocol, the micro-processing unit 121 controls the interface control unit 110 to list the second communication protocol to the host 400 to communicate with the host 400.

Specifically, the first communication protocol is, for example, the Mass Storage Class (MSC) protocol. The host 400 using the first communication protocol is, for example, a computer running Windows 7 (Window 7) operating system, Windows 10 (Window 10) operating system, Macintosh (MacOS) operating system, or running Android (Android) operating system Handheld communication devices, smart phones, etc. Specifically, the second communication protocol is, for example, the External Accessory Native Transport (EAN) protocol. The host 400 using the second communication protocol is, for example, a tablet computer, a handheld communication device, and a smart phone using the iOS operating system. The EAN protocol is an external transmission protocol under the iAP2 communication protocol. The development of the types of communication protocols and the cooperation between electronic devices depend on the development of information technology, and this disclosure does not limit the types of hosts and types of communication protocols.

FIG. 5 shows a timing diagram of a reading and writing method of the data reading and writing system according to an embodiment of the present disclosure. Specifically, please refer to FIG. 5. In one of the examples of the present disclosure, the first communication protocol is for example the MSC protocol, and the second communication protocol is for example the EAN protocol. The host 400 may be a computer running Windows 7 (Window 7) operating system, Windows 10 (Window 10) operating system, or Macintosh (MacOS) operating system, or a handheld communication device running Android (Android) operating system, smart A mobile phone; the host 400 can also be a tablet computer, a handheld communication device, a smart phone, etc. using the iOS operating system. The signal transmission sequence between the host 400, the power transmission module 122, and the micro-processing unit 121 is shown in FIG. 5. After the data reading and writing system 100 is electrically connected to the host 400, the host 400 will supply power to the power transmission module 122. The power transmission module 122 then sends a get manufacturing information command (GetMfgInfo) to the host 400. After receiving the instruction, the host 400 replies with the product identification data PID and the supplier identification data VID. The power transmission module 122 identifies the host 400 based on this data. After that, the power transmission module 122 transmits the host information (HostInfo) to the micro-processing unit 121 actively or upon request. The micro-processing unit 121 selects an appropriate communication protocol according to the host information and enumerates (emulates) the communication protocol.

Please continue to refer to FIG. 5, the above enumerated process is as follows: After the power transmission module 122 transmits the host information (HostInfo) to the micro-processing unit 121, the host 400 sends a cable reset command (USB Bus Reset). If the data reading and writing system 100 supports high speed transmission, it will send back a signal and negotiate a transmission speed with the host 400 (handshake). Then, the host 400 sends a set address command (SET_ADDRESS) to set the relevant address in the card reader 1000. Then, the host 400 sends a get description command (GET_DESCRIPTOR), and the data reading and writing system 100 responds to relevant information according to the command. Finally, the host 400 sends a setting configuration command (SET_CONFIGURATION) to configure the data reading and writing system 100. After the enumeration operation is completed, the host 400 can then read and write to the external memory card 300 through the data reading and writing system 100.

FIG. 6 shows a schematic flowchart of a reading and writing method of the data reading and writing system according to an embodiment of the present disclosure. Specifically, please refer to FIG. 6 together. In one of the embodiments of the present disclosure, an example of the reading and writing method of the card reader is shown in FIG. 6. The reading and writing method of the card reader is described as follows: First, as shown in step A10: the host supplies power to the card reader. Step A10 is to electrically connect the card reader with the host. Therefore, after the card reader is electrically connected to the host, the host will supply power to the card reader. Then, as shown in step A20: the card reader confirms whether the host is connected, and reconfirms if there is no connection. After confirming that the card reader is electrically connected to the host, as shown in step A30: the power transmission module sends a manufacturing information command (GetMfgInfo) to the host. The host will then reply its own manufacturing information according to the manufacturing information command. Next, as shown in step A40: the card reader judges whether the host uses the EAN protocol from the manufacturing information. If the host uses the EAN protocol, the card reader will establish communication with the host using the EAN protocol (as shown in step A51). If the host does not use the EAN protocol, the card reader establishes communication with the host using the MSC protocol (as shown in step A52).

Please continue to refer to FIG. 6, in the present disclosure, as shown in step A40, "whether the host uses the EAN protocol" is used as the judgment condition instead of "whether the host uses the MSC protocol" as the judgment condition. The reason is that: some hosts Although both EAN and MSC protocols are applicable, using the EAN protocol or the MSC protocol will have different results. This type of host is, for example, New iPad pro using the iOS operating system. In detail, after connecting to such a host that simultaneously applies both EAN and MSC protocols, if the protocol determining controller 120 uses the MSC protocol as the determination condition, the protocol determining controller 120 will determine that the host can use the MSC protocol. And make the subsequent card reader complete the enumeration of the MSC agreement. However, because, for example, the host of the New iPad pro only has a read function and no write function when using the MSC protocol, the protocol determination controller 120 uses the iOS operating system after enabling the card reader to complete the enumeration of the MSC protocol. The New iPad pro host cannot write to an external memory card through a card reader. Therefore, in order to allow products such as New iPad pro to perform reading and writing functions through a card reader, in this embodiment, "whether the host uses the EAN protocol" is used as the judgment condition. In this way, when the host applies both the EAN protocol and the MSC protocol, and whether the host uses the EAN protocol as the judgment condition, the protocol judgment controller 120 will determine that the host can use the EAN protocol, and the subsequent card reader will complete the EAN protocol. Enumerate to communicate with the host, and then perform read and write functions. The above two communication protocols are only used as examples, and the present invention is not limited thereto. In other preferred embodiments, if there are multiple communication protocols, appropriate determination steps can also be used, and the present invention does not impose any limitation here.

Please continue to refer to FIG. 6. In the present disclosure, steps A51 and A52 refer to establishing communication with the host. For the method of establishing communication with the host, please refer to FIG. 5 and its description. That is, the micro-processing unit 121 selects an appropriate communication protocol according to the host information and lists the communication protocol. The enumerated details are as explained in the previous paragraph and will not be repeated here. Finally, after step A51, it will be executed as shown in step A61: the host uses the EAN protocol to access the SD memory card (or called Secure Digital Memory Card: Secure Digital Memory Card). Or after step A52, it is executed as shown in step A62: the host accesses the SD memory card using the MSC protocol. The above only cited two communication protocols as examples, and the present disclosure does not limit the number and types of communication protocols. Three or more communication protocols can also be simply and appropriately modified in accordance with the spirit of the present disclosure. In addition, the above reading and writing methods of the card reader can be recorded in the first flash storage unit 151 of the card reader in a computer programming language, etc., so that the micro-processing unit 121 can read the program in the first flash storage unit 151 and execute it. The reading and writing method of the above-mentioned card reader.

FIG. 7 shows a structural diagram of a data reading and writing system and a card reader according to another embodiment of the present disclosure. Please refer to FIG. 7, in the card reader 1000 ′ or the data reading and writing system 100 ′ of the present disclosure, the protocol determination controller 120 includes a micro-processing unit 121. The micro-processing unit 121 receives the determination information through the communication interface controller 110. The main difference from the foregoing embodiment is that the card reader 1000' of this embodiment does not have a power transmission module and its power transmission micro-processing unit. Therefore, in this embodiment, the determination information is not obtained through the power transmission module. Correspondingly, the content of the determination information defined in this embodiment of the present invention is also different from the foregoing embodiment.

FIG. 8 shows a partial flow diagram of a reading and writing method of a data reading and writing system according to another embodiment of the present disclosure. 7 and 8 at the same time, in this embodiment, when the determination information of the host 400 is a first get description command (GET_DESCRIPTOR), the protocol determination controller 120 determines that the host 400 uses the first type Communication protocol. The micro-processing unit 121 lists the first communication protocol to communicate with the host 400. When the determination information of the host 400 is not the first obtaining description command, the protocol determination controller 120 determines that the host 400 uses the second communication protocol. The micro-processing unit 121 lists the second communication protocol to communicate with the host 400. That is, in this embodiment, the protocol determining controller 120 of the card reader 1000' or the data reading and writing system 100' is used to determine whether the controller 120 is used to send a command from the host to the card reader 1000' or the data reading and writing system 100' or The difference of the message determines the communication protocol used by the host.

As shown in FIG. 8, in the reading and writing method of the reading and writing system 100' of this embodiment, multiple steps are further included before obtaining the determination information of the host 400 (step S300). Wherein, step S100 is omitted in FIG. 8 to simplify the drawing, which does not mean that step S100 is not required in this embodiment. In addition, the steps S100, S200, and S300 are the same as the foregoing embodiment, and will not be repeated here. In this embodiment, step S220 is executed after step S200: the protocol judgment controller 120 receives an initialization command from the host 400. Then, as shown in step S230, the protocol determination controller 120 receives a bus reset command (Bus Reset) from the host 400.

It is worth mentioning that, in this embodiment, the protocol determination controller 120 determines that the command from the host 400 received after the cable reset command is the determination information. Therefore, in step S300, the protocol determination controller 120 obtains a determination information of the host 400. That is, in the reading and writing method of the data reading and writing system of this embodiment, after the protocol determining controller 120 receives a bus reset command (Bus Reset) from the host 400 (step S230), if the data is read The writing system 100' sequentially receives the first obtaining description command, a setting address command, and a second obtaining description command from the host 400, and the protocol judgment controller 120 uses the first obtaining description command as the judgment information, Based on this, it is determined that the host 400 uses the first communication protocol. Then, after the data reading and writing system 100' establishes communication with the host 400 using the first communication protocol, the host 400 uses the first communication protocol to read and write to the external memory electrically connected to the data reading and writing system 100' Card 300. On the other hand, if after step S230, the data reading and writing system 100' sequentially receives the setting address command and the second obtaining description command from the host 400, the protocol determines that the controller 120 uses the setting address command As the determination information, the host 400 is preset to use the second communication protocol based on this.

Please refer to FIG. 2 and FIG. 8 at the same time. In FIG. 2, the method of judging that the host 400 uses the first communication protocol or the second communication protocol (step S400) includes multiple steps. These steps are shown in FIG. 8 and include: after step S300, determining whether the determination information is a first obtaining instruction command (step S410). If the determination information is the first acquisition instruction, it is determined that the host 400 uses the first communication protocol and executes step S511, that is, the micro-processing unit 121 lists the first communication protocol to communicate with the host 400. If the determination information is not the first obtaining instruction command, the host 400 is preset to use the second communication protocol, and step S512 is executed, that is, the micro-processing unit 121 lists the second communication protocol to communicate with the host 400.

FIG. 10 shows a timing diagram of the reading and writing method of the data reading and writing system according to an embodiment of the present disclosure. FIG. 11 shows a timing diagram of a reading and writing method of the data reading and writing system according to another embodiment of the present disclosure. FIG. 12 shows a timing diagram of a reading and writing method of the data reading and writing system according to still another embodiment of the present disclosure. Wherein, FIG. 10 is a timing diagram of an example in which the host 400 runs the Window 7 operating system. In this state, the host 400 uses the first communication protocol, namely the MSC protocol. In addition, FIG. 11 is a timing diagram of an example of a tablet computer, a handheld communication device, a smart phone, etc., where the host 400 uses the iOS operating system. In this state, the host 400 uses the second communication protocol, namely the EAN protocol. Furthermore, FIG. 12 is an example of a computer running a Windows 10 (Window 10) operating system or a Macintosh (MacOS) operating system, or a handheld communication device or a smart phone running an Android operating system on the host 400 Schematic diagram of the timing sequence. In this state, the host 400 also uses the first communication protocol, namely the MSC protocol.

From the three different examples shown in Figure 10, Figure 11 and Figure 12, it can be seen that the initial steps after power supply are the same. That is, after the data reading and writing system 100' is connected to the host 400, it sequentially receives the initialization command and the cable reset command sent by the host 400 (steps S100 and S200 in FIG. 2 and steps S220 and S230 in FIG. 8). Returning to FIG. 10, FIG. 11, and FIG. 12, after the first few steps, the host 400 using different operating systems may have different timing steps. Further, comparing Figure 10, Figure 11, Figure 12, it can be seen that the host in Figure 10 executes the power supply, initialization command, cable reset command, and negotiates the transmission speed with the data reading and writing system, and then sends the first acquisition instruction command. . Different from the timing diagram of Figure 10, in the timing diagrams of Figures 11 and 12, the host sends settings after executing power supply, initialization commands, and cable reset commands, and after negotiating transmission speed with the data reading and writing system. Address instructions. Therefore, in order to effectively determine the communication protocol used by the host, this embodiment defines a command sent after the cable reset command as the determination information. In other words, after the host sends the cable reset command, the protocol determination controller 120 of this embodiment recognizes that a command sent by the host 400 after the cable reset command is the determination information.

Please refer to FIGS. 8 and 10 together. In one of the embodiments of the present disclosure, after the host 400 sends the cable reset command, when the data reading and writing system 100' sequentially receives the data from the host 400 When the first obtaining description command, a setting address command, and a second obtaining description command, the protocol judgment controller 120 will use the first obtaining description command after the cable reset command as the judgment information, and then the The protocol determination controller 120 determines that the host 400 uses the first communication protocol according to the determination information (step S410 and step S511 in FIG. 8). It can be seen from the above that the host 400 shown in FIG. 10 uses the first communication protocol, such as the MSC protocol. In other words, the data reading and writing system 100' of this embodiment can recognize that the host 400 of this embodiment is a device running a Window 7 operating system.

In addition, please refer to Figures 8, 11 and 12 again. As can be seen from the above, compared to the timing diagram of Figure 10, in the timing diagrams of Figures 11 and 12, the host performs power supply, initialization commands, and cable reset. After the transmission speed is negotiated with the data read-write system, the address setting instruction and the second acquisition instruction are sent. That is, in the embodiment of FIGS. 11 and 12, after the host 400 sends the cable reset command, the data reading and writing system 100' receives the set address command and the second get description command from the host 400 in sequence . Therefore, the protocol determination controller 120 uses the setting address command after the cable reset command as the determination information, and then the protocol determination controller 120 presets the host 400 to use the second type of communication based on the determination information. Agreement (step S410 and step S512 in FIG. 8). That is, in the judgment process using the setting address command as the judgment information, the device using the iOS operating system, the computer running the Windows 10 (Window 10) operating system, or the Macintosh (MacOS) operating system, or running Android operating system devices will be temporarily recognized as devices using the second communication protocol.

Furthermore, in the case where the address setting command is the determination information, the host 400 may be a tablet computer, a handheld communication device, a smart phone, etc. running the iOS operating system, which is connected to the data reading and writing system. The operation sequence is shown in Fig. 11, and these devices use the second communication protocol. Of course, the host 400 may also be a computer running Windows 10 (Window 10) operating system, or Macintosh (MacOS) operating system, or a handheld communication device or smart phone running Android (Android) operating system, which is compatible with The operation sequence between the data reading and writing systems is shown in FIG. 12, and these devices use the first communication protocol. It is worth mentioning that although the data read-write system uses the setting address command as the determination information to temporarily determine that the host 400 uses the second communication protocol. However, these computers running Windows 10 (Window 10) operating system, or MacOS (MacOS) operating system, or handheld communication devices and smart phones running Android (Android) operating system use this first type of communication. agreement. In other words, the operation sequence shown in FIG. 11 and the operation sequence shown in FIG. 12 belong to different communication protocols. Regarding how to further determine the communication protocol used according to the operation sequence shown in FIG. 11 and the operation sequence shown in FIG. 12, the disclosure will be described in detail below.

Based on the above, in the case where the determination information is the address setting command in the present disclosure, there will be two types of operation timings shown in FIG. 11 and FIG. 12 between the host 400 and the data reading and writing system 100'. One type is, for example, It is the operation sequence between the aforementioned host 400 using the iOS operating system and the data reading and writing system 100' (as shown in Figure 11), and the other is the aforementioned host 400 and data using operating systems such as Window 10 (Window 10) The operation sequence between the reading and writing system 100' (as shown in FIG. 12). Considering that there are two types of operation timings shown in FIGS. 11 and 12 between the host 400 and the data reading and writing system 100', the protocol determination controller 120 of the present invention will first preset the host 400 to use the second type of communication here. Protocols list the second communication protocol to try to communicate with the host (as shown in step S512), and then the type of communication protocol used by the host 400 will be further judged later. Here, it is assumed that the reason why the host 400 uses the second communication protocol (EAN protocol) instead of the first communication protocol (MSC protocol) is similar to the foregoing description, and will not be repeated here.

It can be seen from FIGS. 11 and 12 that when the protocol determines that the controller 120 presets the host 400 to use the second communication protocol to try to communicate, based on the definition of the host 400 shown in FIG. 11 that the iOS operating system is used, and the host 400 is used In this state, the second communication protocol (ie EAN protocol) is used. Therefore, the protocol judgment controller 120 will receive a setting configuration command and a protocol execution authentication after receiving the second obtaining instruction command from the host 400 Command (RequestAuthenticationCertificate). Correspondingly, as shown in FIG. 12, if the host 400 does not actually use the second communication protocol, the host 400 will not send the protocol execution authentication command. Therefore, the present invention uses this difference to distinguish the communication protocol used by the host. The above-mentioned step of identifying the communication protocol used by the host is shown in step S520 in FIG. 8: the micro-processing unit 121 determines whether a protocol execution authentication command sent by the host 400 is received within a preset time.

As shown in FIG. 8, if the protocol execution authentication command sent by the host 400 is received within the preset time, it is confirmed that the host 400 uses the second communication protocol and step S540 is executed, that is, the host 400 uses the first communication protocol. Two communication protocols read and write the external memory card 300. Refer to FIG. 11 for the above details. After receiving the protocol execution authentication command sent by the host 400, the data reading and writing system responds with the authentication serial number. In this way, the second communication protocol, the enumeration step of the EAN protocol, is completed, and the host can start to read and write the memory card under the EAN protocol framework. Similarly, it can be clearly seen in FIG. 8 that if the protocol execution authentication command sent by the host 400 is not received within the preset time, the host 400 does not use the second communication protocol, and executes such as In step S530, the data reading and writing system 100' is changed to list the first communication protocol to communicate with the host 400. That is, when the protocol determination controller 120 waits for the protocol execution authentication command of the host 400 for more than a preset time, such as 300 milliseconds (ms), the micro-processing unit 121 will interrupt the connection with the host 400 and reconnect. Then, the micro-processing unit 121 directly enumerates the first communication protocol to communicate with the host 400. The above-mentioned details can also be known from FIG. 12, which will not be repeated here.

Based on the foregoing, the data reading and writing system 100' is modified to list the first communication protocol to communicate with the host 400, as shown in FIG. 9. In detail, if the protocol execution authentication command sent by the host 400 is not received within the preset time, as shown in step S531: the data reading and writing system 100' interrupts the communication with the host 400. Then, the data reading and writing system 100' re-enumerates the first communication protocol to communicate with the host 400. The data reading and writing system 100' enumerates that the communication between the first communication protocol and the host 400 includes multiple steps. Please also refer to FIG. 12, these steps include as shown in step S532: the protocol determination controller 120 receives the cable reset command from the host 400 again. Then, as shown in step S533: the protocol judgment controller 120 receives the address setting instruction of the host 400 again. At this time, it has been confirmed that the host uses the first communication protocol, that is, the MSC protocol and is a computer running Windows 10 (Window 10) operating system, or Macintosh (MacOS) operating system, or running Android (Android) operating system As shown in step S534, the protocol determination controller 120 receives the second obtaining instruction from the host 400 again. Then, step S535 is subsequently executed: the protocol judgment controller 120 receives the configuration command of the host 400 again; finally, as shown in step S536: the host 400 reads and writes the external memory card 300 using the first communication protocol . It should be noted that FIG. 9 omits the steps before step S520 to simplify the process. For the omitted steps, please refer to FIG. 2 and FIG. 8 and the description thereof, which will not be repeated here. In addition, the operation sequence between the host 400 and the data reading and writing system 100' shown in FIG. 12 illustrates that after waiting for the protocol to execute the authentication command for more than a preset time, the communication is interrupted and changed to enumerate the first communication protocol. Communicate with the host 400. The steps of the data reading and writing system 100' enumerating the first communication protocol to communicate with the host 400 have been described in detail above, and the present invention will not be repeated here.

Please refer to FIG. 13. FIG. 13 shows an example of the flow of the reading and writing method of a card reader in this embodiment. Among them, the first type of communication protocol is, for example, the MSC protocol, and the second type of communication protocol is, for example, the EAN protocol. The host 400 may be a computer running Windows 7 (Window 7) operating system, Windows 10 (Window 10) operating system, or Macintosh (MacOS) operating system; or a handheld communication device running Android (Android) operating system, smart Mobile phones; or tablets, handheld communication devices, smart phones, etc. that use the iOS operating system. The reading and writing method of the card reader in this embodiment is described as follows: First, as shown in step B10: the host supplies power to the card reader. Then, as shown in step B20: the host sends an initialization command to the data reading and writing system. Next, as shown in step B30: the card reader judges whether the host uses the MSC protocol according to the type and order of the received instructions. That is, whether to receive the first get description command after receiving a cable reset command in sequence, if the first get description command is received after receiving a cable reset command in sequence, it can be determined that the host is running Windows 7 (Window 7) The computer system of the operating system and uses the MSC protocol. If the host uses the MSC protocol, proceed as shown in step B42: the card reader establishes communication with the host using the MSC protocol, and then executes as shown in step B62: the host accesses the SD memory card using the MSC protocol. If the host does not use the MSC protocol, proceed to step B41, that is, the card reader establishes communication with the host using the EAN protocol.

Here, the default host uses the EAN protocol, but as described above, since there may still be hosts that use different communication protocols at this step, we will try to establish communication with the EAN protocol first. The card reader then confirms whether the enumeration of the EAN protocol is successful (step B51). If the enumeration is successful, it can be determined that the host is a tablet computer, a handheld communication device, or a smart phone using the iOS operating system, and then perform step B61: the host accesses the SD memory card using the EAN protocol. If the listing fails, it can be determined that the host is a computer running Window 10 operating system or MacOS operating system; or a handheld communication device or smart phone running Android operating system. Then execute step B52: the card reader interrupts the communication and executes the cable reset command, and returns to step B42, that is, the card reader establishes communication with the host through the MSC protocol.

The above only cited two communication protocols as examples, and the present disclosure does not limit the number and types of communication protocols. Three or more communication protocols can also be simply and appropriately modified in accordance with the spirit of the present disclosure.

In another embodiment of the present disclosure, the power transmission module is an optional module. In detail, the protocol judgment controller includes a micro-processing unit for judging whether the data reading and writing system has a power transmission module after the data reading and writing system is connected to the host. When the data read-write system has the power transmission module, please refer to Figures 3 to 6 and the above description. The micro-processing unit requires the power transmission module to provide the obtained product identification data and supplier identification data to determine the The host uses the first communication protocol or the second communication protocol. When the data reading and writing system does not have the power transmission module, please refer to Figure 7 to Figure 13 and the corresponding description. The micro processing unit uses the command type and sequence of the host as the determination information, and the micro processing unit directly receives And determine the determination information of the host.

Please refer to FIG. 14. FIG. 14 shows a partial flow diagram of the reading and writing method of the data reading and writing system according to an embodiment of the present disclosure. It should be noted that FIG. 14 omits the steps before step S200, the steps after step S210, and The steps after step S220 are to simplify the flowchart. For the omitted steps, please refer to FIG. 2, FIG. 4, FIG. 8 and FIG. 9 and description, and will not be repeated here. The reading and writing method of the data reading and writing system of this embodiment is different from the previous embodiment: Compared with the implementation method of FIG. 2, this embodiment electrically connects the data reading and writing system to the host (step S200). It further includes step S201: the protocol judgment controller judges whether the data reading and writing system has a power transmission module. Wherein, if it is determined that the data reading and writing system has the power transmission module, the execution is as shown in step S210: the power transmission micro-processing unit 122a requests the host 400 for the determination information and subsequent steps. If it is determined that the data reading and writing system does not have the power transmission module, the process is performed as shown in step S220: the protocol determination controller 120 receives an initialization command from the host 400 and subsequent steps. Relevant descriptions are as mentioned before, and will not be repeated here.

Specifically, please refer to FIG. 15. FIG. 15 discloses an example of a flow of a method for reading and writing of a card reader in this embodiment. The first communication protocol is, for example, the MSC protocol, and the second communication protocol is, for example, the EAN protocol. The host 400 may be a computer running Windows 7 (Window 7) operating system, Windows 10 (Window 10) operating system, or Macintosh (MacOS) operating system; or a handheld communication device running Android (Android) operating system, smart Mobile phones; or tablets, handheld communication devices, smart phones, etc. that use the iOS operating system. Different from FIG. 6 and FIG. 13, the card reader of this example includes step C30: determining whether the card reader has a power transmission module. The other steps are similar to Fig. 6 or Fig. 13. If there is a power transmission module, perform the steps shown in step C40: the power transmission module sends a command to obtain manufacturing information to the host. For related description, please refer to Fig. 6 and its description. I will not repeat them here. If it does not have a power transmission module, perform steps as shown in step C62: the card reader judges whether the host uses the MSC protocol according to the type and sequence of received commands. For related descriptions, please refer to FIG. 13 and its description, which will not be repeated here.

Compared with the prior art, the card reader, data reading and writing system and the reading and writing method of the present disclosure obtain a determination information of the host through the protocol determination controller to determine whether the host uses the first communication protocol or the The second communication protocol, and enumerate the first communication protocol or the second communication protocol to communicate with the host. In this way, the communication protocol can be automatically determined and the communication can be carried out, without the user having to select the communication protocol, and the user is also prevented from selecting the wrong communication protocol.

Although the present disclosure has been shown and described with respect to one or more implementation manners, those skilled in the art will think of equivalent variations and modifications based on the reading and understanding of the specification and the drawings. The present disclosure includes all such modifications and variations, and is only limited by the scope of the appended invention application patent. Especially with regard to the various functions performed by the above-mentioned elements, the terms used to describe such elements are intended to correspond to any element (unless otherwise indicated) that performs the specified function of the element (for example, it is functionally equivalent), Even if the structure is not equivalent to the disclosed structure that performs the functions in the exemplary implementation of the present specification shown herein. In addition, although a specific feature of this specification has been disclosed with respect to only one of several implementations, this feature can be combined with one or more of other implementations that may be desirable and advantageous for a given or specific application. Other feature combinations. Moreover, as far as the terms "including", "having", "containing" or their variants are used in specific embodiments or claims, such terms are intended to be included in a similar manner to the term "comprising".

The above are only the preferred embodiments of the present disclosure. It should be pointed out that for those of ordinary skill in the art, without departing from the principles of the present disclosure, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the present disclosure. protected range.

100, 100' data reading and writing system 110 communication interface controller 120 Agreement judgment controller 121 Micro-processing unit 130 Memory card controller 140 Buffer unit 151 First flash storage unit 152 Second flash storage unit 122 Power Transmission Module 122a Power Transmission Microprocessing Unit 122b Type C and two-way mark code entity layer 122c serial peripheral interface controller 200 USB communication interface 211 USB transceiver unit interface 212 High-speed/full-speed transmission entity layer 221 Ultra-high-speed devices 222 Ultra-high-speed transmission entity layer 300 external memory cards 400 host 1000, 1000 card reader S100~S540, A10~A62, B10~B62, C10~C82 step block

FIG. 1 shows a schematic diagram of the structure of a data reading and writing system and a card reader according to an embodiment of the present disclosure;

2 shows a schematic flow chart of a reading and writing method of the data reading and writing system according to an embodiment of the present disclosure;

FIG. 3 shows a schematic diagram of the structure of a data reading and writing system and a card reader according to an embodiment of the present disclosure;

4 shows a schematic flow chart of a reading and writing method of a data reading and writing system according to an embodiment of the present disclosure;

FIG. 5 shows a timing diagram of a reading and writing method of the data reading and writing system according to an embodiment of the present disclosure;

FIG. 6 shows a schematic flow chart of a reading and writing method of the data reading and writing system according to an embodiment of the present disclosure;

FIG. 7 shows a schematic diagram of the structure of a data reading and writing system and a card reader according to an embodiment of the present disclosure;

FIG. 8 shows a schematic diagram of a partial flow of a reading and writing method of the data reading and writing system according to an embodiment of the present disclosure;

FIG. 9 shows a schematic diagram of a partial flow of a reading and writing method of a data reading and writing system according to an embodiment of the present disclosure;

FIG. 10 shows a timing diagram of a reading and writing method of the data reading and writing system according to an embodiment of the present disclosure;

FIG. 11 shows a timing diagram of a reading and writing method of a data reading and writing system according to another embodiment of the present disclosure;

FIG. 12 shows a timing diagram of a reading and writing method of a data reading and writing system according to still another embodiment of the present disclosure;

FIG. 13 shows a schematic flow chart of a reading and writing method of a data reading and writing system according to an embodiment of the present disclosure;

FIG. 14 shows a schematic diagram of a partial flow of a reading and writing method of a data reading and writing system in an embodiment of the present disclosure;

FIG. 15 shows a schematic flowchart of a reading and writing method of the data reading and writing system according to an embodiment of the present disclosure.

100: Data reading and writing system

110: Communication interface controller

120: Protocol Judgment Controller

130: memory card controller

300: External memory card

200: USB communication interface

400: host

1000: card reader

Claims (29)

A data reading and writing system suitable for connecting with a host so that the host can read and write data to an external memory card through the data reading and writing system, wherein the host uses a first communication protocol or a second communication protocol One of them, the data reading and writing system includes: A protocol judgment controller; A communication interface controller, electrically connected to the protocol judgment controller, and suitable for communicating with the host; and A memory card controller, electrically connected to the protocol judgment controller and the communication interface controller, and controls the host to read and write data on the external memory card; The protocol determination controller obtains determination information of the host to determine whether the host uses the first communication protocol or the second communication protocol. For example, the data reading and writing system of item 1 of the scope of patent application, wherein the protocol determination controller includes a micro-processing unit, and the micro-processing unit receives the determination information through the communication interface controller. When the determination information of the host is a first Upon obtaining a description command, the protocol judgment controller judges that the host uses the first communication protocol, and the micro-processing unit enumerates the first communication protocol to communicate with the host; when the judgment information of the host is not the first obtained Specify the command, the protocol determination controller determines that the host uses the second communication protocol, and the micro-processing unit enumerates the second communication protocol to communicate with the host. For example, the data reading and writing system of item 2 of the scope of patent application, wherein when the data reading and writing system receives the first obtaining instruction, a setting address instruction, and a second obtaining instruction from the host in sequence, the determination information For the first acquisition instruction, the protocol determination controller determines that the host uses the first communication protocol based on the determination information; when the data reading and writing system sequentially receives the set address instruction and the second acquisition instruction from the host When commanding, the judgment information is the address setting command, and the protocol judgment controller presets the host to use the second communication protocol according to the judgment information. For example, the data reading and writing system of item 3 of the scope of patent application, wherein after the data reading and writing system is connected to the host, it sequentially receives the initialization command and the cable reset command sent by the host, and the agreement determines that the controller recognizes the host A command sent after the cable reset command is the determination information. For example, in the data reading and writing system of item 3 of the scope of patent application, when the protocol determining controller determines that the host uses the second communication protocol for communication, the protocol determining controller defaults to receiving the second communication protocol from the host. After obtaining the description command, it receives a configuration command and a protocol execution authentication command. When the protocol judges that the controller waits for the host's protocol execution authentication command for more than a preset time, the micro-processing unit changes to list the first A communication protocol to communicate with the host. For example, the data reading and writing system of item 3 of the scope of patent application includes: A USB transceiver unit interface is electrically connected to the communication interface controller; A high-speed/full-speed transmission physical layer is electrically connected to the USB transceiver unit interface; A buffer unit electrically connected to the memory card controller and the communication interface controller; An ultra-high-speed transmission physical layer; An ultra-high-speed device electrically connected to the ultra-high-speed transmission physical layer and the buffer unit; and A first flash storage unit, electrically connected to the micro-processing unit, and storing a program for determining the communication protocol of the host, The communication interface controller communicates with the host through the USB transceiver unit interface, the high-speed/full-speed transmission physical layer, the ultra-high-speed device, and the ultra-high-speed transmission physical layer; The host reads and writes the external memory card through the control of the micro-processing unit. For example, the data read-write system of item 1 of the scope of patent application, wherein the agreement judgment controller includes a micro-processing unit and a power transmission micro-processing unit. When the data read-write system is connected to the host, the power transmission micro-processing unit requires The host provides the determination information, which is the product identification data and supplier identification data of the host, and the micro-processing unit determines whether the host uses the first communication protocol or the second communication protocol. For example, the data reading and writing system of item 7 of the scope of patent application, wherein when the micro-processing unit determines that the host uses the first communication protocol, the micro-processing unit controls the interface control unit to list the first communication protocol and the host To communicate; when the micro-processing unit determines that the host uses the second communication protocol, the micro-processing unit controls the interface control unit to list the second communication protocol to communicate with the host, and the product identification data of the host is Supplier identification information includes product information or operating system information. For example, the data reading and writing system of item 7 of the scope of patent application also includes a power transmission module, which includes: The power transmission micro-processing unit; A C-type and two-way marking code physical layer; A second flash storage unit, storing a program for requesting the host to provide the determination information to determine the power supply voltage; The power transmission micro-processing unit is used to control the C-type and two-way marking code physical layer to communicate with the host, and the data reading and writing system further includes: A USB transceiver unit interface is electrically connected to the communication interface controller; A high-speed/full-speed transmission physical layer is electrically connected to the USB transceiver unit interface; A buffer unit electrically connected to the memory card controller and the communication interface controller; An ultra-high-speed transmission physical layer; An ultra-high-speed device electrically connected to the ultra-high-speed transmission physical layer and the buffer unit; and A first flash storage unit is electrically connected to the micro-processing unit, and stores a program for determining the host communication protocol, The communication interface controller communicates with the host through the control of the micro-processing unit; The host reads and writes the external memory card through the ultra-high-speed device and the ultra-high-speed transmission physical layer. For example, the data reading and writing system of item 1 of the scope of patent application, wherein the agreement judgment controller includes a micro-processing unit to judge whether the data reading and writing system has a power transmission module after the data reading and writing system is connected to the host When the data read-write system has the power transmission module, the micro-processing unit requires the power transmission module to provide the obtained product identification data and supplier identification data to determine whether the host uses the first communication protocol or The second communication protocol; when the data reading and writing system does not have the power transmission module, the micro-processing unit directly receives and determines the determination information of the host. For example, the data read-write system of item 10 of the scope of patent application, when the data read-write system does not have the power transmission module, the micro-processing unit directly receives the determination information of the host through the communication interface controller. If the determination information of the host is a first acquisition instruction, the micro-processing unit determines that the host uses the first communication protocol; when the determination information of the host is not the first acquisition instruction, the micro-processing unit determines The host uses the second communication protocol to communicate. For example, the data reading and writing system of the first item of the patent application, in which the communication interface controller communicates with the host through a USB communication interface. A card reader suitable for connecting with a host so that the host can read and write data to an external memory card through the card reader, wherein the host uses a first communication protocol or a second communication protocol. 1. The card reader includes: A protocol judgment controller; A communication interface controller, electrically connected to the protocol judgment controller, and suitable for communicating with the host; A memory card controller, electrically connected to the protocol judgment controller and the communication interface controller, and controls the host to read and write data on the external memory card; and A USB communication interface is electrically connected to the communication interface controller, wherein the protocol determination controller obtains a determination information of the host to determine whether the host uses the first communication protocol or the second communication protocol. For example, the card reader of item 13 of the scope of patent application, wherein the protocol judgment controller includes a micro-processing unit for enumerating the first communication protocol or the second communication protocol to communicate with the host; When the information is a first acquisition instruction, the protocol determination controller determines that the host uses the first communication protocol; when the determination information of the host is not the first acquisition instruction instruction, the protocol determination controller determines the The host uses this second communication protocol. For example, the card reader of item 13 of the scope of patent application, wherein the agreement judgment controller includes a micro processing unit and a power transmission micro processing unit. When the card reader is connected to the host, the power transmission micro processing unit requests the host The determination information is provided to determine the power supply voltage, and the micro-processing unit determines whether the host uses the first communication protocol or the second communication protocol. The determination information is that the product identification data and supplier identification data of the host are at least one of them. A reading and writing method of a data reading and writing system is used for reading and writing data on an external memory card. The method includes: A data reading and writing system is provided. The data reading and writing system includes a protocol judgment controller, a communication interface controller, and a memory card controller. The communication interface controller is electrically connected to the protocol judgment controller, and the memory card controls The device is electrically connected to the protocol judgment controller and the communication interface controller; Electrically connecting the data reading and writing system with a host, and allowing the communication interface controller to communicate with the host, wherein the host uses one of the first communication protocol or the second communication protocol; The protocol judgment controller obtains a judgment information of the host; The protocol determination controller determines that the host uses the first communication protocol or the second communication protocol according to the determination information; and The protocol determining controller enumerates the first communication protocol or the second communication protocol used by the host, so that the host can read and write data on the external memory card. For example, the method for reading and writing a data reading and writing system in the scope of the patent application, wherein the protocol determining controller includes a micro-processing unit, and determining whether the host uses the first type of communication protocol or the second type of communication protocol includes a plurality of Steps, these steps include: Determine whether the determination information is a first obtaining instruction; If the determination information is the first acquisition instruction, it is determined that the host uses the first communication protocol, and the micro-processing unit enumerates the first communication protocol to communicate with the host; and If the determination information is not the first obtaining instruction command, it is determined that the host uses the second communication protocol, and the micro-processing unit lists the second communication protocol to communicate with the host. For example, the reading and writing method of the data reading and writing system of item 17 of the scope of patent application, where if the data reading and writing system receives the first obtaining instruction, a setting address instruction and a second obtaining instruction from the host in sequence , The protocol determining controller determines that the host uses the first communication protocol according to the received first acquisition instruction command, and the host uses the first communication protocol to read and write and is electrically connected to the external of the data reading and writing system Memory card; if the data read-write system receives the set address command and the second get description command from the host in sequence, the protocol determines that the controller presets the host to use the second command based on the received set address command Kind of communication protocol. For example, the method for reading and writing a data reading and writing system in the scope of the patent application, wherein the protocol determination controller further includes a plurality of steps after determining that the host uses the second communication protocol, and these steps include: Determining whether a protocol execution authentication command sent by the host is received within a preset time; If the protocol execution authentication command sent by the host is received within the preset time, it is confirmed that the host uses the second communication protocol, and the host uses the second communication protocol to read and write to the external memory card; and If the protocol execution authentication command sent by the host is not received within the preset time, the data reading and writing system will instead list the first communication protocol to communicate with the host. For example, the method for reading and writing a data reading and writing system of item 19 of the scope of patent application, wherein after the data reading and writing system receives the second obtaining instruction from the host, the protocol judges that the controller receives a configuration command of the host. For example, the reading and writing method of the data reading and writing system of item 19 of the scope of patent application, before obtaining the determination information of the host, it further includes multiple steps, and these steps include: The protocol judgment controller receives an initialization command from the host; and The protocol determination controller receives a cable reset command from the host, and the protocol determination controller recognizes the host's command received after the cable reset command as the determination information. For example, the reading and writing method of the data reading and writing system of item 19 of the scope of patent application, wherein the data reading and writing system is changed to enumerate the steps of communicating with the host by the first communication protocol including: The protocol determines that the controller receives and re-receives the cable reset command from the host; The protocol determines that the controller receives and re-receives the host's setting address command; The protocol judges that the controller receives and re-acquires the instruction to obtain the description of the host; The protocol determines that the controller receives and re-receives the configuration command of the host; and The host uses the first communication protocol (MSC) to read and write to the external memory card. For example, the method for reading and writing a data reading and writing system of the 16th patent application, wherein the protocol determination controller includes a micro-processing unit and a power transmission micro-processing unit, and the protocol determination controller obtains the determination information of the host include: The power transmission micro-processing unit requests the determination information from the host, where the determination information is the product identification data and supplier identification data of the host, and the product identification data and supplier identification data of the host include product data or operating system data. For example, the method for reading and writing a data reading and writing system of the 16th patent application, before obtaining the determination information of the host, further includes: the protocol judgment controller judges whether the data reading and writing system has a power transmission module. For example, the method for reading and writing a data reading and writing system of item 24 of the scope of patent application, wherein if it is judged that the data reading and writing system has the power transmission module, the agreement judgment controller obtains the judgment from the host through the power transmission module Information, and the determination information is the product identification data and supplier identification data of the host; If it is determined that the data reading and writing system does not have the power transmission module, the protocol determination controller directly obtains the determination information of the host to determine whether the host uses the first communication protocol or the second communication protocol. For example, in the method for reading and writing a data reading and writing system of the 25th patent application, if it is judged that the data reading and writing system does not have the power transmission module, the agreement judges that the controller executes multiple steps, and these steps include: Determine whether the determination information is the first obtaining instruction; If the determination information is a first acquisition instruction command, it is determined that the host uses the first communication protocol, and the micro-processing unit lists the first communication protocol to communicate with the host; and If the determination information is not the first obtaining instruction command, it is determined that the host uses the second communication protocol, and the micro-processing unit lists the second communication protocol to communicate with the host. For example, the reading and writing method of the data reading and writing system of item 26 of the scope of patent application, wherein if the data reading and writing system receives the first obtaining description command, a setting address command and a second obtaining description command from the host in sequence, Then the protocol judgment controller judges that the host uses the first communication protocol according to the received command is the first get description command, and the host uses the first communication protocol to read and write and is electrically connected to the data read/write system External memory card; if the data read-write system receives a set address command and the second get description command from the host in sequence, the protocol judges that the controller presets the host to use the host according to the received set address command The second communication protocol. For example, the method for reading and writing the data reading and writing system of item 26 of the scope of patent application, wherein if the protocol determining controller receives the protocol execution sent by the host within a preset time after determining that the host uses the second communication protocol Authentication command, the host uses the second communication protocol to read and write the external memory card; If the protocol judging controller does not receive the protocol execution authentication command sent by the host within the preset time after judging that the host uses the second communication protocol, the data reading and writing system changes to list the first communication Protocol to communicate with the host. For example, the data reading and writing system of the 16th item of the scope of patent application, wherein the data reading and writing system further includes a USB communication interface, and the data reading and writing system and the host are electrically connected through the communication interface.

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