CN206251099U - A kind of signal transmitting equipment, signal receiver and video signal transmission system - Google Patents
A kind of signal transmitting equipment, signal receiver and video signal transmission system Download PDFInfo
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Abstract
The utility model embodiment discloses a kind of signal transmitting equipment, signal receiver and video signal transmission system, and signal transmitting equipment includes：First communication interface, main signal transmitter module, standby signal emission module, the second communication interface and third communication interface；First communication interface connects the input of main signal transmitter module and the input of standby signal emission module respectively, and the output end of main signal transmitter module connects the second communication interface, the output end connection third communication interface of standby signal emission module；First communication interface is used to receive the vision signal of video source transmission；It is main transmission signal that main signal transmitter module is used to change vision signal, and is sent to signal receiver by the second communication interface；Standby signal emission module is used to for the vision signal to be converted to standby transmission signal, and is sent to signal receiver by third communication interface.The utility model embodiment can make the continuously display normal vision signal of front end display device, improve Consumer's Experience.
Description
Technical Field
The utility model relates to a video signal transmits technical field, concretely relates to signal transmission equipment, signal reception equipment and video signal transmission system.
Background
The current video signal transmission system may include a video source, a signal transmitting end and a signal receiving end, a signal switching device, and a front end display device. The signal transmitting end transmits the video signal collected from the video source to the front-end display device through the signal switching device and the signal receiving end to display the video signal. In the current video signal transmission system, each signal transmitting terminal transmits a video signal to the front-end display device, and only one transmission link corresponding to the video signal exists, that is, only one transmission link can be configured for the signal transmitting terminal and the signal receiving terminal by the signal switching device, and when any node in the video signal transmission system has transmission abnormality (for example, a transmission link failure or a device failure in the system), the front-end display device may display the video signal abnormality.
For example, as shown in fig. 1, in the video signal transmission system, both the signal transmitting end and the signal receiving end are optical transceivers, which can convert a video signal collected from a video source into an optical fiber signal and transmit the optical fiber signal through a signal switching device, and the signal switching device in the system provides a plurality of independent signal transmission channels for the transmission of multiple optical fiber signals. If the signal transmitting device 1 transmits a video signal acquired from the video source 1 to the front-end display device 1 through the signal switching device and the transmission link of the receiving end 1 for display, if the transmission link fails, for example, the optical fiber link transmitting the signal fails, a video signal display abnormality may occur in the front-end display device 1, or if the signal switching device fails, all the front-end display devices in the system may be caused to display abnormally, which reduces user experience.
SUMMERY OF THE UTILITY MODEL
The embodiment of the utility model provides a signalling equipment, signal reception equipment and video signal transmission system can make front end display device continuously show normal video signal, has promoted user experience.
In a first aspect, an embodiment of the present invention provides a signal transmitting apparatus, including:
the system comprises a first communication interface, a main signal transmitting module, a standby signal transmitting module, a second communication interface and a third communication interface;
the first communication interface is respectively connected with the input end of the main signal transmitting module and the input end of the standby signal transmitting module, the output end of the main signal transmitting module is connected with the second communication interface, and the output end of the standby signal transmitting module is connected with the third communication interface;
the first communication interface is used for receiving a video signal transmitted by a video source;
the main signal transmitting module is used for converting the video signal into a main transmission signal and sending the main transmission signal to the signal receiving equipment through the second communication interface;
and the standby signal transmitting module is used for converting the video signal into a standby transmission signal and transmitting the standby transmission signal to the signal receiving equipment through the third communication interface.
Optionally, the main signal transmitting module includes a first signal converting unit and/or a first signal encoding unit;
wherein, the first signal conversion unit is used for converting the video signal into an optical fiber signal or an HDBaseT signal;
the first signal encoding unit is used for encoding the video signal into a network signal.
Optionally, the standby signal transmitting module includes a second signal converting unit and/or a second signal encoding unit;
wherein, the second signal conversion unit is used for converting the video signal into an optical fiber signal or an HDBaseT signal;
the second signal encoding unit is used for encoding the video signal into a network signal.
Optionally, the apparatus further includes a signal preprocessing module, wherein:
the input end of the signal preprocessing module is connected with the first communication interface, and the output end of the signal preprocessing module is respectively connected with the input end of the main signal transmitting module and the input end of the standby signal transmitting module;
the signal preprocessing module is used for preprocessing the video signal transmitted by the video source, and the preprocessing operation comprises at least one of signal format conversion, character superposition and signal scaling.
Optionally, the system further includes a fourth communication interface, where:
the fourth communication interface is connected with the input end of the signal preprocessing module;
and the fourth communication interface is used for connecting the ring-out display equipment.
In a second aspect, an embodiment of the present invention provides a signal receiving apparatus, including:
the device comprises a first communication interface, a second communication interface, a main signal receiving module, a standby signal receiving module, a signal selection module and a third communication interface;
the first communication interface is connected with the input end of the main signal receiving module, the second communication interface is connected with the input end of the standby signal receiving module, the output end of the main signal receiving module and the output end of the standby signal receiving module are respectively connected with the input end of the signal selection module, and the output end of the signal selection module is connected with the third communication interface;
the first communication interface is used for receiving a main transmission signal transmitted by the signal transmitting equipment;
the second communication interface is used for receiving a standby transmission signal transmitted by the signal transmitting equipment;
the main signal receiving module is used for converting the main transmission signal into a main video signal;
the standby signal receiving module is used for converting the standby transmission signal into a standby video signal;
the signal selection module is used for selecting the main video signal or the standby video signal and transmitting the selected video signal to front-end display equipment through the third communication interface.
Optionally, the main signal receiving module includes a first signal conversion unit and/or a first signal decoding unit;
wherein, if the main transmission signal is an optical fiber signal or an HDBaseT signal, the first signal conversion unit is configured to convert the optical fiber signal or the HDBaseT signal into the main video signal;
if the main transmission signal is a network signal, the first signal decoding unit is configured to decode the network signal into the main video signal.
Optionally, the standby signal transmitting module includes a second signal converting unit and/or a second signal decoding unit;
wherein, if the standby transmission signal is an optical fiber signal or an HDBaseT signal, the second signal conversion unit is configured to convert the optical fiber signal or the HDBaseT signal into the standby video signal;
if the main transmission signal is a network signal, the second signal decoding unit is configured to decode the network signal into the standby video signal.
Optionally, the apparatus further includes a signal post-processing module, wherein:
the input end of the signal post-processing module is connected with the output end of the signal selection module, and the output end of the signal post-processing module is connected with the third communication interface;
the signal post-processing module is configured to perform post-processing operation on the selected video signal, where the post-processing operation includes at least one of signal format control, image scaling, and image frame rate adjustment.
In a third aspect, an embodiment of the present invention provides a video signal transmission system, including:
the system comprises a video source, a signal transmitting device, a signal receiving device and a front-end display device;
the output end of the video source is connected with the input end of the signal transmitting equipment;
the output end of the signal transmitting equipment is connected with the input end of the signal receiving equipment;
the output end of the signal receiving equipment is connected with the front-end display equipment;
the signal transmitting apparatus comprises the signal transmitting apparatus of any one of the first aspects;
the signal receiving apparatus comprises the signal receiving apparatus of any one of the second aspects.
In a fourth aspect, an embodiment of the present invention provides a video signal transmission system, including:
the system comprises a video source, a signal transmitting device, a main signal switching device, a standby signal switching device, a signal receiving device and a front-end display device;
the output end of the video source is connected with the input end of the signal transmitting equipment;
the first output end of the signal transmitting equipment is connected with the input end of the main signal switching equipment;
the second output end of the signal transmitting equipment is connected with the input end of the standby signal switching equipment;
the output end of the main signal switching equipment and the output end of the standby signal switching equipment are respectively connected with the input end of the signal receiving equipment;
the output end of the signal receiving equipment is connected with the front-end display equipment;
the signal transmitting apparatus comprises the signal transmitting apparatus of any one of the first aspects;
the signal receiving apparatus comprises the signal receiving apparatus of any one of the second aspects.
In a fifth aspect, an embodiment of the present invention provides a video signal transmission method, including:
the signal transmitting equipment converts the video signal into a main transmission signal and a standby transmission signal;
the signal transmitting equipment transmits the main transmission signal to signal receiving equipment;
and the signal transmitting equipment transmits the standby transmission signal to the signal receiving equipment.
Optionally, the sending, by the signal transmitting device, the main transmission signal to the signal receiving device includes:
the signal transmitting equipment transmits the main transmission signal to the signal receiving equipment through main signal switching equipment;
the signal transmitting apparatus transmitting the standby transmission signal to the signal receiving apparatus includes:
and the signal transmitting equipment transmits the standby transmission signal to the signal receiving equipment through standby signal switching equipment.
Optionally, the sending, by the signal sending device, the standby transmission signal to the signal receiving device includes:
the signal transmitting equipment transmits the main transmission signal to the signal receiving equipment and simultaneously transmits the standby transmission signal to the signal receiving equipment; or,
and after receiving a standby link starting signal sent by the signal receiving equipment, the signal transmitting equipment sends the standby transmission signal to the signal receiving equipment.
Optionally, before the signal transmitting device converts the video signal into the main transmission signal and the standby transmission signal, the method further includes:
the signal transmitting equipment carries out preprocessing operation on a received video source signal to obtain the video signal, wherein the preprocessing operation comprises at least one of signal format conversion, character superposition and signal scaling.
Optionally, the method further includes:
the signal transmitting device transmits the video source signal to an egress display device.
In a sixth aspect, an embodiment of the present invention provides a video signal transmission method, including:
the signal receiving equipment detects whether the main transmission signal is effective or not;
if so, the signal receiving equipment converts the main transmission signal into a main video signal and transmits the main video signal to front-end display equipment;
if not, the signal receiving equipment converts the received standby transmission signal into a standby video signal and transmits the standby video signal to the front-end display equipment.
Optionally, the detecting, by the signal receiving device, whether the main transmission signal is valid includes:
the signal receiving equipment detects whether a main transmission signal is received within a preset time length; or,
the signal receiving equipment detects whether the format of the received signal is a main transmission signal format; or,
the signal receiving apparatus detects whether a signal state of the received main transmission signal is stable.
Optionally, the method further includes:
the signal receiving equipment receives the standby transmission signal sent by the signal sending equipment while receiving the main transmission signal sent by the signal sending equipment.
Optionally, if the transmission signal is not received, before the signal receiving device transmits the received standby transmission signal to the front-end display device, the method further includes:
the signal receiving equipment transmits a standby link starting signal to the signal transmitting equipment;
and the signal receiving equipment receives the standby transmission signal sent by the signal transmitting equipment.
Optionally, the method further includes:
the signal receiving device carries out post-processing operation on the main video signal or the standby video signal, wherein the post-processing operation comprises at least one of signal format control, image scaling and image frame rate adjustment.
In a seventh aspect, an embodiment of the present invention provides a signal transmitting apparatus, which includes a functional unit, where the functional unit is configured to perform some or all of the steps described in any of the methods according to the fifth aspect of the embodiments of the present invention.
In an eighth aspect, an embodiment of the present invention provides a signal receiving apparatus, where the signal receiving apparatus includes a functional unit, where the functional unit is configured to perform some or all of the steps described in any of the methods according to the sixth aspect of the embodiments of the present invention.
The embodiment of the utility model provides an in, signalling equipment through configuration main signal transmission module with be equipped with signalling module, can send main transmission signal and be equipped with transmission signal to signal receiving equipment, and then when the main communication link that is used for transmitting main transmission signal takes place unusually, the transmission signal that is equipped with that sends through signalling equipment makes front end display device continuously show normal video signal, has promoted user experience.
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 description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only 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 schematic diagram of a video signal transmission system disclosed in the prior art;
fig. 2 is a schematic structural diagram of a video signal transmission system according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of another video signal transmission system according to an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a signal transmitting device disclosed in an embodiment of the present invention;
fig. 5 is a schematic structural diagram of a signal receiving device disclosed in an embodiment of the present invention;
fig. 6 is a schematic flow chart of a video signal transmission method according to an embodiment of the present invention;
fig. 7 is a schematic flow chart of another video signal transmission method according to an embodiment of the present invention;
fig. 8 is an element diagram of a signal transmitting device according to an embodiment of the present invention;
fig. 9 is an element diagram of a signal receiving device according to an embodiment of the present invention.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts belong to the protection scope of the present invention.
The terms "first," "second," and the like in the description and in the claims, and in the drawings described above, are used for distinguishing between different objects and not necessarily for describing a particular sequential or chronological order. Furthermore, the terms "include" and "have," as well as any variations thereof, are intended to cover non-exclusive inclusions. For example, a process, method, system, article, or apparatus that comprises a list of steps or elements is not limited to only those steps or elements listed, but may alternatively include other steps or elements not listed, or inherent to such process, method, article, or apparatus.
Reference herein to "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment can be included in at least one embodiment of the invention. The appearances of the phrase in various places in the specification are not necessarily all referring to the same embodiment, nor are separate or alternative embodiments mutually exclusive of other embodiments. It is explicitly and implicitly understood by one skilled in the art that the embodiments described herein can be combined with other embodiments.
The following describes a video signal transmission system disclosed in an embodiment of the present invention.
Please refer to fig. 2, fig. 2 is a schematic structural diagram of a video signal transmission system according to an embodiment of the present invention.
As shown in fig. 2, the video signal transmission system includes a video source 201, a signal transmitting apparatus 202, a signal receiving apparatus 203, and a front-end display apparatus 204. The output end of the video source 201 is connected with the input end of the signal transmitting device 202, the output end of the signal transmitting device 202 is connected with the input end of the signal receiving device 203, and the output end of the signal receiving device 203 is connected with the front-end display device 204. The communication interface 2021 and the communication interface 2022 included in the signal transmitting apparatus 202 are respectively connected to the communication interface 2031 and the communication interface 2032 of the signal receiving apparatus 203, so that the signal transmitting apparatus 202 can respectively send the main transmission signal and the standby transmission signal to the signal receiving apparatus 203 through the two communication links.
It should be noted that, when the system includes only one video source, the signal transmitting device 202 may be directly connected to the signal receiving device 203 through a fiber optic data line and/or a twisted pair, or may be connected to the signal receiving device 203 through the main signal switching device and the standby signal switching device.
The communication interface 2021 of the signal transmission apparatus 202 transmits a main transmission signal to the communication interface 2031 of the signal reception apparatus 203, and the communication interface 2022 of the signal transmission apparatus 202 transmits a standby transmission signal to the communication interface 2032 of the signal reception apparatus 203. The communication interface can support bidirectional signal transmission or unidirectional signal transmission. The main transmission signal may be any one of an optical fiber signal, an HDBaseT signal, or a network signal, and the standby transmission signal may be any one of a network signal, an HDBaseT signal, or an optical fiber signal.
The structure of the signal transmitting device 202 can refer to the schematic structure of the signal transmitting device 400 shown in fig. 4, and the structure of the signal receiving device 203 can refer to the schematic structure of the signal receiving device 500 shown in fig. 5. A method of transmitting a signal to the signal receiving apparatus 203 by the signal transmitting apparatus 202 may refer to a video signal transmission method shown in fig. 6, and a method of receiving a signal transmitted from the signal transmitting apparatus 202 by the signal receiving apparatus 203 may refer to a video signal transmission method shown in fig. 7.
Optionally, the system may further include an out-loop display device, where the out-loop display device is used for monitoring the video source signal collected by the signal transmitting device for the background personnel. The signal transmitting apparatus 202 may further include another communication interface, which is connected to the display apparatus, in addition to the above-described two communication interfaces. Or, this go back to the output that display device connects the video source, the embodiment of the utility model provides a do not limit.
Referring to fig. 3, fig. 3 is a schematic structural diagram of another video signal transmission system according to an embodiment of the present invention.
As shown in FIG. 3, the video signal transmission system includes N video sources 311-3N 1, N signal emitting devices 312-3N 2, a main signal switching device 313, a standby signal switching device 314, N signal receiving devices 315-3N 5, and N front end display devices 316-3N 6. The main signal switching device 313 is at least configured with N input terminals and N output terminals; the standby signal switching device 314 is configured with N inputs and N outputs. Each signal transmitting device is at least provided with two communication interfaces with a signal transmitting function, and each signal receiving device is at least provided with two communication interfaces with a signal receiving function. One of the communication interfaces of the signal emitting device is connected to an input of the main signal switching device 313 and the other communication interface of the signal emitting device is connected to an input of the standby signal switching device 314. One of the communication interfaces of the signal receiving device is connected to an output of the main signal switching device 313 and the other of the communication interfaces of the signal receiving device is connected to an output of the standby signal switching device 314. Namely, the main signal switching device 313 and the standby signal switching device 314 respectively provide transmission signal link channels for the signal transmitting device and the corresponding signal receiving device. In the system, the communication interface supports bidirectional signal transmission or unidirectional signal transmission. The signal transmitting equipment sends a main transmission signal to the signal receiving equipment through the main signal switching equipment, and the signal transmitting equipment sends a standby transmission signal to the signal receiving equipment through the standby signal switching equipment. The main transmission signal may be any one of an optical fiber signal, an HDBaseT signal, or a network signal, and the standby transmission signal may be any one of a network signal, an HDBaseT signal, or an optical fiber signal. The signal types of the main transmission signal and the standby transmission signal can be the same or different. The main signal switch and the standby signal switch may be of the same or different types, and the main signal switch or the standby signal switch may be any one of, but not limited to, a tile processor, a matrix, a KVM (Keyboard Video Mouse) matrix, and a network switch. For example, the main signal switching device may be a splicing processor configured to transmit a main transmission signal with a signal type of an optical fiber signal, and the standby signal switching device may be a network switch configured to transmit a standby transmission signal with a signal type of a network signal.
The video source may output a DVI (Digital Visual Interface), a VGA (video graphics Array), an HDMI (High definition multimedia Interface), and other signals. The signal transmitting equipment can process the signal output by the video source, convert the signal into a main transmission signal and a standby transmission signal according to the signal type supported by the signal switching equipment, and transmit the main transmission signal and the standby transmission signal to the signal receiving equipment through the main signal switching equipment and the standby signal switching equipment respectively. The front-end display equipment can support and display DVI, VGA, HDMI and other signal formats.
Specifically, the structures of the signal transmitting devices 312 to 3N2 can be referred to the structural schematic diagram of the signal transmitting device 400 shown in FIG. 4, and the structures of the signal receiving devices 315 to 3N5 can be referred to the structural schematic diagram of the signal receiving device 500 shown in FIG. 5. The video signal transmission method shown in FIG. 6 can be used as a method for transmitting signals from the signal transmitting devices 312 to 3N2 to the signal receiving devices 315 to 3N5, and the video signal transmission method shown in FIG. 7 can be used as a method for receiving signals transmitted from the signal transmitting devices 312 to 3N2 by the signal receiving devices 315 to 3N 5.
Optionally, the system may further include an out-loop display device, where the out-loop display device is used for monitoring video source signals collected by the video source by a background person. The signal emitting devices 312-3N 2 may further include a third communication interface in addition to the two communication interfaces described above, the third communication interface being coupled to a display device. Or, this go back to the output that display device connects the video source, the embodiment of the utility model provides a do not limit.
The embodiment of the utility model provides an in, transmit main transmission signal and be equipped with transmission signal to signal receiving equipment through signalling equipment, appear unusual when the transmission link of transmitting main transmission signal, when signal receiving equipment received main transmission signal became invalid promptly, signal receiving equipment can show the transmission signal of being equipped with of receipt to front end display device. Therefore, the normal video signals can be continuously displayed by the front-end display equipment, and the user experience is improved.
An embodiment of the device of the present invention is described below. The embodiment of the present invention provides an apparatus embodiment which can be applied to the system described in the above embodiment.
Please refer to fig. 4, fig. 4 is a schematic structural diagram of a signal transmitting apparatus according to an embodiment of the present invention. The signal transmitting apparatus 400 includes a first communication interface 401, a main signal transmitting module 402, a standby signal transmitting module 403, a second communication interface 404, and a third communication interface 405.
The first communication interface 401 is connected to the input end of the main signal transmitting module 402 and the input end of the standby signal transmitting module 403, the output end of the main signal transmitting module 402 is connected to the second communication interface 404, and the output end of the standby signal transmitting module 403 is connected to the third communication interface 405.
The first communication interface 401 may be connected to a video source in the system, and is configured to receive a video source signal transmitted by the video source, convert the video source signal into a video signal, and further transmit the video signal to the main signal transmitting module and the standby signal transmitting module, respectively; the main signal transmitting module 402 may convert the video signal into a main transmission signal and transmit the main transmission signal to the second communication interface 404; the standby signal transmitting module 403 may convert the video signal into a standby transmission signal, and transmit the standby transmission signal to the third communication interface 405; the second communication interface 404 may transmit the main transmission signal to the signal receiving device directly, or transmit the main transmission signal to the signal receiving device through the main signal switching device; the third communication interface 405 may directly transmit the standby transmission signal to the signal receiving apparatus, or transmit the standby transmission signal to the signal receiving apparatus through the standby signal switching apparatus.
The communication interface may support two-way signal communication or one-way signal communication.
Optionally, the main signal transmitting module 402 may include a first signal converting unit and/or a first signal encoding unit. The main signal transmitting module 402 may convert the video signal into an optical fiber signal or an HDBaseT signal through the first signal converting unit or convert the video signal into a network signal through the first signal encoding unit according to a signal type agreed with the signal receiving device or a signal transmission type supported by the connected main signal switching device. For example, when the main signal switching device is a splicing processor, a matrix or a KVM matrix, the main signal transmitting module may convert the video signal into an optical fiber signal or an HDBaseT signal through the first signal conversion unit, and when the main signal switching device is a network switch, convert the video signal into a network signal. The first signal conversion unit may be an FPGA (Field Programmable Gate Array) signal conversion device. It should be noted that the main signal transmitting module 402 may include both the first signal converting unit and the first signal encoding unit, and may also include the first signal converting unit or the first signal encoding unit.
Optionally, the signal transmitting module 403 may include a second signal converting unit and/or a second signal encoding unit. The standby signal transmitting module 403 may convert the video signal into an optical fiber signal or an HDBaseT signal through the second signal converting unit or convert the video signal into a network signal through the second signal encoding unit according to a signal type agreed with the signal receiving device or a signal transmission type supported by the connected standby signal switching device. For example, when the standby signal switching device is a splicing processor, a matrix or a KVM matrix, the standby signal transmitting module may convert the video signal into an optical fiber signal or an HDBaseT signal through the second signal converting unit, and when the main signal switching device is a network switch, convert the video signal into a network signal. The second signal conversion unit may be an FPGA (Field Programmable Gate Array) signal conversion device. It should be noted that the standby signal transmitting module 403 may include both the second signal converting unit and the second signal encoding unit, and may also include the second converting unit or the second signal encoding unit.
The signal types of the main transmission signal and the standby transmission signal can be the same or different. The main signal transmitting module 402 and the standby signal transmitting module 403 may work simultaneously, that is, the signal transmitting apparatus 400 transmits the main transmission signal and the standby transmission signal simultaneously. The main signal transmitting module 402 and the standby signal transmitting module 403 may also work different from each other, for example, the signal transmitting apparatus 400 first transmits a main transmission signal through the main signal transmitting module 402, and when receiving a standby link starting signal, transmits a standby transmission signal through the standby signal transmitting module 403.
Optionally, the signal transmitting apparatus 400 may further include a signal preprocessing module 406.
The output end of the signal preprocessing module 406 is respectively connected to the input end of the main signal transmitting module 402 and the input end of the standby signal transmitting module 403;
the signal preprocessing module 406 is configured to perform preprocessing operations on the video signal transmitted from the video source, where the preprocessing operations include at least one of signal format conversion (e.g., RGB signal conversion, etc.), superimposing characters, and signal scaling.
Optionally, the signal transmitting apparatus 400 may further include a fourth communication interface 407.
The fourth communication interface 407 is connected to the output end of the signal preprocessing module 406;
the fourth communication interface 407 is used to connect a ring-out display device, so that the background can conveniently check a certain video source signal at the signal transmitting end.
The embodiment of the utility model provides an in, signal transmission equipment can send two way signals to signal reception equipment through configuration main signal transmission module and be equipped with signal transmission module to when the transmission link of transmission main transmission signal appears unusually, when signal reception equipment received main transmission signal became invalid promptly, signal reception equipment can show the transmission signal transmission of being equipped with of receipt to front end display device. The front-end display equipment is ensured to continuously display normal video signals, and the user experience is improved.
Please refer to fig. 5, fig. 5 is a schematic structural diagram of a signal receiving apparatus according to an embodiment of the present invention. The signal receiving apparatus 500 includes a first communication interface 501, a second communication interface 502, a main signal receiving module 503, a standby signal receiving module 504, a signal selecting module 505, and a third communication interface 506.
The first communication interface 501 is connected to an input end of the main signal receiving module 503, the second communication interface 502 is connected to an input end of the standby signal receiving module 504, an output end of the main signal receiving module 503 and an output end of the standby signal receiving module 504 are respectively connected to an input end of the signal selecting module 505, and an output end of the signal selecting module 505 is connected to the third communication interface 506.
The first communication interface 501 is used for receiving a main transmission signal transmitted by a signal transmitting device. The first communication interface 501 may receive the main transmission signal through the direct connection signal transmitting device or receive the main transmission signal through the main signal switching device.
The second communication interface 502 is configured to receive a standby transmission signal transmitted by the signal transmitting apparatus. The second communication interface 502 may receive the standby transmission signal through a standby signal switching device or through a standby transmission signal directly connected to the signal transmitting device.
The signal receiving apparatus 500 may receive the main transmission signal and the standby transmission signal through the first communication interface 501 and the second communication interface 502 at the same time, or may receive the main transmission signal first and receive the standby transmission signal according to the selection instruction of the signal selection module. The first communication interface 501 and the second communication interface 502 may support bidirectional signal communication or unidirectional signal communication.
The main signal receiving module 503 is configured to convert the main transmission signal into a main video signal; the standby signal receiving module 504 is configured to convert the standby transmission signal into a standby video signal; the signal selection module 505 is configured to select the main video signal or the standby video signal, and transmit the selected video signal to a front-end display device through the third communication interface 506.
Optionally, the main signal receiving module 503 may include a first signal converting unit and/or a first signal decoding unit. The main signal receiving module 503 may convert the optical fiber signal or the HDBaseT signal into the main video signal through the first signal conversion unit or convert the network signal into the main video signal through the first signal encoding unit according to a signal type agreed with the signal transmitting device or a signal transmission type supported by the connected main signal switching device. For example, when the main signal switching device is a splicing processor, a matrix, or a KVM matrix, the main signal receiving module 503 may convert the optical fiber signal or the HDBaseT signal into a main video signal through the first signal conversion unit, and when the main signal switching device is a network switch, the main signal receiving module 503 may convert the network signal into a main video signal. The first signal conversion unit may be an FPGA (Field programmable gate Array) signal conversion device. It should be noted that the main signal receiving module 503 may include both the first signal converting unit and the first signal decoding unit, and may also include the first signal converting unit or the first signal decoding unit.
Optionally, the signal receiving module 504 may include a second signal conversion unit and/or a second signal decoding unit. The standby signal receiving module 504 may convert the optical fiber signal or the HDBaseT signal into the standby video signal through the second signal conversion unit or convert the network signal into the standby video signal through the second signal encoding unit according to a signal type agreed with the signal transmitting device or a signal transmission type supported by the connected standby signal switching device. For example, when the standby signal switching device is a splicing processor, a matrix, or a KVM matrix, the standby signal receiving module 504 may convert the optical fiber signal or the HDBaseT signal into the standby video signal through the second signal conversion unit, and when the standby signal switching device is a network switch, the standby signal receiving module 504 converts the network signal into the standby video signal. The second signal conversion unit may be an FPGA (Field programmable gate Array) signal conversion device. It should be noted that the standby signal receiving module 504 may include both the second signal converting unit and the second signal decoding unit, and may also include the second signal converting unit or the second signal decoding unit.
It should be noted that the main signal receiving module 503 and the signal selecting module 505 may be independent hardware modules respectively, or may be combined into one hardware module. When the main signal receiving module 503 and the signal selecting module 505 are independent hardware modules, the signal selecting module may first determine whether the main video signal transmitted by the main signal receiving module 503 is valid, if so, select the main video signal as the video signal transmitted to the front-end display device, and if not, select the standby video signal as the video signal transmitted to the front-end display device. Or, when the signal selection module 505 and the main signal receiving module 503 are combined into one hardware module or when the main signal receiving module 503 and the signal selection module 505 are independent hardware modules, the main signal receiving module 503 may send the received main transmission signal to the signal selection module 505, the signal selection module 505 determines whether the main transmission signal is valid, if so, the signal selection module 505 notifies the main signal receiving module 503 to convert the main transmission signal into a main video signal and transmit the main video signal to the third communication interface 506, and if not, the signal selection module 505 notifies the standby signal receiving module 504 to convert the standby transmission signal into a standby video signal and transmit the standby video signal to the third communication interface 506.
The signal selection module 505 may monitor whether the main transmission signal or the main video signal is valid in real time after selecting the standby transmission signal, and if the main transmission signal or the main video signal is monitored to be restored to a valid state, reselect the main video signal and transmit the main video signal to the third communication interface 506 for display by the front-end display device.
Optionally, the signal receiving apparatus 500 may further include a signal post-processing module 507.
The input end of the signal post-processing module 507 is connected to the output end of the signal selection module 505, and the output end of the signal post-processing module 507 is connected to the third communication interface 506;
the signal post-processing module 507 is configured to perform post-processing operations on the selected video signal, where the post-processing operations include at least one of signal format control, image scaling, and image frame rate adjustment.
The embodiment of the utility model provides an in, signal receiving equipment is through configuration main signal receiving module and being equipped with signal receiving module, can receive the two way signals of signal emission equipment transmission, and through confirming whether inefficacy of received main transmission signal, signal receiving equipment can show the transmission signal transmission of being equipped with of receipt to front end display device. The front-end display equipment is ensured to continuously display normal video signals, and the user experience is improved.
The following describes embodiments of the method of the present invention. The embodiment of the utility model provides an in method embodiment can be applied to above-mentioned device embodiment.
Please refer to fig. 6, fig. 6 is a schematic flow chart of a video signal transmission method according to an embodiment of the present invention. The method is applied to a signal transmitting device. As shown in fig. 6, the method includes the following steps.
Step S601, the signal transmitting device converts the video signal into a main transmission signal and a standby transmission signal.
In one embodiment, the signal transmitting apparatus may convert a video signal into a main transmission signal and a standby transmission signal. The main transmission signal and the standby transmission signal can be the same or different in type. The main transmission signal may be any one of an optical fiber signal, an HDBaseT signal, or a network signal, and the standby transmission signal may be any one of a network signal, an HDBaseT signal, or an optical fiber signal. The step can be realized by the main signal transmission module and the standby signal transmission module in the embodiment of the device.
Optionally, before the signal transmitting device converts the video signal into the main transmission signal and the standby transmission signal, the signal transmitting device may perform a preprocessing operation on the received video source signal transmitted by the video source to obtain the video signal. Wherein the preprocessing operates at least one of signal format conversion (e.g., to RGB signals), superimposing characters, signal scaling. This step can be implemented by the signal preprocessing module in the above-mentioned device embodiment.
Optionally, the signal transmitting device may further transmit a video source signal collected from a video source to the loop-out display device, so that the background is convenient to view a certain video source signal at the signal transmitting end.
Step S602, the signal transmitting apparatus sends the main transmission signal to a signal receiving apparatus.
Step S603, the signal transmitting device sends the standby transmission signal to the signal receiving device.
In one embodiment, the signal transmitting apparatus may simultaneously transmit the main transmission signal and the standby transmission signal to the signal receiving apparatus; or, the signal transmitting device firstly transmits the main transmission signal, and then transmits the standby transmission signal after receiving the standby link starting signal transmitted by the signal receiving device. The signal transmitting equipment can directly send the main transmission signal and the standby transmission signal to the signal receiving equipment or respectively send the main transmission signal and the standby transmission signal to the main signal switching equipment and the standby signal switching equipment in the system according to the structure of the system where the signal transmitting equipment is located. Step S602 and step S603 can be implemented by the communication interface in the above device embodiment.
The embodiment of the utility model provides an in, signal transmission equipment is through sending main transmission signal and being equipped with transmission signal to signal reception equipment to when the transmission link that transmits main transmission signal appears unusually, when signal reception equipment received main transmission signal became invalid promptly, signal transmission equipment can show the transmission signal that is equipped with of receipt to front end display device. The front-end display equipment is ensured to continuously display normal video signals, and the user experience is improved.
Referring to fig. 7, fig. 7 is a schematic flow chart illustrating another video signal transmission method according to an embodiment of the present invention. The method is applied to a signal receiving device. As shown in fig. 7, the method includes the following steps.
In step S701, the signal receiving apparatus detects whether the primary transmission signal is valid.
In one embodiment, the signal receiving device detecting whether the main transmission signal is received includes the signal receiving device detecting whether the main transmission signal is received within a preset time period, and if the main transmission signal is not received within the preset time period, it indicates that the main transmission signal is lost and the main transmission signal communication link is abnormal; or, detecting whether the main transmission signal is valid, specifically, detecting whether a signal format of the main transmission signal is a main transmission signal format, and further, the signal format may be a transmitted data packet format, where the data packet format includes interface information of a signal transmitting device that transmits the data packet, and determining whether the received data packet format is the main transmission signal format by detecting whether the interface information in the data packet format is the interface information of the signal transmitting device that transmits the main transmission signal. If yes, the main transmission signal is valid, and if not, the main transmission signal is invalid, and a main transmission signal communication link is in fault; or, detecting whether the signal state of the main transmission signal is stable, if detecting that the packet header serial numbers of adjacent data packets of the received main transmission signal are discontinuous, CRC check bit data errors, and the like, if so, indicating that the main transmission signal is valid, and if not, indicating that the main transmission signal is invalid, and a main transmission signal communication link fails. This step can be implemented by the processing unit or the control unit in the signal selection module or the main signal receiving module in the above-mentioned device embodiment.
Optionally, the fault node in the main transmission communication link can be determined by detecting the state of the main transmission signal, the diagnosed fault node can be fed back to the signal transmitting device, and the diagnosed fault node is transmitted to the loop-out display device through the signal transmitting device, so that a background maintainer can find the fault node in time and maintain the fault node.
Step S702, if yes, the signal receiving device converts the main transmission signal into a main video signal, and transmits the main video signal to a front-end display device.
Step S703, if not, the signal receiving device converts the received standby transmission signal into a standby video signal, and transmits the standby video signal to the front-end display device.
In one embodiment, if the signal receiving device detects that the main transmission signal is valid, the main transmission signal can be converted into a main video signal and transmitted to the front-end display device; if the signal receiving equipment detects that the standby transmission signal is invalid, the standby transmission signal can be converted into a standby video signal and transmitted to the front-end display equipment. The above steps can be realized by the main signal receiving module, the standby signal receiving module and the communication interface in the above device embodiment.
Optionally, the signal receiving device may receive the main transmission signal and the standby transmission signal at the same time, or may receive the standby transmission signal after the signal receiving device detects that the main transmission signal is invalid and sends the standby link starting signal to the signal transmitting device. The signal receiving equipment can directly send a standby link starting signal to the signal transmitting equipment or send a standby link starting signal through standby signal switching equipment in the system, the standby signal switching equipment can configure a communication channel for transmitting the standby link starting signal for the signal receiving equipment according to interface address information in the standby link starting signal, and the interface address signal comprises a second communication interface address of the signal receiving equipment and a third communication interface address of the signal transmitting equipment so as to receive the standby transmission signal sent by the signal transmitting equipment.
Optionally, the signal receiving device may further perform a post-processing operation on the converted main video signal or the converted standby video signal, where the post-processing operation includes at least one of signal format control (matching a format supported by the front-end display device), image scaling, and image frame rate adjustment. This step can be implemented by the signal post-processing module in the above-mentioned device embodiment.
The embodiment of the utility model provides an in, signal receiving equipment is through the two way signals of receiving signal emission equipment transmission to whether detect the main transmission signal of receiving and become invalid, signal receiving equipment can show the transmission signal of being equipped with of receiving to front end display device. The front-end display equipment is ensured to continuously display normal video signals, and the user experience is improved.
Embodiments of the device of the present invention are described below. The embodiment of the utility model provides an in functional unit can realize based on above-mentioned device embodiment.
Please refer to fig. 8, fig. 8 is an element diagram of a signal transmitting apparatus according to an embodiment of the present invention. The signal transmitting apparatus 800 includes a conversion unit 801, a first transmission unit 802, and a second transmission unit 803.
The conversion unit 801 is configured to convert a video signal into a main transmission signal and a standby transmission signal;
a first sending unit 802, configured to send the main transmission signal to a signal receiving device;
a second sending unit 803, configured to send the standby transmission signal to the signal receiving device.
Optionally, the first sending unit 802 is further configured to send the main transmission signal to the signal receiving device through a main signal switching device;
the second sending unit 803 is further configured to send the standby transmission signal to the signal receiving device through a standby signal switching device.
Optionally, the second sending unit 803 is configured to send the standby transmission signal to the signal receiving apparatus while the first sending unit 802 sends the main transmission signal to the signal receiving apparatus; or, after receiving a standby link start signal sent by the signal receiving device, the standby transmission signal is sent to the signal receiving device.
Optionally, the signal transmitting apparatus 800 may further include a preprocessing unit 804, where the preprocessing unit 804 is configured to perform a preprocessing operation on the received video source signal to obtain the video signal, and the preprocessing operation includes at least one of signal format conversion, superimposing characters, and signal scaling.
Optionally, the signal transmitting apparatus 800 may further include a third transmitting unit 805, where the third transmitting unit 805 is configured to transmit a video source signal collected from a video source to the loop-out display apparatus.
Referring to fig. 9, fig. 9 is an element diagram of a signal receiving apparatus according to an embodiment of the present invention. The signal receiving apparatus 900 may include a detecting unit 901, a first transmitting unit 902 and a second transmitting unit 903.
The detecting unit 901 is configured to detect whether the main transmission signal is valid;
a first transmission unit 902, configured to, if a result detected by the detection unit is yes, convert the main transmission signal into a main video signal, and transmit the main video signal to a front-end display device;
and the second transmission unit 903 is configured to convert the received standby transmission signal into a standby video signal and transmit the standby video signal to the front-end display device if the detection result of the detection unit is negative.
Optionally, the detecting unit 901 is configured to:
detecting whether a main transmission signal is received within a preset time length; or,
detecting whether the received signal format is a main transmission signal format; or,
and detecting whether the signal state of the received main transmission signal is stable.
Optionally, the signal receiving apparatus 900 further includes a third transmission unit 904, configured to receive the standby transmission signal sent by the signal sending apparatus while receiving the main transmission signal sent by the signal sending apparatus.
Optionally, the second transmission unit 903 is further configured to:
if the detection result of the detection unit 901 is negative, transmitting a standby link starting signal to the signal transmitting equipment;
and receiving the standby transmission signal sent by the signal transmitting equipment.
Optionally, the signal receiving apparatus 900 may further include a post-processing unit 905, configured to perform a post-processing operation on the main video signal or the standby video signal, where the post-processing operation includes at least one of signal format control, image scaling, and image frame rate adjustment.
The functional units are used for implementing corresponding steps in the embodiments of the method, and are not described herein again.
It should be noted that, for simplicity of description, the above-mentioned method embodiments are described as a series of action combinations, but those skilled in the art should understand that the present invention is not limited by the described action sequence, because some steps can be performed in other sequences or simultaneously according to the present invention. Further, those skilled in the art should also appreciate that the embodiments described in the specification are preferred embodiments and that the acts and modules referred to are not necessarily required by the invention.
In the foregoing embodiments, the descriptions of the respective embodiments have respective emphasis, and for parts that are not described in detail in a certain embodiment, reference may be made to related descriptions of other embodiments.
In the embodiments provided in the present application, it should be understood that the disclosed apparatus may be implemented in other manners. For example, the above-described embodiments of the apparatus are merely illustrative, and for example, the division of the units is only one type of division of logical functions, and there may be other divisions when actually implementing, for example, a plurality of units or components may be combined or may be integrated into another system, or some features may be omitted, or not implemented. In addition, the shown or discussed mutual coupling or direct coupling or communication connection may be an indirect coupling or communication connection of some interfaces, devices or units, and may be an electric or other form.
The units described as separate parts may or may not be physically separate, and parts displayed 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 can be selected according to actual needs to achieve the purpose of the solution of the embodiment.
In addition, functional units in the embodiments of the present invention may be integrated into one processing unit, or each unit may exist alone physically, or two or more units are integrated into one unit. The integrated unit can be realized in a form of hardware, and can also be realized in a form of a software functional unit.
The integrated unit, if implemented in the form of a software functional unit and sold or used as a stand-alone product, may be stored in a computer readable memory. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a memory and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to perform all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned memory comprises: a U-disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a removable hard disk, a magnetic or optical disk, and other various media capable of storing program codes.
Those skilled in the art will appreciate that all or part of the steps in the methods of the above embodiments may be implemented by associated hardware instructed by a program, which may be stored in a computer-readable memory, which may include: flash Memory disks, Read-Only memories (ROMs), Random Access Memories (RAMs), magnetic or optical disks, and the like.
The embodiments of the present invention have been described in detail, and the principles and embodiments of the present invention have been explained herein using specific embodiments, and the above description of the embodiments is only used to help understand the method and the core idea of the present invention; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the specific implementation and application scope, to sum up, the content of the present specification should not be understood as the limitation of the present invention.
Claims (11)
1. A signal transmitting apparatus, comprising:
the system comprises a first communication interface, a main signal transmitting module, a standby signal transmitting module, a second communication interface and a third communication interface;
the first communication interface is respectively connected with the input end of the main signal transmitting module and the input end of the standby signal transmitting module, the output end of the main signal transmitting module is connected with the second communication interface, and the output end of the standby signal transmitting module is connected with the third communication interface;
the first communication interface is used for receiving a video signal transmitted by a video source;
the main signal transmitting module is used for converting the video signal into a main transmission signal and sending the main transmission signal to the signal receiving equipment through the second communication interface;
and the standby signal transmitting module is used for converting the video signal into a standby transmission signal and transmitting the standby transmission signal to the signal receiving equipment through the third communication interface.
2. The apparatus of claim 1, wherein the main signal transmitting module comprises a first signal converting unit and/or a first signal encoding unit;
wherein, the first signal conversion unit is used for converting the video signal into an optical fiber signal or an HDBaseT signal;
the first signal encoding unit is used for encoding the video signal into a network signal.
3. The apparatus of claim 1, wherein the signal transmitting module comprises a second signal converting unit and/or a second signal encoding unit;
wherein, the second signal conversion unit is used for converting the video signal into an optical fiber signal or an HDBaseT signal;
the second signal encoding unit is used for encoding the video signal into a network signal.
4. The apparatus of any one of claims 1-3, further comprising a signal pre-processing module, wherein:
the input end of the signal preprocessing module is connected with the first communication interface, and the output end of the signal preprocessing module is respectively connected with the input end of the main signal transmitting module and the input end of the standby signal transmitting module;
the signal preprocessing module is used for preprocessing the video signal transmitted by the video source, and the preprocessing operation comprises at least one of signal format conversion, character superposition and signal scaling.
5. The device of claim 4, further comprising a fourth communication interface, wherein:
the fourth communication interface is connected with the input end of the signal preprocessing module;
and the fourth communication interface is used for connecting the ring-out display equipment.
6. A signal receiving apparatus, comprising:
the device comprises a first communication interface, a second communication interface, a main signal receiving module, a standby signal receiving module, a signal selection module and a third communication interface;
the first communication interface is connected with the input end of the main signal receiving module, the second communication interface is connected with the input end of the standby signal receiving module, the output end of the main signal receiving module and the output end of the standby signal receiving module are respectively connected with the input end of the signal selection module, and the output end of the signal selection module is connected with the third communication interface;
the first communication interface is used for receiving a main transmission signal transmitted by the signal transmitting equipment;
the second communication interface is used for receiving a standby transmission signal transmitted by the signal transmitting equipment;
the main signal receiving module is used for converting the main transmission signal into a main video signal;
the standby signal receiving module is used for converting the standby transmission signal into a standby video signal;
the signal selection module is used for selecting the main video signal or the standby video signal and transmitting the selected video signal to front-end display equipment through the third communication interface.
7. The apparatus of claim 6, wherein the main signal receiving module comprises a first signal converting unit and/or a first signal decoding unit;
wherein, if the main transmission signal is an optical fiber signal or an HDBaseT signal, the first signal conversion unit is configured to convert the optical fiber signal or the HDBaseT signal into the main video signal;
if the main transmission signal is a network signal, the first signal decoding unit is configured to decode the network signal into the main video signal.
8. The apparatus of claim 6, wherein the signal transmitting module comprises a second signal converting unit and/or a second signal decoding unit;
wherein, if the standby transmission signal is an optical fiber signal or an HDBaseT signal, the second signal conversion unit is configured to convert the optical fiber signal or the HDBaseT signal into the standby video signal;
if the main transmission signal is a network signal, the second signal decoding unit is configured to decode the network signal into the standby video signal.
9. The apparatus of any one of claims 6-8, further comprising a signal post-processing module, wherein:
the input end of the signal post-processing module is connected with the output end of the signal selection module, and the output end of the signal post-processing module is connected with the third communication interface;
the signal post-processing module is configured to perform post-processing operation on the selected video signal, where the post-processing operation includes at least one of signal format control, image scaling, and image frame rate adjustment.
10. A video signal transmission system, comprising:
the system comprises a video source, a signal transmitting device, a signal receiving device and a front-end display device;
the output end of the video source is connected with the input end of the signal transmitting equipment;
the output end of the signal transmitting equipment is connected with the input end of the signal receiving equipment;
the output end of the signal receiving equipment is connected with the front-end display equipment;
the signal transmitting apparatus comprising the signal transmitting apparatus of any one of claims 1-5;
the signal receiving apparatus comprising the signal receiving apparatus of any one of claims 6-9.
11. A video signal transmission system, comprising:
the system comprises a video source, a signal transmitting device, a main signal switching device, a standby signal switching device, a signal receiving device and a front-end display device;
the output end of the video source is connected with the input end of the signal transmitting equipment;
the first output end of the signal transmitting equipment is connected with the input end of the main signal switching equipment;
the second output end of the signal transmitting equipment is connected with the input end of the standby signal switching equipment;
the output end of the main signal switching equipment and the output end of the standby signal switching equipment are respectively connected with the input end of the signal receiving equipment;
the output end of the signal receiving equipment is connected with the front-end display equipment;
the signal transmitting apparatus comprising the signal transmitting apparatus of any one of claims 1-5;
the signal receiving apparatus comprising the signal receiving apparatus of any one of claims 6-9.
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| CN201621246254.2U CN206251099U (en) | 2016-11-17 | 2016-11-17 | A kind of signal transmitting equipment, signal receiver and video signal transmission system |
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