CN101452732B - Storage apparatus and control interface method and system - Google Patents
Storage apparatus and control interface method and system Download PDFInfo
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- CN101452732B CN101452732B CN2008101888679A CN200810188867A CN101452732B CN 101452732 B CN101452732 B CN 101452732B CN 2008101888679 A CN2008101888679 A CN 2008101888679A CN 200810188867 A CN200810188867 A CN 200810188867A CN 101452732 B CN101452732 B CN 101452732B
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Abstract
The invention discloses a storage device and a method and a system for controlling interfaces. The storage device comprises: a control unit for outputting an interface control signal, an interface enabling circuit for calculating the interface control signal, a first interface power supply signal and a second interface power supply signal output by the control unit and outputting an enabling signal and an interface selection module for selecting a corresponding interface according to the enabling signal output by the interface enabling circuit. The storage device, the method and the system can reduce the operation load of users.
Description
Technical field
The present invention relates to the memory device technical field, relate in particular to method, the system of memory device and control interface.
Background technology
The information data interface of multiple electronic product may be also inequality.In order to make same memory device carry out data transmission with multiple electronic product, many interface memory devices have appearred.
To have USB (universal serial bus) (USB, Universal Serial BUS) the double nip memory device of interface and ExpressCard interface is an example, when the needs USB interface, select USB interface by the interface selector button on the memory device, when needs ExpressCard interface, select the ExpressCard interface by this interface selector button equally.
The inventor is in research process, find that there is following shortcoming at least in above-mentioned many interface memory devices with interface selector button: the operation burden that has increased the user, when the interface of user's needs changes, select by the interface selector button always, be not easy to the user and use.And the interface selector button is a mechanical hook-up, and long-term the use easily damaged, in case the interface selector button damages, many interface memory devices can not switch between many interfaces.
Summary of the invention
In view of this, the embodiment of the invention provides method, the system of a kind of memory device and control interface, to alleviate user's operation burden.
A kind of memory device, described memory device comprises:
Control module is used for the Output Interface Control signal;
The interface enable circuit is used for described interface control signal, the first interface power supply signal and the second interface power supply signal of described control module output are calculated the output enable signal;
Interface is selected module, is used for selecting corresponding interface according to the described enable signal of described interface enable circuit output.
A kind of method of control store equipment interface, described method comprises:
Reception is from the interface control signal of control module;
Adopt the described interface control signal and the first interface power supply signal and the second interface power supply signal to calculate the output enable signal;
Select corresponding interface according to described enable signal.
A kind of system of control store equipment interface, described system comprises:
Memory device, described memory device comprise first interface and second interface;
Described memory device is used for the order according to main frame, the Output Interface Control signal; Described interface control signal, the first interface power supply signal and the second interface power supply signal are calculated the output enable signal; Select corresponding interface according to described enable signal.
As can be seen, the interface enable circuit receives the interface control signal of control module output, and docking port control signal, the first interface power supply signal, the second interface power supply signal are calculated, select module output enable signal to interface, interface selects module to select corresponding interface according to the enable signal that receives.Circuit selects corresponding interface to replace button to select corresponding interface, has effectively alleviated the user and has operated burden, and is user-friendly, and need not make the user worry the problem that button damages.
Description of drawings
Fig. 1 is the embodiment of the invention one a memory device virtual architecture block diagram;
Fig. 2 is the double nip memory circuit figure of the embodiment of the invention two preferred USB interface under the situation that two interfaces are all powered;
Fig. 3 is the double nip memory circuit figure of the embodiment of the invention three preferred USB interface under the situation that two interfaces are all powered;
Fig. 4 is the double nip memory circuit figure of the embodiment of the invention four preferred ExpressCard interface under the situation that two interfaces are all powered;
Fig. 5 is the double nip memory circuit figure of the embodiment of the invention five preferred ExpressCard interface under the situation that two interfaces are all powered;
Fig. 6 is the double nip memory circuit figure of the embodiment of the invention six preferred ExpressCard interface under the situation that two interfaces are all powered;
Fig. 7 is the double nip memory circuit figure of the embodiment of the invention seven preferred USB interface under the situation that two interfaces are all powered;
Fig. 8 is the method flow diagram of the embodiment of the invention eight control store equipment interfaces;
Fig. 9 is the system construction drawing of the embodiment of the invention nine control store equipment interfaces.
Embodiment
For above-mentioned feature, the advantage that makes the embodiment of the invention becomes apparent more, the embodiment of the invention is elaborated below in conjunction with embodiment.
Embodiment one:
Please refer to Fig. 1, Fig. 1 is the embodiment of the invention one a memory device virtual architecture block diagram, and this memory device comprises:
Interface enable circuit 102 is used for described interface control signal, the first interface power supply signal and the second interface power supply signal of control module 101 outputs are calculated the output enable signal;
Interface is selected module 103, is used for selecting corresponding interface according to the enable signal of interface enable circuit 102 outputs.
Wherein, first interface can be USB interface, ExpressCard interface; Second interface can be USB interface, ExpressCard interface.Interface control signal can be the control signal by the docking port of main frame initiation, and for example, control module 101 receives hardware delete command or the interface mask off command that main frames send, and produces the interface control signal of correspondence then according to these orders.
As can be seen, the interface enable circuit receives the interface control signal of control module output, and docking port control signal, the first interface power supply signal, the second interface power supply signal are calculated, select module output enable signal to interface, interface selects module to select corresponding interface according to the enable signal that receives.Circuit selects corresponding interface to replace button to select corresponding interface, has effectively alleviated the user and has operated burden, and is user-friendly, and need not make the user worry the problem that button damages.
Embodiment two:
Be example with the double nip memory device that comprises USB interface and ExpressCard interface below, the double nip memory device of preferred USB interface is described.
Please refer to Fig. 2, Fig. 2 is the double nip memory circuit figure (the ExpressCard interface has only marked the main line of selecting module with interface) of the embodiment of the invention two preferred USB interface under the situation that two interfaces are all powered, and this double nip memory device can comprise:
The first Sheffer stroke gate 202-1 is used for the interface control signal of USB interface power supply signal and control module 201 outputs is carried out and non-calculating, and output signal;
The second Sheffer stroke gate 202-2 is used for output signal and the ExpressCard interface power supply signal of the first Sheffer stroke gate 202-1 are carried out and non-calculating, and output enable signal (ENA);
Interface is selected module 203, is used for selecting corresponding interface according to the ENA of second Sheffer stroke gate 202-2 output; ENA is a high level, and interface selects module 203 to select USB interface, and ENA is a low level, and interface selects module 203 to select the ExpressCard interface.
Wherein, the circuit of the first Sheffer stroke gate 202-1 and second Sheffer stroke gate 202-2 composition can be a kind of specific implementation of the interface enable circuit 102 among the embodiment one.
Interface its interface power supply signal when power supply is a high level, and its interface power supply signal was not a low level when interface was powered.The interface control signal of control module 201 outputs is the USB interface control signal; When memory device adopted the power supply of ExpressCard interface, the USB interface control signal was defaulted as high level, and this moment, then the USB interface control signal kept high level if USB interface is inserted main frame; When having deleted the USB interface of memory device in the main frame, the USB interface control signal becomes low level, and when memory device next time inserted main frame or USB interface again and inserts main frame again, the USB interface control signal reset to high level.
In the circuit diagram shown in Figure 2, USB interface control signal and USB interface power supply signal are undertaken and non-calculating by the first Sheffer stroke gate 202-1, export a signal, the output signal of the first Sheffer stroke gate 202-1 and ExpressCard interface power supply signal are undertaken and non-calculating by the second Sheffer stroke gate 202-2, output ENA.The double nip memory device of present embodiment can guarantee under the situation that USB interface and ExpressCard interface are all powered like this, the preferred USB interface of double nip memory device.Present embodiment can be with reference to following process:
(1) when the USB interface power supply, when the ExpressCard interface is not powered, the USB interface control signal of high level and USB interface power supply signal are by the first Sheffer stroke gate 202-1, output signal is a low level, the output signal of the first Sheffer stroke gate 202-1 and ExpressCard power supply signal are by the second Sheffer stroke gate 202-2, the ENA of output is a high level, and interface is selected the ENA selection USB interface of module 203 according to high level;
(2) do not power when USB interface, during the power supply of ExpressCard interface, the USB interface control signal of high level and USB interface power supply signal are by the first Sheffer stroke gate 202-1, output signal is a high level, the output signal of the first Sheffer stroke gate 202-1 and ExpressCard power supply signal are by the second Sheffer stroke gate 202-2, the ENA of output is a low level, and interface selects module 203 to select the ExpressCard interface according to low level ENA;
(3) when USB interface and ExpressCard interface are all powered, the USB interface control signal of high level and USB interface power supply signal are by the first Sheffer stroke gate 202-1, output signal is a low level, the output signal of the first Sheffer stroke gate 202-1 and ExpressCard interface power supply signal are by the second Sheffer stroke gate 202-2, the ENA of output is a high level, and interface is selected the ENA selection USB interface of module 203 according to high level;
(4) when USB interface and ExpressCard interface are all powered, if main frame has been deleted USB device, the USB interface control signal of control module 201 outputs becomes low level, then USB interface control signal and USB interface power supply signal are by the first Sheffer stroke gate 202-1, output signal is a high level, the output signal of the first Sheffer stroke gate 202-1 and ExpressCard interface power supply signal are by the second Sheffer stroke gate 202-2, the ENA of output is a low level, and interface selects module 203 to select the ExpressCard interface according to low level ENA.
The technical scheme of present embodiment, the first Sheffer stroke gate 202-1 and the second Sheffer stroke gate 202-2 calculate USB interface control signal, USB interface power supply signal, ExpressCard interface power supply signal, select module output enable signal to interface, interface selects module to select corresponding interface according to the enable signal that receives.Circuit selects corresponding interface to replace button to select corresponding interface, has effectively alleviated the user and has operated burden, and is user-friendly, and need not make the user worry the problem that button damages.And USB interface control signal and USB interface power supply signal are undertaken and non-calculating by the first Sheffer stroke gate 202-1, guarantee under the situation that USB interface and ExpressCard interface are all powered the preferred USB interface of double nip memory device.
Embodiment three:
Please refer to Fig. 3, Fig. 3 is the double nip memory circuit figure (the ExpressCard interface has only marked the main line of selecting module with interface) of the embodiment of the invention three preferred USB interface under the situation that two interfaces are all powered, and this double nip memory device can comprise:
The first Sheffer stroke gate 302-1 is used for first interface control signal and the USB interface power supply signal of control module 301 outputs are carried out and non-calculating, exports the 3rd signal;
With door 302-3, be used for second interface control signal and the ExpressCard interface power supply signal of control module 301 outputs are carried out and calculating, export the 4th signal;
The second Sheffer stroke gate 302-2 is used for the 3rd signal of first Sheffer stroke gate 302-1 output and the 4th signal with door 302-3 output are carried out and non-calculating output ENA;
Interface is selected module 303, is used for selecting corresponding interface according to the ENA of second Sheffer stroke gate 302-2 output; ENA is a high level, and interface selects module 303 to select USB interface, and ENA is a low level, and interface selects module 303 to select the ExpressCard interface.
Wherein, the first Sheffer stroke gate 302-1, the circuit formed with door 302-3 and the second Sheffer stroke gate 302-2 can be a kind of specific implementations of the interface enable circuit 102 among the embodiment one.
First interface control signal is the USB interface control signal, is defaulted as high level; Second interface control signal is the ExpressCard interface control signal, is defaulted as high level, and when needs shielding ExpressCard interface, then second interface control signal becomes low level.Second interface control signal becomes low level, owing to deleted the ExpressCard interface of memory device in the main frame, perhaps, main frame sends ExpressCard interface mask off command to memory device.
In the circuit shown in Figure 3, low level second interface control signal of control module 301 outputs can be realized the shielding to the ExpressCard interface.No matter whether the ExpressCard interface powers, and can not select the ExpressCard interface, to realize the shielding to the ExpressCard interface.
For example, when USB interface is not powered, during the power supply of ExpressCard interface, first interface control signal and the USB interface power supply signal of the high level of control module 301 outputs are undertaken and non-calculating by the first Sheffer stroke gate 302-1, export the signal of a high level.According to the control of main frame, second interface control signal of control module 301 output low levels and ExpressCard interface power supply signal are exported a low level signal by carrying out with door 302-3 and calculating.The output signal of the first Sheffer stroke gate 302-1 with undertaken and non-calculating by the second Sheffer stroke gate 302-2 with the output signal of door 302-3, output high level ENA.At this moment, interface selects module 303 to select the not USB interface of power supply according to the ENA of high level, and can not select the ExpressCard interface of powering.Afterwards, as long as second interface control signal is a low level, then no matter whether the ExpressCard interface powers, and ENA exports high level, and interface selects module 303 to select USB interface.
The technical scheme of present embodiment, the first Sheffer stroke gate 302-1, first interface control signal, second interface control signal, USB interface power supply signal, ExpressCard interface power supply signal are calculated with door 302-3 and the second Sheffer stroke gate 302-2, select module output enable signal to interface, interface selects module to select corresponding interface according to the enable signal that receives.Circuit selects corresponding interface to replace button to select corresponding interface, has effectively alleviated the user and has operated burden, and is user-friendly, and need not make the user worry the problem that button damages.And ExpressCard interface control signal and ExpressCard interface power supply signal can shield the ExpressCard interface according to the control of main frame by carrying out with door 302-3 and calculating.
Embodiment four:
Please refer to Fig. 4, Fig. 4 is the double nip memory circuit figure (the ExpressCard interface has only marked the main line of selecting module with interface) of the embodiment of the invention four preferred ExpressCard interface under the situation that two interfaces are all powered, and this double nip memory device can comprise:
The first Sheffer stroke gate 402-1 is used for the interface control signal of ExpressCard interface power supply signal and control module 401 outputs is carried out and non-calculating, and output signal;
The second Sheffer stroke gate 402-2 is used for output signal and the USB interface power supply signal of the first Sheffer stroke gate 402-1 are carried out and non-calculating, and output ENA;
Interface is selected module 403, is used for selecting corresponding interface according to the ENA of second Sheffer stroke gate 402-2 output; ENA is a high level, and interface selects module 403 to select the ExpressCard interface, and ENA is a low level, and interface selects module 403 to select USB interface.
Wherein, the circuit of the first Sheffer stroke gate 402-1 and second Sheffer stroke gate 402-2 composition can be a kind of specific implementation of the interface enable circuit 102 among the embodiment one.
Interface its interface power supply signal when power supply is a high level, and its interface power supply signal was not a low level when interface was powered.The interface control signal of control module 401 outputs is the ExpressCard interface control signal; When memory device adopted the USB interface power supply, the ExpressCard interface control signal was defaulted as high level, and this moment, then the ExpressCard interface control signal kept high level if the ExpressCard interface inserts main frame; When having deleted the ExpressCard interface of memory device in the main frame, the ExpressCard interface control signal becomes low level, when memory device next time inserted main frame or ExpressCard interface again and inserts main frame again, the ExpressCard interface control signal reset to high level.
In the circuit diagram shown in Figure 4, ExpressCard interface control signal and ExpressCard interface power supply signal are undertaken and non-calculating by the first Sheffer stroke gate 402-1, export a signal, the output signal of the first Sheffer stroke gate 402-1 and USB interface power supply signal are undertaken and non-calculating by the second Sheffer stroke gate 402-2, output ENA.The double nip memory device of present embodiment can guarantee under the situation that USB interface and ExpressCard interface are all powered like this, the preferred ExpressCard interface of double nip memory device.Present embodiment can be with reference to following process:
(1) when the power supply of ExpressCard interface, when USB interface is not powered, the ExpressCard interface control signal of high level and ExpressCard interface power supply signal are by the first Sheffer stroke gate 402-1, output signal is a low level, the output signal of the first Sheffer stroke gate 402-1 and USB interface power supply signal are by the second Sheffer stroke gate 402-2, the ENA of output is a high level, and interface is selected the ENA selection ExpressCard interface of module 403 according to high level;
(2) do not power when the ExpressCard interface, during the USB interface power supply, the ExpressCard interface control signal of high level and ExpressCard interface power supply signal are by the first Sheffer stroke gate 402-1, output signal is a high level, the output signal of the first Sheffer stroke gate 402-1 and USB interface power supply signal are by the second Sheffer stroke gate 403-2, the ENA of output is a low level, and interface selects module 403 to select USB interface according to low level ENA;
(3) when ExpressCard interface and USB interface are all powered, the ExpressCard interface control signal of high level and ExpressCard interface power supply signal are by the first Sheffer stroke gate 402-1, output signal is a low level, the output signal of the first Sheffer stroke gate 402-1 and USB interface power supply signal are by the second Sheffer stroke gate 402-2, the ENA of output is a high level, and interface is selected the ENA selection ExpressCard interface of module 403 according to high level;
(4) when ExpressCard interface and USB interface are all powered, if main frame has been deleted ExpressCard equipment, the ExpressCard interface control signal of control module 401 outputs becomes low level, then interface control signal and ExpressCard interface power supply signal are by the first Sheffer stroke gate 402-1, output signal is a high level, the output signal of the first Sheffer stroke gate 402-1 and USB interface power supply signal are by the second Sheffer stroke gate 403-2, the ENA of output is a low level, and interface selects module 403 to select USB interface according to low level ENA.
The technical scheme of present embodiment, the first Sheffer stroke gate 402-1 and the second Sheffer stroke gate 402-2 calculate ExpressCard interface control signal, USB interface power supply signal, ExpressCard interface power supply signal, select module output enable signal to interface, interface selects module to select corresponding interface according to the enable signal that receives.Circuit selects corresponding interface to replace button to select corresponding interface, has effectively alleviated the user and has operated burden, and is user-friendly, and need not make the user worry the problem that button damages.And, ExpressCard interface control signal and ExpressCard interface power supply signal are undertaken and non-calculating by the first Sheffer stroke gate 402-1, guarantee under the situation that USB interface and ExpressCard interface are all powered the preferred ExpressCard interface of double nip memory device.
Embodiment five:
Please refer to Fig. 5, Fig. 5 is the double nip memory circuit figure (the ExpressCard interface has only marked the main line of selecting module with interface) of the embodiment of the invention five preferred ExpressCard interface under the situation that two interfaces are all powered, and this double nip memory device can comprise:
The first Sheffer stroke gate 502-1 is used for first interface control signal and the ExpressCard interface power supply signal of control module 501 outputs are carried out and non-calculating, exports the 3rd signal;
With door 502-3, be used for second interface control signal and the USB interface power supply signal of control module 501 outputs are carried out and calculating, export the 4th signal;
The second Sheffer stroke gate 502-2 is used for the 3rd signal of first Sheffer stroke gate 502-1 output and the 4th signal with door 502-3 output are carried out and non-calculating output ENA;
Interface is selected module 503, is used for selecting corresponding interface according to the ENA of second Sheffer stroke gate 502-2 output; ENA is a high level, and interface selects module 503 to select the ExpressCard interface, and ENA is a low level, and interface selects module 503 to select USB interface.
Wherein, the first Sheffer stroke gate 502-1, the circuit formed with door 502-3 and the second Sheffer stroke gate 502-2 can be a kind of specific implementations of the interface enable circuit 102 among the embodiment one.
First interface control signal is the ExpressCard interface control signal, is defaulted as high level; Second interface control signal is the USB interface control signal, is defaulted as high level, and when needs shielding USB interface, then second interface control signal becomes low level.Second interface control signal becomes low level, because the USB interface of having deleted memory device in the main frame, perhaps, main frame sends the USB interface mask off command to memory device.
In the circuit shown in Figure 5, low level second interface control signal of control module 501 outputs can be realized the shielding to USB interface.No matter whether USB interface powers, and can not select USB interface, to realize the shielding to USB interface.
For example, when the USB interface power supply, when the ExpressCard interface was not powered, low level first interface control signal and the ExpressCard interface power supply signal of control module 501 outputs were undertaken and non-calculating by the first Sheffer stroke gate 502-1, the signal of a high level of output.According to the control of main frame, second interface control signal of control module 501 output low levels and USB interface power supply signal are exported a low level signal by carrying out with door 502-3 and calculating.The output signal of the first Sheffer stroke gate 502-1 with undertaken and non-calculating by the second Sheffer stroke gate 502-2 with the output signal of door 502-3, output high level ENA.Interface selects module 503 to select the not ExpressCard interface of power supply according to the ENA of high level, and can not select the USB interface of powering.Afterwards, as long as second interface control signal is a low level, then no matter whether USB interface powers, and ENA exports high level, and interface selects module 303 to select the ExpressCard interface.
The technical scheme of present embodiment, the first Sheffer stroke gate 502-1, first interface control signal, the second interface control signal USB interface power supply signal, ExpressCard interface power supply signal are calculated with door 502-3 and the second Sheffer stroke gate 502-2, select module output enable signal to interface, interface selects module to select corresponding interface according to the enable signal that receives.Circuit selects corresponding interface to replace button to select corresponding interface, has effectively alleviated the user and has operated burden, and is user-friendly, and need not make the user worry the problem that button damages.And USB interface control signal and USB interface power supply signal can shield USB interface according to the control of main frame by carrying out with door 502-3 and calculating.
Embodiment six:
Please refer to Fig. 6, Fig. 6 is the double nip memory circuit figure (the ExpressCard interface has only marked the main line of selecting module with interface) of the embodiment of the invention six preferred ExpressCard interface under the situation that two interfaces are all powered, and this double nip memory device can comprise:
Control module 601 is used for the Output Interface Control signal;
First with a door 602-1, be used for the interface control signal of USB interface power supply signal and control module 601 outputs is carried out and calculating, and output signal;
Phase inverter 602-2 is used for ExpressCard interface power supply signal is carried out anti-phase calculating, and output signal;
Second with a door 602-3, be used for carrying out with the output signal of output signal and the phase inverter 602-2 of door 602-1 and calculating first, export ENA;
Interface is selected module 603, is used for selecting corresponding interface according to second with an ENA of 602-3 output; ENA is a low level, selects the ExpressCard interface, and ENA is a high level, selects USB interface.
Wherein, first with door 602-1, phase inverter 602-2 and second with the circuit of door 602-3 composition can be a kind of specific implementation of the interface enable circuit 102 among the embodiment one.
Interface its interface power supply signal when power supply is a high level, and its interface power supply signal was not a low level when interface was powered.The interface control signal of control module 601 outputs is the USB interface control signal; When memory device adopted the power supply of ExpressCard interface, the USB interface control signal was defaulted as high level, and this moment, then the USB interface control signal kept high level if USB interface is inserted main frame; When having deleted the USB interface of memory device in the main frame, the USB interface control signal becomes low level, and when memory device next time inserted main frame or USB interface again and inserts main frame again, the USB interface control signal reset to high level.
Present embodiment can be with reference to following process:
(1) when ExpressCard interface power supply, when USB interface is not powered, the USB interface control signal of high level and USB interface power supply signal by first with a 602-1, output signal is a low level.The ExpressCard interface power supply signal of high level is a low level through the signal of phase inverter 602-2 output.First carries out and calculating, the ENA of output low level with a door 602-3 through second with the low level signal of the door 602-1 output low level signal with phase inverter 602-2 output.Interface selects module 603 to select the ExpressCard interface according to low level ENA;
(2) do not power when the ExpressCard interface, during the USB interface power supply, the USB interface control signal of high level and USB interface power supply signal by first with a 602-1, output signal is a high level.Low level ExpressCard interface power supply signal is a high level through the signal of phase inverter 602-2 output.First carries out with a door 602-3 through second with the signal of the signal of the high level of door 602-1 output and the high level of phase inverter 602-2 output and calculates, and exports the ENA of high level.Interface is selected the ENA selection USB interface of module 603 according to high level;
(3) when ExpressCard interface and USB interface are all powered, the USB interface control signal of high level and USB interface power supply signal by first with a door 602-1, output signal is a high level.The ExpressCard interface power supply signal of high level is a low level through the signal of phase inverter 602-2 output.First carries out and calculating, the ENA of output low level with a door 602-3 through second with the signal of the high level of the door 602-1 output low level signal with phase inverter 602-2 output.Interface selects module 603 to select the ExpressCard interface according to low level ENA;
(4) when ExpressCard interface and USB interface are all powered, if main frame has been deleted USB device, the USB interface control signal of control module 601 output becomes low level, then USB interface control signal and USB interface power supply signal by first with a 602-1, output signal is a low level.The ExpressCard interface power supply signal of high level is a low level through the signal of phase inverter 602-2 output.First carries out and calculating, the ENA of output low level with a door 602-3 through second with the low level signal of the door 602-1 output low level signal with phase inverter 602-2 output.Interface selects module 603 to select the ExpressCard interface according to low level ENA.
The technical scheme of present embodiment, first calculates USB interface control signal, USB interface power supply signal, ExpressCard interface power supply signal with 602-3 with door 602-1, phase inverter 602-2 and second, select module output enable signal to interface, interface selects module to select corresponding interface according to the enable signal that receives.Circuit selects corresponding interface to replace button to select corresponding interface, has effectively alleviated the user and has operated burden, and is user-friendly, and need not make the user worry the problem that button damages.And the technical scheme of present embodiment can guarantee under the situation that USB interface and ExpressCard interface are all powered, the preferred ExpressCard interface of double nip memory device.
Embodiment seven:
Please refer to Fig. 7, Fig. 7 is the double nip memory circuit figure (the ExpressCard interface has only marked the main line of selecting module with interface) of the embodiment of the invention seven preferred USB interface under the situation that two interfaces are all powered, and this double nip memory device can comprise:
First with a door 702-1, be used for the interface control signal of ExpressCard interface power supply signal and control module 701 outputs is carried out and calculating, and output signal;
Phase inverter 702-2 is used for the USB interface power supply signal is carried out anti-phase calculating, and output signal;
Second with a door 702-3, be used for carrying out with the output signal of output signal and the phase inverter 702-2 of door 702-1 and calculating first, export ENA;
Interface is selected module 703, is used for selecting corresponding interface according to second with an ENA of 702-3 output; ENA is a low level, selects USB interface, and ENA is a high level, selects the ExpressCard interface.
Wherein, first with door 702-1, phase inverter 702-2 and second with the circuit of door 702-3 composition can be a kind of specific implementation of the interface enable circuit 102 among the embodiment one.
Interface its interface power supply signal when power supply is a high level, and its interface power supply signal was not a low level when interface was powered.The interface control signal of control module 701 outputs is the ExpressCard interface control signal; When memory device adopted the USB interface power supply, the ExpressCard interface control signal was defaulted as high level, and this moment, then the ExpressCard interface control signal kept high level if the ExpressCard interface inserts main frame; When having deleted the ExpressCard interface of memory device in the main frame, the ExpressCard interface control signal becomes low level, when memory device next time inserted main frame or ExpressCard interface again and inserts main frame again, the ExpressCard interface control signal reset to high level.
Present embodiment can be with reference to following process:
(1) when ExpressCard interface power supply, when USB interface is not powered, the ExpressCard interface control signal of high level and ExpressCard interface power supply signal by first with a 702-1, output signal is a high level.Low level USB interface power supply signal is a high level through the signal of phase inverter 702-2 output.First carries out with a door 602-3 through second with the signal of the signal of the high level of door 702-1 output and the high level of phase inverter 702-2 output and calculates, and exports the ENA of high level.Interface is selected the ENA selection ExpressCard interface of module 703 according to high level;
(2) do not power when the ExpressCard interface, during the USB interface power supply, the ExpressCard interface control signal of high level and ExpressCard interface power supply signal by first with a 702-1, output signal is a low level.The USB interface power supply signal of high level is a low level through the signal of phase inverter 702-2 output.First carries out and calculating, the ENA of output low level with a door 602-3 through second with the low level signal of the door 702-1 output low level signal with phase inverter 702-2 output.Interface selects module 703 to select USB interface according to low level ENA;
(3) when ExpressCard interface and USB interface are all powered, the ExpressCard interface control signal of high level and ExpressCard interface power supply signal by first with a door 702-1, output signal is a high level.The USB interface power supply signal of high level is a low level through the signal of phase inverter 702-2 output.First carries out and calculating, the ENA of output low level with a door 602-3 through second with the signal of the high level of the door 702-1 output low level signal with phase inverter 702-2 output.Interface selects module 703 to select USB interface according to low level ENA;
(4) when ExpressCard interface and USB interface are all powered, if main frame has been deleted ExpressCard equipment, the ExpressCard interface control signal of control module 701 outputs becomes low level, then interface control signal and ExpressCard interface power supply signal by first with the door 702-1, output signal is a low level.The USB interface power supply signal of high level is a low level through the signal of phase inverter 702-2 output.First carries out and calculating, the ENA of output low level with a door 702-3 through second with the low level signal of the door 702-1 output low level signal with phase inverter 702-2 output.Interface selects module 703 to select USB interface according to low level ENA.
The technical scheme of present embodiment, first calculates ExpressCard interface control signal, USB interface power supply signal, ExpressCard interface power supply signal with 702-3 with door 702-1, phase inverter 702-2 and second, select module output enable signal to interface, interface selects module to select corresponding interface according to the enable signal that receives.Circuit selects corresponding interface to replace button to select corresponding interface, has effectively alleviated the user and has operated burden, and is user-friendly, and need not make the user worry the problem that button damages.And the technical scheme of present embodiment can guarantee under the situation that USB interface and ExpressCard interface are all powered, the preferred USB interface of double nip memory device.
Embodiment eight:
Please refer to Fig. 8, the method for the embodiment of the invention eight control store equipment interfaces may further comprise the steps:
Step 801: the interface enable circuit receives the interface control signal from control module;
Step 802: described interface enable circuit calculates interface control signal and the first interface power supply signal and the second interface power supply signal, and output ENA;
Step 803: interface selects module to select corresponding interface according to described ENA.
Preferably, the interface enable circuit can comprise first Sheffer stroke gate and second Sheffer stroke gate, to realize preferred to first interface.The interface control signal and the first interface power supply signal are undertaken exporting first signal with non-calculating by first Sheffer stroke gate, this first signal and the second interface power supply signal are undertaken and non-calculating by second Sheffer stroke gate, output ENA, interface select module to select corresponding interface according to ENA.
Preferably, the interface enable circuit can comprise first with door, phase inverter and second with door, with realize to first interface preferably.The interface control signal and the first interface power supply signal carry out and calculating output secondary signal with door by first; The second interface power supply signal carries out anti-phase calculating by phase inverter and exports the 3rd signal; This secondary signal and the 3rd signal carry out and calculating with door by second, and output ENA, interface select module to select corresponding interface according to ENA.
Preferably, the interface enable circuit can comprise first Sheffer stroke gate, second Sheffer stroke gate and with door, to realize shielding to one of them interface.Control module is exported first interface control signal and second interface control signal.First interface control signal and the first interface power supply signal are undertaken exporting the 4th signal with non-calculating by first Sheffer stroke gate; Second interface control signal and the second interface power supply signal are by carrying out with door and calculating output the 5th signal; The 4th signal and the 5th signal are undertaken and non-calculating by second Sheffer stroke gate, and output ENA, interface select module to select corresponding interface according to ENA.
Wherein, first interface can be USB interface, ExpressCard interface; Second interface can be USB interface, ExpressCard interface.
As can be seen, calculate by docking port control signal, the first interface power supply signal, the second interface power supply signal, the output enable signal, and according to enable signal selection corresponding interface.Circuit selects corresponding interface to replace button to select corresponding interface, has effectively alleviated the user and has operated burden, and is user-friendly, and need not make the user worry the problem that button damages.
Embodiment nine:
Please refer to Fig. 9, Fig. 9 is the system construction drawing of the embodiment of the invention nine control store equipment interfaces, and this system comprises:
Memory device 901, described memory device comprise first interface and second interface; Described memory device is used for the order according to main frame 902, the Output Interface Control signal; Described interface control signal, the first interface power supply signal and the second interface power supply signal are calculated the output enable signal; Select corresponding interface according to described enable signal.
Described main frame 902 is used for to deletion of memory device 901 transmission interfaces or mask off command; Power to memory device 901 by first interface or second interface.
Wherein, the specific implementation of memory device 901 can be with reference to aforementioned each embodiment.
As can be seen, calculate by docking port control signal, the first interface power supply signal, the second interface power supply signal, the output enable signal, and according to enable signal selection corresponding interface.Circuit selects corresponding interface to replace button to select corresponding interface, has effectively alleviated the user and has operated burden, and is user-friendly, and need not make the user worry the problem that button damages.
Need to prove, in each embodiment of the present invention, only be to have enumerated part embodiment the present invention will be described, those skilled in the art can carry out various distortion according to embodiments of the invention, for example, carry out abbreviation or the multi-form logical circuit of distortion generation according to logical expression.The distortion circuit of these logical expressions is all within embodiment of the invention scope of disclosure, also all within protection scope of the present invention.
At last, also need to prove, in this article, relational terms such as first and second grades only is used for an entity or operation are made a distinction with another entity or operation, and not necessarily requires or hint and have the relation of any this reality or in proper order between these entities or the operation.And, term " comprises ", " comprising " or its any other variant are intended to contain comprising of nonexcludability, thereby make and comprise that process, method, article or the equipment of a series of key elements not only comprise those key elements, but also comprise other key elements of clearly not listing, or also be included as this process, method, article or equipment intrinsic key element.Do not having under the situation of more restrictions, the key element that limits by statement " comprising ... ", and be not precluded within process, method, article or the equipment that comprises described key element and also have other identical element.
Through the above description of the embodiments, those skilled in the art can be well understood to the present invention and can realize by the mode that software adds essential hardware platform, can certainly all implement, but the former is better embodiment under a lot of situation by hardware.Based on such understanding, all or part of can the embodying that technical scheme of the present invention contributes to background technology with the form of software product, this computer software product can be stored in the storage medium, as ROM/RAM, magnetic disc, CD etc., comprise that some instructions are with so that a computer equipment (can be a personal computer, server, the perhaps network equipment etc.) carry out the described method of some part of each embodiment of the present invention or embodiment.
More than method, the system of memory device provided by the present invention and control interface is described in detail, used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. a memory device is characterized in that, described memory device comprises:
Control module is used for the Output Interface Control signal;
The interface enable circuit is used for described interface control signal, the first interface power supply signal and the second interface power supply signal of described control module output are calculated the output enable signal;
Interface is selected module, is used for selecting corresponding interface according to the described enable signal of described interface enable circuit output.
2. memory device according to claim 1 is characterized in that described interface control signal comprises first interface control signal, and described interface enable circuit comprises:
First Sheffer stroke gate is used for described first interface control signal and the described first interface power supply signal are carried out and non-calculating, and output signal;
Second Sheffer stroke gate is used for the signal and the described second interface power supply signal of described first Sheffer stroke gate output are carried out and non-calculating, exports described enable signal.
3. memory device according to claim 1 is characterized in that described interface control signal comprises first interface control signal, and described interface enable circuit comprises:
First with door, be used for described first interface control signal and the described first interface power supply signal are carried out and calculate, and output signal;
Phase inverter is used for the described second interface power supply signal is carried out anti-phase calculating, and output signal;
Second with door, be used for carrying out with the signal of the signal of door output and the output of described phase inverter and calculating described first, export described enable signal.
4. memory device according to claim 1 is characterized in that, described interface control signal comprises first interface control signal and second interface control signal, and described interface enable circuit comprises:
First Sheffer stroke gate is used for described first interface control signal and the described first interface power supply signal of described control module output are carried out and non-calculating, and output signal;
With door, be used for described second interface control signal and the described second interface power supply signal of described control module output are carried out and calculating, and output signal;
Second Sheffer stroke gate is used for the signal and the signal described and door output of described first Sheffer stroke gate output are carried out and non-calculating, exports described enable signal.
5. the method for a control store equipment interface is characterized in that, described method comprises:
Reception is from the interface control signal of control module;
Adopt the described interface control signal and the first interface power supply signal and the second interface power supply signal to calculate the output enable signal;
Select corresponding interface according to described enable signal.
6. method according to claim 5 is characterized in that, the described interface control signal of described employing and the first interface power supply signal and the second interface power supply signal calculate, and the output enable signal comprises:
First interface control signal and the described first interface power supply signal to described control module output carry out and non-calculating, and export first signal;
Described first signal and the described second interface power supply signal are carried out and non-calculating, export described enable signal.
7. method according to claim 5 is characterized in that, the described interface control signal of described employing and the first interface power supply signal and the second interface power supply signal calculate, and the output enable signal comprises:
First interface control signal and the described first interface power supply signal to described control module output carry out and calculating, and the output secondary signal; The described second interface power supply signal is carried out anti-phase, and export the 3rd signal;
Described secondary signal and described the 3rd signal are carried out and calculating, export described enable signal.
8. method according to claim 5 is characterized in that, the described interface control signal of described employing and the first interface power supply signal and the second interface power supply signal calculate, and the output enable signal comprises:
First interface control signal and the described first interface power supply signal to described control module output carry out and non-calculating, and export the 4th signal;
Second interface control signal and the described second interface power supply signal to described control module output carry out and calculating, and export the 5th signal;
Described the 4th signal and described the 5th signal are carried out and non-calculating, export described enable signal.
9. the system of a control store equipment interface is characterized in that, described system comprises:
Memory device, described memory device comprise first interface and second interface;
Described memory device is used for the order according to main frame, the Output Interface Control signal; Described interface control signal, the first interface power supply signal and the second interface power supply signal are calculated the output enable signal; Select corresponding interface according to described enable signal;
Described memory device comprises:
Control module is used for the Output Interface Control signal;
The interface enable circuit is used for described interface control signal, the first interface power supply signal and the second interface power supply signal of described control module output are calculated the output enable signal;
Interface is selected module, is used for selecting corresponding interface according to the described enable signal of described interface enable circuit output.
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| CN101997627A (en) * | 2010-11-16 | 2011-03-30 | 中兴通讯股份有限公司 | Apparatus and method for switching interface |
| CN103714845A (en) * | 2012-10-09 | 2014-04-09 | 昆达电脑科技(昆山)有限公司 | Electronic device provided with two USB interfaces |
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| EP1372081B1 (en) * | 2002-06-14 | 2007-04-11 | Samsung Electronics Co., Ltd. | Interface device for peripherals and priority control method therefor |
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