CN111641791A - Video signal switching equipment and display device - Google Patents
Video signal switching equipment and display device Download PDFInfo
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- CN111641791A CN111641791A CN202010480998.5A CN202010480998A CN111641791A CN 111641791 A CN111641791 A CN 111641791A CN 202010480998 A CN202010480998 A CN 202010480998A CN 111641791 A CN111641791 A CN 111641791A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/222—Studio circuitry; Studio devices; Studio equipment
- H04N5/262—Studio circuits, e.g. for mixing, switching-over, change of character of image, other special effects ; Cameras specially adapted for the electronic generation of special effects
- H04N5/268—Signal distribution or switching
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Abstract
The invention provides a video signal switching device and a display device, wherein the video signal switching device comprises an input circuit and an output circuit which are electrically connected; the input circuit inputs signals with different formats through at least two input ports and transmits the signals into the output circuit from one port, and the output circuit correspondingly outputs the signals with different formats through at least two output ports. The display device comprises the video signal switching equipment and a display module, wherein the video signal switching equipment is electrically connected with the display module. A display device comprises a display device and a base which are arranged in a split mode, wherein the base is connected with the display device; the display device and the base are respectively provided with the video signal switching device of any one of the above claims 1 to 8; the base further comprises a main controller, and the main controller is used for providing display data to the display equipment to control the display equipment to display.
Description
[ technical field ] A method for producing a semiconductor device
The present invention relates to the field of signal switching, and in particular, to a video signal switching device and a display apparatus.
[ background of the invention ]
With the pursuit of viewing and listening, HDMI (High Definition multimedia interface) and Displayport (DP interface) are widely used as High-speed video display interfaces, wherein Displayport is a new High-speed video interface capable of transmitting video signals with High resolution and High refresh rate and is included in the USB Type-C protocol.
In present electronic equipment, DP and HDMI signal are for carrying out signal connection transmission independently separately, and the user needs the corresponding line of targeted selection and the signal that the port transmitted corresponds, and signal transmission equipment's input port and output port all need the plug to change the jointing equipment who corresponds, be unfavorable for electronic equipment's quick plug, reduce the practicality of use.
[ summary of the invention ]
The invention provides video signal switching equipment and a display device to overcome the technical problem of low practicability of the conventional signal transmission equipment.
In order to solve the technical problems, the invention provides the following technical scheme: a video signal switching device comprises an input circuit and an output circuit, wherein the input circuit and the output circuit are electrically connected; the input circuit comprises an input first port, an input switching chip, an input control module and at least two input ports, and the output circuit comprises an output first port, an output switching chip, an output control module and at least two output ports; the input switching chip and the output switching chip are used for switching channels for transmitting signals in different formats, the input control module is used for identifying input signals, and the output control module is used for identifying output signals; the input circuit inputs signals with different formats through at least two input ports and transmits the signals into the output circuit from one port, and the output circuit correspondingly outputs the signals with different formats through at least two output ports.
Preferably, the input ports are an input second port and an input third port, respectively, and the output ports are an output second port and an output third port, respectively; the output second port and the input second port pass DP signals, and the output third port and the input third port pass HDMI signals; the output first port, the output second port and the output third port are electrically connected with the output switching chip respectively, the input first port, the input second port and the input third port are electrically connected with the input switching chip respectively, the output control module is electrically connected with the output switching chip and the output first port, and the input control module is electrically connected with the input switching chip and the input first port.
Preferably, the input port, the input first port, the output port and the output first port are provided with connecting pieces simultaneously, and the connecting pieces are used for signal transmission; the number of connectors input to the first port is equal to the maximum number of connectors input to the second port or the third port; the number of connections of the output first port is equal to the maximum number of connections of the output second port or the output third port.
Preferably, the output switching chip and the input switching chip are TS3DV642, and the output control module and the input control module are single-chip microcomputers.
Preferably, the input switching chip and the output chip only change signal transmission channels, and no signal format is changed.
Preferably, the output first port and the input first port are magnetically attracted ports.
Preferably, the number of connections of the output first port to the input first port is at least 24; the connecting piece comprises a contact end, the connecting piece with the large contact end area is used for transmitting an electric signal, and the connecting piece with the small contact end area is used for transmitting a data signal; the connecting pieces are correspondingly arranged in rows, and signals transmitted by the connecting pieces in each row are symmetrically arranged.
Preferably, the a2 pin of the output first port is electrically connected to the D1-pin of the output switching chip, the A3 pin of the output first port is electrically connected to the D1+ pin of the output switching chip, the a4 pin of the output first port is electrically connected to the D0-pin of the output switching chip, the a5 pin of the output first port is electrically connected to the D0+ pin of the output switching chip, the a7 pin of the output first port is electrically connected to the SDA pin of the output switching chip, the A8 pin of the output first port is electrically connected to the SCL pin of the output switching chip, the B5 pin of the output first port is electrically connected to the HPD pin of the output switching chip, the B8 pin of the output first port is electrically connected to the D3-pin of the output switching chip, and the B9 pin of the output first port is electrically connected to the D3+ pin of the output switching chip, the pin B10 of the output first port is electrically connected with the pin D2-of the output switching chip, and the pin B11 of the output first port is electrically connected with the pin D2+ of the output switching chip; the control module is electrically connected with an SEL2 pin of the output switching chip, and the control module is electrically connected with a B4 pin of the first port; an SCL _ A pin of the output switching chip is electrically connected with a 15 pin of the output third port, and an SDA _ A pin of the output switching chip is electrically connected with a 16 pin of the output third port; the pin D0+ _ A of the output switching chip is electrically connected with the pin 12 of the output third port, the pin D0- _ A of the output switching chip is electrically connected with the pin 10 of the output third port, the pin D1+ _ A of the output switching chip is electrically connected with the pin 9 of the output third port, the pin D1- _ A of the output switching chip is electrically connected with the pin 7 of the output third port, the pin D2+ _ A of the output switching chip is electrically connected with the pin 6 of the output third port, the pin D2- _ A of the output switching chip is electrically connected with the pin 4 of the output third port, the pin D3+ _ A of the output switching chip is electrically connected with the pin 2 of the output third port, the D3- _ A pin of the output switching chip is electrically connected with the 1 pin of the output third port; the HPD _ A pin of the output switching chip is electrically connected with the 19 pin of the output third port; the SCL _ B pin of the output switching chip is electrically connected with the A8 pin of the output second port, and the SDA _ B pin of the output switching chip is electrically connected with the B8 pin of the output second port; the D0+ _ B pin of the output switching chip is electrically connected with the B2 pin of the output second port, the D0- _ B pin of the output switching chip is electrically connected with the B3 pin of the output second port, the D1+ _ B pin of the output switching chip is electrically connected with the A11 pin of the output second port, the D1- _ B pin of the output switching chip is electrically connected with the A10 pin of the output second port, the D2+ _ B pin of the output switching chip is electrically connected with the B11 pin of the output second port, the D2- _ B pin of the output switching chip is electrically connected with the B10 pin of the output second port, the D3+ _ B pin of the output switching chip is electrically connected with the A2 pin of the output second port, the D3- _ B pin of the output switching chip is electrically connected with the A3 pin of the output second port.
A display device comprises a display device and a base which are arranged in a split mode, wherein the base is connected with the display device; the display device and the base are respectively provided with the video signal switching device of any one of the claims 1 to 8; the base further comprises a main controller, and the main controller is used for providing display data to the display equipment to control the display equipment to display.
Preferably, the display device is a touch screen.
Compared with the prior art, the video signal switching equipment and the display device provided by the invention have the following advantages:
1. the input circuit inputs signals with different formats through at least two input ports, the signals are input into the output circuit from one port, the output circuit correspondingly outputs signals with different formats through at least two output ports, the input switching chip can switch channels of the output signals, the output switching chip can transmit the signals according to the corresponding channels, port transmission signals with various signal types are output through a single port, and the signals are correspondingly output through multiple ports, so that the video signal switching equipment can transmit the signals with various formats, the change of the original signals is avoided, the authenticity of signal transmission is ensured, further, the transmission of the signals can be disconnected by disconnecting the input first port and the output first port of the video signal switching equipment, namely the input first port and the output first port are in breakable connection, and the equipment can be quickly plugged and unplugged to disconnect the signal transmission path, the video signal switching equipment can be directly plugged and unplugged from the port, and the convenience and the practicability of the video signal switching equipment are improved.
2. The number of the connecting pieces input into the first port is equal to the maximum number of the connecting pieces input into the second port or the third port, so that the first port can correspondingly output signals corresponding to all the connecting pieces of the second port and the third port, data loss in signal transmission is avoided, and the authenticity of signal transmission is ensured.
3. The utility model discloses a signal type of the arbitrary connecting piece of input first port and output first port self-defining and the quantity of the connecting piece of selection for transmitting signal, make the number and the corresponding position of the connecting piece that the connecting piece optional signal transmission needs, in order to carry out signal transmission, the connecting piece is suitable for different signal transmission, the practicality of connecting piece has been improved, port on the reducible electronic equipment sets up quantity, the electronic equipment of being convenient for carries out quick plug, avoid matching the port according to signal type, increase the practicality and the convenience of electronic equipment, the while increases the variety of the transmission information type of input first port and output first port.
4. The input switching chip and the output switching chip are respectively provided with A, B two channels, the A channel transmits HDMI signals to the input third port and the output third port, the B channel transmits Displayport signals to the input second port and the output second port, the input switching chip and the output switching chip select a channel corresponding to the A, B channel through the high level or the low level of the HPD _ B pin to transmit corresponding signals, so that the input switching chip and the output switching chip can automatically switch the channels to transmit signals, the automation degree of the video signal switching equipment is improved, and the step of manual operation can be omitted.
5. A display device is provided with video signal switching equipment on a display device and a base which are arranged in a split mode, the display device and the base are electrically connected through the video signal switching equipment to transmit electric signals and data signals, the video signal switching equipment can transmit various video signals, the video signal switching equipment is arranged on the display device and the base to transmit various video signals, the number of ports can be reduced, the display device can be quickly plugged from the base, signals are prevented from being matched by the display device through signal types, and the practicability and convenience of the display device are improved.
6. Set up main control unit on the base, display device only possesses the display function, display device need with the wireless material of base be connected in order further to show, make the base not only have the supporting role, can also and display device between carry out data transmission, the interactivity of base with display device has been improved, furtherly, through the connection of video signal switching equipment, transmit multiple signal through a port and replace a port signal, improve display device's practicality.
[ description of the drawings ]
Fig. 1 is a block diagram of a video signal switching apparatus according to a first embodiment of the present invention;
fig. 2 is a circuit diagram of an output first port and an output switching chip of a video signal switching device according to a first embodiment of the present invention;
fig. 3 is a circuit diagram of an output second port, an output third port and an output switching chip of the video signal switching apparatus according to the first embodiment of the present invention;
FIG. 4 is a schematic structural diagram of an output first port of a food signal switching apparatus according to a first embodiment of the present invention;
fig. 5 is a schematic structural diagram of a display device of a display apparatus according to a second embodiment of the present invention;
fig. 6 is a schematic structural diagram of a base of a display device according to a second embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating an overall structure of a display device according to a second embodiment of the present invention;
fig. 8 is a schematic view of an overall structure of a display device according to a second embodiment of the present invention.
Description of reference numerals:
1. a video signal switching device; 11. an output circuit; 111. an output first port; 112. an output switching chip; 113. an output control module; 114. an output second port; 115. an output third port; 116. an output port; 117. an input port; 12. an input circuit; 121. inputting a first port; 122. inputting a switching chip; 123. an input control module; 124. an input second port; 125. inputting a third port; 13. a connecting member; 100. a display device; 101. a display device; 102. a base; 1021. and a main controller.
[ detailed description ] embodiments
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Referring to fig. 1, a video signal switching apparatus 1 according to a first embodiment of the present invention includes an input circuit 12 and an output circuit 11, where the input circuit 12 is electrically connected to the output circuit 11, the input circuit 12 includes a first port 121, an input switching chip 122, an input control module 123 and at least two input ports 117, and the output circuit includes an output first port 111, an output switching chip 112, an output control module 113 and at least two output ports 116; the input circuit 12 inputs signals of different formats through at least two input ports, and inputs the signals into the output circuit through one port, and the output circuit correspondingly outputs the signals of different formats through at least two output ports.
The input ports are the output second port 114 and the output third port 115, respectively, and the output ports are the output second port 114 and the output third port 115, respectively.
Specifically, the input switching chip 122 and the output chip 112 only change signal transmission channels, and no signal format is changed, the input circuit 12 inputs signals of different formats through at least two input ports 117, and inputs the signals into the output circuit 11 from one port, the output circuit 11 correspondingly outputs the signals of different formats through at least two output ports 116, the input switching chip 122 can switch channels of the output signals, the output switching chip 112 can transmit the signals according to the corresponding channels, so that the output of port transmission signals of multiple signal types through a single port and correspondingly outputs the signals through multiple ports, so that the video signal switching device 1 can transmit the signals of multiple formats, avoid changing the original signals, ensure the authenticity of signal transmission, and further, the video signal switching device 1 can disconnect the transmission of the signals by disconnecting the input first port 121 from the output first port 111, the rapid plugging and unplugging of the equipment are realized to disconnect the signal transmission path, the convenience of the video signal switching equipment 1 is improved, and the practicability of the video signal switching equipment 1 is improved.
The output circuit 11 includes an output first port 111, an output switching chip 112, an output control module 113, an output second port 114, and an output third port 115, where the output first port 111, the output second port 114, and the output third port 115 are electrically connected to the output switching chip 112, the output control module 113 is electrically connected to the output switching chip 112 and the output first port 111, the output switching chip 112 is used for switching channels for transmitting signals of different formats, and the output control module 113 is used for identifying output signals.
The output first port 111 and the input first port 121 are magnetic suction ports; the output first port 111 and the input first port 121 are respectively provided with a connecting piece, and the number of the connecting pieces arranged on the output first port 111 and the input first port 121 is 24. Specifically, the output first port 111 and the input first port 121 are self-defined ports, the signals transmitted by the output first port 111 and the input first port 121 are determined by the signals input at the output second port 114 and the output third port 115, the types of the transmission signals of the output first port 111 and the input first port 121 can be changed along with the type change of the input signal of the output circuit 11, so that the input signal of the output circuit 11 is output at the output first port 111, it can be understood that the input circuit 12 can output a plurality of signals at the input first port 121, the signal corresponding to the signal type is transmitted by switching the channel corresponding to the signal type through the input switching chip 122, meanwhile, the output circuit 11 can recognize the signal at the output first port 111, and transmit the signal to the corresponding channel according to the corresponding signal type through the output switching chip 112 and the output control module 113, port setting on the electronic equipment can be reduced, furthermore, the video signal switching equipment 1 can directly plug and pull the ports, and can select a channel for transmission according to the current signal type, so that the equipment can be conveniently and quickly plugged and pulled, and the practicability of the video signal switching equipment 1 is improved; further, the output first port 111 and the input first port 121 are magnetic attraction ports, so that the output first port 111 and the input first port 121 are connected through magnetic connection, stability of electrical connection can be increased, and disconnection of the input first port 121 and the output first port 111 due to external force is avoided.
The output second port 114 and the input second port 124 are for passing DP signals, the output third port 115 and the input third port 125 are for passing HDMI signals; the output switching chip 112 and the input switching chip 122 are TS3DV642 in model, and the output control module 113 and the input control module 123 are single-chip microcomputers.
The a2 pin of the output first port 111 is electrically connected to the D1-pin of the output switching chip 112, the A3 pin of the output first port 111 is electrically connected to the D1+ pin of the output switching chip 112, the a4 pin of the output first port 111 is electrically connected to the D0-pin of the output switching chip 112, the a5 pin of the output first port 111 is electrically connected to the D0+ pin of the output switching chip 112, the a7 pin of the output first port 111 is electrically connected to the SDA pin of the output switching chip 112, the A8 pin of the output first port 111 is electrically connected to the SCL pin of the output switching chip 112, the B5 pin of the output first port 111 is electrically connected to the HPD pin of the output switching chip 112, the B8 pin of the output first port 111 is electrically connected to the D3-pin of the output switching chip 112, the pin B9 of the output first port 111 is electrically connected to the pin D3+ of the output switch chip 112, the pin B10 of the output first port 111 is electrically connected to the pin D2-of the output switch chip 112, and the pin B11 of the output first port 111 is electrically connected to the pin D2+ of the output switch chip 112.
Specifically, the pin a2 of the output first port 111 communicates a DP-HD _ RX0P signal with the pin D1-of the output switching chip 112, the pin A3 of the output first port 111 communicates a DP-HD _ RX0N signal with the pin D1+ of the output switching chip 112, the pin a4 of the output first port 111 communicates a DP-HD _ RXCP signal with the pin D0-of the output switching chip 112, the pin a5 of the output first port 111 communicates a DP-HD _ RXCN signal with the pin D0+ of the output switching chip 112, the pin a7 of the output first port 111 communicates a DP-HD _ SDA signal with the pin of the output switching chip 112, the pin A8 of the output first port 111 communicates a SCL DP-HD _ DP signal with the pin SCL of the output switching chip 112, the pin B5 of the output first port 111 communicates a HD _ DP D signal with the pin HPD of the output switching chip 112, the pin B8 of the output first port 111 and the pin D3-of the output switch chip 112 transmit a DP-HD _ RX2P signal, the pin B9 of the output first port 111 and the pin D3+ of the output switch chip 112 transmit a DP-HD _ RX2N signal, the pin B10 of the output first port 111 and the pin D2-of the output switch chip 112 transmit a DP-HD _ RX1P signal, and the pin B11 of the output first port 111 and the pin D2+ of the output switch chip 112 transmit a DP-HD _ RX1N signal.
The SCL _ a pin of the output switch chip 112 is electrically connected to the 15 pin of the output third port 115, and the SDA _ a pin of the output switch chip 112 is electrically connected to the 16 pin of the output third port 115; the D0+ _ a pin of the output switch chip 112 is electrically connected to the 12 pins of the output third port 115, the D0- _ a pin of the output switch chip 112 is electrically connected to the 10 pin of the output third port 115, the D1+ _ a pin of the output switch chip 112 is electrically connected to the 9 pin of the output third port 115, the D1- _ a pin of the output switch chip 112 is electrically connected to the 7 pins of the output third port 115, the D2+ _ a pin of the output switch chip 112 is electrically connected to the 6 pins of the output third port 115, the D2- _ a pin of the output switch chip 112 is electrically connected to the 4 pins of the output third port 115, the D3+ _ a pin of the output switch chip 112 is electrically connected to the 2 pin of the output third port 115, the pin D3- _ a of the output switch chip 112 is electrically connected to the pin 1 of the output third port 115; the HPD _ a pin of the output switching chip 112 is electrically connected to the 19 pin of the output third port 115.
Specifically, the SCL _ a pin of the output switching chip 112141 communicates the DD _ CSCL signal with the 15 pin of the output third port 115, the SDA _ a pin of the output switching chip 112 communicates the DD _ CSDA signal with the 16 pin of the output third port 115, the D0+ _ a pin of the output switching chip 112 communicates the RXCN _1 signal with the 12 pin of the output third port 115, the D0- _ a pin of the output switching chip 112 communicates the RXCP _1 signal with the 10 pin of the output third port 115, the D1+ _ a pin of the output switching chip 112 communicates the RX0N _1 signal with the 9 pin of the output third port 115, the D1- _ a pin of the output switching chip 112 communicates the RX0P _1 signal with the 7 pin of the output third port 115, the D2+ _ a pin of the output switching chip 112 communicates the RX1 _1 signal with the 6 pin of the output third port 115, the pin D2 _ a of the output switching chip 112141 and the pin 4 of the output third port 115 transfer an RX1P _1 signal, the pin D3+ _ a of the output switching chip 112 and the pin 2 of the output third port 115 transfer an RX2N _1 signal, the pin D3 _ a of the output switching chip 112 and the pin 1 of the output third port 115 transfer an RX2P _1 signal, and the pin HPD _ a of the output switching chip 112 and the pin 19 of the output third port 115 transfer an HDMI-HPD signal.
The SCL _ B pin of the output switch chip 112 is electrically connected to the A8 pin of the output second port 114, and the SDA _ B pin of the output switch chip 112 is electrically connected to the B8 pin of the output second port 114; the D0+ _ B pin of the output switch chip 112 is electrically connected with the B2 pin of the output second port 114, the D0- _ B pin of the output switch chip 112 is electrically connected with the B3 pin of the output second port 114, the D1+ _ B pin of the output switch chip 112 is electrically connected to the a11 pin of the output second port 114, the D1- _ B pin of the output switch chip 112 is electrically connected with the a10 pin of the output second port 114, the D2+ _ B pin of the output switch chip 112 is electrically connected with the B11 pin of the output second port 114, the D2- _ B pin of the output switch chip 112 is electrically connected with the B10 pin of the output second port 114, the D3+ _ B pin of the output switch chip 112 is electrically connected to the a2 pin of the output second port 114, the D3- _ B pin of the output switch chip 112 is electrically connected with the A3 pin of the output second port 114.
Specifically, the SCL _ B pin of the output switch chip 112 and the A8 pin of the output second port 114 transmit an AUXP signal, the SDA _ B pin of the output switch chip 112 and the B8 pin of the output second port 114 transmit an AUXN signal, the D0+ _ B pin of the output switch chip 112 and the B2 pin of the output second port 11412 transmit a LANE0P _1 signal, the D0- _ B pin of the output switch chip 112 and the B3 pin of the output second port 114 transmit a LANE0N _1 signal, the D1+ _ B pin of the output switch chip 112 and the a11 pin of the output second port 114 transmit a LANE1P _1 signal, the D1- _ B pin of the output switch chip 112 and the a 36 pin of the output second port 114 transmit a LANE1N _1 signal, the D2+ B pin of the output switch chip 112 and the B39892 pin of the output second port 114 transmit a lan 8938 signal, the pin D2- _ B of the output switching chip 112 and the pin B10 of the output second port 114 transfer a LANE2N _1 signal, the pin D3+ _ B of the output switching chip 112 and the pin a2 of the output second port 114 transfer a LANE3P _1 signal, and the pin D3- _ B of the output switching chip 112 and the pin A3 of the output second port 114 transfer a LANE3N _1 signal.
It can be understood that there are A, B two channels in the output switch chip 112 for transmitting HDMI signals and DP signals, the output first port 111 is connected to the output switch chip 112 for transmitting HDMI signals or DP signals, the output switch chip 112 is connected to the output third port 115 or the output second port 114 for transmitting HDMI signals or DP signals through A, B channels, or any one of the output third port 115 and the output second port 114 is connected to the output switch chip 112 for transmitting HDMI signals or DP signals, the output switch chip 112 switches A, B channels to transmit signals corresponding to the input switch chip 112, so that the video signal switch device 11 can transmit corresponding signals according to the corresponding signals, and further, the high level or the low level of the signals transmitted by the output switch chip 112 through the HPD _ B pin selects a channel corresponding to the A, B channel to transmit corresponding signals, the output switching chip 112 can automatically switch channels to transmit signals, so that the automation degree of the video signal switching device 1 is improved, and the manual operation step can be omitted.
It can be understood that the HPD _ a pin of the output switching chip 112 and the 19 pin of the output third port 115 transmit an HDMI-HPD signal, the B5 pin of the output first port 111 and the HPD pin of the output switching chip 112 transmit a DP-HD _ HPD signal, the DP-HD _ HPD signal is distinguished by a high-low level signal of the DP-HD _ HPD signal, so that the output switching chip 112 knows the type of the signal currently transmitted by the output first port 111, and further switches a A, B channel to transmit a corresponding signal, and transmits the HDMI-HPD signal to the output third port 115 to control the on/off of the output third port 115, so as to transmit the corresponding HDMI signal or DP signal to the corresponding port; in addition, when the output third port 115 or the output second port 114 transmits a signal to the output switching chip 112, the output third port 115 transmits an HDMI-HPD signal, and the HDMI-HPD signal is used to identify whether the current port transmits a signal to the output switching chip 112, so as to identify the type of the signal transmitted to the output switching chip 112, and further transmit a corresponding signal to the output first port 111, and at the same time, the output switching chip 112 transmits a control signal to the output control module 113, so that the output first port 111 can transmit a corresponding signal to the outside, further, the output control module 113 can further switch the channel of the output switching chip 112 by transmitting the control signal, so that the output switching chip 112 can switch the corresponding channel, so that the output control module 113 can control the output switching chip 112 to switch the channel, the user can send a command to the output control module 113 to send a control signal to control the output switching chip 112 to switch channels to transmit signals, so that the video signal switching device 1 can output corresponding signals according to the user's needs, and the practicability of the signal switching signals is improved.
The output control module 113 is electrically connected to a SEL2 pin of the output switching chip 112, and the output control module 113 is electrically connected to a B4 pin of the output first port 111.
It can be understood that the output control module 113 is respectively connected to the SEL2 pin and the B4 pin of the output switching chip 112, the output control module 113 can control the channel selection of the output switching chip 112 by using the level signal as the level signal, and by identifying the signal type of the output second port 114, synchronously sends the control signal to the output switching chip 112 to control the output switching chip 112 to switch the channel to transmit the corresponding signal, so that the practicability of the video signal switching apparatus 1 is improved.
The input circuit 12 includes an input first port 121, an input switching chip 122, an input control module 123, an input second port 124, and an input third port 125; the input first port 121, the input second port 124, and the input third port 125 are electrically connected to the input switching chip 122, the input control module 123 is electrically connected to the input switching chip 122 and the input first port 121, the input switching chip and the output switching chip are used for channel switching of transmission of signals of different formats, and the input control module is used for identifying input signals.
The circuit structure and the transmission signal of the input circuit 12 are the same as those of the output circuit 11, and are not described herein.
The HPD _ a pin of the input switching chip 122 and the 19 pin of the input third port 125 transmit an HDMI-HPD signal, the B5 pin of the input first port 121 and the HPD pin of the input switching chip 122 transmit a DP-HD _ HPD signal, the input switching chip 122 knows the signal type of currently input data through the high/low level of the HDMI-HPD signal, a port selected from the input second port 124 and the input third port 125 is transmitted to the input switching chip 122, the input switching chip 122 sends a control signal to the input control module 123, the input control module 123 controls the input first port 121 to transmit a video signal corresponding to the input, so that the video signal switching device 1 can select a channel transmission according to the current signal type, thereby facilitating fast plugging and unplugging of the device, the practicability of the video signal switching circuit is increased.
The input control module 123 and the output control module 113 may synchronize control signals with each other, the input control module 123 recognizes and knows the type of the currently input video signal through the input switching chip 122, the input control module 123 sends control signals to the input first port 121 and the input switching chip 122 to enable the input circuit 12 to output a corresponding video signal, the input control module 123 and the output control module 113 synchronize control signals with each other to enable the output control module 113 to control the output first port 111 and the output switching chip 112 to switch channels to output a corresponding video signal through control signals, so that the output video signal is output according to the originally input video signal, the signals are transmitted in the video signal switching device 1 according to the corresponding channels, and the video signal switching device 1 may automatically switch the output channels, further, the signal can be normally transmitted through the video signal switching equipment 1, so that the automation of the video signal switching equipment 1 can be improved, and the step of manual operation can be omitted; further, the user may send an instruction to the input control module 123 and the output control module 113, and specify the type of the signal that needs to be transmitted currently, so that the output control module 113 knows the type of the signal that needs to be transmitted currently, and then controls the types of the output signals of the output first port 111 and the input first port 121, so that the signal switching device outputs the signal that the user needs, so that the signal switching device transmits the signal according to the needs of the user, and the practicability of the signal switching device is improved.
Referring to fig. 4, the first output port includes a magnetic member, a housing, and a connecting member 13, the connecting member 13 is disposed in the housing, and the magnetic member is disposed around the housing.
The input port 117, the input first port 121, the output port 116 and the output first port 111 are simultaneously provided with a connecting piece 13, and the connecting piece 13 is used for signal transmission; the connecting pieces 13 are correspondingly arranged in rows, and signals transmitted by the connecting pieces 13 in each row are symmetrically arranged.
The number of the connectors 13 input into the first port 121 is equal to the maximum number of the connectors 13 input into the second port 124 or the third port 125, and the number of the connectors 13 output into the first port 111 is equal to the maximum number of the connectors 13 output into the second port 114 or the third port 115, it can be understood that the number of the connectors 13 input into the first port 121 is equal to the maximum number of the connectors 13 input into the second port 124 or the third port 125, so that the first port 121 can output signals corresponding to all the connectors 13 of the second port 114 and the third port, thereby avoiding data loss in signal transmission and ensuring authenticity of signal transmission.
The connecting pieces 13 comprise contact ends, the connecting pieces 13 with large contact end areas are used for transmitting electric signals, the connecting pieces 13 with small contact end areas are used for transmitting data signals, and particularly, the connecting pieces 13 in the first row, the connecting pieces 13 in the last row and at least one row of connecting pieces 13 in the center position are large contact ends.
Optionally, the number of connections 13 of the output first port 111 to the input first port 121 is at least 24.
Referring to fig. 5 to 8, a display apparatus 100 includes a display device 101 and a base 102, which are separately disposed, wherein the base 102 is connected to the display device 101; the display device 101 and the base 102 are respectively provided with a video signal switching device 1, and the video signal switching device 1 transmits different types of signals provided by different types of connectors 12.
Specifically, the base 102 and the display device 101 are electrically connected through the video signal switching device 1 to perform data signal transmission or electrical signal transmission;
it can be understood that the display device 101 and the base 102 transmit various video signals through the video signal switching device 1, so that the display device 101 and the base 102 transmit electric signals and data signals through the video signal switching device 1, the video signal switching device 1 is suitable for different signal transmissions, the number of ports arranged on the display device 100 can be reduced, meanwhile, the display device 100 can be plugged and unplugged quickly through the video signal switching device 1, and the practicability and convenience of the display device 100 are improved.
The base 102 further includes a main controller 1021, where the main controller 1021 is configured to provide a display signal to the display device 101 to control the display device 101 to display, and the display device 101 is a touch screen.
It can be understood that the display device 101 can perform touch operation by fingers to perform function adjustment, but is limited to display function, the base 102 includes a main controller 1021, the display device 101 has no main controller 1021, that is, the display device 101 cannot perform display autonomously, and needs to be connected to the base 102 wirelessly for further display, so that the base 102 not only has a supporting function, but also can perform data transmission with the display device 101, thereby improving interactivity between the base 102 and the display device 101, further, by connecting the video signal switching device 1, various signals are transmitted, and various signals are transmitted through a port to replace one signal of the port, thereby improving practicability of the display device 100.
Compared with the prior art, the video signal switching equipment and the display device provided by the invention have the following advantages:
1. the input circuit inputs signals with different formats through at least two input ports, the signals are input into the output circuit from one port, the output circuit correspondingly outputs signals with different formats through at least two output ports, the input switching chip can switch channels of the output signals, the output switching chip can transmit the signals according to the corresponding channels, port transmission signals with various signal types are output through a single port, and the signals are correspondingly output through multiple ports, so that the video signal switching equipment can transmit the signals with various formats, the change of the original signals is avoided, the authenticity of signal transmission is ensured, further, the transmission of the signals can be disconnected by disconnecting the input first port and the output first port of the video signal switching equipment, namely the input first port and the output first port are in breakable connection, and the equipment can be quickly plugged and unplugged to disconnect the signal transmission path, the video signal switching equipment can be directly plugged and unplugged from the port, and the convenience and the practicability of the video signal switching equipment are improved.
2. The number of the connecting pieces input into the first port is equal to the maximum number of the connecting pieces input into the second port or the third port, so that the first port can correspondingly output signals corresponding to all the connecting pieces of the second port and the third port, data loss in signal transmission is avoided, and the authenticity of signal transmission is ensured.
3. The utility model discloses a signal type of the arbitrary connecting piece of input first port and output first port self-defining and the quantity of the connecting piece of selection for transmitting signal, make the number and the corresponding position of the connecting piece that the connecting piece optional signal transmission needs, in order to carry out signal transmission, the connecting piece is suitable for different signal transmission, the practicality of connecting piece has been improved, port on the reducible electronic equipment sets up quantity, the electronic equipment of being convenient for carries out quick plug, avoid matching the port according to signal type, increase the practicality and the convenience of electronic equipment, the while increases the variety of the transmission information type of input first port and output first port.
4. The input switching chip and the output switching chip are respectively provided with A, B two channels, the A channel transmits HDMI signals to the input third port and the output third port, the B channel transmits Displayport signals to the input second port and the output second port, the input switching chip and the output switching chip select a channel corresponding to the A, B channel through the high level or the low level of the HPD _ B pin to transmit corresponding signals, so that the input switching chip and the output switching chip can automatically switch the channels to transmit signals, the automation degree of the video signal switching equipment is improved, and the step of manual operation can be omitted.
5. A display device is provided with video signal switching equipment on a display device and a base which are arranged in a split mode, the display device and the base are electrically connected through the video signal switching equipment to transmit electric signals and data signals, the video signal switching equipment can transmit various video signals, the video signal switching equipment is arranged on the display device and the base to transmit various video signals, the number of ports can be reduced, the display device can be quickly plugged from the base, signals are prevented from being matched by the display device through signal types, and the practicability and convenience of the display device are improved.
6. Set up main control unit on the base, display device only possesses the display function, display device need with the wireless material of base be connected in order further to show, make the base not only have the supporting role, can also and display device between carry out data transmission, the interactivity of base with display device has been improved, furtherly, through the connection of video signal switching equipment, transmit multiple signal through a port and replace a port signal, improve display device's practicality.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents and improvements made within the spirit of the present invention are intended to be included within the scope of the present invention.
Claims (10)
1. A video signal switching apparatus characterized by: the circuit comprises an input circuit and an output circuit, wherein the input circuit and the output circuit are electrically connected;
the input circuit comprises an input first port, an input switching chip, an input control module and at least two input ports, and the output circuit comprises an output first port, an output switching chip, an output control module and at least two output ports; the input switching chip and the output switching chip are used for switching channels for transmitting signals in different formats, the input control module is used for identifying input signals, and the output control module is used for identifying output signals;
the input circuit inputs signals with different formats through at least two input ports and transmits the signals into the output circuit from one port, and the output circuit correspondingly outputs the signals with different formats through at least two output ports.
2. A video signal switching apparatus according to claim 1, wherein: the input ports are respectively an input second port and an input third port, and the output ports are respectively an output second port and an output third port;
the output second port and the input second port pass DP signals, and the output third port and the input third port pass HDMI signals;
the output first port, the output second port and the output third port are electrically connected with the output switching chip respectively, the input first port, the input second port and the input third port are electrically connected with the input switching chip respectively, the output control module is electrically connected with the output switching chip and the output first port, and the input control module is electrically connected with the input switching chip and the input first port.
3. A video signal switching apparatus according to claim 2, wherein: the input port, the input first port, the output port and the output first port are simultaneously provided with connecting pieces, and the connecting pieces are used for signal transmission;
the number of connectors input to the first port is equal to the maximum number of connectors input to the second port or the third port;
the number of connections of the output first port is equal to the maximum number of connections of the output second port or the output third port.
4. A video signal switching apparatus as claimed in claim 1, wherein: the output switching chip and the input switching chip are TS3DV642 in model, and the output control module and the input control module are single-chip microcomputers.
5. A video signal switching apparatus as claimed in claim 1, wherein: the input switching chip and the output chip only change signal transmission channels and do not change signal formats.
6. A video signal switching apparatus as claimed in claim 3, wherein: the output first port and the input first port are magnetic attraction ports.
7. A video signal switching apparatus as claimed in claim 3, wherein: the number of connections of the output first port to the input first port is at least 24;
the connecting piece comprises a contact end, the connecting piece with the large contact end area is used for transmitting an electric signal, and the connecting piece with the small contact end area is used for transmitting a data signal;
the connecting pieces are correspondingly arranged in rows, and signals transmitted by the connecting pieces in each row are symmetrically arranged.
8. A video signal switching apparatus as claimed in claim 2, characterized in that: the pin A2 of the output first port is electrically connected with the pin D1-of the output switching chip, the pin A3 of the output first port is electrically connected with the pin D1+ of the output switching chip, the pin A4 of the output first port is electrically connected with the pin D0-of the output switching chip, the pin A5 of the output first port is electrically connected with the pin D0+ of the output switching chip, the pin A7 of the output first port is electrically connected with the pin SDA of the output switching chip, the pin A8 of the output first port is electrically connected with the pin SCL of the output switching chip, the pin B5 of the output first port is electrically connected with the pin HPD 3-of the output switching chip, the pin B8 of the output first port is electrically connected with the pin D3-of the output switching chip, and the pin B9 of the output first port is electrically connected with the pin D3+ of the output switching chip, the pin B10 of the output first port is electrically connected with the pin D2-of the output switching chip, and the pin B11 of the output first port is electrically connected with the pin D2+ of the output switching chip;
the control module is electrically connected with an SEL2 pin of the output switching chip, and the control module is electrically connected with a B4 pin of the first port;
an SCL _ A pin of the output switching chip is electrically connected with a 15 pin of the output third port, and an SDA _ A pin of the output switching chip is electrically connected with a 16 pin of the output third port;
the pin D0+ _ A of the output switching chip is electrically connected with the pin 12 of the output third port, the pin D0- _ A of the output switching chip is electrically connected with the pin 10 of the output third port, the pin D1+ _ A of the output switching chip is electrically connected with the pin 9 of the output third port, the pin D1- _ A of the output switching chip is electrically connected with the pin 7 of the output third port, the pin D2+ _ A of the output switching chip is electrically connected with the pin 6 of the output third port, the pin D2- _ A of the output switching chip is electrically connected with the pin 4 of the output third port, the pin D3+ _ A of the output switching chip is electrically connected with the pin 2 of the output third port, the D3- _ A pin of the output switching chip is electrically connected with the 1 pin of the output third port;
the HPD _ A pin of the output switching chip is electrically connected with the 19 pin of the output third port;
the SCL _ B pin of the output switching chip is electrically connected with the A8 pin of the output second port, and the SDA _ B pin of the output switching chip is electrically connected with the B8 pin of the output second port;
the D0+ _ B pin of the output switching chip is electrically connected with the B2 pin of the output second port, the D0- _ B pin of the output switching chip is electrically connected with the B3 pin of the output second port, the D1+ _ B pin of the output switching chip is electrically connected with the A11 pin of the output second port, the D1- _ B pin of the output switching chip is electrically connected with the A10 pin of the output second port, the D2+ _ B pin of the output switching chip is electrically connected with the B11 pin of the output second port, the D2- _ B pin of the output switching chip is electrically connected with the B10 pin of the output second port, the D3+ _ B pin of the output switching chip is electrically connected with the A2 pin of the output second port, the D3- _ B pin of the output switching chip is electrically connected with the A3 pin of the output second port.
9. A display device, characterized in that: the display device comprises a display device and a base which are arranged in a split mode, wherein the base is connected with the display device;
the display device and the base are respectively provided with the video signal switching device of any one of the claims 1 to 8;
the base further comprises a main controller, and the main controller is used for providing display data to the display equipment to control the display equipment to display.
10. A display device as claimed in claim 9, characterized in that: the display device is a touch screen.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010480998.5A CN111641791A (en) | 2020-05-30 | 2020-05-30 | Video signal switching equipment and display device |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202010480998.5A CN111641791A (en) | 2020-05-30 | 2020-05-30 | Video signal switching equipment and display device |
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| CN111641791A true CN111641791A (en) | 2020-09-08 |
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