WO2016106751A1

WO2016106751A1 - Method and apparatus for achieving multimedia interface configuration

Info

Publication number: WO2016106751A1
Application number: PCT/CN2014/096063
Authority: WO
Inventors: 昝超; 唐启明; 周广荣; 成键
Original assignee: 华为技术有限公司
Priority date: 2014-12-31
Filing date: 2014-12-31
Publication date: 2016-07-07

Abstract

Provided are a method and apparatus for achieving multimedia interface configuration. The apparatus comprises: a processing unit, a multimedia input circuit, a multimedia output circuit and a multimedia interface connector. When it is determined that the multimedia input interface needs to be used, the processing unit controls an input channel connected to the multimedia interface connector via the multimedia input circuit to be in a switched-on state, and controls an output channel connected to the multimedia interface connector via the multimedia output circuit to be in a switched-off state. When it is determined that the multimedia output interface needs to be used, the processing unit controls the output channel to be in a switched-on state and controls the input channel to be in a switched-off state. Therefore, a certain interface can be used as an input interface or an output interface as needed, such that the phenomenon of co-existence of interface insufficiency and interface excess is avoided, thereby reducing the problems of data transmission delay and interface resource wastage in the prior art.

Description

Method and device for realizing multimedia interface configuration

Technical field

The present invention relates to the field of computer technologies, and in particular, to a method and apparatus for implementing a multimedia interface configuration.

Background technique

At present, the performance of various multimedia devices is becoming more and more powerful. In different scenarios, multiple input devices or multiple output devices can be connected at the same time. For example, in a large conference site, there are occasions where multiple input devices (such as cameras) need to be input to the video conference terminal through the input interface of the video conference terminal, and sometimes there is a need to pass the video conference terminal. The output interface connects the video conferencing terminal to multiple output devices (such as a display) simultaneously.

Due to the size of the interface panel, the number of input and output interfaces is limited. In the previous two scenarios, there are often two cases where the input (or output) interface is insufficient and the output (or input) interface is excessive. In the case of insufficient interfaces, it is generally possible to use a video and audio matrix to implement a limited interface for multiple devices, and there is a problem of data transmission delay caused by a shared interface. However, for an interface with excess interface, there is a problem of wasted interface resources.

Summary of the invention

The present invention provides a method and apparatus for implementing a multimedia interface configuration, which reduces the problem of data transmission delay and interface resource waste existing in the prior art.

In a first aspect, a multimedia device is provided, the multimedia device comprising:

a processing unit, a multimedia input circuit, a multimedia output circuit, and a multimedia interface connector, wherein the processing unit is connected to the multimedia interface connector through the multimedia input circuit, and is connected to the multimedia interface through the multimedia output circuit Connected

The processing unit is configured to control an input channel connected to the multimedia interface connector through the multimedia input circuit when determining a multimedia input interface to be used by the multimedia input circuit and the multimedia interface connector An output channel that is in an on state and controls connection with the multimedia interface connector through the multimedia output circuit is in an off state, and is determined to be used When the multimedia output circuit and the multimedia interface connector form a multimedia output interface, the output channel is controlled to be in an on state, and the input channel is controlled to be in an off state.

In a first possible implementation manner of the first aspect, the processing unit is specifically configured to: when detecting that the device connected to the multimedia interface connector is an input device, determine to use the multimedia input circuit and the The multimedia input interface formed by the multimedia interface connector determines a multimedia output interface formed by using the multimedia output circuit and the multimedia interface connector when detecting that the device connected to the multimedia interface is an output device.

With reference to the first possible implementation manner of the first aspect, in a second possible implementation manner, the multimedia device further includes a first power feeding chip; the multimedia interface connector includes a feeding pin and hot plugging Detecting a pin; the processing unit includes a first detecting pin and a second detecting pin;

a feeding pin of the multimedia interface connector is respectively connected to the first detecting pin of the processing unit and the first feeding chip,

The hot plug detection pin of the multimedia interface connector is connected to the second detection pin of the processing unit, and is grounded through the first resistor;

The processing unit is specifically configured to: when the level of the feed pin is detected as being high by the first detection pin under the condition that the feed pin is controlled to be in a power-off state, The device connected to the multimedia interface connector is an output device, and the level of the hot plug detection pin is detected by the second detecting pin when the feeding pin is controlled to be in a charged state. When the state is high, it is determined that the device connected to the multimedia interface connector is an input device.

In conjunction with the second possible implementation of the first aspect, in a third possible implementation, the processing unit is specifically configured to:

Controlling that the feed pin is in a charged state, and detecting a level state of the hot plug detection pin through the second detection pin, and detecting that a level state of the hot plug detection pin is When the level is high, determining that the device connected to the multimedia interface connector is an input device, and detecting the hot plugging Controlling that the feed pin is turned off when the level state of the pin is low, and detecting the level state of the feed pin by the first detection pin, when the feed is detected Determining that the device connected to the multimedia interface connector is an output device when the level of the power pin is high; or

Controlling that the feed pin is in a power-off state, and detecting a level state of the feed pin through the first detection pin, and detecting that a level state of the feed pin is a high level Determining that the device connected to the multimedia interface connector is an output device, and controlling the feeding pin to be in a charged state and passing the second when detecting that a level state of the feeding pin is a low level The detecting pin detects a level state of the hot plug detecting pin, and determines that the device connected to the multimedia interface connector is an input device when detecting that the level state of the hot plug detecting pin is a high level .

In conjunction with the second or third possible implementation of the first aspect, in a fourth possible implementation, the multimedia device further includes a first switch, the first switch being serially connected to the feed tube Between the foot and the first feed chip;

The processing unit is configured to control the feeding pin to be in a charged state, and specifically includes: the processing unit, configured to control the first switch to be closed;

The processing unit is configured to control the powering pin to be in a power-off state, and specifically includes: the processing unit, configured to control the first switch to be disconnected.

With reference to the second or third possible implementation manner of the first aspect, in a fifth possible implementation, the processing unit is configured to control the feeding pin to be in a charging state, specifically: the processing a unit, configured to send an enable signal to the first feed chip, so that the first feed chip supplies power to the feed pin; and the processing unit is configured to control the feed pin to be off The electrical state includes: the processing unit, configured to send a shutdown enable signal to the first feed chip, so that the first feed chip does not supply power to the feed pin.

With reference to any one of the second to fifth possible implementations of the first aspect, in a sixth possible implementation, the multimedia device further includes a second power feeding chip and a second switch, wherein the heat The plug detection pin is connected to the second feed chip, and the second switch is connected in series between the hot plug detection pin and the first resistor;

The processing unit is further configured to: when detecting a level state of the hot plug detection pin and the feed pin, control the hot plug detection pin to be in a power off state and control the second The switch is in a closed state, and when it is determined that the device connected to the multimedia interface connector is an input device, maintaining a power-off state of the hot-plug detection pin and maintaining a closed state of the second switch; When the device connected to the multimedia interface connector is an output device, the hot plug detection pin is controlled to be in a powered state and the second switch is turned off.

In a seventh possible implementation manner of the first aspect, the multimedia device further includes a user operation interface unit;

The user operation interface unit is configured to provide a configuration interface for configuring a multimedia interface, and generate a user operation instruction according to a configuration operation of the user on the configuration interface, and send the user operation instruction to the processing unit;

The processing unit is specifically configured to parse the user operation instruction to determine a multimedia input interface to be used by using the multimedia input circuit and the multimedia interface connector or to use the multimedia output circuit and the multimedia interface A multimedia output interface formed by a connector.

With reference to the first aspect, any one of the first to seventh possible implementations of the first aspect, in an eighth possible implementation, the processing unit is configured to control a pass with the multimedia interface connector The input channel connected to the multimedia input circuit is in an on state, and controls an output channel connected to the multimedia interface connector through the multimedia output circuit to be in an off state, and specifically includes: the processing unit is configured to control The multimedia input circuit is in a power supply state, and the multimedia output circuit is in a power off state;

The processing unit is configured to control the output channel to be in an on state and control the input channel to be in an off state, and specifically, the processing unit is configured to control the multimedia input circuit to be in a power off state, and the multimedia The output circuit is in a power supply state.

In conjunction with the eighth possible implementation of the first aspect, in a ninth possible implementation, the multimedia device further includes a power supply serially connected to the multimedia input circuit and the multimedia input circuit a first power switch, and a serial connection for providing the multimedia output circuit a second power switch between the electrical power source and the multimedia output circuit;

The processing unit is configured to control the multimedia input circuit to be in a power supply state, and the multimedia output circuit is in a power-off state, specifically, the processing unit is configured to control the first power switch to be closed and control the second power source The switch is turned off;

The processing unit is configured to control the multimedia input circuit to be in a power-off state, and the multimedia output circuit is in a power supply state, specifically, the processing unit is configured to control the first power switch to be turned off and control the second The power switch is closed.

With reference to the eighth possible implementation manner of the first aspect, in a tenth possible implementation, the processing unit is configured to control that the multimedia input circuit is in a power supply state, and the multimedia output circuit is in a power-off state, specifically The processing unit is configured to send an enable signal to a first power source for powering the multimedia input circuit, so that the first power source supplies power to the multimedia input circuit, and is used for the multimedia a second power supply that is powered by the output circuit transmits a shutdown enable signal such that the second power supply does not supply power to the multimedia output circuit;

The processing unit is configured to control the multimedia input circuit to be in a power-off state, and the multimedia output circuit is in a power supply state, and specifically includes: the processing unit, configured to send a shutdown enable signal to the first power source, so that The first power source does not supply power to the multimedia input circuit, and sends an enable signal to the second power source to enable the second power source to supply power to the multimedia output circuit.

With reference to the first aspect, any one of the first to seventh possible implementations of the first aspect, in the eleventh possible implementation, the multimedia device further includes a first switch;

The multimedia input circuit and the multimedia output circuit are connected to the multimedia interface connector by the first switch, wherein the first pin, the second pin, and the third pin of the first switch Connected to the multimedia input circuit, the multimedia output circuit, and the multimedia interface connector, respectively;

The processing unit is configured to control an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and control connection with the multimedia interface connector through the multimedia output circuit The output channel is in an off state, and specifically includes: the processing order The element is configured to control the first switch to turn on a line between the first pin and the third pin, and disconnect a line between the second pin and the third pin ;

The processing unit is configured to control the output channel to be in an on state and control the input channel to be in an off state, and the method further includes: the processing unit is configured to control the first switch to disconnect the first tube a line between the foot and the third pin and a line between the second pin and the third pin.

With reference to the eleventh possible implementation of the first aspect, in a twelfth possible implementation, the multimedia device further includes a second switch;

The multimedia input circuit and the multimedia output circuit are connected to the processing unit by the second switch, wherein the first pin, the second pin, and the third pin of the second switch respectively The multimedia input circuit, the multimedia output circuit and the processing unit are connected;

The processing unit is configured to control an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and control connection with the multimedia interface connector through the multimedia output circuit The output channel is in an off state, and the method further includes: the processing unit is configured to control the second switch to turn on a line between the first pin and the third pin, and disconnect the first a line between the two pins and the third pin;

The processing unit is configured to control the output channel to be in an on state and control the input channel to be in an off state, and specifically, the processing unit is configured to control the switch to disconnect the first pin And a line between the third pin and a line between the second pin and the third pin.

A second aspect provides an access device detecting apparatus, where the detecting device includes: a detecting unit and a feeding chip, wherein the detecting unit includes a first detecting pin and a second detecting pin, wherein The first detecting pin and the feeding chip of the detecting unit are connected to the feeding pin of the multimedia interface connector to be detected, and the hot plug detecting pin of the multimedia interface connector to be detected and the detecting unit The second detection pin is connected and grounded through a resistor;

The detecting unit is configured to pass through the control unit under the condition that the feeding pin is in a power-off state When the first detecting pin detects that the level of the feeding pin is high, determining that the device connected to the multimedia interface connector is an output device, when controlling the feeding pin to be in a charged state The device connected to the multimedia interface connector is determined to be an input device when the level of the hot plug detection pin is detected to be a high level by the second detecting pin.

In a first possible implementation manner of the second aspect, the detecting unit is specifically configured to:

Controlling that the feed pin is in a charged state, and detecting a level state of the hot plug detection pin through the second detection pin, and detecting that a level state of the hot plug detection pin is Determining, when the level is high, determining that the device connected to the multimedia interface connector is an input device, and controlling the feed pin to be powered off when detecting that the level state of the hot plug detection pin is low And detecting, by the first detecting pin, a level state of the feeding pin, and determining that the device connected to the multimedia interface connector is when detecting that the level state of the feeding pin is a high level Output device; or,

With the second aspect or the first possible implementation of the second aspect, in a second possible implementation, the access device detecting apparatus further includes a first switch, the first switch is connected in series Between the feed pin and the feed chip;

The detecting unit is configured to control the feeding pin to be in a charged state, and specifically includes: the detecting unit, configured to control the first switch to be closed;

The detecting unit is configured to control the feeding pin to be in a power-off state, and specifically includes: the detecting unit, configured to control the first switch to be disconnected.

With reference to the second aspect, or the first possible implementation manner of the second aspect, in a third possible implementation, the detecting unit is configured to control the feeding pin to be in a charging state, and specifically includes: The detecting unit is configured to send an enable signal to the power feeding chip, so that the power feeding chip supplies power to the power feeding pin;

The detecting unit is configured to control the feeding pin to be in a power-off state, and specifically includes: the detecting unit, configured to send a shutdown enable signal to the feeding chip, so that the feeding chip is not in use The feed pin is powered.

A third aspect provides a method for implementing a multimedia interface configuration, where the method is applied to a multimedia device, where the multimedia device includes: a processing unit, a multimedia input circuit, a multimedia output circuit, and a multimedia interface connector, wherein the processing The unit is connected to the multimedia interface connector through the multimedia input circuit, and is connected to the multimedia interface connector through the multimedia output circuit; the method includes:

The processing unit controls the input channel connected to the multimedia interface connector through the multimedia input circuit to be turned on when determining that the multimedia input interface formed by the multimedia input circuit and the multimedia interface connector is to be used a state, and controlling an output channel connected to the multimedia interface connector through the multimedia output circuit to be in an off state, when determining a multimedia output interface to be used by the multimedia output circuit and the multimedia interface connector And controlling the output channel to be in an on state and controlling the input channel to be in an off state.

In a first possible implementation manner of the third aspect, the method further includes: when the detecting unit detects that the device connected to the multimedia interface connector is an input device, determining that the multimedia input circuit is to be used And a multimedia input interface formed by the multimedia interface connector, when detecting that the device connected to the multimedia interface is an output device, determining a multimedia output interface to be used by using the multimedia output circuit and the multimedia interface connector.

With reference to the first possible implementation manner of the third aspect, in a second possible implementation manner, the multimedia device further includes a first power feeding chip, the multimedia interface connector includes a feeding pin, and the hot plug Detecting a pin; the processing unit includes a first detecting pin and a second detecting pin, and the feeding pin of the multimedia interface connector is respectively connected to the first detecting pin of the processing unit and the first feed The electrical chip is connected, the hot plug detection pin of the multimedia interface connector and the second check of the processing unit The test pins are connected and grounded through a first resistor; the method further includes:

Determining that the multimedia interface connector is connected when it is detected that the level of the feed pin is high by the first detection pin under the condition that the feed pin is in a power-off state. The device is an output device, and when the level of the hot plug detection pin is detected as being high by the second detection pin under the condition that the feed pin is controlled to be in a charged state, The device to which the multimedia interface connector is connected is an input device.

In conjunction with the second possible implementation of the third aspect, in a third possible implementation, the detecting is performed by the first detecting pin when the power feeding pin is in a power-off state When the level of the feed pin is high, determining that the device connected to the multimedia interface connector is an output device, and passing the first condition while controlling the feed pin to be in a charged state When the detection pin detects that the level of the hot plug detection pin is high, determining that the device connected to the multimedia interface connector is an input device, specifically includes:

In conjunction with the second or third possible implementation of the third aspect, in a fourth possible implementation, the multimedia device further includes a first switch, the first switch being connected in series with the feed tube Foot And the first feed chip;

The processing unit controls the feeding pin to be in a charged state, and specifically includes: the processing unit controls the first switch to be closed;

The processing unit controls the feeding pin to be in a power-off state, and specifically includes: the processing unit controls the first switch to be disconnected.

In conjunction with the second or third possible implementation of the third aspect, in a fifth possible implementation, the multimedia device further includes a second power feeding chip and a second switch, where the hot plug The detecting pin is connected to the second feeding chip, and the second switch is connected in series between the hot plug detecting pin and the first resistor; the method further includes:

The processing unit controls the hot plug detection pin to be in a power off state and control the second switch to be in a closed state when detecting a level state of the hot plug detection pin and the feed pin And determining that the device connected to the multimedia interface connector is an input device, maintaining a power-off state of the hot-plug detection pin and maintaining a closed state of the second switch; determining the multimedia interface connector When the connected device is an output device, the hot plug detection pin is controlled to be in a powered state and the second switch is turned off.

With reference to the third aspect, any one of the first to fifth possible implementation manners of the third aspect, in a sixth possible implementation manner,

The processing unit controls to control an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and to control an output connected to the multimedia interface connector through the multimedia output circuit The channel is in an off state, and the method includes: the processing unit controls the multimedia input circuit to be in a power supply state, and the multimedia output circuit is in a power-off state;

The processing unit controls the output channel to be in an on state and control the input channel to be in an off state, and specifically includes: the processing unit controls the multimedia input circuit to be in a power off state, and the multimedia output circuit is powered status.

In conjunction with the sixth possible implementation of the third aspect, in a seventh possible implementation, The multimedia device further includes a first power switch connected in series between a power source for powering the multimedia input circuit and the multimedia input circuit, and a power source and a serial connection for powering the multimedia output circuit a second power switch between the multimedia output circuits;

The processing unit controls the multimedia input circuit to be in a power supply state, and the multimedia output circuit is in a power-off state, specifically: the processing unit controls the first power switch to be closed and controls the second power switch to be turned off;

The processing unit controls the multimedia input circuit to be in a power-off state, and the multimedia output circuit is in a power supply state, and specifically includes: the processing unit controls the first power switch to be turned off and the second power switch to be closed.

With reference to the third aspect, any one of the first to fifth possible implementation manners of the third aspect, in the eighth possible implementation, the multimedia device further includes a first switch;

The processing unit controls to control an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and to control an output connected to the multimedia interface connector through the multimedia output circuit The channel is in an off state, and the method includes: the processing unit controls the first switch to turn on a line between the first pin and the third pin, and disconnect the second pin and a line between the third pins;

The processing unit controls the output channel to be in an on state and control the input channel to be in an off state, and specifically includes: the processing unit controls the first switch to disconnect the first pin and the a line between the third pins and a line between the second pin and the third pin.

In conjunction with the eighth possible implementation of the third aspect, in a ninth possible implementation, the multimedia device further includes a second switch;

The multimedia input circuit and the multimedia output circuit pass the second switch and the The processing unit is connected, wherein the first pin, the second pin, and the third pin of the second switch are respectively connected to the multimedia input circuit, the multimedia output circuit, and the processing unit;

The processing unit controls to control an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and to control an output connected to the multimedia interface connector through the multimedia output circuit The channel is in an off state, and the method further includes: the processing unit controls the second switch to turn on a line between the first pin and the third pin, and disconnect the second pin And a line between the third pin;

The processing unit controls the output channel to be in an on state and control the input channel to be in an off state, and specifically includes: the processing unit controls the switch to disconnect the first pin and the first A line between the three pins and a line between the second pin and the third pin.

A fourth aspect provides a method for implementing detection of an access device, where the method is applied to an access device detecting device, where the detecting device includes: a detecting unit and a feeding chip, and the detecting unit includes the first a detecting pin and a second detecting pin, wherein the first detecting pin of the detecting unit and the feeding chip are both connected to a feeding pin of the multimedia interface connector to be detected, and the multimedia interface to be detected is connected The hot plug detection pin of the device is connected to the second detecting pin of the detecting unit and grounded through a resistor; the method includes:

Determining, by the detecting unit, when the level of the feeding pin is high by the first detecting pin under the condition that the feeding pin is in a power-off state, determining the multimedia interface The device connected to the connector is an output device, and when the control pin is in a charged state, the level of the hot plug detection pin is detected as high by the second detecting pin. Usually, it is determined that the device to which the multimedia interface connector is connected is an input device.

In a first possible implementation manner of the fourth aspect, the detecting, by the first detecting pin, detecting the power of the feeding pin when controlling the feeding pin to be in a power-off state When the flat state is high level, determining that the device connected to the multimedia interface connector is an output device, and detecting the heat through the second detecting pin when controlling the feeding pin to be in a charged state When the level of the plug detection pin is high, it is determined that the device connected to the multimedia interface connector is Input devices, including:

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a second possible implementation, the access device detecting apparatus further includes a first switch, the first switch is connected in series Between the feed pin and the feed chip;

The detecting unit controls the feeding pin to be in a charged state, and specifically includes: the detecting unit controls the first switch to be closed;

The detecting unit controls the feeding pin to be in a power-off state, and specifically includes: the detecting unit controls the first switch to be disconnected.

With reference to the fourth aspect, or the first possible implementation manner of the fourth aspect, in a third possible implementation, the detecting unit is configured to control the feeding pin to be in a charging state, specifically, the detecting unit is The power feeding chip sends an enable signal to enable the power feeding chip to supply power to the power feeding pin. The detecting unit controls the powering pin to be in a power-off state, and specifically includes: the detecting unit The feed chip sends a shutdown enable signal such that the feed chip does not supply power to the feed pin.

According to the embodiment of the present invention, an interface on the multimedia device can be used as an input interface or an output interface (that is, the interface is configured as an input interface or an output interface), and therefore, in a specific usage scenario, According to specific needs, one or some interfaces of the multimedia device are used as an input interface, and another interface or some interfaces are used as an output interface, thereby avoiding the phenomenon that the interface is insufficient and the interface is excessive, and the existing one is reduced. The problem of data transmission delay and interface resource waste in technology.

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 embodiments or the description of the prior art will be briefly described below. Obviously, the drawings in the following description are only It is a certain embodiment of the present invention, and other drawings can be obtained from those skilled in the art without any creative work.

FIG. 1 is a schematic structural diagram of a multimedia device 100 according to Embodiment 1 of the present invention;

FIG. 2 is a schematic structural diagram of a multimedia device 100 according to an exemplary embodiment of Embodiment A of Embodiment 1 of the present invention;

FIG. 4 is a schematic structural diagram of a multimedia device 100 according to Embodiment B of Embodiment 1 of the present invention;

FIG. 5 is a schematic structural diagram of a multimedia device 100 according to an exemplary embodiment of Embodiment N of Embodiment 1 of the present invention;

6-1 and 6-2 are schematic flowcharts of a method for detecting a process performed by the processing unit 110 according to Embodiment 1 of the present invention;

FIG. 7 is a schematic structural diagram of a multimedia device 100 according to another exemplary embodiment of Embodiment N of Embodiment 1 of the present invention;

FIG. 8 is a schematic structural diagram of an access device detecting apparatus 200 according to Embodiment 2 of the present invention.

detailed description

In order to make the objects, technical solutions and advantages of the present invention more clear, the present invention will be described below with reference to the accompanying drawings. The embodiments are described in further detail.

FIG. 1 is a schematic structural diagram of a multimedia device 100 according to Embodiment 1 of the present invention. The multimedia device 100 includes a processing unit 110, a multimedia input circuit 120-1, a multimedia output circuit 120-2, and a multimedia interface connector 130. The processing unit 110 is connected to the multimedia interface connector 130 through the multimedia input circuit 120-1, and is connected to the multimedia interface connector 130 through the multimedia output circuit 120-2.

The multimedia device 100 may specifically be a video conference terminal and a mixing console.

In the first embodiment of the present invention, the multimedia input circuit 120-1 and the multimedia interface connector 130 constitute a multimedia input interface, and the multimedia output circuit 120-2 and the multimedia interface connector 130 constitute a multimedia output interface.

The multimedia input interface and/or the multimedia output interface may specifically be a High Definition Multimedia Interface (HDMI), a Digital Visual Interface (DVI), a Display Interface (DP), or the like. .

For example, the multimedia input circuit 120-1 may be an ADV7441 chip. Accordingly, the multimedia input interface formed by the multimedia input circuit 120-1 and the multimedia interface connector 130 may be an HDMI interface or a DVI interface; the multimedia output circuit 120-2 may For the SIi9136 chip, correspondingly, the multimedia output circuit 120-2 and the multimedia interface connector 130 constitute a multimedia output interface which may be an HDMI interface or a DVI interface.

The processing unit 110 is configured to control, when determining to use the multimedia input interface formed by the multimedia input circuit 120-1 and the multimedia interface connector 130, the input channel connected to the multimedia interface connector 130 through the multimedia input circuit 120-1 Turning on the state, and controlling the output channel connected to the multimedia interface connector 130 through the multimedia output circuit 120-2 to be in an off state, determining the multimedia output to be used by the multimedia output circuit 120-2 and the multimedia interface connector 130 In the interface, the output channel is controlled to be in an on state, and the input channel is controlled to be in an off state.

In a case where the input channel is controlled to be in an on state and the output channel is controlled to be in an off state, the processing unit 110 may receive multimedia data (such as video data) transmitted by the device connected to the multimedia interface connector 140 through the input channel. , audio data), not through the output The device transmits multimedia data to the device connected to the multimedia interface connector 140, that is, the multimedia input interface formed by the multimedia input circuit 120-1 and the multimedia interface connector 130 is in an available state, and the multimedia output circuit 120-2 and the multimedia interface connector 130 constitute The multimedia output interface is in an unavailable state. In this case, the interface is configured as a multimedia input interface.

Similarly, in the case of controlling the input channel to be in an off state and controlling the output channel to be in an on state, the multimedia input interface formed by the multimedia input circuit 120-1 and the multimedia interface connector 130 is in an unavailable state, multimedia The multimedia output interface formed by the output circuit 120-2 and the multimedia interface connector 130 is in an available state. In this case, the interface is configured as a multimedia output interface.

It should be noted that the multimedia device 100 often includes a plurality of interface connectors, each of which has a multimedia input circuit and a multimedia output circuit. According to the method of Embodiment 1 of the present invention, a certain or a certain These interfaces are configured as input or output interfaces. For example, the multimedia device 100 is a video conference terminal, and includes five interfaces. In a conference, four cameras and one display need to be connected, and four interfaces can be configured as an input interface, and the other interface is configured as an output. Interface: In another conference, you need to connect two cameras and two monitors. You can configure two of them as input interfaces and configure two interfaces as output interfaces. One interface does not need to be configured.

In a specific implementation, the processing unit 110 may be implemented by a processor, may be implemented by a peripheral circuit of the processor, or may be implemented by a combination of a processor and a peripheral circuit. If implemented by a processor, the processor, for executing computer operation instructions stored in a memory of the processor or multimedia device 100, performs the determining operation and the control operation described above.

According to the embodiment 1 of the present invention, an interface on the multimedia device 100 can be used as an input interface or an output interface (that is, the interface is configured as an input interface or an output interface), and therefore, in a specific usage scenario. One or some interfaces of the multimedia device 100 can be used as an input interface according to specific needs, and another interface or some interfaces can be used as an output interface, thereby avoiding the phenomenon that the interface is insufficient and the interface is excessive. The problem of data transmission delay and interface resource waste existing in the prior art.

The specific implementation manner in which the processing unit 110 controls the input channel and the output channel to be in an on/off state is described below by Embodiments A and B, respectively.

Embodiment A: The processing unit 110 controls the input channel to be in an on state by controlling the multimedia input circuit 120-1 to be in a power supply state, and controls the output channel to be controlled by controlling the multimedia output circuit 120-2 to be in a power off state. Disconnected state. Similarly, controlling the input channel to be in an off state by controlling the multimedia input circuit 120-1 to be in a power-off state, and controlling the output channel to be in an on state by controlling the multimedia output circuit 120-2 to be in a power supply state.

An example embodiment of an embodiment A is shown in FIG.

As shown in FIG. 2, the multimedia device 100 further includes a power switch 140-1 connected in series between the power supply and multimedia input circuit 120-1 for powering the multimedia input circuit 120-1, and serially connected for use in multimedia. The power switch 140-2 between the power source supplied by the output circuit 120-2 and the multimedia output circuit 120-2. The power source for powering the multimedia input circuit 120-1 and the power source for powering the multimedia output circuit 120-2 may be the same power source or different power sources.

In this example embodiment, when it is determined that the multimedia input interface composed of the multimedia input circuit 120-1 and the multimedia interface connector 130 is to be used, the processing unit 110 controls the power switch 140-1 to be closed, and controls the power switch 140-2 to be turned off. Similarly; when it is determined that the multimedia output interface composed of the multimedia output circuit 120-2 and the multimedia interface connector 130 is to be used, the control power switch 140-1 is turned off, and the power switch 140-2 is controlled to be closed.

In another example embodiment of the embodiment A, when determining the multimedia input interface formed using the multimedia input circuit 120-1 and the multimedia interface connector 130, the processing unit 110 supplies the power for the multimedia input circuit 120-1. a power transmission enable signal to cause the first power source to supply power to the multimedia input circuit 120-1, and to send a shutdown enable signal to the second power source for powering the multimedia output circuit 120-2 to enable the The two power supplies do not supply power to the multimedia output circuit 120-2. Similarly, when determining the multimedia output interface formed by the multimedia output circuit 120-2 and the multimedia interface connector 130, the processing unit 110 sends a shutdown enable signal to the first power source, so that the first power source is not multimedia. The input circuit 120-1 supplies power and transmits an enable signal to the second power source to cause the second power source to supply power to the multimedia output circuit 120-2.

Embodiment B: Switching between the input circuit and the output circuit by a switch.

As shown in FIG. 3, the multimedia device 100 further includes a switch 150; the multimedia input circuit 120-1 and the multimedia output circuit 120-2 are connected to the multimedia interface connector 130 through the switch 150, wherein the first pin of the switch 150 The second pin and the third pin are respectively connected to the multimedia input circuit 120-1, the multimedia output circuit 120-2, and the multimedia interface connector 130.

When determining that the multimedia input interface formed by the multimedia input circuit 120-1 and the multimedia interface connector 130 is to be used, the processing unit 110 controls the switch 150 to turn on between the first pin and the third pin. Line and disconnect the line between the second pin and the third pin. Similarly, when determining to use the multimedia output interface formed by the multimedia output circuit 120-2 and the multimedia interface connector 130, the processing unit 110 controls the switch 150 to disconnect between the first pin and the third pin. And connecting the line between the second pin and the third pin.

Further, as shown in FIG. 4, the multimedia device 100 may further include a switch 160; the multimedia input circuit 120-1 and the multimedia output circuit 120-2 are connected to the processing unit 110 through the switch 160, wherein the switch 160 is first The pin, the second pin, and the third pin are respectively connected to the multimedia input circuit 120-1, the multimedia output circuit 120-2, and the processing unit 110.

When determining that the multimedia input interface formed by the multimedia input circuit 120-1 and the multimedia interface connector 130 is to be used, the processing unit 110 also controls the switch 160 to turn on the line between the first pin and the third pin. And disconnecting the line between the second pin and the third pin. Similarly, when determining to use the multimedia output interface formed by the multimedia output circuit 120-2 and the multimedia interface connector 130, the processing unit 110 also controls the switch to disconnect the first pin and the third pin. Between the lines and the line between the second pin and the third pin.

In a specific implementation, the switch 150 and the switch 160 may specifically be a relay, a multi-channel signal switching chip, or the like.

It should be noted that, in a specific implementation, the processing unit 110 may be specifically divided into a circuit control subunit and a multimedia processing subunit. Correspondingly, the input channel and the output channel are the multimedia The transmission channel between the body processing unit and the multimedia interface connector 130, that is, the specific connection relationship, is that the multimedia processing unit is connected to the multimedia interface connector 130 through the multimedia input circuit 120-1, and passes through the multimedia output circuit 120-2. Connected to the multimedia interface connector 130. The circuit control subunit is specifically configured to control the on and off of the input channel and the output channel, such as controlling the on and off of the power switch 140-1 and the power switch 140-2, and also for controlling the input to be turned on. After the channel is disconnected from the output channel, the multimedia processing subunit is notified to use the multimedia input interface, and after the input channel is disconnected and the output channel is turned on, the multimedia processing subunit is notified that the multimedia processing subunit can The multimedia output interface is used. Receiving, by the multimedia processing subunit, the multimedia data sent by the device connected to the multimedia interface connector 140 through the input channel after receiving the notification that the multimedia input interface is available; the multimedia processing subunit receives After the notification of the multimedia output interface is used, the multimedia data is prepared to be transmitted to the device connected to the multimedia interface connector 140 through the output channel.

In a specific implementation, the circuit control sub-unit may be implemented by a processor, may be implemented by a peripheral circuit of the processor, or may be implemented by a combination of a processor and a peripheral circuit. The multimedia processing sub-unit can also be implemented in the above three forms. The manner implemented by the processor, in particular, is performed by the processor to perform a corresponding operation performed by the computer operation instruction stored in the memory of the processor or the multimedia device 100.

In Embodiment 1 of the present invention, the processing unit 110 may determine, in various manners, that the multimedia input interface or the multimedia output interface is to be used. In the following, the two methods of determining the manual setting and the automatic detecting are respectively introduced by the embodiment M and the embodiment N.

Embodiment M: Manual setting mode.

In Embodiment M, the multimedia device 100 further includes a user operation interface unit. The user operation interface unit is configured to provide a configuration interface for configuring a multimedia interface, and generate a user operation instruction according to a configuration operation of the user on the configuration interface, and send the user operation instruction to the processing unit 110. Correspondingly, the processing unit 110 parses the user operation instruction to determine a multimedia input interface to be used by the multimedia input circuit 120-1 and the multimedia interface connector 130 or to use A multimedia output interface formed by the multimedia output circuit 120-2 and the multimedia interface connector 130. In a specific implementation, the configuration interface may present an option to the user to configure a multimedia input interface or a multimedia output interface, and generate the user operation instruction according to the user's selection.

Embodiment N: Automatic detection method.

In the embodiment N, when detecting that the device connected to the multimedia interface connector 130 is an input device, the processing unit 110 determines that the multimedia input interface to be formed by using the multimedia input circuit 120-1 and the multimedia interface connector 130 is detected. When the device connected to the multimedia interface is an output device, the multimedia output interface formed by the multimedia output circuit 120-2 and the multimedia interface connector 130 is determined.

An example embodiment of an embodiment N is shown in FIG.

As shown in FIG. 5, the multimedia device 100 further includes a feed chip 170-1. The multimedia interface connector 130 includes a feed pin and a hot plug detection pin. The processing unit 110 includes a first detection pin and a second detection tube. The feed pins of the multimedia interface connector 130 are respectively connected to the first detection pin of the processing unit 110 and the feed chip 170-1, and the hot plug detection (HPD) pin of the multimedia interface connector 130 is connected. It is connected to the second detecting pin of the processing unit 110 and is grounded through the first resistor. The power feeding chip 170-1 is configured to supply power to the feeding pin. The resistance value of the first resistor is preferably 500 ohms or more.

The processing unit 110 is specifically configured to determine the multimedia when the level of the feed pin is detected to be a high level by the first detection pin under the condition that the feed pin is controlled to be in a power-off state. The device connected to the interface connector 130 is an output device. When the control pin is in a charged state, the level of the hot plug detection pin is detected by the second detection pin. When the level is high, it is determined that the device connected to the multimedia interface connector 130 is an input device.

In addition, the processing unit 110 may be further configured to: when the control pin is in a power-off state, detecting that the level of the feed pin is a low level by using the first detection pin. And determining, by the second detecting pin, that the level state of the hot plug detecting pin is low when the feeding pin is in a charged state, determining that the multimedia interface connector 130 is not connected device.

In a specific implementation, if the detecting function of the processing unit 110 is implemented by a processor, the first detecting pin and the second detecting pin are two input pins of the processor; and the detecting of the processing unit 110 The function may also be implemented by a peripheral circuit of the processor, and correspondingly, the first detection pin and the second detection pin are two pins of the peripheral circuit.

A detection process performed by the processing unit 110 is as shown in FIG. 6-1, and includes:

S101: The processing unit 110 controls the feeding pin to be in a charged state.

S102-S104: The processing unit 110 detects a level state of the hot plug detection pin by using the second detection pin (S102), and detects that the level state of the hot plug detection pin is high. Usually, it is determined that the device connected to the multimedia interface connector 130 is an input device (S103), and when the level state of the hot plug detection pin is detected to be a low level, the feed pin is controlled to be in a power-off state ( S104) and execute S105.

S105-S107: The processing unit 110 detects a level state of the feed pin through the first detection pin (S105), and determines a multimedia interface when detecting that the level state of the feed pin is a high level The device to which the connector 130 is connected is an output device (S106), and it is determined that the multimedia interface connector 130 is not connected to the device when it is detected that the level state of the feed pin is low (S107).

After S107, S101 is re-executed to start the next round of detection.

A detection process performed by the processing unit 110 is as shown in FIG. 6-2, and includes:

S201: The processing unit 110 controls the feed pin to be in a power-off state.

S202-S204: The processing unit 110 detects a level state of the feed pin by the first detection pin detection (S202), and determines a multimedia when detecting that the level state of the feed pin is a high level. The device to which the interface connector 130 is connected is an output device (S203), and when the level state of the feed pin is detected to be low, the feed pin is controlled to be in a charged state (S204) and S205 is executed.

S205-S207: The processing unit 110 detects a level state of the hot plug detection pin by using the second detection pin (S205), and detects that the level of the hot plug detection pin is high. Usually, it is determined that the device connected to the multimedia interface connector 130 is an input device (S206), and is detected When the level state of the hot plug detection pin is low, it is determined that the multimedia interface connector 130 is not connected to the device (S207).

After S207, S201 is re-executed to start the next round of detection.

The above detection process may be periodic until it is detected that the multimedia interface connector 130 is connected to the device. For example, after each execution of S107, S101 is started to start the next round of detection for a certain period of time (such as 1 second); for example, the feeding pin is controlled to be charged or at a certain time interval (such as 0.5 seconds). The power-off state is performed, and a corresponding detection process is performed, for example, S101 is executed at 5th second, S104 is executed at 5.5th second, and S101 is executed at 6th second to start the next round of detection.

The processing unit 110 can control the charging/de-energizing state of the feeding pin by different methods.

An optional implementation manner is shown in FIG. 5. The multimedia device 100 further includes a switch 180-1. The switch 180-1 is serially connected between the feed pin and the feed chip 170-1. Correspondingly, the manner in which the feed pin is controlled to be in a charged state is that the control switch 180-1 is closed; and the manner in which the feed pin is controlled to be in a power-off state is that the control switch 180-1 is turned off.

In another optional implementation manner, the way to control the feed pin to be in a charged state is to send an enable signal to the feed chip 170-1, so that the feed chip 170-1 is the feed tube. The power supply of the pin is controlled to send a power-off state to the power feeding chip 170-1 to send a shutdown enable signal, so that the power feeding chip 170-1 does not supply power to the power feeding pin.

Further, as shown in FIG. 7, the multimedia device 100 may further include a feed chip 170-2 and a switch 180-2, wherein the hot plug detection pin is connected to the feed chip 170-2, and the switch 180-2 Connected in series between the hot plug detection pin and the first resistor.

When detecting the level state of the hot plug detection pin and the feed pin, the processing unit 110 preferably controls the hot plug detection pin to be in a power off state during the entire detection process. The control switch 180-2 is in a closed state. When it is determined that the device connected to the multimedia interface connector 130 is an input device, the power-off state of the hot-plug detection pin is maintained and the closed state of the switch 180-2 is maintained; Controlling the hot plug when the device connected to the multimedia interface connector 130 is an output device Pull the detection pin to a live state and disconnect switch 180-2. In a specific implementation, a second resistor may be connected in series between the hot plug detection pin and the feed chip 170-2, and the resistance of the second resistor is preferably 1000±10% ohm.

Similarly, the processing unit 110 can also control the charging/de-energizing state of the hot plug detection pin by different methods.

An optional implementation manner is shown in FIG. 7. The multimedia device 100 further includes a switch 180-3 connected in series between the hot plug detection pin and the feed chip 170-2.

Correspondingly, the manner in which the hot plug detection pin is controlled to be in a charged state is that the control switch 180-3 is closed; and the manner in which the hot plug detection pin is controlled to be in a power off state is that the control switch 180-3 is turned off.

In another optional implementation manner, controlling the hot plug detection pin to be in a charged state is to send an enable signal to the feed chip 170-2, so that the feed chip 170-2 is the heat. Plugging and detecting the pin power supply; controlling the hot plug detection pin to be in a power-off state, sending a shutdown enable signal to the feed chip 170-2, so that the feed chip 170-2 is not the heat The plug detection pin is powered.

If it is detected that the device connected to the multimedia interface connector 130 is an input device, the processing unit 110 can receive the multimedia data sent by the input device connected to the multimedia interface connector 140 through the input channel, and start to periodically detect the hot plug. Pulling out the level state of the detecting pin, when detecting that the level state of the hot plug detecting pin changes from a high level to a low level, determining that the input device is pulled out of the multimedia interface connector 130, restarting The above detection process.

If it is detected that the device connected to the multimedia interface connector 130 is an output device, the processing unit 110 can send multimedia data to the output device connected to the multimedia interface connector 140 through the output channel, and start to periodically detect the feed tube. The level state of the foot (eg, detected every 1 second), when it is detected that the level state of the feed pin changes from a high level to a low level, determining that the output device is pulled out of the multimedia interface connector 130. Restart the above detection process as shown in FIG. 6.

It should be noted that, in the above solution, the detection result obtained by the automatic detection mode is used to determine a multimedia input interface to be used by the multimedia input circuit 120-1 and the multimedia interface connector 130 or to use the multimedia output circuit 120-2 and A multimedia output interface formed by the multimedia interface connector 130. In addition, the detection result can also be used to implement other functions, such as implementing the automatic detection function in a video terminal having an existing multimedia interface, and realizing a reminder that the input/output interface is mis-inserted.

Correspondingly, the second embodiment of the present invention provides an access device detecting apparatus 200. As shown in FIG. 8, the access device detecting apparatus 200 includes: a detecting unit 210 and a feeding chip 220, and the detecting unit 210 includes a first detecting tube. And a second detecting pin, wherein the first detecting pin of the detecting unit and the feeding chip 220 are connected to the feeding pin of the multimedia interface connector to be detected, and the hot plug of the multimedia interface connector to be detected is detected The HotPlug Detection (HPD) pin is connected to the second detection pin of the detecting unit 210 and grounded through a resistor. The resistance value of the resistor is preferably 500 ohms or more.

In a specific implementation, the detecting unit 210 may be implemented by a processor, where the first detecting pin and the second detecting pin are input pins of the processor; or may be implemented by a peripheral circuit, correspondingly The first detecting pin and the second detecting pin are input pins of a chip of the peripheral circuit.

The detection process performed by the detection unit 210 is similar to the detection process performed by the processing unit 110 of the embodiment 1 of the present invention, and details are not described herein again. It should be noted that, if the detecting unit 210 controls the charging/de-energizing state of the feeding pin by controlling the closing or opening of the switch, as shown in FIG. 8, the access device detecting device 200 further includes a switch 230, and the switch 230 Connected between the feed chip 220 and the feed pin.

In the specific implementation, the access device detecting apparatus 200 of the embodiment 2 of the present invention can implement the automatic detecting function in the multimedia device 100 of Embodiment 1 of the present invention.

The access device detecting device 200 can also be used to implement a reminder of an input/output interface mis-insertion in a video terminal having an existing multimedia interface. The specific implementation manner may be that a reminder module is implemented in the video terminal, and the reminder module is connected to the detecting unit 210, and the feeding unit of the detecting unit 210 and the multimedia interface of the video terminal is hot-swapped. The detecting pins are connected, and when the detecting unit 210 detects that the device connected to the multimedia interface connector of the video terminal is an input device or When the device is sent out, the detection result is sent to the reminding module, and the reminding module determines, according to the detection result, that the device connected to the multimedia input interface connector of the video terminal is an output device or the video terminal When the device connected to the multimedia output interface connector is an input device, the user is reminded, such as playing a reminder audio.

In addition, the access device detecting apparatus 200 provided in Embodiment 2 of the present invention can be applied to the multimedia device 100 provided by Embodiment 1 of the present invention, and provides the access device detecting function for the multimedia device 100, so that the multimedia device 100 is based on the type of the access device. (Input device or output device) The interface is used as an input interface or an output interface, so that the phenomenon that the interface is insufficient and the interface is excessive can be avoided, and the problem of data transmission delay and interface resource waste existing in the prior art is reduced. .

A person skilled in the art may understand that all or part of the steps of implementing the above embodiments may be completed by hardware, or may be instructed by a program to execute related hardware, and the program may be stored in a computer readable storage medium. The storage medium mentioned may be a read only memory, a magnetic disk or an optical disk or the like.

The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalents, improvements, etc., which are within the spirit and scope of the present invention, should be included in the protection of the present invention. Within the scope.

Claims

A multimedia device, characterized in that the multimedia device comprises:

a processing unit, a multimedia input circuit, a multimedia output circuit, and a multimedia interface connector, wherein the processing unit is connected to the multimedia interface connector through the multimedia input circuit, and is connected to the multimedia interface through the multimedia output circuit Connected

The processing unit is configured to control an input channel connected to the multimedia interface connector through the multimedia input circuit when determining a multimedia input interface to be used by the multimedia input circuit and the multimedia interface connector An output channel in an on state and controlling connection with the multimedia interface connector through the multimedia output circuit is in an off state, and determining to use the multimedia output circuit and the multimedia interface connector to form a multimedia When the interface is output, the output channel is controlled to be in an on state, and the input channel is controlled to be in an off state.
The multimedia device according to claim 1, wherein the processing unit is configured to determine to use the multimedia input circuit and the device when detecting that the device connected to the multimedia interface connector is an input device The multimedia input interface formed by the multimedia interface connector determines a multimedia output interface formed by using the multimedia output circuit and the multimedia interface connector when detecting that the device connected to the multimedia interface is an output device.
The multimedia device according to claim 2, wherein the multimedia device further comprises a first power feeding chip; the multimedia interface connector comprises a feeding pin and a hot plug detecting pin; and the processing unit comprises a first detection pin and a second detection pin;

a feeding pin of the multimedia interface connector is respectively connected to the first detecting pin of the processing unit and the first feeding chip,

The hot plug detection pin of the multimedia interface connector is connected to the second detection pin of the processing unit, and is grounded through the first resistor;

The processing unit is specifically configured to: when the level of the feed pin is detected as being high by the first detection pin under the condition that the feed pin is controlled to be in a power-off state, The device connected to the multimedia interface connector is an output device, and when the feeding pin is controlled to be charged When the level of the hot plug detection pin is detected to be a high level by the second detecting pin, the device connected to the multimedia interface connector is determined to be an input device.
The multimedia device according to claim 3, wherein the processing unit is specifically configured to:

Controlling that the feed pin is in a charged state, and detecting a level state of the hot plug detection pin through the second detection pin, and detecting that a level state of the hot plug detection pin is Determining, when the level is high, determining that the device connected to the multimedia interface connector is an input device, and controlling the feed pin to be powered off when detecting that the level state of the hot plug detection pin is low And detecting, by the first detecting pin, a level state of the feeding pin, and determining that the device connected to the multimedia interface connector is when detecting that the level state of the feeding pin is a high level Output device; or,

Controlling that the feed pin is in a power-off state, and detecting a level state of the feed pin through the first detection pin, and detecting that a level state of the feed pin is a high level Determining that the device connected to the multimedia interface connector is an output device, and controlling the feeding pin to be in a charged state and passing the second when detecting that a level state of the feeding pin is a low level The detecting pin detects a level state of the hot plug detecting pin, and determines that the device connected to the multimedia interface connector is an input device when detecting that the level state of the hot plug detecting pin is a high level .
The multimedia device according to claim 3 or 4, wherein the multimedia device further comprises a first switch, the first switch being serially connected between the feed pin and the first feed chip ;

The processing unit is configured to control the feeding pin to be in a charged state, and specifically includes: the processing unit, configured to control the first switch to be closed;

The processing unit is configured to control the powering pin to be in a power-off state, and specifically includes: the processing unit, configured to control the first switch to be disconnected.
A multimedia device according to claim 3 or 4, wherein

The processing unit is configured to control the feed pin to be in a charged state, and specifically includes: the processing unit, configured to send an enable signal to the first feed chip, so that the first feed chip is Said Feed pin power supply;

The processing unit is configured to control the feeding pin to be in a power-off state, and specifically includes: the processing unit, configured to send a shutdown enable signal to the first feeding chip, so that the first feeding The chip does not supply power to the feed pin.
The multimedia device according to any one of claims 3-6, wherein the multimedia device further comprises a second feed chip and a second switch, wherein the hot plug detection pin and the second feed An electric chip is connected, and the second switch is connected in series between the hot plug detecting pin and the first resistor;

The processing unit is further configured to: when detecting a level state of the hot plug detection pin and the feed pin, control the hot plug detection pin to be in a power off state and control the second The switch is in a closed state, and when it is determined that the device connected to the multimedia interface connector is an input device, maintaining a power-off state of the hot-plug detection pin and maintaining a closed state of the second switch; When the device connected to the multimedia interface connector is an output device, the hot plug detection pin is controlled to be in a powered state and the second switch is turned off.
The multimedia device according to claim 1, wherein the multimedia device further comprises a user operation interface unit;

The user operation interface unit is configured to provide a configuration interface for configuring a multimedia interface, and generate a user operation instruction according to a configuration operation of the user on the configuration interface, and send the user operation instruction to the processing unit;

The processing unit is specifically configured to parse the user operation instruction to determine a multimedia input interface to be used by using the multimedia input circuit and the multimedia interface connector or to use the multimedia output circuit and the multimedia interface A multimedia output interface formed by a connector.
A multimedia device according to any of claims 1-8, characterized in that

The processing unit is configured to control an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and control connection with the multimedia interface connector through the multimedia output circuit The output channel is in an off state, and specifically includes: the processing order The element is configured to control the multimedia input circuit to be in a power supply state, and the multimedia output circuit is in a power-off state;

The processing unit is configured to control the output channel to be in an on state and control the input channel to be in an off state, and specifically, the processing unit is configured to control the multimedia input circuit to be in a power off state, and the multimedia The output circuit is in a power supply state.
The multimedia device according to claim 9, wherein said multimedia device further comprises a first power switch and a string connected in series between a power source for supplying power to said multimedia input circuit and said multimedia input circuit a second power switch connected between the power source for powering the multimedia output circuit and the multimedia output circuit;

The processing unit is configured to control the multimedia input circuit to be in a power supply state, and the multimedia output circuit is in a power-off state, specifically, the processing unit is configured to control the first power switch to be closed and control the second power source The switch is turned off;

The processing unit is configured to control the multimedia input circuit to be in a power-off state, and the multimedia output circuit is in a power supply state, specifically, the processing unit is configured to control the first power switch to be turned off and control the second The power switch is closed.
The multimedia device according to claim 9, wherein

The processing unit is configured to control the multimedia input circuit to be in a power supply state, and the multimedia output circuit is in a power-off state, and specifically includes: the processing unit, configured to send a first power source for powering the multimedia input circuit Transmitting an enable signal to cause the first power source to supply power to the multimedia input circuit, and send a shutdown enable signal to a second power source for powering the multimedia output circuit, so that the second power source is not Said multimedia output circuit power supply;

The processing unit is configured to control the multimedia input circuit to be in a power-off state, and the multimedia output circuit is in a power supply state, and specifically includes: the processing unit, configured to send a shutdown enable signal to the first power source, so that The first power source does not supply power to the multimedia input circuit, and sends an enable signal to the second power source to enable the second power source to supply power to the multimedia output circuit.
The multimedia device according to any one of claims 1-8, wherein said multimedia The device also includes a first switcher;

The multimedia input circuit and the multimedia output circuit are connected to the multimedia interface connector by the first switch, wherein the first pin, the second pin, and the third pin of the first switch Connected to the multimedia input circuit, the multimedia output circuit, and the multimedia interface connector, respectively;

The processing unit is configured to control an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and control connection with the multimedia interface connector through the multimedia output circuit The output channel is in an off state, and the method includes: the processing unit is configured to control the first switch to turn on a line between the first pin and the third pin, and disconnect the second a line between the pin and the third pin;

The processing unit is configured to control the output channel to be in an on state and control the input channel to be in an off state, and the method further includes: the processing unit is configured to control the first switch to disconnect the first tube a line between the foot and the third pin and a line between the second pin and the third pin.
The multimedia device according to claim 12, wherein the multimedia device further comprises a second switch;

The multimedia input circuit and the multimedia output circuit are connected to the processing unit by the second switch, wherein the first pin, the second pin, and the third pin of the second switch respectively The multimedia input circuit, the multimedia output circuit and the processing unit are connected;

The processing unit is configured to control an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and control connection with the multimedia interface connector through the multimedia output circuit The output channel is in an off state, and the method further includes: the processing unit is configured to control the second switch to turn on a line between the first pin and the third pin, and disconnect the first a line between the two pins and the third pin;

The processing unit is configured to control the output channel to be in an on state and control the input channel to be in an off state, and specifically, the processing unit is configured to control the switch to disconnect the first A line between the pin and the third pin, and turns on a line between the second pin and the third pin.
An access device detecting device, comprising: a detecting unit and a feeding chip, wherein the detecting unit comprises a first detecting pin and a second detecting pin, wherein the detecting The first detecting pin of the unit and the feeding chip are both connected to the feeding pin of the multimedia interface connector to be detected, and the hot plug detecting pin of the multimedia interface connector to be detected and the detecting unit are The second detection pin is connected and grounded through a resistor;

The detecting unit is configured to determine, when the level of the feeding pin is high by detecting the feeding pin by the first detecting pin under the condition that the feeding pin is in a power-off state, The device connected to the multimedia interface connector is an output device, and the level state of the hot plug detection pin is detected by the second detecting pin when the feeding pin is controlled to be in a charged state. When it is high, it is determined that the device connected to the multimedia interface connector is an input device.
The access device detecting device according to claim 14, wherein the detecting unit is specifically configured to:

Controlling that the feed pin is in a charged state, and detecting a level state of the hot plug detection pin through the second detection pin, and detecting that a level state of the hot plug detection pin is Determining, when the level is high, determining that the device connected to the multimedia interface connector is an input device, and controlling the feed pin to be powered off when detecting that the level state of the hot plug detection pin is low And detecting, by the first detecting pin, a level state of the feeding pin, and determining that the device connected to the multimedia interface connector is when detecting that the level state of the feeding pin is a high level Output device; or,

Controlling that the feed pin is in a power-off state, and detecting a level state of the feed pin through the first detection pin, and detecting that a level state of the feed pin is a high level Determining that the device connected to the multimedia interface connector is an output device, and controlling the feeding pin to be in a charged state and passing the second when detecting that a level state of the feeding pin is a low level The detection pin detects a level state of the hot plug detection pin, and detects that the level of the hot plug detection pin is high When the level is determined, the device connected to the multimedia interface connector is an input device.
The access device detecting apparatus according to claim 14 or 15, wherein the access device detecting device further comprises a first switch, the first switch is connected in series to the feeding pin and the feeding Between electric chips;

The detecting unit is configured to control the feeding pin to be in a charged state, and specifically includes: the detecting unit, configured to control the first switch to be closed;

The detecting unit is configured to control the feeding pin to be in a power-off state, and specifically includes: the detecting unit, configured to control the first switch to be disconnected.
The access device detecting apparatus according to claim 14 or 15, wherein

The detecting unit is configured to control the feeding pin to be in a charging state, and specifically includes: the detecting unit, configured to send an enable signal to the feeding chip, so that the feeding chip is the feeding Pin power supply;

The detecting unit is configured to control the feeding pin to be in a power-off state, and specifically includes: the detecting unit, configured to send a shutdown enable signal to the feeding chip, so that the feeding chip is not in use The feed pin is powered.
A method for implementing a multimedia interface, wherein the method is applied to a multimedia device, the multimedia device comprising: a processing unit, a multimedia input circuit, a multimedia output circuit, and a multimedia interface connector, wherein the processing unit passes The multimedia input circuit is connected to the multimedia interface connector, and is connected to the multimedia interface connector through the multimedia output circuit; the method includes:

The processing unit controls the input channel connected to the multimedia interface connector through the multimedia input circuit to be turned on when determining that the multimedia input interface formed by the multimedia input circuit and the multimedia interface connector is to be used a state, and controlling an output channel connected to the multimedia interface connector through the multimedia output circuit to be in an off state, when determining a multimedia output interface to be used by the multimedia output circuit and the multimedia interface connector Control the The output channel is in an on state and controls the input channel to be in an open state.
The method according to claim 18, wherein the method further comprises: when the detecting unit detects that the device connected to the multimedia interface connector is an input device, determining that the multimedia input circuit is to be used and The multimedia input interface formed by the multimedia interface connector determines a multimedia output interface formed by using the multimedia output circuit and the multimedia interface connector when detecting that the device connected to the multimedia interface is an output device.
The method according to claim 19, wherein the multimedia device further comprises a first feed chip, the multimedia interface connector comprises a feed pin, a hot plug detection pin; and the processing unit comprises a detecting pin and a second detecting pin, wherein the feeding pin of the multimedia interface connector is respectively connected to the first detecting pin of the processing unit and the first feeding chip, and the multimedia interface connector The hot plug detection pin is connected to the second detection pin of the processing unit, and is grounded through the first resistor; the method further includes:

Determining that the multimedia interface connector is connected when it is detected that the level of the feed pin is high by the first detection pin under the condition that the feed pin is in a power-off state. The device is an output device, and when the level of the hot plug detection pin is detected as being high by the second detection pin under the condition that the feed pin is controlled to be in a charged state, The device to which the multimedia interface connector is connected is an input device.
The method according to claim 20, wherein said detecting a level of said feed pin is detected by said first detecting pin under control of said feed pin being in a power-off state When the state is high, determining that the device connected to the multimedia interface connector is an output device, and detecting the hot plug by using the second detecting pin when controlling the feeding pin to be in a charged state. When the level of the detection pin is high, it is determined that the device connected to the multimedia interface connector is an input device, and specifically includes:

Controlling that the feed pin is in a charged state, and detecting a level state of the hot plug detection pin through the second detection pin, and detecting that a level state of the hot plug detection pin is When the level is high, determining that the device connected to the multimedia interface connector is an input device, and detecting the hot plugging Controlling that the feed pin is turned off when the level state of the pin is low, and detecting the level state of the feed pin by the first detection pin, when the feed is detected Determining that the device connected to the multimedia interface connector is an output device when the level of the power pin is high; or

Controlling that the feed pin is in a power-off state, and detecting a level state of the feed pin through the first detection pin, and detecting that a level state of the feed pin is a high level Determining that the device connected to the multimedia interface connector is an output device, and controlling the feeding pin to be in a charged state and passing the second when detecting that a level state of the feeding pin is a low level The detecting pin detects a level state of the hot plug detecting pin, and determines that the device connected to the multimedia interface connector is an input device when detecting that the level state of the hot plug detecting pin is a high level .
The method according to claim 20 or 21, wherein the multimedia device further comprises a first switch, the first switch being connected in series between the feed pin and the first feed chip;

The processing unit controls the feeding pin to be in a charged state, and specifically includes: the processing unit controls the first switch to be closed;

The processing unit controls the feeding pin to be in a power-off state, and specifically includes: the processing unit controls the first switch to be disconnected.
The method according to claim 20 or 21, wherein the multimedia device further comprises a second feed chip and a second switch, wherein the hot plug detection pin is connected to the second feed chip The second switch is connected in series between the hot plug detection pin and the first resistor; the method further includes:

The processing unit controls the hot plug detection pin to be in a power off state and control the second switch to be in a closed state when detecting a level state of the hot plug detection pin and the feed pin And determining that the device connected to the multimedia interface connector is an input device, maintaining a power-off state of the hot-plug detection pin and maintaining a closed state of the second switch; determining the multimedia interface connector When the connected device is an output device, the hot plug detection pin is controlled to be in a powered state and the second switch is turned off.
A method according to any one of claims 18-23, wherein

The processing unit controls an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and controls an output channel connected to the multimedia interface connector through the multimedia output circuit In the disconnected state, the method further includes: the processing unit controls the multimedia input circuit to be in a power supply state, and the multimedia output circuit is in a power-off state;

The processing unit controls the output channel to be in an on state and control the input channel to be in an off state, and specifically includes: the processing unit controls the multimedia input circuit to be in a power off state, and the multimedia output circuit is powered status.
The method of claim 24, wherein said multimedia device further comprises a first power switch connected in series between a power source for powering said multimedia input circuit and said multimedia input circuit, and a serial connection a second power switch between the power source for powering the multimedia output circuit and the multimedia output circuit;

The processing unit controls the multimedia input circuit to be in a power supply state, and the multimedia output circuit is in a power-off state, specifically: the processing unit controls the first power switch to be closed and controls the second power switch to be turned off;

The processing unit controls the multimedia input circuit to be in a power-off state, and the multimedia output circuit is in a power supply state, and specifically includes: the processing unit controls the first power switch to be turned off and the second power switch to be closed.
The method according to any one of claims 18-23, wherein the multimedia device further comprises a first switcher;

The multimedia input circuit and the multimedia output circuit are connected to the multimedia interface connector by the first switch, wherein the first pin, the second pin, and the third pin of the first switch Connected to the multimedia input circuit, the multimedia output circuit, and the multimedia interface connector, respectively;

The processing unit controls an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and controls an output channel connected to the multimedia interface connector through the multimedia output circuit In the disconnected state, specifically: the processing unit control The first switch turns on a line between the first pin and the third pin, and disconnects a line between the second pin and the third pin;

The processing unit controls the output channel to be in an on state and control the input channel to be in an off state, and specifically includes: the processing unit controls the first switch to disconnect the first pin and the a line between the third pins and a line between the second pin and the third pin.
The method of claim 26, wherein the multimedia device further comprises a second switch;

The multimedia input circuit and the multimedia output circuit are connected to the processing unit by the second switch, wherein the first pin, the second pin, and the third pin of the second switch respectively The multimedia input circuit, the multimedia output circuit and the processing unit are connected;

The processing unit controls an input channel connected to the multimedia interface connector through the multimedia input circuit to be in an on state, and controls an output channel connected to the multimedia interface connector through the multimedia output circuit In the disconnected state, the method further includes: the processing unit controls the second switch to turn on a line between the first pin and the third pin, and disconnect the second pin and a line between the third pins;

The processing unit controls the output channel to be in an on state and control the input channel to be in an off state, and specifically includes: the processing unit controls the switch to disconnect the first pin and the first A line between the three pins and a line between the second pin and the third pin.
A method for implementing detection of an access device, wherein the method is applied to an access device detecting device, the access device detecting device comprising: a detecting unit and a feeding chip, wherein the detecting unit comprises a first detecting tube And a second detecting pin, wherein the first detecting pin of the detecting unit and the feeding chip are both connected to a feeding pin of the multimedia interface connector to be detected, and the multimedia interface connector to be detected is The hot plug detection pin is connected to the second detection pin of the detecting unit and grounded through a resistor; the method includes:

Determining, by the detecting unit, when the level of the feeding pin is high by the first detecting pin under the condition that the feeding pin is in a power-off state, determining the multimedia interface The device connected to the connector is an output device, and when the control pin is in a charged state, the level of the hot plug detection pin is detected as high by the second detecting pin. Usually, it is determined that the device to which the multimedia interface connector is connected is an input device.
The access device detecting apparatus according to claim 28, wherein said feeding tube is detected by said first detecting pin while controlling said feeding pin to be in a power-off state When the level state of the pin is a high level, determining that the device connected to the multimedia interface connector is an output device, and detecting by the second detecting pin when controlling the feeding pin to be in a charged state When the level state of the hot plug detection pin is a high level, determining that the device connected to the multimedia interface connector is an input device, specifically includes:

Controlling that the feed pin is in a charged state, and detecting a level state of the hot plug detection pin through the second detection pin, and detecting that a level state of the hot plug detection pin is Determining, when the level is high, determining that the device connected to the multimedia interface connector is an input device, and controlling the feed pin to be powered off when detecting that the level state of the hot plug detection pin is low And detecting, by the first detecting pin, a level state of the feeding pin, and determining that the device connected to the multimedia interface connector is when detecting that the level state of the feeding pin is a high level Output device; or,

Controlling that the feed pin is in a power-off state, and detecting a level state of the feed pin through the first detection pin, and detecting that a level state of the feed pin is a high level Determining that the device connected to the multimedia interface connector is an output device, and controlling the feeding pin to be in a charged state and passing the second when detecting that a level state of the feeding pin is a low level The detecting pin detects a level state of the hot plug detecting pin, and determines that the device connected to the multimedia interface connector is an input device when detecting that the level state of the hot plug detecting pin is a high level .
The access device detecting apparatus according to claim 28 or 29, wherein said access device detecting means further comprises a first switch, said first switch being serially connected to said feed pin and said feed Between electric chips;

The detecting unit controls the feeding pin to be in a charged state, and specifically includes: the detecting unit controls the first switch to be closed;

The detecting unit controls the feeding pin to be in a power-off state, and specifically includes: the detecting unit controls the first switch to be disconnected.
Method according to claim 28 or 29, characterized in that

The detecting unit controls the feeding pin to be in a charging state, and specifically includes: the detecting unit sends an enabling signal to the feeding chip, so that the feeding chip supplies power to the feeding pin;

The detecting unit controls the feeding pin to be in a power-off state, and specifically includes: the detecting unit sends a shutdown enable signal to the feeding chip, so that the feeding chip is not the feeding pin powered by.