WO2015106458A1

WO2015106458A1 - Hdmi device switching method, apparatus and system

Info

Publication number: WO2015106458A1
Application number: PCT/CN2014/070925
Authority: WO
Inventors: 廖圣华
Original assignee: 华为终端有限公司
Priority date: 2014-01-20
Filing date: 2014-01-20
Publication date: 2015-07-23

Abstract

The present invention relates to the technical field of digital multimedia. Disclosed are an HDMI device switching method, an apparatus and a system, solving problems that steps of a prior switching method are complicated and a required HDMI device cannot be quickly and accurately selected. The HDMI device switching method provided by embodiments of the present invention comprises: obtaining a control signal sent by a remote control, wherein the control signal carries type information of a target HDMI device selected by a user; querying type information of an alternative HDMI device connected to an HDMI input interface; and when the type information of the alternative HDMI device is the same as the type information of the target HDMI device, outputting a signal on the HDMI input interface to a display module.

Description

HDMI device switching method, device and system

The present invention relates to digital multimedia technologies, and more particularly to HDMI device switching methods, devices, and systems.

Background technique

High Definition Multimedia Interface (HDMI) is a dedicated digital interface for image transmission that simultaneously transmits audio and video signals with a maximum data transfer speed of 5Gbps. Due to its high transmission speed, HDMI is widely used in set-top boxes, DVD players, personal computers, video game consoles, integrated amplifiers, digital audio and televisions. These HDMI-enabled devices are called HDMI devices.

At present, there are more and more HDMI devices used in daily life, such as set-top boxes, DVD players, personal computers, etc. People tend to connect these HDMI devices to large-screen TVs and switch HDMI devices as desired to control The signal from one of the HDMI devices is output to the TV screen, so you can enjoy the experience brought by the big screen.

Usually, the TV has multiple HDMI input interfaces, each HDMI input can be connected to an HDMI device, and the control module in the TV numbers each HDMI input. When the HDMI device needs to be switched, the user presses the TV. The "Source" button on the remote control generates a control signal. After receiving the control signal, the control module displays multiple numbered HDMI input interface options on the TV screen. The user operates the buttons on the remote control (direction keys). , "OK" button) Select one of the HDMI input connectors according to the number, for example, select the HDMI input connector numbered "1", and then the control module outputs the signal on the corresponding HDMI input interface to the TV according to the selected number. on the screen.

The existing HDMI device switching method has the following problems: When the user selects the number of the HDMI input interface, it is not necessarily clear what device the HDMI device connected to the numbered HDMI input interface is, only when the selected HDMI input interface After the signal is displayed on the TV screen Know if you choose the correct one. If you choose the wrong one, you need to start the above HDMI device switching process again by pressing the "Source" button.

Summary of the invention

Embodiments of the present invention provide an HDMI device switching method, apparatus, and system, which solve the problem that the existing switching method steps are cumbersome and cannot quickly and accurately select a desired HDMI device.

In order to achieve the above object, embodiments of the present invention use the following technical solutions:

In a first aspect, an embodiment of the present invention provides an HDMI device switching method, including: (1) acquiring a control signal sent by a remote controller, where the control signal carries type information of a destination HDMI device selected by a user; (2) Querying type information of an alternative HDMI device connected to the HDMI input interface; (3) outputting a signal on the HDMI input interface when the type information of the candidate HDMI device is the same as the type information of the destination HDMI device To the display module.

With reference to the first aspect, in a first possible implementation manner of the first aspect, the type information of the candidate HDMI device is pre-formed in the candidate HDMI device; the query is an alternative HDMI connected to the HDMI input interface The step of the type information of the device includes: transmitting a type information query instruction to the candidate HDMI device connected to the HDMI input interface; receiving a query result sent by the candidate HDMI device connected to the HDMI input interface, the query result carrying the interface with the HDMI input Type information of the connected alternative HDMI device.

With reference to the first aspect, in a second possible implementation manner of the first aspect, the HDMI device switching method further includes: when the type information of the candidate HDMI device is different from the type information of the destination HDMI device , select the HDMI input interface that has not been queried, and perform step ( 2 ).

In combination with the first aspect or any of the foregoing possible implementation manners, in a third possible implementation manner of the first aspect, the type information of the destination HDMI device and the type information of the candidate HDMI device Both are 16-bit binary codes specified in the HDMI Consumer Electronics Control Protocol, and the type information of the candidate HDMI device is the same as the type information of the destination HDMI device: The 16-bit binary codes of the two types of information are the same.

In a second aspect, an embodiment of the present invention provides a method for switching an HDMI device, including: The button information pressed by the user generates a control signal, where the control signal carries the identifier on the button

Type information of the HDMI device; transmitting the control signal to a control module of the HDMI device, so that the control module outputs a signal on the identified HDMI device to the display module according to the type information.

In conjunction with the second aspect, in a first possible implementation of the second aspect, the type information of the HDMI device is a 16-bit binary code specified in the HDMI Consumer Electronics Control Protocol.

In a third aspect, an embodiment of the present invention provides an HDMI device switching apparatus, including: an acquiring unit, configured to acquire a control signal sent by a remote controller, where the control signal carries type information of a destination HDMI device selected by a user; a unit, configured to query type information of an alternative HDMI device connected to the HDMI input interface; an output unit, the type information of the candidate HDMI device that is queried by the query unit, and the destination HDMI acquired by the acquiring unit If the type information of the device is the same, the signal on the HDMI input interface is output to the display module.

With reference to the third aspect, in a first possible implementation manner of the third aspect, the query unit includes: an instruction sending subunit, configured to send a type information query instruction to an alternate HDMI device connected to the HDMI input interface; The obtaining subunit is configured to receive a query result sent by an alternate HDMI device connected to the HDMI input interface, where the query result carries type information of an alternative HDMI device connected to the HDMI input interface.

In a fourth aspect, an embodiment of the present invention provides an HDMI device switching apparatus, including: a button; a signal generating unit, configured to generate a control signal according to the button information pressed by the user, where the control signal carries the identifier on the button a type information of the HDMI device; a signal sending unit, configured to send the control signal generated by the signal generating unit to a control module of the HDMI device, so that the control module sends the identified HDMI device according to the type information The signal is output to the display module.

According to a fifth aspect, an embodiment of the present invention provides an HDMI device switching system, including: a remote controller, configured to generate a control signal according to key information pressed by a user, where the control signal carries an HDMI device identified by the button Type information, and then transmitting the control signal to the HDMI device a control module, configured to acquire a control signal sent by the remote controller, where the control signal carries type information of a destination HDMI device selected by the user, and the type information of the destination HDMI device is an HDMI device identified by the button Type information; re-query type information of an alternative HDMI device connected to the HDMI input interface; finally, when the type information of the candidate HDMI device is the same as the type information of the destination HDMI device, the HDMI input interface is The signal is output to the display module; and the display module is configured to display the signal output by the control module.

In the HDMI device switching method, device and system provided by the embodiment of the present invention, when the user selects the required HDMI device, only the button on the remote controller button is required to operate, and a button having the corresponding identifier on the remote controller is pressed. The remote controller can send a control signal carrying the type information of the HDMI device identified on the button. After receiving the signal, the control module can output the signal on the identified HDMI device to the display module, thereby completing the switching process. The user needs to complete the work just by pressing a button on the remote control. The operation is very simple and fast. In addition, the control module outputs the signal on the identified HDMI device to the display module by using the type information of the HDMI device identified on the button, thereby ensuring that the control module ensures that the signal on the identified HDMI device is output to the display module. The accuracy of the switch.

DRAWINGS

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments will be briefly described below. It is obvious that the drawings in the following description are only the present invention. For some embodiments, other drawings may be obtained from those of ordinary skill in the art without departing from the drawings.

1 is a flowchart of a method for switching an HDMI device according to Embodiment 1 of the present invention; FIG. 2 is a flowchart of a specific implementation method of step 102 in the method shown in FIG. 1. FIG. 3 is a flowchart of Embodiment 1 of the present invention. FIG. 4 is a flowchart of a method for switching an HDMI device according to Embodiment 2 of the present invention; FIG. 5 is a flowchart of a device for switching an HDMI device according to Embodiment 3 of the present invention; Figure 6 is a block diagram of an HDMI device switching apparatus according to Embodiment 4 of the present invention; Figure 7 is a block diagram of an HDMI device switching system according to Embodiment 5 of the present invention. detailed description

The technical solutions in the embodiments of the present invention are clearly and completely described in the following with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments obtained by a person of ordinary skill in the art based on the embodiments of the present invention without creative efforts are within the scope of the present invention.

Example 1

This embodiment provides an HDMI device switching method. As shown in FIG. 1, the following steps are included. The main body of the method is a control module capable of simultaneously connecting a plurality of HDMI devices. For example, the control module in the TV, the control module in the box of OTT (Over The Top, providing various application services to the user through the Internet).

101. Acquire a control signal sent by a remote controller, where the control signal carries type information of a destination HDMI device selected by the user.

Specifically, the control signal sent by the remote controller is a wireless signal, and the control module can acquire the signal. In the prior art, when the HDMI device is switched, the buttons operated by the user on the remote controller include: "Source" button, direction button and "OK" button. The control signals generated when these buttons are pressed are independent of the HDMI device, and are not included. Type information of the HDMI device.

The type information of the HDMI device refers to information related to the type (category) of the HDMI device, and the purpose of setting the information is to distinguish different types of HDMI devices. For example, the type information of the set top box is different from the type information of the DVD player. The specific form of the type information can be set as desired, such as a string or number, or other form known to those skilled in the art.

In this step, the remote controller is provided with a button for identifying the type of the HDMI device, such as a button labeled "DVD". If the user wants to select a DVD player, the button needs to be pressed, after which the remote controller generates a control signal and transmits the button. The control signal carries the type information of the destination HDMI device (DVD player) selected by the user.

102. Query the type information of the alternative HDMI device connected to the HDMI input interface.

Specifically, the optional HDMI device is connected to the control module through the HDMI input interface, The HDMI device has type information, which can be prefabricated in the alternate HDMI device, and the control module sends an instruction to the connected HDMI device through the HDMI input interface to query, or can be HDMI when the alternate HDMI device is activated. The input interface actively sends type information to the control module, and the control module associates and saves the type information of the HDMI input interface and the candidate HDMI device, so that the control module queries in subsequent operations. Of course, the manner of querying the type information is not limited thereto, and may be other query methods known to those skilled in the art.

103. When the type information of the alternative HDMI device is the same as the type information of the destination HDMI device, the signal on the HDMI input interface is output to the display module.

Specifically, when the type information of the candidate HDMI device is the same as the type information of the destination HDMI device, it indicates that the candidate HDMI device connected to the HDMI input interface of the current query is the HDMI selected by the user, and the signal on the HDMI input interface Output to the display module enables the correct device switching.

In the HDMI device switching method provided by this embodiment, when the user selects the desired destination HDMI device, only the button with the corresponding identifier on the remote controller needs to be pressed, and the remote controller can transmit the type information of the HDMI device carrying the destination. After receiving the signal, the control module queries the type information of the candidate HDMI device connected to the HDMI input interface, and then compares with the destination HDMI device type information in the control signal. When the same, the HDMI input interface is determined. The connected HDMI device is the HDMI device selected by the user, and then the signal on the HDMI input interface is output to the display module, thereby implementing the switching process. In this process, the user needs to complete the work only by pressing one on the remote controller. The button is very simple and quick to operate. In addition, the control module uses the type information of the HDMI device to determine the correct HDMI input interface connected to the destination HDMI device selected by the user, thereby ensuring the accuracy of the switching.

In the HDMI device switching method provided in this embodiment, when the type information of the candidate HDMI device is prefabricated in the candidate HDMI device, the specific implementation method of step 102 is as shown in FIG. 2, and includes the following sub-steps.

201. Send a type information query instruction to an alternative HDMI device connected to the HDMI input interface. 202. Receive a query result sent by an alternate HDMI device connected to the HDMI input interface, where the query result carries type information of an alternative HDMI device connected to the HDMI input interface.

This method provides quick and easy access to the type information of the optional HDMI device connected to the HDMI input.

In addition, in the HDMI device switching method provided by the embodiment, when the type information of the alternative HDMI device is different from the type information of the destination HDMI device, the HDMI input interface that has not been queried is also selected, and step 102 is performed. The complete HDMI device switching method will be described below with reference to Fig. 3, which includes the following steps.

301. Obtain a control signal sent by a remote controller, where the control signal carries type information of a destination HDMI device selected by the user, and sets an initial value of the natural number variable i, i to 1.

302. Send a type information query instruction to an alternative HDMI device connected to the i-th HDMI input interface.

303. Receive a query result sent by an alternative HDMI device connected to the i-th HDMI input interface, where the query result carries type information of an alternative HDMI device connected to the i-th HDMI input interface.

304. Determine whether the type information of the candidate HDMI device connected to the i-th HDMI input interface is the same as the type information of the destination HDMI device. If yes, go to step 307, otherwise go to step 305.

305, variable i plus 1.

306. Determine whether the variable i is greater than the total number of the HDMI input interfaces. If yes, the method ends. Otherwise, step 302 is performed.

Specifically, the variable i is greater than the total number of HDMI input interfaces, indicating that all HDMI input interfaces have been queried, and the HDMI device selected by the user is not found. In this case, the method needs to be ended, and some error handling programs may be set, for example, An error message similar to "The device was not found" is displayed on the display module.

307. Output a signal on the i-th HDMI input interface to the display module.

In this method, the total number of HDMI input interfaces that the control module has is fixed, variable i generation The table is the number of the HDMI input interface. After the inquiry operation of each HDMI input interface is finished, if it is judged that the candidate HDMI device connected to the interface is not the destination HDMI device selected by the user, the variable i is incremented by 1, and the steps are executed. 302. Perform a new round of inquiry operation on another unqueried HDMI input interface until the target HDMI device selected by the user is found. If all HDMI input interfaces have been queried and the destination HDMI device selected by the user is not found, then the method ends.

In the above HDMI device switching method, the type information of the destination HDMI device and the type information of the candidate HDMI device may both be 16-bit binary codes specified in the HDMI CEC (Customer Economic Control) protocol, and therefore, the above-mentioned preparation The type information of the selected HDMI device is the same as the type information of the destination HDMI device: The 16-bit binary code of the two types of information is the same. The following table lists the partial codes specified in the HDMI CEC protocol and their corresponding device names.

Table 1

The encoding specified by the HDMI CEC protocol facilitates the HDMI device switching method provided by the embodiment to be compatible with the HDMI CEC protocol.

Example 2

This embodiment provides an HDMI device switching method. As shown in FIG. 4, the method includes the following steps. The main body of the method is a remote controller, or other device that can control a control module that connects multiple HDMI devices.

401. Generate a control signal according to the button information pressed by the user, where the control signal carries type information of the HDMI device identified on the button.

402. Send the control signal to a control module that connects the plurality of HDMI devices, so that the control module outputs the signal on the identified HDMI device to the display module according to the type information. In the HDMI device switching method provided by this embodiment, since the user selects the required HDMI device, only the operation is performed according to the identifier on the button of the remote controller, and the remote controller can send the button with the corresponding identifier on the remote controller. After receiving the signal, the control module can output the signal on the identified HDMI device to the display module, thereby completing the switching process, which requires the user to complete the work. Just pressing a button on the remote control is very simple and quick. In addition, the control module outputs the signal on the identified HDMI device to the display module by using the type information of the HDMI device identified on the button, thereby ensuring the accuracy of the switching.

In the HDMI device switching method provided by this embodiment, the type information of the identified HDMI device may be a 16-bit binary code specified in the HDMI CEC protocol (see Table 1 in Embodiment 1). The encoding specified by the HDMI CEC protocol facilitates the HDMI device switching method provided by this embodiment to be compatible with the HDMI CEC protocol.

Example 3

The embodiment provides an HDMI device switching device. As shown in FIG. 5, the device includes: an acquiring unit 51, configured to acquire a control signal sent by a remote controller, where the control signal carries a type of a destination HDMI device selected by a user. The information Query unit 52 is configured to query the type information of the candidate HDMI device connected to the HDMI input interface; the output unit 53 is configured to query the type information of the candidate HDMI device and the destination HDMI device acquired by the obtaining unit 51. The type information is the same, and the signal on the HDMI input interface is output to the display module.

The query unit specifically includes: an instruction sending subunit 521, configured to send a type information query instruction to an alternate HDMI device connected to the HDMI input interface; a result obtaining subunit 522, configured to receive an alternate HDMI connected to the HDMI input interface The query result sent by the device, the query result carries the type information of the alternative HDMI device connected to the HDMI input interface.

In the HDMI device switching device provided in this embodiment, when the user selects the desired HDMI device, only a button with a corresponding identifier on the remote controller needs to be pressed, and the remote controller can transmit the type information of the HDMI device carrying the destination. Control signal, after the acquisition unit receives the signal, check The inquiry unit queries the type information of the candidate HDMI device connected to the HDMI input interface, and then the output unit compares the result of the query with the destination HDMI device type information in the control signal, and when the same, determines the device connected to the HDMI input interface. The HDMI device is selected as the HDMI device selected by the user, and then the signal on the HDMI input interface is output to the display module, thereby realizing the switching process. In this process, the user needs to complete the work only by pressing a button on the remote controller. It is very simple and fast. In addition, the device uses the type information of the HDMI device to determine the correct HDMI input interface connected to the destination HDMI device selected by the user, thereby ensuring the accuracy of the handover.

Example 4

The embodiment provides an HDMI device switching device. As shown in FIG. 6, the device includes: a button 61. The signal generating unit 62 is configured to generate a control signal according to the button information pressed by the user, where the control signal carries the button 61. The type information of the HDMI device identified above; the signal sending unit 63 is configured to send the control signal generated by the signal generating unit 62 to the control module of the HDMI device, so that the control module outputs the signal on the identified HDMI device according to the type information. To the display module.

In the HDMI device switching device provided in this embodiment, when the user selects the required HDMI device, only the operation on the button is required, and pressing a button with the corresponding identifier, the signal generating unit can generate the identifier on the carrying button. The control signal of the type information of the HDMI device, and then the signal transmitting unit can send the signal to the control module, and can output the signal on the identified HDMI device to the display module, thereby completing the switching process, which requires the user to complete the work. Just pressing a button on the remote control is very simple and quick. In addition, the control module outputs the signal on the identified HDMI device to the display module by using the type information of the HDMI device identified on the button, thereby ensuring the accuracy of the switching.

Example 5

The embodiment provides an HDMI device switching system. As shown in FIG. 7, the system includes: a remote controller 71, configured to generate a control signal according to the button information pressed by the user, where the control signal carries the HDMI device identified on the button. The type information, the control signal is sent to the control module of the HDMI device; the control module 72 is configured to acquire a control signal sent by the remote controller 71, where the control signal carries Type information of the HDMI device of the destination selected by the user, the type information of the HDMI device of the destination is the type information of the HDMI device identified on the button; and then querying the type information of the candidate HDMI device connected to the HDMI input interface; The type information of the HDMI device is the same as the type information of the destination HDMI device, and the signal on the HDMI input interface is output to the display module. The display module 73 is configured to display the signal output by the control module 72.

In the HDMI device switching system provided by this embodiment, since the user selects the required HDMI device, only the operation is performed according to the identifier on the button of the remote controller, and the remote controller can send the button with the corresponding identifier on the remote controller. After receiving the signal, the control module can output the signal on the identified HDMI device to the display module, thereby completing the switching process, which requires the user to complete the work. Just pressing a button on the remote control is very simple and quick. In addition, the control module outputs the signal on the identified HDMI device to the display module by using the type information of the HDMI device identified on the button, thereby ensuring the accuracy of the switching.

Through the description of the above embodiments, those skilled in the art can clearly understand that the present invention can be implemented by means of software plus necessary general hardware, and of course, by hardware, but in many cases, the former is a better implementation. . Based on such understanding, the technical solution of the present invention, which is essential or contributes to the prior art, may be embodied in the form of a software product stored in a readable storage medium, such as a floppy disk of a computer. A hard disk or optical disk or the like includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform the methods described in various embodiments of the present invention.

The above is only the specific embodiment of the present invention, but the scope of the present invention is not limited thereto, and any change or replacement that can be easily conceived by those skilled in the art within the technical scope of the present invention is All should be covered by the scope of the present invention. Therefore, the scope of protection of the present invention should be determined by the scope of the claims.

Claims

claims

1. An HDMI device switching method, characterized by including:

(1). Obtain the control signal sent by the remote control. The control signal carries the purpose selected by the user.

HDMI device type information;

(2) Query the type information of the alternative HDMI device connected to the HDMI input interface;

(3). When the type information of the candidate HDMI device is the same as the type information of the target HDMI device, the signal on the HDMI input interface is output to the display module.

2. The HDMI device switching method according to claim 1, wherein the type information of the candidate HDMI device is pre-prepared in the candidate HDMI device; and the query is for the candidate HDMI device connected to the HDMI input interface. The steps for type information include:

Send a type information query instruction to the alternative HDMI device connected to the HDMI input interface; receive the query result sent by the alternative HDMI device connected to the HDMI input interface, the query result carries the type of the alternative HDMI device connected to the HDMI input interface information.

3. The HDMI device switching method according to claim 1, further comprising: when the type information of the candidate HDMI device is different from the type information of the target HDMI device, selecting the HDMI device that has not been queried Enter the interface and perform step (2).

4. The HDMI device switching method according to any one of claims 1 to 3, characterized in that the type information of the target HDMI device and the type information of the candidate HDMI device are specified in the HDMI consumer electronics control protocol. The 16-bit binary code of the candidate HDMI device is the same as the type information of the destination HDMI device: the 16-bit binary code of the two types of information is the same.

5. An HDMI device switching method, characterized by including:

Generate a control signal based on the key information pressed by the user, and the control signal carries the type information of the HDMI device identified on the key;

Send the control signal to the control module of the HDMI device, so that the control module outputs the signal on the identified HDMI device to the display module according to the type information.

6. The HDMI device switching method according to claim 5, characterized in that: the HDMI The type information of the device is a 16-bit binary code specified in the HDMI consumer electronics control protocol.

7. An HDMI device switching device, characterized by including:

The acquisition unit is used to acquire the control signal sent by the remote control, where the control signal carries the type information of the destination HDMI device selected by the user;

A query unit, used to query the type information of the candidate HDMI device connected to the HDMI input interface; an output unit, when the type information of the candidate HDMI device queried by the query unit is consistent with the purpose obtained by the acquisition unit If the type information of the HDMI devices is the same, the signal on the HDMI input interface is output to the display module.

8. The HDMI device switching device according to claim 7, wherein the query unit includes:

The instruction sending subunit is used to send type information query instructions to the alternative HDMI device connected to the HDMI input interface;

The result acquisition subunit is configured to receive a query result sent by an alternative HDMI device connected to the HDMI input interface, where the query result carries type information of the alternative HDMI device connected to the HDMI input interface.

9. An HDMI device switching device, characterized by including:

button;

A signal generation unit configured to generate a control signal based on the key information pressed by the user, where the control signal carries the type information of the HDMI device identified on the key;

A signal sending unit, configured to send the control signal generated by the signal generating unit to the control module of the HDMI device, so that the control module outputs the signal on the identified HDMI device to the display module according to the type information. .

10. An HDMI device switching system, characterized by including:

A remote control, configured to generate a control signal based on the button information pressed by the user, the control signal carrying the type information of the HDMI device identified on the button, and then sending the control signal to the control module of the HDMI device; A control module configured to obtain a control signal sent by the remote control. The control signal carries the type information of the destination HDMI device selected by the user. The type information of the destination HDMI device is the type information of the HDMI device identified on the button. ; Then query the type information of the alternative HDMI device connected to the HDMI input interface; Finally, when the type information of the alternative HDMI device is the same as the type information of the destination HDMI device, the signal on the HDMI input interface is output to the display module;

A display module is used to display the signal output by the control module.