TWI221558B - Master and slave function switching method - Google Patents

Abstract

There is provided a master and slave function switching method, suitable for a portable electronic information apparatus having ports for external connection so that the electronic information apparatus can be externally connected to peripheral devices to execute a data transmission operation. The electronic information apparatus has at least two ports of master/slave specifications for external connection. When the electronic information apparatus performs a data transmission operation with the peripheral device, the software and hardware functional units in the electronic information apparatus configure the electronic information apparatus to act as a master side or a slave side in the data transmission operation based on the specification of the peripheral device, so that the portable electronic information apparatus can be configured as a slave side or as a master side corresponding to the user's requirement, thereby expanding the range in which the electronic information apparatus can be used and increasing the flexibility in use.

Description

1221558 V. Description of the invention (1) [Technical field to which the invention belongs] The present invention relates to a data transmission technology of a portable electronic information device, and more particularly to a data transmission and function expansion operation with an external port and an external peripheral device. method. [Previous technology] Since the beginning of the 1990s, due to the maturity of the application of network technology, the scope of network use has gradually expanded from specific places such as government agencies and company lines to the living areas of families and ordinary individuals. The penetration rate of network use As a result, the use of the Internet has become a common behavior in the daily life of ordinary families and individuals. The reason is that huge amounts of information have also been transmitted to the general individual's life by turning on the Internet, turning on computers. The screen is full of all kinds of messages transmitted through the Internet, so some people call this 90's popularity of the Internet the age of information explosion. In response to this influx of old information and new information, 'people will no longer be passively absorbing information. Just as technology always comes from the meaning of the word humanity, use personal computers to convert this information into useful contributions. The material approach does not meet the needs of mobile users to receive information anytime, anywhere, which has led people to actively explore a function that is equivalent to the function of a personal computer and can support data management and reception functions anytime, anywhere. The concept of portable electronic information equipment proposed by Apple Computer President John Sculley believes that the information that humans need to receive is more and more. The invention of portable electronic information equipment can help modern people deal with huge amounts of money. Life, it also has an electronic manual (organizer) to use as a personal information management (Personal Information

16983. ptd page 6 1221558 V. Description of the invention (2)

Management; PI Μ) use 'like personal time ... ^ book, address book, computer and other functions are included 5 5 management of records, the maturity of product memorandum, and the introduction of new product functions, with the surrounding network-type electronics Information equipment, as well as personal data communications, and portable devices that have been introduced since then have been carried around with this portable electronic information device. Many users use their data transmission functions to receive official work from all sides at any time, and, Quickly and conveniently absorb new knowledge, and then grasp the information of the eight parties, so as not to be overwhelmed by this trend of influx of knowledge, the pulsations and trends of most i-portable electronic information devices are attached — buttons are available Some information can be entered by the user: a small keyboard or a function with a sensitive panel for the user to use. ^ ^ ^ For sub-information devices, portable electronic information devices can use voice recognition = turn-in, and some methods can be used. For mobile users, portable power provides voice input that is more convenient than laptop computers, and Bei Xun 5 also provides financial management and daily life. Information: No Qi == 易 、 子; ί:; Computer, #Data: Two-way transfer wheel. And the new portable electric full;;! It can also be connected to mobile phones to collect data on the Internet, and can receive and transmit: the electronic system of the global system (Global P0siti0n System; GPS) = As can be seen from the above, the additional functions of portable electronic information equipment have also been expanded as technology advances. And the changes in user needs have increased dramatically. The product limit 2 limits the applicable scope of the portable electronic information equipment itself, except for factors such as the amount of storage capacity it can provide. J ^ Xl yy ^ ° " You can also provide almost the same functional items as notebook computers 16983. ptd —----- Page 7 I22l558 Five inventions (3) Ma District 'but this is not the case , Most of the users still choose to use a notebook computer as a portable data processing tool without considering the above factors, and only use portable electronic information equipment to receive information and use it as an electronic notepad, etc. For simple work, the reason lies in the universal serial bus (U niversa 1 Seria 1 B us; hereinafter referred to as USB) of portable electronic equipment. The port is either a slave type or USB. The OTG specification type (UniVersal serial Bus On The Go, which is an additional specification for USB 2.0 can also be said to be the OTG specification), so that portable electronic information equipment can only be controlled by main model equipment (such as personal computers), Or it can only control a few designated devices. It can not provide. For example, a notebook computer can completely command and drive all peripheral devices as the host computer. For example, it can drive a printer to print data and a disc burner to perform burn data. If the user is using a f-type electronic information device as a daily data processing tool, the possible tasks include: printing the data received by the portable electronic information device and burning the data. Record as a disc file format, listen to downloaded MP3 music, set the screen in the digital camera as the desktop background: and scan the required data or pictures and store them as general data processors, but the above-general data The processing work cannot be completed by the portable electronic alum equipment, because the portable electronic information equipment needs to be connected with the brain first, and the desired processing Place the data when it is transmitted to the inside of the personal computer. After the personal computer confirms the position of the supported peripheral equipment and drives it, the data processing can be completed. If the portable electronic information device wants to connect the peripheral equipment for data processing operations , If the computer host equipment cooperates with it at the scene, the operation will not be carried out smoothly.

16983. ptd Page 8 1221558 V. Description of the invention (4) A lot of time will be wasted in the process of the compatible computer host, and each time data processing is performed, it must be done through the computer host, as generally known Portable electronic information devices only use one USB port. When performing data processing operations, the device's USB port is connected to the hub first, and then connected to the peripheral device through the hub for data transmission. In progress, the bandwidth used by the electronic device port is shared with external peripheral devices, thus reducing the data transmission speed and extending the operating time. The above-mentioned various situations are quite inconvenient and lack space for the operation of the electronic information equipment. The flexibility in terms of time and time limits the work items that the portable electronic information device can perform, so that it cannot provide users with additional functions. [Summary of the Invention] In view of the disadvantages of the foregoing prior art, the main purpose of the present invention is to provide a method for changing the function of the master and slave terminals, which can be applied to any portable electronic information device with 3 external ports. In order to make the portable electronic device 1% compatible with different operating needs, it can set its relationship with the external peripheral equipment 1 host and slave. It is opposite; another object of the present invention is to provide a function of a master and a slave, which can be applied to a portable electronic information device, and the portable information device is provided with at least one USB Port. When performing data transmission operations, each of its connected peripheral devices uses independent bandwidth for input and output. As described in the prior art, two external peripheral devices need to share the same width, so < improve data The transfer speed further reduces the time required for data transfer operations.

16983.ptd

1221558 V. Description of the invention (5) According to the above purpose, the present invention provides a method for changing the function of the master and slave terminals, which can be applied to a portable electronic information device with a set of external ports for The portable electronic information device provides a peripheral device connected to the external port (master device or slave device) to change the master and slave relationship between the portable electronic information device and the external peripheral device. The method is Including: (1) Define the two ports set by the portable electronic information device as both the master and the slave; (2) Order the central processing unit of the portable electronic information device internally Detect the two ports set by this portable electronic information device to determine whether any external peripheral device is inserted into either or both of the external ports; (3) A primary test of the right central processing unit found any external connection An external device is inserted into the port, and the central processing unit makes the type of the external peripheral device inserted into the console pair to which the external port belongs as the main control device (Höst "

Device; such as: personal computer, notebook computer, etc.) or slave device jf lave Device; such as printer, scanner, etc.) to determine, to set the portable electronic information device itself and peripheral devices to be carried out this time ^ Master-slave relationship in the process of data transmission; (4) If it is determined that the specifications of this external peripheral device are the master device, set the status of the portable electronic secondary device as the master device, and immediately order The slave belongs to the second port, and the console determines the type of the peripheral device. If the specifications of an external peripheral device are slave devices, the master console of the external port to which the slave device is connected determines the peripheral device. After the type of the peripheral device has been determined by the control panel to which the port belongs, the conclusion I of the peripheral device will be judged, and it will be returned to the central processing order S, so that the peripheral device

16983. ptd Page 10 1221558 V. Description of the invention (6) The type is reported to the central processing unit by signal transmission. The function conversion method of the master terminal and the slave terminal of the present invention can be applied to a portable electronic information device, and the portable electronic information device has at least one set of specifications set as the connection between the master terminal and the slave terminal. Port module, when the portable electronic information device is performing data transmission, the software and hardware units inside the portable electronic information device need to be detected by the console on the external port to determine the The specifications of the peripheral devices connected to the portable electronic information equipment are master or slave devices, and then the role of the portable electronic device in data transmission is set as master or slave, so it can cooperate at any time. The user needs to flexibly adjust the master-slave relationship between the portable electronic information device and external peripheral devices, so as to improve the portable electronic information device only as a slave terminal for passively receiving instructions in each data transmission operation. The disadvantage of lack of flexibility in use is to expand the work items and scope of use that the electronic device can perform, and increase the convenience of users to carry around. [Embodiment] In the following embodiments, the method for transforming the functions of the master and the slaves of the present invention is applied to a personal digital assistant (Perso na 1 Digita 1 Assistant; PDA) to expand the personal digital assistant The work items that can be carried out can expand the application range of personal digital assistants and increase the flexibility in use. However, it must first be noted here that the method for transforming the functions of the master and slaves of the present invention is not limited to being applied to personal digital assistants. In a broad sense, the present invention can be applied to any external port. To expand the use of portable electronic information equipment for

16983.ptd Page 11 1221558 V. Description of the invention (7) Function and scope of Shi Yuejia y portable electronic information equipment. The personal diagram is a block diagram of the hardware architecture, which shows the connection between the modules to which the present invention is applied, such as circle: dry =: ;;: Cheng *, master / slave port mode for each function: 2 miss Two: = Bit: Li 1 is powered by USB «, Qian Qian, and 2. Central processing is early 3. Internal points are other points, personal digital assistant 1 also includes it) ii :: Group, but only shown here The parts related to the present invention, such as the remote central processing unit 3, the internal memory module 4, the external memory: ΐ ;: Λ memory module 6 and the user interface module 7, and their functions and functions are further detailed. Description. tThe following will not use the master and slave function conversion method of the present invention as a host and simultaneously drive and operate at the same time. Therefore, it is necessary to set the group specification settings on the USB master / slave port module 2 It is set as the first and second USB ports 2A and 2B that can be used by the master and slaves. When the first USB port 2A and the second USB port 2B provided by the personal digital assistant 1 are connected to the surroundings, respectively When device a and its peripherals are not equipped with B, the first USB port 2A and the second USB port 2B respectively belong to the master \ slave console (not shown), and will automatically connect the connected peripherals A and peripherals. Device b's specifications (that is, peripheral device A or peripheral device B is determined as the master or slave device) for detection, and the detection result is provided to the central processing unit 3 provided by the personal digital assistant 1, so that the central The processing unit 3 can provide the digital assistant 1 with respect to the peripheral device A and the peripheral device.

16983.ptd Page 12 1221558 V. Description of the invention (8) Set the master and slave relationship between device B. If the two USB port modules each belong to the master \ slave console, determine the first USB The specifications of peripheral device A connected to port 2A are master devices (such as personal computers, laptops, etc.). The specifications of peripheral device b connected to second USB port 2 B are slave devices (such as ... Digital cameras, printers, compact disc drives, and compact disc recorders (Compact Disc-Recorable; CD-R, etc.). The meaning of this situation is expressed in this data processing operation for each peripheral device. The master control right is obtained by the peripheral device A connected to the personal digital assistant 1. (It should be noted here. 疋 · A second USB port 2 B can also be connected to a peripheral δ and backup B with a master control δ and backup '' In order to make the peripheral device a be used as a slave device), the position of the personal digital assistant 1 also needs to be converted to the slave end, and in the data processing operation, the peripheral device A used as the host can be connected via the first USB Port 2A enters data into the personal digital assistant During the process, and processed by the central processing unit 3, the data is stored in one of three types of storage modules: internal memory module 4, external memory module 5, and register module 6. According to the user's needs, work instructions are given ^ through the personal digital assistant 丨 the second usb port set up is dedicated to the surroundings and equipped with B 'to drive the peripheral equipment bi 隹 and sit 丨 W, JiaM, respectively, respectively The master \ slave console of the master / slave judges the peripheral device A and peripheral device B's designation, which is the filial piety process in this data processing. They are all slave devices. This means that the master is the master. Its department; has the right to control the operation of the location where the assistant 1 is located, where the assistant 2 has two or two people, and / or the peripheral equipment level. The peripheral equipment is set to direct and control the peripheral equipment A and: = Assistant 1 is able to host the game. Serve equipment A and peripheral equipment to issue their instructions

1221558 V. Description of the invention (9) (If the peripheral device A and peripheral device B are allowed to print data, read data from the disc and burn data, etc.), at this time, the user can set it up with the personal digital assistant 1. The user interface module 7 inputs the desired work items to the central processing unit 3 provided inside the personal digital assistant 1 for processing. The central processing unit 3 will set the internal work of the personal digital assistant 1 according to the work items input by the user. In the mode, find the process that matches the steps required for the execution of the work item. If the work item selected by the user is data search and read, the central processing unit 3 will first determine that the data to be obtained is currently located in the internal memory module. 4. Storage modules such as external memory module 5, register module 6, or one of peripheral device A and peripheral device B. The central processing unit 3 provides the user interface module 7 and its location according to the location of the data. The software and hardware support tasks required by the enclosed driver to read the data. If the user wants to print the data, the central processing unit 3 also Confirm that the location of the data is located in the storage module such as internal memory module 4, external memory module 5, register module 6, or one of peripheral device A and peripheral device B. Confirm the data storage After the location, the central processing unit 3 will use the driver attached to the user interface module 7 to send a command to the peripheral device A (at this time, the peripheral device A is a slave device printer) to perform a print job to detect Whether the printer is connected with the personal digital assistant 1 and can support the personal digital assistant 1 to perform the data printing job. If it is, then execute the printing job. If not, cancel the instruction to execute the printing job. The second figure is A software architecture block diagram showing the application of the software conversion method of the master and slave functions of the present invention to the personal digital assistant 1.

16983.ptd page 14 1221558

V. Description of the invention (ίο) Weaving structure, # 图 不 ： this-software organization structure includes a user interface driver 10, coffin system 11, general device file configuration table 12, CD driver 13, ISO9 6 6 0 (International Standards Organization's standard specifications for optical discs to make disc data available in various operating systems) File architecture 14. USB mass storage specification architecture (USB Mass Str.

Class) 15, the first USB port master \ slave console i6, cd and USB building configuration table 1 7, printer driver 1 8, printer specification architecture 19, and second USB connection Port master / slave console 20 and some of the hardware required for the above software architecture to operate, such as internal memory module 4, external memory module 5, peripheral device A and peripheral device B, which are included in the above The memory module is standard equipment known to personal digital assistant 1. The types of equipment included in peripheral device 2 A and peripheral device 2 B are also known, and the above hardware does not belong to what is shown in Figure 2. The scope of the software architecture, so the use and structure of these memory modules and devices will not be described in further detail below. The user interface driver 10 in the personal digital assistant 1 drives the software and hardware cooperation actions related to the execution of the work instructions according to the work instructions that the user rotates. If the user wants to read the file data, the user interface driver 1 0 Upon receiving this work instruction, the file system 11 is then driven to search for the location of the file data. If the file data is located in one of the internal memory module 5 or the external memory module 6, the user interface driver 10 You need to use the file configuration table 1 2 of the general device to obtain the memory address block where the file data is stored, so that the file data can be taken out for users to read. If the file data is stored in peripheral device A and peripheral devices In B, the user interface driver

! 6983.ptd

1221558 V. Description of the invention (11) Formula 1 0 If you want to take the Tan Xingzi to make the 17 media 俨 俨 二 二 second shake, you need to use the CD and USB slot to configure the audio material address, and follow the two Case has = data content, if the file data is stored 2 items, take the case of the poor program 13 to drive the disc Ting Ting, you also need to show through the disc drive) according to IS09 6 6 0 file Xing Mou 椹 h ττοη 先 item disc player (Unillustrated, 隹, 隹 + π human structure 14 and USB mass storage specification 15 # Zong Xi is not allowed, only in the optical disc burner or read-only =, the principle 1 is compatible and can be read smoothly, use , ☆ surface driver / 1Q, the output data file fetching instructions are transmitted through the transmission field of the optical disc driver 13, is0 ^ project structure 14 or CD and USB file configuration table 17, storage specification 16 is assembled and The first USB connection, the main control terminal 2 through: system 016 driver directs peripheral equipment A to enter the file data into personal 1 digital assistant 1 for users to read 'in addition' if the user wants to use a printer (not shown) ) When printing personal digital assistant 1 to store data, use program 10 to send a print job instruction to the printer driver 丨 8 to print After receiving the print job instruction, the printer driver 18 detects the printing of the peripheral device B according to the operating standard of the first-class architecture 19 of the computer and through the second USB port master \ slave console 2 0 Whether the machine can be driven to support data printing. If the user interface driver 丨 〇 receives the information returned from the second USB connection 皋 master \ slave console 20, the user interface driver 1 will be driven immediately. The printer performs the data printing work. Figure 3 is a first-class granular image, which shows the personal digital assistant 1 to which the present invention is applied, and the attached first USB port 2A and second USB port 2

16983.ptd Page 16 1221558 V. Description of the invention (12) When the peripheral is not ready, the procedure for determining the master and slave attribute specifications of peripheral devices connected to the two USB ports is because the first USB port 2A and the second The specifications of the USB connection bee 2B exist at both the master and the slave side, so the two us! Connections and the console to which it belongs can be flexibly changed according to the specifications of the external peripheral device (master β or slave device). The position of personal digital assistant 1 in data processing has been private, so in the following implementation procedure, only the first USB connection 璋 2 A is a private sequence to determine the master and slave attribute specifications of the external peripheral device (S2-1 ~ S4) will be described in detail, and the determination procedure (S3-1 ~ S4) of the second USB port 2B is the same as the determination procedure of the first USB port 2A ', so it is not described here. In step S1, the central processing unit 3 set up inside the personal digital assistant 1 sends a command signal to the console to which the first USB port 2A belongs, so that the console to which the USB port belongs is connected to the first USB. Detect the connection between port 2A and peripheral devices to determine whether peripheral devices are involved in the u SB port, and then proceed to step 2. In step S2, after receiving the command signal issued by the central processing unit 3, the console of the first US B port 2 A belongs to the control terminal \ slave console 16 of the first USB port 2A. Whether Becha connection 璋 is installed in the peripheral equipment, if yes, then proceed to step S2-1, if not, return to step S1. 'In step S 2-1, the master control unit to which the first u SB port 2 A belongs \ slave console 1 6 is the master device of the peripheral device A that is connected to the first USB port 2A. Or the slave device to make a judgment. If the peripheral device A belongs to the slave device, go directly to step S2-2. If it is the master device, then

! 221558 V. Description of the invention (13) Go to step S2-3. In step S 2-2, the host console to which the 'first USB port 2 A belongs' determines whether the type of the peripheral device A is a digital camera, a printer, a compact disc drive, a compact disc burner, etc., and then And it progresses to step S4. In step S2-3, 'the USB master console in the slave console of the first USB port 2A belongs to the USB console of the slave console to determine whether the peripheral device is a personal computer, a notebook computer, etc. Then, the process proceeds to step S4. In step S4 ', the master terminal \ slave terminal console 16 to which the first USB port 2A belongs determines the type of the peripheral equipment of the master terminal, and returns the result of the type discrimination to the central processing unit 3. Figure 4 is used to further explain the master and slave attribute specification identification procedures for external peripheral devices described in Figure 3, as shown in the figure, when the personal digital assistant 1 is inside.卩 The set USB master / slave port module 2 contains the first USB port 2 A and the second USB port 2 B. The specifications of the connected peripheral devices a and peripheral device B are as follows: In the case of a slave device, it means that the role of the personal digital assistant 1 in this data processing operation is the master. In this case, the personal digital assistant 1 is used as a host, which controls the peripheral device A. And peripheral device B's rights; the personal digital assistant 1 uses the user interface module 7 to drive the function modules within the user to execute the work instructions entered by the user (such as step 100), and the user interface module 7 pairs The type of work the user wants to perform in turn is to determine the data search, print or burn the disc (such as step 1 10). If the work item is data search, first, the user interface driver 10 is through central processing Unit 3 searches for the location where the data is stored (such as step 120). The data may be stored internally

Page 18 16983.ptd 1221558 V. Description of the invention (14) Memory module 4, external memory module 5, register module 6, and peripheral device A or peripheral device B, such as data stored in internal memory In the module 4, the central processing unit 3 can directly obtain data from the internal memory module 4 (such as step 1 2 1). If the data is stored in the external memory module 5, the user interface module 7 at this time The central processing unit 3 will send a detection signal to determine the position of the external memory module 5 (such as step 1 2 2). Once the location of the external memory module 5 is determined, the central processing unit 3 will immediately start from the external Request data from the memory module 5 (such as step 1 2 3), but if the position of the external memory module 5 is not found, the central processing unit 3 returns a signal to notify the USB master port module 2 attached The console does not find the memory location (that is, enter node 1). When the data is stored in peripheral device A or peripheral device B, the user interface module 7 also sends a detection signal to determine peripheral device A or peripheral device B (such as Step 1 2 4), if peripheral device A or peripheral device B is determined Then, the central processing unit 3 obtains information from the peripheral device A or the peripheral device B whose specifications are slave devices (such as step 1 2 5). If the peripheral device is not found, it will also send a signal to the USB host port. Module 2 ’s master / slave console did not find the device location (ie, went to node 1). When the data is requested, it will send a message to inform the user interface that module 7 has requested the data (such as step 11 4). The user After receiving this information, the interface module 7 will continue to perform the next task (such as step 1 1 3), and the user interface module 7 will first confirm (such as step 114). The task may be copying, printing, and burning the disc. This work item is copying. User interface module 7 will confirm the destination of the data to be copied (step 1 2 0). If the data is to be copied to the internal memory module 4, you can directly copy the data to the internal. Actions of Memory Module 4

16983. ptd Page 19 1221558 V. Description of the invention (15) (such as step 1 1 7), but if the destination of the data copy is the external memory module 5, the location of the external memory module 5 needs to be Confirm (such as step 1 1 8), after confirming the memory location, you can copy the data to its internal (such as step 1 1 9), if it cannot find its location, then send a signal to inform the first USB port 2A and the second USB No device location was found on the master \ slave console of port 2B (ie, go to node 1). If the user wants to copy data to the peripheral device, he must also confirm the location of the peripheral device (step 1 30). After confirming the location of the peripheral device, the data can be copied to the device. Once the device cannot be found, a signal is sent to notify the master \ slave console attached to the USB master port module 2 that no peripheral device is found. Position (enter node 1), after the data copying process is completed, a message is returned to inform the user interface module 7 that the data copying process is complete (step 136). If the user wants to burn the disc (such as the first and the seventh, they need to start through the first USB port 2A and the first), the user interface module ... The master / slave console controls the disc burner by placing it in the first USB port 2A or the second USB port 2B for confirmation (step 140). If it is, a signal is sent back to the user to inform the burner Position confirmation message (such as step i 4 U, modulo, and ', perform disc burning (eg step 142) = moving disc burner

The signal informs the USB host of the port module 2 attached to the twist confirmation, then transmits the position of the burner (to the node 丨). If the user needs to list the data of the disc that is not found on the production station, first, it is also necessary to confirm the print Position of the printer P Personal digital assistant 1 After confirming the position of the printer, it informs step 1 5 0 by signal transmission, confirms (step 1 5 1), and drives the printer to print. 0 User interface module 7 卞 ( Step 152), if

I221558 V. Description of the invention (16) Unable to confirm, then send a signal to notify the master \ slave terminal of the first USB port 2A and the second USB port 2 B that the device location is not found (go to node 1). Based on the above-mentioned embodiment, the user uses the personal digital assistant 1 to search for the required information in the peripheral device (such as the optical disc drive) that is the slave terminal and executes the printing of the required information using the peripheral device such as a printer. Therefore, 'the user interface module 7 first issues a command for finding data to peripheral devices such as the optical disc drive', so that the user interface module 7 first detects the position of the optical disc drive 1 'Once the position of the optical disc drive is determined, the data can be retrieved from the optical disc drive Request, if the peak position of the optical disc drive cannot be reached, that is, the signal that cannot confirm the position of the device is returned to the user interface module 7, and after the data is requested, a signal is sent back to inform the user interface module 7 that the data has been requested. The user interface module 7 immediately performs printing after receiving this serial number. Before printing, the user interface module 7 also confirms the printer position. After confirming the printer position, it returns a letter 5 to inform the user The interface module 7 drives the printer to print data. If the position of the printer cannot be determined, a signal is returned to the user interface module 7. In this implementation method, a 1 digital assistants have all the rights of the master signal transmission and instructions issued by the Department as a function of the show hosts, it has become two slave peripherals exchange of data media. Fig. 5 is a procedure for determining the master and slave attribute specifications of the external peripheral device described in Fig. 3 a. It is connected to the first USB port 2A or the second USB port 2B attached to the personal digital assistant 1.揍 A specification is the peripheral device of the master control device, A and a specification are peripheral devices of the slave device b (The first thing to note here is that 'the first USB port 2A or the second USB port 2B can be connected.

16983.ptd

1221558 V. Description of the invention (17) The specifications are the peripheral equipment of the master or slave, and the description of the implementation is not intended to limit the two (2: 2 specifications for preparation). Get ϊ = program, this situation will appear when the personal digital assistant α, transport = port 2Α to connect with the host of the personal computer, at this time / personal brother one can obtain the personal location through the first USB connection 崞 ^ Digital assistant 丨 internal ^ main two-body module 4 and external memory module 5 file data. In addition, the personal ^ host can also order the personal digital assistant 1 to drive another peripheral connected to its second port 2B. Equipment such as digital cameras, optical disc drives, etc. In this case, the personal digital assistant 1 simultaneously becomes the slave device that cooperates with the master peripheral device and the master control device that controls the connected actions. For this reason, the master control The power is controlled by the peripheral device (personal computer host) whose specifications are the main control end. The operation procedure when reading data and driving the device is that the peripheral device (personal computer host) whose specifications are the main control end. A signal is sent from the outside to the respective master control terminal \ slave control console of the first USB port 2A (step 2 0), and then the slave control console of the master control terminal \ slave control console will The signal is transmitted to the user interface module 7 (step 2 10). After receiving the signal, the user interface module 7 then analyzes the signal content (step 2 2 0), and judges the type of work to be performed by the signal as data search, Print or burn CDs (step 2 30). If the job type is data search, the user interface module 7 needs to pass through the central processing unit 4 and the first USB port 2A and the second USB port 2B. The master / slave console of the owner confirms the location of the data (step 24 0). The data may be stored in the internal memory module 4, the external memory module 5 and peripheral devices.

16983.ptd Page 22 V. Description of the invention (18) ^^^-Put it in the internal memory module level 4, then you can get the data (step 241 〇__ directly from the internal memory module 45, this When the user interface is planted, if the breeding material is stored in the external memory module memory module 5 position (step = reach the test signal to determine the location of the external record group 5, then from the [Bu Department 'once Determine the external memory module 245) '· If no external memory is found ^ = ^ * retrieve data (steps to know the second USB connection number to report the memory location (to ...), and the other is that the console is not It is found that the edge module 7 also sends a detection signal to determine the periphery f of the slave terminal, that is, set (step 242), and determine the periphery of the slave terminal; after it is set, obtain it from the peripheral device B of the slave terminal. Information (step 243), if the brother has not obtained the peripheral device, it will send a signal to the USB master port module 2 > attached to the console did not find the device location (enter node 1), when the guest cable. After receiving the yuan, I also send 彳 § the information to the master USB terminal of the second USB connection cock 2B \ slave for the console to inform that the information has been requested Step 2 4 6). If the user wants to burn the disc, the master \ slave console of the second USB port 2β belongs to the console to determine whether the position of the disc burner is confirmed (step 2 50). Return a signal to inform the console of the location confirmation of the recorder (step 2 5 1) 'and drive the recorder to perform the disc burning operation (step 2 5 2)' If it is not confirmed, send a signal to notify the second USB port 2 The master \ slave console where B belongs does not find the device position (enter node 1) ° If the user issues a data printing instruction through the master peripheral device A connected to the first USB port 2A, first, User interface module 7

16983.ptd

Page 23 I221558 V. Description of the invention (19) After the data printing instruction from the peripheral device A of the console, the printer's position is confirmed through the master \ slave console of the second USB port 2B (steps) 2 3 1). After confirming the printer position, a signal is sent back to notify the master USB terminal 2B that the second USB port 2B belongs to. The printer position of the control console has been determined (step S231), and the user interface then The second USB port 2β belongs to the master \ slave console to drive the printer to print (step S233). If it cannot be confirmed, it sends a signal to notify the second USB port 2B to the master \ slave. The end console did not discover the device location (go to node 1). In summary, the present invention provides a novel method for changing the function of the master and slave terminals, which is applicable to the connection and use of all portable electronic information equipment (such as the PDA in the above embodiment) and peripheral equipment. It can also integrate the connection relationship with peripheral devices through the Host Negotiation Protocol (HNp). It uses a set of specifications for the USB host: \ Slave end port. When the portable electronic information device is two peripheral devices When the device is the master, it is used as the host to control the control of two peripheral devices. If the electronic device is both the master and the slave, the master right will be transferred to the peripheral device that plays the role of master. 'The host peripheral device ^ aa. Drive another peripheral device' Therefore, the portable electronic water device applying the present invention can be adjusted at any time and place to meet the different working needs of the user, without the need to be limited to non-computer host connection Can drive peripheral devices like L 2; it is equipped with two USB ports instead of using a hub. Brother | μ borrow, so each USB port uses independent bandwidth without having to be far away Έ near side and anger ^ ι share loan, it mention the 4 transmission speed, because he has USB ports and from the periphery w

16983. ptd Page 24 1221558 V. Description of the invention (20) The plug-and-play feature makes it easier and faster for future users to use portable electronic information equipment for data processing, and also increases portable electronic information Application range and practical value of equipment. The above is only a preferred embodiment of the present invention, and is not intended to limit the scope of the essential technical content of the present invention. For example, the two USB ports provided by the personal digital assistant 1 are not limited to the first USB. The port can only be set to connect to the peripheral device on the master side, and the second USB port can only be set to connect to the peripheral device on the slave side. It can also interchange the two USB ports or connect the peripheral device on the master side at the same time. The essential technical content of the present invention is broadly defined in the scope of patent application described below. Any technical entity or method completed by others is completely the same as that defined in the scope of patent application described below, or is the same equivalent Changes are deemed to be covered by this patent.

16983.ptd Page 25 1221558 Simple description of the drawings [Simplified description of the drawings] Figure 1 is a block diagram of the hardware architecture, which shows a personal digital assistant (PDA) that uses the method of transforming the functions of the master and slaves of the present invention. Internal hardware architecture; Figure 2 is a software architecture block diagram showing the internal software architecture of a personal digital assistant (PDA) to which the method of function conversion between the master and slaves of the present invention is applied; Figure 3 is a flowchart showing A personal digital assistant applying the present invention, when the attached first USB port 2A and the second USB port 2B are connected to peripheral devices, a procedure for determining the master and slave attribute specifications of the peripheral devices connected to the two USB ports; Figure 4 is a flowchart of data processing when the personal digital assistant to which the present invention is applied is used as the master, and the peripheral device is the slave, which shows that when the personal digital assistant is used as the host, all peripheral devices on the slave are controlled to execute The flow of the routine execution of the action; and Figure 5 is the data processing flow in the case where the personal digital assistant applying the present invention is used as the master and slave simultaneously. Fig. 1 Personal digital assistant 2 USB master \ slave port module 2 A First U S B port module 2B Second USB port module 3 Central processing unit Λ Internal memory module

16983. ptd Page 26 1221558 Brief description of the diagram 5 External memory module 6 Register module 7 User interface module 10 User interface driver 11 File system 12-General device file allocation table 13 Optical disk driver 14 IS09 6 6 0 file architecture 15 USB mass storage specification architecture 16 First USB connection 珲 master \ slave console 17 CD & USB slot configuration table 18 Printer driver 19 Printer specification architecture 20 Second USB connection Port master \ slave console A, B peripherals

16983.ptd Page 27

Claims (1)

1221558 __-—-—— __ VI. Method of patent application scope control and slave-side function conversion method, Cong ># 他 、 夂 narrowly can be applied with 1. a master-7V target double talk knife A, then The portable battery used for the female port is suitable for /, there are ^ ^ ^ ^ -η ^ ^ ^ electronic shell δί1 β on the ridge to make the portable electronic shell, I also serve Due to different operations, the relative masters of external devices (and the relationship between them and the legal system include ... (Host) partners (s 丨 ave) relationship, the rules of the external port of the party ^ each \ portable electronic poverty Information processing equipment set = multiple orders = this order-the cocoa; "quote"; internal information set in the electronic information equipment set the use of the port information? The equipment set a number of external and external peripheral equipment 仃 detection,判 Identify one of the multiple ports and connect it to the shell processing unit. It was found that the multiple external ports immediately caused the external remote access to peripheral equipment, and the data processing unit equipment specifications were judged. An intervening peripheral should carry portable electronic time to the data processing unit. As the master in the setting process, the two devices themselves and the peripheral devices transmit data (· the relationship, and; the type of device is performed / judged): After the bee ’s console is set for this peripheral, it will be determined At the station, the system determines the type of peripheral equipment to which the peripheral equipment belongs t1 and transmits it back to the breeding processing unit to transfer the week 2 Function conversion method; The early 70 series is a central processing unit (CPU). The type of $ informs the data processing order by signal transmission: % 16983. ptd 、 Application for special brake range dim Master and slave function conversion method Speed port. 〇 Zibeixun 3 also has two USB specifications, such as IT special: the function conversion method of the master and slave of item I coexist at the same time: specifications. The system is set to be the coffee master control terminal. Special: Fan: The method of function conversion between the master and slaves in item 1, where the specifications of the peripheral device refer to one of the master and slave devices. For example, if the function conversion method of the master and slave terminals of the first scope of the patent is applied, if the specifications of the external peripheral devices connected to the two external ports are slave devices, the data processing unit is about to carry this portable electronic information. The specifications of the equipment are set as the master. 7. For the function conversion method of the master and slaves in the first scope of the patent application, if the specifications of the external peripherals connected to each of the two external ports / the master are 'slave' and the other is a slave, then The specifications of the portable electronic information equipment will not be at the same time as the master \ slave. 8. For the method of changing the functions of the master and slaves in the first scope of the patent application, wherein the port of the portable electronic information device adopts a USB interface, so that the portable electronic information device coexists with the master terminal \ Slave function, after the console on the port confirms that the type of peripheral equipment connected to it is one of the control device and the slave device, it sets the portable electric r, 3 · 4 · 5 · 6 · master and sub information equipment Master and slave relationship with peripheral equipment. 9 · If the function of the master and slave is changed according to the scope of the first patent application 1221558 6. Scope of patent application. Among them, the portable electronic information device integrates its connection relationship with peripheral devices through the Host Negotiation Protocol (HNP). 10. If the method of function conversion between the master and slaves in item 1 of the scope of the patent application, wherein the external port provided by the portable electronic information device is used for data transmission operations to external peripheral devices, it uses independent The bandwidth is carried out. 16983.ptd Page 30