CN102479110B - Electronic equipment and power supply control method - Google Patents
Electronic equipment and power supply control method Download PDFInfo
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- CN102479110B CN102479110B CN201010560266.3A CN201010560266A CN102479110B CN 102479110 B CN102479110 B CN 102479110B CN 201010560266 A CN201010560266 A CN 201010560266A CN 102479110 B CN102479110 B CN 102479110B
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- 238000000034 method Methods 0.000 title claims abstract description 17
- 238000012790 confirmation Methods 0.000 claims abstract description 52
- 238000013475 authorization Methods 0.000 claims description 67
- 238000012360 testing method Methods 0.000 claims description 12
- 238000001514 detection method Methods 0.000 claims description 10
- 238000012545 processing Methods 0.000 description 6
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003032 molecular docking Methods 0.000 description 2
- 238000010200 validation analysis Methods 0.000 description 2
- 208000033999 Device damage Diseases 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
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Abstract
The invention provides electronic equipment and a power supply control method. The electronic equipment comprises a first data interface, a detecting module, a verifying module, a first judging module and a power supply module, wherein the first data interface is used for being connected with external equipment and comprises a plurality of contacts including a power supply contact and at least one verifying contact; the detecting module is used for detecting whether the external equipment is connected with the first data interface and obtaining a detecting result; the verifying module is used for transmitting verifying information to the external equipment through at least one contact in the verifying contacts when the detecting result shows that the external equipment is connected with the first data interface; the first judging module is used for judging whether confirmation information of the verifying information, which is transmitted by the external equipment, is received through at least one contact in the verifying contacts and obtaining a judging result; and the power supply module is used for supplying power to the external equipment through the power supply contact when the judging result shows that the confirmation information is received through at least one contact in the verifying contacts. According to the invention, short circuit caused by poor contact of contacts of the data interface can be avoided.
Description
Technical field
The present invention relates to terminal technology field, relate in particular to a kind of electronic equipment and method for controlling power supply.
Background technology
The USB of standard (Universal Serial BUS, USB (universal serial bus)) main frame (host) is that USB socket by standard is connected with USB device (device), usb host can be the equipment such as PC, mobile phone, and USB device can be the equipment such as mouse, keyboard, docking station.When usb host is connected with USB device, can be that USB device is powered by USB socket.In the USB socket of standard, conventionally there is following contact: VBUS (power supply) contact, GND (ground connection) contact, D+ (data) contact, D-(data) contact and ID (sign) contact.When the voltage that the ID contact in USB socket detected when usb host is dragged down, giving tacit consent to currently has USB device to be connected with it, and now, usb host can be powered to USB device by VBUS contact.
Socket on usb host may be also non-standard structure, the socket of non-standard structure is except having above-mentioned several contact, also there is other function contacts, for example, on the socket of mobile phone, also may there is the contacts such as speaker line-in/out (audio frequency I/O).When if the plug of USB device inserts described socket, contact on plug and the contact position of the contact on socket are improper, for example, ID contact on socket is connected with GND contact, and VBUS contact is connected with speaker line-in/out contact, now, the voltage of ID contact will be dragged down, usb host can be powered to speaker line-in/out contact by VBUS contact, in this kind of situation, can cause short circuit, even can cause device damage.
Summary of the invention
In view of this, the invention provides a kind of electronic equipment and method for controlling power supply, can effectively avoid the position of the contact of factor data interface to contact short circuit improper and that cause.
For addressing the above problem, the invention provides a kind of electronic equipment, comprising:
The first data-interface, for being connected with external unit, described the first data-interface comprises a plurality of contacts, described a plurality of contacts comprise power contact and at least one checking contact;
Whether detection module, for detection of having external unit to be connected with described the first data-interface, and obtain a testing result;
Authentication module, when indicating that when described testing result external unit is connected with described the first data-interface, sends an authorization information by least one contact in described checking contact to described external unit;
The first judge module, receives by least one contact of described checking contact the confirmation to described authorization information that described external unit sends for judging whether, and obtains a judged result;
Supply module, when representing that when described judged result at least one contact by described checking contact receives described confirmation, powers to described external unit by described power contact.
Preferably, for sending the checking contact of described authorization information and being identical or different contact for receiving the checking contact of described confirmation.
Preferably, when described checking contact is a plurality of, described a plurality of checkings contact is arranged at respectively the both sides of other contacts on described the first data-interface.
Preferably, in described a plurality of contacts, also comprise ID contact, whether whether described detection module is dragged down by detecting the voltage of described ID contact, detect and have external unit to be connected with described the first data-interface.
The present invention also provides a kind of electronic equipment, comprising:
The second data-interface, for being connected with main frame, described the second data-interface comprises a plurality of contacts, described a plurality of contacts comprise at least one checking contact;
The second judge module, receives by least one contact of described checking contact the authorization information that described main frame sends for judging whether, and obtains a judged result;
Feedback module, when representing that when described judged result at least one contact by described checking contact receives described authorization information, sends a confirmation by least one contact in described checking contact to described main frame.
Preferably, for receiving the checking contact of described authorization information and being identical or different contact for sending the checking contact of described confirmation.
Preferably, when described checking contact is a plurality of, described a plurality of checkings contact is arranged at respectively the both sides of other contacts on described the second data-interface.
The present invention also provides a kind of method for controlling power supply, is applied on an electronic equipment, and described electronic equipment comprises first data-interface for being connected with external unit; Said method comprising the steps of:
Detect and whether have external unit to be connected with described the first data-interface, and obtain a testing result; Described the first data-interface comprises a plurality of contacts, and described a plurality of contacts comprise power contact and at least one checking contact;
When described testing result indicates that external unit is connected with described the first data-interface, by least one contact in described checking contact, to described external unit, send an authorization information;
Judge whether to receive by least one contact in described checking contact the confirmation to described authorization information that described external unit sends, and obtain a judged result;
When described judged result represents to receive described confirmation by least one contact in described checking contact, by described power contact, to described external unit, power.
Preferably, for sending the checking contact of described authorization information and being identical or different contact for receiving the checking contact of described confirmation.
Preferably, when described checking contact is a plurality of, described a plurality of checkings contact is arranged at respectively the both sides of other contacts on described the first data-interface.
The present invention has following beneficial effect:
When external unit being detected and be connected with the data-interface of main frame, immediately external unit is not powered, but whether the position of first detecting the contact of data-interface contacts correctly, when the position of the contact of data-interface being detected, contact when correct, by the power supply contact on data-interface, external unit is powered again, thereby can effectively avoid the position of the contact of factor data interface to contact short circuit improper and that cause.
Accompanying drawing explanation
Fig. 1 is the structured flowchart of the electronic equipment of the embodiment of the present invention;
Fig. 2 is the structural representation of the first data-interface of the embodiment of the present invention;
Fig. 3 is another structured flowchart of the electronic equipment of the embodiment of the present invention;
Fig. 4 is the structural representation of the second data-interface of the embodiment of the present invention;
Fig. 5 is the usb host of the embodiment of the present invention and the structural representation of USB device;
Fig. 6 is the schematic flow sheet of the method for controlling power supply of the embodiment of the present invention.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
Be illustrated in figure 1 the structured flowchart of the electronic equipment of the embodiment of the present invention, described electronic equipment can be the equipment such as computing machine, mobile phone, and described electronic equipment can be commonly referred to main frame for connected external unit power supply, and described electronic equipment comprises:
The first data-interface 101, for being connected with external unit, described external unit is the equipment of Receiving Host power supply, is commonly referred to from equipment, described external unit has the second data-interface, by described the second data-interface, is connected with described the first data-interface 101.Described the first data-interface 101 and described the second data-interface are same kind and the data-interface that cooperatively interacts, and for example, described the first data-interface 101 can be a socket, and described the second data-interface is a plug.Be illustrated in figure 2 the structural representation of the first data-interface 101 of the embodiment of the present invention, described the first data-interface 101 comprises a plurality of contacts 1011, described a plurality of contact 1011 comprises power contact and at least one checking contact, wherein, described power contact is used to external unit power supply, and described checking contact is for verifying whether contact on described the first data-interface 101 is correct with contacting of contact on external unit.In order to carry out signal transmission, each contact 1011 on described the first data-interface 101 all should have a ground wire, wherein, verifies that contact can be used separately a ground wire described in each, also can share a ground wire with described power contact.In addition, generally in the described a plurality of contacts 1011 on described the first data-interface 101, also can comprise earthing contact and data contact, described earthing contact is for ground connection, described data contact for and external unit between transmit data.
Whether detection module 102, for detection of having external unit to be connected with described the first data-interface 101, and obtain a testing result.Described the first data-interface 101 can be polytype data-interface, and for dissimilar data-interface, whether described detection module 102 detects has external unit also not identical with the method that described the first data-interface 101 connects.For example, when a plurality of contacts 1011 of described the first data-interface 101 comprise ID contact, whether whether described detection module 102 can be dragged down by detecting the voltage of described ID contact, detect and have external unit to be connected with described the first data-interface 101.
The first judge module 104, receives by least one contact of described checking contact the confirmation to described authorization information that described external unit sends for judging whether, and obtains a judged result.If the contact on described the first data-interface 101 contacts correctly with the position of the contact on external unit, external unit can receive the authorization information that described electronic equipment sends.Described external unit can directly be stored the confirmation of described authorization information, when described external unit receives after described authorization information, directly by storage inside really letter information send to described electronic equipment.In addition, described external unit also can not stored the confirmation of described authorization information, but comprise a processing module, after receiving described authorization information, by described processing module, described authorization information is processed, obtain the confirmation of described authorization information, and described confirmation is sent to described electronic equipment.Same, described electronic equipment also can directly be stored the confirmation of described authorization information, when receive external unit to the feedback information of described authorization information after, described the first judge module 104 compares the confirmation of described feedback information and storage inside, if described feedback information is consistent with the confirmation of described electronic equipment storage, thinks and received the confirmation of the described authorization information that described external unit sends.In addition, described electronic equipment also can comprise a processing module, when receive described external unit to the feedback information of described authorization information after, described feedback information is processed, and the confirmation of the result that processing is obtained and storage inside compares, if it is consistent with the confirmation of storage inside to process the result obtain, think the confirmation of described authorization information of the external unit transmission that received.Or be, described electronic equipment also can not stored the confirmation of described authorization information, but the authorization information that self sends is processed, calculate the confirmation of described authorization information, and compare with the feedback information that the external unit receiving sends.If it is improper that the contact on described the first data-interface 101 contacts with the position of the contact on external unit, external unit cannot receive the authorization information that described electronic equipment sends, thereby described electronic equipment also cannot receive the confirmation that external unit sends.When described the first data-interface 101 only comprises a checking contact, described electronic equipment receives by described checking contact the confirmation that external unit sends.When described the first data-interface 101 comprises two checking contacts, for example comprise checking contact 1 and checking contact 2, described electronic equipment can receive the confirmation that external unit sends by checking contact 1 and checking contact 2, or, by a checking contact in checking contact 1 or checking contact 2, receive the confirmation that external unit sends.Checking contact on described the first data-interface 101 is during more than two, and described electronic equipment can receive the confirmation that external unit sends by any one or more checkings contact in those checking contacts.In addition, on described the first data-interface 101, for sending the checking contact of described authorization information and can being identical contact for receiving the checking contact of described confirmation, can be also different contacts.
In above-described embodiment, described the first data-interface 101 generally includes the contact of following several types: power contact, earthing contact, data contact and checking contact, wherein, can be using other contacts except power contact, earthing contact, data contact as checking contact, certainly, also can be using power contact, earthing contact or data contact as checking contact.For example, can be using data contact as checking contact, when external unit having been detected and be connected with described the first data-interface 101, using described data contact first as checking contact, verify whether contact on described the first data-interface 101 is correct with contacting of contact on described external unit, after checking contact is correct, then by transmitting data between described data contact and described external unit.
In above-described embodiment, when the checking contact on described the first data-interface 101 is a plurality of, described a plurality of checkings contact can be arranged at respectively to the both sides of other contacts on described the first data-interface 101, because if be positioned at the checking contact of both sides, all contact correctly, other contacts that are positioned at centre position are also generally that contact is correct.
The electronic equipment providing by above-described embodiment, when external unit being detected and be connected with the data-interface of main frame, immediately external unit is not powered, but whether the position of first detecting the contact of data-interface contacts correctly, when the position of the contact of data-interface being detected, contact when correct, by the power supply contact on data-interface, external unit is powered again, thereby can effectively avoid the position of the contact of factor data interface to contact short circuit improper and that cause.
Corresponding to the above-mentioned electronic equipment as main frame, the embodiment of the present invention also provides the electronic equipment of a kind of conduct from equipment, be illustrated in figure 3 another structured flowchart of the electronic equipment of the embodiment of the present invention, described electronic equipment can be the equipment such as mouse, keyboard, docking station, and described electronic equipment comprises:
The second data-interface 301, for being connected with main frame, after described main frame is connected with described electronic equipment, can be described electronic equipment power supply, and described main frame has the first data-interface, by described the first data-interface, is connected with described the second data-interface 301.Described the first data-interface and described the second data-interface 301 are same kind and the data-interface that cooperatively interacts, and for example, described the first data-interface can be a socket, and 301 of described the second data-interfaces are a plug.Be illustrated in figure 4 the structural representation of the second data-interface 301 of the embodiment of the present invention, described the second data-interface 301 comprises a plurality of contacts 3011, described a plurality of contact 3011 comprises power contact and at least one checking contact, wherein, described power contact is for being connected with the power contact of main frame, the electric current that Receiving Host provides, the authorization information that described checking contact sends for the checking contact on Receiving Host, and the checking contact on main frame sends confirmation.In addition, generally, in a plurality of contacts 3011 on described the second data-interface 301, also can comprise earthing contact and data contact, described earthing contact is for ground connection, described data contact for and main frame between transmit data.
The second judge module 302, receives by least one contact of described checking contact the authorization information that described main frame sends for judging whether, and obtains a judged result.
Above-mentioned the second judge module 302 and described feedback module 303 can be by logical circuit or Rom (Read-Only Memory, read-only memory) realize cheaply.
Match with the checking contact on described main frame in checking contact on described the second data-interface 301, for example, when the checking contact on described main frame is one, checking contact on described the second data-interface 301 is also one, described the second data-interface 301 receives by this checking contact the authorization information that described main frame sends, and to described main frame, send confirmation by described checking contact, in addition, the position of the checking contact on described the second data-interface 301 arranges also and to arrange consistent with the position of checking contact on described main frame.
When the checking contact on described main frame is two, for example verify contact 1 and checking contact 2, if main frame sends authorization information by checking contact 1 and checking contact 2 to described electronic equipment, on described the second data-interface 301, also need to comprise two checking contacts, for example verify contact 3 and checking contact 4, be respectively used to the authorization information that Receipt Validation contact 1 and checking contact 2 send.If main frame sends authorization information by checking contact 1 to described electronic equipment, by checking contact 2, receive the feedback information of electronic equipment to described authorization information, now, the authorization information that described the second data-interface 301 can send by 3 Receipt Validation contacts 1, checking contact, and to checking contact 2, send feedback information by checking contact 4, wherein, described checking contact 1 is corresponding with the position of described checking contact 3, and checking contact 2 is corresponding with the position of checking contact 4.
That is to say, on described the second data-interface 301 for receiving the checking contact of described authorization information and can being same contacts for sending the checking contact of described confirmation, also can be different contacts, match in the checking contact on the main frame corresponding with it.
Described the second data-interface 301 can be polytype data-interface.
In addition, when the checking contact on described the second data-interface 301 is a plurality of, described a plurality of checkings contact can be arranged at respectively to the both sides of other contacts on described the second data-interface 301, because if be positioned at the checking contact of both sides, all contact correctly, other contacts that are positioned at centre position are also generally that contact is correct.
Main frame take below as usb host, is that USB device is example from equipment, and above-described embodiment is described.
Usb host has a socket (corresponding to the first data-interface 101 in above-described embodiment), USB device has a plug (corresponding to the second data-interface 301 in above-described embodiment), as shown in Figure 5, described socket comprises with lower contact: power contact, earthing contact, data contact, ID contact and checking contact 1 and checking contact 2, checking contact 1 and checking contact 2 lay respectively at the both sides of other contacts.Plug comprises with lower contact: power contact, earthing contact, data contact, ID contact and checking contact 3 and checking contact 4, checking contact 3 and checking contact 4 lay respectively at the both sides of other contacts, wherein, checking contact 3 is corresponding with the position of checking contact 1, and checking contact 4 is corresponding with the position of checking contact 2.
In the time of on plug insertion socket, the voltage of the ID contact on socket is dragged down, and now, usb host sends an authorization information by checking contact 1 to USB device, for example, sends one 0/1 sequences.
USB device receives after described authorization information by checking contact 3, and described authorization information is processed, and obtains place's feedback information, and to usb host, sends described feedback information by checking contact 4, and described feedback information can be also one 0/1 sequences.
Usb host receives after described feedback information by checking contact 2, judges whether described feedback information is the confirmation of described authorization information, if so, thinks and is proved to be successful, and by power supply contact, to USB device, powers, otherwise not to described USB device power supply.
The embodiment of the present invention also provides a kind of method for controlling power supply, is applied in an electronic equipment as main frame, and described electronic equipment comprises first data-interface for being connected with external unit; As shown in Figure 6, described method for controlling power supply comprises the following steps:
Whether step 601, detect and have external unit to be connected with described the first data-interface, and obtain a testing result; Described the first data-interface comprises a plurality of contacts, and described a plurality of contacts comprise power contact and at least one checking contact; When described testing result indicates that external unit is connected with described the first data-interface, execution step 602, otherwise finish;
Step 602, sends an authorization information by least one contact in described checking contact to described external unit;
Step 603, judges whether to receive by least one contact in described checking contact the confirmation to described authorization information that described external unit sends, and obtains a judged result; When described judged result represents to receive described confirmation by least one contact in described checking contact, execution step 604, otherwise finish;
Step 604, powers to described external unit by described power contact.
In above-described embodiment, for sending the checking contact of described authorization information and being identical or different contact for receiving the checking contact of described confirmation.
In above-described embodiment, when the checking contact on described the first data-interface is a plurality of, described a plurality of checkings contact can be arranged at respectively to the both sides of other contacts on described the first data-interface, because if be positioned at the checking contact of both sides, all contact correctly, other contacts that are positioned at centre position are also generally that contact is correct.
The method for controlling power supply providing by above-described embodiment, when external unit being detected and be connected with the data-interface of main frame, immediately external unit is not powered, but whether the position of first detecting the contact of data-interface contacts correctly, when the position of the contact of data-interface being detected, contact when correct, by the power supply contact on data-interface, external unit is powered again, thereby can effectively avoid the position of the contact of factor data interface to contact short circuit improper and that cause.
The above is only the preferred embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications also should be considered as protection scope of the present invention.
Claims (10)
1. an electronic equipment, is characterized in that, comprising:
The first data-interface, for being connected with external unit, described the first data-interface comprises a plurality of contacts, described a plurality of contacts comprise power contact and at least one checking contact;
Whether detection module, for detection of having external unit to be connected with described the first data-interface, and obtain a testing result;
Authentication module, when indicating that when described testing result external unit is connected with described the first data-interface, sends an authorization information by least one contact in described checking contact to described external unit;
The first judge module, receives by least one contact of described checking contact the confirmation to described authorization information that described external unit sends for judging whether, and obtains a judged result;
Supply module, when representing that when described judged result at least one contact by described checking contact receives described confirmation, powers to described external unit by described power contact.
2. electronic equipment as claimed in claim 1, is characterized in that, for sending the checking contact of described authorization information and being identical or different contact for receiving the checking contact of described confirmation.
3. electronic equipment as claimed in claim 1, is characterized in that, when described checking contact is a plurality of, described a plurality of checkings contact is arranged at respectively the both sides of other contacts on described the first data-interface.
4. electronic equipment as claimed in claim 1, is characterized in that, in described a plurality of contacts, also comprises ID contact, and whether whether described detection module is dragged down by detecting the voltage of described ID contact, detect and have external unit to be connected with described the first data-interface.
5. an electronic equipment, is characterized in that, comprising:
The second data-interface, for being connected with main frame, described the second data-interface comprises a plurality of contacts, described a plurality of contacts comprise at least one checking contact;
The second judge module, receives by least one contact of described checking contact the authorization information that described main frame sends for judging whether, and obtains a judged result;
Feedback module, when representing that when described judged result at least one contact by described checking contact receives described authorization information, by at least one contact in described checking contact, to described main frame, send the confirmation of described authorization information, so that described main frame can be to described electronic equipment power supply when receiving described confirmation.
6. electronic equipment as claimed in claim 5, is characterized in that, for receiving the checking contact of described authorization information and being identical or different contact for sending the checking contact of described confirmation.
7. electronic equipment as claimed in claim 5, is characterized in that, when described checking contact is a plurality of, described a plurality of checkings contact is arranged at respectively the both sides of other contacts on described the second data-interface.
8. a method for controlling power supply, is applied on an electronic equipment, and described electronic equipment comprises first data-interface for being connected with external unit; It is characterized in that, said method comprising the steps of:
Detect and whether have external unit to be connected with described the first data-interface, and obtain a testing result; Described the first data-interface comprises a plurality of contacts, and described a plurality of contacts comprise power contact and at least one checking contact;
When described testing result indicates that external unit is connected with described the first data-interface, by least one contact in described checking contact, to described external unit, send an authorization information;
Judge whether to receive by least one contact in described checking contact the confirmation to described authorization information that described external unit sends, and obtain a judged result;
When described judged result represents to receive described confirmation by least one contact in described checking contact, by described power contact, to described external unit, power.
9. method for controlling power supply as claimed in claim 8, is characterized in that, for sending the checking contact of described authorization information and being identical or different contact for receiving the checking contact of described confirmation.
10. method for controlling power supply as claimed in claim 8, is characterized in that, when described checking contact is a plurality of, described a plurality of checkings contact is arranged at respectively the both sides of other contacts on described the first data-interface.
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| CN101079550A (en) * | 2006-12-06 | 2007-11-28 | 华为技术有限公司 | Determination system, terminal charging method, terminal and charger of charger style |
| CN101388822A (en) * | 2008-10-24 | 2009-03-18 | 上海华魏自动化设备有限公司 | Automatic pole changing device for CAN bus and method therefor |
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| US7634230B2 (en) * | 2002-11-25 | 2009-12-15 | Fujitsu Limited | Methods and apparatus for secure, portable, wireless and multi-hop data networking |
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| CN101079550A (en) * | 2006-12-06 | 2007-11-28 | 华为技术有限公司 | Determination system, terminal charging method, terminal and charger of charger style |
| CN101388822A (en) * | 2008-10-24 | 2009-03-18 | 上海华魏自动化设备有限公司 | Automatic pole changing device for CAN bus and method therefor |
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