CN112153335A - Broadcast television monitor and control method - Google Patents
Broadcast television monitor and control method Download PDFInfo
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- CN112153335A CN112153335A CN202010995441.5A CN202010995441A CN112153335A CN 112153335 A CN112153335 A CN 112153335A CN 202010995441 A CN202010995441 A CN 202010995441A CN 112153335 A CN112153335 A CN 112153335A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/18—Closed-circuit television [CCTV] systems, i.e. systems in which the video signal is not broadcast
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/445—Receiver circuitry for the reception of television signals according to analogue transmission standards for displaying additional information
- H04N5/44504—Circuit details of the additional information generator, e.g. details of the character or graphics signal generator, overlay mixing circuits
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/76—Television signal recording
- H04N5/765—Interface circuits between an apparatus for recording and another apparatus
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Abstract
The embodiment of the invention discloses a broadcast television monitor and a control method. A broadcast television monitor comprising: the device comprises a first signal input module, a second signal input module, a third signal input module, a signal conversion module, a first processing module, a second processing module and an output module; the first signal input module is connected with the signal conversion module, the second signal input module is connected with the first processing module, and the third signal input module is connected with the second processing module; the signal conversion module, the first processing module, the second processing module and the output module are connected in sequence. A plurality of signal input modules are added, the input of multi-channel audio and video source signals can be received, the problems that a broadcast television monitor is single in signal receiving and single in function are solved, the broadcast television monitor has the functions of a monitor and a television at the same time, the sound and picture effect displayed at a user side after a shooting picture is modulated can be seen, and the application range effect of the broadcast television monitor is enlarged.
Description
Technical Field
The embodiment of the invention relates to a display device technology, in particular to a broadcast television monitor and a control method.
Background
The broadcast-grade monitor is a high-definition and high-brightness professional display, and provides professional-level screen display and extreme visual angles for the photographic industries such as broadcast television shooting, movie shooting, advertisement shooting, wedding shooting and the like.
At present, the function of a broadcast television monitor is single, the broadcast television monitor is purely used as a special display device, if a worker wants to see the effect of a user end after picture modulation or the effect of sound and picture played to the user end by a network, another television needs to be found for watching, and the operation is very inconvenient.
Disclosure of Invention
The invention provides a broadcast television monitor and a control method thereof, which are used for realizing that the broadcast television monitor can receive input and process of multi-channel audio and video source signals and has the functions of the monitor and a television.
In a first aspect, an embodiment of the present invention provides a broadcast television monitor, including: the device comprises a first signal input module, a second signal input module, a third signal input module, a signal conversion module, a first processing module, a second processing module and an output module;
the first signal input module is connected with the signal conversion module, the second signal input module is connected with the first processing module, and the third signal input module is connected with the second processing module; the signal conversion module, the first processing module, the second processing module and the output module are connected in sequence;
the first signal input module is used for receiving an externally input analog audio/video signal and transmitting the analog audio/video signal to the signal conversion module;
the signal conversion module is used for converting the analog audio and video signals into first digital audio and video signals and transmitting the first digital audio and video signals to the first processing module;
the second signal input module is used for receiving a second digital audio and video signal and transmitting the second digital audio and video signal to the first processing module;
the first processing module is used for processing the received first digital audio and video signal and the second digital audio and video signal to generate an HDMI output signal and transmitting the HDMI output signal to the second processing module;
the third signal input module is used for receiving a third digital audio/video signal and transmitting the third digital audio/video signal to the second processing module;
the second processing module is used for processing the received second digital audio and video signals and the third digital audio and video signals, separating audio signals and video signals in the first digital audio and video signals, the second digital audio and video signals and the third digital audio and video signals, and respectively transmitting the audio signals and the video signals to the output module for output.
Optionally, the second processing module includes a main control sub-module;
the main control sub-module is used for selecting one of the analog audio and video signal, the second digital audio and video signal and the third digital audio and video signal as a target video signal according to user operation and shielding other video signals;
the main control sub-module is used for selecting one of the analog audio-video signal, the second digital audio-video signal and the third digital audio-video signal as a target audio signal according to user operation and shielding other audio signals.
Optionally, the output module includes an audio output sub-module and a video output sub-module;
the audio output sub-module is used for outputting the audio signal transmitted by the second processing module; the video output submodule is used for outputting the video signal transmitted by the second processing module.
Optionally, the audio output sub-module includes a power amplifier sub-module and a speaker;
and the audio signal transmitted by the second processing module is amplified by the power amplifier submodule and then is played by the loudspeaker.
In a second aspect, an embodiment of the present invention further provides a method for controlling a broadcast television monitor, which is applied to the broadcast television monitor according to the first aspect, and includes:
receiving an input audio and video signal;
processing the received audio and video signals, and separating the audio signals and the video signals;
and respectively transmitting the audio signal and the video signal to an output module for output.
Optionally, the receiving the input audio and video signal includes:
the first signal input module receives analog audio and video signals, the second signal input module receives second digital audio and video signals, and the third signal input module receives third digital audio and video signals.
Optionally, after receiving the input audio and video signal, the method includes:
selecting one video signal from the analog audio/video signal, the second digital audio/video signal and the third digital audio/video signal as a target video signal according to user operation, and shielding other video signals;
and selecting one audio signal from the analog audio-video signal, the second digital audio-video signal and the third digital audio-video signal as a target audio signal according to user operation, and shielding other audio signals.
Optionally, if the analog audio/video signal is selected as a target audio signal and a target video signal; the processing the received audio and video signals and separating the audio signals and the video signals comprises the following steps:
converting the analog audio signal into a first digital audio/video signal through a signal conversion module and transmitting the first digital audio/video signal to a first processing module;
controlling the first processing module to process and generate an HDMI output signal and transmitting the HDMI output signal to the second processing module;
and controlling the second processing module to separate out the audio signal and the video signal in the first digital audio and video signal.
Optionally, if the second digital audio-video signal is selected as the target audio signal and the target video signal; the processing the received audio and video signals and separating the audio signals and the video signals comprises the following steps:
controlling the first processing module to separate an audio signal from a video signal of the second digital audio-video signal;
controlling the first processing module to process the second digital audio and video signal to generate an HDMI output signal and transmitting the HDMI output signal to the second processing module;
directly controlling the second processing module to separate the audio signal and the video signal in the second digital audio-video signal according to the user selection, or controlling the second processing module to process the second digital audio-video signal and then separate the audio signal and the video signal in the second digital audio-video signal
Optionally, if the third digital audio/video signal is selected as a target audio signal and a target video signal; the processing the received audio and video signals and separating the audio signals and the video signals comprises the following steps:
controlling the second processing module to separate an audio signal and a video signal;
and performing sound characteristic processing on the audio signal, and performing image quality processing on the video signal.
The embodiment of the invention can receive the input of multi-channel audio and video source signals by adding a plurality of signal input modules, solves the problems of single signal receiving and single function of a broadcast television monitor, realizes that the broadcast television monitor has the functions of the monitor and the television at the same time, can see the sound and picture effect displayed at a user end after the modulation of the shot picture and enlarges the application range effect of the broadcast television monitor.
Drawings
Fig. 1 is a schematic structural diagram of a tv broadcast monitor according to an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a tv broadcast monitor according to a second embodiment of the present invention;
fig. 3 is a flowchart illustrating a control method of a tv broadcast monitor according to a third embodiment of the present invention;
fig. 4A is a schematic sub-flowchart of a control method of a tv broadcast monitor according to a third embodiment of the present invention;
fig. 4B is a schematic sub-flow chart of another method for controlling a tv broadcast monitor according to a third embodiment of the present invention;
fig. 4C is a schematic sub-flow chart of a control method for a tv broadcast monitor according to a third embodiment of the present invention;
fig. 5 is a flowchart illustrating an audio signal selection method in another control method for a tv broadcast monitor according to a third embodiment of the present invention.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
Example one
Fig. 1 is a schematic structural diagram of a television broadcast monitor according to an embodiment of the present invention, and as shown in fig. 1, a broadcast television monitor includes: a first signal input module 110, a second signal input module 120, a third signal input module 130, a signal conversion module 140, a first processing module 150, a second processing module 160 and an output module 170;
the first signal input module 110 is connected with the signal conversion module 140, the second signal input module 120 is connected with the first processing module 150, and the third signal input module 130 is connected with the second processing module 160; the signal conversion module 140, the first processing module 150, the second processing module 160 and the output module 170 are connected in sequence;
the first signal input module 110 is configured to receive an externally input analog audio/video signal and transmit the analog audio/video signal to the signal conversion module 140;
the signal conversion module 140 is configured to convert the analog audio/video signal into a first digital audio/video signal and transmit the first digital audio/video signal to the first processing module 150;
the second signal input module 120 is configured to receive a second digital audiovisual signal and transmit the second digital audiovisual signal to the first processing module 150;
the first processing module 150 is configured to process the received first digital audio/video signal and the second digital audio/video signal to generate an HDMI (High Definition Multimedia Interface) output signal, and transmit the HDMI output signal to the second processing module 160;
the third signal input module 130 is configured to receive a third digital audio/video signal and transmit the third digital audio/video signal to the second processing module 160;
the second processing module 160 is configured to process the received second digital audio/video signal and the third digital audio/video signal, separate an audio signal and a video signal from the first digital audio/video signal, the second digital audio/video signal, and the third digital audio/video signal, and transmit the audio signal and the video signal to the output module 170 for output.
The first Signal input module 110 receives an analog audio/Video Signal input by an external device and inputs the analog audio/Video Signal to the Signal conversion module 140, wherein the first Signal input module 110 can receive an earphone audio input Signal, a YPbPr (color difference component interface) Signal, a CVBS (Composite Video Broadcast Signal) Signal input, a left and right channel audio Signal input, and the like. The signal conversion module 140 converts the video signal in the analog audio/video signal into an LVDS (Low-Voltage Differential Signaling) signal, and converts the audio signal in the analog audio/video signal into a digital audio I2S (Inter-IC Sound, Integrated Circuit built-in Audio bus) Signal, LVDS Signal and I2The S signal is collectively referred to as a first digital audio-video signal. The first digital audio/video signal is processed by the first processing module 150 and converted to generate an HDMI output signal; the HDMI output signal is separated into an audio signal and a video signal in the second processing module 160, and the audio signal and the video signal are respectively transmitted to the output module 170 for output; wherein, when the audio signal is separated, it is converted into digital audio I2S or an analog audio line out signal.
The second signal input module 120 is a commonly used receiving module for monitoring broadcast television, and can receive second Digital audio/video signals such as SDI (Serial Digital Interface) signals, HDMI input signals, and DP (display Interface) signals, and generate HDMI output signals through conversion by the processing of the first processing module 150; the SDI signal, the HDMI input signal, and the DP signal are characterized in that the audio/video signals are all packed in the data stream, so the first processing module 150 needs to perform audio/video separation on the received signals, then process the signals respectively, and then convert the signals to generate HDMI output signals. The HDMI output signal is transmitted to the second processing module 160 in two situations, wherein, in one of the two situations, the second digital audio/video signal is directly separated into an audio signal and a video signal in the second processing module 160, and the audio signal and the video signal are respectively transmitted to the output module 170 for output, at this time, the broadcast television monitor displays the picture shot by the camera and the recorded sound, thereby realizing the special function of the monitor, and meanwhile, the second digital audio/video signal is not processed by the second processing module 160, so that the sound quality of the audio signal cannot be changed, so that the user can accurately judge the quality of the input sound source, and the adjustment is facilitated to improve the shooting quality; second, the second digital audio/video signal is processed by the second processing module 160, and then the audio/video signal after processing is separated into an audio signal and a video signal, which are respectively transmitted to the output module 170 for output, at this time, the effect of the user side after the modulation of the shooting picture of the camera is displayed by the broadcast television monitor, the effect of quickly viewing the shooting picture at the user side after processing is realized, and the shooting content can be timely adjusted to improve the shooting quality.
The third signal input module 130 is a conventional Television signal input module, and can receive third Digital audio/video signals such as an ATV/DTV (Analog Television/Digital Television) signal, an HDMI input signal, a USB input signal, a cable network input signal, a WIFI input signal, a bluetooth input signal, and the like, and after being processed by the second processing module 160, the third Digital audio/video signals are separated out to be respectively transmitted to the output module 170 for output; the second processing module 160 may perform sound characteristic processing such as tone, timbre, and EQ (Graphics EQ, graphic equalizer) on the audio signal in the input third digital audio signal, so that the user can hear the sound with the best effect. At this time, the broadcast television monitor is used as a common television to display a television picture, and the third signal input module 130 is added, so that the broadcast television monitor has the capability of receiving high-definition television signal input and processing, and the application range of the broadcast television monitor is expanded.
The first processing module 150 is a signal processing unit developed by using FPGA, and may exemplarily adopt chips such as EP3C5E144C8N, EP2C5T144C8N, and AFS600-2FGG 484I. The addition of the first signal input module 110 enables the broadcast television monitor to have the ability to receive analog signal inputs and process analog signals to expand the applicability of the broadcast television monitor. The second processing module 160 is a conventional tv main processing chip, for example, MSD6a848, MT9950, HI3751ARBCV8100M00, etc. may be used, and the second processing module 160 is added to make the broadcast tv monitor have the capability of processing the input signals of the conventional tv.
The embodiment of the invention can receive multi-channel audio and video source signal input, such as various analog audio and video signals, high-definition television signals and the like, by adding the plurality of signal input modules, solves the problems of single signal receiving and single function of the broadcast television monitor, realizes that the broadcast television monitor has the functions of the monitor and the television at the same time, can quickly check the sound and picture effect displayed at a user end after the modulation of the shot picture, timely adjusts the shot content to improve the shooting quality, and enlarges the application range effect of the broadcast television monitor.
Example two
Fig. 2 is a schematic structural diagram of a television broadcast monitor according to a second embodiment of the present invention, as shown in fig. 2, on the basis of the second embodiment, optionally, the second processing module 160 includes a main control sub-module 161;
the main control sub-module 161 is configured to select one of the analog audio/video signal, the second digital audio/video signal and the third digital audio/video signal as a target video signal according to a user operation, and shield other video signals;
the main control sub-module 161 is configured to select one of the analog audio-video signal, the second digital audio-video signal and the third digital audio-video signal as a target audio signal according to a user operation, and shield other audio signals.
The second processing module 160 may be loaded with an android or Linux system, and integrates a main control sub-module 161, where a menu and some intelligent operations of a broadcast television monitor may be implemented. The broadcast television monitor has a plurality of signal input modules, when receiving a plurality of input signals at the same time, the user needs to select the picture and sound to be displayed, so according to the operation of the user, the main control sub-module 161 selects any one video signal from the analog audio-video signal, the second digital audio-video signal and the third digital audio-video signal as the target video signal, and any one audio signal as the target audio signal, and shields other video signals and audio signals.
The application of the broadcast television monitor is different from that of a common multimedia player and is used as special equipment, workers often need to match video pictures with external audio, such as movie shooting, and additional dubbing is needed in post production, so that an audio input source and a video input source are not the same signal source, and various types of audio input sources and video input sources need to be selected; when dubbing, firstly, a proper target video signal is selected for display, and then a target audio signal is selected from a plurality of audio input sources for matching.
Further, the main control sub-module 161 includes a determining unit (not shown) for determining whether the input audio signal is one of an analog audio/video signal, a second digital audio/video signal and a third digital audio/video signal; if the judgment result is yes, the main control sub-module 161 defaults to play the current audio signal; if the judgment result is negative, and multiple audio signals are input, the main control sub-module 161 reads all the audio signals, gives option display on the output module 170, and plays the target audio signal selected by the user according to the selection operation of the user; for example, the current target video signal is an SDI signal in the second digital audio-video signal, the user may select an earphone audio signal in the analog audio-video signal as the target audio signal, and at this time, the main control sub-module 161 shields other input audio signals; if there are multiple audio signals input, and the user does not select, the main control sub-module 161 defaults to play the audio signal of the signal source corresponding to the current target video, for example, if the current target video signal is the SDI signal in the second digital audio-video signal, the audio signal in the SDI signal is defaulted to play.
The user can freely select audio signal and video signal to match as required, and has guaranteed the uniqueness of broadcast audio signal, avoids causing the audio frequency confusion, the mixed and disorderly phenomenon of sound appears. The main control sub-module 161 can automatically identify which audio signals are currently input, and display options on the output module 170 for the user to switch arbitrarily, thereby avoiding tedious debugging operations.
Optionally, the output module 170 includes an audio output sub-module 171 and a video output sub-module 172;
the audio output sub-module 171 is configured to output the audio signal transmitted by the second processing module 160; the video output sub-module 172 is used for outputting the video signal transmitted by the second processing module 160.
The video output sub-module 172 is a high-definition display screen for displaying the processed video and the function menu.
Optionally, the audio output submodule 171 includes a power amplifier submodule 173 and a speaker 174;
the audio signal transmitted by the second processing module 160 is amplified by the power amplifier sub-module 173 and then played through the speaker 174. The power amplifier submodule 173 includes a digital power amplifier submodule (not shown) and an analog power amplifier submodule (not shown), and the digital power amplifier submodule is used for amplifying the digital audio I2And the S signal is amplified and modulated, and the analog power amplification submodule is used for amplifying and modulating the analog audio line out signal.
According to the embodiment of the invention, the target audio signal is selected, the output of various audio signals can be realized only through one power amplifier submodule 173 and one group of loudspeakers 174, the output audio can be freely selected and switched, and the disorder of multi-audio output is avoided.
EXAMPLE III
Fig. 3 is a flowchart of a method for controlling a television broadcast monitor according to a third embodiment of the present invention, where the present embodiment is applicable to a case of a television broadcast monitor including a plurality of signal receiving modules, and the method can be executed by a television broadcast monitor, and specifically includes the following steps:
and step 300, receiving an input audio and video signal.
The first signal input module receives analog audio and video signals, the second signal input module receives second digital audio and video signals, and the third signal input module receives third digital audio and video signals.
The first signal input module can receive earphone audio input signals, YPbPr signals, CVBS signal input, left and right channel audio signal input and the like. The second signal input module may receive a second digital audiovisual signal such as an SDI signal, an HDMI input signal, and a DP signal. The third signal input module is a conventional television signal input module and can receive third digital audio and video signals such as ATV/DTV signals, HDMI input signals, USB input signals, wired network input signals, WIFI input signals, Bluetooth input signals and the like.
Further, after receiving the input audio/video signal, the method further includes steps 310 and 320, specifically:
and 310, selecting one of the analog audio-video signal, the second digital audio-video signal and the third digital audio-video signal as a target video signal according to user operation, and shielding other video signals.
And 320, selecting one audio signal from the analog audio-video signal, the second digital audio-video signal and the third digital audio-video signal as a target audio signal according to user operation, and shielding other audio signals.
The broadcast television monitor is provided with a plurality of signal input modules, when a plurality of input signals are received simultaneously, a user needs to select pictures and sounds to be displayed, so that according to the operation of the user, the main control sub-module selects any one video signal from the analog audio-video signal, the second digital audio-video signal and the third digital audio-video signal as a target video signal and any one audio signal as a target audio signal, and shields other video signals and other audio signals.
And step 400, processing the received audio and video signals, and separating the audio signals and the video signals.
Different processing is performed according to the type of the received signal and the selected target video signal and target audio signal. Wherein the signal processing comprises a signal conversion module for converting the analog signal into a digital signal, a first processing module and a second processing moduleThe two processing modules can separate the received audio and video signals, carry out image quality processing on the video signals, and carry out sound characteristic processing such as tone, EQ and the like on the audio signals to obtain modulated pictures and sound. The first processing module generates an HDMI output signal after processing. The second processing module separates the HDMI output signal into an audio signal and a video signal, and converts the audio signal into a digital audio I when the audio signal is separated2S or an analog audio line out signal.
And 500, respectively transmitting the audio signal and the video signal to an output module for output.
And respectively transmitting the audio signal and the video signal to an audio output submodule and a video output submodule of the output module for output. Wherein, the audio output submodule comprises a digital power amplifier submodule, an analog power amplifier submodule and a loudspeaker, and respectively outputs digital audio I2The S signal and the analog audio line out signal are amplified and modulated and then are emitted through a loudspeaker; the video output submodule can be a high-definition display screen and displays the processed video and the function menu.
On the basis of the above embodiment, three cases can be divided according to the received signals from the three signal receiving modules.
In case of the first situation, if the analog audio/video signal is selected as the target audio signal and the target video signal, step 400 processes the received audio/video signal and separates out the audio signal and the video signal, as shown in fig. 4A:
The signal conversion module converts the video signal in the analog audio/video signal into LVDS signal and converts the audio signal in the analog audio/video signal into digital audio I2S signal, LVDS signal and I2The S signals are collectively called as first digital audio and video signals, and the first digital audio and video signals are transmitted to the first processing module.
The first signal input module is added, so that the broadcast television monitor has the capability of receiving analog signal input and processing analog signals, and the application range of the broadcast television monitor is expanded.
The input first digital audio/video signal is subjected to modulation processing of a monitor special signal through the first processing module, and is converted to generate an HDMI output signal.
And step 413, controlling the second processing module to separate an audio signal and a video signal in the first digital audio/video signal.
The second processing module separates the HDMI output signal into an audio signal and a video signal, and converts the audio signal into a digital audio I when the audio signal is separated2S or an analog audio line out signal.
In case two, if the second digital audio/video signal is selected as the target audio signal and the target video signal, step 400 processes the received audio/video signal and separates out the audio signal and the video signal, as shown in fig. 4B:
and step 421, controlling the first processing module to separate the audio signal from the video signal of the second digital audio-video signal.
The SDI signal, the HDMI input signal, and the DP signal are characterized in that the audio and video signals are all packed in a data stream, so the first processing module needs to perform audio and video separation on the received signals first.
And 422, controlling the first processing module to process the second digital audio and video signal to generate an HDMI output signal and transmitting the HDMI output signal to the second processing module.
The first processing module respectively processes the separated video signal and audio signal, then converts the processed signals into HDMI output signals, and transmits the HDMI output signals to the second processing module.
The HDMI output signal is transmitted to the second processing module under two conditions, wherein one of the two conditions is that the second digital audio and video signal is directly separated from the audio signal and the video signal in the second processing module and is respectively transmitted to the output module for output, at the moment, the broadcast television monitor displays pictures shot by the camera and recorded sounds, so that the special function of the monitor is realized, and meanwhile, the second digital audio and video signal is not processed by the second processing module, so that the sound quality of the audio signal cannot be changed, a user can accurately judge the quality of an input sound source, and the adjustment is facilitated to improve the shooting quality; and secondly, the second digital audio and video signal is processed by the second processing module, the processed audio and video signal is separated into an audio signal and a video signal, the audio signal and the video signal are respectively transmitted to the output module for output, and the effect of the user side after the shooting picture of the camera is modulated is displayed by the broadcast television monitor, so that the effect of quickly checking the shooting picture at the user side after the processing is realized, and the shooting content can be timely adjusted to improve the shooting quality.
In case three, if the third digital audio/video signal is selected as the target audio signal and the target video signal, step 400 processes the received audio/video signal and separates out the audio signal and the video signal, as shown in fig. 4C:
and 431, controlling the second processing module to separate the audio signal and the video signal.
And analyzing and separating the received third digital audio/video signal to obtain a video signal and an audio signal.
The audio signal is subjected to sound characteristic processing such as tone, timbre, and EQ to allow the user to hear the sound with the best effect, and the video signal is subjected to image quality processing to obtain the best image quality for display.
The embodiment of the invention can receive multi-channel audio and video source signal input, such as various analog audio and video signals, high-definition television signals and the like, by adding the plurality of signal input modules, solves the problems of single signal receiving and single function of the broadcast television monitor, realizes that the broadcast television monitor has the functions of the monitor and the television at the same time, can quickly check the sound and picture effect displayed at a user end after the modulation of the shot picture, timely adjusts the shot content to improve the shooting quality, and enlarges the application range effect of the broadcast television monitor.
Further, since the application of the broadcast television monitor is different from that of a general multimedia player, as a dedicated device, a worker often needs to match a video picture with external audio, such as movie shooting, and needs to additionally dub in post-production, so that when dubbing is performed, a target audio signal needs to be selected from a plurality of audio input sources for matching.
As shown in fig. 5, on the basis of the above embodiment, the method further includes an audio signal selection method, and the specific content includes:
and step 610, judging whether the input audio signal is one of an analog audio and video signal, a second digital audio and video signal and a third digital audio and video signal. If yes, go to step 620, otherwise go to step 630.
When multiple input signals are received simultaneously, the received processing modules are different, but only one power amplifier and one sound system can cause the phenomenon of multi-channel audio mixing, the output target audio needs to be determined, and the uniqueness of the played sound is ensured.
If only one path of audio source is input currently, the main control sub-module plays the sound of the current audio source by default. For example: when only SDI signals are input at present, the broadcast television monitor plays SDI signal source videos and simultaneously plays audio analyzed by the SDI signal sources.
When various audio signals are input, a user needs to manually select the audio signals, and at the moment, an audio signal selection menu is displayed on a screen of the output module.
And step 650, playing the target audio signal selected by the user according to the selection operation of the user.
And playing the target audio signal selected by the user according to the selection operation of the user. For example, the current target video signal is an SDI signal in the second digital audio-video signal, the user may select an earphone audio signal in the analog audio-video signal as the target audio signal, and at this time, the main control sub-module shields other input audio signals.
Further, if the user does not select, step 620 is executed to default to play the current audio signal, and the main control sub-module defaults to play the audio signal of the signal source corresponding to the current target video, for example, if the current target video signal is the SDI signal in the second digital audio-video signal, the audio signal in the SDI signal is played by default.
The user can freely select audio signal and video signal to match as required, and has guaranteed the uniqueness of broadcast audio signal, avoids causing the audio frequency confusion, the mixed and disorderly phenomenon of sound appears. The main control sub-module can automatically identify which audio signals are input currently, and provides option display on the output module for users to switch randomly, so that complicated debugging operation is avoided.
It is to be noted that the foregoing is only illustrative of the preferred embodiments of the present invention and the technical principles employed. It will be understood by those skilled in the art that the present invention is not limited to the particular embodiments described herein, but is capable of various obvious changes, rearrangements and substitutions as will now become apparent to those skilled in the art without departing from the scope of the invention. Therefore, although the present invention has been described in greater detail by the above embodiments, the present invention is not limited to the above embodiments, and may include other equivalent embodiments without departing from the spirit of the present invention, and the scope of the present invention is determined by the scope of the appended claims.
Claims (10)
1. A broadcast television monitor, comprising: the device comprises a first signal input module, a second signal input module, a third signal input module, a signal conversion module, a first processing module, a second processing module and an output module;
the first signal input module is connected with the signal conversion module, the second signal input module is connected with the first processing module, and the third signal input module is connected with the second processing module; the signal conversion module, the first processing module, the second processing module and the output module are connected in sequence;
the first signal input module is used for receiving an externally input analog audio/video signal and transmitting the analog audio/video signal to the signal conversion module;
the signal conversion module is used for converting the analog audio and video signals into first digital audio and video signals and transmitting the first digital audio and video signals to the first processing module;
the second signal input module is used for receiving a second digital audio and video signal and transmitting the second digital audio and video signal to the first processing module;
the first processing module is used for processing the received first digital audio and video signal and the second digital audio and video signal to generate an HDMI output signal and transmitting the HDMI output signal to the second processing module;
the third signal input module is used for receiving a third digital audio/video signal and transmitting the third digital audio/video signal to the second processing module;
the second processing module is used for processing the received second digital audio and video signals and the third digital audio and video signals, separating audio signals and video signals in the first digital audio and video signals, the second digital audio and video signals and the third digital audio and video signals, and respectively transmitting the audio signals and the video signals to the output module for output.
2. The broadcast television monitor of claim 1, wherein the second processing module comprises a master sub-module;
the main control sub-module is used for selecting one of the analog audio and video signal, the second digital audio and video signal and the third digital audio and video signal as a target video signal according to user operation and shielding other video signals;
the main control sub-module is used for selecting one of the analog audio-video signal, the second digital audio-video signal and the third digital audio-video signal as a target audio signal according to user operation and shielding other audio signals.
3. The broadcast television monitor of claim 1, wherein the output module includes an audio output sub-module and a video output sub-module;
the audio output sub-module is used for outputting the audio signal transmitted by the second processing module; the video output submodule is used for outputting the video signal transmitted by the second processing module.
4. The broadcast television monitor of claim 3, wherein the audio output sub-module comprises a power amplifier sub-module and a speaker;
and the audio signal transmitted by the second processing module is amplified by the power amplifier submodule and then is played by the loudspeaker.
5. A control method of a broadcast television monitor applied to the broadcast television monitor according to any one of claims 1 to 4, comprising:
receiving an input audio and video signal;
processing the received audio and video signals, and separating the audio signals and the video signals;
and respectively transmitting the audio signal and the video signal to an output module for output.
6. The method of controlling a broadcast television monitor according to claim 5, wherein the receiving of the input audio-visual signal comprises:
the first signal input module receives analog audio and video signals, the second signal input module receives second digital audio and video signals, and the third signal input module receives third digital audio and video signals.
7. The method of controlling a broadcast television monitor according to claim 5, further comprising, after said receiving the input audio-visual signal:
selecting one video signal from the analog audio-video signal, the second digital audio-video signal and the third digital audio-video signal as a target video signal according to user operation, and shielding other video signals;
and selecting one audio signal from the analog audio-video signal, the second digital audio-video signal and the third digital audio-video signal as a target audio signal according to user operation, and shielding other audio signals.
8. The control method of a broadcast television monitor according to claim 7, wherein if the analog audio-video signal is selected as the target audio signal and the target video signal; the processing the received audio and video signals and separating the audio signals and the video signals comprises the following steps:
converting the analog audio signal into a first digital audio/video signal through a signal conversion module and transmitting the first digital audio/video signal to a first processing module;
controlling the first processing module to process and generate an HDMI output signal and transmitting the HDMI output signal to the second processing module;
and controlling the second processing module to separate out the audio signal and the video signal in the first digital audio and video signal.
9. The method of claim 5, wherein if the second digital audiovisual signal is selected as the target audio signal and the target video signal; the processing the received audio and video signals and separating the audio signals and the video signals comprises the following steps:
controlling the first processing module to separate an audio signal from a video signal of the second digital audio-video signal;
controlling the first processing module to process the second digital audio and video signal to generate an HDMI output signal and transmitting the HDMI output signal to the second processing module;
and directly controlling the second processing module to separate the audio signal and the video signal in the second digital audio-video signal according to user selection, or controlling the second processing module to process the second digital audio-video signal and then separating the audio signal and the video signal in the second digital audio-video signal.
10. The method of claim 5, wherein if the third digital audio-video signal is selected as the target audio signal and the target video signal; the processing the received audio and video signals and separating the audio signals and the video signals comprises the following steps:
controlling the second processing module to separate an audio signal and a video signal;
and performing sound characteristic processing on the audio signal, and performing image quality processing on the video signal.
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| CN202010995441.5A CN112153335A (en) | 2020-09-21 | 2020-09-21 | Broadcast television monitor and control method |
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| CN202010995441.5A CN112153335A (en) | 2020-09-21 | 2020-09-21 | Broadcast television monitor and control method |
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