TWI611697B - Hdmi device and method for controlling the same - Google Patents

Abstract

The invention provides a high resolution multimedia interface device and a control method thereof. The high-resolution multimedia interface device includes a high-resolution multimedia interface port, a control circuit, a main control circuit, a slave circuit, and a switch circuit. The main control circuit and the slave circuit are respectively configured to generate a main control high resolution multimedia interface output signal and a slave high resolution multimedia interface output signal. The switch circuit is coupled to the HDMI port and the control circuit. The switch circuit selectively turns on the first conductive state and the second conductive state according to the control signal generated by the control circuit; when the switch circuit is turned on the first conductive state, the switch circuit is electrically connected to the main control circuit, so that the main control high-resolution multimedia interface outputs The signal is connected to the output via the high-resolution multimedia interface; when the switch circuit is turned on in the second conductive state, the switch circuit is electrically connected to the slave circuit, so that the slave high-resolution multimedia interface output signal is output via the HDMI port.

Description

High-resolution multimedia interface device and control method thereof

The present invention relates to an electronic device, and more particularly to an electronic device supporting a high resolution multimedia interface technology.

In recent years, with the increasing popularity of High Definition Multimedia Interface (HDMI) technology, most electronic devices are equipped with HDMI ports, for example, game consoles, DVDs, and personal computers as source devices. A notebook computer, or a television, projector, and computer monitor that acts as a source playback device. Only one HDMI transmission line between the source device and the source playback device can output the HDMI signal containing the audio and video from the source device to the source device. For example, a personal computer can output a display screen and audio output to a television for audio and video playback.

However, in the conventional HDMI technology, the source device generally does not support the function of playing the source output by other source devices, and the source device does not support the function of outputting the source. The dual function of the source and the receiving source for playing, the electronic device is bound to add an HDMI port, one of the HDMI ports is used to receive the HDMI signal from other source devices, and the other HDMI port is used to output the signal. Source to other source playback devices, which increases the number of communication ports that the electronic device needs to accommodate, resulting in an increase in the size of the electronic device. In order to avoid increasing the number of communications, it is necessary to sacrifice other communications, such as The number of USB ports. Furthermore, the additional use of an HDMI port also increases the production cost of the product. Further, if the electronic device includes two HDMI ports, the user must also rely on the label next to the HDMI port to identify which of the two HDMI ports is the source output port, and which one is the source receiving port, if If the error is recognized, the HDMI cable is connected to the wrong port, causing the source device to play the device normally, which is inconvenient for the user.

In view of this, the present invention provides a high resolution multimedia interface device and a control method thereof.

In an embodiment, a high resolution multimedia interface device includes a high resolution multimedia interface port, a control circuit, a main control circuit, a slave circuit, and a switch circuit. The control circuit is configured to generate a control signal; the main control circuit is configured to generate a master high resolution multimedia interface output signal; the slave circuit is configured to generate a slave high resolution multimedia interface output signal; and the switch circuit is coupled to the high resolution multimedia interface port. And a control circuit, wherein the switch circuit is selectively connected to the first conductive state and the second conductive state according to the control signal; when the switch circuit is turned on the first conductive state, the switch circuit is electrically connected to the main control circuit, so that the main The high-resolution multimedia interface output signal is connected to the output through the high-resolution multimedia interface; when the switch circuit is turned on in the second conductive state, the switch circuit is electrically connected to the slave circuit, so that the slave high-resolution multimedia interface output signal is connected through the high-resolution multimedia interface.埠 output.

In an embodiment, the foregoing main control circuit is further configured to receive a slave high resolution multimedia interface input signal, and the slave circuit is further configured to receive a master high resolution multimedia interface input signal; when the switch circuit is turned on in the first conductive state The main control circuit is via a high resolution multimedia interface The connection port receives the slave high resolution multimedia interface input signal; when the switch circuit is turned on in the second conduction state, the slave circuit receives the master high resolution multimedia interface input signal via the high resolution multimedia interface connection.

In one embodiment, the master high resolution multimedia interface output signal includes a minimized transmission differential signal output signal and a power output signal, and the master high resolution multimedia interface input signal includes a minimized transmission differential signal input signal. And a power input signal, the slave high resolution multimedia interface input signal includes an extended display identification information input signal and a hot plug detection input signal, and the slave high resolution multimedia interface output signal includes an extended display identification information output signal and a hot plug detect Measure the output signal.

In an embodiment, the control circuit is coupled to the high-resolution multimedia interface port, and the switch circuit is connected to the first conductive state according to a logic level of the control signal, and the control circuit receives the power through the high-resolution multimedia interface. Inputting a signal, the control circuit generates a control signal having another logic level to switch the switch circuit from the first conductive state to the second conductive state.

In an embodiment, the control circuit is coupled to the slave circuit, and after the switch circuit is turned on according to one of the logic signals of the control signal, the control circuit receives the extended display identification information output signal via the slave circuit, and the control circuit A control signal having another logic level is generated to switch the switching circuit from the first conducting state to the second conducting state.

In an embodiment, the main control circuit is coupled to the control circuit, and the main control circuit and the control circuit are respectively a platform control central device and an embedded controller, and the main control circuit receives a power-on power and drives the embedded device. The controller generates a control signal to cause the switch circuit to conduct in a first conductive state.

In one embodiment, the aforementioned control circuit is an embedded controller, and the control circuit receives a standby power supply to supply the operation of the slave circuit and the switch circuit.

In an embodiment, the high-resolution multimedia interface device further includes a casing for accommodating a high-resolution multimedia interface port, a control circuit, a main control circuit, a slave circuit, and a switch circuit, and a solid body is formed on the casing. The button is configured to receive a touch to generate a touch signal, and the control circuit generates a corresponding control signal according to the touch signal.

In one embodiment, the high-resolution multimedia interface device further includes a display unit housed in the housing, and one of the video adjustment function menus displayed by the display unit further includes one of the on-state setting conditions of the switch circuit, and the entity The button receives the aforementioned touch to change the setting option, so that the control circuit generates a corresponding control signal.

In an embodiment, a method for controlling a high-resolution multimedia interface device includes: generating a master high-resolution multimedia interface output signal via a main control circuit, electrically connecting the main control circuit and a high-resolution multimedia interface via a switch circuit; The main control high-resolution multimedia interface output signal is connected to the output through the high-resolution multimedia interface, generates a dependent high-resolution multimedia interface output signal via a slave circuit, and is electrically connected to the slave circuit and the high-resolution multimedia interface via the switch circuit. The slave high resolution multimedia interface output signal is connected to the output via a high resolution multimedia interface.

In an embodiment, the control method of the multimedia interface device further includes: receiving a dependent high-resolution multimedia interface input signal via a high-resolution multimedia interface port, electrically connecting the main control circuit and the high-resolution multimedia interface port via the switch circuit, The main control circuit receives the dependent high-resolution multimedia interface input signal through the high-resolution multimedia interface, receives the high-resolution multimedia interface input signal through the high-resolution multimedia interface interface, and receives the input signal through the high-resolution multimedia interface. The circuit is electrically connected to the slave circuit and the high-resolution multimedia interface port, so that the slave circuit receives the master high-resolution multimedia interface input signal via the high-resolution multimedia interface.

In summary, according to an embodiment of the high-resolution multimedia interface device and the control method thereof, an HDMI port of the high-resolution multimedia interface device can be connected to the master device and the slave device. In this way, the high-resolution multimedia interface device can be used as the master terminal and the slave terminal. Compared with the prior art, the number of HDMI ports does not need to be increased, thereby saving the production cost of the high-resolution multimedia interface device. Moreover, the user does not need to visually recognize the HDMI connection as an input port or an output port, thus improving the usability.

1‧‧‧High-resolution multimedia interface device

11‧‧‧High-resolution multimedia interface port埠

12‧‧‧Control circuit

13‧‧‧Master circuit

14‧‧‧Subordinate circuit

15‧‧‧Switch circuit

16‧‧‧Display unit

17‧‧‧Audio playback unit

18‧‧‧Shell

181‧‧‧ physical button

182‧‧‧ physical button

2‧‧‧Subordinate device

21‧‧‧High-resolution multimedia interface port埠

22‧‧‧HDMI Control Unit

23‧‧‧Read-only memory

3‧‧‧Master device

31‧‧‧High-resolution multimedia interface port埠

4‧‧‧High resolution multimedia interface device

5‧‧‧High-resolution multimedia interface device

S1‧‧‧ Master high resolution multimedia interface output signal

S11‧‧‧TMDS output signal

S12‧‧‧Power output signal

S2‧‧‧Subordinate high-resolution multimedia interface input signal

S21‧‧‧EDID input signal

S22‧‧‧HPD input signal

S3‧‧‧Subordinate high-resolution multimedia interface output signal

S31‧‧‧EDID output signal

S32‧‧‧HPD output signal

S4‧‧‧Master high-resolution multimedia interface input signal

S41‧‧‧TMDS input signal

S42‧‧‧Power input signal

S5‧‧‧ control signal

1 is a block diagram showing an embodiment of a high resolution multimedia interface device according to the present invention.

FIG. 2 is a block diagram showing a high resolution multimedia interface device 1 of FIG. 1 connected to a slave device 2.

FIG. 3 is a block diagram showing an embodiment of the high-resolution multimedia interface device 1 of FIG. 1 connected to a host device 3.

FIG. 4 is a block diagram showing another embodiment of the high resolution multimedia interface device 1 of FIG. 1 connected to a master device 3.

Fig. 5 is a schematic view showing the appearance of an embodiment of a high resolution multimedia interface device according to the present invention.

Fig. 6 is a perspective view showing an embodiment of a high resolution multimedia interface device connected to each other according to the present invention.

1 is a block diagram of one of the high resolution multimedia interface devices in accordance with the present invention. Referring to FIG. 1, the high-resolution multimedia interface device 1 includes a high-resolution multimedia interface port 11, a control circuit 12, a main control circuit 13, a slave circuit 14, and a switch circuit 15. The switch circuit 15 is coupled to the high resolution multimedia interface port 11 and the control circuit 12, and the switch circuit 15 is selectively coupled to the main control circuit 13 and the slave circuit 14. In some implementations, the switching circuit 15 can be an electronic switch. For example, the switching circuit 15 can be implemented with a plurality of metal oxide semiconductor field effect transistors (MOSFETs).

The high-resolution multimedia interface device 1 can perform HDMI communication with other electronic devices having an HDMI connection, and the main control circuit 13 is configured to generate a master high-resolution multimedia interface output signal S1 and receive the slave high-resolution multimedia from the electronic device. The interface inputs the signal S2. The slave circuit 14 is configured to generate a slave high resolution multimedia interface output signal S3 and receive a master high resolution multimedia interface input signal S4 from the electronic device. Furthermore, as shown in FIG. 1, the switch circuit 15 is controlled by the control circuit 12, the control circuit 12 is used to generate the control signal S5, the switch circuit 15 receives the control signal S5 generated by the control circuit 12, and the switch circuit 15 is based on the control signal S5. The logic level can be switched to the first conduction state and the second conduction state. For example, the control signal S5 of the high logic level (ie, logic "1") may cause the switching circuit 15 to be turned on in the first conduction state, and the control signal S5 of the low logic level (ie, logic "0"). The switch circuit 15 can be caused to conduct in a second conductive state. For example, the gate circuit of the MOSFET is connected to the control circuit 12 to receive the control signal S5.

Therefore, the switch circuit 15 is selectively coupled to the main control circuit 13 and the slave circuit 14 according to the two on states of the switch circuit 15. When the switch circuit 15 is turned on in the first conductive state When the switch circuit 15 is electrically connected to the main control circuit 13, the high-resolution multimedia interface device 1 can be used as a master terminal, so that the main control high-resolution multimedia interface output signal S1 generated by the main control circuit 13 is high-resolution. The multimedia interface connects the output of the UI 11 and causes the main control circuit 13 to receive the dependent high resolution multimedia interface input signal S2 via the high resolution multimedia interface port 11 . On the other hand, when the switch circuit 15 is turned on in the second conductive state, the switch circuit 15 is electrically connected to the slave circuit 14, and the high resolution multimedia interface device 1 can be used as a slave terminal to enable the slave circuit 14 to generate slaves. The high-resolution multimedia interface output signal S3 is connected to the 埠11 output via the high-resolution multimedia interface, and the slave circuit 14 receives the master high-resolution multimedia interface input signal S4 via the high-resolution multimedia interface port 埠11.

2 to FIG. 4 are block diagrams showing an embodiment of the high-resolution multimedia interface device 1 of FIG. 1 as a master and a slave. Referring to FIG. 2 to FIG. 4 at the same time, it is worth noting that the high-resolution multimedia interface port 11 has a Minimized Differential Signaling (TMDS) channel and a Display Data Channel (DDC) channel. (Consumer Electronics Control; CEC) channel, Power line and Hot Plug Detection (HPD) line, high resolution multimedia interface port 11 compatible with any existing HDMI connector, for example, with 19 A type HDMI connector for the pin, a B-type HDMI connector with 29 pins, a C-type HDMI connector with 19 pins, and a D-type HDMI connector with 19 pins. The user of the high-resolution multimedia interface device 1 can connect one end of any type of HDMI transmission line to the HDMI port 11 and connect the other end to the slave device 2 or the host device 3 to transmit audio and video data in the HDMI format. .

Accordingly, as shown in FIG. 2, the main control circuit 13 can generate a TMDS output signal. The main control high-resolution multimedia interface output signal S1 of the S11 and the power output signal S12, the TMDS output signal S11 and the power output signal S12 can be respectively connected to the TMDS channel and the power line output of the 埠11 via the high-resolution multimedia interface. The main control circuit 13 can receive the dependent high resolution multimedia interface input signal S2 including the extended display identification data (EDID) input signal S21 and the HPD input signal S22 via the DDC channel and the HPD line, respectively. Moreover, as shown in FIG. 3, the slave circuit 14 can generate a slave high resolution multimedia interface output signal S3 including an EDID output signal S31 and an HPD output signal S32, and the EDID output signal S31 and the HPD output signal S32 can respectively pass through the DDC channel and the HPD line. Output. The slave circuit 14 can receive the master high resolution multimedia interface input signal S4 including the TMDS input signal S41 and the power input signal S42 via the TMDS channel and the power line respectively.

Taking the high-resolution multimedia interface device 1 as a main control terminal as an example, as shown in FIG. 2, the high-resolution multimedia interface device 1 is connected to a slave device 2. The slave device 2 can include a high resolution multimedia interface port 21, an HDMI control unit 22, and a read only memory 23. After the two ends of the HDMI transmission line are respectively connected to the high-resolution multimedia interface port 11 and the high-resolution multimedia interface port 21, since the switch circuit 15 is turned on in the first conduction state, the high-resolution multimedia interface is connected to each channel and each line of the port 11 It is electrically connected to the main control circuit 13 via the switch circuit 15. Therefore, the power output signal S12 generated by the main control circuit 13 can be transmitted to the slave device 2 via the switch circuit 15, the high resolution multimedia interface port 11 and the high resolution multimedia interface port 21, and the HDMI control unit 22 of the slave device 2 is enabled. The read-only memory 23 storing the EDID respectively outputs the HPD input signal S22 and the EDID input signal S21 having a high logic level in response to the power output signal S12. Then, the main control circuit 13 receives the EDID input signal S21 and the HPD input signal S22 via the high resolution multimedia interface port 11 and the switch circuit 15. The main control circuit 13 has a high logic level The HPD input signal S22 can be said that the high resolution multimedia interface port 11 is connected to the slave device 2. Moreover, the main control circuit 13 transmits a TMDS output signal S11 compatible with the display unit of the slave device 2 according to the EDID input signal S21. Finally, the TMDS output signal S11 is transmitted to the slave device 2 via the switch circuit 15, the high resolution multimedia interface port 11 and the high resolution multimedia interface port 21, so that the slave device 2 can respectively play video and audio.

Taking the high-resolution multimedia interface device 1 as a slave terminal as an example, as shown in FIG. 3, the high-resolution multimedia interface device 1 is connected to the master device 3 including the high-resolution multimedia interface port 31. The master device 3 includes a high resolution multimedia interface port 31. After the two ends of the HDMI transmission line are respectively connected to the high-resolution multimedia interface port 11 and the high-resolution multimedia interface port 31, since the switch circuit 15 is turned on in the second conduction state, the high-resolution multimedia interface is connected to each channel and each line of the port 11 The slave circuit 14 is electrically connected via the switch circuit 15. Therefore, the main control device 3 can output the power input signal S42 via the high resolution multimedia interface port 31, and the power input signal S42 is transmitted to the slave circuit 14 via the high resolution multimedia interface port 11 and the switch circuit 15, so that the slave circuits 14 output respectively. The EDID output signal S31 and the HPD output signal S32 having a high logic level respond to the power input signal S42. Then, the EDID output signal S31 and the HPD output signal S32 are sent to the host device 3 via the switch circuit 15, the high resolution multimedia interface port 11 and the high resolution multimedia interface port 31, so that the master device 3 knows the high resolution multimedia. The interface port 31 is connected to the high resolution multimedia interface device 1. Therefore, the main control device 3 outputs the TMDS input signal S41 compatible with the display unit 16 of the high resolution multimedia interface device 1 according to the EDID output signal S31. The TMDS input signal S41 is connected to the multimedia interface port 11 and the switch via the multimedia interface. Circuit 15 is passed to slave circuit 14. Finally, the slave circuit 14 performs signal processing on the TMDS input signal S41 to transmit the video and audio to the display unit 16, respectively. And an audio playback unit 17.

In some implementations, the high resolution multimedia interface device 1 can be an all in one (AIO) computer. As shown in FIG. 5, the high-resolution multimedia interface device 1 further includes a housing 18, and the housing 18 can accommodate a high-resolution multimedia interface port 11, a control circuit 12, a main control circuit 13, a slave circuit 14, and a switch circuit 15. . Here, the main control circuit 13 can be realized by integrally forming a platform controller hub (PCH) of the computer to output the integrated DSDS output signal S11 of the video and audio. The slave circuit 14 can be implemented by electrically connecting an input/output chip (I/O chip) to a read-only memory, a decoder, and an HPD controller. The decoder can support Low Voltage Differential Signaling (LVDS) transmission, the decoder decodes the TMDS input signal S41 and separates the video from the audio; the read-only memory stores the EDID and can output the EDID output. The signal S31; and the HPD controller can output the HPD output signal S32 with a high logic level after receiving the power input signal S42 with a voltage level of 5V. The control circuit 12 can be an embedded controller or any special application integrated circuit (ASIC) with control functions.

Therefore, in the implementation aspect of the high-resolution multimedia interface device 1 being an AIO computer, the high-resolution multimedia interface device 1 further includes a power supply unit. When the high-resolution multimedia interface device 1 is powered on, the power supply unit provides a power-on power supply. The main control circuit 13 operates by receiving power on. Therefore, the high-resolution multimedia interface device 1 can be preset as the master terminal after being turned on, and the switch circuit 15 can be automatically turned on in the first conductive state according to the control signal S5. In detail, as shown in FIG. 2, the main control circuit 13 is coupled to the control circuit 12, and the main control circuit 13 automatically drives the control circuit 12 after being over-powered, so that the control circuit 12 emits a corresponding logic level (for example, high). The control signal S5 of the logic level is controlled to be turned on in the first conducting state by the switching circuit 15. further, After the switch circuit 15 is turned on in the first conductive state, the high-resolution multimedia interface device 1 in the power-on state is not automatically switched to the slave terminal by the master terminal, that is, the switch circuit 15 is turned on when the high-resolution multimedia interface device 1 is powered on. The first conduction state is not automatically switched to the second conduction state, and the switching circuit 15 is continuously turned on in the first conduction state to enable the high resolution multimedia interface device 1 to be connected to the slave device 2.

On the other hand, when the high-resolution multimedia interface device 1 is not powered on or operates in some of the power-saving standby modes of the basic input/output system (BIOS), the power supply unit can supply a standby power supply, at this time, being embedded. The control circuit 12 of the controller can receive the standby power from the power supply unit, and transmit the standby power to the slave circuit 14, the switch circuit 15, the audio playback unit 17, and the display unit 16, so that the slave circuit 14, the switch circuit 15, and the audio player play Unit 17 and display unit 16 can operate independently after receiving standby power. Thus, the high-resolution multimedia interface device 1 can function as a slave to display video and play audio.

In the embodiment of the high-resolution multimedia interface device 1 as the slave terminal, if the switch circuit 15 is to be automatically turned on in the second conductive state, as shown in FIG. 3, the control circuit 12 can be coupled to the high-resolution multimedia interface port 11 to The power line is coupled to the high resolution multimedia interface port 11 . Moreover, the control circuit 12 can include a buffer to automatically generate the corresponding control signal S5 according to the direction of the power signal to automatically set the conduction state of the switch circuit 15. In detail, if the control circuit 12 detects by the buffer that the received signal is from the high-resolution multimedia interface port 11, such as the power input signal S42, the high-resolution multimedia interface device 1 at this time is used as the slave. Therefore, the control circuit 12 generates a corresponding control signal S5, and the control signal S5 has a low logic level to enable the switch circuit 15 to be turned on in the second conductive state. The control circuit 12 generates the power input signal S42 after detecting the power input signal S42. Control signal with low logic level No. S5. Therefore, if the switch circuit 15 is turned on in the first conductive state before the high resolution multimedia interface device 1 is used as the slave terminal, the control circuit 12 can generate another logic level according to the power input signal S42 from the master device 3. The control signal S5 is configured to automatically switch the switch circuit 15 from the first conductive state to the second conductive state. After the switch circuit 15 is switched to the second conductive state, the high-resolution multimedia interface device 1 can normally communicate with the master device 3.

Alternatively, in other implementations, if the slave circuit 14 does not generate the EDID output signal S31 based on the power input signal S42 but continuously transmits the EDID output signal S31, the control circuit 12 may include another buffer to detect the EDID signal. The direction is to generate a corresponding control signal S5. As shown in FIG. 4, the control circuit 12 can be coupled to the slave circuit 14 to receive the EDID signal generated by the slave circuit 14, such as the EDID output signal S31. When the control circuit 12 detects that the EDID signal is from the slave circuit 14, the control circuit 12 indicates that the EDID signal is from the slave circuit 14. The high resolution multimedia interface device 1 is used as a slave terminal. At this time, the control circuit 12 generates a control signal S5 having a low logic level to switch the switch circuit 15 to the second conduction state.

In some implementations, the user of the high-resolution multimedia interface device 1 can also manually set the operation mode of the high-resolution multimedia interface device 1 to determine whether the high-resolution multimedia interface device 1 is used as a master or a slave. As shown in FIG. 5, the housing 18 further includes a physical button 181 coupled to the control circuit 12. When the user of the high resolution multimedia interface device 1 touches the physical button 181, the physical button 181 can generate a touch signal. The driving control circuit 12 generates the control signal S5, thereby setting the conduction state of the switching circuit 15, so that the high resolution multimedia interface device 1 can be used as a slave or a master. For example, the physical button 181 can be a button for controlling the on screen display (OSD) of the display unit 16. When the user presses the physical button 181, the video adjustment function menu displayed by the display unit 16 is further included. More analysis The media interface device 1 serves as a setting option of the slave terminal or the master terminal. The user can switch the foregoing setting option by the physical button 181 to drive the control circuit 12 to generate a corresponding control signal S5, thereby setting the conduction state of the switch circuit 15.

Figure 6 is a perspective view showing an embodiment of a high resolution multimedia interface device connected to each other according to the present invention. Please refer to FIG. 6 , taking the two high-resolution multimedia interface devices 4 and 5 as the AIO computer as an example. When the two high-resolution multimedia interface devices 4 and 5 are powered on, the user must manually set two high-resolution multimedia devices manually. The conduction state of the switch circuit in the interface device 4, 5, or the user can set the conduction state of the switch circuit in one of the devices, for example, if the two high-resolution multimedia interface devices 4, 5 are preset as the master control The end (ie, the switch circuits of the two high-resolution multimedia interface devices 4, 5 are turned on in the first conductive state in the preset state), and the user must use one of the two switch circuits by the physical buttons 181, 182. Switching to the second conduction state enables normal HDMI communication between the two high resolution multimedia interface devices 4, 5.

In summary, according to an embodiment of the high-resolution multimedia interface device and the control method thereof, an HDMI port of the high-resolution multimedia interface device can be connected to the master device and the slave device. In this way, the high-resolution multimedia interface device can be used as the master terminal and the slave terminal. Compared with the prior art, the number of HDMI ports does not need to be increased, thereby saving the production cost of the high-resolution multimedia interface device. Moreover, the user does not need to visually recognize the HDMI connection as an input port or an output port, thus improving the usability.

The present invention has been disclosed in the above embodiments, and it is not intended to limit the present invention. Any one of ordinary skill in the art can make some modifications and refinements without departing from the spirit and scope of the present invention. The scope of the invention is defined by the scope of the appended patent application.

1‧‧‧High-resolution multimedia interface device

11‧‧‧High-resolution multimedia interface port埠

12‧‧‧Control circuit

13‧‧‧Master circuit

14‧‧‧Subordinate circuit

15‧‧‧Switch circuit

S1‧‧‧ Master high resolution multimedia interface output signal

S2‧‧‧Subordinate high-resolution multimedia interface input signal

S3‧‧‧Subordinate high-resolution multimedia interface output signal

S4‧‧‧Master high-resolution multimedia interface input signal

S5‧‧‧ control signal

Claims (15)

A high-resolution multimedia interface device includes: a high-resolution multimedia interface port; an embedded controller for generating a control signal; and a platform control center device coupled to the embedded controller for generating a master high resolution multimedia interface output signal; a slave circuit for generating a slave high resolution multimedia interface output signal; and a switch circuit coupled to the high resolution multimedia interface port and the embedded controller, The switch circuit is configured to selectively conduct a first conductive state and a second conductive state according to the control signal; when the switch circuit is conductive to the first conductive state, the switch circuit is electrically connected to the platform control central device, The main control high-resolution multimedia interface output signal is connected to the output through the high-resolution multimedia interface; when the switch circuit is turned on in the second conductive state, the switch circuit is electrically connected to the slave circuit, so that the slave high-resolution multimedia interface The output signal is connected to the output via the high resolution multimedia interface; wherein the platform controls the central device to receive a power on Driving the embedded controller generates the control signal so that the switching circuit is turned on in the first conductive state. The high resolution multimedia interface device of claim 1, wherein the platform control hub is further configured to receive a high resolution multimedia interface input signal from a high resolution multimedia interface port of a slave device, the slave circuit further The host is configured to receive a high-resolution multimedia interface input signal from a high-resolution multimedia interface port of a host device; and when the switch circuit is turned on the first conductive state, the platform controls the central device to pass the high-resolution multimedia The interface port receives the slave high resolution multimedia interface input signal; when the switch circuit is turned on In the second conducting state, the slave circuit receives the master high resolution multimedia interface input signal via the high resolution multimedia interface port. The high resolution multimedia interface device of claim 2, wherein the master high resolution multimedia interface output signal comprises a minimized transmission differential signal output signal and a power output signal, wherein the master high resolution multimedia interface input signal comprises a Minimizing the transmission of the differential signal input signal and the power input signal, the slave high resolution multimedia interface input signal includes an extended display identification information input signal and a hot plug detection input signal, and the dependent high resolution multimedia interface output signal includes an extension Display identification information output signal and a hot plug detection output signal. The high-resolution multimedia interface device of claim 3, wherein the embedded controller is coupled to the high-resolution multimedia interface port, and the switch circuit is conductive to the first conductive state according to a logic level of the control signal After the embedded controller receives the power input signal via the high resolution multimedia interface port, the embedded controller generates the control signal with another logic level, so that the switch circuit is turned on by the first switch. The state is switched to the second conduction state. The high-resolution multimedia interface device of claim 3, wherein the embedded controller is coupled to the slave circuit, and the switch circuit is conductive to the first conductive state according to a logic level of the control signal, if The embedded controller receives the extended display identification information output signal via the slave circuit, and the embedded controller generates the control signal with another logic level, so that the switch circuit is switched from the first conductive state to the first Two conduction states. The high resolution multimedia interface device of any one of claims 4 or 5, wherein the embedded controller is an embedded controller, the embedded controller receives a standby power supply to supply the slave circuit and The operation of the switching circuit. The high-resolution multimedia interface device of claim 1, further comprising a casing for accommodating the high-resolution multimedia interface port, the embedded controller, the platform control hub, and the slave circuit And the switch circuit, and the body is formed with a physical button for receiving a touch to generate a touch signal, and the embedded controller generates the corresponding control signal according to the touch signal. The high-resolution multimedia interface device of claim 7, further comprising a display unit disposed in the housing, wherein one of the video adjustment function menus displayed by the display unit further includes one of the on-state setting options of the switch circuit. The physical button receives the touch to change the setting option, so that the embedded controller generates the corresponding control signal. A control method for a high-resolution multimedia interface device, comprising: receiving a power-on power through a platform control hub to drive an embedded controller to control a switch circuit to be in a first conductive state; and controlling a central device via the platform to generate a The main control high-resolution multimedia interface output signal is electrically connected to the platform control central device and the high-resolution multimedia interface port in the first conductive state, so that the main control high-resolution multimedia interface output signal passes through the high Parsing the multimedia interface connection output; generating a dependent high resolution multimedia interface output signal via a slave circuit; and conducting a second conduction state via the switch circuit to electrically connect the slave circuit and the high resolution multimedia interface port, The dependent high resolution multimedia interface output signal is output via the high resolution multimedia interface. The control method of the high resolution multimedia interface device according to claim 9, further comprising: Receiving, by the high-resolution multimedia interface port, a high-resolution multimedia interface input signal from a high-resolution multimedia interface port of a slave device; electrically connecting the platform control hub and the high-resolution multimedia interface via the switch circuit The connection control unit enables the platform control hub to receive the slave high resolution multimedia interface input signal via the high resolution multimedia interface port; and receive the high resolution multimedia interface interface from a host device via the high resolution multimedia interface port. One of the master high-resolution multimedia interface input signals; and the slave circuit and the high-resolution multimedia interface port are electrically connected via the switch circuit, so that the slave circuit receives the master high-resolution multimedia through the high-resolution multimedia interface port Interface input signal. A high-resolution multimedia interface device includes: a high-resolution multimedia interface port; a control circuit coupled to the high-resolution multimedia interface port, the control circuit is configured to generate a control signal; and a master control circuit is configured to generate a a power output signal and a minimized differential signal output signal, and configured to receive an extended display identification information input signal and a hot plug detection input signal from a high resolution multimedia interface port of a slave device; The circuit is configured to generate an extended display identification information output signal and a hot plug detection output signal, and is configured to receive one of the high resolution multimedia interface ports from a host device to minimize the transmission of the differential signal input signal and a power input signal; and a switch circuit coupled to the high resolution multimedia interface port and the control circuit, the switch circuit for selectively conducting a first conductive state and a second conductive signal according to the control signal a switching state, wherein the switching circuit is electrically connected to the main control circuit, so that the minimized transmission differential signal output signal and the power output signal are connected through the high resolution multimedia interface. Outputting and receiving the extended display identification information input signal and the hot plug detection input signal through the high resolution multimedia interface port; when the switch circuit is turned on in the second conductive state, the switch circuit is electrically connected to the slave circuit The extended display identification information output signal and the hot plug detection output signal are output through the high resolution multimedia interface port, and the minimized transmission differential signal input signal and the power input are received via the high resolution multimedia interface port. a signal; wherein, after the switching circuit is turned on according to the logic level of the control signal, the control circuit generates the power input signal via the high resolution multimedia interface, and the control circuit generates another a logic level of the control signal to cause the switch circuit to be in the first conduction state A second transducer to the conducting state. A high-resolution multimedia interface device includes: a high-resolution multimedia interface port; a control circuit for generating a control signal; and a main control circuit for generating a power output signal and a minimum transmission differential signal output signal And extending a display identification information input signal and a hot plug detection input signal from a high resolution multimedia interface port of a slave device; a slave circuit coupled to the control circuit for generating an extension Displaying the identification information output signal and a hot plug detection output signal, and receiving one of the high resolution multimedia interface ports from a host device to minimize the transmission of the differential signal input signal and a power input signal; a switching circuit coupled to the high-resolution multimedia interface port and the control circuit, the switch circuit for selectively conducting a first conductive state and a second conductive state according to the control signal; when the switching circuit is turned on In the first conducting state, the switch circuit is electrically connected to the main control circuit, so that the minimized transmission differential signal output signal and the power output signal are output via the high resolution multimedia interface, and the high resolution multimedia is output The interface port receives the extended display identification information input signal and the hot plug detection input signal; when the switch circuit is turned on in the second conductive state, the switch circuit is electrically connected to the slave circuit, so that the extended display identification information output The signal and the hot plug detection output signal are connected to the output via the high resolution multimedia interface, and receive the minimized transmission differential signal input signal and the power input signal via the high resolution multimedia interface port; wherein, the switch circuit After the logic level of one of the control signals is turned on, the control power is Via the slave circuit receiving extended display identification information of the output signal, the control circuit generates the control signal having a logic level of the other, so that the switch circuit is switched from the first state to the second conductive conducting state. A high-resolution multimedia interface device includes: a high-resolution multimedia interface port; an embedded controller coupled to the high-resolution multimedia interface port, the embedded controller for generating a control signal; and a master control circuit For generating a power output signal and a minimizing transmission differential signal output signal, and for receiving an extended display identification information input signal and a hot plug detection from a high resolution multimedia interface port of a slave device Input signal a slave circuit for generating an extended display identification information output signal and a hot plug detection output signal, and for receiving a high resolution multimedia interface connection from a host device to minimize transmission differential signal input a signal and a power input signal; and a switch circuit coupled to the high resolution multimedia interface port and the embedded controller, the switch circuit for selectively turning on a first conductive state according to the control signal and a second conductive state; when the switch circuit is turned on in the first conductive state, the switch circuit is electrically connected to the main control circuit, so that the minimized differential signal output signal and the power output signal are transmitted through the high resolution multimedia The interface is connected to the output, and the extended display identification information input signal and the hot plug detection input signal are received through the high resolution multimedia interface port; when the switch circuit is turned on in the second conductive state, the switch circuit is electrically connected to the switch circuit The slave circuit causes the extended display identification information output signal and the hot plug detection output signal to pass through the high resolution multimedia medium And outputting the minimized transmission differential signal input signal and the power input signal through the high resolution multimedia interface port; wherein the switch circuit is conductive to the first conduction according to a logic level of the control signal After the state, if the embedded controller receives the power input signal via the high resolution multimedia interface port, the embedded controller generates the control signal with another logic level, so that the switch circuit is configured by the first The conductive state is switched to the second conductive state; wherein the embedded controller receives a standby power supply to supply the slave circuit and the operation of the switch circuit. A high-resolution multimedia interface device includes: a high-resolution multimedia interface port; an embedded controller for generating a control signal; a main control circuit for generating a power output signal and a minimizing transmission differential signal output signal, and for receiving a high resolution multimedia interface port from a slave device to extend the display identification information input signal and The hot plug detects the input signal; a slave circuit coupled to the embedded controller for generating an extended display identification information output signal and a hot plug detection output signal for receiving from a host device One of the high-resolution multimedia interface ports minimizes the transmission of the differential signal input signal and a power input signal; and a switch circuit coupled to the high-resolution multimedia interface port and the embedded controller, the switch circuit Selectively conducting a first conductive state and a second conductive state according to the control signal; when the switching circuit is conductive to the first conductive state, the switching circuit is electrically connected to the main control circuit to minimize the Transmitting the differential signal output signal and the power output signal via the high resolution multimedia interface connection and outputting through the high resolution multimedia interface Receiving the extended display identification information input signal and the hot plug detection input signal; when the switch circuit is turned on in the second conductive state, the switch circuit is electrically connected to the slave circuit, so that the extended display identification information output signal and the The hot plug detection output signal is connected to the output via the high resolution multimedia interface, and receives the minimized transmission differential signal input signal and the power input signal via the high resolution multimedia interface port; wherein the switch circuit is controlled according to the control After the logic level of one of the signals is conducted in the first conductive state, if the embedded controller receives the extended display identification information output signal via the slave circuit, the embedded controller generates the logic level having another logic level. Controlling the signal to switch the switch circuit from the first conductive state to the second conductive state; The embedded controller receives a standby power supply to supply the slave circuit and the operation of the switch circuit. A high-resolution multimedia interface device includes: a high-resolution multimedia interface port; a control circuit for generating a control signal; a master circuit for generating a master high-resolution multimedia interface output signal; and a slave circuit The switch circuit is configured to be coupled to the high-resolution multimedia interface port and the control circuit, and the switch circuit is configured to selectively conduct a first conductive state according to the control signal. And a second conductive state; when the switch circuit is turned on in the first conductive state, the switch circuit is electrically connected to the main control circuit, so that the main control high-resolution multimedia interface output signal is connected and outputted through the high-resolution multimedia interface When the switch circuit is turned on in the second conductive state, the switch circuit is electrically connected to the slave circuit, so that the slave high resolution multimedia interface output signal is output through the high resolution multimedia interface; a display unit displays a video Adjusting the function menu, the video adjustment function menu includes the on state of the switch circuit a setting option; and a casing accommodating the high resolution multimedia interface port, the control circuit, the main control circuit, the slave circuit, the switch circuit and the display unit, wherein the housing is formed with a physical button, The physical button receives a touch to generate a touch signal that changes the setting option, so that the control circuit generates the corresponding control signal according to the touch signal.