CN108111788B - Television non-standard signal processing method and device and computer readable storage medium - Google Patents
Television non-standard signal processing method and device and computer readable storage medium Download PDFInfo
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- CN108111788B CN108111788B CN201711389124.3A CN201711389124A CN108111788B CN 108111788 B CN108111788 B CN 108111788B CN 201711389124 A CN201711389124 A CN 201711389124A CN 108111788 B CN108111788 B CN 108111788B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/46—Receiver circuitry for the reception of television signals according to analogue transmission standards for receiving on more than one standard at will
Abstract
The invention discloses a television non-standard signal processing method, a device and a computer readable storage medium, wherein the method comprises the following steps: acquiring a preset AFT window, and performing automatic frequency tuning AFT processing on a signal to be processed; judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not; when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed; and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed. The invention calls the preset AFT window to pull the frequency deviation back to the preset AFT window, so that the television picture can be kept clear and stable, and the user experience is improved.
Description
Technical Field
The invention relates to the field of intelligent televisions, in particular to a television nonstandard signal processing method and device and a computer readable storage medium.
Background
Although smart tv, internet tv and digital tv are more and more popular at present, analog tv is dominant in many countries and regions. Especially in some underdeveloped countries and remote areas, the television signal is interfered by a complex environment or caused by the factors of the transmitting equipment in the transmission process, so that the television signal is subjected to frequency deviation, the television signal is changed into a non-standard signal, and the non-standard signal can cause the instability of a watching picture, such as image flicker, twill, horizontal line rolling and the like.
Currently, the processing for the non-standard signal is to adjust the frequency offset of the non-standard signal under a fixed Automatic Frequency Tuning (AFT) window, and since the frequency offset cannot be adjusted to the fixed AFT window, the frequency offset cannot be adjusted into the fixed AFT window even though the frequency offset is adjusted for multiple times, a television picture flickers all the time, and the viewing effect is affected. Therefore, it is necessary to provide a method for processing such non-standard signals, so that the viewing effect of the image is not affected.
Disclosure of Invention
The invention mainly aims to provide a television non-standard signal processing method, a television non-standard signal processing device and a computer readable storage medium, and aims to solve the technical problem that the watching effect is influenced because non-standard signals are difficult to process well in the prior art.
In order to achieve the above object, the present invention provides a method for processing non-standard signals of a television, comprising the following steps:
acquiring a preset AFT window, and performing automatic frequency tuning AFT processing on a signal to be processed;
judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not;
when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed;
and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed.
Preferably, the acquiring a preset AFT window and performing AFT processing on the signal to be processed specifically includes:
when AFT processing is detected to be performed on a signal to be processed, acquiring the current adjusting times;
and comparing the current adjusting times with preset adjusting times, acquiring the preset AFT window when the current adjusting times are larger than the preset adjusting times, and carrying out AFT processing on the signal to be processed.
Preferably, after comparing the current adjustment times with a preset adjustment time, the method for processing a television non-standard signal further includes:
and when the current adjusting times are not more than the preset adjusting times, stopping AFT processing on the signal to be processed.
Preferably, the acquiring a preset AFT window and performing AFT processing on the signal to be processed specifically includes:
and acquiring a preset AFT window, acquiring the current frequency offset of the signal to be processed, and tuning the frequency of the signal to be processed according to the current frequency offset.
Preferably, the obtaining the current frequency offset of the signal to be processed and tuning the frequency of the signal to be processed according to the current frequency offset specifically include:
acquiring the current frequency offset of the signal to be processed, and judging the offset type of the current frequency offset;
and tuning the frequency of the signal to be processed according to the offset type.
Preferably, the tuning the frequency of the signal to be processed according to the offset type specifically includes:
when the offset type is upward, adjusting the frequency of the signal to be processed by one step length downwards;
and when the offset type is downward, adjusting the frequency of the signal to be processed by one step upwards.
Preferably, when the frequency offset is not within the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed, specifically including:
and when the frequency deviation is not in the preset AFT window, acquiring a target AFT window which is larger than the preset AFT window by a preset value, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed.
Preferably, the determining whether the frequency offset of the signal to be processed after performing the AFT processing is within the preset AFT window specifically includes:
and comparing the frequency offset of the processed signal to be processed with the preset AFT window, and judging whether the frequency offset is smaller than the preset AFT window.
In addition, in order to achieve the above object, the present invention further provides a television non-standard signal processing apparatus, including: the system comprises a memory, a processor and a television non-standard signal processing program which is stored on the memory and can run on the processor, wherein the television non-standard signal processing program realizes the steps of the television non-standard signal processing method when being executed by the processor.
In addition, to achieve the above object, the present invention further provides a computer-readable storage medium having a television non-standard signal processing program stored thereon, which, when being executed by a processor, implements the steps of the television non-standard signal processing method.
In the invention, a preset AFT window is obtained, and automatic frequency tuning AFT processing is carried out on a signal to be processed; judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not; when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed; and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed. The invention calls the preset AFT window to pull the frequency deviation back to the preset AFT window, so that the television picture can be kept clear and stable, and the user experience is improved.
Drawings
FIG. 1 is a schematic diagram of a non-standard signal processing apparatus for a television in a hardware operating environment according to an embodiment of the present invention;
FIG. 2 is a flowchart illustrating a television non-standard signal processing method according to a first embodiment of the present invention;
FIG. 3 is a flowchart illustrating a television non-standard signal processing method according to a second embodiment of the present invention;
FIG. 4 is a flowchart illustrating a television non-standard signal processing method according to a third embodiment of the present invention;
fig. 5 is a flowchart illustrating a television non-standard signal processing method according to a fourth embodiment of the present invention.
The implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The solution of the embodiment of the invention is mainly as follows: the method comprises the steps of obtaining a preset AFT window, and carrying out automatic frequency tuning AFT processing on a signal to be processed; judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not; when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed; and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed. In the embodiment, the preset AFT window is called, and the frequency offset is pulled back to the preset AFT window, so that the television picture can be kept clear and stable, and the user experience is improved.
Referring to fig. 1, fig. 1 is a schematic structural diagram of a television non-standard signal processing apparatus in a hardware operating environment according to an embodiment of the present invention.
As shown in fig. 1, the television non-standard signal processing apparatus may include: a processor 1001, such as a CPU, a communication bus 1002, a user interface 1003, a network interface 1004, and a memory 1005. Wherein a communication bus 1002 is used to enable connective communication between these components. The user interface 1003 may comprise a Display screen (Display), and the optional user interface 1003 may also comprise a standard wired interface, a wireless interface. The network interface 1004 may optionally include a standard wired interface, a wireless interface (e.g., WI-FI interface). The memory 1005 may be a high-speed RAM memory or a non-volatile memory (e.g., a magnetic disk memory). The memory 1005 may alternatively be a storage server separate from the processor 1001.
The television non-standard signal processing device can be a server or other physical equipment connected with a network.
Those skilled in the art will appreciate that the configuration shown in fig. 1 does not constitute a limitation of the television non-standard signal processing apparatus and may include more or fewer components than those shown, or some components may be combined, or a different arrangement of components.
As shown in fig. 1, a memory 1005, which is a kind of computer-readable storage medium, may include therein an operating system, a network communication module, a user interface module, and a television non-standard signal processing program.
The server calls the tv non-standard signal processing program stored in the memory 1005 through the processor 1001, and performs the following operations:
acquiring a preset AFT window, and performing automatic frequency tuning AFT processing on a signal to be processed;
judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not;
when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed;
and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed.
Further, processor 1001 may call a television non-standard signal handler stored in memory 1005, and also perform the following operations:
when AFT processing is detected to be performed on a signal to be processed, acquiring the current adjusting times;
and comparing the current adjusting times with preset adjusting times, acquiring the preset AFT window when the current adjusting times are larger than the preset adjusting times, and carrying out AFT processing on the signal to be processed.
Further, processor 1001 may call a television non-standard signal handler stored in memory 1005, and also perform the following operations:
and when the current adjusting times are not more than the preset adjusting times, stopping AFT processing on the signal to be processed.
Further, processor 1001 may call a television non-standard signal handler stored in memory 1005, and also perform the following operations:
and acquiring a preset AFT window, acquiring the current frequency offset of the signal to be processed, and tuning the frequency of the signal to be processed according to the current frequency offset.
Further, processor 1001 may call a television non-standard signal handler stored in memory 1005, and also perform the following operations:
acquiring the current frequency offset of the signal to be processed, and judging the offset type of the current frequency offset;
and tuning the frequency of the signal to be processed according to the offset type.
Further, processor 1001 may call a television non-standard signal handler stored in memory 1005, and also perform the following operations:
when the offset type is upward, adjusting the frequency of the signal to be processed by one step length downwards;
and when the offset type is downward, adjusting the frequency of the signal to be processed by one step upwards.
Further, processor 1001 may call a television non-standard signal handler stored in memory 1005, and also perform the following operations:
and when the frequency deviation is not in the preset AFT window, acquiring a target AFT window which is larger than the preset AFT window by a preset value, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed.
Further, processor 1001 may call a television non-standard signal handler stored in memory 1005, and also perform the following operations:
and comparing the frequency offset of the processed signal to be processed with the preset AFT window, and judging whether the frequency offset is smaller than the preset AFT window.
In the embodiment, the preset AFT window is obtained, and the automatic frequency tuning AFT processing is carried out on the signal to be processed; judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not; when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed; and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed. In the embodiment, the preset AFT window is called, and the frequency offset is pulled back to the preset AFT window, so that the television picture can be kept clear and stable, and the user experience is improved.
Based on the hardware structure, the embodiment of the television non-standard signal processing method is provided.
Referring to fig. 2, fig. 2 is a flowchart illustrating a television non-standard signal processing method according to a first embodiment of the present invention.
In a first embodiment, the method for processing the non-standard signal of the television comprises the following steps:
step S10: acquiring a preset AFT window, and performing automatic frequency tuning AFT processing on a signal to be processed;
it should be noted that, after the television signal is frequency offset in the transmission process and becomes a non-standard signal, the problem of television picture flickering, twill and the like will be caused when playing, and the AFT window adopted for adjusting the television picture in the prior art is a fixed and unadjustable AFT window.
It can be understood that the preset AFT window is a new AFT window for replacing a fixed AFT window when the television picture cannot be adjusted clearly under the fixed AFT window, and the preset AFT window is larger than the fixed AFT window, so that the frequency offset of the television non-standard signal is more easily adjusted into the preset AFT window. The signal to be processed refers to a television nonstandard signal with frequency offset in the transmission process; and performing Automatic Frequency Tuning (AFT) processing on the signal to be processed under the preset AFT window, wherein the AFT processing specifically comprises the following steps: the TV receives high frequency TV signals from an antenna, the high frequency TV signals are accessed into a mixer, the high frequency TV signals and oscillation signals sent by a high frequency head local oscillation circuit are mixed in the mixer to obtain 38MHz image intermediate frequency signals, and then the image intermediate frequency signals are sent to a middle amplifying circuit. If the frequency of the image intermediate frequency signal output by the mixer deviates from 38MHz, the frequency discriminator can detect the change and convert the change into corresponding direct current voltage to finely adjust the local oscillation frequency. The direct current voltage is the AFT voltage, which is used to ensure that the image intermediate frequency signal frequency output by the mixer is always 38 MHz.
Step S20: judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not;
it can be understood that the sign that the signal processing of treating is accomplished does the frequency offset of treating the signal is in predetermineeing the AFT window, the frequency offset is in when predetermineeing the AFT window, predetermineeing the AFT window and contained the frequency offset, the frequency offset will disappear to the influence of picture, and the scintillation of TV picture, twill scheduling problem will disappear, and the TV picture becomes clear and stable, consequently, is passing through predetermine the AFT window right after treating the signal and carrying out the AFT and handling, will judge whether the frequency offset of treating the signal is in predetermine in the AFT window.
Further, the step S20 specifically includes:
and comparing the frequency offset of the processed signal to be processed with the preset AFT window, and judging whether the frequency offset is smaller than the preset AFT window.
It should be noted that, when determining whether the frequency offset is within the preset AFT window, comparing the frequency offset with the preset AFT window, and determining whether the frequency offset is not greater than the preset AFT window, and when the frequency offset is not greater than the preset AFT window, determining that the frequency offset is within the preset AFT window; and when the frequency deviation is greater than the preset AFT window, determining that the frequency deviation is not in the preset AFT window.
Step S30: when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed;
it should be noted that, when the frequency offset of the signal to be processed after the AFT processing is not within the preset AFT window, the frequency offset still affects the viewing effect of the television picture, which indicates that the preset AFT window is still smaller at this time, and a larger AFT window needs to be called to replace the preset AFT window.
In the specific implementation, when the frequency deviation is judged not to be in the preset AFT window, a target AFT window larger than the preset AFT window is obtained, and the target AFT window is used as a new preset AFT window to carry out AFT processing on the signal to be processed under the new preset AFT window so as to adjust the frequency deviation to the new AFT window, so that the processing of the signal to be processed is realized, and the stability and the definition of a television picture are ensured.
Step S40: and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed.
It can be understood that, when the frequency offset of the signal to be processed is within the preset AFT window, the influence of the frequency offset on the television picture is eliminated, the television picture will remain clear and stable, and at this time, the AFT processing on the signal to be processed can be stopped.
In the embodiment, the preset AFT window is obtained, and the automatic frequency tuning AFT processing is carried out on the signal to be processed; judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not; when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed; and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed. In the embodiment, the preset AFT window is called, and the frequency offset is pulled back to the preset AFT window, so that the television picture can be kept clear and stable, and the user experience is improved.
Referring to fig. 3, fig. 3 is a flowchart illustrating a television non-standard signal processing method according to a second embodiment of the present invention, and the second embodiment of the television non-standard signal processing method according to the present invention is proposed based on the embodiment shown in fig. 2.
In the second embodiment, the step S10 specifically includes:
step S101: when AFT processing is detected to be performed on a signal to be processed, acquiring the current adjusting times;
step S102: and comparing the current adjusting times with preset adjusting times, acquiring the preset AFT window when the current adjusting times are larger than the preset adjusting times, and carrying out AFT processing on the signal to be processed.
It can be understood that, when the number of times of adjustment is large, and the frequency offset of the signal to be processed still cannot be adjusted into the fixed AFT window, it indicates that the fixed AFT window is small, and a large AFT window needs to be called to replace the current AFT window. Therefore, the number of times to adjust is used to determine when to acquire the preset AFT window.
It should be noted that the current adjustment times are adjustment times within a corresponding period, for example, adjustment times within one minute, when performing the AFT adjustment under a fixed AFT window of a general television. The preset adjusting times refer to preset adjusting times, and in general, if the AFT window is proper, the signals to be processed can be accurately adjusted within the preset adjusting times, so that the preset adjusting times are used as a standard for judging whether the current adjusting times can be accurately adjusted.
Further, after step S102, the method for processing a tv non-standard signal further includes:
and when the current adjusting times are not more than the preset adjusting times, stopping AFT processing on the signal to be processed.
It can be understood that, when the current adjustment number is not greater than the preset adjustment number, it indicates that the signal to be processed has been adjusted within the preset adjustment number at this time, and at this time, the processing of the signal to be processed is stopped.
In the specific implementation, taking the preset adjustment frequency as 20 times per minute as an example, obtaining the current adjustment frequency, and judging whether the current adjustment frequency is greater than the preset adjustment frequency, if the current adjustment frequency is 10 times per minute, the current adjustment frequency is less than the preset adjustment frequency, and at this time, the adjustment of the signal to be processed is completed, and the adjustment of the signal to be processed is stopped; if the current adjustment times are 30 times per minute. And if the current adjustment times are larger than the preset adjustment times, the used fixed AFT window is smaller, a preset AFT window larger than the fixed AFT window is obtained, and the fixed AFT window is replaced by the preset AFT window. Of course, if the preset AFT window is used at this time, a new preset AFT window larger than the preset AFT window will be acquired until the adjustment is completed.
In this embodiment, when detecting that the AFT processing is performed on the signal to be processed, the current adjustment times are obtained; and comparing the current adjusting times with preset adjusting times, acquiring the preset AFT window when the current adjusting times are larger than the preset adjusting times, and carrying out AFT processing on the signal to be processed. And when the current adjusting times are not more than the preset adjusting times, stopping AFT processing on the signal to be processed. Since the present embodiment determines whether the currently used AFT window is appropriate by adjusting the number of times, it is determined when to replace the AFT window.
Referring to fig. 4, fig. 4 is a flowchart illustrating a television non-standard signal processing method according to a third embodiment of the present invention, and the third embodiment of the television non-standard signal processing method according to the present invention is proposed based on the embodiment shown in fig. 2.
In this embodiment, the step S10 specifically includes:
and acquiring a preset AFT window, acquiring the current frequency offset of the signal to be processed, and tuning the frequency of the signal to be processed according to the current frequency offset.
It should be noted that the current frequency offset refers to a current frequency offset of the signal to be processed, and in a case where the current frequency offset is known, the frequency of the signal to be processed may be tuned according to the current frequency offset, so as to adjust the current frequency offset to zero.
Further, the step S10 specifically includes:
step S103: acquiring the current frequency offset of the signal to be processed, and judging the offset type of the current frequency offset;
step S104: and tuning the frequency of the signal to be processed according to the offset type.
It is understood that the offset type of the current frequency offset includes an upward offset and a downward offset, and the frequency of the signal to be processed can be tuned according to the offset type to adjust the current frequency offset to zero when the offset type of the current frequency offset is known.
Further, the step S104 specifically includes:
step S1041: when the offset type is upward, adjusting the frequency of the signal to be processed by one step length downwards;
and when the offset type is downward, adjusting the frequency of the signal to be processed by one step upwards.
It should be noted that the step size refers to an adjustment amount for adjusting the frequency in one adjustment, for example, the step size is 10KHz, i.e., the frequency is adjusted by 10KHz in each adjustment. When the offset type is upward, the frequency is indicated to be shifted upward, and the frequency is adjusted downward by one step each time until the adjustment is completed. And when the offset type is lower, the frequency is indicated to be offset downwards, and the frequency is adjusted upwards by one step at a time until the adjustment is finished.
In the embodiment, the current frequency offset of the signal to be processed is obtained, and the offset type of the current frequency offset is judged; when the offset type is upward, adjusting the frequency of the signal to be processed by one step length downwards; and when the offset type is downward, adjusting the frequency of the signal to be processed by one step upwards. Because the offset type of the signal to be processed is obtained, the frequency of the signal to be processed can be adjusted one step at a time according to the offset type, the signal to be processed gradually approaches to a standard value, and the signal to be processed is processed.
Referring to fig. 5, fig. 5 is a flowchart illustrating a television non-standard signal processing method according to a fourth embodiment of the present invention, and the fourth embodiment of the television non-standard signal processing method according to the present invention is proposed based on the embodiment shown in fig. 2.
In this embodiment, the step S30 specifically includes:
step S301: and when the frequency deviation is not in the preset AFT window, acquiring a target AFT window which is larger than the preset AFT window by a preset value, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed.
It can be understood that, the preset value is a preset frequency value, for example, 20KHz, when the preset AFT window cannot adjust the frequency offset of the signal to be processed into the preset AFT window, it indicates that the preset AFT window is smaller, and a larger AFT window needs to be obtained to replace the preset AFT window, so as to continue performing AFT processing on the signal to be processed, and adjust the frequency offset of the signal to be processed into the larger AFT window, thereby implementing adjustment of the signal to be processed and ensuring definition and stability of a television picture.
In a specific implementation, when the frequency offset is not within the preset AFT window, the preset AFT window is added with the preset value to obtain a target AFT window, the target AFT window is used as a new preset AFT window, the AFT processing is performed on the signal to be processed again under the new preset AFT window, and when the frequency offset cannot be adjusted into the new AFT preset window, an updated AFT window which is larger than the new preset AFT window by the preset value is obtained until the adjustment processing on the signal to be processed is completed.
In this embodiment, when the frequency offset is not within the preset AFT window, a target AFT window that is larger than the preset AFT window by a preset value is obtained, the obtained target AFT window is used as a new preset AFT window, and the step of performing AFT processing on the signal to be processed is returned.
The target AFT window which is larger than the preset AFT window by a preset value is obtained, the replacement rule of the preset AFT window is determined according to the preset value, the AFT window is sequentially increased according to the preset value, and therefore whether the frequency deviation is in the AFT window or not is gradually checked.
Furthermore, an embodiment of the present invention further provides a computer-readable storage medium, where a television non-standard signal processing program is stored on the computer-readable storage medium, and when executed by a processor, the television non-standard signal processing program implements the following operations:
acquiring a preset AFT window, and performing automatic frequency tuning AFT processing on a signal to be processed;
judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not;
when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed;
and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed.
Further, the television non-standard signal processing program when executed by the processor further implements the following operations:
when AFT processing is detected to be performed on a signal to be processed, acquiring the current adjusting times;
and comparing the current adjusting times with preset adjusting times, acquiring the preset AFT window when the current adjusting times are larger than the preset adjusting times, and carrying out AFT processing on the signal to be processed.
Further, the television non-standard signal processing program when executed by the processor further implements the following operations:
and when the current adjusting times are not more than the preset adjusting times, stopping AFT processing on the signal to be processed.
Further, the television non-standard signal processing program when executed by the processor further implements the following operations:
and acquiring a preset AFT window, acquiring the current frequency offset of the signal to be processed, and tuning the frequency of the signal to be processed according to the current frequency offset.
Further, the television non-standard signal processing program when executed by the processor further implements the following operations:
acquiring the current frequency offset of the signal to be processed, and judging the offset type of the current frequency offset;
and tuning the frequency of the signal to be processed according to the offset type.
Further, the television non-standard signal processing program when executed by the processor further implements the following operations:
when the offset type is upward, adjusting the frequency of the signal to be processed by one step length downwards;
and when the offset type is downward, adjusting the frequency of the signal to be processed by one step upwards.
Further, the television non-standard signal processing program when executed by the processor further implements the following operations:
and when the frequency deviation is not in the preset AFT window, acquiring a target AFT window which is larger than the preset AFT window by a preset value, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed.
Further, the television non-standard signal processing program when executed by the processor further implements the following operations:
and comparing the frequency offset of the processed signal to be processed with the preset AFT window, and judging whether the frequency offset is smaller than the preset AFT window.
In the embodiment, the preset AFT window is obtained, and the automatic frequency tuning AFT processing is carried out on the signal to be processed; judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not; when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed; and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed. In the embodiment, the preset AFT window is called, and the frequency offset is pulled back to the preset AFT window, so that the television picture can be kept clear and stable, and the user experience is improved.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
The use of the words first, second, third, etc. do not denote any order, but rather the words are to be construed as names.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solutions of the present invention may be embodied in the form of a software product, which is stored in a computer-readable storage medium (such as ROM/RAM, magnetic disk, optical disk) and includes instructions for enabling a terminal device (such as a mobile phone, a computer, a server, an air conditioner, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. A TV nonstandard signal processing method is characterized by comprising the following steps:
acquiring a preset AFT window, and performing Automatic Frequency Tuning (AFT) processing on a signal to be processed, wherein the signal to be processed is a television nonstandard signal with frequency offset generated in the transmission process, the preset AFT window is a new AFT window used for replacing a fixed AFT window when a television picture cannot be clearly adjusted under the fixed AFT window, and the preset AFT window is larger than the fixed AFT window;
judging whether the frequency offset of the signal to be processed after the AFT processing is in the preset AFT window or not;
when the frequency deviation is not in the preset AFT window, acquiring a target AFT window larger than the preset AFT window, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed;
and when the frequency deviation is in the preset AFT window, stopping AFT processing on the signal to be processed.
2. The method according to claim 1, wherein the acquiring a preset AFT window and performing AFT processing on the signal to be processed specifically comprises:
when AFT processing is detected to be performed on a signal to be processed, acquiring the current adjusting times;
and comparing the current adjusting times with preset adjusting times, acquiring the preset AFT window when the current adjusting times are larger than the preset adjusting times, and carrying out AFT processing on the signal to be processed.
3. The method of claim 2, wherein after comparing the current number of adjustments to a preset number of adjustments, the method further comprises:
and when the current adjusting times are not more than the preset adjusting times, stopping AFT processing on the signal to be processed.
4. The method according to claim 1, wherein the acquiring a preset AFT window and performing AFT processing on the signal to be processed specifically comprises:
and acquiring a preset AFT window, acquiring the current frequency offset of the signal to be processed, and tuning the frequency of the signal to be processed according to the current frequency offset.
5. The method according to claim 4, wherein the obtaining a current frequency offset of the signal to be processed and tuning the frequency of the signal to be processed according to the current frequency offset specifically comprises:
acquiring the current frequency offset of the signal to be processed, and judging the offset type of the current frequency offset;
and tuning the frequency of the signal to be processed according to the offset type.
6. The method for processing the non-standard television signal according to claim 5, wherein the tuning the frequency of the signal to be processed according to the offset type specifically comprises:
when the offset type is upward, adjusting the frequency of the signal to be processed by one step length downwards;
and when the offset type is downward, adjusting the frequency of the signal to be processed by one step upwards.
7. The method according to any one of claims 1 to 6, wherein when the frequency offset is not within the preset AFT window, acquiring a target AFT window larger than the preset AFT window, using the acquired target AFT window as a new preset AFT window, and returning to the step of AFT processing the signal to be processed, specifically comprises:
and when the frequency deviation is not in the preset AFT window, acquiring a target AFT window which is larger than the preset AFT window by a preset value, taking the acquired target AFT window as a new preset AFT window, and returning to the step of performing AFT processing on the signal to be processed.
8. The method according to any one of claims 1 to 6, wherein the determining whether the frequency offset of the signal to be processed after the AFT processing is within the preset AFT window specifically comprises:
and comparing the frequency offset of the processed signal to be processed with the preset AFT window, and judging whether the frequency offset is smaller than the preset AFT window.
9. An apparatus for processing non-standard signals of a television, the apparatus comprising: memory, processor and a television non-standard signal processing program stored on the memory and executable on the processor, the television non-standard signal processing program, when executed by the processor, implementing the steps of the television non-standard signal processing method according to any one of claims 1 to 8.
10. A computer-readable storage medium, having stored thereon a television non-standard signal processing program which, when executed by a processor, implements the steps of the television non-standard signal processing method according to any one of claims 1 to 8.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422096A (en) * | 1975-11-14 | 1983-12-20 | Rca Corporation | Television frequency synthesizer for nonstandard frequency carriers |
| US4823387A (en) * | 1987-05-08 | 1989-04-18 | Rca Licensing Corporation | Television tuning system with provisions for tuning RF signals with scrambled video information |
| CN1073809A (en) * | 1991-12-26 | 1993-06-30 | 三星电子株式会社 | The apparatus and method for of control antenna |
| CN1076578A (en) * | 1992-02-29 | 1993-09-22 | 三星电子株式会社 | Reduce the method for HRC mode reception time in cable television |
| CN1610390A (en) * | 2004-11-16 | 2005-04-27 | 熊猫电子集团有限公司 | Searching method for TV programme signal |
| CN105681887A (en) * | 2015-06-10 | 2016-06-15 | 深圳Tcl数字技术有限公司 | Television channel searching method and device |
| CN105791968A (en) * | 2014-12-18 | 2016-07-20 | 深圳Tcl数字技术有限公司 | Method for realizing channel switching, and television |
-
2017
- 2017-12-20 CN CN201711389124.3A patent/CN108111788B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4422096A (en) * | 1975-11-14 | 1983-12-20 | Rca Corporation | Television frequency synthesizer for nonstandard frequency carriers |
| US4823387A (en) * | 1987-05-08 | 1989-04-18 | Rca Licensing Corporation | Television tuning system with provisions for tuning RF signals with scrambled video information |
| CN1073809A (en) * | 1991-12-26 | 1993-06-30 | 三星电子株式会社 | The apparatus and method for of control antenna |
| CN1076578A (en) * | 1992-02-29 | 1993-09-22 | 三星电子株式会社 | Reduce the method for HRC mode reception time in cable television |
| CN1610390A (en) * | 2004-11-16 | 2005-04-27 | 熊猫电子集团有限公司 | Searching method for TV programme signal |
| CN105791968A (en) * | 2014-12-18 | 2016-07-20 | 深圳Tcl数字技术有限公司 | Method for realizing channel switching, and television |
| CN105681887A (en) * | 2015-06-10 | 2016-06-15 | 深圳Tcl数字技术有限公司 | Television channel searching method and device |
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