CN104636108A - Electronic equipment - Google Patents
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- CN104636108A CN104636108A CN201510109252.2A CN201510109252A CN104636108A CN 104636108 A CN104636108 A CN 104636108A CN 201510109252 A CN201510109252 A CN 201510109252A CN 104636108 A CN104636108 A CN 104636108A
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Abstract
The invention provides electronic equipment which comprises a first interface module, a connection detection module, an identification module and a processing module, wherein the first interface module is used for being connected with a second interface module of external equipment; the connection detection module is used for detecting whether the first interface module is connected with the second interface module or not; the identification module is used for identifying the type of the second interface module when the connection detection module detects that the first interface module and the second interface module are connected; and the processing module is used for sending multimedia signals to the second interface module via the first interface module when the identification module identifies the second interface module to be a signal input interface, and the processing module does not execute multimedia signal transmit-receive operation when the identification module identifies the second interface module to be a signal output interface. The electronic equipment can avoid the problem the equipment is damaged due to voltage backflow which occurs when two signal output interfaces are connected.
Description
The present invention is the applying date is on March 15th, 2011, and application number is 201110061985.5, and denomination of invention is the divisional application of the invention of " electronic equipment and interface identification method ".
Technical field
The present invention relates to electronic technology field, particularly relate to a kind of electronic equipment.
Background technology
Computing machine have usually video input interface (video input) or video output interface (video output), video input interface is for receiving the vision signal of external equipment input, and video output interface is used for external equipment output video signal.Video input interface and video output interface see it is identical in appearance, therefore user is when being connected computing machine with external equipment, be easy to that video interface can occur and connect anti-situation, video input interface by external equipment inserts in the video input interface of computing machine, or, the video output interface of external equipment is inserted in the video output interface of computing machine.When the video interface of computing machine and external equipment connects inverse time, the transmission of vision signal cannot be carried out.And when two signal output interfaces connect, there will be voltage and pour in down a chimney and the problem that causes device damage.
Summary of the invention
In view of this, the invention provides a kind of electronic equipment, to occur that when two signal output interfaces connect voltage pours in down a chimney and causes the problem of device damage for solving.
For solving the problem,
The invention provides a kind of electronic equipment, comprising: first interface module, for being connected with the second interface module of external equipment; Whether connection detection module, be connected with described second interface module for detecting described first interface module; Identification module, for when detecting that described first interface module is connected with described second interface module, identifies the type of described second interface module; Processing module, for when the type identifying described second interface module is signal input interface, multi-media signal is sent to described second interface module by described first interface module, when the type identifying described second interface module is signal output interface, do not perform the transmitting-receiving operation of multi-media signal.
Preferably, processing module comprises: signal output module, for exporting multi-media signal; Handover module, be arranged between described signal output module and described first interface module, for being switched on or switched off the connection between described signal output module and described first interface module, when described first interface module is not connected with described second interface module, the connection between described signal output module and described first interface module is in off-state; First control module, for when the type identifying described second interface module is signal input interface, controls described handover module and connects connection between described signal output module and described first interface module.
Whether preferably, described electronic equipment also comprises: disconnection detection module, disconnect for the connection detected between described first interface module and described second interface module; Second control module, for when detecting that the connection between described first interface module and described second interface module disconnects, controlling described handover module and disconnecting connection between described signal output module and described first interface module.
Preferably, described electronic equipment also comprises: reminding module, for when the type how described second interface module being detected is signal output interface, and generation error information.
The present invention has following beneficial effect:
1, self-adaptation, according to the interface type of external equipment, can switch the type of its own interfaces adaptively, avoid because interface connects the problem causing vision signal to transmit on the contrary.
Interface default setting is no signal or signal input interface by 2, safety, thus can avoid, because of the different signal output interface connection of two magnitudes of voltage, high voltage being poured in the interface at low-voltage place, thus the problem that the electronic equipment caused damages.
3, save space, signal input interface and signal output interface are merged into an interface, save space.
4, save cost, only need a signaling interface, just can complete the input and output of the multi-media signal between different external connection equipment, save the cost of electronic equipment.
Accompanying drawing explanation
Fig. 1 is a structured flowchart of the electronic equipment of the embodiment of the present invention;
Fig. 2 is another structured flowchart of the electronic equipment of the embodiment of the present invention;
Fig. 3 is the another structured flowchart of the electronic equipment of the embodiment of the present invention;
Fig. 4 is a process flow diagram of the interface identification method of the embodiment of the present invention;
Fig. 5 is another process flow diagram of the interface identification method of the embodiment of the present invention.
Embodiment
The electronic equipment that the embodiment of the present invention provides and interface identification method, can when electronic equipment be connected with external equipment, identify the type of the interface of external equipment, when the interface identifying external equipment is signal input interface, the interface of self is switched to signal output interface, sends multi-media signal, when the interface identifying external equipment is signal output interface to external equipment, the interface of self is switched to signal input interface, receives the multi-media signal that external equipment sends.
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.
The embodiment of the present invention provides a kind of electronic equipment, and described electronic equipment can be the equipment such as computing machine, mobile phone, PDA (personal digital assistant), and as shown in Figure 1, described electronic equipment 100 comprises:
First interface module 101, for being connected with the second interface module 201 of external equipment 200; Described first interface module 101 and described second interface module 201 are two interfaces cooperatively interacted, and such as, one of them is plug, and one is socket, and both have identical pin.
Whether connection detection module 102, is connected with described first interface module 101, be connected for detecting described first interface module 101 with described second interface module 201;
Identification module 103, during for detecting that described first interface module 101 is connected with described second interface module 201 when described connection detection module 102, identifies the type of described second interface module 201;
Processing module 104, for when the type identifying described second interface module 201 is signal input interface, multi-media signal is sent to described second interface module 201 by described first interface module 101, when the type identifying described second interface module 201 is signal output interface, received the multi-media signal of described second interface module 201 transmission by described first interface module 101.
Described first interface module 101 and described second interface module 201 can be the multi-media signal such as video interface, audio interface interfaces.When described first interface module 101 and described second interface module 201 are video interfaces, as DP (Display), DVI (Digital Visual Interface, digital visual interface) or HDMI (High Definition Multimedia Interface, HDMI (High Definition Multimedia Interface)) etc. video interface, described multi-media signal is then vision signal accordingly, as DP signal, DVI signal or HDMI signal etc., when described first interface module 101 and described second interface module 201 are audio interface, described multi-media signal is then sound signal accordingly.
Above-mentioned processing module 104 is for performing the operation of the type switching described first interface module 101, concrete, when the type that described identification module 103 identifies described second interface module 201 is signal input interface, the type of described first interface module 101 is switched to signal output interface by described processing module 104, sends multi-media signal by described first interface module 101 to described second interface module 201; When the type that described identification module 103 identifies described second interface module 201 is signal output interface, the type of described first interface module 101 is set to signal input interface by described processing module 104, is received the multi-media signal of described second interface module 201 transmission by described first interface module 101.
In prior art, when two signal output interfaces connect, if the magnitude of voltage on two signal output interfaces is different, high voltage can be poured on the signal output interface at low-voltage place, thus causes electronic equipment to damage possibly.In order to avoid above-mentioned situation occurs, when described first interface module 101 is not connected with described second interface module 201, described first interface module 101 can be arranged to no signal, namely described first interface module 101 i.e. not Received signal strength, does not also send signal.
As shown in Figure 2, described processing module 104 can comprise signal output module 1041, signal receiving module 1042, handover module 1043 and one first control module 1044, and wherein, described signal output module 1041 is for exporting multi-media signal, described signal receiving module 1042 is for multimedia signal receiving, described handover module 1043 respectively with described signal output module 1041, described signal receiving module 1042 and described first interface module 101 connect, for being switched on or switched off the connection between described signal output module 1041 and described first interface module 101, and the connection be switched on or switched off between described signal receiving module 1042 and described first interface module 101, when described first interface module 101 is not connected with described second interface module 201, connection between described signal output module 1041 and described first interface module 101 and the connection between described signal receiving module 1042 and described first interface module 101 are all in off-state.That is, when described first interface module 101 is not connected with described second interface module 201, namely described first interface module 101 is not signal output interface, neither signal input interface.Described first control module 1044 is for when the type described second interface module 201 being detected is signal input interface, control described handover module 1043 and connect connection between described signal output module 1041 and described first interface module 101, be arranged to signal output interface by described first interface module 101; When the type described second interface module 201 being detected is signal output interface, control described handover module 1043 and connect connection between described signal receiving module 1042 and described first interface module 101, be arranged to signal input interface by described first interface module 101.
Described handover module 1043 can be a single-pole double-throw switch (SPDT), described single-pole double-throw switch (SPDT) comprises not moved end and two moved ends, described not moved end is connected with described first interface module 101, one of them moved end is connected with described signal output module 1041, and another moved end is connected with described signal receiving module 1042.
In addition, when connection between described first interface module 101 and described second interface module 201 disconnects, also need to recover the connection status between described first interface module 101 and described signal output module 1041, and the connection status between described first interface module 101 and described signal receiving module 1042, therefore, whether described electronic equipment can also comprise: disconnection detection module 105, disconnect for the connection detected between described first interface module 101 and described second interface module 201; Second control module 106, for when detecting that the connection between described first interface module 101 and described second interface module 201 disconnects, controlling described handover module 1043 and disconnecting the connection between described signal output module 1041 and described first interface module 101 and the connection between described signal receiving module 1042 and described first interface module 101.
During due to two signal input interfaces connections, the damage of electronic equipment can not be caused, therefore, when described first interface module 101 is not connected with described second interface module 201, can also be signal input interface by described first interface module 101 default setting, that is, when described first interface module 101 is not connected with described second interface module 201, the connection between described first interface module 101 and described signal receiving module 1042 can be connected.
As shown in Figure 3, described processing module 104 can comprise: signal output module 1041, signal receiving module 1042, handover module 1043 and one the 3rd control module 1045, and wherein, described signal output module 1041 is for exporting multi-media signal, described signal receiving module 1042 is for multimedia signal receiving, described handover module 1043 respectively with described signal output module 1041, described signal receiving module 1042 and described first interface module 101 connect, for being switched on or switched off the connection between described signal output module 1041 and described first interface module 101, and the connection be switched on or switched off between described signal receiving module 1042 and described first interface module 101, when described first interface module 101 is not connected with described second interface module 201, connection between described signal output module 1041 and described first interface module 101 is in off-state, connection between described signal receiving module 1042 and described first interface module 101 is in on-state, that is, described first interface module 101 is set to signal input interface.Described 3rd control module 1045 is for when the type described second interface module 201 being detected is signal input interface, control described handover module 1043 and connect connection between described signal output module 1041 and described first interface module 101, disconnect the connection between described signal receiving module 1042 and described first interface module 101.
In addition, when connection between described first interface module 101 and described second interface module 201 disconnects, also need to recover the connection status between described first interface module 101 and described signal output module 1041, and the connection status between described first interface module 101 and described signal receiving module 1042, therefore, whether described electronic equipment also comprises: disconnection detection module 105, disconnect for the connection detected between described first interface module 101 and described second interface module 201; 4th control module 107, for when detecting that the connection between described first interface module 101 and described second interface module 201 disconnects, control described handover module 1043 and connect connection between described signal receiving module 1042 and described first interface module 101, disconnect the connection between described signal output module 1041 and described first interface module 101.
In above-described embodiment, described processing module 104 is by a handover module 1043, perform the switching of the type of described first interface module 101, certainly, described processing module 104 can also perform the switching of the type of described first interface module 101 by other means, such as, when described first interface module 101 is not connected with described second interface module 201, control above-mentioned signal output module 1041 and signal receiving module 1042 does not work, or, only control described signal receiving module 1042 to work, in control, described signal output module 1041 does not work.When the type described second interface module 201 being detected is signal input interface, control signal output module 1041 works, multi-media signal is exported to described second interface module 201 by described first interface module 101, when the type described second interface module 201 being detected is signal output interface, control described signal receiving module 1042 to work, received the multi-media signal of described second interface module 201 transmission by described first interface module 101.
Below with described electronic equipment for computing machine, it is example that described first interface module 101 and described second interface module 201 are digital visual interface, is described in detail to the principle of work of above-mentioned electronic equipment.
Digital visual interface at least comprises three pins, HOT_PLUG (hot plug) pin, PWR (power supply) pin and Video (video) signal pins, wherein, whether HOT_PLUG pin is connected with the video interface of external equipment for detecting, PWR pin is used for providing accessory power supply, and Video signal pins is used for transmission video signal.
In the embodiment of the present invention, by detecting the value of HOT_PLUG pin on video interface and PWR pin, the type of the video interface of external equipment can be identified.
Namely when external equipment is video input apparatus (as a display), when also the video interface of external equipment is video input interface, the value of the PWR signal of its video interface be 1 or the value of 0, HOT_PLUG signal be 1.
Namely, when external equipment is picture output device (as a notebook computer), when also the video interface of external equipment is video output interface, the value of the PWR signal of its video interface is the value of 1, HOT_PLUG signal is 0.
The video interface of the computing machine of the embodiment of the present invention is an adaptive video interface, that is, when the interface type of external equipment is video input interface, the type of the video interface of self is switched to video output interface, when the interface type of external equipment is video output interface, the video interface type of self is switched to video input interface.
In addition, when described computing machine is (namely the same with described computing machine with a self-adaptation equipment, have one from using the equipment of video interface) when connecting, now, user can pass through the mode such as application program or hardware switch, described computer installation is become video input apparatus or picture output device, then in the identification of the type of the video interface of execution external equipment.
In the embodiment of the present invention, be 0 by the equal default setting of value of the PWR signal of the video interface of described computing machine and HOT_PLUG signal, Video signal default setting is input (input) signal, and that is, video interface default setting becomes video input interface.
Below in conjunction with accompanying drawing 4, the interface identification method of described computing machine is described in detail, said method comprising the steps of:
Step 401, starts;
Step 402, detects whether video interface is adaptive video interface, under normal circumstances, if adaptive video interface, the value of the Auto-Video enable signal on mainboard can be set to 1, otherwise can be set to 0, if adaptive video interface, enter step 403, otherwise terminate;
Step 403, detect the value of HOT_PLUG and the PWR signal on video interface, the HOT_PLUG signal wherein on video interface and the initial value of Power signal are (0,0);
Step 404, when detecting that the value of PWR signal occurs by the change (rising edge) of 0 to 1, and when the value of HOT_PLUG signal equals 0, represents that the external equipment inserted is picture output device (as notebook etc.);
Step 405, is set to 1 by the value of the HOT_PLUG signal on mainboard, and keeps the Video signal of video interface to be Input signal.That is, the type of the video interface of self is still remained video input interface, receive the vision signal that external picture output device sends;
Step 406, when detect HOT_PLUG signal value occur by 0 to 1 change (rising edge), illustrates insertion external equipment be video input apparatus (as display etc.);
Step 407, is set to 1 by the value of the PWR signal on mainboard, and is Output (output) signal by Video signal switching; That is, the video interface of self is switched to video output interface, send vision signal to external video input apparatus;
Step 408, when change (under rise edge) that PWR signal occurs by 1 to 0 being detected, illustrates that external equipment is pulled out;
Step 409, the value of the HOT_PLUG on mainboard being set as 0, Video signal switching is Input signal.
Step 410, when change (negative edge) that HOT_PLUG signal occurs by 1 to 0 being detected, illustrates that external equipment is pulled out;
Step 411, it is Input signal that the value of the PWR signal on mainboard is set to 0, Video signal switching.
As can be seen from above-described embodiment, when inserting external equipment, PWR signal on video interface or HOT_PLUG signal have the rising edge of 0 to 1, now, according to logical relation, the PWR signal on mainboard, HOT_PLUG signal and Video signal setting are become to be worth accordingly.
When external equipment is pulled out, PWR signal on video interface and HOT_PLUG signal have one from the negative edge of 1 to 0, now, the value of the PWR signal on mainboard and HOT_PLUG signal are all set to 0, Video signal setting becomes Input signal, namely recovers initial setting.
Above-mentioned interface identification method can adopt and realize with the trigger of band edge, and logic (logic) chip also can be adopted to realize.
In above-described embodiment, described first interface module 101 both can as signal output interface, also can as signal input interface, when the interface of external equipment is signal input interface, switch to signal output interface, when the interface of external equipment is signal output interface, switch to signal input interface, the while of realizing adaptive, the problem of the device damage caused because voltage when two signal output interfaces connect pours in down a chimney can also be prevented.
Certainly, when described first interface module 101 is only signal output interface, also there is interface anti-inserted and can not the problem of transmitting multimedia signal.In order to avoid the problems referred to above, in the embodiment of the present invention, when can be signal input interface at the interface identifying external equipment, send multi-media signal to external equipment, when the interface identifying external equipment is signal output interface, do not perform the transmitting-receiving operation of multi-media signal.
Based on foregoing description, the embodiment of the present invention also provides a kind of electronic equipment, comprising: first interface module, for being connected with the second interface module of external equipment; Described first interface module only can as being signal output interface, can not as signal input interface; Whether connection detection module, be connected with described second interface module for detecting described first interface module; Identification module, for when detecting that described first interface module is connected with described second interface module, identifies the type of described second interface module; Processing module, for when the type identifying described second interface module is signal input interface, multi-media signal is sent to described second interface module by described first interface module, when the type identifying described second interface module is signal output interface, do not perform the transmitting-receiving operation of multi-media signal.
In order to prevent the problem of the device damage caused because voltage when two signal output interfaces connect pours in down a chimney, in the embodiment of the present invention, described first interface module can be defaulted as no signal.
Based on foregoing description, described processing module can comprise: signal output module, for exporting multi-media signal; Handover module, be arranged between described signal output module and described first interface module, for being switched on or switched off the connection between described signal output module and described first interface module, when described first interface module is not connected with described second interface module, connection between described signal output module and described first interface module is in off-state, that is, described first interface module is defaulted as no signal; First control module, for when the type identifying described second interface module is signal input interface, control described handover module and connect connection between described signal output module and described first interface module, switch to signal output interface by described first interface module.
When described first interface module and described second interface module disconnect, also need the connection status recovering described first interface module and described signal output module.Whether now, described electronic equipment also comprises: disconnection detection module, disconnect for the connection detected between described first interface module and described second interface module; Second control module, for when detecting that the connection between described first interface module and described second interface module disconnects, controlling described handover module and disconnecting connection between described signal output module and described first interface module.
When the second interface module of described external equipment is signal output interface, can also by lighting warning light, giving a warning, showing the modes such as error message, prompting user interface is anti-inserted, now described electronic equipment also comprises: reminding module, for when the type how described second interface module being detected is signal output interface, generation error information.
As shown in Figure 5, the embodiment of the present invention also provides a kind of interface identification method, is applied to an electronic equipment, and described electronic equipment comprises: first interface module, for being connected with the second interface module of external equipment, said method comprising the steps of:
Whether step 501, detect described first interface module and be connected with described second interface module; When detecting that described first interface module is connected with described second interface module, perform step 502, otherwise terminate;
Step 502, identifies the type of described second interface module;
Step 503, when the type identifying described second interface module is signal input interface, sends multi-media signal by described first interface module to described second interface module;
Step 504, when the type identifying described second interface module is signal output interface, receives the multi-media signal of described second interface module transmission by described first interface module.
Many functional parts described in this instructions are all called as module, specifically to emphasize the independence of its implementation.
In the embodiment of the present invention, module can use software simulating, to be performed by various types of processor.For example, the executable code module of a mark can comprise one or more physics or the logical block of computer instruction, and for example, it can be built as object, process or function.However, the executable code of institute's identification module is does not have to be physically positioned at together, but can comprise the different instruction be stored in not coordination, when these command logics combine, and its composition module and realize the regulation object of this module.
In fact, executable code module can be individual instructions or many bar instructions, and even can be distributed on multiple different code segment, is distributed in the middle of distinct program, and crosses over the distribution of multiple memory devices.Similarly, service data can be identified in module, and can realize according to any suitable form and be organized in the data structure of any suitable type.Described service data can be collected as individual data collection, or can be distributed on diverse location and (be included in different storage device), and can only be present on system or network as electronic signal at least in part.
When module can utilize software simulating, consider the level of existing hardware technique, so can with the module of software simulating, when not considering cost, those skilled in the art can build corresponding hardware circuit and realize corresponding function, and described hardware circuit comprises existing semiconductor or other discrete element of conventional ultra-large integrated (VLSI) circuit or gate array and such as logic chip, transistor and so on.Module can also use programmable hardware device, the realizations such as such as field programmable gate array, programmable logic array, programmable logic device.
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 (4)
1. an electronic equipment, is characterized in that, comprising:
First interface module, for being connected with the second interface module of external equipment;
Whether connection detection module, be connected with described second interface module for detecting described first interface module;
Identification module, for when detecting that described first interface module is connected with described second interface module, identifies the type of described second interface module;
Processing module, for when the type identifying described second interface module is signal input interface, multi-media signal is sent to described second interface module by described first interface module, when the type identifying described second interface module is signal output interface, do not perform the transmitting-receiving operation of multi-media signal.
2. electronic equipment as claimed in claim 1, it is characterized in that, processing module comprises:
Signal output module, for exporting multi-media signal;
Handover module, be arranged between described signal output module and described first interface module, for being switched on or switched off the connection between described signal output module and described first interface module, when described first interface module is not connected with described second interface module, the connection between described signal output module and described first interface module is in off-state;
First control module, for when the type identifying described second interface module is signal input interface, controls described handover module and connects connection between described signal output module and described first interface module.
3. electronic equipment as claimed in claim 2, is characterized in that, also comprise:
Whether disconnection detection module, disconnect for the connection detected between described first interface module and described second interface module;
Second control module, for when detecting that the connection between described first interface module and described second interface module disconnects, controlling described handover module and disconnecting connection between described signal output module and described first interface module.
4. electronic equipment as claimed in claim 1, is characterized in that, also comprise:
Reminding module, for when the type how described second interface module being detected is signal output interface, generation error information.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510109252.2A CN104636108B (en) | 2011-03-15 | 2011-03-15 | Electronic equipment |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110061985.5A CN102681807B (en) | 2011-03-15 | 2011-03-15 | Electronic equipment and interface identification method |
| CN201510109252.2A CN104636108B (en) | 2011-03-15 | 2011-03-15 | Electronic equipment |
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| CN201110061985.5A Division CN102681807B (en) | 2011-03-15 | 2011-03-15 | Electronic equipment and interface identification method |
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Cited By (1)
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| WO2018032349A1 (en) * | 2016-08-16 | 2018-02-22 | Hewlett-Packard Development Company, L.P. | Connecting devices to ports that support capabilities of the devices |
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| CN1855028A (en) * | 2005-04-21 | 2006-11-01 | 微星科技股份有限公司 | Digital-video multi-media computer system with video expanding outputting function |
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