CN109819193B - Television signal conversion device, television signal conversion method and display system - Google Patents
Television signal conversion device, television signal conversion method and display system Download PDFInfo
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Abstract
The application provides a television signal conversion device, a television signal conversion method and a display system, wherein the television signal conversion device comprises an input end, a synchronous separation circuit, a processing unit and an output end; the input end is connected with the synchronous separation circuit, and the synchronous separation circuit is connected with the processing unit through the first circuit, the second circuit and the third circuit; the processing unit is connected with the output end; the television signal conversion equipment that this application provided converts first television signal into second video signal, for example, converts russian nonstandard video signal into universal format's video signal for general display can show russian nonstandard video signal, does not need dedicated russian display to show, avoids adopting russian display to show russian nonstandard video signal's limitation, has alleviated because russian display's cost is higher, bulky, high power consumption, the commonality is poor and the fault rate is higher, and then leads to adopting russian display to show the more technical problem of limitation when russian nonstandard video signal.
Description
Technical Field
The present disclosure relates to the technical field of television signal processing, and in particular, to a television signal conversion device, a television signal conversion method, and a display system.
Background
In the field of aerospace equipment introduction and precision guided weapons, the display of russian nonstandard video signals plays a very important role. In the prior art, in view of the fact that the television system of the russian nonstandard video signal is not matched with the existing universal display, the russian nonstandard video signal can be displayed only through a specific russian display. The Russian display is designed by a large number of separation components and corresponding circuits, and specifically comprises a video amplifying circuit, a synchronous separation circuit, a line field scanning circuit, a line field deflection coil, a kinescope, an accessory circuit thereof and the like, however, the conventional Russian display mainly depends on import, has higher cost, and meanwhile, the Russian display has large volume, high power consumption, poor universality and higher failure rate, so that the Russian display is more limited in displaying Russian nonstandard video signals.
Disclosure of Invention
In view of this, an object of the present application is to provide a television signal conversion device, a method and a display system, which alleviate the technical problems in the prior art that the russian display has higher cost, large volume, high power consumption, poor generality and higher failure rate, and further causes more limitations when the russian display is used to display the russian nonstandard video signal.
In a first aspect, an embodiment of the present application provides a television signal conversion apparatus, including: the synchronous separation circuit comprises an input end, a synchronous separation circuit, a processing unit and an output end; the input end is connected with the synchronous separation circuit, and the synchronous separation circuit is connected with the processing unit through a first circuit, a second circuit and a third circuit; the processing unit is connected with the output end;
the synchronous separation circuit is used for receiving a first television signal in a first format input by the input end; separating the first television signal into a first field synchronizing signal, a first line synchronizing signal and a first video data signal, and transmitting the first video data signal to the processing unit through the first line, the second line and the third line respectively;
the processing unit is configured to convert the first field synchronization signal, the first line synchronization signal, and the first video data signal into a second field synchronization signal, a second line synchronization signal, and a second video data signal in a second format, convert the second field synchronization signal, the second line synchronization signal, and the second video data signal into a second video signal, and output the second video signal through the output terminal.
In some embodiments of the present application, the apparatus further comprises: a signal conditioning circuit; the signal conditioning circuit is respectively connected with the input end and the synchronous separation circuit;
the signal conditioning circuit is used for receiving the first television signal input by the input end, carrying out current amplification processing on the first television signal, carrying out clutter suppression processing on the first television signal after the current amplification processing, and transmitting the first television signal to the synchronous separation circuit.
In some embodiments of the present application, the apparatus further comprises: a coding unit; the coding unit is respectively connected with the processing unit and the output end;
the encoding unit is configured to receive the second video signal output by the processing unit, convert the second video signal into a second video analog signal, and output the second video analog signal through the output end.
In some embodiments of the present application, the third line includes a signal conversion unit; the signal conversion unit is used for converting the first video data signal from an analog signal to a digital signal and then sending the digital signal to the processing unit.
In some embodiments of the present application, the number of the input ends is at least one;
the device further comprises at least one input control unit, wherein each input control unit is connected with one input end and is used for controlling the opening and closing states of the connected input ends.
In some embodiments of the present application, the apparatus further includes a universal serial bus USB interface, where the USB interface is connected to the processing unit and is configured to perform a program writing operation on the processing unit.
In some embodiments of the present application, the device further includes an indicator light, where the number of indicator lights is at least one, and the at least one indicator light is used to indicate different working states of the device respectively.
In some embodiments of the present application, the processing unit includes a field programmable gate array FPGA device, the FPGA device including a first-in first-out FIFO memory, a second FIFO memory; the second FIFO memory is arranged in parallel with the first FIFO memory;
the first FIFO memory and the second FIFO memory are configured to alternately receive a frame signal of the first field sync signal, a frame signal of the first line sync signal, and a frame signal of the first video data signal, which are output by the sync separation current.
In a second aspect, embodiments of the present application further provide a television signal display system, the system including: the television signal conversion apparatus according to the first aspect, and a display device;
the display device is connected with the television signal conversion equipment and is used for receiving and displaying the second television signal transmitted by the television signal conversion equipment.
In a third aspect, an embodiment of the present application further provides a television signal conversion method, where the method is applied to the television signal conversion apparatus of the first aspect, and the method includes:
receiving a first television signal in a first format input by an input end;
separating the first television signal into a first field sync signal, a first line sync signal, a first video data signal;
the first field synchronizing signal, the first line synchronizing signal and the first video data signal are respectively converted into a second field synchronizing signal, a second line synchronizing signal and a second video data signal in a second format, and the second field synchronizing signal, the second line synchronizing signal and the second video data signal are converted into a second video signal and output through an output end.
The embodiment of the application brings the following beneficial effects: the application provides a television signal conversion device, a television signal conversion method and a display system, wherein the television signal conversion device comprises: the synchronous separation circuit comprises an input end, a synchronous separation circuit, a processing unit and an output end; the input end is connected with the synchronous separation circuit, and the synchronous separation circuit is connected with the processing unit through the first circuit, the second circuit and the third circuit; the processing unit is connected with the output end; the synchronous separation circuit is used for receiving a first television signal in a first format input by an input end; separating the first television signal into a first field synchronizing signal, a first line synchronizing signal and a first video data signal, and transmitting the first video data signal to the processing unit through a first line, a second line and a third line respectively; the processing unit is used for respectively converting the first field synchronizing signal, the first line synchronizing signal and the first video data signal into a second field synchronizing signal, a second line synchronizing signal and a second video data signal in a second format, converting the second field synchronizing signal, the second line synchronizing signal and the second video data signal into a second video signal and outputting the second video signal through the output end. According to the television signal conversion device, a first television signal in a first format is converted into a second video signal in a second format, for example, the first television signal in the first format can be a Russian nonstandard video signal, the second video signal in the second format can be a video signal in a general format, and specifically, the Russian nonstandard video signal is converted into the television signal in the general format, so that a general display can display the Russian nonstandard video signal without adopting a special Russian display for displaying, and the limitation of adopting the Russian display to display the Russian nonstandard video signal is avoided.
Additional features and advantages of the application will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the application. The objectives and other advantages of the application will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the above objects, features and advantages of the present application more comprehensible, preferred embodiments accompanied with figures are described in detail below.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the description of the embodiments or 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 application, and other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a block diagram of a television signal conversion device according to an embodiment of the present application;
fig. 2 is a block diagram of another television signal conversion device according to an embodiment of the present application;
fig. 3 is a block diagram of a portable universal russian nonstandard video signal conversion device according to an embodiment of the present application;
fig. 4 is a block diagram of a television signal display system according to an embodiment of the present application;
fig. 5 is a usage scenario diagram of a television signal display system according to an embodiment of the present application;
fig. 6 is a flowchart of a television signal conversion method according to an embodiment of the present application.
Icon: 101-an input; 102-a synchronous separation circuit; 103-a processing unit; 104-an output; 105-a signal conditioning circuit; 106-a coding unit; 107-a signal conversion unit; 108-an input control unit; a 21-television signal conversion device; 22-display device.
Detailed Description
For the purposes of making the objects, technical solutions and advantages of the embodiments of the present application more apparent, the technical solutions of the present application will be clearly and completely described below with reference to the accompanying drawings, and it is apparent that the described embodiments are some, but not all, embodiments of the present application. All other embodiments, which can be made by one of ordinary skill in the art without undue burden from the present disclosure, are within the scope of the present disclosure.
Currently, in the prior art, in view of the fact that the television system of the russian nonstandard video signal is not matched with the existing general display, the display of the russian nonstandard video signal can be generally realized only through a specific russian display. The Russian display is designed by a large number of separation components and corresponding circuits, and particularly comprises a video amplifying circuit, a synchronous separation circuit, a line field scanning circuit, a line field deflection coil, a kinescope, an accessory circuit thereof and the like, however, the existing Russian display mainly depends on import, and is high in cost, meanwhile, the Russian display is large in size, high in power consumption, poor in universality and high in failure rate, so that the Russian display is more limited when the Russian display is used for displaying Russian non-standard video signals.
For the sake of understanding the present embodiment, a television signal conversion apparatus disclosed in the embodiments of the present application will be described in detail first.
Embodiment one:
the embodiment of the application provides television signal conversion equipment, which comprises the following components: an input terminal 101, a synchronous separation circuit 102, a processing unit 103, and an output terminal 104; the input end 101 is connected with the synchronous separation circuit 102, and the synchronous separation circuit 102 is connected with the processing unit 103 through a first circuit, a second circuit and a third circuit; the processing unit 103 is connected with the output end 104, and as shown in fig. 1, a structural block diagram of the television signal conversion device is shown;
a synchronous separation circuit 102, configured to receive a first television signal in a first format input by the input terminal 101; the first television signal is separated into a first field sync signal, a first line sync signal, and a first video data signal, and transmitted to the processing unit 103 through a first line, a second line, and a third line, respectively.
The first field synchronization signal is transmitted to the processing unit 103 through a first line, the first line synchronization signal is transmitted to the processing unit 103 through a second line, and the first video data signal is transmitted to the processing unit 103 through a third line. For example, the first television signal in the first format may be a russian nonstandard video signal, and the sync separation circuit separates the russian nonstandard video signal into a first field sync signal, a first line sync signal, and a first video data signal.
The processing unit 103 is configured to convert the first field sync signal, the first line sync signal, and the first video data signal into a second field sync signal, a second line sync signal, and a second video data signal in a second format, respectively, convert the second field sync signal, the second line sync signal, and the second video data signal into a second video signal, and output the second video signal through the output terminal 104.
Specifically, the processing unit 103 performs protocol conversion on the first field synchronization signal, the first line synchronization signal, and the first video data signal, generates a second field synchronization signal, a second line synchronization signal, and a second video data signal, and converts the second field synchronization signal, the second line synchronization signal, and the second video data signal to form a set of video signals in a preset format, that is, form the second video signal, where the video signals in the preset format may be set according to a requirement of an output end, for example, the output end 104 may be a video graphics array (Video Graphics Array, VGA) interface end, and the second video signal may be a video signal in a VGA format.
Further, the processing unit 103 may further optimize the received first field synchronization signal, first line synchronization signal, and first video data signal, so as to improve the quality of the first field synchronization signal, first line synchronization signal, and first video data signal, and further improve the quality of the second video signal converted by the television conversion device, so that the image displayed by the second video signal on the external display device is clearer.
According to the television signal conversion device, the processing unit is used for converting the first television signal in the first format into the second video signal in the second format, for example, the first television signal in the first format can be a Russian standard video signal, the second video signal in the second format can be a television signal in the general format, and specifically, the Russian standard video signal is converted into the video signal in the general format, so that the general display can directly display the Russian standard video signal, the special Russian display is not needed to be used for displaying, and the limitation when the Russian display is used for displaying the Russian standard video signal is avoided.
As an alternative embodiment, the television signal conversion apparatus may further include: a signal conditioning circuit 105; the signal conditioning circuit 105 is connected to the input terminal 101 and the synchronous separation circuit 102, respectively.
The signal conditioning circuit 105 is configured to receive the first television signal input by the input terminal 101, perform current amplification processing on the first television signal, perform clutter suppression processing on the first television signal after the current amplification processing, and transmit the first television signal to the synchronous separation circuit 102; clutter and noise interference can be eliminated by performing clutter suppression processing on the first television signal by the signal conditioning circuit 105, and the signal-to-clutter ratio of the first television signal is improved.
As an alternative embodiment, the television signal conversion apparatus may further include: the coding unit 106, the coding unit 106 is connected with the processing unit 103 and the output end 104 respectively;
the encoding unit 106 is configured to receive the second video signal output by the processing unit 103, convert the second video signal into a second video analog signal, and output the second video analog signal through the output end 104, where the second video signal is a digital signal, specifically, the encoding unit may be set according to a requirement of the output end, for example, if the output end 104 is a VGA interface end, and the VGA interface end is configured to receive the analog signal, the encoding unit 106 converts the second video signal output by the processing unit 103 into the second video analog signal, and outputs the second video analog signal through the output end 104, and if the output end 104 is a high-definition multimedia interface (High Definition Multimedia Interface, HDMI) end, and the HDMI interface end is configured to receive the digital signal, then the second video signal output by the processing unit 103 is directly output through the output end 104.
As an alternative embodiment, the third line includes: a signal conversion unit 107, where the signal conversion unit 107 is configured to convert the first video data signal from an analog signal to a digital signal and send the digital signal to the processing unit 103; specifically, the sync separation circuit 102 separates the first television signal into a first field sync signal, a first line sync signal, and a first video data signal, and transmits the first field sync signal, the first line sync signal, and the first video data signal to the processing unit 103 through the first line, the second line, and the third line, where the processing unit 103 is configured to receive and process the digital signal, and if the first field sync signal and the first line sync signal are digital signals, the first video data signal needs to be converted from the analog signal to the digital signal by the signal conversion unit 107, and the converted first video data signal is sent to the processing unit 103.
As an alternative embodiment, the number of inputs is at least one; the television signal conversion apparatus further comprises at least one input control unit 108, each input control unit 108 being connected to one of the input terminals for controlling the open/close state of the connected input terminal 101.
Referring to fig. 2, a block diagram of a television signal conversion apparatus is shown. The input end 101 is connected to a signal source, and receives a first television signal sent by the signal source, specifically, the number of input ends 101 may be multiple, the multiple input ends 101 may be connected to different or the same signal source, and receive the first television signal, when the number of input ends 101 is multiple, the input control unit 108 may control the open-close state of the input ends 101, for example, when the number of input ends 101 is two, that is, the first input end and the second input end, if the first input end is required to receive the first television signal at the first moment, the first input end is controlled to be in an open state by the first input control unit connected to the first input end, the second input control unit connected to the second input end is controlled to make the second input end be in a closed state, and if the second input end is selected to receive the first television signal at the second moment, the first input end is made to be in a closed state by controlling the first input control unit, and the second input control unit is controlled to make the second input end be in an open state.
In the application, the number of the input ends 101 is set to be multiple, a plurality of different first television signals can be received through different input ends 101 and are displayed on the external display device after being converted by the television signal conversion equipment, so that the selection of a plurality of equipment to receive the television signals can be avoided, the cost of the equipment is saved, the operation process of the television signal conversion equipment is simple, compared with the operation process of receiving the television signals by a plurality of equipment, the operation time can be saved, and the working efficiency of the equipment is improved.
As an alternative embodiment, the television signal conversion apparatus may further include: a universal serial bus (Universal Serial Bus, USB) interface, the USB interface being connected to the processing unit for performing a program writing operation to the processing unit.
Specifically, the pre-written program can be input into the processing unit through the USB interface to realize the control of the processing unit, and if the function of the processing unit needs to be modified, the modified program can be input into the processing unit through the modification program to realize the modification of the function of the processing unit, and the modification and update operations of the processing unit are convenient and simple.
As an alternative embodiment, the television signal conversion apparatus may further include: the quantity of the indicator lamps is at least one, and the at least one indicator lamp is respectively used for indicating different working states of the equipment.
For example, the indicator lights may be used to indicate a power supply state, a fault condition, a working state of the processing unit, etc., and the number of specific indicator lights and the corresponding functions may be set according to actual needs.
As an alternative embodiment, the processing unit comprises a Field programmable gate array (Field-Programmable Gate Array, FPGA) device, wherein the FPGA device comprises a first-in first-out (First Input First Output, FIFO) memory, a second FIFO memory; the second FIFO memory is arranged in parallel with the first FIFO memory;
the first FIFO memory and the second FIFO memory are used for receiving the frame signal of the first field synchronizing signal, the frame signal of the first line synchronizing signal and the frame signal of the first video data signal output by the synchronous separating circuit in turn.
In this embodiment of the present application, when the first FIFO memory is in a write data state, the second FIFO memory is in a read data state, and the first FIFO memory is configured to receive the first frame signal of the first field synchronization signal, the first frame signal of the first line synchronization signal, and the first frame signal of the first video data signal output by the synchronization separation circuit, and perform protocol conversion on the received first frame signal of the first field synchronization signal, the first frame signal of the first line synchronization signal, and the first frame signal of the first video data signal, generate and store the first frame signal of the second field synchronization signal, the first frame signal of the second line synchronization signal, and the first frame signal of the second video data signal.
After the protocol conversion of the first frame signal of the first field synchronizing signal, the first frame signal of the first line synchronizing signal and the first frame signal of the first video data signal is completed, the processing unit starts the switching signal, so that the first FIFO memory is in a read data state, and the second FIFO memory is in a write data state.
The above process is repeated until the first FIFO memory and the second FIFO memory receive and perform protocol conversion on all of the first line signal of the first field synchronizing signal, the first line signal of the first line synchronizing signal, and the first line signal of the first video data signal, and generate the first line signal of the second field synchronizing signal, the first line signal of the second line synchronizing signal, and the first line signal of the second video data signal, and the first FIFO memory and the second FIFO memory output the saved first line signal of the second field synchronizing signal, the first line signal of the second line synchronizing signal, and the first line signal of the second video data signal through the output terminal.
After the first line signal of the first field synchronizing signal, the first line signal of the first line synchronizing signal and the first line signal of the first video data signal are output through the output end, the first FIFO memory and the second FIFO memory receive and process the second line signal of the first field synchronizing signal, the second line signal of the first line synchronizing signal and the second line signal of the first video data signal through the above steps in a protocol conversion manner, generate the second line signal of the second field synchronizing signal, the second line signal of the second line synchronizing signal and the second line signal of the second video data signal, and output through the output end until the first field synchronizing signal, the first line synchronizing signal and the first video data signal are all converted into the second field synchronizing signal, the second line synchronizing signal and the second video data signal, and output through the output end.
The first FIFO memory and the second FIFO memory arranged on the FPGA device play a role in buffering in the transmission process of the first television signals, so that the first television signals are not transmitted to the FPGA device in a large amount, the processing efficiency of the FPGA device is improved, the efficiency of receiving the second television signals at the output end can be improved, the transmission of the second television signals to the output end in a large amount is avoided, and the output end is not timely in receiving the second television signals, so that the second television signal data are lost.
As an alternative embodiment, the television signal conversion apparatus may further include: the power interface is used for supplying power to equipment, and specifically, the power interface can select a 12V pinhole to supply power, wherein the model of the power interface can be set according to actual needs.
As an alternative embodiment, the television signal conversion apparatus may further include: a heat radiation hole; the heat dissipation holes are used for realizing heat dissipation of the equipment in the operation process of the equipment, and damage to the equipment caused by overhigh temperature of the equipment in the operation process is avoided.
For the convenience of understanding the television signal conversion apparatus provided in the present application, the internal structure of the television signal conversion apparatus is exemplarily described below, and referring to fig. 3, a structure diagram of a portable general russian non-standard video signal conversion apparatus is shown, where the portable general russian non-standard video signal conversion apparatus may have a length of 50 mm, a width of 30 mm, and a height of 100 mm, and the portable general russian non-standard video signal conversion apparatus has a small volume and is convenient to carry. Specifically, the length, width and height of the portable universal russian nonstandard video signal conversion device can be set according to actual needs. The SMA1 and the SMA2 are two input ends, the corresponding circuits of (1), (2) and (3) are the first circuit, the second circuit and the third circuit, the A/D is a signal conversion unit, the FPGA processing unit is a processing unit, the VGA is an output end, the B1 is an input control unit, and the L1, the L2 and the L3 are three indicator lamps.
Specifically, SMA1 and SMA2 receive the Russian nonstandard video signals output by the signal source, and transmit the received Russian nonstandard video signals to the signal conditioning circuit, the signal conditioning circuit performs clutter suppression processing on the Russian nonstandard video signals, and transmits the processed Russian nonstandard video signals to the synchronous separation circuit, the synchronous separation circuit separates the Russian signals into a first field synchronous signal, a first line synchronous signal and a first video data signal, and transmits the first field synchronous signal to the FPGA processing unit through a first line, the first line synchronous signal to the FPGA processing unit through a second line, the first video data signal is transmitted to the FPGA processing unit through a third line and the A/D unit, the A/D unit converts the first video data signal from an analog signal to a digital signal and transmits the digital signal to the FPGA processing unit, the FPGA processing unit respectively converts the first field synchronous signal, the first row synchronous signal and the first video data signal into a second field synchronous signal, a second row synchronous signal and a second video data signal with a second format, converts the second field synchronous signal, the second row synchronous signal and the second video data signal into second video signals and outputs the second video signals to the coding unit, the coding unit receives the second video signals output by the FPGA processing unit, converts the second video signals into second video analog signals, and outputs the second video analog signals through a VGA interface, B1 is connected with SMA1 and SMA2 to control the opening and closing states of SMA1 and SMA2, a power port is used for being connected with an external power supply to supply power for the portable universal rushing display equipment, L1, L2 and L3 are indicator lamps used for indicating preset functions, the preset functions can be the power supply state, fault state, the working state of the processing unit and the like of the equipment, the USB interface is used for performing program writing operation on the processing unit and realizing modification and updating of programs in the processing unit.
Embodiment two:
on the basis of the above embodiment, the present embodiment further provides a television signal display system, which includes the television signal conversion device 21 according to the first embodiment, and further includes a display device 22, as shown in fig. 4, which is a block diagram of a television signal display system;
the display device 22 is connected to the television signal conversion apparatus 21, and the display device 22 is configured to receive and display the second video signal transmitted by the television signal conversion apparatus 21, and fig. 5 is a usage scenario diagram of a television signal display system.
In the television signal display system provided in this embodiment of the present application, the television signal conversion device 21 converts the received first television signal into the second video signal and outputs the second video signal, for example, converts the russian standard video signal into a video signal in a common format, such as a VGA signal or an HDMI signal, and sends the second video signal to the display device 22, so that the display of the second video signal is implemented on the display device 22.
Embodiment III:
on the basis of the foregoing embodiments, the embodiments of the present application further provide a television signal conversion method, which is applied to the television signal conversion apparatus described in the first embodiment, as shown in fig. 6, where a flowchart of a television signal conversion method is shown, and the method includes:
step S501, receiving a first television signal in a first format input by an input end;
step S502, separating the first television signal into a first field synchronizing signal, a first line synchronizing signal and a first video data signal;
in step S503, the first field sync signal, the first line sync signal, and the first video data signal are respectively converted into a second field sync signal, a second line sync signal, and a second video data signal in a second format, and the second field sync signal, the second line sync signal, and the second video data signal are converted into a second video signal and output through the output terminal.
According to the television signal conversion method, the first television signal can be converted into the second video signal and output through the output end, for example, the Russian nonstandard video signal is converted into the video signal in the universal format, so that the universal display can display the Russian nonstandard video signal, a special Russian display is not needed for displaying, the limitation of the Russian display in displaying the Russian nonstandard video signal is avoided, the technical problems in the prior art that the Russian display is high in cost, large in size, high in power consumption, poor in universality and high in failure rate are solved, and the Russian display is adopted to display the Russian nonstandard video signal.
In addition, in the description of the embodiments of the present application, unless explicitly stated and limited otherwise, 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; can be directly connected or indirectly connected through an intermediate medium, and can be communication between two elements. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art in a specific context.
In the description of the present application, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of description of the present application and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present application. 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.
The computer program product for performing the television signal conversion method according to the embodiment of the present application includes a computer readable storage medium storing a non-volatile program code executable by a processor, where the program code includes instructions for performing the method described in the foregoing method embodiment, and specific implementation may refer to the method embodiment and will not be described herein.
It will be clear to those skilled in the art that, for convenience and brevity of description, specific working procedures of the above-described systems, apparatuses and units may refer to corresponding procedures in the foregoing method embodiments, and are not repeated herein.
In the several embodiments provided in this application, it should be understood that the disclosed systems, devices, and methods may be implemented in other manners. The above-described apparatus embodiments are merely illustrative, for example, the division of the units is merely a logical function division, and there may be other manners of division in actual implementation, and for example, multiple units or components may be combined or integrated into another system, or some features may be omitted, or not performed. Alternatively, the coupling or direct coupling or communication connection shown or discussed with each other may be through some communication interface, device or unit indirect coupling or communication connection, which may be in electrical, mechanical or other form.
The units described as separate units may or may not be physically separate, and units shown as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the units may be selected according to actual needs to achieve the purpose of the solution of this embodiment.
In addition, each functional unit in each embodiment of the present application may be integrated in one processing unit, or each unit may exist alone physically, or two or more units may be integrated in one unit.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a non-volatile computer readable storage medium executable by a processor. Based on such understanding, the technical solution of the present application may be embodied essentially or in a part contributing to the prior art or in a part of the technical solution, in the form of a software product stored in a storage medium, including several instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to perform all or part of the steps of the methods described in the embodiments of the present application. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a random access Memory (RAM, random Access Memory), a magnetic disk, or an optical disk, or other various media capable of storing program codes.
Finally, it should be noted that: the foregoing examples are merely specific embodiments of the present application, and are not intended to limit the scope of the present application, but the present application is not limited thereto, and those skilled in the art will appreciate that while the foregoing examples are described in detail, the present application is not limited thereto. Any person skilled in the art may modify or easily conceive of the technical solution described in the foregoing embodiments, or make equivalent substitutions for some of the technical features within the technical scope of the disclosure of the present application; such modifications, changes or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present application, and are intended to be included in the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (9)
1. A television signal conversion apparatus, the apparatus comprising: the synchronous separation circuit comprises an input end, a synchronous separation circuit, a processing unit and an output end; the input end is connected with the synchronous separation circuit, and the synchronous separation circuit is connected with the processing unit through a first circuit, a second circuit and a third circuit; the processing unit is connected with the output end;
the synchronous separation circuit is used for receiving a first television signal in a first format input by the input end; separating the first television signal into a first field synchronizing signal, a first line synchronizing signal and a first video data signal, and transmitting the first video data signal to the processing unit through the first line, the second line and the third line respectively;
the processing unit is configured to convert the first field synchronization signal, the first line synchronization signal, and the first video data signal into a second field synchronization signal, a second line synchronization signal, and a second video data signal in a second format, respectively, convert the second field synchronization signal, the second line synchronization signal, and the second video data signal into a second video signal, and output the second video signal through the output terminal, where the video signal in a preset format is set according to a requirement of the output terminal;
the processing unit comprises a Field Programmable Gate Array (FPGA) device, and the FPGA device comprises a first-in first-out FIFO memory and a second FIFO memory; the second FIFO memory is arranged in parallel with the first FIFO memory;
the first FIFO memory and the second FIFO memory are configured to receive, in turn, the frame signal of the first field synchronizing signal, the frame signal of the first line synchronizing signal, and the frame signal of the first video data signal output by the synchronization separation circuit.
2. The apparatus of claim 1, wherein the apparatus further comprises: a signal conditioning circuit; the signal conditioning circuit is respectively connected with the input end and the synchronous separation circuit;
the signal conditioning circuit is used for receiving the first television signal input by the input end, carrying out current amplification processing on the first television signal, carrying out clutter suppression processing on the first television signal after the current amplification processing, and transmitting the first television signal to the synchronous separation circuit.
3. The apparatus according to claim 1 or 2, characterized in that the apparatus further comprises: a coding unit; the coding unit is respectively connected with the processing unit and the output end;
the encoding unit is configured to receive the second video signal output by the processing unit, convert the second video signal into a second video analog signal, and output the second video analog signal through the output end.
4. The apparatus of claim 1, the third line comprising a signal conversion unit;
the signal conversion unit is used for converting the first video data signal from an analog signal to a digital signal and then sending the digital signal to the processing unit.
5. The apparatus of claim 1, wherein the number of inputs is at least one;
the device further comprises at least one input control unit, wherein each input control unit is connected with one input end and is used for controlling the opening and closing states of the connected input ends.
6. The device of claim 1, further comprising a universal serial bus, USB, interface coupled to the processing unit for performing program writing operations to the processing unit.
7. The device of claim 1, further comprising at least one indicator light, the at least one indicator light being for indicating different operating states of the device, respectively.
8. A television signal display system, the system comprising: the television signal conversion apparatus of any one of claims 1-7, and a display device;
the display device is connected with the television signal conversion equipment and is used for receiving and displaying the second television signal transmitted by the television signal conversion equipment.
9. A television signal conversion method, wherein the method is applied to the television signal conversion apparatus of any one of claims 1 to 7, the method comprising:
receiving a first television signal in a first format input by an input end;
separating the first television signal into a first field sync signal, a first line sync signal, a first video data signal;
the first field synchronizing signal, the first line synchronizing signal and the first video data signal are respectively converted into a second field synchronizing signal, a second line synchronizing signal and a second video data signal in a second format, and the second field synchronizing signal, the second line synchronizing signal and the second video data signal are converted into a second video signal and output through an output end.
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