CN113824933A - System and method for satellite broadcast television service - Google Patents
System and method for satellite broadcast television service Download PDFInfo
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- CN113824933A CN113824933A CN202110996778.2A CN202110996778A CN113824933A CN 113824933 A CN113824933 A CN 113824933A CN 202110996778 A CN202110996778 A CN 202110996778A CN 113824933 A CN113824933 A CN 113824933A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/4302—Content synchronisation processes, e.g. decoder synchronisation
- H04N21/4307—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen
- H04N21/43072—Synchronising the rendering of multiple content streams or additional data on devices, e.g. synchronisation of audio on a mobile phone with the video output on the TV screen of multiple content streams on the same device
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/04—Synchronising
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Abstract
The present invention relates to a method for satellite broadcast television service, comprising, S1, a receiving module receiving broadcast television digital signals from a satellite; s2, converting the digital signal into a real-time image picture by a conversion module; s3, the display module plays the real-time image picture at the user terminal, wherein, when playing the picture, the detection module detects the image picture display information and sends the detected image picture display information to the control module, the control module judges whether the signal receiving circuit needs to be switched according to the detected image picture display information, after the judgment is finished, the control module generates a signal receiving circuit switching instruction and sends the instruction to the circuit switching module, and the circuit switching module carries out corresponding action according to the received instruction.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a system and a method for satellite broadcast television service.
Background
At present, a digital television satellite system is still a unidirectional digital signal transmission service, and when a signal is played, the problems of poor picture display condition, unsynchronized sound and picture, blockage and the like caused by insufficient signal intensity exist.
Disclosure of Invention
To this end, the present invention provides an apparatus and method for satellite broadcast television service. The method is used for solving the problems of poor picture display condition, unsynchronized sound and picture, unsmooth blocking and the like caused by insufficient signal intensity in the prior art.
To achieve the above objects, the present invention provides a method for satellite broadcast television service, comprising,
s1, the receiving module receives the broadcast television digital signal from the satellite;
s2, converting the digital signal into a real-time image picture by a conversion module;
s3, the display module plays the real-time image picture at the user terminal, wherein, when playing the picture, the detection module detects the image picture display information and sends the detected image picture display information to the control module, the control module judges whether the signal receiving circuit needs to be switched according to the detected image picture display information, after the judgment is finished, the control module generates a signal receiving circuit switching instruction and sends the instruction to the circuit switching module, and the circuit switching module carries out corresponding action according to the received instruction;
when the picture is played, the control module compares the actual frame rate R of the picture with a preset frame rate R0 and judges whether the signal intensity meets the standard according to the comparison result, the control module compares the frame rate difference A with a preset standard frame rate difference A0 and judges whether the signal intensity meets the standard again according to the comparison result, when the control module judges that the signal intensity meets the standard, the actual sound-picture synchronization degree D of the picture is compared with a preset standard sound-picture synchronization degree D0 and judges whether the signal receiving circuit needs to be switched according to the comparison result, when the control module judges that the signal receiving circuit needs to be switched, the control module generates a switching signal receiving circuit instruction and sends the instruction to the circuit switching module, and the circuit switching module switches the signal receiving circuit according to the received instruction.
Further, when playing the picture, the detection module detects the actual frame rate R of the picture and sends the detection result to the control module, the control module compares the actual frame rate R with the preset frame rate R0 and determines whether the signal strength meets the standard according to the comparison result, and when determining that the signal strength does not meet the standard, the control module determines that the signal strength meets the standard;
the control module is provided with a first preset frame rate R1 and a second preset frame rate R2, wherein R1 is less than R2;
if R is less than R1, the control module judges that the signal strength does not meet the standard, the control module generates a switching signal receiving circuit instruction and sends the instruction to the circuit switching module, and the circuit switching module switches the signal receiving circuit according to the received instruction;
if R1 is not less than R2, the control module determines that the frame rate difference needs to be combined to determine whether the signal strength meets the standard;
if R > R2, the control module determines that the signal strength meets a criterion.
Further, when the control module determines that the frame rate difference a needs to be combined to determine whether the signal strength meets the standard, the control module calculates the frame rate difference a and compares the frame rate difference a with the standard frame rate difference a0 to determine whether the signal strength meets the standard, and when the control module determines that the signal strength does not meet the standard;
if A is not more than A0, the control module judges that the signal intensity meets the standard;
if A is greater than A0, the control module judges that the signal strength does not meet the standard, the control module generates a switching signal receiving circuit instruction and sends the instruction to the circuit switching module, and the circuit switching module switches the signal receiving circuit according to the received instruction;
when the control module calculates the frame rate difference value a, the calculation formula is as follows:
A＝(R2-R1)×{(R2-R)/(R-R1)}。
further, when the control module determines that the signal strength meets the standard, the detection module detects the sound-picture synchronization degree D of the picture and sends the detection result to the control module, the control module compares the actual sound-picture synchronization degree D with a preset standard sound-picture synchronization degree D0 and determines whether a signal receiving line needs to be switched according to the comparison result, and when the control module determines that the sound-picture synchronization degree does not meet the standard;
if D is less than or equal to D0, the control module judges that the sound-picture synchronization degree meets the standard;
if D is more than D0, the control module judges that the sound-picture synchronization degree does not meet the standard, the control module generates a switching signal receiving line instruction and sends the instruction to the line switching module, and the line switching module switches the signal receiving line according to the received instruction;
when the control module calculates the sound-picture synchronization degree D, the calculation formula is as follows:
D＝|Da-Db|
where Da represents the time of playing the picture and Db represents the time of sound emission when playing the picture.
Further, when the control module judges that the sound-picture synchronization degree meets the standard, the detection module detects the signal fluctuation amplitude Q and sends the detection result to the control module, and the control module compares the actual signal fluctuation amplitude Q with the preset signal fluctuation amplitude Q0 and corrects the sound-picture synchronization degree D according to the comparison result;
the control module is further provided with a first preset signal fluctuation amplitude Q1, a second signal fluctuation amplitude Q2, a third signal fluctuation amplitude Q3, a first voice-picture synchronization correction coefficient alpha 1, a second voice-picture synchronization correction coefficient alpha 2, a third voice-picture synchronization correction coefficient alpha 3 and a fourth voice-picture synchronization correction coefficient alpha 4, wherein Q1 is more than Q2 and less than Q3, alpha 1 is more than alpha 2 and less than alpha 3 and less than alpha 4, and alpha 1+ alpha 2+ alpha 3+ alpha 4 is equal to 1;
if Q is less than Q1, the control module selects a first sound-picture synchronization correction coefficient alpha 1 to correct the sound-picture synchronization;
if Q1 is not more than Q < Q2, the control module selects a second sound picture synchronization correction coefficient alpha 2 to correct the sound picture synchronization;
if Q2 is not more than Q and is less than Q3, the control module selects a third sound-picture synchronization correction coefficient alpha 3 to correct the sound-picture synchronization;
if Q is larger than or equal to Q3, the control module selects a fourth sound picture synchronization correction coefficient alpha 4 to correct the sound picture synchronization;
and the control module records the corrected sound-picture synchronization degree as Da and sets Da as D multiplied by alpha i, i as 1,2,3 and 4.
Further, when playing the picture, the detection module detects the actual received signal frequency P received by the receiving module and sends the detection result to the control module, and the control module corrects the actual frame rate according to the actual received signal frequency P and the picture;
the control module is further preset with a receiving signal frequency and a frame rate correction coefficient, where the preset receiving signal frequency includes a first receiving signal frequency P1, a second receiving signal frequency P2, a third receiving signal frequency P3, a first frame rate correction coefficient β 1, a second frame rate correction coefficient β 2, a third frame rate correction coefficient β 3, and a fourth frame rate correction coefficient β 4, where P1 < P2 < P3 β 1 < β 2 < β 3 < β 4, and β 1+ β 2+ β 3+ β 4 is 1;
if P is less than P1, the control module selects a first frame rate correction coefficient beta 1 to correct the actual frame rate;
if P1 is not more than P < P2, the control module selects a second frame rate correction coefficient beta 2 to correct the actual frame rate;
if P2 is not more than P < P3, the control module selects a third frame rate correction coefficient beta 3 to correct the actual frame rate;
and if the P is more than or equal to P3, the control module selects a fourth frame rate correction coefficient beta 4 to correct the actual frame rate.
Further, the control module records the corrected actual frame rate as Ra, and when the control module selects the i-th frame rate correction coefficient β i to correct the actual frame rate, sets i to 1,2,3, 4, and records the corrected actual frame rate as Ra;
when i is 1, Ra is set to P × { P/(P1-P) } × β i;
when i is 2, Ra is set to P { (P2-P)/(P-P1) } × β i;
when i is 3, Ra is set to P { (P3-P)/(P-P2) } × β i;
when i is 4, Ra is P { (P-P3)/P3} × β i.
Further, an apparatus for satellite broadcast television service, comprising,
the receiving module is used for receiving satellite signals;
the conversion module is used for converting the received satellite signals into television signals;
the display module is used for playing the television signal to the user terminal;
and the control module comprises a detection module and a line switching module and is used for controlling the device to operate.
Compared with the prior art, the invention has the advantages that the control module compares the actual frame rate R of the picture with the preset frame rate R0 and judges whether the signal intensity meets the standard according to the comparison result, the frame rate difference A is compared with the preset standard frame rate difference A0 and judges whether the signal intensity meets the standard again according to the comparison result, the actual sound-picture synchronization degree D of the picture is compared with the preset standard sound-picture synchronization degree D0 and judges whether the signal receiving circuit needs to be switched according to the comparison result, when the control module judges that the signal receiving circuit needs to be switched, the control module generates a switching signal receiving circuit instruction and sends the switching signal receiving circuit instruction to the circuit switching module, and the circuit switching module switches the signal receiving circuit according to the received instruction.
Furthermore, when the satellite television is used for picture playing, the control module comprehensively judges the signal intensity and the playing picture quality through the preset frame rate R0, the preset standard frame rate difference A0 and the preset standard sound-picture synchronization D0, different signal receiving circuits can be selected according to actual conditions in the picture playing process, circuit switching can be intelligently performed, meanwhile, the watching quality is improved through switching the signal receiving circuits, the user experience is improved, and the service quality of the satellite television is further improved.
Furthermore, when the picture is played, the detection module detects the actual frame rate R of the picture and sends the actual frame rate R to the control module, the control module compares the actual frame rate R with the preset frame rate R0 and judges whether the signal intensity meets the standard according to the comparison result, the signal intensity condition can be accurate through the judgment of the picture frame rate, the control module can intelligently switch signal receiving circuits according to the actual signal intensity, and meanwhile, through switching the signal receiving circuits, the watching quality is improved, the user experience is improved, and the service quality of the satellite television is further improved.
Further, when picture playing is carried out, when the control module judges that the frame rate difference value A needs to be combined to judge whether the signal strength meets the standard, the control module calculates the frame rate difference value A and compares the difference value with a standard frame rate difference value to judge whether the signal strength meets the standard, when the control module cannot judge the signal strength from the frame rate, the control module further judges the signal strength by combining the frame rate difference value, so that the signal strength condition can be accurate, the control module can intelligently switch signal receiving circuits according to the actual signal strength, meanwhile, the watching quality is improved by switching the signal receiving circuits, the user experience is improved, and the service quality of the satellite television is further improved.
Further, when the control module judges that the signal strength meets the standard, the detection module detects the sound-picture synchronization degree D of the picture and sends the detection result to the control module, the control module compares the actual sound-picture synchronization degree D with the preset standard sound-picture synchronization degree D0 and judges whether the signal receiving circuit needs to be switched according to the comparison result, the picture playing situation can be accurately mastered through the judgment of the sound-picture synchronization degree, when the serious sound-picture asynchronization situation occurs, the control module can intelligently switch the signal receiving circuit, meanwhile, the watching quality is improved through the switching of the signal receiving circuit, the user experience is improved, and the service quality of the satellite television is further improved.
Further, when the control module judges that the sound picture synchronization degree meets the standard, the detection module detects the signal fluctuation amplitude Q and sends the detection result to the control module, the control module compares the actual signal fluctuation amplitude Q with the preset signal fluctuation amplitude Q0 and corrects the sound picture synchronization degree D according to the comparison result, the sound picture synchronization degree can be accurately corrected by mastering the signal fluctuation condition, the signal receiving circuit can be intelligently switched by judging the corrected sound picture synchronization degree, meanwhile, the watching quality is improved by switching the signal receiving circuit, the user experience is improved, and the service quality of the satellite television is further improved.
Furthermore, when the picture is played, the detection module detects the actual received signal frequency P received by the receiving module and sends the detection result to the control module, the control module compares the actual received signal frequency P with the preset received signal frequency and corrects the actual frame rate according to the comparison result, the signal intensity can be more accurately controlled, the signal receiving circuit can be more intelligently switched, meanwhile, the watching quality is improved, the user experience is improved, and the service quality of the satellite television is further improved.
Drawings
Fig. 1 is a schematic flow chart of a method for satellite broadcast television service according to the present invention;
fig. 2 is a schematic structural diagram of a method for satellite broadcast television service according to the present invention.
Detailed Description
In order that the objects and advantages of the invention will be more clearly understood, the invention is further described below with reference to examples; it should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
Preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only for explaining the technical principle of the present invention, and do not limit the scope of the present invention.
It should be noted that in the description of the present invention, the terms of direction or positional relationship indicated by the terms "upper", "lower", "left", "right", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, which are only for convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present invention.
Furthermore, it should be noted that, in the description of the present invention, unless otherwise explicitly specified or limited, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; can be mechanically or electrically connected; they may be connected directly or indirectly through intervening media, or they may be interconnected between two elements. The specific meanings of the above terms in the present invention can be understood by those skilled in the art according to specific situations.
Referring to fig. 1, a method for satellite broadcast television service according to an embodiment of the present invention includes,
s1, the receiving module receives the broadcast television digital signal from the satellite;
s2, converting the digital signal into a real-time image picture by a conversion module;
s3, the display module plays the real-time image picture at the user terminal, wherein, when playing the picture, the detection module detects the image picture display information and sends the detected image picture display information to the control module, the control module judges whether the signal receiving circuit needs to be switched according to the detected image picture display information, after the judgment is finished, the control module generates a signal receiving circuit switching instruction and sends the instruction to the circuit switching module, and the circuit switching module carries out corresponding action according to the received instruction;
when the picture is played, the control module compares the actual frame rate R of the picture with a preset frame rate R0 and judges whether the signal intensity meets the standard according to the comparison result, compares the frame rate difference A with a preset standard frame rate difference A0 and judges whether the signal intensity meets the standard again according to the comparison result, if the signal intensity meets the standard, compares the actual sound-picture synchronization D of the picture with a preset standard sound-picture synchronization D0 and judges whether the signal receiving circuit needs to be switched according to the comparison result, when the control module judges that the signal receiving circuit needs to be switched, the control module generates a switching signal receiving circuit instruction and sends the switching signal receiving circuit instruction to the circuit switching module, and the circuit switching module switches the signal receiving circuit according to the received instruction.
Specifically, when the satellite television is used for picture playing, the control module comprehensively judges the signal intensity and the playing picture quality through the preset frame rate R0, the preset standard frame rate difference A0 and the preset standard sound-picture synchronization D0, different signal receiving circuits can be selected according to actual conditions in the picture playing process, circuit switching can be intelligently performed, meanwhile, the watching quality is improved through switching the signal receiving circuits, the user experience is improved, and the service quality of the satellite television is further improved.
Specifically, when picture playing is performed, the detection module detects an actual frame rate R of a picture and sends a detection result to the control module, the control module compares the actual frame rate R with a preset frame rate R0 and determines whether signal strength meets a standard according to the comparison result, when the control module determines that the signal strength does not meet the standard, the control module generates a signal receiving line switching instruction and sends the instruction to the line switching module, and the line switching module switches a signal receiving line according to the received instruction;
the control module is provided with a preset frame rate R0, and comprises a first preset frame rate R1 and a second preset frame rate R2, wherein R1 is more than R2;
if R is less than R1, the control module judges that the signal intensity does not meet the standard;
if R1 is not less than R2, the control module determines that the frame rate difference needs to be combined to determine whether the signal strength meets the standard;
if R > R2, the control module determines that the signal strength meets a criterion.
Specifically, when a picture is played, the detection module detects the actual frame rate R of the picture and sends the actual frame rate R to the control module, the control module compares the actual frame rate R with the preset frame rate R0 and judges whether the signal intensity meets the standard according to the comparison result, the signal intensity condition can be accurate through the judgment of the picture frame rate, the control module can intelligently switch signal receiving circuits according to the actual signal intensity, and meanwhile, through switching the signal receiving circuits, the watching quality is improved, the user experience is improved, and the service quality of the satellite television is further improved.
Specifically, when the control module determines that the frame rate difference value a needs to be combined to determine whether the signal strength meets the standard, the control module calculates the frame rate difference value a and compares the frame rate difference value with a standard frame rate difference value to determine whether the signal strength meets the standard, when the control module determines that the signal strength does not meet the standard, the control module generates a signal receiving line switching instruction and sends the instruction to the line switching module, and the line switching module switches the signal receiving line according to the received instruction;
if A is not more than A0, the control module judges that the signal intensity meets the standard;
if A is greater than A0, the control module determines that the signal strength does not meet the criteria;
when the control module calculates the frame rate difference value a, the calculation formula is as follows:
A＝(R2-R1)×{(R2-R)/(R-R1)}
where R denotes an actual frame rate, Ri denotes an ith preset frame rate, and i is 1, 2.
Specifically, when picture playing is performed, when the control module determines that whether the signal strength meets the standard by combining with the frame rate difference value a, the control module calculates the frame rate difference value a and compares the frame rate difference value with a standard frame rate difference value to determine whether the signal strength meets the standard, when the control module cannot determine the signal strength from the frame rate, the control module further determines the signal strength by combining with the frame rate difference value, so that the signal strength condition can be accurate, the control module can intelligently switch signal receiving circuits according to the actual signal strength, and meanwhile, by switching the signal receiving circuits, the viewing quality is improved, the user experience is improved, and the service quality of the satellite television is further improved.
Specifically, when the control module determines that the signal strength meets the standard, the detection module detects the sound-picture synchronization degree D of the picture and sends the detection result to the control module, the control module compares the actual sound-picture synchronization degree D with a preset standard sound-picture synchronization degree D0 and determines whether a signal receiving line needs to be switched according to the comparison result, when the control module determines that the sound-picture synchronization degree does not meet, the control module generates a signal receiving line switching instruction and sends the instruction to the line switching module, and the line switching module switches the signal receiving line according to the received instruction;
if D is less than or equal to D0, the control module judges that the sound-picture synchronization degree meets the standard;
if D is larger than D0, the control module judges that the sound-picture synchronization degree does not meet the standard;
when the control module calculates the sound-picture synchronization degree D, the calculation formula is as follows:
D＝|Da-Db|
where Da represents the time of playing the picture and Db represents the time of sound emission when playing the picture.
Particularly, when the control module judges that the signal strength meets the standard, the detection module detects the sound-picture synchronization degree D of the picture and sends the detection result to the control module, the control module compares the actual sound-picture synchronization degree D with the preset standard sound-picture synchronization degree D0 and judges whether the signal receiving circuit needs to be switched according to the comparison result, the picture playing situation can be accurately mastered through the judgment of the sound-picture synchronization degree, when the serious sound-picture asynchronization situation occurs, the control module can intelligently switch the signal receiving circuit, meanwhile, the watching quality is improved through the switching of the signal receiving circuit, the user experience is improved, and the service quality of the satellite television is further improved.
Specifically, when the control module judges that the sound-picture synchronization degree meets the standard, the detection module detects the signal fluctuation amplitude Q and sends the detection result to the control module, and the control module compares the actual signal fluctuation amplitude Q with the preset signal fluctuation amplitude Q0 and corrects the sound-picture synchronization degree D according to the comparison result;
the control module is further provided with a preset signal fluctuation amplitude Q0 which comprises a first preset signal fluctuation amplitude Q1, a second signal fluctuation amplitude Q2, a third signal fluctuation amplitude Q3, a first voice-picture synchronization correction coefficient alpha 1, a second voice-picture synchronization correction coefficient alpha 2, a third voice-picture synchronization correction coefficient alpha 3 and a fourth voice-picture synchronization correction coefficient alpha 4, wherein Q1 is more than Q2 and less than Q3, alpha 1 is more than alpha 2 and less than alpha 3 and is more than alpha 4, and alpha 1+ alpha 2+ alpha 3+ alpha 4 is 1;
if Q is less than Q1, the control module selects a first sound-picture synchronization correction coefficient alpha 1 to correct the sound-picture synchronization;
if Q1 is not more than Q < Q2, the control module selects a second sound picture synchronization correction coefficient alpha 2 to correct the sound picture synchronization;
if Q2 is not more than Q and is less than Q3, the control module selects a third sound-picture synchronization correction coefficient alpha 3 to correct the sound-picture synchronization;
if Q is larger than or equal to Q3, the control module selects a fourth sound picture synchronization correction coefficient alpha 4 to correct the sound picture synchronization;
and the control module records the corrected sound-picture synchronization degree as Da and sets Da as D multiplied by alpha i, i as 1,2,3 and 4.
Particularly, when the control module judges that the sound picture synchronization degree meets the standard, the detection module detects the signal fluctuation amplitude Q and sends the detection result to the control module, the control touch prize compares the actual signal fluctuation amplitude Q with the preset signal fluctuation amplitude Q0 and corrects the sound picture synchronization degree D according to the comparison result, the sound picture synchronization degree can be accurately corrected by mastering the signal fluctuation condition, the signal receiving circuit can be intelligently switched by judging the corrected sound picture synchronization degree, meanwhile, the watching quality is improved by switching the signal receiving circuit, the user experience is improved, and the service quality of the satellite television is further improved.
Specifically, when playing a picture, the detection module detects an actual received signal frequency P received by the receiving module and sends a detection result to the control module, and the control module compares the actual received signal frequency P with a preset received signal frequency and corrects an actual frame rate according to the comparison result;
the control module is further preset with a receiving signal frequency and a frame rate correction coefficient, wherein the preset receiving signal frequency comprises a first receiving signal frequency P1, a second receiving signal frequency P2 and a third receiving signal frequency P3, and P1 is greater than P2 and P3; the frame rate correction coefficient comprises a first frame rate correction coefficient beta 1, a second frame rate correction coefficient beta 2, a third frame rate correction coefficient beta 3 and a fourth frame rate correction coefficient beta 4, wherein beta 1 is more than beta 2 and less than beta 3 and less than beta 4, and beta 1+ beta 2+ beta 3+ beta 4 is equal to 1;
if P is less than P1, the control module selects a first frame rate correction coefficient beta 1 to correct the actual frame rate;
if P1 is not more than P < P2, the control module selects a second frame rate correction coefficient beta 2 to correct the actual frame rate;
if P2 is not more than P < P3, the control module selects a third frame rate correction coefficient beta 3 to correct the actual frame rate;
and if the P is more than or equal to P3, the control module selects a fourth frame rate correction coefficient beta 4 to correct the actual frame rate.
Specifically, when picture playing is carried out, the detection module detects the actual received signal frequency P received by the receiving module and sends a detection result to the control module, the control module compares the actual received signal frequency P with the preset received signal frequency and corrects the actual frame rate according to the comparison result, the signal intensity can be more accurately controlled, a signal receiving circuit can be more intelligently switched, meanwhile, through switching the signal receiving circuit, the watching quality is improved, the user experience is improved, and the service quality of the satellite television is further improved.
Specifically, when the control module records the corrected actual frame rate as Ra and determines that the frame rate correction coefficient is β i, the control module calculates the corrected actual frame rate Ra, sets i to 1,2,3, 4,
when i is 1, Ra is set to P × { P/(P1-P) } × β 1;
when i is 2, Ra is set to P { (P2-P)/(P-P1) } × β 2;
when i is 3, Ra is set to P { (P3-P)/(P-P2) } × β 3;
when i is 4, Ra ═ P { (P-P3)/P3} × β 4;
where P denotes an actual received signal frequency, Pj denotes a j-th preset received signal frequency, and j is set to 1,2, and 3.
And more particularly, to an apparatus for satellite broadcast television services, comprising,
the receiving module is used for receiving satellite signals;
the conversion module is used for converting the received satellite signals into television signals;
the display module is used for playing the television signal to the user terminal;
and the control module comprises a detection module and a line switching module and is used for controlling the device to operate.
So far, the technical solutions of the present invention have been described in connection with the preferred embodiments shown in the drawings, but it is easily understood by those skilled in the art that the scope of the present invention is obviously not limited to these specific embodiments. Equivalent changes or substitutions of related technical features can be made by those skilled in the art without departing from the principle of the invention, and the technical scheme after the changes or substitutions can fall into the protection scope of the invention.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention; various modifications and alterations to this invention will become apparent to those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (8)
1. A method for satellite broadcast television services, comprising,
s1, the receiving module receives the broadcast television digital signal from the satellite;
s2, converting the digital signal into a real-time image picture by a conversion module;
s3, the display module plays the real-time image picture at the user terminal, wherein, when playing the picture, the detection module detects the image picture display information and sends the detected image picture display information to the control module, the control module judges whether the signal receiving circuit needs to be switched according to the detected image picture display information, after the judgment is finished, the control module generates a signal receiving circuit switching instruction and sends the instruction to the circuit switching module, and the circuit switching module carries out corresponding action according to the received instruction;
when the picture is played, the control module compares the actual frame rate R of the picture with a preset frame rate R0 and judges whether the signal intensity meets the standard according to the comparison result, the control module compares the frame rate difference A with a preset standard frame rate difference A0 and judges whether the signal intensity meets the standard again according to the comparison result, when the control module judges that the signal intensity meets the standard, the actual sound-picture synchronization degree D of the picture is compared with a preset standard sound-picture synchronization degree D0 and judges whether the signal receiving circuit needs to be switched according to the comparison result, when the control module judges that the signal receiving circuit needs to be switched, the control module generates a switching signal receiving circuit instruction and sends the instruction to the circuit switching module, and the circuit switching module switches the signal receiving circuit according to the received instruction.
2. The method as claimed in claim 1, wherein when the picture is played, the detection module detects an actual frame rate R of the picture and sends the detection result to the control module, the control module compares the actual frame rate R with a preset frame rate R0 and determines whether the signal strength meets the standard according to the comparison result, and when the control module determines that the signal strength does not meet the standard;
the control module is provided with a first preset frame rate R1 and a second preset frame rate R2, wherein R1 is less than R2;
if R is less than R1, the control module judges that the signal strength does not meet the standard, the control module generates a switching signal receiving circuit instruction and sends the instruction to the circuit switching module, and the circuit switching module switches the signal receiving circuit according to the received instruction;
if R1 is not less than R2, the control module determines that the frame rate difference needs to be combined to determine whether the signal strength meets the standard;
if R > R2, the control module determines that the signal strength meets a criterion.
3. The method as claimed in claim 2, wherein when the control module determines that the frame rate difference a is required to be combined to determine whether the signal strength meets the standard, the control module calculates the frame rate difference a and compares the frame rate difference a with a standard frame rate difference a0 to determine whether the signal strength meets the standard, and when the control module determines that the signal strength does not meet the standard;
if A is not more than A0, the control module judges that the signal intensity meets the standard;
if A is greater than A0, the control module judges that the signal strength does not meet the standard, the control module generates a switching signal receiving circuit instruction and sends the instruction to the circuit switching module, and the circuit switching module switches the signal receiving circuit according to the received instruction;
when the control module calculates the frame rate difference value a, the calculation formula is as follows:
A＝(R2-R1)×{(R2-R)/(R-R1)}。
4. the method according to claim 3, wherein when the control module determines that the signal strength meets the standard, the detection module detects the sound-picture synchronization degree D of the picture and sends the detection result to the control module, the control module compares the actual sound-picture synchronization degree D with a preset standard sound-picture synchronization degree D0 and determines whether the signal receiving line needs to be switched according to the comparison result, and when the control module determines that the sound-picture synchronization degree does not meet the standard;
if D is less than or equal to D0, the control module judges that the sound-picture synchronization degree meets the standard;
if D is more than D0, the control module judges that the sound-picture synchronization degree does not meet the standard, the control module generates a switching signal receiving line instruction and sends the instruction to the line switching module, and the line switching module switches the signal receiving line according to the received instruction;
when the control module calculates the sound-picture synchronization degree D, the calculation formula is as follows:
D＝|Da-Db|
where Da represents the time of playing the picture and Db represents the time of sound emission when playing the picture.
5. The method according to claim, wherein when the control module determines that the sound-picture synchronization degree meets the standard, the detection module detects the signal fluctuation amplitude Q and sends the detection result to the control module, and the control module compares the actual signal fluctuation amplitude Q with a preset signal fluctuation amplitude Q0 and corrects the sound-picture synchronization degree D according to the comparison result;
the control module is further provided with a first preset signal fluctuation amplitude Q1, a second signal fluctuation amplitude Q2, a third signal fluctuation amplitude Q3, a first voice-picture synchronization correction coefficient alpha 1, a second voice-picture synchronization correction coefficient alpha 2, a third voice-picture synchronization correction coefficient alpha 3 and a fourth voice-picture synchronization correction coefficient alpha 4, wherein Q1 is more than Q2 and less than Q3, alpha 1 is more than alpha 2 and less than alpha 3 and less than alpha 4, and alpha 1+ alpha 2+ alpha 3+ alpha 4 is equal to 1;
if Q is less than Q1, the control module selects a first sound-picture synchronization correction coefficient alpha 1 to correct the sound-picture synchronization;
if Q1 is not more than Q < Q2, the control module selects a second sound picture synchronization correction coefficient alpha 2 to correct the sound picture synchronization;
if Q2 is not more than Q and is less than Q3, the control module selects a third sound-picture synchronization correction coefficient alpha 3 to correct the sound-picture synchronization;
if Q is larger than or equal to Q3, the control module selects a fourth sound picture synchronization correction coefficient alpha 4 to correct the sound picture synchronization;
and the control module records the corrected sound-picture synchronization degree as Da and sets Da as D multiplied by alpha i, i as 1,2,3 and 4.
6. The method according to claim 5, wherein the detection module detects an actual received signal frequency P received by the receiving module and sends the detection result to the control module when playing the picture, and the control module modifies an actual frame rate according to the actual received signal frequency P and the picture;
the control module is further preset with a receiving signal frequency and a frame rate correction coefficient, where the preset receiving signal frequency includes a first receiving signal frequency P1, a second receiving signal frequency P2, a third receiving signal frequency P3, a first frame rate correction coefficient β 1, a second frame rate correction coefficient β 2, a third frame rate correction coefficient β 3, and a fourth frame rate correction coefficient β 4, where P1 < P2 < P3 β 1 < β 2 < β 3 < β 4, and β 1+ β 2+ β 3+ β 4 is 1;
if P is less than P1, the control module selects a first frame rate correction coefficient beta 1 to correct the actual frame rate;
if P1 is not more than P < P2, the control module selects a second frame rate correction coefficient beta 2 to correct the actual frame rate;
if P2 is not more than P < P3, the control module selects a third frame rate correction coefficient beta 3 to correct the actual frame rate;
and if the P is more than or equal to P3, the control module selects a fourth frame rate correction coefficient beta 4 to correct the actual frame rate.
7. The method according to claim 6, wherein the control module records the corrected actual frame rate as Ra, and when the control module selects an i-th frame rate correction coefficient β i to correct the actual frame rate, sets i to 1,2,3, 4, and records the corrected actual frame rate as Ra;
when i is 1, Ra is set to P × { P/(P1-P) } × β i;
when i is 2, Ra is set to P { (P2-P)/(P-P1) } × β i;
when i is 3, Ra is set to P { (P3-P)/(P-P2) } × β i;
when i is 4, Ra is P { (P-P3)/P3} × β i.
8. An apparatus for satellite broadcast television services, comprising,
the receiving module is used for receiving satellite signals;
the conversion module is used for converting the received satellite signals into television signals;
the display module is used for playing the television signal to the user terminal;
and the control module comprises a detection module and a line switching module and is used for controlling the device to operate.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110996778.2A CN113824933A (en) | 2021-08-27 | 2021-08-27 | System and method for satellite broadcast television service |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110996778.2A CN113824933A (en) | 2021-08-27 | 2021-08-27 | System and method for satellite broadcast television service |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116419035A (en) * | 2023-06-09 | 2023-07-11 | 深圳市华曦达科技股份有限公司 | Video playing detection method, device, equipment and computer readable storage medium |
| CN117061490A (en) * | 2023-10-11 | 2023-11-14 | 广东保伦电子股份有限公司 | Dual-channel broadcasting method for emergency broadcasting |
-
2021
- 2021-08-27 CN CN202110996778.2A patent/CN113824933A/en not_active Withdrawn
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116419035A (en) * | 2023-06-09 | 2023-07-11 | 深圳市华曦达科技股份有限公司 | Video playing detection method, device, equipment and computer readable storage medium |
| CN116419035B (en) * | 2023-06-09 | 2023-08-22 | 深圳市华曦达科技股份有限公司 | Video playing detection method, device, equipment and computer readable storage medium |
| CN117061490A (en) * | 2023-10-11 | 2023-11-14 | 广东保伦电子股份有限公司 | Dual-channel broadcasting method for emergency broadcasting |
| CN117061490B (en) * | 2023-10-11 | 2024-02-09 | 广东保伦电子股份有限公司 | Dual-channel broadcasting method for emergency broadcasting |
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