CN108600857B - Method for indicating state of TV signal source and smart television - Google Patents
Method for indicating state of TV signal source and smart television Download PDFInfo
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- CN108600857B CN108600857B CN201810377746.2A CN201810377746A CN108600857B CN 108600857 B CN108600857 B CN 108600857B CN 201810377746 A CN201810377746 A CN 201810377746A CN 108600857 B CN108600857 B CN 108600857B
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- 238000000034 method Methods 0.000 title claims abstract description 21
- 230000008054 signal transmission Effects 0.000 claims abstract description 58
- 230000035945 sensitivity Effects 0.000 claims description 31
- 238000010586 diagram Methods 0.000 description 13
- 238000004590 computer program Methods 0.000 description 7
- 230000006870 function Effects 0.000 description 6
- 238000012986 modification Methods 0.000 description 5
- 230000004048 modification Effects 0.000 description 5
- 230000002159 abnormal effect Effects 0.000 description 2
- 206010063385 Intellectualisation Diseases 0.000 description 1
- 230000004075 alteration Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004973 liquid crystal related substance Substances 0.000 description 1
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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
- H04N21/47—End-user applications
- H04N21/488—Data services, e.g. news ticker
- H04N21/4882—Data services, e.g. news ticker for displaying messages, e.g. warnings, reminders
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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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4382—Demodulation or channel decoding, e.g. QPSK demodulation
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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
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
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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
- H04N21/442—Monitoring of processes or resources, e.g. detecting the failure of a recording device, monitoring the downstream bandwidth, the number of times a movie has been viewed, the storage space available from the internal hard disk
- H04N21/4425—Monitoring of client processing errors or hardware failure
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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
- H04N21/47—End-user applications
- H04N21/482—End-user interface for program selection
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Abstract
The invention relates to the technical field of digital signals, in particular to a method for indicating the state of a TV signal source and an intelligent television, which are used for solving the problems that in the prior art, when no signal exists, a user needs to manually check the state of the TV signal source, the operation is inconvenient and the intelligentization is not facilitated. After the intelligent television is started, a plurality of frequency points corresponding to the currently used television signal transmission system are determined; judging whether a corresponding program signal is a frequency point of an effective signal in a plurality of frequency points; if yes, determining that the TV signal source is in a normal state, and prompting a user in a preset mode. According to the embodiment of the invention, when the intelligent television has no signal problem, if the current intelligent television prompts that the TV signal source is in a normal state, a user does not need to manually check the TV signal source, so that a large amount of time can be saved, and the operation flow is simplified.
Description
Technical Field
The invention relates to the technical field of digital signals, in particular to a method for indicating the state of a TV signal source and an intelligent television.
Background
With the continuous development of television technology, the functions of televisions are more and more complete, and the types of televisions are more and more (for example, liquid crystal televisions, digital televisions). With the continuous refinement of the television functions, the operation of the smart television gradually tends to be humanized.
When a user watches a television program, the user can encounter the situation of no signal, and at the moment, a word of 'no signal' is displayed on a television screen. Furthermore, in order to prevent the screen burn-in problem caused by displaying a still picture for a long time, "no signal" is also presented on the screen of the television in a dynamic floating display mode. In this state, the user either chooses to switch to the next channel or waits; if there is no signal after waiting for a long time or there is no signal after switching channels, the user needs to check the reason of no signal and determine whether the TV signal source is in an abnormal state (e.g., whether the TV signal line is failed). In the prior art, when no signal problem occurs, a user needs to manually check the state of a TV signal source, and the operation is inconvenient and is not beneficial to intellectualization.
Disclosure of Invention
The invention provides a method for indicating the state of a TV signal source and an intelligent television, which are used for solving the problems that in the prior art, when no signal exists, a user needs to manually check the state of the TV signal source, the operation is inconvenient and the intelligentization is not facilitated.
Based on the above problem, in a first aspect, an embodiment of the present invention provides a method for indicating a status of a TV signal source, including:
after the intelligent television is started, determining a plurality of frequency points corresponding to the currently used television signal transmission system;
the intelligent television judges whether the corresponding program signals are the frequency points of the effective signals or not;
and if so, the intelligent television determines that the TV signal source is in a normal state and prompts a user in a preset mode.
In a second aspect, an embodiment of the present invention provides an intelligent television, including:
at least one processing unit and at least one memory unit, wherein the memory unit stores program code that, when executed by the processing unit, causes the processing unit to perform the following:
after the intelligent television is started, determining a plurality of frequency points corresponding to the currently used television signal transmission system; judging whether a corresponding program signal is a frequency point of an effective signal in the plurality of frequency points; if yes, determining that the TV signal source is in a normal state, and prompting a user in a preset mode.
In a third aspect, an embodiment of the present invention further provides a smart television, including:
the determining module is used for determining a plurality of frequency points corresponding to the currently used television signal transmission system after the intelligent television is started;
the judging module is used for judging whether the corresponding program signal in the plurality of frequency points is the frequency point of the effective signal;
and the processing module is used for determining that the TV signal source is in a normal state when the corresponding program signal is the frequency point of the effective signal, and prompting the user in a preset mode.
After the intelligent television is started, the intelligent television can determine a plurality of frequency points according to the currently used television signal transmission system, detect program signals corresponding to the frequency points, determine that a television signal source is in a normal state when the program signals corresponding to the frequency points in the frequency points are effective signals, and prompt a user; the user can determine that the current TV signal source is normal according to the prompt of the intelligent television, and when the intelligent television has no signal problem, if the current intelligent television prompts that the TV signal source is in a normal state, the user does not need to manually check the TV signal source (for example, check whether a television signal line is in a fault or not), so that a large amount of time can be saved, and the operation flow is simplified.
Drawings
FIG. 1 is a flow chart of a method of indicating the status of a TV signal source according to an embodiment of the present invention;
fig. 2 is a schematic view of a navigation interface of an intelligent television according to an embodiment of the present invention;
fig. 3 is a schematic structural diagram of a first smart television according to an embodiment of the present invention;
fig. 4A is a schematic diagram of a signal source menu interface of a first smart television according to an embodiment of the present invention;
fig. 4B is a schematic diagram of a signal source menu interface of a second smart television according to the embodiment of the present invention;
FIG. 5 is an overall flow chart of an embodiment of the present invention for indicating the status of a TV signal source;
fig. 6 is a schematic structural diagram of a second smart television according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a third smart television according to the embodiment of the present invention.
Detailed Description
The method for indicating the state of the TV signal source is applied to the intelligent television. After the intelligent television is started, determining a plurality of frequency points corresponding to the currently used television signal transmission system; the intelligent television judges whether a corresponding program signal is a frequency point of an effective signal in a plurality of frequency points; if yes, the intelligent television determines that the TV signal source is in a normal state, and prompts a user in a preset mode. After the intelligent television is started, the intelligent television can determine a plurality of frequency points according to the currently used television signal transmission system, detect program signals corresponding to the frequency points, determine that a television signal source is in a normal state when the program signals corresponding to the frequency points in the frequency points are effective signals, and prompt a user; the user can determine that the current TV signal source is normal according to the prompt of the intelligent television, and when the intelligent television has no signal problem, if the current intelligent television prompts that the TV signal source is in a normal state, the user does not need to manually check the TV signal source (for example, check whether a television signal line is in a fault or not), so that a large amount of time can be saved, and the operation flow is simplified.
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1, a method for indicating a TV signal source status according to an embodiment of the present invention includes:
102, the smart television judges whether a corresponding program signal in the frequency points is a frequency point of an effective signal;
and 103, if so, the intelligent television determines that the TV signal source is in a normal state and prompts a user in a preset mode.
In the implementation, after the intelligent television is started, the country selected by a user on a navigation interface of the intelligent television is obtained, and a television signal transmission system required to be used is determined according to the country selected by the user;
as shown in the navigation interface of fig. 2, the countries that the smart tv provides to the user can select include china, usa, uk, france, canada, japan, korea, russia.
Wherein, the user can select the country on the navigation interface in the following way:
1. selecting a country through a remote controller;
2. selecting a country by a touch mode aiming at the touch screen smart television;
3. and setting a search window on the navigation interface, and inputting the selected country in the search window by the user.
It should be noted that, the television signal transmission systems corresponding to different countries may be different, so that the television signal transmission system corresponding to the country needs to be determined according to the country selected by the user.
The television signal transmission system which can be used by the intelligent television in the embodiment of the invention includes but is not limited to:
DVB-C standard, DVB-T2 standard, DVB-S2 standard, DVB-S standard and ISDB standard.
In the embodiment of the invention, different television signal transmission systems correspond to different frequency points, and each television signal transmission system corresponds to a plurality of frequency points;
for example, in a part of areas, the frequency point range corresponding to the DVB-C system or DVB-C is 114MHz to 858 MHz; the corresponding frequency point range of the DVB-S/S2 is 950 MHz-2150 MHz.
After the frequency point range corresponding to the television signal transmission system is known, determining the frequency point corresponding to the television signal transmission system according to the bandwidth of the television signal transmission system;
for example, when the frequency point range corresponding to the DVB-T standard is 114MHz to 858 MHz; the bandwidth is 8MHz or 7MHz or 6 MHz; taking 8MHz as an example of bandwidth, frequency points corresponding to the DVB-T system are 114MHz, 122MHz, 130MHz … …, 474MHz, 482MHz and 490MHz … … 858 MHz; the frequency points are 474MHz, 482MHz and 490MHz … … 858 MHz.
After the intelligent television determines a plurality of frequency points corresponding to the currently used television signal transmission system, program signals corresponding to the frequency points are sequentially detected, whether the program signals corresponding to the frequency points are effective signals or not is judged, and when the program signals corresponding to the frequency points in the plurality of frequency points corresponding to the television signal transmission system are determined to be effective signals, the TV signal source is determined to be in a normal state.
It should be noted that, in the embodiment of the present invention, the smart television detects whether the program signal corresponding to each frequency point is an effective signal in sequence, and when the smart television determines that the program signal corresponding to the currently detected frequency point is an effective signal, the smart television can stop detecting the next frequency point, and at this time, it can determine that the TV signal source is in a normal state.
For example, the determining, by the smart television, the frequency point corresponding to the currently used television signal transmission system includes: frequency point 1, frequency point 2, frequency point 3, frequency point 4, frequency point 5, frequency point 6, frequency point 7, frequency point 8, frequency point 9 and frequency point 10; the method comprises the steps that the intelligent television is supposed to detect program signals corresponding to each frequency point in sequence from the frequency point 1, if the program signals corresponding to the frequency point 1 are invalid signals, the intelligent television detects the program signals corresponding to the frequency point 2, if the program signals corresponding to the frequency point 2 are determined to be valid signals, the detection of the program signals corresponding to other frequency points is stopped, and a TV signal source is determined to be in a normal state.
In implementation, for any frequency point, the smart television judges whether a program signal corresponding to the frequency point is an effective signal according to the following mode:
the intelligent television detects the signal intensity value of the program signal corresponding to the frequency point;
if the signal intensity value is larger than the upper limit value of a preset sensitivity interval corresponding to the television signal transmission system, the intelligent television determines that the program signal corresponding to the frequency point is an effective signal;
if the signal intensity value is not greater than the upper limit value and not less than the lower limit value of the preset sensitivity interval, the intelligent television determines the carrier-to-noise ratio of the program signal corresponding to the frequency point; and when the carrier-to-noise ratio is not less than a preset carrier-to-noise ratio threshold corresponding to the television signal transmission system, determining the program signal corresponding to the frequency point as an effective signal.
Optionally, the smart television locks the frequency point through the tuner, and acquires a signal intensity value of the program signal corresponding to the frequency point detected by the tuner.
As shown in fig. 3, the smart tv includes an av processor 30 and at least one tuner 31;
the audio and video processor is used for determining the frequency points to be detected and passing the frequency points to be detected through I2C command notification tuner; tuner locking the frequency to be detectedAnd the audio and video processor judges whether the program signal corresponding to the frequency point is effective information according to the received signal intensity value.
Note that the signal strength value detected by tuner is an RSSI (Received signal strength Indication) value of a frequency point.
In implementation, for different television signal transmission systems, a preset sensitivity interval corresponding to each television signal transmission system is preset, wherein the preset sensitivity interval comprises an upper limit value and a lower limit value;
it should be noted that the preset sensitivity interval corresponding to the television signal transmission system is preset according to experience or protocol of a person skilled in the art.
For example, when the television signal transmission system is DVB-T2, the preset sensitivity interval is-95.6 dBm to-74 dBm; the upper limit value of the preset sensitivity interval is-74 dBm, and the lower limit value of the preset sensitivity interval is-95.6 dBm.
For another example, when the television signal transmission system is DVB-C, the preset sensitivity interval is-69 dBm to-65 dBm; the upper limit value of the preset sensitivity interval is-65 dBm, and the lower limit value of the preset sensitivity interval is-69 dBm.
In implementation, after detecting the signal intensity value of the program signal corresponding to the frequency point, the smart television compares the signal intensity value with a preset sensitivity interval corresponding to a television signal transmission system, and if the signal intensity value is greater than an upper limit value of the preset sensitivity interval, the program signal corresponding to the frequency point is determined to be an effective signal;
if the signal intensity value is smaller than the lower limit value of the preset sensitivity interval, determining the program signal corresponding to the frequency point as an invalid signal;
if the signal intensity value is not greater than the upper limit value of the preset sensitivity interval and not less than the lower limit value of the preset sensitivity interval, the intelligent television further determines the carrier-to-noise ratio of the program signal corresponding to the frequency point, and determines the program signal corresponding to the frequency point as an effective signal when the carrier-to-noise ratio of the program signal is not less than the preset carrier-to-noise ratio threshold value corresponding to the television signal transmission system; and when the carrier-to-noise ratio of the program signal is smaller than a preset carrier-to-noise ratio threshold corresponding to the television signal transmission system, determining the program signal corresponding to the frequency point as an invalid signal.
Optionally, the smart television demodulates the program signals corresponding to the frequency points through Demod, and determines a carrier-to-noise ratio of the program signals corresponding to the frequency points.
In implementation, for different television signal transmission systems, a corresponding preset carrier-to-noise ratio threshold value is preset for each television signal transmission system; or, presetting a corresponding preset carrier-to-noise ratio interval for each television signal transmission system, wherein the lower limit value of the preset carrier-to-noise ratio interval is a preset carrier-to-noise ratio threshold value.
It should be noted that the preset carrier-to-noise ratio threshold corresponding to the television signal transmission system is preset according to experience or protocol of a person skilled in the art.
For example, in the case of the television signal transmission system DVB-T2, the lower limit value of the carrier-to-noise ratio interval preset for the television signal transmission system is 25.1.
For another example, when the television signal transmission system is DVB-C, the lower limit value of the carrier-to-noise ratio section preset for the DVB-C is 33.
When the intelligent television determines that the signal intensity value of the program signal corresponding to the frequency point meets one of the following conditions, the program signal corresponding to the frequency point is determined to be effective information:
the method comprises the following steps that 1, the signal intensity value of a program signal corresponding to a frequency point is larger than the upper limit value of a preset sensitivity interval corresponding to the currently used television signal transmission system;
and 2, under the condition that the signal intensity value of the program signal corresponding to the frequency point is not greater than the upper limit value of the preset sensitivity interval and not less than the lower limit value of the preset sensitivity interval, and the carrier-to-noise ratio of the program signal corresponding to the frequency point is not less than the preset carrier-to-noise ratio threshold value corresponding to the currently used television signal transmission system.
For example, when the television signal transmission system is DVB-T2, the preset sensitivity interval is-95.6 dBm to-74 dBm; presetting a carrier-to-noise ratio threshold value to be 25.1;
when the signal intensity value of the program signal corresponding to the frequency point is larger than-74 dBm, determining the program signal corresponding to the frequency point as an effective signal;
when the signal intensity value of the program signal corresponding to the frequency point is less than-95.6 dBm, determining the program signal corresponding to the frequency point as an invalid signal;
and when the signal intensity value of the program signal corresponding to the frequency point is between-95.6 dBm and-74 dBm, determining the carrier-to-noise ratio (C/N) of the program signal by analyzing the signal quality of the program signal corresponding to the frequency point, if the carrier-to-noise ratio of the program signal is not less than 25.1, determining the program signal corresponding to the frequency point as an effective signal, and if the carrier-to-noise ratio of the program signal is less than 25.1, determining the program signal corresponding to the frequency point as an invalid signal.
For example, when the television signal transmission system is DVB-C, the preset sensitivity interval is-69 dBm to-65 dBm; presetting a carrier-to-noise ratio threshold value as 33;
when the signal intensity value of the program signal corresponding to the frequency point is larger than-65 dBm, determining the program signal corresponding to the frequency point as an effective signal;
when the signal intensity value of the program signal corresponding to the frequency point is less than-69 dBm, determining the program signal corresponding to the frequency point as an invalid signal;
and when the signal intensity value of the program signal corresponding to the frequency point is between-69 dBm and-65 dBm, determining the carrier-to-noise ratio (C/N) of the program signal by analyzing the signal quality of the program signal corresponding to the frequency point, if the carrier-to-noise ratio of the program signal is not less than 33, determining that the program signal corresponding to the frequency point is an effective signal, and if the carrier-to-noise ratio of the program signal is less than 33, determining that the program signal corresponding to the frequency point is an ineffective signal.
In the embodiment of the invention, after the intelligent television determines that the TV signal source is in a normal state, the intelligent television prompts a user in a preset mode;
the preset mode is to highlight an icon of the TV signal source in the signal source menu interface or adjust the position of the icon of the TV signal source in the signal source menu interface to be the most front position.
For example, the signal source menu interface shown in fig. 4A includes an HDMI signal source, a USB signal source, and a TV signal source; and when the intelligent television determines that the TV signal source is in a normal state, displaying the icon of the TV signal source in a highlight mode.
Or, assuming that before the state of the TV signal source is judged, the positions of the icons of the TV signal source in the signal source menu interface are as shown in fig. 4A, and the sequence in the signal source menu interface is second; after the intelligent television determines that the TV signal source is in a normal state, the icons of the TV signal source are sorted in the signal source menu interface to be the first in advance, and the adjusted signal source menu interface is shown in fig. 4B.
As shown in fig. 5, an embodiment of the present invention is an overall flow chart for indicating the status of a TV signal source.
step 508, the smart television judges whether the carrier-to-noise ratio is not less than the carrier-to-noise ratio threshold corresponding to the currently used television signal transmission system, if so, step 509 is executed, and if not, step 511 is executed;
509, the smart television determines that the program signal corresponding to the frequency point is an effective signal;
step 510, the smart television determines that a TV signal source is in a normal state, and prompts a user in a preset mode;
and step 512, the smart television detects the signal intensity value of the program signal corresponding to the next frequency point, and returns to step 505.
It should be noted that, if the smart television detects program signals corresponding to all frequency points corresponding to the currently used television signal transmission system and determines that the program signals corresponding to all frequency points are not valid signals, the smart television determines that the TV signal source is in an abnormal state.
Based on the same inventive concept, the embodiment of the invention also provides the intelligent television, and as the principle of solving the problem of the intelligent television is similar to the method for indicating the state of the TV signal source in the embodiment of the invention, the implementation of the intelligent television can refer to the implementation of the method, and repeated parts are not repeated.
As shown in fig. 6, an embodiment of the present invention provides a smart television, including: at least one processing unit 600 and at least one memory unit 601, wherein the memory unit 601 stores program code that, when executed by the processing unit 600, causes the processing unit 600 to perform the following:
after the intelligent television is started, determining a plurality of frequency points corresponding to the currently used television signal transmission system; judging whether a corresponding program signal is a frequency point of an effective signal in the plurality of frequency points; if yes, determining that the TV signal source is in a normal state, and prompting a user in a preset mode.
Optionally, the processing unit 600 is specifically configured to:
judging whether the program signals corresponding to the frequency points are effective signals according to the following modes:
the intelligent television detects the signal intensity value of the program signal corresponding to the frequency point;
if the signal intensity value is larger than the upper limit value of a preset sensitivity interval corresponding to the television signal transmission system, the intelligent television determines that the program signal corresponding to the frequency point is an effective signal;
if the signal intensity value is not greater than the upper limit value and not less than the lower limit value of the preset sensitivity interval, the intelligent television determines the carrier-to-noise ratio of the program signal corresponding to the frequency point; and when the carrier-to-noise ratio is not less than a preset carrier-to-noise ratio threshold corresponding to the television signal transmission system, determining the program signal corresponding to the frequency point as an effective signal.
Optionally, the processing unit 600 is specifically configured to:
and locking the frequency point through tuner, and acquiring the signal intensity value of the program signal corresponding to the frequency point detected by tuner.
Optionally, the processing unit 600 is specifically configured to:
and demodulating the program signals corresponding to the frequency points through Demod to determine the carrier-to-noise ratio of the program signals corresponding to the frequency points.
Optionally, the preset manner is to highlight an icon of the TV signal source in the signal source menu interface, or adjust the position of the icon of the TV signal source in the signal source menu interface to the front position.
As shown in fig. 7, an embodiment of the present invention further provides a smart television, including:
the determining module 701 is configured to determine a plurality of frequency points corresponding to a currently used television signal transmission system after the smart television is started;
a determining module 702, configured to determine whether a corresponding program signal in the multiple frequency points is a frequency point of an effective signal;
the processing module 703 is configured to determine that the TV signal source is in a normal state when there is a frequency point where the corresponding program signal is an effective signal, and prompt the user in a preset manner.
Optionally, the determining module 702 is specifically configured to:
judging whether the program signals corresponding to the frequency points are effective signals according to the following modes:
the intelligent television detects the signal intensity value of the program signal corresponding to the frequency point;
if the signal intensity value is larger than the upper limit value of a preset sensitivity interval corresponding to the television signal transmission system, the intelligent television determines that the program signal corresponding to the frequency point is an effective signal;
if the signal intensity value is not greater than the upper limit value and not less than the lower limit value of the preset sensitivity interval, the intelligent television determines the carrier-to-noise ratio of the program signal corresponding to the frequency point; and when the carrier-to-noise ratio is not less than a preset carrier-to-noise ratio threshold corresponding to the television signal transmission system, determining the program signal corresponding to the frequency point as an effective signal.
Optionally, the determining module 702 is specifically configured to:
and locking the frequency point through tuner, and acquiring the signal intensity value of the program signal corresponding to the frequency point detected by tuner.
Optionally, the determining module 702 is specifically configured to:
and demodulating the program signals corresponding to the frequency points through Demod to determine the carrier-to-noise ratio of the program signals corresponding to the frequency points.
Optionally, the preset manner is to highlight an icon of the TV signal source in the signal source menu interface, or adjust the position of the icon of the TV signal source in the signal source menu interface to the front position.
As will be appreciated by one skilled in the art, embodiments of the present invention may be provided as a method, system, or computer program product. Accordingly, the present invention may take the form of an entirely hardware embodiment, an entirely software embodiment or an embodiment combining software and hardware aspects. Furthermore, the present invention may take the form of a computer program product embodied on one or more computer-usable storage media (including, but not limited to, disk storage, CD-ROM, optical storage, and the like) having computer-usable program code embodied therein.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
While preferred embodiments of the present invention have been described, additional variations and modifications in those embodiments may occur to those skilled in the art once they learn of the basic inventive concepts. Therefore, it is intended that the appended claims be interpreted as including preferred embodiments and all such alterations and modifications as fall within the scope of the invention.
It will be apparent to those skilled in the art that various changes and modifications may be made in the present invention without departing from the spirit and scope of the invention. Thus, if such modifications and variations of the present invention fall within the scope of the claims of the present invention and their equivalents, the present invention is also intended to include such modifications and variations.
Claims (8)
1. A method of indicating a status of a TV signal source, the method comprising:
after the intelligent television is started, determining a plurality of frequency points corresponding to the currently used television signal transmission system;
the intelligent television judges whether the corresponding program signals are the frequency points of the effective signals or not;
if yes, the intelligent television determines that the TV signal source is in a normal state, and prompts a user in a preset mode;
the intelligent television judges whether the program signals corresponding to the frequency points are effective signals according to the following modes:
the intelligent television detects the signal intensity value of the program signal corresponding to the frequency point;
if the signal intensity value is larger than the upper limit value of a preset sensitivity interval corresponding to the television signal transmission system, the intelligent television determines that the program signal corresponding to the frequency point is an effective signal;
if the signal intensity value is not greater than the upper limit value and not less than the lower limit value of the preset sensitivity interval, the intelligent television determines the carrier-to-noise ratio of the program signal corresponding to the frequency point; and when the carrier-to-noise ratio is not less than a preset carrier-to-noise ratio threshold corresponding to the television signal transmission system, determining the program signal corresponding to the frequency point as an effective signal.
2. The method of claim 1, wherein the smart television detecting the signal strength value of the program signal corresponding to the frequency point comprises:
the intelligent television locks the frequency point through the tuner and acquires the signal intensity value of the program signal corresponding to the frequency point detected by the tuner.
3. The method of claim 1, wherein the determining, by the smart television, the carrier-to-noise ratio of the program signals corresponding to the frequency point comprises:
and the intelligent television demodulates the program signals corresponding to the frequency points through the Demod to determine the carrier-to-noise ratio of the program signals corresponding to the frequency points.
4. The method according to any one of claims 1 to 3, wherein the preset manner is to highlight the icon of the TV signal source in the signal source menu interface or to adjust the position of the icon of the TV signal source in the signal source menu interface to the most front position.
5. An intelligent television, characterized in that the intelligent television comprises: at least one processing unit and at least one memory unit, wherein the memory unit stores program code that, when executed by the processing unit, causes the processing unit to perform the following:
after the intelligent television is started, determining a plurality of frequency points corresponding to the currently used television signal transmission system; judging whether a corresponding program signal is a frequency point of an effective signal in the plurality of frequency points; if yes, determining that the TV signal source is in a normal state, and prompting a user in a preset mode;
wherein the processing unit is specifically configured to:
judging whether the program signals corresponding to the frequency points are effective signals according to the following modes:
the intelligent television detects the signal intensity value of the program signal corresponding to the frequency point;
if the signal intensity value is larger than the upper limit value of a preset sensitivity interval corresponding to the television signal transmission system, the intelligent television determines that the program signal corresponding to the frequency point is an effective signal;
if the signal intensity value is not greater than the upper limit value and not less than the lower limit value of the preset sensitivity interval, the intelligent television determines the carrier-to-noise ratio of the program signal corresponding to the frequency point; and when the carrier-to-noise ratio is not less than a preset carrier-to-noise ratio threshold corresponding to the television signal transmission system, determining the program signal corresponding to the frequency point as an effective signal.
6. The smart television of claim 5, wherein the processing unit is specifically configured to:
and locking the frequency point through tuner, and acquiring the signal intensity value of the program signal corresponding to the frequency point detected by tuner.
7. The smart television of claim 5, wherein the processing unit is specifically configured to:
and demodulating the program signals corresponding to the frequency points through Demod to determine the carrier-to-noise ratio of the program signals corresponding to the frequency points.
8. The smart television set according to any one of claims 5 to 7, wherein the preset manner is to highlight an icon of the TV signal source in a signal source menu interface or adjust the position of the icon of the TV signal source in the signal source menu interface to a front position.
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