CN107135355B

CN107135355B - HDMI input source switching method, device and computer readable storage medium

Info

Publication number: CN107135355B
Application number: CN201710257365.6A
Authority: CN
Inventors: 龙全明
Original assignee: Beijing Xiaomi Mobile Software Co Ltd
Current assignee: Beijing Xiaomi Mobile Software Co Ltd
Priority date: 2017-04-19
Filing date: 2017-04-19
Publication date: 2020-07-31
Anticipated expiration: 2037-04-19
Also published as: CN107135355A

Abstract

The disclosure relates to a method, a device and a computer readable storage medium for switching HDMI input sources, wherein the method comprises the following steps: when an HDMI input port communicated with a High Definition Multimedia Interface (HDMI) output port is switched from a first HDMI input port to a second HDMI input port, the first HDMI input port cannot receive content data from a Display Data Channel (DDC), and the working level related to the second HDMI input port is maintained, wherein the at least two HDMI input ports can be communicated with the HDMI output port through the DDC. Therefore, when the HDMI input port is switched to the second HDMI input port, the content data from the second HDMI input port can be rapidly output, so that the screen of the television cannot be blacked and cannot be output when the user switches the HDMI input port communicated with the HDMI output port from the first HDMI input port to the second HDMI input port, and the user experience is improved.

Description

HDMI input source switching method, device and computer readable storage medium

Technical Field

The present disclosure relates to the field of digital communication technologies, and in particular, to a method and an apparatus for switching HDMI input sources, and a computer-readable storage medium.

Background

In the related art, in order to ensure that the transmitted data is not leaked, High-bandwidth Digital Content Protection (HDCP) is used to encrypt the transmitted data during the transmission of High-definition data, so as to ensure that the transmitted data is not decoded.

In the future development process, a High Definition Multimedia Interface (HDMI) is a trend for transmitting High Definition data, and today in internet development, a split television is a future development direction, so that a host of the television can be updated conveniently, and meanwhile, the HDMI is used for transmitting High Definition data.

However, when switching the HDMI input port, the television screen may blank for several seconds, and then the television screen may switch to a new HDMI input port.

Disclosure of Invention

To overcome the problems in the related art, the present disclosure provides an HDMI input source switching method, apparatus, and computer-readable storage medium.

According to a first aspect of the embodiments of the present disclosure, there is provided an HDMI input source switching method, including:

switching an HDMI input port in communication with a High Definition Multimedia Interface (HDMI) output port from a first HDMI input port to a second HDMI input port of the at least two HDMI input ports, disabling a Display Data Channel (DDC) from receiving content data from the first HDMI input port and maintaining an operating level associated with the second HDMI input port,

wherein the at least two HDMI input ports are communicable with the HDMI output port through the DDC.

For the above method, in a possible implementation manner, the working level associated with the second HDMI input port includes at least one of a level of a HPD signal, which is a hot plug, of the second HDMI input port and a level of a clock signal of a TMDS channel, which is a differential signal for minimum transmission of the second HDMI input port.

For the above method, in a possible implementation manner, the method further includes:

maintaining an operating level associated with the first HDMI input port when switching an HDMI input port in communication with the HDMI output port from the first HDMI input port to another HDMI input port; and

causing the DDC to receive content data from the first HDMI input port when an HDMI input port in communication with the HDMI output port is switched back from the other HDMI input port to the first HDMI input port,

wherein the operation level associated with the first HDMI input port includes at least one of a level of an HPD signal, which is a hot plug of the first HDMI input port, and a level of a clock signal of a TMDS channel, which is a transition minimized differential signal, of the first HDMI input port.

when the HDMI input port communicated with the HDMI output port is switched from the first HDMI input port to other HDMI input ports, the DDC state identification bit corresponding to the first HDMI input port is cleared, wherein the DDC state identification bit represents that the DDC of the first HDMI input port is in a normal state.

and when the HDMI input port communicated with the HDMI output port is switched back to the first HDMI input port from the other HDMI input ports, the DDC state identification bit is set.

when the number of the at least two HDMI input ports is more than three, when the HDMI input port communicated with the HDMI output port is switched from the first HDMI input port to the second HDMI input port, maintaining the working level related to other HDMI input ports except the first HDMI input port and the second HDMI input port;

wherein the operation level associated with the other HDMI input ports other than the first HDMI input port and the second HDMI input port includes at least one of a level of an HPD signal, which is a hot plug, of the other HDMI input port and a level of a clock signal of a TMDS channel, which is a differential signal transmitted minimally, of the other HDMI input port.

According to a second aspect of the embodiments of the present disclosure, there is provided an HDMI input source switching apparatus comprising:

at least two high definition multimedia interfaces (HDMI input ports);

one HDMI output port corresponding to the at least two HDMI input ports, the at least two HDMI input ports being capable of communicating with the HDMI output port through a Display Data Channel (DDC); and

the first control module is used for enabling the DDC not to receive the content data from the first HDMI input port and maintaining the working level related to the second HDMI input port when the HDMI input port communicated with the HDMI output port is switched from the first HDMI input port to the second HDMI input port.

For the above-described apparatus, in one possible implementation,

the operation level related to the second HDMI input port includes at least one of a level of a HPD signal, which is a hot plug of the second HDMI input port, and a level of a clock signal of a TMDS channel, which is a transition minimized differential signal, of the second HDMI input port.

For the above apparatus, in a possible implementation manner, the method further includes:

the second control module is used for maintaining the working level related to the first HDMI input port when the HDMI input port communicated with the HDMI output port is switched from the first HDMI input port to other HDMI input ports; and

a third control module to cause the DDC to receive content data from the first HDMI input port when switching the HDMI input port in communication with the HDMI output port from the other HDMI input port back to the first HDMI input port,

and the clearing module is used for clearing the DDC state identification bit corresponding to the first HDMI input port when the HDMI input port communicated with the HDMI output port is switched to other HDMI input ports, wherein the DDC state identification bit represents that the DDC of the first HDMI input port is in a normal state.

and the setting module is used for setting the DDC state identification bit when the HDMI input port communicated with the HDMI output port is switched back to the first HDMI input port from the other HDMI input ports.

a fourth control module, configured to, when the number of the at least two HDMI input ports is three or more, maintain the operating levels associated with other HDMI input ports except the first HDMI input port and the second HDMI input port when the HDMI input port communicated with the HDMI output port is switched from the first HDMI input port to the second HDMI input port; and

According to a third aspect of the embodiments of the present disclosure, there is provided an HDMI input source switching apparatus including:

a processor;

a memory for storing processor-executable instructions;

at least two high definition multimedia interfaces (HDMI input ports); and

one HDMI output port corresponding to the at least two HDMI input ports capable of communicating with the HDMI output port through a Display Data Channel (DDC),

wherein the processor is configured to:

when the HDMI input port communicated with the HDMI output port is switched from a first HDMI input port to a second HDMI input port of the at least two HDMI input ports, the DDC cannot receive the content data from the first HDMI input port, and the working level related to the second HDMI input port is maintained.

According to a fourth aspect of embodiments of the present disclosure, there is provided a computer readable storage medium having stored thereon a computer program which, when executed by a processor, performs the steps of the above method.

The technical scheme provided by the embodiment of the disclosure can have the following beneficial effects: the method and the device can ensure that when the HDMI input port is switched to the second HDMI input port, the content data from the second HDMI input port can be rapidly output, so that when a user switches the HDMI input port communicated with the HDMI output port from the first HDMI input port to the second HDMI input port, a television screen cannot be blacked and is not output. Therefore, the content data displayed on the screen of the television can be quickly switched in response to the quick switching of the HDMI input port, and the user experience is improved.

In a possible implementation manner, the technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the method and the device can ensure that when the HDMI input port is switched to any other HDMI input port, the content data from any other HDMI input port can be rapidly output, so that when the HDMI input port is switched to any other HDMI input port, a television screen cannot be blacked but is not output, and the user experience is improved.

In a possible implementation manner, the technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: the method and the device can ensure that the content data from the first HDMI input port can be rapidly output when the first HDMI input port is switched back, so that the screen of the television cannot be blacked and cannot be output when the first HDMI input port is switched back, and the user experience is improved.

In a possible implementation manner, the technical solution provided by the embodiments of the present disclosure may include the following beneficial effects: whether the DDC of the HDMI input port is in a normal state can be judged according to the existence of the DDC state identification bit.

It is to be understood that both the foregoing general description and the following detailed description are exemplary and explanatory only and are not restrictive of the disclosure.

Drawings

The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and together with the description, serve to explain the principles of the disclosure.

Fig. 1a is an overall architecture diagram of a split tv set according to an exemplary embodiment.

Fig. 1b is a DDC switching diagram of an HDMI input port of a split tv set according to an exemplary embodiment.

Fig. 2 is a flowchart illustrating an HDMI input source switching method according to an exemplary embodiment.

Fig. 3 is a flowchart illustrating one example of an HDMI input source switching method according to an exemplary embodiment.

Fig. 4 is a flowchart illustrating one example of an HDMI input source switching method according to an exemplary embodiment.

Fig. 5 is a block diagram illustrating an HDMI input source switching apparatus according to an exemplary embodiment.

Fig. 6 is a block diagram illustrating one example of an HDMI input source switching apparatus according to an exemplary embodiment.

Fig. 7 is a block diagram illustrating one example of an HDMI input source switching apparatus according to an exemplary embodiment.

Fig. 8 is a block diagram illustrating an apparatus 800 for HDMI input source switching according to an example embodiment.

Detailed Description

Reference will now be made in detail to the exemplary embodiments, examples of which are illustrated in the accompanying drawings. When the following description refers to the accompanying drawings, like numbers in different drawings represent the same or similar elements unless otherwise indicated. The implementations described in the exemplary embodiments below are not intended to represent all implementations consistent with the present disclosure. Rather, they are merely examples of apparatus and methods consistent with certain aspects of the present disclosure, as detailed in the appended claims.

Fig. 1a is an overall architecture diagram of a split tv set according to an exemplary embodiment. As shown in fig. 1a, the split tv set may include a tv screen 1 and a split main unit 2, and the split main unit 2 is connected with the tv screen 1 through a miport line. The split host 2 may include three high-definition multimedia interfaces, i.e., an HDMI input port and an HDMI output port, HDMI1, HDMI 2, and HDMI 3. The HDMI input ports included in the split host 2 can be freely switched. The HDMI input ports may each communicate with an HDMI output port through a display data channel, DDC, to output content data of the HDMI input port communicating with the HDMI output port to the television screen 1. Only one HDMI input port can be connected to the HDMI output port at the same time. The split host 2 and the television screen 1 are communicated through a miport line.

Optionally, three input ports HDMI1, HDMI 2, and HDMI 3 may share one DDC, and only one DDC of the three input ports HDMI1, HDMI 2, and HDMI 3 is connected and DDCs of the other two input ports are turned off at the same time. Optionally, in response to switching of the input port communicated with the HDMI output port, the DDC of the input port communicated with the HDMI output port before switching is turned off, and the DDC of the input port communicated with the HDMI output port after switching is connected.

For example, fig. 1b is a DDC switching diagram of an HDMI input port of a split tv according to an exemplary embodiment. As shown in fig. 1b, if the HDMI input port communicating with the HDMI output port is switched from HDMI1 to HDMI 2, the DDC of HDMI1 is turned off and the DDC of HDMI 2 is connected. Similarly, if the HDMI input port communicating with the HDMI output port is switched from HDMI 2 to HDMI 3, the DDC of HDMI 2 is turned off and the DDC of HDMI 3 is connected. Similarly, if the HDMI input port communicating with the HDMI output port is switched from HDMI1 to HDMI 3, the DDC of HDMI1 is turned off and the DDC of HDMI 3 is connected.

Optionally, the number of the HDMI input ports included in the split host 2 may be increased or decreased according to a requirement, for example, the split host 2 may include two HDMI input ports, and for example, the split host 2 may include more than three HDMI input ports, which is not limited by the present disclosure. Alternatively, the HDMI input port may be connected to an input source, and the input source may include various devices capable of inputting video signals and audio signals to a television through the HDMI, such as a television box, a set-top box, a computer, and the like, which is not limited in this disclosure.

Optionally, the HDMI output port outputs content data from the HDMI input port communicated with the HDMI output port to the tv screen 1 through the miport line, and the tv screen 1 displays the content data from the HDMI input port communicated with the HDMI output port, so that a user can watch a program corresponding to the content data.

For example, assuming that three HDMI input ports, HDMI1, HDMI 2, and HDMI 3, are respectively connected to the set-top box, the computer, and the tv box, when the HDMI output port is communicated with HDMI1, the tv screen 1 can display the content included in the set-top box, when the HDMI output port is communicated with HDMI 2, the tv screen 1 can display the content included in the computer, and when the HDMI output port is communicated with HDMI 3, the tv screen 1 can display the content included in the tv box.

Fig. 2 is a flowchart illustrating an HDMI input source switching method according to an exemplary embodiment. The HDMI input source switching method may be applied to a terminal such as the split body 2, and is not limited herein. As shown in fig. 2, the HDMI input source switching method may include the following steps.

In step S210, when the HDMI input port communicating with the HDMI output port is switched from a first HDMI input port to a second HDMI input port of the at least two HDMI input ports, which can communicate with the HDMI output port through the DDC, the DDC is disabled from receiving the content data from the first HDMI input port, and the operation level associated with the second HDMI input port is maintained.

Alternatively, the user may switch the HDMI input port in communication with the HDMI output port by using a controller, such as a remote controller, a smart phone, or the like, capable of controlling the split host 2, for example, the user may switch the HDMI input port in communication with the HDMI output port to the first HDMI input port by clicking a key (which may be a physical key or a virtual key) on the remote controller corresponding to the first HDMI input port to select content data from the first HDMI input port.

It should be noted that, herein, switching of an HDMI input port in communication with an HDMI output port from a first HDMI input port to a second HDMI input port of at least two HDMI input ports means that a source switching action is performed in software, and does not mean that a source is physically plugged and unplugged. The first HDMI input port and the second HDMI input port are connected with corresponding input sources.

Alternatively, the content data from the first HDMI input port may be content data from an input source, such as a notebook, connected to the first HDMI input port, and the type of the content data may include video, audio, game, and the like. The present disclosure does not limit the type of content data.

In one possible implementation, the operation level associated with the second HDMI input port may include at least one of a level of a hot plug, i.e., an HPD signal, of the second HDMI input port and a level of a clock signal of the TMDS channel, which is a minimized transmission differential signal, of the second HDMI input port. Optionally, the operating level associated with the second HDMI input port may also include the level of other signals of the TMDS channel.

For example, assuming that three HDMI input ports, HDMI1, HDMI 2, and HDMI 3, are connected to the set-top box, the computer, and the tv box, respectively, when the HDMI input port communicating with the HDMI output port is switched from HDMI1 to HDMI 2, the DDC cannot receive the content data from the set-top box, and at the same time, since the operation level related to HDMI 2 is maintained, the DDC is switched from HDMI1 to HDMI 2, and the DDC can receive the content data from the computer.

Therefore, when the HDMI is switched to the second HDMI input port, the second HDMI input port can immediately transmit the content data to the HDMI output port, so that the HDMI output port can quickly output the content data from the second HDMI input port, and the screen of the television cannot be blacked and cannot be output when a user switches the HDMI input port communicated with the HDMI output port from the first HDMI input port to the second HDMI input port. Therefore, the content data displayed on the screen of the television can be quickly switched in response to the quick switching of the HDMI input port, and the user experience is improved.

In one possible implementation manner, when the number of the at least two HDMI input ports is three or more, when the HDMI input port connected to the HDMI output port is switched from the first HDMI input port to the second HDMI input port, the working levels associated with the other HDMI input ports except the first HDMI input port and the second HDMI input port are maintained, where the working levels associated with the other HDMI input ports include at least one of the level of the HPD signal, which is the hot plug of the other HDMI input ports, and the level of the clock signal of the TMDS channel, which is the minimum transmission differential signal of the other HDMI input ports.

Therefore, when the television is switched to any other HDMI input port, the content data from any other HDMI input port can be rapidly output, so that the television screen cannot be blacked but is not output when the television is switched to any other HDMI input port, and the user experience is improved.

Fig. 3 is a flowchart illustrating one example of an HDMI input source switching method according to an exemplary embodiment. As shown in fig. 3, in one possible implementation, the HDMI input source switching method may include steps S310 and S330.

In step S310, when the HDMI input port communicating with the HDMI output port is switched from the first HDMI input port to another HDMI input port, the operation level related to the first HDMI input port is maintained.

Optionally, the other HDMI input ports are other input ports other than the first HDMI input port. For example, if HDMI1 in fig. 1a is the first HDMI input port, HDMI 2 and HDMI 3 are the other HDMI input ports.

In one possible implementation, the operation level associated with the first HDMI input port may include at least one of a level of a hot plug, i.e., an HPD signal, of the first HDMI input port and a level of a clock signal of a transition minimized differential signal, i.e., a TMDS channel, of the first HDMI input port. Optionally, the operating level associated with the first HDMI input port may also include the level of other signals of the TMDS channel.

In step S330, when the HDMI input port communicating with the HDMI output port is switched back from the other HDMI input port to the first HDMI input port, the DDC is caused to receive the content data from the first HDMI input port.

For example, when the HDMI input port in communication with the HDMI output port is switched from HDMI 2 to HDMI1, the DDC cannot receive the content data from HDMI 2, and at the same time, the operation level associated with HDMI1 is maintained, and when the HDMI input port in communication with the HDMI output port is switched back to HDMI1, the tv screen can quickly display the content data corresponding to HDMI 1.

Therefore, when the first HDMI input port is switched back, the content data from the first HDMI input port can be rapidly output, so that the screen of the television cannot be blacked and cannot be output when the first HDMI input port is switched back, and the user experience is improved.

Fig. 4 is a flowchart illustrating one example of an HDMI input source switching method according to an exemplary embodiment. As shown in fig. 4, in one possible implementation, the HDMI input source switching method may include step S410 and step S430.

In step S410, when the HDMI input port connected to the HDMI output port is switched from the first HDMI input port to another HDMI input port, the DDC state flag corresponding to the first HDMI input port is cleared, where the DDC state flag indicates that the DDC of the first HDMI input port is in a normal state.

In step S430, when the HDMI input port that communicates with the HDMI output port is switched back from the other HDMI input port to the first HDMI input port, the DDC state identification bit is set.

For example, assuming that two HDMI input ports, HDMI1 and HDMI 2, are connected to the set-top box and the television box, respectively, the DDC cannot receive content data from the set-top box when the HDMI input port in communication with the HDMI output port is switched from HDMI1 to HDMI 2. Meanwhile, the working level related to the HDMI1 is maintained, that is, the set-top box outputs 5V to the split host 2 and the split host 2 returns 5V, that is, an HPD signal to the set-top box, and the set-top box considers that only the DDC cannot receive the information of the television host 2 and cannot communicate with the television host 2 for a while. Although the DDC has been physically switched to HDMI 2, the set-top box always inquires of the state of the tv host 2. Until switching back from HDMI 2 to HDMI1, the register of the tv host 2 sets the DDC state identification bit, indicating that the DDC is restored to normal at this time. When the set-top box inquires the DDC state identification bit, hdcp interaction is recovered, so that the set-top box can continue to work. At the same time, data is sent out on the HDMI1 immediately, so that the output can be seen immediately and hdcp is recovered to be normal as soon as the HDMI input port is switched.

Therefore, whether the DDC of the HDMI input port is in a normal state can be judged according to the existence of the DDC state identification bit.

Fig. 5 is a block diagram illustrating an HDMI input source switching apparatus according to an exemplary embodiment. Referring to fig. 5, the apparatus includes at least two HDMI input ports 510, e.g., HDMI input port 510-1 to HDMI input port 510-n (n is a natural number greater than or equal to 2), an HDMI output port 530, and a first control module 550. Wherein the first control module 550 is configured to disable the DDC from receiving the content data from the first HDMI input port and maintain the operating level associated with the second HDMI input port when the HDMI input port in communication with the HDMI output port is switched from the first HDMI input port, e.g., HDMI input port 510-1, to the second HDMI input port, e.g., HDMI input port 510-n, of the at least two HDMI input ports.

In one possible implementation, the operating level associated with the second HDMI input port includes at least one of a level of a hot plug, i.e., HPD, signal of the second HDMI input port and a level of a clock signal of the TMDS channel, which is a minimized transmission differential signal, of the second HDMI input port.

In a possible implementation manner, the apparatus may further include a fourth control module 570, where the fourth control module 570 is configured to, when the number of the at least two HDMI input ports is three or more, switch an HDMI input port connected to the HDMI output port from the first HDMI input port to the second HDMI input port, maintain an operating level associated with other HDMI input ports except the first HDMI input port and the second HDMI input port; wherein, the working level related to other HDMI input ports except the first HDMI input port and the second HDMI input port comprises at least one of the level of HPD signal which is hot plug of other HDMI input ports and the level of TMDS channel clock signal which is minimum transmission differential signal of other HDMI input ports.

Fig. 6 is a block diagram illustrating one example of an HDMI input source switching apparatus according to an exemplary embodiment. Referring to fig. 6, the apparatus may further include a second control module 610 and a third control module 630. The second control module 610 is configured to maintain an operating level associated with the first HDMI input port when the HDMI input port connected to the HDMI output port is switched from the first HDMI input port to another HDMI input port. The third control module 630 is configured to enable the DDC to receive the content data from the first HDMI input port when the HDMI input port connected to the HDMI output port is switched back from the other HDMI input port to the first HDMI input port, wherein the working level associated with the first HDMI input port includes at least one of a level of an HPD signal, which is a hot plug of the first HDMI input port, and a level of a clock signal of a TMDS channel, which is a minimized transmission differential signal, of the first HDMI input port.

Fig. 7 is a block diagram illustrating one example of an HDMI input source switching apparatus according to an exemplary embodiment. Referring to fig. 7, the apparatus may further include a clearing module 710 and a setting module 730. The clearing module 710 is configured to clear the DDC status flag corresponding to the first HDMI input port when the HDMI input port communicated with the HDMI output port is switched from the first HDMI input port to another HDMI input port, where the DDC status flag indicates that the DDC of the first HDMI input port is in a normal state. The setting module 730 is configured to set the DDC status flag when the HDMI input port connected to the HDMI output port is switched back from the other HDMI input ports to the first HDMI input port.

With regard to the apparatus in the above-described embodiment, the specific manner in which each operation is performed has been described in detail in the embodiment related to the method, and will not be described in detail here.

Therefore, the method can ensure that the content data from the second HDMI input port can be quickly output when the HDMI input port is switched to the second HDMI input port, so that the screen of the television cannot be blacked and is not output when the user switches the HDMI input port communicated with the HDMI output port from the first HDMI input port to the second HDMI input port. Therefore, the content data displayed on the screen of the television can be quickly switched in response to the quick switching of the HDMI input port, and the user experience is improved.

The method and the device can ensure that when the HDMI input port is switched to any other HDMI input port, the content data from any other HDMI input port can be rapidly output, so that when the HDMI input port is switched to any other HDMI input port, a television screen cannot be blacked but is not output, and the user experience is improved.

The method and the device can ensure that the content data from the first HDMI input port can be rapidly output when the first HDMI input port is switched back, so that the screen of the television cannot be blacked and cannot be output when the first HDMI input port is switched back, and the user experience is improved.

And, can judge whether DDC of HDMI input port is in the normal condition according to the existence of DDC state identification bit.

Fig. 8 is a block diagram illustrating an apparatus 800 for HDMI input source switching according to an example embodiment. For example, the apparatus 800 may be a mobile phone, a computer, a digital broadcast terminal, a messaging device, a game console, a tablet device, a medical device, an exercise device, a personal digital assistant, and the like.

Referring to fig. 8, the apparatus 800 may include one or more of the following components: processing component 802, memory 804, power component 806, multimedia component 808, audio component 810, input/output (I/O) interface 812, sensor component 814, and communication component 816.

The processing component 802 generally controls overall operation of the device 800, such as operations associated with display, telephone calls, data communications, camera operations, and recording operations. The processing components 802 may include one or more processors 820 to execute instructions to perform all or a portion of the steps of the methods described above. Further, the processing component 802 can include one or more modules that facilitate interaction between the processing component 802 and other components. For example, the processing component 802 can include a multimedia module to facilitate interaction between the multimedia component 808 and the processing component 802.

The memory 804 is configured to store various types of data to support operations at the apparatus 800. Examples of such data include instructions for any application or method operating on device 800, contact data, phonebook data, messages, pictures, videos, and so forth. The memory 804 may be implemented by any type or combination of volatile or non-volatile memory devices such as Static Random Access Memory (SRAM), electrically erasable programmable read-only memory (EEPROM), erasable programmable read-only memory (EPROM), programmable read-only memory (PROM), read-only memory (ROM), magnetic memory, flash memory, magnetic or optical disks.

Power components 806 provide power to the various components of device 800. The power components 806 may include a power management system, one or more power supplies, and other components associated with generating, managing, and distributing power for the apparatus 800.

The multimedia component 808 includes a screen that provides an output interface between the device 800 and a user, in some embodiments, the screen may include a liquid crystal display (L CD) and a Touch Panel (TP). if the screen includes a touch panel, the screen may be implemented as a touch screen to receive input signals from a user.

The audio component 810 is configured to output and/or input audio signals. For example, the audio component 810 includes a Microphone (MIC) configured to receive external audio signals when the apparatus 800 is in an operational mode, such as a call mode, a recording mode, and a voice recognition mode. The received audio signals may further be stored in the memory 804 or transmitted via the communication component 816. In some embodiments, audio component 810 also includes a speaker for outputting audio signals.

The I/O interface 812 provides an interface between the processing component 802 and peripheral interface modules, which may be keyboards, click wheels, buttons, etc. These buttons may include, but are not limited to: a home button, a volume button, a start button, and a lock button.

The sensor assembly 814 includes one or more sensors for providing various aspects of state assessment for the device 800. For example, the sensor assembly 814 may detect the open/closed status of the device 800, the relative positioning of components, such as a display and keypad of the device 800, the sensor assembly 814 may also detect a change in the position of the device 800 or a component of the device 800, the presence or absence of user contact with the device 800, the orientation or acceleration/deceleration of the device 800, and a change in the temperature of the device 800. Sensor assembly 814 may include a proximity sensor configured to detect the presence of a nearby object without any physical contact. The sensor assembly 814 may also include a light sensor, such as a CMOS or CCD image sensor, for use in imaging applications. In some embodiments, the sensor assembly 814 may also include an acceleration sensor, a gyroscope sensor, a magnetic sensor, a pressure sensor, or a temperature sensor.

The communication component 816 is configured to facilitate communications between the apparatus 800 and other devices in a wired or wireless manner. The device 800 may access a wireless network based on a communication standard, such as WiFi, 2G or 3G, or a combination thereof. In an exemplary embodiment, the communication component 816 receives a broadcast signal or broadcast related information from an external broadcast management system via a broadcast channel. In an exemplary embodiment, the communication component 816 further includes a Near Field Communication (NFC) module to facilitate short-range communications. For example, the NFC module may be implemented based on Radio Frequency Identification (RFID) technology, infrared data association (IrDA) technology, Ultra Wideband (UWB) technology, Bluetooth (BT) technology, and other technologies.

In an exemplary embodiment, the apparatus 800 may be implemented by one or more Application Specific Integrated Circuits (ASICs), Digital Signal Processors (DSPs), Digital Signal Processing Devices (DSPDs), programmable logic devices (P L D), Field Programmable Gate Arrays (FPGAs), controllers, microcontrollers, microprocessors, or other electronic components for performing the methods described above.

In an exemplary embodiment, a non-transitory computer-readable storage medium comprising instructions, such as the memory 804 comprising instructions, executable by the processor 820 of the device 800 to perform the above-described method is also provided. For example, the non-transitory computer readable storage medium may be a ROM, a Random Access Memory (RAM), a CD-ROM, a magnetic tape, a floppy disk, an optical data storage device, and the like.

Other embodiments of the disclosure will be apparent to those skilled in the art from consideration of the specification and practice of the disclosure disclosed herein. This application is intended to cover any variations, uses, or adaptations of the disclosure following, in general, the principles of the disclosure and including such departures from the present disclosure as come within known or customary practice within the art to which the disclosure pertains. It is intended that the specification and examples be considered as exemplary only, with a true scope and spirit of the disclosure being indicated by the following claims.

It will be understood that the present disclosure is not limited to the precise arrangements described above and shown in the drawings and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. An HDMI input source switching apparatus, comprising:

at least two high definition multimedia interfaces (HDMI input ports);

the first control module is used for enabling the DDC not to receive the content data from the first HDMI input port and maintaining the working level related to the second HDMI input port when the HDMI input port communicated with the HDMI output port is switched from the first HDMI input port to the second HDMI input port;

a second control module for maintaining an operating level associated with a first HDMI input port of the at least two HDMI input ports when switching the HDMI input port in communication with the HDMI output port from the first HDMI input port to another HDMI input port,

wherein the HDMI output port is connected with the at least two HDMI input ports respectively in advance, the switching comprises the action of switching source and source by using software,

the operation level includes at least one of a level of an HPD signal and a level of a clock signal of a TMDS channel.

2. The HDMI input source switching apparatus of claim 1, further comprising:

3. The HDMI input source switching apparatus of claim 1, further comprising:

4. The HDMI input source switching apparatus of claim 3, further comprising:

5. The HDMI input source switching apparatus of claim 1, further comprising:

6. An HDMI input source switching method, comprising:

when an HDMI input port communicated with a high-definition multimedia interface (HDMI) output port is switched from a first HDMI input port to a second HDMI input port, wherein the first HDMI input port is at least two HDMI input ports, a Display Data Channel (DDC) cannot receive content data from the first HDMI input port, and the working level related to the second HDMI input port is maintained; and

maintaining an operating level associated with the first HDMI input port when switching the HDMI input port in communication with the HDMI output port from the first of the at least two HDMI input ports to the other HDMI input port;

wherein the at least two HDMI input ports are communicable with the HDMI output port through the DDC,

the HDMI output port is connected with the at least two HDMI input ports in advance, the switching comprises the action of switching the source into the source realized by software,

7. The method of claim 6, further comprising:

8. The method of claim 6, further comprising:

9. The method of claim 8, further comprising:

10. The method of claim 6, further comprising:

11. An HDMI input source switching apparatus, comprising:

a processor;

a memory for storing processor-executable instructions;

at least two high definition multimedia interfaces (HDMI input ports); and

wherein the processor is configured to:

when the HDMI input port communicated with the HDMI output port is switched from a first HDMI input port to a second HDMI input port of the at least two HDMI input ports, enabling the DDC not to receive the content data from the first HDMI input port and maintaining the working level related to the second HDMI input port;

maintaining an operating level associated with a first of the at least two HDMI input ports when switching the HDMI input port in communication with the HDMI output port from the first HDMI input port to the other HDMI input port,

12. A computer-readable storage medium, on which a computer program is stored which, when being executed by a processor, carries out the steps of the method according to any one of claims 6 to 10.