TW200821893A - A switching circuit and method thereof - Google Patents

Abstract

A switch circuit and method thereof used for connecting a cell phone to an electronic device. The switch circuit is disposed on the cell phone. The switch circuit includes a connector and a switch, in which the connector is used to connect the cell phone to a second interface of the electronic device. The switch is used for switching and connecting a first master or a first slave of the cell phone to the second interface of the electronic device. If the cell phone detects the electronic device, the cell phone generates a device enable signal. If the device enable signal is logic 1, the switch connects the first master to the electronic device, other it connects the first slave to the electronic device.

Description

200821893 IX. Description of the Invention: [Technical Field] The present invention relates to a circuit switching device and a method thereof for use in a mobile phone, and a method thereof Special, so that MP3 music on the flash drive can be played through the phone.

Store the MP3 music that the user wants to play. However, the memory space on the mobile phone is limited, and the user's requirement for storing MP3 songs in large quantities cannot be met. Therefore, when you need to store a large number of MP3 songs, you usually store the songs on a USB flash drive with a universal serial bus (USB), and then connect the P-panel to the mobile phone's universal serial bus main interface. When the flash drive is connected to the main serial communication main interface on the mobile phone, then the mm on the flash drive is played through the MP3 application on the mobile phone. Although the mobile phone has a master serial bus master and a slave slave, the connector on the mobile phone can only connect the external universal serial bus main interface to the universal serial bus inside the mobile phone. ι面, so the interface with the flash drive, can not be directly connected to the phone's universal serial bus main interface, you must use the hard disk external box (USB 〇tg) transfer mechanism, in order to connect the flash drive to the phone The main interface and play MP3 music using the MP3 app on your phone. Although the hard disk external box can connect the flash drive to the universal serial bus main interface in the mobile phone, the hard disk external box can only be used for the universal serial port 200821893 row 2_0 (USB 2.0) interface, which cannot be applied to the current mobile phone. Universal Serial Bus (USB 1.0) interface. In addition, hard disk enclosures are expensive to manufacture and require additional licensing fees. Therefore, a new circuit switching device is needed to connect the flash drive to the main interface of the mobile device in the mobile phone, so that the Mp3 music on the portable device can be played through the Mp3 application on the mobile phone, and the production cost is reduced.

SUMMARY OF THE INVENTION Accordingly, it is an aspect of the present invention to provide a circuit switching apparatus that enables an interface of an electronic device to be connected to a main interface of a mobile phone. According to an embodiment of the invention, the circuit switching device is disposed on a hand-held device, wherein the external device is connected to the electronic device, wherein the mobile phone has a first-main interface, a first-slave interface, and the electronic device has a second interface. The circuit switching device includes a connector and a "switch", the connector is for the electronic device = the second interface; the switch is for the connector to switch and consume the brother-master interface or the first-to-slave interface The second interface of the electronic device. Another aspect of this fish is to provide a circuit switching method, which can be coupled to the first interface of the mobile phone or the first interface or the first interface to the first interface of the electronic device. According to another embodiment of the present invention, the circuit switching method detects an electric device: a device transmits a device end enable signal, and when the device end enables a signal: the brother: the logic bit is on time, the first main interface of the mobile phone is lightly connected. To the electronic skirt

The field I enable signal has a Tiro M λ, and the buddy is connected to the electronic device. 6 200821893 In summary, the circuit switching device and the method thereof are capable of connecting the electronic device to the general-purpose serial bus of the mobile phone, and the universal serial bus of the disk can be connected from the interface. To the mobile phone's universal serial bus main interface, the deleted music in the flash drive can be played through the MP3 application on the mobile phone. [Embodiment]

Referring to Fig. 1, there is shown a manner in which a mobile phone (9) and an electronic device 1G1 are connected in accordance with an embodiment of the present invention. The double-ended connector 1G3, for example, the male-fitting connector H) 3' has two connector coffees and i (four), which are used to connect the electronic device to the same type when the mobile phone (9) is connected to the electronic device (4), and cannot be directly connected. The mobile phone 1G5, wherein the mobile phone 1() 5 has a connector 105a of a universal serial bus. The electronic device has a second interface (not shown in the figure:), such as a flash drive, having a universal serial flow interface. By connecting the body 101 to the connector 103a and connecting the connector i〇3b to the connector 105a of the mobile phone 2, the portable disk 1〇1 can be connected with the mobile phone 1〇5, and the data stored on the portable disk 101 is thus Can be passed to the phone 丨〇 5. More than a month, ', 苐 2 diagram, which shows a circuit switch I in the mobile phone according to an embodiment of the present invention, including a switch 2〇1, a power supply device 2〇3, a connector 105a, The control unit 2〇7, the first main interface 2ΐ, and a first slave interface 209. The first main interface and the first slave interface, for example, the universal serial interface main interface 211 and the universal serial bus from the interface 2〇9, are electrically connected to switch to 201' and are electrically connected through the switch 2〇 To the connector 105a. The power supply device 2〇3 is used to supply a voltage source to the switcher 7 200821893 The control unit 207 is controlled by a software to provide a device end enable signal 213 to the SW contact of the switch 201; the contact of the switch 201 GND Ground 'The contact VDD is connected to the power supply unit 2〇3. The switch 201, the universal serial bus main interface 211, the universal serial bus slave interface 209, and the connector l〇5a have positive data ends (D+) DP-SW1, DP-SW2, DP-SW3, DP~M, DP, respectively. A S, DP-C, and negative data end (D-) DN-SW1, DN-SW2, DN-SW3, DNJVI, DN-S 'DN-C, where the data side DP-c, DP-s, DP -M by the universal sequence bus 215, 223, 219 and the positive data terminal j) P_SWl,

DP-SW2, DP-SW3 are connected, and the negative data ends dn_C, DN_S, and DN_M are connected to the negative data terminals DN_SW DN_SW2 and DN-SW3 by the common sequence bus bars 217, 225, and 221, respectively, for transmitting differential signals. Type of universal sequence bus block. In this embodiment, when the software on the mobile phone detects the plug-in electronic device (such as a flash drive) on the connector l〇5a, since the flash drive has a universal serial bus interface, the mobile phone The software causes the control unit t1 207 to send the device end enable signal 213 having the _th logic level to switch the circuit in the switch 201, so that the positive data terminal Dp_swi and the negative data terminal DN-SW1 are electrically connected to the positive The data terminal Dp-sw3 and the negative data terminal N-SW3 make the connection 105a and the universal serial bus main interface 211, and the data on the portable disk can be transmitted to the universal serial bus main interface through the switch 2〇1. 2U. For example, when the device end enable signal 213 has a first logic level, the positive data terminal Dp can be connected to another positive data 8 by a single-pole switch (not shown) in the switch. DP-SW3. After the switch 201 connects the connector 105a to the universal serial bus master interface 2n, the universal sequence bus master interface 211 will access the data on the flash drive in accordance with the commands of the application on the mobile phone. For example, if the user operates the MP3 application on the mobile phone and wants to play the MP3 music stored on the portable disk, the ΜΡ3 application makes an instruction to make the universal serial bus main interface 211 pass through the switch 2〇1 and The connector reads 1%% of the music deleted on the flash drive' and then plays the Μ3 music data from the MP3 application. In addition, in the circuit switching device 200, the data stored in the mobile phone 1 to 5 can also be transferred from the interface 209 to a host (not shown in the figure) by its universal serial bus. For example, when the user needs to read the photo stored on the hand through the host, only the host is connected to the connector l〇5a, and the software on the mobile phone detects the connection on the connector 1〇5^. Device--the host with the main interface of the universal serial bus. At this time, the softness on the mobile phone causes the control unit 2G7 to send the device with the second logic level to cause the mi3 to switch the circuit in the connector, so that The universal serial bus f is connected from the interface 2 〇 9 to the host through the connector 1 〇 5 a, so that the host can buy the photos stored in the mobile phone. As can be seen from the above, the circuit switching device and the method thereof according to an embodiment of the present invention can connect the flash drive to the mobile terminal's universal serial 11 main stream interface, so that the flash drive _MP3 music can be played through the deleted application on the mobile phone. The host can also be connected to the universal serial bus interface of the mobile phone, so that the host can access the data in the mobile phone. 200821893 The present invention has been disclosed in the above-described preferred embodiments, but it is intended to be used in the technical field of the present invention, and can be actuated and retouched without departing from the spirit and scope of the present invention. The scope of protection of the present invention is subject to the definition of the scope. Section. Monthly patent [Simplified illustration]

In order to make the above and other objects, features, advantages and embodiments of the present invention more obvious, the detailed description of the drawings is as follows: FIG. 1 is a diagram showing a connection of a mobile phone nightmare according to an embodiment of the present invention. the way. /, Ding Yi placed the second change device. The figure shows the circuit cut in the mobile phone according to the present invention. [Main component symbol description] 101: Portable disk 103: Male to male connector 103a: Connector 103b: Connector 105: Mobile phone 105a: Connector 200: Circuit switching Device 201: switch 203: power supply device 200821893

207: Control unit 209: Universal sequence bus slave interface 211 · Universal sequence bus master interface 213: Device side enable signal 215: Universal sequence bus 217: Universal sequence bus 219: Universal sequence bus 221: Universal sequence Bus 223: Universal Sequence Bus 225: General Sequence Bus VDD, GND ··Contact SW3 ·· SW3 :

DP C, DP S, DP Μ, DP SW Bu DP SW2, DP _ — — — — - Positive data side

DN C, DN S, DN M, DN SW Bu DN SW2, DN Negative Data Terminal 11

Claims (1)

200821893 Enclosed, patent application model 1. A circuit switching device is installed in an electronic device, wherein the mobile phone is connected to the mobile phone, and the mobile phone has a first main device. a circuit, a younger one, an interface, a connection: a second interface, the circuit switching device includes: - switching: connecting the second interface of the electronic device; and L, coupled to the connector main interface or the first An artificial knife is coupled to the second side of the electronic device to the second interface of the electronic device. 2. If the second interface is the interface from the second paragraph of the patent application scope, the switcher will change the clothes and set the interface. The H-Die-Master interface is coupled to the second interface. If the circuit is cut as the main interface described in the fourth paragraph of the application, the switcher switches the first slave medium;:; #一4·switching circuit as described in the patent application scope The device, wherein the first main " face, the first slave interface, and the second interface bus interface. The sequence switching device according to the invention of claim 5, wherein the complex electronic device is a flash drive. ^ 6. The circuit switching device according to claim 1, wherein the 哕12 200821893 electronic device is a computer-based material science secret system circuit, and the system is the main body of the mobile phone. Or the first slave interface is coupled to an interface. The circuit switching method includes: the electronic device is set to - the electronic device is sent out - the device end enable signal; and the second: = the energy signal has the - first logic level, The device is connected to the first device, and the device is configured to have a second logic coupled to the second slave interface to the electronic device. The second application is specifically for the circuit switching method described in item 7, wherein the flow is arranged. , 6 haidi one interface, the second interface is a general sequence sink 9 · "patent _ 7th item of electricity when the electronic device is a flash drive, the device: method; a logic level.衣1碥致此的旒 has the circuit switching method described in item 7 of the first towel μ patent, except that the electronic device is a computer main unit, ^ the second logic level. Have 13