WO2012151897A1

WO2012151897A1 - Method and device for switching between storage element and expansion element on mobile terminal

Info

Publication number: WO2012151897A1
Application number: PCT/CN2011/082161
Authority: WO
Inventors: 唐小峰; 于冰; 崔鹏刚
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-08-09
Filing date: 2011-11-14
Publication date: 2012-11-15
Also published as: CN102929749A

Abstract

The present invention provides a method and device for switching between a storage element and an expansion element on a mobile terminal. The method comprises: a processor on a mobile terminal detecting an abnormal signal on an expansion element through a link when performing a first communication operation with a storage element, the link being disposed between the processor and the expansion element for transmitting the abnormal signal; and if the abnormal signal is detected, the processor stopping the first communication operation with the storage element, and switching to perform a second communication operation with the expansion element. The present invention solves the problem that the interrupt on an expansion device cannot be detected during the communication between a baseband chip and a storage device and thereby causes abnormity of the expansion device, so that the technical effect of seamless switching between the storage element and the expansion element is achieved.

Description

TECHNICAL FIELD The present invention relates to the field of communications, and in particular to a method and apparatus for switching between a storage element and an expansion element on a mobile terminal. Background technique

SD (Secure Digital) is a standard for memory cards. Currently, SD cards have become the basic configuration of handheld devices such as mobile phones and Ipads. The baseband chips of these handheld devices basically have SD card controllers, and With the development of technology, the application of wifi technology on mobile phones is also becoming more and more popular. Most of the current mainstream wifi chips use the SDIO (Secure Digital I/O) interface. The SDIO interface is an SD card-based interface that is compatible with the SD card interface. The wifi chip passes the SDIO interface and the handheld device. The baseband chips are connected to enable the wifi function. When the wifi chip is connected to the SDIO interface, it can be called an SDIO card. However, at some low-end platforms, in order to save costs, only one SD/SDIO card controller is provided on the baseband chip. Due to the protocol problem between the SDIO card and the SD card, SDIO and SD cards cannot be supported on the same bus at the same time. In the case where the baseband chip has only one controller, it is common practice to add an analog switch between the controller and the peripheral device. The analog switch is used to select whether the current device is connected to an SD card or an SDIO card. 1 is a structural block diagram of a related art handheld device, including: a baseband chip 102, an analog switch 104, an SD card 106, and an SDIO card 108, wherein one end of the analog switch 104 is connected to the baseband chip 102, and the other end is connected to the SD card. 106 is connected to SDIO 108. The baseband chip 102 controls the analog switch 104 through a GPI0 control line to implement SDIO and SD card selection. Although the SDIO card is based on the SD card, it is fully compatible with the SD card in terms of electrical characteristics, but there are some differences in the protocol. The SD card is more suitable for data block storage. SDIO is mainly used for 10 operations of the device, SDIO also has An obvious feature is that it can respond to peripheral interrupts and have one more interrupt signal. In order to be compatible with the SD card, this interrupt pin is located on the data line. An interrupt detection period is defined in the protocol to distinguish the interrupt signal. And the data signal, so that the multiplexing of the data line and the interrupt signal can be achieved. Due to the existence of the SDIO interrupt, the SD/SDI0 controller needs to be able to respond quickly and promptly to interrupt, otherwise the wifi device will be abnormal and the connection will be interrupted. In the process of downloading data through the wifi chip using the above handheld device, the baseband chip 102 needs to switch back and forth between the SD card 106 and the SDIO card 108 through the analog switch 104, so that the data is stored in the SD card during the downloading process. In the process of switching, if the wifi chip is abnormal or interrupted during the process of the baseband chip 102 currently communicating with the SD card 106, the baseband chip 102 is required to switch back to the SDIO card 108 through the analog switch 104 in time. In the related art, switching is performed between the SD card 106 and the SDIO card 108 by the baseband chip 102 by time scheduling, that is, the baseband chip 102 is set in advance with time for communication with the SD card 106 and the SDIO card 108, respectively. However, since the connection between the baseband chip 102 and the SDIO card 108 is disconnected during the communication between the baseband chip 102 and the SD card 106, the abnormal signal on the SDIO card 108 cannot be detected, and therefore, the above signal may not be responded to in time. And switch back to the SDIO card 108 via the analog switch 104 so that the wifi connection may be interrupted. SUMMARY OF THE INVENTION The present invention provides a method and apparatus for switching between a storage element and an expansion element on a mobile terminal, to at least solve the problem in the related art that the interruption on the extension device cannot be detected during the communication between the baseband chip and the storage device. The resulting problem with extended device exceptions. According to an aspect of the present invention, a method for switching between a storage element and an expansion element on a mobile terminal is provided, the method comprising the steps of: the processor on the mobile terminal performing a first communication operation with the storage element Detecting, by the link, an abnormal signal on the extension component, wherein the link is disposed between the processor and the extension component for transmitting the abnormal signal; and if the abnormal signal is detected, the processor stops The first communication operation of the storage element is switched to a second communication operation with the expansion element described above. After switching to the second communication operation with the extension element, the switching method further includes: determining whether the second communication operation between the processor and the extension element ends; and if so, switching the processor to the storage The component communicates. The step of switching to communication with the storage element includes: performing the first communication operation performed before disconnection between the processor and the storage element. The abnormal signal is an interrupt signal generated by the expansion element or an abnormality notification signal generated by the expansion element. The above link is different from the link for transmitting data set between the above processor and the above-described extension element. The storage element includes: an SD card; the extension element includes: an SDIO card. According to another aspect of the present invention, there is provided a switching device between a storage element and an expansion element on a mobile terminal, the processor located on the mobile terminal, comprising: a detecting unit, configured to be in the processor and The storage element detects an abnormal signal on the extension element through a link during a first communication operation, wherein the link is disposed between the processor and the extension element, and is configured to transmit the abnormal signal; It is arranged to stop the first communication operation with the storage element when the abnormal signal is detected, and to switch the processor to perform a second communication operation with the extension element. The switching unit includes: a determining module configured to determine whether the second communication operation between the processor and the extension element ends after switching the processor to the second communication operation with the extension element; switching module, setting The processor is switched to communicate with the storage element when it is determined that the second communication operation between the processor and the extension element has ended. The switching module is further configured to switch the processor to the first communication operation performed before the disconnection of the storage element is performed, when it is determined that the second communication operation between the processor and the extension element has ended. The above link is different from the link set between the above processor and the above-described extension element to transmit data. According to the present invention, the processor on the mobile terminal detects the abnormal signal on the extension component through the link during the communication operation with the storage element, so that the mobile terminal can respond to the abnormal signal on the extension component in time, thereby solving the problem due to the baseband. During the process of communication between the chip and the storage device, the problem of the expansion device abnormality caused by the interruption on the expansion device cannot be detected, thereby achieving the technical effect of seamless switching between the storage component and the expansion component. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram showing a configuration of a handheld device in a related art; FIG. 2 is a block diagram showing a preferred configuration of a switching device between a storage element and an expansion element on a mobile terminal according to an embodiment of the present invention; Is a schematic diagram of a connection between an SDIO card and a baseband chip and an analog switch according to an embodiment of the present invention; FIG. 4 is another preferred structure of a switching device between a storage element and an expansion element on a mobile terminal according to an embodiment of the present invention; block diagram; 5 is a preferred flowchart of a method of switching between a storage element and an expansion element on a mobile terminal according to an embodiment of the present invention; FIG. 6 is a diagram between a storage element and an expansion element on a mobile terminal according to an embodiment of the present invention; Another preferred flow chart of the switching method. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. In the following embodiments, the communication may be implemented by a wireless connection or a wired connection or a combination of both, which is not limited by the present invention. Embodiment 1 This embodiment uses a baseband chip, an SDIO, and an SD card as an example to describe a switching method between a storage element and an expansion element. However, the present invention is not limited to the baseband chip switching between the SDIO and the SD card, and can be applied to other methods. The switching of the processor between other storage elements and expansion elements. 2 is a block diagram of a preferred configuration of a switching device between a storage element and an expansion element on a mobile terminal, including: a baseband chip 202, an analog switch 204 in communication with the baseband chip 202, and an analog switch, in accordance with an embodiment of the present invention. 204 communicates with an SD card 206 (one of the storage elements) and an SDIO card 208 (a type of expansion element) that communicates with the SD card 206. In the preferred embodiment, a link GPIO INT is provided between the SDIO card 208 and the baseband chip 202 to detect an abnormal signal on the SDIO card 208. Through this link GPIO INT, the baseband chip 202 can detect an abnormal signal on the SDIO card 208 in time during communication with the SD card 206. In order to clarify the relationship between the link GPIO INT and the data line, the present invention also shows the connection relationship between the SDIO card 208 and the baseband chip 202 and the analog switch 204 by means of FIG. As shown in FIG. 3, the SDIO card 208 is connected to the analog switch 204 via the data line DATA [0:3], and is connected to the baseband chip 202 via a dedicated link GPIO INT. In the preferred embodiment, the link GPIO INT set to transmit the abnormal signal on the SDIO card 208 is different from the link set between the baseband chip 202 and the SDIO card 208 for transmitting data (ie, the data line DATA). [0:3]) Thus, in the process of the baseband chip 202 communicating with the SDIO card 208, it is not necessary to implement time division multiplexing on the data lines DATA[0:3] to respectively transmit data and abnormal signals, and the data lines can be transmitted. DATA [0:3] is all used to transmit data, and transmits an abnormal signal on the link GPIO INT, which ensures that the baseband chip 202 can obtain the abnormal information of the SDIO card 208 in real time, and at the same time improve the data transmission efficiency. Preferably, the present invention also proposes another processing method. The GPIO INT only transmits the SDIO exception when the processor communicates with the SD card 206. When the analog switch 204 switches back to the SDIO 208, the GPIO INT no longer transmits an abnormality. SDIO's interrupt function is also detected by DAT [0: 3]. After the analog switch is switched back to SDIO 208, the baseband chip 202 and SDIO 208 communicate using the standard SDIO protocol, which makes the changes to the original system smaller and easier. achieve. In order to achieve the above-described switching, the present invention also provides a preferred switching device located in the above-described baseband chip 202, as shown in FIG. 4, between the storage element and the expansion element on the mobile terminal according to the embodiment of the present invention. The switching device includes: a detecting unit 402 configured to detect the SDIO card 208 through the link GPIO INT during the first communication operation of the baseband chip 202 and the SD card 206 (for example, the first communication operation includes: a write operation) An abnormal signal, wherein the link GPIO INT is disposed between the baseband chip 202 and the SDIO card 208, and is configured to transmit an abnormal signal on the SDIO card 208; the switching unit 404 is in communication with the detecting unit 402, and is configured to detect the abnormality The first communication operation with the SD card 206 is stopped at the time of the signal, and the baseband chip 202 is switched to perform the second communication operation with the SDIO card 208 (for example, the second communication operation includes: a data transfer operation). In the above preferred embodiment, the switching device detects the abnormal signal on the extension component through the link during the communication operation with the storage element, so that the mobile terminal can respond to the abnormal signal on the expansion component in time, thereby solving the problem due to the baseband. During the process of communication between the chip and the storage device, the problem of the expansion device abnormality caused by the interruption on the expansion device cannot be detected, thereby achieving the technical effect of seamless switching between the storage component and the expansion component. After switching, the baseband chip 202 can also switch back to communicate with the SD card 206. In order to achieve the object, the present invention further provides a preferred switching unit 404, comprising: a determining module 4041, configured to determine the baseband chip 202 after the baseband chip 202 is switched to perform a second communication operation with the SDIO card 208. Whether the second communication operation between the SDIO cards 208 ends; the switching module 4042, in communication with the determination module 4041, is configured to switch the baseband chip 202 when it is determined that the second communication operation between the baseband chip 202 and the SDIO card 208 has ended. To communicate with the SD card 206. In the present embodiment, the baseband chip 202 can switch back to communicate with the SD card 206 after switching to the SDIO card 208 after implementing the immediate response exception signal. Preferably, when switching back to communicate with the storage element, the baseband chip 202 switches to the first communication operation performed prior to performing the disconnection with the SD card 206. In the present embodiment, the baseband chip 202 can ensure the integrity of communication with the SD card 206 by performing the previous communication operation. Preferably, the abnormal signal may be an interrupt signal generated by the expansion element or an abnormality notification signal generated by the expansion element. In this embodiment, the transmission of the abnormal signal can be performed by different implementations. Embodiment 2 Based on the switching device shown in Figures 2-4, the present invention also provides a preferred method of switching between a storage element and an expansion element on a mobile terminal. In this embodiment, a baseband chip, an SDIO, and an SD card are taken as an example to illustrate a switching method between a storage element and an expansion element. However, the present invention is not limited to the baseband chip switching between the SDIO and the SD card, and can be applied to other processors. Switching between other storage elements and expansion elements. As shown in FIG. 5, a method for switching between a storage element and an expansion element on a mobile terminal includes the following steps:

S502, detecting an abnormal signal on the SDIO card 208 through the link GPIO INT during the first communication operation of the baseband chip 202 and the SD card 206 (for example, the first communication operation includes: a write operation), wherein the link GPIO INT is disposed between the baseband chip 202 and the SDIO card 208 for transmitting an abnormal signal on the SDIO card 208;

S504, if the abnormal signal is detected, the baseband chip 202 stops the first communication operation with the SD card 206, and switches the baseband chip 202 to perform the second communication operation with the SDIO card 208. In the above preferred embodiment, the switching device detects the abnormal signal on the extension component through the link during the communication operation with the storage element, so that the mobile terminal can respond to the abnormal signal on the expansion component in time, thereby solving the problem due to the baseband. During the process of communication between the chip and the storage device, the problem of the expansion device abnormality caused by the interruption on the expansion device cannot be detected, thereby achieving the technical effect of seamless switching between the storage component and the expansion component. After switching, the baseband chip 202 can also switch back to communicate with the SD card 206. In order to achieve the object, the present invention also provides a preferred switching step, comprising: determining whether a second communication operation between the processor and the extension element ends; and if so, switching the processor to the storage The component communicates. In the present embodiment, the baseband chip 202 can switch back to communicate with the SD card 206 after switching to the SDIO card 208 after implementing the immediate response exception signal. Preferably, the step of switching to the communication with the storage element comprises: performing the first communication operation performed before the disconnection between the processor and the storage element. In the present embodiment, the baseband chip 202 can ensure the integrity of communication with the SD card 206 by performing the previous communication operation. Preferably, the abnormal signal may be an interrupt signal generated by the expansion element or an abnormality notification signal generated by the expansion element. In this embodiment, the transmission of the abnormal signal can be performed by different implementations. The entire switching process is described in detail below with reference to FIG. 6. As shown in FIG. 6, the switching method between the storage element and the expansion element on the mobile terminal includes the following steps: S602, after receiving the interrupt signal of the SDIO card, the baseband chip 202 determines whether the analog switch 204 is currently located on the SD card, and SP determines whether the current baseband chip 202 is in communication with the SD card. If it is located, step S604 is performed, otherwise, step S606 is performed.

S604, the operation of the SD card is suspended, and a multiplexing flag is set for the SD card, and the switching module 4042 switches the analog switch 204 to the SDIO card.

S606, the baseband chip 202 processes the interrupt of the SDIO card.

S608. The determining module 4041 determines whether the interrupt of the SDIO card is processed. If the processing is completed, the process goes to S610. Otherwise, the process proceeds to S608, and the determination is continued.

S610. After the interrupt processing is completed, the determining module 4041 determines whether the SD card corresponds to the multiplexing flag. If the multiplexing flag is corresponding, the process goes to step S612. Otherwise, the process goes to step S614.

S612, if the SD card has a multiplexing mark, the SD card is preempted, and the analog switch is switched to the SD card to rewrite or reread the SD card.

S614, performing other processing operations. In the above preferred embodiment, the operation of switching back to the SD card is implemented by multiplexing the flag. This is merely an example. The present invention is not limited thereto, and the operation of switching back to the SD card can be implemented by other similar forms. In the technical solution provided by the embodiment, after the SDIO exception is processed, the SD card is retried. Since the SD card operation is basically read and write, the real-time requirement is not high, and the SD card operation is suspended. If you try again, you can recover. The performance of the SD card will be affected by the point, but it will not affect the use. The multiplexing of SDIO and SD is completed under the premise of sacrificing SD card performance. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A method for switching between a storage element and an expansion element on a mobile terminal, comprising the steps of: detecting, by the processor on the mobile terminal, an abnormality on the extension element through a link during a first communication operation with the storage element a signal, wherein the link is disposed between the processor and the extension component, and configured to transmit the abnormal signal;

If the abnormality signal is detected, the processor stops the first communication operation with the storage element and switches to a second communication operation with the expansion element.

2. The method according to claim 1, wherein, after switching to the second communication operation with the extension element, the method further comprises:

Determining whether the second communication operation between the processor and the extension element ends; if so, the processor switches to communicate with the storage element.

3. The method of claim 2, wherein the step of switching to communicating with the storage element comprises:

The first communication operation performed before the disconnection is performed between the processor and the storage element.

The method according to claim 1, wherein the abnormality signal is an interrupt signal generated by the expansion element, or an abnormality notification signal generated by the expansion element.

5. The method of claim 1, wherein the link is different from a link for transmitting data set between the processor and the expansion element.

6. The method according to claim 1, wherein the storage element comprises: an SD card; the expansion element comprises: an SDIO card.

A switching device between a storage element and an expansion element on a mobile terminal, located in the processor on the mobile terminal, comprising:

a detecting unit configured to detect an abnormal signal on the expansion element through a link during a first communication operation between the processor and the storage element, wherein the link is set in the processor and the Between the expansion elements, for transmitting the abnormal signal;

The switching unit is configured to stop the first communication operation with the storage element when the abnormality signal is detected, and to switch the processor to perform a second communication operation with the expansion element. The apparatus according to claim 7, wherein the switching unit comprises: a determining module configured to determine the processor and the after switching the processor to perform a second communication operation with the extension element Whether the second communication operation between the expansion elements ends; the switching module being configured to switch the processor to the storage when it is determined that the second communication operation between the processor and the extension element has ended The component communicates. The apparatus according to claim 8, wherein the switching module is further configured to switch the processor to the same when it is determined that a second communication operation between the processor and the extension element has ended The storage element performs the first communication operation performed before disconnection. The apparatus according to claim 8, wherein the link is different from a link set between the processor and the extension element to transmit data.