TWI420888B - System and method for detecting usb port of a mobile phone - Google Patents

Description

Mobile phone USB port detection system and method

The present invention relates to a detection system and method, and more particularly to a mobile phone USB port detection system and method.

When using a chip for mobile phone software development, a common external plug-in device such as a universal serial bus (USB, Universal Serial Bus) is not correctly detected by the device when the insertion and removal operation is performed, resulting in a malfunction of the mobile phone, which is easy to occur. Product failure or serious consequences of the user due to lack of experience. Common problems include the USB mode cannot be read correctly, the mobile phone cannot access the data of the memory card, and the file archiving function cannot work normally. It is more likely that the mobile phone will be mistakenly inserted and removed, resulting in the crash of the mobile phone and abnormal functions.

In view of the above, it is necessary to provide a mobile phone USB port detection system and method, which can effectively detect the instant state of the USB port of the mobile phone.

A mobile phone USB port detection system running on a chip of a mobile phone, the voltage of the USB port of the mobile phone being the same as the voltage of the charging port, the chip comprising a storage structure for storing the connection between the mobile phone and the terminal device The system includes: a receiving module, configured to receive a signal transmitted by a data line of the USB port; and a voltage measuring module configured to measure the charging after the receiving module receives the signal transmitted by the data line a voltage of the ;; a recording module, configured to update the connection state stored in the storage structure to an inserted state if the measured voltage of the charging strobe rises; the voltage measuring module is further used for every time t Measuring a voltage of the charging port; determining a module for determining whether the voltage of the charging port is decreased; and the recording module is further configured to: if the voltage of the charging port does not decrease, and the constant time T′ does not change, And updating the connection state stored in the storage structure to the inserted state; and the recording module is further configured to: if the voltage of the charging port decreases, update the connection state stored in the storage structure to In the state, if the voltage drop after charging port of a certain time T 'the constant voltage, the updated connection state stored in the storage structure is unplugged state.

A method for detecting a USB port of a mobile phone, the method comprising the steps of: (a) receiving a signal transmitted by a data line of a USB port; (b) measuring a voltage of the charging port after receiving the signal transmitted by the data line, the charging The voltage of 埠 is the same as the voltage of the USB port of the mobile phone; (c) if the measured voltage of the charging port rises, the connection state stored in the storage structure is updated to the state of insertion; (d) the charging is measured every time t The voltage of 埠 determines whether the voltage of the charging 测 measured at time t decreases, and if the charging 埠 voltage does not decrease, proceeds to step (e), and if the charging 埠 voltage drops, proceeds to step (f); (e) When the voltage does not change within a certain time T', the connection state stored in the update storage structure is the inserted state, and the process proceeds to step (d); (f) the connection state stored in the storage structure is updated to be extracted. State; (g) measuring the voltage of the charging port every time t; and (h) if the voltage within the constant time T' does not change after the voltage of the charging port drops, updating the connection state stored in the storage structure to be pulled out status.

Compared with the prior art, the mobile phone USB port detection system and method utilize the same characteristics of the voltage of the charging port and the USB port, detect the connection state of the USB port through the change of the charging voltage, and update the connection state in time to make the mobile phone Correctly determine the insertion and removal status.

FIG. 1 is a diagram showing an operating environment of a preferred embodiment of the mobile phone USB port detection system of the present invention. The mobile phone USB port detection system 100 runs on the chip 10 of the mobile phone 1. The mobile phone 1 includes at least one USB port 11 and a charging port 12 for periodically measuring the charging port 12 Voltage. It should be noted that the USB port 11 is the same as the charging port 12, so the voltage of the charging port 12 is the voltage of the USB port 11.

The mobile phone 1 can also be connected to a terminal device 2. In the preferred embodiment, the terminal device 2 is a computer. The connection state of the mobile phone 1 and the terminal device 2 includes an inserted state, an inserted state, an unplugged state, and an extracted state, and the connected state is stored in a storage structure 101 in the wafer 10, in the storage structure 101. Only one connection status is stored.

The USB port 11 includes a data line 111. When the mobile phone 1 is connected to the terminal device 2, the data line transmits a signal to the mobile phone USB port detection system 100, and the mobile phone USB port detection system 100 Perform detection work.

As shown in FIG. 2, it is a functional module diagram of the mobile phone USB port detection system 100 in FIG. The module is a software program segment with a specific function. The software is stored in a computer readable storage medium or other storage device and can be executed by a computer or other computing device including a processor to complete a series of USB detection processes. The USB detection system 100 includes a receiving module 1000, a voltage measuring module 1001, a determining module 1002, and a recording module 1003.

The receiving module 1000 is configured to receive a signal transmitted by the data line 111 of the USB port 11 when the user connects the mobile phone 1 to the terminal device 2 through the USB port 11.

The voltage measurement module 1001 is configured to measure the voltage of the charging port 12 after the receiving module 1000 receives the signal transmitted by the data line 111.

The determining module 1002 is configured to determine whether the voltage of the charging port 12 measured by the voltage measuring module 1001 is rising.

The recording module 1003 is configured to determine that the connection state of the mobile phone 1 is in an inserted state when the measured voltage of the charging port 12 is increased, and update the connection state stored in the storage structure 101 to an inserted state.

The voltage measurement module 1001 is further configured to measure the voltage of the charging port 12 every time t. In the preferred embodiment, the voltage measurement module 1001 measures the voltage of the charging port 12 every 4.615 ms.

The determining module 1002 is further configured to determine whether the voltage measured by the voltage measuring module 1001 every time t decreases.

The determining module 1002 is further configured to determine whether the voltage of the charging port 12 does not change within a certain time T' when the voltage measuring module 1001 measures that the voltage has not decreased. In the preferred embodiment, T' = 0.3 s.

The recording module 1003 is further configured to: when the voltage of the charging buffer 12 rises without falling, and the voltage of the charging buffer 12 does not change within a certain time T′, determine that the connection state of the mobile phone 1 is the inserted state. The connection state stored in the update storage structure 101 is the inserted state.

The recording module 1003 is further configured to: when the voltage measuring module 1001 measures the voltage drop, determine that the connection state of the mobile phone 1 is an unplugged state, and update the connection state stored in the storage structure 101 to Pull out the middle state.

The recording module 1003 is further configured to: when the voltage of the charging buffer 12 drops and the voltage of the charging buffer 12 does not change within a certain time T′, the recording module 1003 determines that the connection state of the mobile phone 1 is The state is removed, and the connection state stored in the update storage structure 101 is the extracted state.

FIG. 3 is a flow chart of a method for a preferred embodiment of the method for detecting a USB port of a mobile phone according to the present invention.

In step S30, when the user connects the mobile phone 1 to the terminal device 2 through the USB port 11, the receiving module 1000 receives the signal transmitted by the data line 111 of the USB port 11.

Step S31, after receiving the signal transmitted by the data line 111, the voltage measurement module 1001 measures the voltage of the charging port 12.

In step S32, the determining module 1002 determines whether the measured voltage of the charging port 12 has risen. If the measured voltage of the charging port 12 rises, the process proceeds to step S33. If the measured voltage of the charging port 12 does not rise, the flow ends.

In step S33, the recording module 1003 determines that the connection state of the mobile phone 1 is in the inserted state, and updates the connection state stored in the storage structure 101 to the inserted state, and proceeds to step S34.

In step S34, the voltage measurement module 1001 measures the voltage of the charging port 12 every time t. In the preferred embodiment, the voltage measurement module 1001 measures the voltage of the charging port 12 every 4.615 ms.

In step S35, the determining module 1002 determines whether the voltage measured by the voltage measuring module 1001 every time t decreases. If the measured voltage drops, the process proceeds to step S38. If the measured voltage has not decreased, the process proceeds to step S36.

In step S36, the determining module 1002 determines whether the voltage of the charging port 12 is constant within a certain time T'. In the preferred embodiment, T' = 0.3 s. When the voltage of the charging cassette 12 does not change within a certain period of time T', the flow proceeds to step S37. When the voltage of the charging cassette 12 changes within the certain time T', the process goes to step S34.

In step S37, the recording module 1003 determines that the connection state of the mobile phone 1 is the inserted state, and the connection state stored in the update storage structure 101 is the inserted state, and the process goes to step S34.

In step S38, the recording module 1003 determines that the connection state of the mobile phone 1 is in the unplugged state, and updates the connection state stored in the storage structure 101 to the unplugged state.

In step S39, the voltage measuring module 1001 measures the voltage of the charging port 12 every time t.

In step S40, the determination module 1002 determines whether the voltage of the charging port 12 does not change within a certain time T'. In the preferred embodiment, T' = 0.3 s. When the voltage of the charging cassette 12 does not change for a certain period of time T, the process proceeds to step S41. When the voltage of the charging port 12 changes within a certain period of time T', that is, the voltage rises, the process goes to step S42.

In step S41, the recording module 1003 determines that the connection state of the mobile phone 1 is the extracted state, and the connection state stored in the update storage structure 101 is the extracted state.

In step S42, the determining module 1002 determines whether the voltage of the charging port 12 rises during the predetermined time T'. When the voltage of the charging port 12 rises, the process goes to step S33. If the voltage of the charging port 12 drops, the process goes to step S39.

The above is only the preferred embodiment of the present invention, and has been used in a wide range of applications. Any other equivalent changes or modifications which are not departing from the spirit of the present invention should be included in the following claims. Inside.

1. . . Mobile phone

2. . . Terminal device

10. . . Wafer

11. . . USB埠

12. . . Charging

100. . . Mobile phone USB port detection system

101. . . Storage structure

111. . . Data line

1000. . . Receiving module

1001. . . Voltage measurement module

1002. . . Judging module

1003. . . Recording module

S30. . . Receive the signal sent by the USB cable

S31. . . Measuring the voltage value of the charging port

S32. . . Does the voltage of the charging device rise?

S33. . . Update the storage state stored in the storage structure to the inserted state

S34. . . Measuring the voltage value of the charging ces every time t

S35. . . Is the voltage of the charging device falling?

S36. . . Is the voltage value of the charging port constant within a certain time T'?

S37. . . Update the storage state stored in the storage structure to the inserted state

S38. . . Update the storage state stored in the storage structure to the unplugged state

S39. . . Measuring the voltage value of the charging ces every time t

S40. . . Is the voltage value of the charging T in a certain time T' unchanged?

S41. . . Update the storage state stored in the storage structure to the extracted state

S42. . . Does the voltage value of the charging port rise?

1 is a diagram showing the operating environment of a preferred embodiment of the mobile phone USB port detection system of the present invention.

2 is a functional block diagram of the mobile phone USB port detection system 100 of FIG.

3 is a flow chart of a method for a preferred embodiment of the method for detecting a USB port of a mobile phone according to the present invention.

S30. . . Receive the signal sent by the USB cable

S31. . . Measuring the voltage value of the charging port

S32. . . Does the voltage of the charging device rise?

S33. . . Update the storage state stored in the storage structure to the inserted state

S34. . . Measuring the voltage value of the charging ces every time t

S35. . . Is the voltage of the charging device falling?

S36. . . Is the voltage value of the charging port constant within a certain time T'?

S37. . . Update the storage state stored in the storage structure to the inserted state

S38. . . Update the storage state stored in the storage structure to the unplugged state

S39. . . Measuring the voltage value of the charging ces every time t

S40. . . Is the voltage value of the charging T in a certain time T' unchanged?

S41. . . Update the storage state stored in the storage structure to the extracted state

S42. . . Does the voltage value of the charging port rise?

Claims (6)

A mobile phone USB port detection system running on a chip of a mobile phone, the voltage of the USB port of the mobile phone being the same as the voltage of the charging port, the chip comprising a storage structure for storing the connection between the mobile phone and the terminal device The system includes: a receiving module, configured to receive a signal transmitted by a data line of the USB port; and a voltage measuring module configured to measure the charging after the receiving module receives the signal transmitted by the data line a voltage of the ;; a recording module, configured to update the connection state stored in the storage structure to an inserted state if the measured voltage of the charging strobe rises; the voltage measuring module is further used for every time t Measuring a voltage of the charging port; determining a module for determining whether the voltage of the charging port is decreased; and the recording module is further configured to: if the voltage of the charging port does not decrease, and the constant time T′ does not change, And updating the connection state stored in the storage structure to the inserted state; and the recording module is further configured to: if the voltage of the charging port decreases, update the connection state stored in the storage structure to In the state, if the voltage drop after charging port of a certain time T 'the constant voltage, the updated connection state stored in the storage structure is unplugged state. For example, in the mobile phone USB port detection system described in claim 1, the t is 4.615 ms and the T' is 3 s. A method for detecting a USB port of a mobile phone, the method comprising the steps of: (a) receiving a signal transmitted by a data line of a USB port; (b) measuring a voltage of the charging port after receiving the signal transmitted by the data line, the charging The voltage of 埠 is the same as the voltage of the USB port of the mobile phone; (c) if the measured voltage of the charging port rises, the connection state stored in the storage structure is updated to the state of insertion; (d) the charging is measured every time t The voltage of 埠 determines whether the voltage of the charging 测 measured at time t decreases, and if the charging 埠 voltage does not decrease, proceeds to step (e), and if the charging 埠 voltage drops, proceeds to step (f); (e) When the voltage does not change within a certain time T', the connection state stored in the update storage structure is the inserted state, and the process proceeds to step (d); (f) the connection state stored in the storage structure is updated to be extracted. State; (g) measuring the voltage of the charging port every time t; and (h) if the voltage within the constant time T' does not change after the voltage of the charging port drops, updating the connection state stored in the storage structure to be pulled out status. The method for detecting a mobile phone USB port as described in claim 3, wherein the t is 4.615 ms and the T' is 3 s. The method for detecting a mobile phone USB port according to claim 3, wherein the step (e) further comprises: when the charging voltage changes within a certain time T', then the process proceeds to the step (d). The method for detecting a mobile phone USB port according to claim 3, wherein the step (h) further comprises: determining whether the voltage of the charging device is changed when the voltage changes within a certain time T′ after the voltage of the charging device drops If the voltage of the charging port rises, go to step (c); and if the voltage of the charging port drops, go to step (g).