CN212969784U - Signal conversion device and display - Google Patents
Signal conversion device and display Download PDFInfo
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- CN212969784U CN212969784U CN202022424176.3U CN202022424176U CN212969784U CN 212969784 U CN212969784 U CN 212969784U CN 202022424176 U CN202022424176 U CN 202022424176U CN 212969784 U CN212969784 U CN 212969784U
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Abstract
The utility model discloses a signal conversion device and display, signal conversion device are suitable for the setting in the display screen, include: the image processing circuit, the first signal distribution circuit, the driving circuit and the first signal conversion circuit; the image processing circuit is suitable for receiving an externally input video signal and outputting a first video signal; the first signal distribution circuit is suitable for receiving the first video signals output by the image processing circuit in a distributed mode so as to output two paths of same first video signals; the driving circuit is suitable for receiving one path of first video signals output by the first signal distribution circuit and converting the first video signals into driving signals of the display screen; the first signal conversion circuit is suitable for receiving the other path of the first video signal output by the first signal distribution circuit, and converting the first video signal into a second video signal for output. The utility model discloses not only can drive the display screen at its place and show, can also export and this display screen display information synchronous video signal.
Description
Technical Field
The utility model relates to an image display equipment field, concretely relates to signal conversion equipment and display.
Background
Displays (displays) are also commonly referred to as monitors. The display is an I/O device belonging to a computer, namely an input/output device. The electronic document display tool is a display tool which displays a certain electronic document on a screen through a specific transmission device and reflects the electronic document to human eyes. It can be divided into various types such as CRT display, LCD display, and LED display. The conventional display generally has a plurality of Video input interfaces such as a Video Graphics Array (VGA) Interface or a Digital Video Interface (DVI) Interface, and can perform image display and adjust brightness and contrast of a displayed image.
However, most of the existing displays can only recognize the video signal inputted from the outside and display the corresponding image, but cannot synchronously output the current display signal, so how to synchronize the screen information to other displays or receiving devices through different interfaces becomes an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
In view of this, the utility model provides a signal conversion device and display to solve the technical problem that can't export the screen information synchronization of display among the prior art.
The embodiment of the utility model provides a first aspect provides a signal conversion device, signal conversion device sets up in the display screen, include: the image processing circuit comprises an image processing circuit, a first signal distribution circuit, a driving circuit and a first signal conversion circuit, wherein the output end of the image processing circuit is connected with the first signal distribution circuit, the output end of the first distribution circuit is connected with the driving circuit, and the output end of the driving circuit is connected with the first signal conversion circuit; the image processing circuit is suitable for receiving an externally input video signal, processing the externally input video signal and outputting a first video signal; the first signal distribution circuit is suitable for receiving and distributing the first video signals output by the image processing circuit so as to output two paths of same first video signals; the driving circuit is suitable for receiving one path of first video signals output by the first signal distribution circuit and converting the first video signals into driving signals of a display screen; the first signal conversion circuit is suitable for receiving the other path of first video signal output by the first signal distribution circuit, and converting the first video signal into a second video signal for output.
Optionally, the signal conversion apparatus further includes: the second signal distribution circuit is connected with the output end of the first signal conversion circuit, and the output end of the second signal distribution circuit is connected with the second signal conversion circuit; the second signal distribution circuit is suitable for receiving the second video signal output by the first signal conversion circuit, distributing the second video signal and outputting two paths of same second video signals; the second signal conversion circuit is suitable for receiving one path of second video signals output by the second signal distribution circuit, converting the second video signals into third video signals and outputting the third video signals.
Optionally, the signal conversion apparatus further includes: the second video signal output interface is connected with the output end of the second signal distribution circuit, and the third video signal output interface is connected with the output end of the second signal conversion circuit; the second video signal output interface is suitable for receiving the other path of second video signal output by the second signal distribution circuit and outputting the second video signal to the signal conversion device; the third video signal output interface is adapted to receive the third video signal output by the second signal conversion circuit and output the third video signal to the signal conversion device.
Optionally, the signal conversion apparatus further includes: and the storage circuit is connected with the image processing circuit and is used for storing temporary data.
Optionally, the image processing circuit comprises: and the display screen driver receives an externally input video signal, processes the externally input video signal and outputs a first video signal.
Optionally, the first signal distribution circuit comprises: the field programmable gate array receives and distributes the first video signals output by the image processing circuit to output two paths of same first video signals; the drive signal of display screen is LVDS signal, drive circuit includes: and the LVDS signal converter receives one path of first video signal output by the first signal distribution circuit and converts the first video signal into a driving signal of the display screen.
Optionally, the first signal conversion circuit includes: a digital-to-analog converter; the first video signal is an RGB video signal, and the second video signal is a VGA video signal; the first signal conversion circuit is a chip for converting RGB signals into VGA signals.
Optionally, the second video signal is a VGA video signal, and the third video signal is a DRGB video signal; the second signal conversion circuit is a chip for converting VGA signals into DRGB signals.
Optionally, the second signal distribution circuit comprises: the dual-output operation and amplifier receives the second video signals output by the first signal conversion circuit, distributes the second video signals and outputs two paths of same second video signals; the second signal conversion circuit includes: and the three-way differential driver receives one path of second video signal output by the second signal distribution circuit, converts the second video signal into a third video signal and outputs the third video signal.
The embodiment of the utility model provides a second aspect provides a display, the display includes: the embodiment of the utility model provides a first aspect and first aspect any one the signal conversion device; the display screen is suitable for receiving the driving signal output by the signal conversion device and displaying images according to the driving signal; the display is suitable for driving an external display device to display images according to the video signals output by the signal conversion device.
The utility model discloses technical scheme has following advantage:
the utility model discloses signal conversion equipment that technical scheme provided can obtain two way first video signal with the video signal conversion of external input through image processing circuit, first signal distribution circuit, sets up drive circuit and can convert one of them way first video signal into drive signal, can drive corresponding display screen and show; meanwhile, the first signal conversion circuit can convert the other path of first video signal into a video signal synchronous with display information of the display screen, and can be used for driving other display screens to display. Therefore, the embodiment of the utility model provides a signal conversion device, through the setting of above-mentioned circuit, not only can drive the display screen at its place and show, can also export the video signal synchronous with this display screen display information to can make outside display device show with the same display information of this display screen.
The utility model provides a display through set up signal conversion equipment wherein, not only makes this display show under outside video signal's drive, can also export simultaneously with the synchronous signal of this display screen, and the signal of this output can transmit its demonstration information of showing with this display screen synchronization of drive to outside display device.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the embodiments or the technical solutions in the prior art will be briefly described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a block diagram of a signal conversion device according to an embodiment of the present invention;
fig. 2 is a block diagram of a signal conversion device according to another embodiment of the present invention;
fig. 3 is a block diagram of a display according to an embodiment of the present invention.
Detailed Description
As described in the background art, the existing display device can generally receive various video signals inputted from the outside and perform image display according to the received video signals; however, in some fields, it may be necessary to output a signal synchronized with a display screen signal for display on other displays. The existing display cannot realize the function. Therefore, a device capable of synchronously outputting display screen signals is needed.
Based on this, the embodiment of the utility model provides a first aspect provides a signal conversion device, signal conversion device sets up in the display screen, include: the video signal processing circuit comprises an image processing circuit, a first signal distribution circuit, a driving circuit and a first signal conversion circuit, wherein the output end of the image processing circuit is connected with the first signal distribution circuit, the output end of the first signal distribution circuit is connected with the driving circuit, the output end of the driving circuit is connected with the first signal conversion circuit, the image processing circuit is suitable for receiving an externally input video signal, processing the externally input video signal and outputting the first video signal; the first signal distribution circuit is suitable for receiving and distributing the first video signals output by the image processing circuit so as to output two paths of same first video signals; the driving circuit is suitable for receiving one path of first video signals output by the first signal distribution circuit and converting the first video signals into driving signals of a display screen; the first signal conversion circuit is suitable for receiving the other path of first video signal output by the first signal distribution circuit, and converting the first video signal into a second video signal for output.
The technical solution of the present invention will be described clearly and completely with reference to the accompanying drawings, and obviously, the described embodiments are some, but not all embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
In the description of the present invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplification of description, but do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.
In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; the two elements may be directly connected or indirectly connected through an intermediate medium, or may be communicated with each other inside the two elements, or may be wirelessly connected or wired connected. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
An embodiment of the utility model provides a signal conversion device, as shown in fig. 1, this signal conversion device sets up in the display screen, include: an image processing circuit 10, a first signal distribution circuit 20, a drive circuit 30, and a first signal conversion circuit 40; the output end of the image processing circuit 10 is connected to the first signal distribution circuit 20, the output end of the first signal distribution circuit 20 is connected to the driving circuit 30, the output end of the driving circuit 30 is connected to the first signal conversion circuit 40, the image processing circuit 10 is suitable for receiving an externally input video signal, and the externally input video signal is processed and then output a first video signal; the first signal distribution circuit 20 is adapted to receive and distribute the first video signal output by the image processing circuit 10 to output two paths of the same first video signal; the driving circuit 30 is adapted to receive a path of the first video signal output by the first signal distributing circuit 20, and convert the first video signal into a driving signal for the display screen; the first signal conversion circuit 40 is adapted to receive another path of the first video signal output by the first signal distribution circuit 20, and convert the first video signal into a second video signal for output.
In a specific embodiment, the driving signal of the display screen is a Low Voltage Differential Signaling (LVDS), i.e. an LVDS signal.
The display screen comprises a liquid crystal display screen, an OLED display screen or other types of display screens.
The embodiment of the utility model provides a signal conversion device can obtain multichannel first video signal with the video signal conversion of external input through image processing circuit 10, first signal distribution circuit 20, sets up drive circuit 30 and can convert one of them first video signal into drive signal, can drive corresponding display screen and show; meanwhile, the first signal conversion circuit 40 can convert another path of first video signal into a video signal synchronous with display information of the display screen, and can be used for driving other display screens to display. In addition, the time difference generated when each circuit processes signals is very small, and the time difference cannot be recognized by human eyes. Therefore, the embodiment of the utility model provides a signal conversion device not only can drive the display screen at its place and show, can also export the video signal synchronous with this display screen display information to can make other displays show with the same display information of this display screen, perhaps handle in exporting this synchronous video signal to external display device like signal conversion or processing equipment.
In one embodiment, as shown in fig. 2, the signal conversion apparatus further includes: the second signal distribution circuit 50 is connected with the output end of the first signal conversion circuit 40, the output end of the second signal distribution circuit 50 is connected with the second signal conversion circuit 60, the second signal distribution circuit 50 is suitable for receiving the second video signal output by the first signal conversion circuit 40, distributing the second video signal and outputting two paths of same second video signals; the second signal conversion circuit 60 is adapted to receive a path of second video signal output by the second signal distribution circuit 50, and convert the second video signal into a third video signal for output.
The embodiment of the utility model provides a signal conversion device through set up second signal distribution circuit 50 and second signal conversion circuit 60 after first signal conversion circuit 40, can distribute the second video signal and obtain multichannel second video signal, simultaneously, can convert second video signal wherein of the same kind into third video signal. Therefore, the signal conversion device not only can output the second video signal synchronous with the display information of the display screen, but also can output the third video signal synchronous with the display information of the display screen, namely, the signal conversion device can output video signals of various different types, and meets the requirements of video interfaces of different display screens.
In one embodiment, the signal conversion apparatus further comprises: a second video signal output interface (not shown) and a third video signal output interface (not shown), wherein the second video signal output interface is connected with the output end of the second signal distribution circuit 50, the third video signal output interface is connected with the output end of the second signal conversion circuit 60, and the second video signal output interface is adapted to receive another path of second video signal output by the second signal distribution circuit 50 and output the second video signal to the signal conversion device; the third video signal output interface is adapted to receive the third video signal output by the second signal conversion circuit 60 and output the third video signal to the signal conversion device.
Specifically, two signal output interfaces may be provided in the signal conversion apparatus to realize output of different video signals.
In one embodiment, the image processing circuit 10 includes: the display screen driver, specifically, when the display screen on which the signal conversion device is located is a liquid crystal display screen, the display screen may be a liquid crystal driver, for example, may be a GM chip series, GM5120, GM5115, GM5126, or an RTD series, such as RTD2523B/2513B/2O23B/2O13B, and when the display screen on which the signal conversion device is located is an LED display screen, the display screen may be an LED driver, for example, a TB series, TB62705, TB62706, TB62725, TB62726, TB62718, TB62719, TB62727, or the like. In a specific embodiment, the display screen can select an RTD2674 chip as a driver to convert an externally input VGA video signal or DVI video signal into an RGB video signal; in addition, when the video signal input from the outside is a touch signal, the chip can be used for processing the touch signal, so that the human-computer interaction function is realized. In one embodiment, a memory circuit may be further connected to the image processing circuit 10 for storing temporary Data, and the memory circuit may include a Double Data Rate (DDR). When a plurality of frames of images are externally input, the plurality of frames of images may be stored in a storage circuit and processed by an image processing circuit, respectively.
In one embodiment, the first signal distribution circuit may implement the distribution function using a video distributor, and in one embodiment, the first signal distribution circuit 20 includes: the FPGA chip is a type of EP4CE6E22I7 chip, and has low power consumption, so that the cost of the signal conversion device can be reduced, and the chip can distribute the RGB video signals obtained by the image processing circuit 10 to obtain two paths of RGB video signals. In addition, the first signal distribution circuit 20 may also select other chips so that a plurality of RGB video signals can be distributed.
In one embodiment, the driving circuit 30 may include: the LVDS signal converter is configured to convert the RGB video signals output by the first signal distribution circuit 20 into LVDS signals to drive the display panel to display, where a corresponding chip may be selected according to a BIT width BIT and a number of channels of the required LVDS signals, for example, to determine whether the channel is a single channel or a dual channel. Specifically, a DS90C series chip may be selected, for example, a DS90C387 may be selected corresponding to a dual channel 8bit LVDS. In one embodiment, the LVDS signal converter may be a THC63LVD827 chip, which can support a 1080p/1920 × 1440 resolution, and the package size of the chip is small, the power consumption is low, the size of the signal conversion device can be reduced, and the cost can be further reduced.
In an embodiment, the first signal conversion circuit 40 can convert the RGB video signals outputted from the first signal distribution circuit 20 to obtain a VGA video signal. The first signal conversion circuit 40 is a chip for converting RGB signals into VGA signals, the first video signal is an RGB video signal, and the second video signal is a VGA video signal. Since VGA is analog signal and RGB is digital signal, the first signal conversion circuit 40 can use digital-analog converter to convert RGB signal to VGA signal. In one embodiment, the digital-to-analog converter may be an ADV7123 chip.
In one embodiment, the second signal distribution circuit 50 includes: and the dual-path output operational amplifier can select a chip with a MAX4382 model, and divides the VGA video signal output by the first signal conversion circuit 40 into two paths of same VGA video signals. In addition, the second signal distribution circuit can also select other chips, so that a plurality of VGA video signals can be distributed. The second signal conversion circuit 60 may select a chip capable of converting VGA signals into DRGB signals, and in a specific embodiment, selects a three-way differential driver, which may select a chip of AD8148 type, and the second signal conversion circuit 60 may convert one of VGA video signals output by the second signal distribution circuit 50 into DRGB signals for output. The second signal conversion circuit 60 is a chip for converting VGA signals into DRGB signals, the second video signals are VGA video signals, and the third video signals are DRGB video signals.
The embodiment of the utility model provides a signal conversion device provides corresponding chip respectively to image processing circuit 10, first signal distribution circuit 20, drive circuit 30, first signal conversion circuit 40, second signal distribution circuit 50 and second signal conversion circuit 60 and makes it realize corresponding function to make this signal conversion device finally realize with the synchronous signal output of display screen signal.
The embodiment of the utility model provides a still provide a display, the display includes: the display screen is suitable for receiving the driving signal output by the signal conversion device and displaying images according to the driving signal; the display is suitable for driving the external display device to display images according to the video signals output by the signal conversion device.
The display may be a liquid crystal display, which may be used in military applications, and may be a reinforced liquid crystal display, for example. The display may also be an OLED display screen or other type of display screen.
The embodiment of the utility model provides a display, through set up signal conversion equipment wherein, not only can show under this display outside video signal's drive, can also export simultaneously with the synchronous signal of this display screen, the signal of this output can be transmitted to other displays or receiving arrangement on its demonstration of drive and the synchronous display information of this display screen, has compensatied the defect of current display.
In one embodiment, as shown in fig. 3, the display includes a power network, which receives an externally inputted 220V commercial power and converts it into a driving voltage for the display screen and the signal conversion device, for example, a voltage of 12V acceptable for the display screen of a typical LCD). When a DVI video signal, a VGA video signal, or a touch signal is externally input, the image processing circuit 10 performs image quality processing, converts the externally input VGA video signal or DVI video signal into an RGB video signal, and processes the touch signal; the image processing circuit 10 is also connected to a memory circuit for temporary data storage. The first signal distribution circuit divides one RGB video into two identical RGB signals, which are input to the driving circuit 30 and the first signal conversion circuit 40, respectively. The driving circuit 30 converts the 1 channel RGB signals into LVDS signals, and transmits the LVDS signals to the LCD display to drive the LCD display to display. The first signal conversion circuit 40 converts the other RGB signal into a VGA signal, and inputs the VGA signal to the second signal distribution circuit 50. The second signal distribution circuit 50 divides the VGA signals into two paths of identical VGA signals, one of which is directly output externally, the other of which is input into the second signal conversion circuit 60, and the second signal conversion circuit 60 converts the VGA signals into DRGB signals for output externally.
Although the present invention has been described in detail with respect to the exemplary embodiments and the advantages thereof, those skilled in the art will appreciate that various changes, substitutions and alterations can be made to the embodiments without departing from the spirit of the invention and the scope of the invention as defined by the appended claims. For other examples, one of ordinary skill in the art will readily appreciate that the order of the process steps may be varied while maintaining the scope of the present invention.
Moreover, the scope of the present application is not intended to be limited to the particular embodiments of the process, machine, manufacture, composition of matter, means, methods and steps described in the specification. As one of ordinary skill in the art will readily appreciate from the disclosure of the present invention, processes, machines, manufacture, compositions of matter, means, methods, or steps, presently existing or later to be developed, that perform substantially the same function or achieve substantially the same result as the corresponding embodiments described herein may be utilized according to the present invention. Accordingly, the appended claims are intended to include within their scope such processes, machines, manufacture, compositions of matter, means, methods, or steps.
Claims (10)
1. A signal conversion device, the signal conversion device being provided in a display screen, comprising: the image processing circuit comprises an image processing circuit, a first signal distribution circuit, a driving circuit and a first signal conversion circuit, wherein the output end of the image processing circuit is connected with the first signal distribution circuit, the output end of the first signal distribution circuit is connected with the driving circuit, and the output end of the driving circuit is connected with the first signal conversion circuit;
the image processing circuit is suitable for receiving an externally input video signal, processing the externally input video signal and outputting a first video signal;
the first signal distribution circuit is suitable for receiving and distributing the first video signals output by the image processing circuit so as to output two paths of same first video signals;
the driving circuit is suitable for receiving one path of first video signals output by the first signal distribution circuit and converting the first video signals into driving signals of a display screen;
the first signal conversion circuit is suitable for receiving the other path of first video signal output by the first signal distribution circuit, and converting the first video signal into a second video signal for output.
2. The signal conversion apparatus of claim 1, further comprising: the second signal distribution circuit is connected with the output end of the first signal conversion circuit, and the output end of the second signal distribution circuit is connected with the second signal conversion circuit;
the second signal distribution circuit is suitable for receiving the second video signal output by the first signal conversion circuit, distributing the second video signal and outputting two paths of same second video signals;
the second signal conversion circuit is suitable for receiving one path of second video signals output by the second signal distribution circuit, converting the second video signals into third video signals and outputting the third video signals.
3. The signal conversion apparatus of claim 2, further comprising: the second video signal output interface is connected with the output end of the second signal distribution circuit, and the third video signal output interface is connected with the output end of the second signal conversion circuit;
the second video signal output interface is suitable for receiving the other path of second video signal output by the second signal distribution circuit and outputting the second video signal to the signal conversion device;
the third video signal output interface is adapted to receive the third video signal output by the second signal conversion circuit and output the third video signal to the signal conversion device.
4. The signal conversion apparatus of claim 1, further comprising: and the storage circuit is connected with the image processing circuit and is used for storing temporary data.
5. The signal conversion apparatus according to claim 1, wherein the image processing circuit comprises: and the display screen driver receives an externally input video signal, processes the externally input video signal and outputs a first video signal.
6. The signal conversion apparatus of claim 1, wherein the first signal distribution circuit comprises: the field programmable gate array receives and distributes the first video signals output by the image processing circuit to output two paths of same first video signals;
the drive signal of display screen is LVDS signal, drive circuit includes: and the LVDS signal converter receives one path of first video signal output by the first signal distribution circuit and converts the first video signal into a driving signal of the display screen.
7. The signal conversion apparatus of claim 1, wherein the first signal conversion circuit comprises: a digital-to-analog converter;
the first video signal is an RGB video signal, and the second video signal is a VGA video signal; the first signal conversion circuit is a chip for converting RGB signals into VGA signals.
8. The signal conversion apparatus according to claim 2, wherein the second video signal is a VGA video signal, and the third video signal is a DRGB video signal; the second signal conversion circuit is a chip for converting VGA signals into DRGB signals.
9. The signal conversion apparatus of claim 2, wherein the second signal distribution circuit comprises: the dual-output operation and amplifier receives the second video signals output by the first signal conversion circuit, distributes the second video signals and outputs two paths of same second video signals; the second signal conversion circuit includes: and the three-way differential driver receives one path of second video signal output by the second signal distribution circuit, converts the second video signal into a third video signal and outputs the third video signal.
10. A display, characterized in that the display comprises:
the signal conversion device of any one of claims 1-9;
the display screen is suitable for receiving the driving signal output by the signal conversion device and displaying images according to the driving signal;
the display is suitable for driving an external display device to display images according to the video signals output by the signal conversion device.
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| CN202022424176.3U CN212969784U (en) | 2020-10-27 | 2020-10-27 | Signal conversion device and display |
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| CN202022424176.3U CN212969784U (en) | 2020-10-27 | 2020-10-27 | Signal conversion device and display |
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