WO2021036207A1 - Dispositif d'affichage - Google Patents

Dispositif d'affichage Download PDF

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Publication number
WO2021036207A1
WO2021036207A1 PCT/CN2020/075959 CN2020075959W WO2021036207A1 WO 2021036207 A1 WO2021036207 A1 WO 2021036207A1 CN 2020075959 W CN2020075959 W CN 2020075959W WO 2021036207 A1 WO2021036207 A1 WO 2021036207A1
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WO
WIPO (PCT)
Prior art keywords
control terminal
selection signal
level
electrically connected
resistor
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PCT/CN2020/075959
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English (en)
Chinese (zh)
Inventor
金飞
杨龙
Original Assignee
海信视像科技股份有限公司
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Application filed by 海信视像科技股份有限公司 filed Critical 海信视像科技股份有限公司
Publication of WO2021036207A1 publication Critical patent/WO2021036207A1/fr

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
    • H04N5/00—Details of television systems
    • H04N5/76—Television signal recording
    • H04N5/765—Interface circuits between an apparatus for recording and another apparatus

Definitions

  • This application relates to the field of electronic technology, in particular to a circuit board, a preparation method thereof, and a display device.
  • the display device is generally provided with multiple HDMI (High Definition Multimedia Interface, high-definition multimedia interface) input interfaces.
  • HDMI High Definition Multimedia Interface, high-definition multimedia interface
  • the main control chip pre-stores the relationship between the preset selection signal set in advance and the interface definition of the HDMI switch chip. In this way, the main control chip inputs selection signals to the pins PORT_SEL[1] and PORT_SEL[0] of the HDMI chip to control the HDMI chip to output the signals input to the corresponding HDMI input interface to the main control chip.
  • the types of HDMI chips are different, and the selection signals corresponding to the HDMI input interfaces are different. In this way, after the selection signal corresponding to the HDMI input interface in the HDMI switch chip changes, the flexible conversion of the HDMI input interface cannot be realized, which leads to greater limitations. .
  • the embodiments of the present application provide a circuit board, a manufacturing method thereof, and a display device, which are used to solve the problem that the flexible conversion of the HDMI input interface cannot be realized in the related art, which causes a large limitation.
  • the embodiment of the present application provides a display device, including: a circuit board;
  • the circuit board includes: an HDMI switch chip, a main control chip, and coupling components;
  • the main control chip pre-stores the relationship between a plurality of preset selection signals and the interface definition of the HDMI switch chip;
  • the HDMI switch chip pre-stores a plurality of relationships between target selection signals and interface definitions
  • the coupling component is configured to be electrically connected to the selection control terminal of the main control chip according to the relationship between a plurality of preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip And the output control terminal of the HDMI switch chip.
  • the multiple target selection signals include: a first target selection signal, a second target selection signal, and a third target selection signal; wherein, the first target selection signal corresponds to A first interface definition, the second target selection signal corresponds to a second interface definition, and the third target selection signal corresponds to a third interface definition;
  • the multiple preset selection signals include: a first preset selection signal, a second preset selection signal, and a third preset selection signal; wherein, the first preset selection signal corresponds to the first interface definition, so The second preset selection signal corresponds to the second interface definition, and the third preset selection signal corresponds to the third interface definition.
  • the level of the first target selection signal is the same as the level of the first preset selection signal, and the level of the second target selection signal is the same as the level of the first preset selection signal.
  • the level of the second preset selection signal is the same, and the level of the third target selection signal is the same as the level of the third preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a first coupling line and a second coupling line; wherein the first selection control terminal is electrically connected to the first output control terminal through the first coupling line, and the second selection control The terminal is electrically connected to the second output control terminal through the second coupling line.
  • the level of the first target selection signal is the same as the level of the second preset selection signal, and the level of the second target selection signal is the same as the level of the second preset selection signal.
  • the level of the first preset selection signal is the same, and the level of the third target selection signal is the same as the level of the third preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a third coupling line, a first diode, a second diode, a first resistor, a second resistor, a third resistor, and a first switch;
  • the first selection control terminal is electrically connected to the first output control terminal through the third coupling line;
  • the anode of the first diode is electrically connected to the first selection control terminal, and the cathode of the first diode is electrically connected to the first end of the first resistor;
  • the anode of the second diode is electrically connected to the second selection control terminal, and the cathode of the second diode is electrically connected to the first terminal of the first resistor;
  • the second end of the first resistor is electrically connected to the control end of the first switch
  • the first end of the second resistor is electrically connected to the ground end, and the second end of the second resistor is electrically connected to the first end of the first resistor;
  • the first terminal of the first switch is electrically connected to the ground terminal, and the second terminal of the first switch is electrically connected to the first terminal of the third resistor and the second output control terminal respectively;
  • the second end of the third resistor is electrically connected to the high voltage signal end.
  • the level of the first target selection signal is the same as the level of the first preset selection signal, and the level of the second target selection signal is the same as the level of the first preset selection signal.
  • the level of the third preset selection signal is the same, and the level of the third target selection signal is the same as the level of the second preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a fourth coupling line and a fifth coupling line; wherein the first selection control terminal is electrically connected to the second output control terminal through the fourth coupling line, and the second selection control The terminal is electrically connected to the first output control terminal through the fifth coupling line.
  • the level of the first target selection signal is the same as the level of the third preset selection signal, and the level of the second target selection signal is the same as the level of the third preset selection signal.
  • the level of the first preset selection signal is the same, and the level of the third target selection signal is the same as the level of the second preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a sixth coupling line, a third diode, a fourth diode, a fourth resistor, a fifth resistor, a sixth resistor, and a second switch;
  • the first selection control terminal is electrically connected to the second output control terminal through the sixth coupling line;
  • the anode of the third diode is electrically connected to the first selection control terminal, and the third and second The negative electrode of the pole tube is electrically connected to the first end of the fourth resistor;
  • the anode of the fourth diode is electrically connected to the second selection control terminal, and the cathode of the fourth diode is electrically connected to the first end of the fourth resistor;
  • the second end of the fourth resistor is electrically connected to the control end of the second switch
  • the first end of the fifth resistor is electrically connected to the ground end, and the second end of the fifth resistor is electrically connected to the first end of the fourth resistor;
  • the first terminal of the second switch is electrically connected to the ground terminal, and the second terminal of the second switch is electrically connected to the first terminal of the sixth resistor and the first output control terminal respectively;
  • the second end of the sixth resistor is electrically connected to the high voltage signal end.
  • the level of the first target selection signal is the same as the level of the third preset selection signal, and the level of the second target selection signal is the same as the level of the third preset selection signal.
  • the level of the second preset selection signal is the same, and the level of the third target selection signal is the same as the level of the first preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a seventh coupling line, a fifth diode, a sixth diode, a seventh resistor, an eighth resistor, a ninth resistor, and a third switch;
  • the second selection control terminal is electrically connected to the second output control terminal through the seventh coupling line;
  • the anode of the fifth diode is electrically connected to the first selection control terminal, and the cathode of the fifth diode is electrically connected to the first end of the seventh resistor;
  • the anode of the sixth diode is electrically connected to the second selection control terminal, and the cathode of the sixth diode is electrically connected to the first terminal of the seventh resistor;
  • the second end of the seventh resistor is electrically connected to the control end of the third switch
  • the first end of the eighth resistor is electrically connected to the ground end, and the second end of the eighth resistor is electrically connected to the first end of the seventh resistor;
  • the first terminal of the third switch is electrically connected to the ground terminal, and the second terminal of the third switch is electrically connected to the first terminal of the ninth resistor and the first output control terminal respectively;
  • the second end of the ninth resistor is electrically connected to the high voltage signal end.
  • the level of the first target selection signal is the same as the level of the second preset selection signal, and the level of the second target selection signal is the same as the level of the second preset selection signal.
  • the level of the third preset selection signal is the same, and the level of the third target selection signal is the same as the level of the first preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: an eighth coupling line, a seventh diode, an eighth diode, a tenth resistor, an eleventh resistor, a twelfth resistor, and a fourth switch;
  • the second selection control terminal is electrically connected to the first output control terminal through the eighth coupling line;
  • the anode of the seventh diode is electrically connected to the first selection control terminal, and the cathode of the seventh diode is electrically connected to the first terminal of the tenth resistor;
  • the anode of the eighth diode is electrically connected to the second selection control terminal, and the cathode of the eighth diode is electrically connected to the first end of the tenth resistor;
  • the second end of the tenth resistor is electrically connected to the control end of the fourth switch
  • the first end of the eleventh resistor is electrically connected to the ground end, and the second end of the eleventh resistor is electrically connected to the first end of the tenth resistor;
  • the first terminal of the fourth switch is electrically connected to the ground terminal, and the second terminal of the fourth switch is electrically connected to the first terminal of the twelfth resistor and the second output control terminal respectively;
  • the second end of the twelfth resistor is electrically connected to the high voltage signal end.
  • the embodiment of the present application also provides a method for manufacturing a circuit board, the circuit board includes: an HDMI switch chip and a main control chip;
  • one said interface definition corresponds to one said preset selection signal and one said target selection signal;
  • the coupling component is electrically connected to the selection control terminal of the main control chip and the Between the output control terminals of the HDMI switch chip.
  • the embodiment of the present application also provides a circuit board prepared by the above preparation method, the circuit board includes: an HDMI switch chip, a main control chip, and coupling components;
  • the main control chip pre-stores the relationship between a plurality of preset selection signals and the interface definition of the HDMI switch chip;
  • the HDMI switch chip pre-stores a plurality of relationships between target selection signals and interface definitions
  • the coupling component is configured to be electrically connected to the selection control terminal of the main control chip according to the relationship between a plurality of preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip And the output control terminal of the HDMI switch chip.
  • the present application also provides a display device, including:
  • the display screen is configured to present an image screen
  • the speaker is configured to reproduce sound data
  • a controller configured to determine the relationship between the multiple preset selection signals stored in advance and the interface definition of the HDMI switch chip, and the relationship between the multiple target selection signals stored in advance by the HDMI switch chip and the interface definition;
  • the coupling component is electrically connected to the selection control terminal of the main control chip and the output control of the HDMI switch chip Between ends.
  • one said interface definition corresponds to one said preset selection signal and one said target selection signal.
  • the controller is configured such that the multiple target selection signals include: a first target selection signal, a second target selection signal, and a third target selection signal; wherein, the first target selection signal corresponds to the first target selection signal.
  • Interface definition the second target selection signal corresponds to a second interface definition
  • the third target selection signal corresponds to a third interface definition
  • the multiple preset selection signals include: a first preset selection signal, a second preset selection signal, and a third preset selection signal; wherein, the first preset selection signal corresponds to the first interface definition, so The second preset selection signal corresponds to the second interface definition, and the third preset selection signal corresponds to the third interface definition.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the first preset selection signal, and the level of the second target selection signal is the same as the level of the second target selection signal.
  • the level of the preset selection signal is the same, and the level of the third target selection signal is the same as the level of the third preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a first coupling line and a second coupling line; wherein the first selection control terminal is electrically connected to the first output control terminal through the first coupling line, and the second selection control The terminal is electrically connected to the second output control terminal through the second coupling line.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the second preset selection signal, and the level of the second target selection signal is the same as that of the first The level of the preset selection signal is the same, and the level of the third target selection signal is the same as the level of the third preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a third coupling line, a first diode, a second diode, a first resistor, a second resistor, a third resistor, and a first switch;
  • the first selection control terminal is electrically connected to the first output control terminal through the third coupling line;
  • the anode of the first diode is electrically connected to the first selection control terminal, and the cathode of the first diode is electrically connected to the first end of the first resistor;
  • the anode of the second diode is electrically connected to the second selection control terminal, and the cathode of the second diode is electrically connected to the first terminal of the first resistor;
  • the second end of the first resistor is electrically connected to the control end of the first switch
  • the first end of the second resistor is electrically connected to the ground end, and the second end of the second resistor is electrically connected to the first end of the first resistor;
  • the first terminal of the first switch is electrically connected to the ground terminal, and the second terminal of the first switch is electrically connected to the first terminal of the third resistor and the second output control terminal respectively;
  • the second end of the third resistor is electrically connected to the high voltage signal end.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the first preset selection signal, and the level of the second target selection signal is the same as the level of the third target selection signal.
  • the level of the preset selection signal is the same, and the level of the third target selection signal is the same as the level of the second preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a fourth coupling line and a fifth coupling line; wherein the first selection control terminal is electrically connected to the second output control terminal through the fourth coupling line, and the second selection control The terminal is electrically connected to the first output control terminal through the fifth coupling line.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the third preset selection signal, and the level of the second target selection signal is the same as the level of the first target selection signal.
  • the level of the preset selection signal is the same, and the level of the third target selection signal is the same as the level of the second preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a sixth coupling line, a third diode, a fourth diode, a fourth resistor, a fifth resistor, a sixth resistor, and a second switch;
  • the first selection control terminal is electrically connected to the second output control terminal through the sixth coupling line;
  • the anode of the third diode is electrically connected to the first selection control terminal, and the third and second The negative electrode of the pole tube is electrically connected to the first end of the fourth resistor;
  • the anode of the fourth diode is electrically connected to the second selection control terminal, and the cathode of the fourth diode is electrically connected to the first end of the fourth resistor;
  • the second end of the fourth resistor is electrically connected to the control end of the second switch
  • the first end of the fifth resistor is electrically connected to the ground end, and the second end of the fifth resistor is electrically connected to the first end of the fourth resistor;
  • the first terminal of the second switch is electrically connected to the ground terminal, and the second terminal of the second switch is electrically connected to the first terminal of the sixth resistor and the first output control terminal respectively;
  • the second end of the sixth resistor is electrically connected to the high voltage signal end.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the third preset selection signal, and the level of the second target selection signal is the same as the level of the second target selection signal.
  • the level of the second preset selection signal is the same, and the level of the third target selection signal is the same as the level of the first preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a seventh coupling line, a fifth diode, a sixth diode, a seventh resistor, an eighth resistor, a ninth resistor, and a third switch;
  • the second selection control terminal is electrically connected to the second output control terminal through the seventh coupling line;
  • the anode of the fifth diode is electrically connected to the first selection control terminal, and the cathode of the fifth diode is electrically connected to the first end of the seventh resistor;
  • the anode of the sixth diode is electrically connected to the second selection control terminal, and the cathode of the sixth diode is electrically connected to the first terminal of the seventh resistor;
  • the second end of the seventh resistor is electrically connected to the control end of the third switch
  • the first end of the eighth resistor is electrically connected to the ground end, and the second end of the eighth resistor is electrically connected to the first end of the seventh resistor;
  • the first terminal of the third switch is electrically connected to the ground terminal, and the second terminal of the third switch is electrically connected to the first terminal of the ninth resistor and the first output control terminal respectively;
  • the second end of the ninth resistor is electrically connected to the high voltage signal end.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the second preset selection signal, and the level of the second target selection signal is the same as the level of the second preset selection signal.
  • the level of the third preset selection signal is the same, and the level of the third target selection signal is the same as the level of the first preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: an eighth coupling line, a seventh diode, an eighth diode, a tenth resistor, an eleventh resistor, a twelfth resistor, and a fourth switch;
  • the second selection control terminal is electrically connected to the first output control terminal through the eighth coupling line;
  • the anode of the seventh diode is electrically connected to the first selection control terminal, and the cathode of the seventh diode is electrically connected to the first end of the tenth resistor;
  • the anode of the eighth diode is electrically connected to the second selection control terminal, and the cathode of the eighth diode is electrically connected to the first end of the tenth resistor;
  • the second end of the tenth resistor is electrically connected to the control end of the fourth switch
  • the first end of the eleventh resistor is electrically connected to the ground end, and the second end of the eleventh resistor is electrically connected to the first end of the tenth resistor;
  • the first terminal of the fourth switch is electrically connected to the ground terminal, and the second terminal of the fourth switch is electrically connected to the first terminal of the twelfth resistor and the second output control terminal respectively;
  • the second end of the twelfth resistor is electrically connected to the high voltage signal end.
  • the circuit board, the preparation method and the display device provided in the embodiments of the application can be selected according to the relationship between the multiple preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip.
  • a coupling component is provided between the control terminal and the output control terminal of the HDMI switch chip to convert the selection signal output by the selection control terminal of the main control chip through the coupling component to provide the output control terminal of the HDMI switch chip, so as to form Improved circuit board adaptability.
  • Fig. 1 is a schematic diagram of the structure of a circuit board in the related art
  • FIG. 2 is a flowchart of a method for manufacturing a circuit board provided by an embodiment of the application
  • FIG. 3 is a schematic diagram of a specific structure of a circuit board provided by an embodiment of the application.
  • FIG. 4 is a schematic diagram of a specific structure of yet another circuit board provided by an embodiment of the application.
  • FIG. 5 is a schematic diagram of a specific structure of yet another circuit board provided by an embodiment of the application.
  • FIG. 6 is a schematic diagram of a specific structure of yet another circuit board provided by an embodiment of the application.
  • FIG. 7 is a schematic diagram of a specific structure of yet another circuit board provided by an embodiment of the application.
  • FIG. 8 is a schematic diagram of a specific structure of another circuit board provided by an embodiment of the application.
  • FIG. 9 is a schematic diagram of a display device provided in Embodiment 1 of the present application.
  • FIG. 10 is a block diagram of the hardware configuration of the display device provided in Embodiment 1 of the present application.
  • the circuit board of the display device is generally provided with multiple HDMI (High Definition Multimedia Interface, high-definition multimedia interface) input interfaces.
  • Figure 1 is a schematic diagram of the structure of a circuit board. As shown in conjunction with FIG. 1, the circuit board may include: an HDMI switch chip 10 and a main control chip 20.
  • HDMI switch chip 10 in the clockwise direction, there are HDMI output interface 01, HDMI input interface 02, HDMI input interface 03, HDMI input interface 04, and external signals (such as DVD signals) from HDMI input interface 02, HDMI Input interface 03, 1 input in HDMI input interface 04, through the main control chip 20 to input the selection signal to the pins PORT_SEL[0] and PORT_SEL[1] of the HDMI switch chip 10, and control the pins PORT_SEL[0] and PORT_SEL[ 1] to control the HDMI switch chip 10 to select which HDMI input interface signal is output from the output interface 01.
  • the HDMI switch chip 10 can select the signal of the HDMI input interface 03 to be output from the output interface 01 for transmission to the main control chip 20.
  • the HDMI switch chip 10 can select the signal of the HDMI input interface 04 to be output from the output interface 01 for transmission to the main control chip 20.
  • the HDMI signal is a high-speed signal, it is easy to be interfered by other signals and affect the transmission accuracy. Therefore, when designing the circuit board, the signal lines cannot be crossed, and the holes cannot be cross-layered.
  • the layout structure of the circuit board in different display devices is different, which causes the HDMI input interface of the HDMI switch chip on the circuit board to not correspond to the levels of the input pins PORT_SEL[0] and PORT_SEL[1] of the main control chip.
  • the software stored in the main control chip can be set to adjust the pre-stored selection signal in the main control chip. Thereby adjusting the level of the input pins PORT_SEL[0] and PORT_SEL[1].
  • the embodiments of the present application provide a method for preparing a circuit board, which can prepare different display devices used in different display devices without changing the software and without changing the structure of the HDMI switch chip and the main control chip. Circuit board structure.
  • the embodiment of the present application provides a method for manufacturing a circuit board, as shown in FIG. 2, which may include the following steps:
  • S201 Determine the relationship between the multiple preset selection signals pre-stored in the main control chip and the interface definition of the HDMI switch chip, and the relationship between the multiple target selection signals pre-stored by the HDMI switch chip and the interface definition; among them, one
  • the interface definition corresponds to a preset selection signal and a target selection signal;
  • the preparation method of the circuit board provided by the embodiment of the application can be based on the relationship between the multiple preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip.
  • a coupling component is provided between the output control terminals of the switch chip to convert the selection signal output by the selection control terminal of the main control chip through the coupling component to provide the output control terminal of the HDMI switch chip, so that the formed circuit board can be adapted to Improved compatibility.
  • the circuit board may be a printed circuit board (Printed Circuit Board, PCB).
  • PCB printed Circuit Board
  • other circuits other than the HDMI switch chip and the main control chip may be provided on the printed circuit board, which may be basically the same as the existing structure, and will not be repeated here.
  • the circuit board may include: an HDMI switch chip 100 and a main control chip 200.
  • the HDMI switch chip 100 has multiple HDMI input interfaces.
  • the HDMI switch chip 100 may have three HDMI input interfaces, such as a first HDMI input interface 110, a second HDMI input interface 120, and a third HDMI input interface 130.
  • the HDMI switch chip 100 may have 4, 5, 6 or more HDMI input interfaces, which can be designed and determined according to the actual application environment, which is not limited here.
  • the output control terminal of the HDMI switch chip 100 may include: a first output control terminal PS1 and a second output control terminal PS2.
  • the first output control terminal PS1 may be the aforementioned pin PORT_SEL[1]
  • the second output control terminal PS2 may be the aforementioned pin PORT_SEL[0].
  • the structure and working principle of the HDMI switch chip can be basically the same as those in related technologies, and will not be repeated here.
  • the interface definition of the HDMI switch chip may include: a first interface definition, a second interface definition, and a third interface definition.
  • the first target selection signal corresponds to the first interface definition, so that when the first target selection signal is input at the pin PORT_SEL[1] and pin PORT_SEL[0], the HDMI switch chip will The signal input to the first HDMI input interface 110 is provided to the main control signal 200.
  • the first target selection signal may include: a first sub-target selection signal having a first level (for example, a low level or a high level) and a second sub-target selection signal having the first level.
  • a low-level first sub-target selection signal is input to the pin PORT_SEL[1], so that the level of the pin PORT_SEL[1] is low.
  • the low-level second sub-target selection signal is output through the pin PORT_SEL[0], so that the level of the pin PORT_SEL[0] is low.
  • the second target selection signal corresponds to the second interface definition, so when the second target selection signal is input at the pins PORT_SEL[1] and PORT_SEL[0], the HDMI switch chip will input the signal of the second HDMI input interface 120 Provided to the main control signal 200.
  • the second target selection signal may include: a third sub-target selection signal having a first level (for example, a low level or a high level) and a second level (for example, a high level or a low level).
  • a low-level third sub-target selection signal is input to the pin PORT_SEL[1], so that the level of the pin PORT_SEL[1] is low.
  • the high-level fourth sub-target selection signal is output through the pin PORT_SEL[0], so that the level of the pin PORT_SEL[0] is high.
  • the third target selection signal corresponds to the third interface definition, so when the third target selection signal is input at the pins PORT_SEL[1] and PORT_SEL[0], the HDMI switch chip will input the signal of the third HDMI input interface 130 Provided to the main control signal 200.
  • the third target selection signal may include: a fifth sub-target selection signal having a second level (for example, a high level or a low level) and a first level (for example, a low level or a high level).
  • Six sub-target selection signals For example, a high-level fifth sub-target selection signal is input to the pin PORT_SEL[1], so that the level of the pin PORT_SEL[1] is high.
  • the low-level sixth sub-target selection signal is output through the pin PORT_SEL[0], so that the level of the pin PORT_SEL[0] is low.
  • the selection control terminal may include: a first selection control terminal SEL1 and a second selection control terminal SEL2.
  • the first selection control terminal SEL1 may be the pin SEL[1] of the above-mentioned main control chip 200
  • the second selection control terminal SEL2 may be the pin SEL[0] of the above-mentioned main control chip 200.
  • the structure and working principle of the main control chip can be basically the same as those in the related art, and will not be repeated here.
  • the main control chip 200 pre-stores multiple preset selection signals and multiple interface definitions.
  • the plurality of preset selection signals may include: a first preset selection signal, a second preset selection signal, and a third preset selection signal.
  • the first preset selection signal corresponds to the first interface definition.
  • the first preset selection signal may include: a first sub-preset selection signal having a first level (for example, a low level) and a second sub-preset selection signal having a first level.
  • the low-level first sub-preset selection signal is output through the pin SEL[1], so that the level of the pin SEL[1] is low.
  • the low-level second sub-preset selection signal is output through the pin SEL[0], so that the level of the pin SEL[0] is low.
  • the second preset selection signal corresponds to the second interface definition.
  • the second preset selection signal may include: a third sub-preset selection signal having a first level (for example, a low level) and a fourth sub-preset selection signal having a second level (for example, a high level) .
  • the low-level third sub-preset selection signal is output through the pin SEL[1], so that the level of the pin SEL[1] is low.
  • the high-level fourth sub-preset selection signal is output through the pin SEL[0], so that the level of the pin SEL[0] is high.
  • the third preset selection signal corresponds to the third interface definition.
  • the third preset selection signal may include: a fifth sub-preset selection signal having a second level (for example, a high level) and a sixth sub-preset selection signal having a first level (for example, a low level) .
  • the high-level fifth sub-preset selection signal is output through the pin SEL[1], so that the level of the pin SEL[1] is high.
  • the low-level sixth sub-preset selection signal is output through the pin PORT_SEL[0], so that the level of the pin SEL[0] is low.
  • the relationship between the multiple preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip may be as follows: the level of the first target selection signal and the first preset selection signal
  • the level of the second target selection signal is the same as the level of the second preset selection signal
  • the level of the third target selection signal is the same as the level of the third preset selection signal.
  • the coupling component 300 may include: a first coupling line S1 and a second coupling line S2; wherein, the first selection control terminal SEL1 is connected to the first output via the first coupling line S1.
  • the control terminal PS1 is electrically connected, and the second selection control terminal SEL2 is electrically connected to the second output control terminal PS2 through the second coupling wire S2.
  • the level of the first target selection signal is the same as the level of the first preset selection signal, which refers to: the level A1 of the first sub-target selection signal is the same as that of the first sub-target selection signal.
  • the level B1 of the preset selection signal is the same, and the level A2 of the second sub-target selection signal is the same as the level B2 of the second sub-preset selection signal.
  • the level of the second target selection signal is the same as the level of the second preset selection signal, which means: the level A3 of the third sub-target selection signal is the same as the level B3 of the third sub-preset selection signal, and the fourth The level A4 of the sub-target selection signal is the same as the level B4 of the fourth sub-preset selection signal.
  • the level of the third target selection signal is the same as the level of the third preset selection signal, which refers to: the level A5 of the fifth sub-target selection signal is the same as the level B5 of the fifth sub-preset selection signal, and the sixth The level A6 of the sub-target selection signal is the same as the level B6 of the sixth sub-preset selection signal.
  • “O” means the same
  • “—” means not to consider, the following meanings are the same, and will not be pointed out.
  • the main control chip 200 outputs a first sub-preset selection signal with a low level through the first selection control terminal SEL1, and the first sub-preset selection signal is input to the first output control terminal through the first coupling wire S1 PS1, so that the first output control terminal PS1 is at a low level (that is, 0).
  • the main control chip 200 outputs a second sub-preset selection signal with a low level through the second selection control terminal SEL2, and the second sub-preset selection signal is input to the second output control terminal PS2 through the second coupling wire S2, so that the second The output control terminal PS2 is low level.
  • the HDMI chip 200 can output the signal of the first HDMI input interface 110 defined by the first interface to the main control chip 200.
  • the main control chip 200 outputs a third sub-preset selection signal with a low level through the first selection control terminal SEL1, and the third sub-preset selection signal is input to the first output control terminal PS1 through the first coupling wire S1, so that the first The output control terminal PS1 is low level.
  • the main control chip 200 outputs a fourth sub-preset selection signal with a high level through the second selection control terminal SEL2, and the fourth sub-preset selection signal is input to the second output control terminal PS2 through the second coupling wire S2, so that the second The output control terminal PS2 is at a high level (that is, 1).
  • the HDMI chip 200 can output the signal of the second HDMI input interface 120 defined by the second interface to the main control chip 200.
  • the main control chip 200 outputs a fifth sub-preset selection signal with a high level through the first selection control terminal SEL1, and the fifth sub-preset selection signal is input to the first output control terminal PS1 through the first coupling wire S1, so that the first The output control terminal PS1 is high.
  • the main control chip 200 outputs a sixth sub-preset selection signal with a low level through the second selection control terminal SEL2, and the sixth sub-preset selection signal is input to the second output control terminal PS2 through the second coupling wire S2, so that the second The output control terminal PS2 is low level.
  • the HDMI chip 200 can output the signal of the third HDMI input interface 130 defined by the third interface to the main control chip 200.
  • the relationship between the multiple preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip may be as follows: the level of the first target selection signal and the second preset selection signal The level of the second target selection signal is the same as the level of the first preset selection signal, and the level of the third target selection signal is the same as the level of the third preset selection signal. In this way, the target selection signal defined corresponding to the second interface is different from the preset selection signal, and the target selection signal defined corresponding to the third interface is different from the preset selection signal.
  • the coupling part can be designed so that the preset selection signal can be converted by the coupling part, so that the converted target selection signal can control the HDMI switch chip to select the HDMI input interface defined by the corresponding interface, and then realize the input HDMI input interface The signal is accurately output to the main control chip.
  • the level of the first target selection signal is the same as the level of the second preset selection signal, which refers to: the level A1 of the first sub-target selection signal and the level of the third sub-target selection signal.
  • the level B3 of the preset selection signal is the same, and the level A2 of the second sub-target selection signal is the same as the level B4 of the fourth sub-preset selection signal.
  • the level of the second target selection signal is the same as the level of the first preset selection signal, which means: the level A3 of the third sub-target selection signal is the same as the level B1 of the first sub-preset selection signal, and the fourth The level A4 of the sub-target selection signal is the same as the level B2 of the second sub-preset selection signal.
  • the level of the third target selection signal is the same as the level of the third preset selection signal, which refers to: the level A5 of the fifth sub-target selection signal is the same as the level B5 of the fifth sub-preset selection signal, and the sixth The level A6 of the sub-target selection signal is the same as the level B6 of the sixth sub-preset selection signal.
  • the coupling component 300 may include: a third coupling wire S3, a first diode VD1, a second diode VD2, a first resistor R1, a second resistor R2, The third resistor R3 and the first switch M1;
  • the first selection control terminal SEL1 is electrically connected to the first output control terminal PS1 through the third coupling wire S3;
  • the anode of the first diode VD1 is electrically connected to the first selection control terminal SEL1, and the cathode of the first diode VD1 is electrically connected to the first end of the first resistor R1;
  • the anode of the second diode VD2 is electrically connected to the second selection control terminal SEL2, and the cathode of the second diode VD2 is electrically connected to the first end of the first resistor R1;
  • the second end of the first resistor R1 is electrically connected to the control end of the first switch M1;
  • the first end of the second resistor R2 is electrically connected to the ground terminal GND, and the second end of the second resistor R2 is electrically connected to the first end of the first resistor R1;
  • the first terminal of the first switch M1 is electrically connected to the ground terminal GND, and the second terminal of the first switch M1 is electrically connected to the first terminal of the third resistor R3 and the second output control terminal PS2, respectively;
  • the second terminal of the third resistor R3 is electrically connected to the high voltage signal terminal VDD.
  • the first switch M1 may be a triode or a metal oxide semiconductor field effect transistor (MOS, Metal Oxide Semiconductor), which is not limited herein.
  • MOS Metal Oxide Semiconductor
  • the structure of the first diode VD1 and the second diode VD2 may be basically the same as the structure of the diode in the prior art, and will not be repeated here.
  • the resistance value of the first resistor R1 may be 4.7 k ⁇
  • the resistance value of the second resistor R2 may be 47 k ⁇
  • the resistance value of the third resistor R3 may be 4.7 k ⁇ .
  • the resistance value of the first resistor R1, the resistance value of the second resistor R2, and the resistance value of the third resistor R3 can be designed and determined according to the actual application environment, which is not limited here.
  • the main control chip 200 outputs a first sub-preset selection signal with a low level through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is a low level, so that the first output control terminal PS1 The level is low.
  • the second sub-preset selection signal with a low level is output through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is a low level.
  • the first switch M1 is controlled to be turned off, so that the level of the second output control terminal PS2 is high.
  • the HDMI chip 200 can output the signal of the first HDMI input interface 110 defined by the first interface to the main control chip 200.
  • the main control chip 200 outputs the third sub-preset selection signal with a low level through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is a low level, so that the power of the first output control terminal PS1 The level is low.
  • the fourth sub-preset selection signal with a high level is output through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is high level. Both ends of the first diode VD1 are disconnected, and the second diode VD2 is turned on, and the first switch M1 is controlled to be turned on, so that the level of the second output control terminal PS2 is low. In this way, the HDMI chip 200 can output the signal of the second HDMI input interface 120 defined by the second interface to the main control chip 200.
  • the main control chip 200 outputs the fifth sub-preset selection signal with a high level through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is high level, so that the power of the first output control terminal PS1 Level is high.
  • the sixth sub-preset selection signal with a low level is output through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is a low level.
  • the first diode VD1 is turned on, and both ends of the second diode VD2 are turned off, and the first switch M1 is controlled to be turned on, so that the level of the second output control terminal PS2 is low.
  • the HDMI chip 200 can output the signal of the third HDMI input interface 130 defined by the third interface to the main control chip 200.
  • the relationship between the multiple preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip may be as follows: the level of the first target selection signal and the first preset selection signal
  • the level of the second target selection signal is the same as the level of the third preset selection signal
  • the level of the third target selection signal is the same as the level of the second preset selection signal.
  • the coupling part can be designed so that the preset selection signal can be converted by the coupling part, so that the converted target selection signal can control the HDMI switch chip to select the HDMI input interface defined by the corresponding interface, and then realize the input HDMI input interface The signal is accurately output to the main control chip.
  • the level of the first target selection signal is the same as the level of the first preset selection signal, which refers to: the level A1 of the first sub-target selection signal and the first sub-preset selection signal
  • the level B1 of the second sub-target selection signal is the same as the level B2 of the second sub-preset selection signal.
  • the level of the second target selection signal is the same as the level of the third preset selection signal, which means: the level A3 of the third sub-target selection signal is the same as the level B5 of the fifth sub-preset selection signal, and the fourth The level A4 of the sub-target selection signal is the same as the level B6 of the sixth sub-preset selection signal.
  • the level of the third target selection signal is the same as the level of the second preset selection signal, which means: the level A5 of the fifth sub-target selection signal is the same as the level B3 of the third sub-preset selection signal, and the sixth The level A6 of the sub-target selection signal is the same as the level B4 of the fourth sub-preset selection signal.
  • the coupling component 300 may include: a fourth coupling line S4 and a fifth coupling line S5; wherein the first selection control terminal SEL1 is controlled by the fourth coupling line S4 and the second output The terminal PS2 is electrically connected, and the second selection control terminal SEL2 is electrically connected to the first output control terminal PS1 through the fifth coupling wire S5.
  • the main control chip 200 outputs a first sub-preset selection signal with a low level through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is a low level, so that the second output control terminal PS2 The level is low.
  • the second sub-preset selection signal with a low level is output through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is low, so that the level of the first output control terminal PS1 is low. level.
  • the HDMI chip 200 can output the signal of the first HDMI input interface 110 defined by the first interface to the main control chip 200.
  • the main control chip 200 outputs a third sub-preset selection signal with a low level through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is a low level, so that the second output control terminal PS2 is The level is low.
  • the fourth sub-preset selection signal with a high level is output through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is high, so that the level of the first output control terminal PS1 is high. level.
  • the HDMI chip 200 can output the signal of the second HDMI input interface 120 defined by the second interface to the main control chip 200.
  • the main control chip 200 outputs the fifth sub-preset selection signal with a high level through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is high level, so that the second output control terminal PS2 is Level is high.
  • the sixth sub-preset selection signal with a low level is output through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is low, so that the level of the first output control terminal PS1 is low. level.
  • the HDMI chip 200 can output the signal of the third HDMI input interface 120 defined by the third interface to the main control chip 200.
  • the relationship between the multiple preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip may be as follows: the level of the first target selection signal and the third preset selection signal
  • the level of the second target selection signal is the same as the level of the first preset selection signal
  • the level of the third target selection signal is the same as the level of the second preset selection signal.
  • the coupling part can be designed so that the preset selection signal can be converted by the coupling part, so that the converted target selection signal can control the HDMI switch chip to select the HDMI input interface defined by the corresponding interface, and then realize the input HDMI input interface The signal is accurately output to the main control chip.
  • the level of the first target selection signal is the same as the level of the third preset selection signal, which means that the level A1 of the first sub-target selection signal is the same as the level B5 of the fifth sub-preset selection signal.
  • the level A2 of the second sub-target selection signal is the same as the level B6 of the sixth sub-preset selection signal.
  • the level of the second target selection signal is the same as the level of the first preset selection signal, which means: the level A3 of the third sub-target selection signal is the same as the level B1 of the first sub-preset selection signal, and the fourth The level A4 of the sub-target selection signal is the same as the level B2 of the second sub-preset selection signal.
  • the level of the third target selection signal is the same as the level of the second preset selection signal, which means: the level A5 of the fifth sub-target selection signal is the same as the level B3 of the third sub-preset selection signal, and the sixth The level A6 of the sub-target selection signal is the same as the level B4 of the fourth sub-preset selection signal.
  • the coupling component 300 may include: a sixth coupling line S6, a third diode VD3, a fourth diode VD4, a fourth resistor R4, a fifth resistor R5, and a Six resistors R6 and the second switch M2;
  • the first selection control terminal SEL1 is electrically connected to the second output control terminal PS2 through the sixth coupling wire S6;
  • the anode of the third diode VD3 is electrically connected to the first selection control terminal SEL1, and the cathode of the third diode VD3 is electrically connected to the first end of the fourth resistor R4;
  • the anode of the fourth diode VD4 is electrically connected to the second selection control terminal SEL2, and the cathode of the fourth diode VD4 is electrically connected to the first end of the fourth resistor R4;
  • the second end of the fourth resistor R4 is electrically connected to the control end of the second switch M2;
  • the first end of the fifth resistor R5 is electrically connected to the ground terminal GND, and the second end of the fifth resistor R5 is electrically connected to the first end of the fourth resistor R4;
  • the first terminal of the second switch M2 is electrically connected to the ground terminal GND, and the second terminal of the second switch M2 is electrically connected to the first terminal of the sixth resistor R6 and the first output control terminal PS1, respectively;
  • the second terminal of the sixth resistor R6 is electrically connected to the high voltage signal terminal VDD.
  • the second switch M2 may be a triode or a metal oxide semiconductor field effect transistor (MOS, Metal Oxide Semiconductor), which is not limited herein.
  • MOS Metal Oxide Semiconductor
  • the structure of the third diode VD3 and the fourth diode VD4 may be basically the same as the structure of the diode in the prior art, and will not be repeated here.
  • the resistance value of the fourth resistor R4 may be 4.7 k ⁇
  • the resistance value of the fifth resistor R5 may be 47 k ⁇
  • the resistance value of the sixth resistor R6 may be 4.7 k ⁇ .
  • the resistance value of the fourth resistor R4, the resistance value of the fifth resistor R5, and the resistance value of the sixth resistor R6 can be designed and determined according to the actual application environment, which is not limited here.
  • the main control chip 200 outputs a first sub-preset selection signal with a low level through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is a low level, so that the second output control terminal PS2 The level is low.
  • the second sub-preset selection signal with a low level is output through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is a low level.
  • the second switch M2 is controlled to be turned off, so that the level of the first output control terminal PS1 is high.
  • the HDMI chip 200 can output the signal of the first HDMI input interface 110 defined by the first interface to the main control chip 200.
  • the main control chip 200 outputs a third sub-preset selection signal with a low level through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is a low level, so that the second output control terminal PS2 is The level is low.
  • the fourth sub-preset selection signal with a high level is output through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is high level. Both ends of the third diode VD3 are disconnected, and the fourth diode VD4 is turned on, and the second switch M2 is controlled to be turned on, so that the level of the first output control terminal PS1 is low. In this way, the HDMI chip 200 can output the signal of the second HDMI input interface 120 defined by the second interface to the main control chip 200.
  • the main control chip 200 outputs the fifth sub-preset selection signal with a high level through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is high level, so that the second output control terminal PS2 is Level is high.
  • the sixth sub-preset selection signal with a low level is output through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is a low level.
  • the third diode VD3 is turned on, and both ends of the fourth diode VD4 are turned off, and the second switch M2 is controlled to be turned on, so that the level of the first output control terminal PS1 is high. In this way, the HDMI chip 200 can output the signal of the third HDMI input interface 130 defined by the third interface to the main control chip 200.
  • the relationship between the multiple preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip may be as follows: the level of the first target selection signal and the third preset selection signal
  • the level of the second target selection signal is the same as the level of the second preset selection signal
  • the level of the third target selection signal is the same as the level of the first preset selection signal.
  • the coupling part can be designed so that the preset selection signal can be converted by the coupling part, so that the converted target selection signal can control the HDMI switch chip to select the HDMI input interface defined by the corresponding interface, and then realize the input HDMI input interface The signal is accurately output to the main control chip.
  • the level of the first target selection signal is the same as the level of the third preset selection signal, which refers to: the level A1 of the first sub-target selection signal and the fifth sub-preset selection signal
  • the level B5 of the second sub-target selection signal is the same
  • the level A2 of the second sub-target selection signal is the same as the level B6 of the sixth sub-preset selection signal.
  • the level of the second target selection signal is the same as the level of the second preset selection signal, which means: the level A3 of the third sub-target selection signal is the same as the level B3 of the third sub-preset selection signal
  • the fourth The level A4 of the sub-target selection signal is the same as the level B4 of the fourth sub-preset selection signal.
  • the level of the third target selection signal is the same as the level of the first preset selection signal, which refers to: the level A5 of the fifth sub-target selection signal is the same as the level B1 of the first sub-preset selection signal, and the sixth The level A6 of the sub-target selection signal is the same as the level B2 of the second sub-preset selection signal.
  • the coupling component 300 may include: a seventh coupling line S7, a fifth diode VD5, a sixth diode VD6, a seventh resistor R7, an eighth resistor R8, and a Nine resistors R9 and the third switch M3;
  • the second selection control terminal SEL2 is electrically connected to the second output control terminal PS2 through the seventh coupling line S7;
  • the anode of the fifth diode VD5 is electrically connected to the first selection control terminal SEL1, and the cathode of the fifth diode VD5 is electrically connected to the first end of the seventh resistor R7;
  • the anode of the sixth diode VD6 is electrically connected to the second selection control terminal SEL6, and the cathode of the sixth diode VD6 is electrically connected to the first terminal of the seventh resistor R7;
  • the second end of the seventh resistor R7 is electrically connected to the control end of the third switch M3;
  • the first end of the eighth resistor R7 is electrically connected to the ground terminal GND, and the second end of the eighth resistor R8 is electrically connected to the first end of the seventh resistor R7;
  • the first terminal of the third switch M3 is electrically connected to the ground terminal GND, and the second terminal of the third switch M3 is electrically connected to the first terminal of the ninth resistor R9 and the first output control terminal PS1, respectively;
  • the second terminal of the ninth resistor R9 is electrically connected to the high voltage signal terminal VDD.
  • the third switch M3 may be a triode or a metal oxide semiconductor field effect transistor (MOS, Metal Oxide Semiconductor), which is not limited herein.
  • MOS Metal Oxide Semiconductor
  • the structures of the fifth diode VD5 and the sixth diode VD6 may be basically the same as the structures of the diodes in the prior art, which will not be repeated here.
  • the resistance value of the seventh resistor R7 may be 4.7 k ⁇
  • the resistance value of the eighth resistor R8 may be 47 k ⁇
  • the resistance value of the ninth resistor R9 may be 4.7 k ⁇ .
  • the resistance value of the seventh resistor R7, the resistance value of the eighth resistor R8, and the resistance value of the ninth resistor R9 can be designed and determined according to the actual application environment, which is not limited here.
  • the main control chip 200 outputs a second sub-preset selection signal with a low level through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is a low level, so that the second output control terminal PS2 The level is low.
  • the first selection control terminal SEL1 outputs a first sub-preset selection signal with a low level, and the level of the first selection control terminal SEL1 is a low level.
  • the third switch M3 is controlled to be turned off, so that the level of the first output control terminal PS1 is high. In this way, the HDMI chip 200 can output the signal of the first HDMI input interface 110 defined by the first interface to the main control chip 200.
  • the main control chip 200 outputs the fourth sub-preset selection signal with a high level through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is high level, so that the second output control terminal PS2's power Level is high.
  • the third sub-preset selection signal with a high level is output through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is a high level.
  • the fifth diode VD5 is turned on, and both ends of the sixth diode VD6 are turned off, and the third switch M3 is controlled to be turned on, so that the level of the first output control terminal PS1 is low.
  • the HDMI chip 200 can output the signal of the second HDMI input interface 120 defined by the second interface to the main control chip 200.
  • the main control chip 200 outputs the sixth sub-preset selection signal with a low level through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is a low level, so that the second output control terminal PS2 is The level is low.
  • the fourth sub-preset selection signal with a low level is output through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is a low level.
  • Both ends of the fifth diode VD5 are disconnected, and the sixth diode VD6 is turned on, and the third switch M3 is controlled to be turned on, so that the level of the first output control terminal PS1 is low.
  • the HDMI chip 200 can output the signal of the third HDMI input interface 130 defined by the third interface to the main control chip 200.
  • the relationship between the multiple preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip may be as follows: the level of the first target selection signal and the second preset selection signal The level of the second target selection signal is the same as the level of the third preset selection signal, and the level of the third target selection signal is the same as the level of the first preset selection signal.
  • the coupling part can be designed so that the preset selection signal can be converted by the coupling part, so that the converted target selection signal can control the HDMI switch chip to select the HDMI input interface defined by the corresponding interface, and then realize the input HDMI input interface The signal is accurately output to the main control chip.
  • the level of the first target selection signal is the same as the level of the second preset selection signal, which refers to: the level A1 of the first sub-target selection signal and the third sub-preset selection signal
  • the level B3 of the second sub-target selection signal is the same, and the level A2 of the second sub-target selection signal is the same as the level B4 of the fourth sub-preset selection signal.
  • the level of the second target selection signal is the same as the level of the third preset selection signal, which means: the level A3 of the third sub-target selection signal is the same as the level B5 of the fifth sub-preset selection signal, and the fourth The level A4 of the sub-target selection signal is the same as the level B6 of the sixth sub-preset selection signal.
  • the level of the third target selection signal is the same as the level of the first preset selection signal, which refers to: the level A5 of the fifth sub-target selection signal is the same as the level B1 of the first sub-preset selection signal, and the sixth The level A6 of the sub-target selection signal is the same as the level B2 of the second sub-preset selection signal.
  • the coupling component 300 may include: an eighth coupling line SL8, a seventh diode VD7, an eighth diode VD8, a tenth resistor R10, an eleventh resistor R11, The twelfth resistor R12 and the fourth switch M4;
  • the second selection control terminal SEL2 is electrically connected to the first output control terminal PS1 through the eighth coupling wire S8;
  • the anode of the seventh diode VD7 is electrically connected to the first selection control terminal SEL1, and the cathode of the seventh diode VD7 is electrically connected to the first end of the tenth resistor R10;
  • the anode of the eighth diode VD8 is electrically connected to the second selection control terminal SEL2, and the cathode of the eighth diode VD8 is electrically connected to the first end of the tenth resistor R10;
  • the second end of the tenth resistor R10 is electrically connected to the control end of the fourth switch M4;
  • the first end of the eleventh resistor R11 is electrically connected to the ground terminal GND, and the second end of the eleventh resistor R11 is electrically connected to the first end of the tenth resistor R10;
  • the first terminal of the fourth switch M4 is electrically connected to the ground terminal GND, and the second terminal of the fourth switch M4 is electrically connected to the first terminal of the twelfth resistor R12 and the second output control terminal PS2, respectively;
  • the second terminal of the twelfth resistor R12 is electrically connected to the high voltage signal terminal VDD.
  • the fourth switch M4 may be a triode or a metal oxide semiconductor field effect transistor (MOS, Metal Oxide Semiconductor), which is not limited herein.
  • MOS Metal Oxide Semiconductor
  • the structures of the seventh diode VD7 and the eighth diode VD8 may be basically the same as the structures of the diodes in the prior art, which will not be repeated here.
  • the resistance value of the tenth resistor R10 may be 4.7 k ⁇
  • the resistance value of the eleventh resistor R11 may be 47 k ⁇
  • the resistance value of the twelfth resistor R12 may be 4.7 k ⁇ .
  • the resistance value of the tenth resistor R10, the resistance value of the eleventh resistor R11, and the resistance value of the twelfth resistor R12 can be designed and determined according to the actual application environment, which is not limited here.
  • the main control chip 200 outputs a second sub-preset selection signal with a low level through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is a low level, so that the first output control terminal PS1 The level is low.
  • the first selection control terminal SEL1 outputs a first sub-preset selection signal with a low level, and the level of the first selection control terminal SEL1 is a low level. Both ends of the seventh diode VD7 and the eighth diode VD8 are disconnected, and the fourth switch M4 is controlled to be turned off, so that the level of the second output control terminal PS2 is high.
  • the HDMI chip 200 can output the signal of the first HDMI input interface 110 defined by the first interface to the main control chip 200.
  • the main control chip 200 outputs the fourth sub-preset selection signal with a high level through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is high level, so that the power of the first output control terminal PS1 Level is high.
  • the third sub-preset selection signal with a high level is output through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is a high level.
  • the seventh diode VD7 is turned on, and both ends of the eighth diode VD8 are turned off, and the fourth switch M4 is controlled to be turned on, so that the level of the second output control terminal PS2 is low.
  • the HDMI chip 200 can output the signal of the second HDMI input interface 120 defined by the second interface to the main control chip 200.
  • the main control chip 200 outputs a sixth sub-preset selection signal with a low level through the second selection control terminal SEL2, and the level of the second selection control terminal SEL2 is a low level, so that the power of the first output control terminal PS1 The level is low.
  • the fifth sub-preset selection signal with a low level is output through the first selection control terminal SEL1, and the level of the first selection control terminal SEL1 is a low level.
  • Both ends of the seventh diode VD7 are disconnected, and the eighth diode VD8 is turned on, and the fourth switch M4 is controlled to be turned on, so that the level of the second output control terminal PS2 is low.
  • the HDMI chip 200 can output the signal of the third HDMI input interface 120 defined by the third interface to the main control chip 200.
  • the voltage value of the high-voltage signal terminal VDD is greater than the voltage value of the ground terminal.
  • the voltage value of the high-voltage signal terminal VDD can be designed and determined according to the actual application environment, which is not limited here.
  • the embodiments of the present application also provide a circuit board prepared by the above-mentioned preparation method.
  • the circuit board may include: an HDMI switch chip 100, a main control chip 200, and a coupling component 300; wherein, the main control chip 200 pre-stores a plurality of preset selection signals and the HDMI switch chip 100
  • the HDMI switch chip 100 pre-stores the relationship between a plurality of target selection signals and the interface definition; the coupling part 300 is used for the relationship between a plurality of preset selection signals pre-stored in the main control chip 200 and
  • the relationship between the target selection signals of the HDMI switch chip 100 is electrically connected between the selection control terminal of the main control chip 200 and the output control terminal of the HDMI switch chip 100.
  • an embodiment of the present application also provides a display device, including the above-mentioned circuit board provided by the embodiment of the present application.
  • the circuit board may include: an HDMI switch chip 100, a main control chip 200, and a coupling component 300; wherein, the main control chip 200 pre-stores a plurality of preset selection signals and the HDMI switch chip 100
  • the HDMI switch chip 100 pre-stores the relationship between a plurality of target selection signals and the interface definition; the coupling part 300 is used for the relationship between a plurality of preset selection signals pre-stored in the main control chip 200 and
  • the relationship between the target selection signals of the HDMI switch chip 100 is electrically connected between the selection control terminal of the main control chip 200 and the output control terminal of the HDMI switch chip 100.
  • the principle of solving the problem of the display device is similar to that of the aforementioned circuit board. Therefore, the implementation of the display device can refer to the implementation of the aforementioned circuit board, and the repetition is not repeated here.
  • the above-mentioned display device may be a television.
  • the display device may also be any product or component with a display function, such as a mobile phone, a tablet computer, a monitor, a notebook computer, a digital photo frame, a navigator, and so on.
  • the other indispensable components of the display device are understood by those of ordinary skill in the art, and will not be repeated here, nor should they be used as a limitation to the application.
  • the circuit board, the preparation method and the display device provided in the embodiments of the application can be selected according to the relationship between the multiple preset selection signals pre-stored in the main control chip and the target selection signal of the HDMI switch chip.
  • a coupling component is provided between the control terminal and the output control terminal of the HDMI switch chip to convert the selection signal output by the selection control terminal of the main control chip through the coupling component to provide the output control terminal of the HDMI switch chip, so as to form Improved circuit board adaptability.
  • FIG. 9 is a schematic diagram of a display device provided in Embodiment 1 of the present application.
  • the present application also provides a display device, which at least includes: a display screen 91 configured to present image data; and a speaker 92 configured to reproduce sound data .
  • the display device may further include: a backlight assembly 94 located below the display screen 91.
  • a backlight assembly 94 located below the display screen 91.
  • the backlight assembly may include an LED light bar, and may also include a light panel that automatically emits light.
  • the display device may further include: a back plate 95.
  • the back plate 95 is stamped to form some convex structures, and the speakers 92 and other devices are fixed on the convex structures by screws or hooks.
  • the display device may further include: a rear case 98, which is arranged on the back of the display screen 91 to hide the backlight assembly 94, the speaker 92 and other components of the display device, which has a beautiful effect.
  • the display device may further include: a main board 96 and a power supply board 97, which may be arranged as two boards independently, or may be combined on one board.
  • the display device further includes a remote control 93.
  • FIG. 10 is a block diagram of the hardware configuration of the display device provided in Embodiment 1 of the present application.
  • the display device 200A may include a tuner and demodulator 220, a communicator 230, a detector 240, an external device interface 250, a controller 210, a memory 290, a user input interface, a video processor 260-1, and audio processing. 260-2, display screen 280, audio input interface 272, power supply.
  • the tuner and demodulator 220 receives broadcast and TV signals through wired or wireless means, and can perform modulation and demodulation processing such as amplification, mixing and resonance, and is used to demodulate the TV channel selected by the user from multiple wireless or cable broadcast and TV signals
  • modulation and demodulation processing such as amplification, mixing and resonance
  • the audio and video signal carried in the frequency, and additional information (such as EPG data signal).
  • the tuner and demodulator 220 can be selected by the user and controlled by the controller 210 to respond to the TV channel frequency selected by the user and the TV signal carried by the frequency.
  • the tuner and demodulator 220 can receive signals in many ways according to different TV signal broadcasting systems, such as terrestrial broadcasting, cable broadcasting, satellite broadcasting, or Internet broadcasting; and according to different modulation types, it can be digital modulation or alternatively. Analog modulation method; and according to different types of received TV signals, analog signals and digital signals can be demodulated.
  • TV signal broadcasting systems such as terrestrial broadcasting, cable broadcasting, satellite broadcasting, or Internet broadcasting
  • Analog modulation method and according to different types of received TV signals, analog signals and digital signals can be demodulated.
  • the tuner demodulator 220 may also be in an external device, such as an external set-top box.
  • the set-top box outputs TV audio and video signals through modulation and demodulation, and inputs them to the display device 200A through the input/output interface 250.
  • the communicator 230 is a component for communicating with external devices or external servers according to various communication protocol types.
  • the communicator 230 may include a WIFI circuit 231, a Bluetooth communication protocol circuit 232, a wired Ethernet communication protocol circuit 233 and other network communication protocol circuits or near field communication protocol circuits.
  • the display apparatus 200A may establish a connection between a control signal and a data signal with an external control device or content providing device through the communicator 230.
  • the communicator may receive the control signal of the remote controller 100 according to the control of the controller.
  • the detector 240 is a component of the display device 200A for collecting signals from the external environment or interacting with the outside.
  • the detector 240 may include a light receiver 242, a sensor used to collect the intensity of ambient light, which can adaptively display parameter changes by collecting ambient light, etc.; it may also include an image collector 241, such as a camera, a camera, etc., which can be used to collect external
  • the environment scene, as well as the user's attributes or gestures used to interact with the user can adaptively change the display parameters, and can also recognize the user's gestures to achieve the function of interaction with the user.
  • the detector 240 may further include a temperature sensor.
  • the display device 200A may adaptively adjust the display color temperature of the image.
  • the display device 200A when the temperature is relatively high, the display device 200A can adjust the display image color temperature to be cooler; when the temperature is relatively low, the display device 200A can adjust the display image color temperature to be warmer.
  • the detector 240 may also include a sound collector, such as a microphone, which may be used to receive the user's voice, including the voice signal of the user's control instruction for controlling the display device 200A, or to collect environmental sound for Recognizing the environmental scene type, the display device 200A can adapt to the environmental noise.
  • a sound collector such as a microphone
  • the external device interface 250 provides a component for the controller 210 to control data transmission between the display device 200A and other external devices.
  • the external device interface can be connected to external devices such as set-top boxes, game devices, notebook computers, etc. in a wired/wireless manner, and can receive external devices such as video signals (such as moving images), audio signals (such as music), and additional information (such as EPG). ) And other data.
  • the external device interface 250 may include: a high-definition multimedia interface (HDMI) terminal 251, a composite video blanking synchronization (CVBS) terminal 252, an analog or digital component terminal 253, a universal serial bus (USB) terminal 254, red, green, and blue ( RGB) terminal (not shown in the figure) and any one or more.
  • HDMI high-definition multimedia interface
  • CVBS composite video blanking synchronization
  • USB universal serial bus
  • RGB red, green, and blue
  • the controller 210 controls the operation of the display device 200A and responds to user operations by running various software control programs (such as an operating system and various application programs) stored on the memory 290.
  • various software control programs such as an operating system and various application programs
  • the controller 210 includes a random access memory RAM 213, a read only memory ROM 214, a graphics processor 216, a CPU processor 212, a communication interface 218, and a communication bus.
  • the RAM 213 and the ROM 214, the graphics processor 216, the CPU processor 212, and the communication interface 218 are connected by a bus.
  • the graphics processor 216 is used to generate various graphics objects, such as icons, operation menus, and user input instructions to display graphics. Including an arithmetic unit, which performs operations by receiving various interactive commands input by the user, and displays various objects according to the display attributes. As well as including a renderer, various objects obtained based on the arithmetic unit are generated, and the rendering result is displayed on the display screen 280.
  • the CPU processor 212 is configured to execute operating system and application program instructions stored in the memory 290. And according to receiving various interactive instructions input from the outside, to execute various application programs, data and content, so as to finally display and play various audio and video content.
  • the CPU processor 212 may include multiple processors.
  • the multiple processors may include one main processor and multiple or one sub-processors.
  • the main processor is used to perform some operations of the display device 200A in the pre-power-on mode, and/or to display images in the normal mode.
  • the communication interface may include a first interface 218-1 to an nth interface 218-n. These interfaces may be network interfaces connected to external devices via a network.
  • the controller 210 may control the overall operation of the display device 200A. For example, in response to receiving a user command for selecting a UI object to be displayed on the display screen 280, the controller 210 may perform an operation related to the object selected by the user command.
  • the object may be any one of the selectable objects, such as a hyperlink or an icon.
  • Operations related to the selected object for example: display operations connected to hyperlink pages, documents, images, etc., or perform operations corresponding to the icon.
  • the user command for selecting the UI object may be a command input through various input devices (for example, a mouse, a keyboard, a touch pad, etc.) connected to the display device 200A or a voice command corresponding to a voice spoken by the user.
  • the memory 290 includes storing various software circuits for driving and controlling the display device 200A.
  • various software circuits stored in the memory 290 include: basic circuits, detection circuits, communication circuits, display control circuits, browser circuits, and various service circuits.
  • the basic circuit is a low-level software circuit used for signal communication between various hardware in the display device 200A and sending processing and control signals to the upper circuit.
  • the detection circuit is a management circuit used to collect various information from various sensors or user input interfaces, and perform digital-to-analog conversion, analysis and management.
  • the voice recognition circuit includes a voice parsing circuit and a voice command database circuit.
  • the display control circuit is a circuit for controlling the display screen 280 to display image content, and can be used to play information such as multimedia image content and UI interfaces.
  • the communication circuit is a circuit used for control and data communication with external devices.
  • the browser circuit is a circuit used to perform data communication between browsing servers.
  • the service circuit is a circuit used to provide various services and various applications.
  • the memory 290 is also used to store and receive external data and user data, images of various items in various user interfaces, and visual effect diagrams of focus objects, and the like.
  • the user input interface 276 is used to send a user's input signal to the controller 210, or to transmit a signal output from the controller to the user.
  • the control device for example, a mobile terminal or a remote control
  • Controller or, the control device may receive output signals such as audio, video, or data output from the user input interface processed by the controller, and display the received output signal or output the received output signal as audio or vibration.
  • the user may input a user command on a graphical user interface (GUI) displayed on the display screen 280, and the user input interface receives the user input command through the graphical user interface (GUI).
  • GUI graphical user interface
  • the user may input a user command by inputting a specific voice or gesture, and the user input interface recognizes the voice or gesture through the sensor to receive the user input command.
  • the video processor 260-1 is used to receive video signals, and perform video data processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, and image synthesis according to the standard codec protocol of the input signal.
  • the video signal directly displayed or played on the display screen 280.
  • the video processor 260-1 includes a demultiplexing circuit, a video decoding circuit, an image synthesis circuit, a frame rate conversion circuit, a display formatting circuit, and the like.
  • the demultiplexing circuit is used to demultiplex the input audio and video data stream. For example, if MPEG-2 is input, the demultiplexing circuit will demultiplex into a video signal and an audio signal.
  • the video decoding circuit is used to process the demultiplexed video signal, including decoding and scaling.
  • An image synthesis circuit such as an image synthesizer, is used to superimpose and mix the GUI signal generated by the graphics generator with the zoomed video image according to user input or itself to generate a displayable image signal.
  • Frame rate conversion circuit used to convert the frame rate of the input video, such as converting the frame rate of the input 24Hz, 25Hz, 30Hz, 60Hz video to the frame rate of 60Hz, 120Hz or 240Hz, where the input frame rate can be compared with the source
  • the video stream is related, and the output frame rate can be related to the update rate of the display screen.
  • the input has the usual format, such as the frame insertion method.
  • the display formatting circuit is used to change the signal output by the frame rate conversion circuit into a signal that conforms to the display format of a display, for example, format conversion of the signal output by the frame rate conversion circuit to output RGB data signals.
  • the display screen 280 is used to receive image signals input from the video processor 260-1, to display video content and images, and a menu control interface.
  • the display screen 280 includes a display screen component for presenting a picture and a driving component for driving image display.
  • the displayed video content can be from the video in the broadcast signal received by the tuner and demodulator 220, or from the video content input by the communicator or the interface of an external device.
  • the display screen 280 simultaneously displays a user manipulation interface UI generated in the display device 200A and used to control the display device 200A.
  • the display screen 280 it also includes a driving component for driving the display.
  • the display screen 280 is a projection display, it may also include a projection device and a projection screen.
  • the audio processor 260-2 is used to receive audio signals, and perform decompression and decoding according to the standard codec protocol of the input signal, as well as audio data processing such as noise reduction, digital-to-analog conversion, and amplification processing, and the result can be in the speaker 272 The audio signal to be played.
  • the audio output interface 270 is used to receive the audio signal output by the audio processor 260-2 under the control of the controller 210.
  • the audio output interface may include a speaker 272 or output to an external audio output terminal 274 of the generator of an external device, such as : External audio terminal or headphone output terminal, etc.
  • the video processor 260-1 may include one or more chips.
  • the audio processor 260-2 may also include one or more chips.
  • the video processor 260-1 and the audio processor 260-2 may be separate chips, or may be integrated with the controller 210 in one or more chips.
  • the power supply 275 is used to provide power supply support for the display device 200A with power input from an external power supply under the control of the controller 210.
  • the power supply 275 may include a built-in power supply circuit installed inside the display device 200A, or may be a power supply installed outside the display device 200A, such as a power interface that provides an external power supply in the display device 200A.
  • the present application provides a display device, including:
  • the display screen is configured to present an image screen
  • the speaker is configured to reproduce sound data
  • a controller configured to determine the relationship between the multiple preset selection signals stored in advance and the interface definition of the HDMI switch chip, and the relationship between the multiple target selection signals stored in advance by the HDMI switch chip and the interface definition;
  • the coupling component is electrically connected to the selection control terminal of the main control chip and the output control of the HDMI switch chip Between ends.
  • one said interface definition corresponds to one said preset selection signal and one said target selection signal.
  • the controller is configured such that the multiple target selection signals include: a first target selection signal, a second target selection signal, and a third target selection signal; wherein, the first target selection signal corresponds to the first target selection signal.
  • Interface definition the second target selection signal corresponds to a second interface definition
  • the third target selection signal corresponds to a third interface definition
  • the multiple preset selection signals include: a first preset selection signal, a second preset selection signal, and a third preset selection signal; wherein, the first preset selection signal corresponds to the first interface definition, so The second preset selection signal corresponds to the second interface definition, and the third preset selection signal corresponds to the third interface definition.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the first preset selection signal, and the level of the second target selection signal is the same as the level of the second target selection signal.
  • the level of the preset selection signal is the same, and the level of the third target selection signal is the same as the level of the third preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a first coupling line and a second coupling line; wherein the first selection control terminal is electrically connected to the first output control terminal through the first coupling line, and the second selection control The terminal is electrically connected to the second output control terminal through the second coupling line.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the second preset selection signal, and the level of the second target selection signal is the same as that of the first The level of the preset selection signal is the same, and the level of the third target selection signal is the same as the level of the third preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a third coupling line, a first diode, a second diode, a first resistor, a second resistor, a third resistor, and a first switch;
  • the first selection control terminal is electrically connected to the first output control terminal through the third coupling line;
  • the anode of the first diode is electrically connected to the first selection control terminal, and the cathode of the first diode is electrically connected to the first end of the first resistor;
  • the anode of the second diode is electrically connected to the second selection control terminal, and the cathode of the second diode is electrically connected to the first terminal of the first resistor;
  • the second end of the first resistor is electrically connected to the control end of the first switch
  • the first end of the second resistor is electrically connected to the ground end, and the second end of the second resistor is electrically connected to the first end of the first resistor;
  • the first terminal of the first switch is electrically connected to the ground terminal, and the second terminal of the first switch is electrically connected to the first terminal of the third resistor and the second output control terminal respectively;
  • the second end of the third resistor is electrically connected to the high voltage signal end.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the first preset selection signal, and the level of the second target selection signal is the same as the level of the third target selection signal.
  • the level of the preset selection signal is the same, and the level of the third target selection signal is the same as the level of the second preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a fourth coupling line and a fifth coupling line; wherein the first selection control terminal is electrically connected to the second output control terminal through the fourth coupling line, and the second selection control The terminal is electrically connected to the first output control terminal through the fifth coupling line.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the third preset selection signal, and the level of the second target selection signal is the same as the level of the first target selection signal.
  • the level of the preset selection signal is the same, and the level of the third target selection signal is the same as the level of the second preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a sixth coupling line, a third diode, a fourth diode, a fourth resistor, a fifth resistor, a sixth resistor, and a second switch;
  • the first selection control terminal is electrically connected to the second output control terminal through the sixth coupling line;
  • the anode of the third diode is electrically connected to the first selection control terminal, and the third and second The negative electrode of the pole tube is electrically connected to the first end of the fourth resistor;
  • the anode of the fourth diode is electrically connected to the second selection control terminal, and the cathode of the fourth diode is electrically connected to the first end of the fourth resistor;
  • the second end of the fourth resistor is electrically connected to the control end of the second switch
  • the first end of the fifth resistor is electrically connected to the ground end, and the second end of the fifth resistor is electrically connected to the first end of the fourth resistor;
  • the first terminal of the second switch is electrically connected to the ground terminal, and the second terminal of the second switch is electrically connected to the first terminal of the sixth resistor and the first output control terminal respectively;
  • the second end of the sixth resistor is electrically connected to the high voltage signal end.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the third preset selection signal, and the level of the second target selection signal is the same as the level of the second target selection signal.
  • the level of the second preset selection signal is the same, and the level of the third target selection signal is the same as the level of the first preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: a seventh coupling line, a fifth diode, a sixth diode, a seventh resistor, an eighth resistor, a ninth resistor, and a third switch;
  • the second selection control terminal is electrically connected to the second output control terminal through the seventh coupling line;
  • the anode of the fifth diode is electrically connected to the first selection control terminal, and the cathode of the fifth diode is electrically connected to the first end of the seventh resistor;
  • the anode of the sixth diode is electrically connected to the second selection control terminal, and the cathode of the sixth diode is electrically connected to the first terminal of the seventh resistor;
  • the second end of the seventh resistor is electrically connected to the control end of the third switch
  • the first end of the eighth resistor is electrically connected to the ground end, and the second end of the eighth resistor is electrically connected to the first end of the seventh resistor;
  • the first terminal of the third switch is electrically connected to the ground terminal, and the second terminal of the third switch is electrically connected to the first terminal of the ninth resistor and the first output control terminal respectively;
  • the second end of the ninth resistor is electrically connected to the high voltage signal end.
  • the controller is configured such that the level of the first target selection signal is the same as the level of the second preset selection signal, and the level of the second target selection signal is the same as the level of the second preset selection signal.
  • the level of the third preset selection signal is the same, and the level of the third target selection signal is the same as the level of the first preset selection signal;
  • the output control terminal includes: a first output control terminal and a second output control terminal;
  • the selection control terminal includes: a first selection control terminal and a second selection control terminal;
  • the coupling component includes: an eighth coupling line, a seventh diode, an eighth diode, a tenth resistor, an eleventh resistor, a twelfth resistor, and a fourth switch;
  • the second selection control terminal is electrically connected to the first output control terminal through the eighth coupling line;
  • the anode of the seventh diode is electrically connected to the first selection control terminal, and the cathode of the seventh diode is electrically connected to the first end of the tenth resistor;
  • the anode of the eighth diode is electrically connected to the second selection control terminal, and the cathode of the eighth diode is electrically connected to the first end of the tenth resistor;
  • the second end of the tenth resistor is electrically connected to the control end of the fourth switch
  • the first end of the eleventh resistor is electrically connected to the ground end, and the second end of the eleventh resistor is electrically connected to the first end of the tenth resistor;
  • the first terminal of the fourth switch is electrically connected to the ground terminal, and the second terminal of the fourth switch is electrically connected to the first terminal of the twelfth resistor and the second output control terminal, respectively;
  • the second end of the twelfth resistor is electrically connected to the high voltage signal end.

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  • Engineering & Computer Science (AREA)
  • Multimedia (AREA)
  • Signal Processing (AREA)
  • Control Of Indicators Other Than Cathode Ray Tubes (AREA)

Abstract

La présente demande porte sur un dispositif d'affichage. Selon une relation entre de multiples signaux de sélection prédéfinis préstockés dans une puce de commande principale et les signaux de sélection cible d'une puce de commutation HDMI, un composant de couplage est disposé entre l'extrémité de commande de sélection de la puce de commande principale et l'extrémité de commande de sortie de la puce de commutation HDMI. De la sorte, le signal de sélection délivré par l'extrémité de commande de sélection de la puce de commande principale est converti au moyen du composant de couplage puis fourni à l'extrémité de commande de sortie de la puce de commutation HDMI, ce qui améliore l'adaptabilité d'une carte de circuit formée.
PCT/CN2020/075959 2019-08-27 2020-02-20 Dispositif d'affichage WO2021036207A1 (fr)

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CN110545392B (zh) * 2019-08-27 2020-12-18 海信视像科技股份有限公司 一种电路板、其制备方法及显示装置
CN113868185A (zh) * 2020-06-30 2021-12-31 Oppo广东移动通信有限公司 多芯片系统、电子设备及数据传输方法

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