CN212012861U - Signal conversion device, display equipment and display system - Google Patents
Signal conversion device, display equipment and display system Download PDFInfo
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- CN212012861U CN212012861U CN202020452399.8U CN202020452399U CN212012861U CN 212012861 U CN212012861 U CN 212012861U CN 202020452399 U CN202020452399 U CN 202020452399U CN 212012861 U CN212012861 U CN 212012861U
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Abstract
The utility model relates to a signal conversion device, display device and display system, signal conversion device include but open plug standard interface board, signal conversion module, signal trigger module and signal switching module; the open type pluggable standard interface board is used for receiving video signals. The signal conversion module is connected with the open type pluggable standard interface board and is used for converting the video signal of the second signal type into the video signal of the first signal type. The signal switching module is connected with the open type pluggable standard interface board and the signal conversion module and is used for sending the video signal of the first signal type to the external display device. The signal triggering module is connected with the open type pluggable standard interface board and the signal conversion module and is used for controlling the signal conversion module to convert the video signal type according to the signal type of the video signal. The utility model discloses the video signal who supports first signal type and second signal type simultaneously normally shows on display device.
Description
Technical Field
The utility model relates to a signal processing technology field especially relates to signal conversion equipment, display device and display system.
Background
The Open Plug Specification (OPS) is a standardized digital interface Specification. The OPS device may be manufactured by manufacturing a connection interface on a main board of an Intel architecture, and connecting the connection interface with various input/output interfaces on the main board. The OPS equipment is connected with the display equipment to form a simple computer. The method is very convenient to install, upgrade and maintain, and has more prominent advantages particularly when being connected with large-screen display equipment. Thus, OPS devices are often used in conjunction with display devices.
For OPS devices, there are two types of video signals generated by the OPS devices, namely, High Definition Multimedia Interface (HDMI) signals or display Interface (DP) signals. For an OPS device generating an HDMI signal, it can be normally displayed and used after being directly connected to a display device. And for the OPS device generating the DP signal, the OPS device cannot be normally used and displayed after being directly connected with the display device. Therefore, a display scheme supporting a plurality of video signals simultaneously is needed in the prior art.
SUMMERY OF THE UTILITY MODEL
In view of the above, the present invention has been made to provide a signal conversion apparatus, a display device, and a display system that overcome or at least partially solve the above problems.
According to a first aspect of the present invention, the present invention provides a signal conversion device, said device comprising an open pluggable standard interface board, a signal conversion module, a signal trigger module and a signal switching module;
the open type pluggable standard interface board is used for receiving video signals; wherein the signal type of the video signal is a first signal type or a second signal type;
the signal conversion module is connected with the open pluggable standard interface board and is used for converting the video signal of the second signal type into the video signal of the first signal type;
the signal switching module is connected with the open type pluggable standard interface board and the signal conversion module and is used for sending the video signal of the first signal type to an external display device;
the signal trigger module is connected with the open type pluggable standard interface board and the signal conversion module and is used for controlling the signal conversion module to convert the video signal type according to the signal type of the video signal received by the open type pluggable standard interface board;
when the video signal received by the open pluggable standard interface board is the video signal of the first signal type, the open pluggable standard interface board sends the video signal of the first signal type to the signal switching module, and the signal switching module sends the video signal of the first signal type to the external display device;
when the video signal received by the open pluggable standard interface board is the video signal of the second signal type, the open pluggable standard interface board sends the video signal of the second signal type to the signal conversion module, the signal conversion module converts the signal type of the video signal from the second signal type into the first signal type and sends the first signal type to the signal switching module, and the signal switching module sends the video signal of the first signal type to the external display device.
Preferably, the signal triggering module comprises a triggering buffer, a trigger and a switching tube;
the signal input end of the trigger buffer is connected with the open type pluggable standard interface board, and the signal output end of the trigger buffer is connected with the signal input end of the trigger;
the first output end of the trigger is connected with the signal conversion module; the second output end of the trigger is connected with the base electrode of the switch tube, the collector electrode of the switch tube is connected with a forward direct current voltage, the collector electrode of the switch tube is connected with a channel switching pin of the signal switching module, and the emitter electrode of the switch tube is grounded;
when the type of the video signal is the second signal type, the open type pluggable standard interface board pulls the level of the signal input end of the trigger buffer to a low level, the signal output end of the trigger buffer outputs the low level, so that the level of the signal input end of the trigger is pulled to the low level, the first output end of the trigger outputs the low level to control the signal conversion module to perform video signal type conversion, the second output end of the trigger outputs the low level to pull down the base level of the switch tube, and the switch tube is in a cut-off state, so that the channel switching pin is at the high level.
Preferably, the signal trigger module is further connected to the signal switching module, and the signal trigger module is further configured to control the signal switching module to switch signal transmission channels, where the signal transmission channels include a first signal transmission channel and a second signal transmission channel;
the first signal transmission channel is used for transmitting the video signal of the first signal type sent by the open pluggable standard interface board;
the second signal transmission channel is used for transmitting the video signal of the first signal type sent by the signal conversion module;
when the signal switching module detects that the channel switching pin is at a low level, the first signal transmission channel is controlled to transmit the video signal;
and when the signal switching module detects that the channel switching pin is at a high level, controlling the second signal transmission channel to transmit the video signal.
Preferably, the signal trigger module further includes a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor;
the node between the open type pluggable standard interface board and the signal input end of the trigger buffer is grounded through the first resistor;
a node between a power supply end of the trigger buffer and the forward direct-current voltage is grounded through the first capacitor;
the signal output end of the trigger buffer is connected with the signal input end of the trigger through the second resistor;
a node between a power supply end of the trigger and the forward direct-current voltage is grounded through the second capacitor;
a node between the second capacitor and a ground terminal is connected with a preset signal terminal of the trigger through the third resistor;
the node between the power supply end of the trigger and the forward direct-current voltage is also grounded through the fourth resistor and the third capacitor in sequence;
a node between the fourth resistor and the third capacitor is connected with a zero clearing end of the trigger;
a second output end of the trigger is connected with a base electrode of the switch tube through the fifth resistor, a collector electrode of the switch tube is connected with a forward direct current voltage through the sixth resistor, a junction point between the collector electrode of the switch tube and the sixth resistor is connected with a channel switching pin of the signal switching module, and an emitter electrode of the switch tube is grounded;
a junction between the fifth resistor and the base electrode of the switching tube is connected with a junction between the emitter electrode and the ground terminal of the switching tube through the seventh resistor;
the first output end of the trigger is grounded through the eighth resistor and the ninth resistor.
Preferably, the first signal type is a high-definition multimedia interface signal, and the second signal type is a display interface signal.
Preferably, the open pluggable standard interface board comprises a video signal input interface, a first video signal output end, a second video signal output end and a trigger signal output end;
the video signal input interface is used for receiving the video signal;
the first video signal output end is connected with the signal switching module, the second video signal output end is connected with the signal switching module through the signal conversion module, and the trigger signal output end is respectively connected with the signal conversion module and the signal switching module through the signal trigger module;
preferably, the video signal input interface is an intelligent display module interface.
Preferably, the signal switching module is provided with a video signal output interface, the video signal output interface is used for being connected with the external display device, and the video signal output interface is a high-definition multimedia interface.
According to a second aspect of the present invention, the present invention provides a display device, comprising a display device and the signal conversion device of the first aspect;
the signal conversion device is connected with the display device through the signal switching module.
According to a third aspect of the present invention, the present invention provides a display system, comprising an open type pluggable standard device, a display device and the signal conversion device of the first aspect;
the signal conversion device is connected with the open type pluggable standard device through the open type pluggable standard interface board;
the signal conversion device is connected with the display device through the signal switching module.
According to the utility model discloses a but signal conversion equipment, open plug standard equipment, display device and system, this signal conversion equipment includes but open plug standard interface board, signal conversion module, signal trigger module and signal switching module. The open type pluggable standard interface board is used for receiving video signals; wherein the signal type of the video signal is a first signal type or a second signal type. And the signal conversion module is connected with the open type pluggable standard interface board and is used for converting the video signal of the second signal type into the video signal of the first signal type. And the signal switching module is connected with the open type pluggable standard interface board and the signal conversion module and is used for sending the video signal of the first signal type to the external display device. And the signal trigger module is connected with the open type pluggable standard interface board and the signal conversion module and is used for controlling the signal conversion module to convert the video signal type according to the signal type of the video signal received by the open type pluggable standard interface board. When the video signal received by the open pluggable standard interface board is the video signal of the first signal type, the open pluggable standard interface board sends the video signal of the first signal type to the signal switching module, and the signal switching module sends the video signal of the first signal type to the external display device. When the video signal received by the open type pluggable standard interface board is the video signal of the second signal type, the open type pluggable standard interface board sends the video signal of the second signal type to the signal conversion module, the signal conversion module converts the signal type of the video signal from the second signal type into the first signal type and sends the first signal type to the signal switching module, and the signal switching module sends the video signal of the first signal type to the external display device. Thereby the utility model provides a support multiple video signal's demonstration scheme not only can make the video signal who receives have first signal type normally show on display device, can also make the video signal who receives have second signal type normally show on display device, has increased display device's scalability, use convenient and fast.
The above description is only an overview of the technical solutions of the present invention, and in order to make the technical means of the present invention more clearly understood, the present invention may be implemented according to the content of the description, and in order to make the above and other objects, features, and advantages of the present invention more obvious and understandable, the following detailed description of the present invention is given.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to refer to like parts throughout the drawings. In the drawings:
fig. 1 shows a schematic structural diagram of a signal conversion device in an embodiment of the present invention;
fig. 2 is a circuit diagram of an open type pluggable specification device according to an embodiment of the present invention;
fig. 3 shows a circuit structure diagram of an open type pluggable standard interface board in an embodiment of the present invention;
fig. 4 shows a circuit structure diagram of a signal conversion module in an embodiment of the present invention;
fig. 5 shows a circuit structure diagram of a signal trigger module according to an embodiment of the present invention;
fig. 6 shows a circuit structure diagram of the signal switching module in the embodiment of the present invention.
The video signal switching device comprises a shell, a signal switching module, a video signal input interface, a first video signal output end, a second video signal output end and a trigger signal output end, wherein the shell 101 is an open type pluggable standard interface board, the signal switching module 102, the signal triggering module 103, the signal switching module 104, the video signal input interface A, the first video signal output end B, the second video signal output end C and the trigger signal output end D.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
The first embodiment of the present invention provides a signal conversion device, as shown in fig. 1, the device includes an open type pluggable standard interface board 101, a signal conversion module 102, a signal trigger module 103 and a signal switching module 104.
The openplug specification interface board 101 is configured to receive a video signal, where the signal type of the video signal is a first signal type or a second signal type. The signal conversion module 102 is connected to the open pluggable specification interface board 101, and is configured to convert the video signal of the second signal type into the video signal of the first signal type. The signal switching module 104 is connected to both the open pluggable specification interface board 101 and the signal conversion module 102, and is configured to send the video signal of the first signal type to the external display device. The signal triggering module 103 is connected to both the open pluggable specification interface board 101 and the signal conversion module 102, and is configured to control the signal conversion module 102 to perform video signal type conversion according to a signal type of a video signal received by the open pluggable specification interface board 101.
The following describes the operation of the signal conversion device in detail:
first, the signal conversion device is connected to the open type pluggable specification device through the open type pluggable specification interface board 101 inside the signal conversion device. The utility model discloses in, but open plug standard device is OPS equipment promptly, a concrete circuit structure of OPS equipment, as shown in figure 2. After the open pluggable specification interface board 101 is connected to the open pluggable specification device, the video signal transmitted by the open pluggable specification device is received. The signal type of the video signal is a first signal type or a second signal type, the first signal type is a high definition multimedia interface signal, namely an HDMI signal, and the second signal type is a display interface signal, namely a DP signal. That is, in the present invention, the OPS device may be an OPS device generating an HDMI signal, or may be an OPS device generating a DP signal, and when the OPS device is an OPS device generating an HDMI signal, the open pluggable standard interface board 101 receives the HDMI signal transmitted by the OPS device; when the OPS device is an OPS device that generates a DP signal, the open pluggable specification interface board 101 receives the DP signal transmitted by the OPS device.
Further, when the video signal received by the open pluggable specification interface board 101 is the video signal of the first signal type, the open pluggable specification interface board 101 sends the video signal of the first signal type to the signal switching module 104, and the signal switching module 104 sends the video signal of the first signal type to the external display device.
That is, when the type of the video signal is an HDMI signal, the open-type pluggable specification interface board 101 sends the HDMI signal to the signal switching module 104 after receiving the HDMI signal, and the signal switching module 104 directly outputs the HDMI signal to the display device, so that the display device can directly display based on the HDMI signal.
Further, when the video signal received by the open pluggable specification interface board 101 is a video signal of the second signal type, the open pluggable specification interface board 101 sends the video signal of the second signal type to the signal conversion module 102, the signal conversion module 102 converts the signal type of the video signal from the second signal type into the first signal type and sends the first signal type to the signal switching module 104, and the signal switching module 104 sends the video signal of the first signal type to the external display device.
That is, when the type of the video signal is a DP signal, the open pluggable specification interface board 101 sends the DP signal to the signal conversion module 102 after receiving the DP signal, the signal conversion module 102 converts the DP signal into an HDMI signal, the signal conversion module 102 sends the converted HDMI signal to the signal switching module 104, the signal trigger module 103 further controls the signal switching module 104 to output the converted HDMI signal to the display device, and the display device displays the HDMI signal.
The utility model provides a support multiple video signal's demonstration scheme, but not only can make the video signal's of the first signal type of output open plug standard device normally show on display device, but also can make the video signal's of the second signal type of output open plug standard device normally show on display device, but increased open plug standard device and display device's scalability, use convenient and fast.
The following describes each configuration of the signal conversion device:
as shown in fig. 3, the openplug specification interface board 101 includes a video signal input interface a, a first video signal output terminal B, a second video signal output terminal C, and a trigger signal output terminal D. Specifically, the video signal input interface a is used to connect with an open pluggable specification device to receive a video signal from the open pluggable specification device. The video signal input interface a is an interface adapted to the open-type pluggable specification device. The present invention provides a video signal input interface a, which is a Smart Display Module (SDM) interface, i.e., a PCI-e Slot x8 interface. The first video signal output end B is connected with the signal switching module 104, the second video signal output end C is connected with the signal switching module 104 through the signal switching module 102, and the trigger signal output end D is connected with the signal switching module 104 and the signal switching module 102 through the signal triggering module 103.
For the signal conversion module 102, it may be implemented by a DP-to-HDMI chip, such as a PS176 chip, and specifically, the circuit structure of the signal conversion module 102 is as shown in fig. 4.
For the signal trigger module 103, first, the trigger signal output end D of the open type pluggable standard interface board 101 is connected to the signal trigger module 103, and when the type of the video signal is the second signal type, the open type pluggable standard interface board 101 sends a trigger signal to the signal trigger module 103 through the trigger signal output end D, so that the signal trigger module 103 controls the signal conversion module 102 to convert the signal type according to the trigger signal, and controls the signal switching module 104 to switch the signal transmission channel.
Further, the signal triggering module 103 includes a triggering buffer, a trigger and a switch tube. The signal input end of the trigger buffer is connected with the trigger signal output end D of the open pluggable standard interface board 101, and the signal output end of the trigger buffer is connected with the signal input end of the trigger. The first output end of the trigger is connected with the signal conversion module 102 and used for controlling the signal conversion module 102 to perform video signal type conversion, the second output end of the trigger is connected with the base electrode of the switch tube, the collector electrode of the switch tube is connected with the forward direct current voltage, the collector electrode of the switch tube is connected with the channel switching pin of the signal switching module 104, and the emitter electrode of the switch tube is grounded.
When the type of the video signal is the second signal type, the open type pluggable standard interface board 101 pulls the level of the signal input end of the trigger buffer to the low level, the signal output end of the trigger buffer outputs the low level, so that the level of the signal input end of the trigger is pulled to the low level, the first output end of the trigger outputs the low level to control the signal conversion module 102 to perform video signal type conversion, the second signal output end of the trigger outputs the low level to pull down the base level of the switch tube, and the switch tube is in the cut-off state, so that the channel switching pin is at the high level. The trigger is used for triggering the signal conversion module 102 to convert the signal type, and simultaneously triggering the signal switching module 104 to switch the signal transmission channel. The trigger buffer is used to prevent the circuit from flowing back.
Specifically, as shown in fig. 5, the signal trigger module includes a trigger buffer (U4), a trigger (U5), a switch tube (3904), a first capacitor (C43), a second capacitor (C44), a third capacitor (C45), a first resistor (R14), a second resistor (R13), a third resistor (R53), a fourth resistor (R49), a fifth resistor (R54), a sixth resistor (R44), a seventh resistor (R60), an eighth resistor (R16), and a ninth resistor (R52). The trigger buffer can be realized by an SN74LVC1G17-SOT23-5 chip, the trigger can be realized by an SN74LV1G74_ US8 chip, and the switch tube can be realized by a triode.
The node between the open type pluggable specification interface board 101 and the signal input end of the trigger buffer is grounded through a first resistor. The junction between the power supply terminal of the trigger buffer and the forward direct voltage is grounded through a first capacitor. And the signal output end of the trigger buffer is connected with the signal input end of the trigger through a second resistor. And a node between the power supply end of the trigger and the forward direct-current voltage is grounded through a second capacitor. And a node between the second capacitor and the grounding end is connected with the preset signal end of the trigger through the third resistor. And the node between the power supply end of the trigger and the forward direct-current voltage is also grounded through a fourth resistor and a third capacitor in sequence. And a node between the fourth resistor and the third capacitor is connected with the zero clearing end of the trigger. The second output end of the trigger is connected with the base electrode of the switch tube through a fifth resistor, the collector electrode of the switch tube is connected with the forward direct-current voltage through a sixth resistor, a junction point between the collector electrode of the switch tube and the sixth resistor is connected with a channel switching pin of the signal switching module 104, and the emitter electrode of the switch tube is grounded. And a junction between the fifth resistor and the base electrode of the switching tube is connected with a junction between the emitter electrode and the ground terminal of the switching tube through a seventh resistor. And the first output end of the trigger is grounded through the eighth resistor and the ninth resistor.
The signal input end of the trigger buffer is a pin A, the signal output end of the trigger buffer is a pin Y, the signal input end of the trigger is a pin CLK, the first output end of the trigger is a pin D, the second output end of the trigger is a pin Q, and the channel switching pin is a pin SHOW _ SEL.
Further, the signal triggering module 103 is further connected to the signal switching module 104, and the signal triggering module 103 is further configured to control the signal switching module 104 to switch signal transmission channels, where the signal transmission channels in the signal switching module 104 include a first signal transmission channel and a second signal transmission channel. The first signal transmission channel is used for transmitting a video signal of a first signal type sent by the open pluggable specification interface board 101. The second signal transmission channel is used for transmitting the video signal of the first signal type sent by the signal conversion module 102. When the signal switching module 104 detects that the channel switching pin is at a low level, the first signal transmission channel is controlled to transmit the video signal. When the signal switching module 104 detects that the channel switching pin is at a high level, the second signal transmission channel is controlled to transmit the video signal.
For the signal switching module 104, it can be implemented by using a switch, such as a CH447DS1-LQFP-48 chip, and specifically, the circuit structure of the signal switching module 104 is as shown in fig. 6.
In addition, the signal switching module 104 is provided with a video signal output interface, the video signal output interface is used for being connected with a display device, and the video signal output interface is a high-definition multimedia interface, that is, an HDMI interface.
Further, the operation of the signal conversion apparatus will be described below with reference to the above circuit configuration:
when the signal conversion device is used, the signal conversion device is connected between the open type pluggable standard device and the display device, a video signal input interface A in the signal conversion device is connected with the open type pluggable standard device, and a video signal output interface in the signal conversion device is connected with the display device.
Then, the open pluggable specification device can read and write information set by the system from the CMOS and transmit the information to the open pluggable specification interface board 101 after the power is turned on, the open pluggable specification device reads Extended Display Identification Data (EDID) of the display device to output a corresponding video signal, the type of the video signal may be an HDMI signal or a DP signal, and the type of the video signal is determined by the type of the open pluggable specification device.
When the OPS device is an OPS device generating a DP signal, the OPS-OK pin of the open pluggable specification interface board 101 is at a low level, the signal input terminal (i.e., pin a) of the trigger buffer is pulled down, the signal output terminal (i.e., pin Y) of the trigger buffer outputs a high level, at this time, the level of the signal input terminal (i.e., pin CLK) of the trigger is pulled up to a high level, and the first output terminal (i.e., pin D) of the trigger is controlled to output a low level, so as to control the signal conversion module 102 to perform the conversion of the video signal type. And the second output end (i.e. the pin Q) of the trigger outputs a low level, and pulls down the base level of the switching tube to control the switching tube to be in a cut-off state. At this time, since the switch tube is in the off state, the channel switching pin (i.e., the slow _ SEL pin) is directly connected to the dc voltage and is in the high level state, and when the signal switching module 104 detects that the channel switching pin is in the high level state, the signal transmission channel is switched to the second signal transmission channel, that is, the video signal of the first signal type output by the signal conversion module 102 is transmitted to the external display device through the second signal transmission channel.
When the OPS device is an OPS device generating an HDMI signal, the OPS-OK pin of the open pluggable specification interface board 101 is at a high level, and the signal input pin (i.e., pin a) of the trigger buffer is pulled high, then the signal output terminal (i.e., pin Y) of the trigger buffer outputs a low level, at this time, the level of the signal input terminal (i.e., pin CLK) of the trigger is pulled low to a low level, and the first output port (i.e., pin D) of the trigger is controlled to output a high level, so as to control the signal conversion module 102 to perform the conversion of the video information type. And the second output port (i.e. pin Q) of the flip-flop outputs a high level, which pulls up the base level of the switching tube to control the switching tube to be in a conducting state. At this time, since the switch tube is in the on state, the collector is grounded, the channel switching pin (i.e., the pin SHOW SEL) is in the low level state, and when the signal switching module 104 detects that the channel switching pin is in the low level state, the signal transmission channel is switched to the first signal transmission channel, that is, the video signal of the first signal type received by the open type pluggable standard interface board 101 is transmitted to the external display device through the first signal transmission channel.
When the open pluggable specification interface board 101 has no OPS device access, the circuit state is consistent with the OPS device accessing the open pluggable specification interface board 101 to generate the HDMI signal. Meanwhile, the open type pluggable specification interface board 101 further detects an access voltage, and when the access voltage is less than 0.8V, it is verified that no OPS device is accessed, and the action of sending the video signal is stopped (i.e., the TMDS signal sending circuit is disconnected), so that the external display device enters a standby state.
Based on same utility model design, the utility model discloses the second embodiment provides a display device, including display device and aforementioned first embodiment signal conversion equipment, signal conversion equipment passes through signal switching module 104 and is connected with display device. Since the signal conversion device has been described in detail in the first embodiment, the description of the embodiment will not be repeated. The display equipment is internally provided with the signal conversion device, so that the display equipment can be directly connected with the open type pluggable standard device without additional equipment for assisting in converting the video signal.
Based on same utility model design, the utility model discloses the third embodiment provides a display system, but including open plug standard device, display device and aforementioned first embodiment signal conversion equipment. The signal conversion device is connected with the open type pluggable specification device through the open type pluggable specification interface board 101, and the signal conversion device is connected with the display device through the signal switching module 104. Since the signal conversion device has been described in detail in the first embodiment, the description of the embodiment will not be repeated.
The algorithms and displays presented herein are not inherently related to any particular computer, virtual machine, or other apparatus. Various general purpose systems may also be used with the teachings herein. The required structure for constructing such a system will be apparent from the description above. Furthermore, the present invention is not directed to any particular programming language. It is appreciated that a variety of programming languages may be used to implement the teachings of the present invention as described herein, and any descriptions of specific languages are provided above to disclose the best modes of the invention.
In the description provided herein, numerous specific details are set forth. It is understood, however, that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.
Similarly, it should be appreciated that in the foregoing description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof for the purpose of streamlining the disclosure and aiding in the understanding of one or more of the various inventive aspects. However, the disclosed method should not be interpreted as reflecting an intention that: rather, the invention as claimed requires more features than are expressly recited in each claim. Rather, as the following claims reflect, inventive aspects lie in less than all features of a single foregoing disclosed embodiment. Thus, the claims following the detailed description are hereby expressly incorporated into this detailed description, with each claim standing on its own as a separate embodiment of this invention.
Those skilled in the art will appreciate that the modules in the device in an embodiment may be adaptively changed and disposed in one or more devices different from the embodiment. The modules or units or components of the embodiments may be combined into one module or unit or component, and furthermore they may be divided into a plurality of sub-modules or sub-units or sub-components. All of the features disclosed in this specification (including any accompanying claims, abstract and drawings), and all of the processes or elements of any method or apparatus so disclosed, may be combined in any combination, except combinations where at least some of such features and/or processes or elements are mutually exclusive. Each feature disclosed in this specification (including any accompanying claims, abstract and drawings) may be replaced by alternative features serving the same, equivalent or similar purpose, unless expressly stated otherwise.
Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features included in other embodiments, rather than other features, combinations of features of different embodiments are meant to be within the scope of the invention and form different embodiments. For example, in the following claims, any of the claimed embodiments may be used in any combination.
Various component embodiments of the invention may be implemented in hardware, or in software modules running on one or more processors, or in a combination thereof. Those skilled in the art will appreciate that a microprocessor or Digital Signal Processor (DSP) may be used in practice to implement some or all of the functionality of some or all of the components in accordance with embodiments of the present invention. The present invention may also be embodied as apparatus or device programs (e.g., computer programs and computer program products) for performing a portion or all of the methods described herein. Such a program implementing the invention may be stored on a computer readable medium or may be in the form of one or more signals. Such a signal may be downloaded from an internet website or provided on a carrier signal or in any other form.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and that those skilled in the art will be able to design alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses shall not be construed as limiting the claim. The word "comprising" does not exclude the presence of elements or steps not listed in a claim. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several distinct elements, and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by one and the same item of hardware. The usage of the words first, second and third, etcetera do not indicate any ordering. These words may be interpreted as names.
Claims (10)
1. A signal conversion device is characterized by comprising an open type pluggable standard interface board, a signal conversion module, a signal trigger module and a signal switching module;
the open type pluggable standard interface board is used for receiving video signals; wherein the signal type of the video signal is a first signal type or a second signal type;
the signal conversion module is connected with the open pluggable standard interface board and is used for converting the video signal of the second signal type into the video signal of the first signal type;
the signal switching module is connected with the open type pluggable standard interface board and the signal conversion module and is used for sending the video signal of the first signal type to an external display device;
the signal trigger module is connected with the open type pluggable standard interface board and the signal conversion module and is used for controlling the signal conversion module to convert the video signal type according to the signal type of the video signal received by the open type pluggable standard interface board;
when the video signal received by the open pluggable standard interface board is the video signal of the first signal type, the open pluggable standard interface board sends the video signal of the first signal type to the signal switching module, and the signal switching module sends the video signal of the first signal type to the external display device;
when the video signal received by the open pluggable standard interface board is the video signal of the second signal type, the open pluggable standard interface board sends the video signal of the second signal type to the signal conversion module, the signal conversion module converts the signal type of the video signal from the second signal type into the first signal type and sends the first signal type to the signal switching module, and the signal switching module sends the video signal of the first signal type to the external display device.
2. The apparatus of claim 1, wherein the signal triggering module comprises a trigger buffer, a trigger and a switch tube;
the signal input end of the trigger buffer is connected with the open type pluggable standard interface board, and the signal output end of the trigger buffer is connected with the signal input end of the trigger;
the first output end of the trigger is connected with the signal conversion module; the second output end of the trigger is connected with the base electrode of the switch tube, the collector electrode of the switch tube is connected with a forward direct current voltage, the collector electrode of the switch tube is connected with a channel switching pin of the signal switching module, and the emitter electrode of the switch tube is grounded;
when the type of the video signal is the second signal type, the open type pluggable standard interface board pulls the level of the signal input end of the trigger buffer to a low level, the signal output end of the trigger buffer outputs the low level, so that the level of the signal input end of the trigger is pulled to the low level, the first output end of the trigger outputs the low level to control the signal conversion module to perform video signal type conversion, the second output end of the trigger outputs the low level to pull down the base level of the switch tube, and the switch tube is in a cut-off state, so that the channel switching pin is at the high level.
3. The apparatus of claim 2, wherein the signal triggering module is further connected to the signal switching module, and the signal triggering module is further configured to control the signal switching module to switch signal transmission channels, where the signal transmission channels include a first signal transmission channel and a second signal transmission channel;
the first signal transmission channel is used for transmitting the video signal of the first signal type sent by the open pluggable standard interface board;
the second signal transmission channel is used for transmitting the video signal of the first signal type sent by the signal conversion module;
when the signal switching module detects that the channel switching pin is at a low level, the first signal transmission channel is controlled to transmit the video signal;
and when the signal switching module detects that the channel switching pin is at a high level, controlling the second signal transmission channel to transmit the video signal.
4. The apparatus of claim 2, wherein the signal trigger module further comprises a first capacitor, a second capacitor, a third capacitor, a first resistor, a second resistor, a third resistor, a fourth resistor, a fifth resistor, a sixth resistor, a seventh resistor, an eighth resistor, and a ninth resistor;
the node between the open type pluggable standard interface board and the signal input end of the trigger buffer is grounded through the first resistor;
a node between a power supply end of the trigger buffer and the forward direct-current voltage is grounded through the first capacitor;
the signal output end of the trigger buffer is connected with the signal input end of the trigger through the second resistor;
a node between a power supply end of the trigger and the forward direct-current voltage is grounded through the second capacitor;
a node between the second capacitor and a ground terminal is connected with a preset signal terminal of the trigger through the third resistor;
the node between the power supply end of the trigger and the forward direct-current voltage is also grounded through the fourth resistor and the third capacitor in sequence;
a node between the fourth resistor and the third capacitor is connected with a zero clearing end of the trigger;
a second output end of the trigger is connected with a base electrode of the switch tube through the fifth resistor, a collector electrode of the switch tube is connected with a forward direct current voltage through the sixth resistor, a junction point between the collector electrode of the switch tube and the sixth resistor is connected with a channel switching pin of the signal switching module, and an emitter electrode of the switch tube is grounded;
a junction between the fifth resistor and the base electrode of the switching tube is connected with a junction between the emitter electrode and the ground terminal of the switching tube through the seventh resistor;
the first output end of the trigger is grounded through the eighth resistor and the ninth resistor.
5. The apparatus of claim 1, wherein the first signal type is a high definition multimedia interface signal and the second signal type is a display interface signal.
6. The apparatus of claim 1, wherein the open pluggable specification interface board comprises a video signal input interface, a first video signal output terminal, a second video signal output terminal, and a trigger signal output terminal;
the video signal input interface is used for receiving the video signal;
the first video signal output end is connected with the signal switching module, the second video signal output end is connected with the signal switching module through the signal switching module, and the trigger signal output end is respectively connected with the signal switching module and the signal switching module through the signal triggering module.
7. The apparatus of claim 6, wherein the video signal input interface is a smart display module interface.
8. The device as claimed in claim 1, wherein a video signal output interface is disposed on the signal switching module, the video signal output interface is configured to be connected to the external display device, and the video signal output interface is a high-definition multimedia interface.
9. A display device comprising display means and signal conversion means according to any one of claims 1 to 8;
the signal conversion device is connected with the display device through the signal switching module.
10. A display system comprising an open pluggable specification device, a display device and a signal conversion device according to any one of claims 1-8;
the signal conversion device is connected with the open type pluggable standard device through the open type pluggable standard interface board;
the signal conversion device is connected with the display device through the signal switching module.
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| CN202020452399.8U CN212012861U (en) | 2020-04-01 | 2020-04-01 | Signal conversion device, display equipment and display system |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113760378A (en) * | 2021-09-10 | 2021-12-07 | 京东方科技集团股份有限公司 | OPS (optical fiber switch) equipment, starting method thereof and display device |
| WO2023108468A1 (en) * | 2021-12-15 | 2023-06-22 | 京东方科技集团股份有限公司 | Streaming media processing method, system and device |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113760378A (en) * | 2021-09-10 | 2021-12-07 | 京东方科技集团股份有限公司 | OPS (optical fiber switch) equipment, starting method thereof and display device |
| WO2023108468A1 (en) * | 2021-12-15 | 2023-06-22 | 京东方科技集团股份有限公司 | Streaming media processing method, system and device |
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