CN112399097A - Signal interference processing method, digital television and storage medium - Google Patents
Signal interference processing method, digital television and storage medium Download PDFInfo
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Abstract
The invention discloses a signal interference processing method, a digital television and a storage medium, wherein the method comprises the following steps: when a digital television program is watched, judging whether the digital television program is interfered by an HDMI signal or not based on the current state information of the digital television signal, wherein the current state information comprises the strength information of the digital television signal or the code stream information of the digital television signal; and when the judgment result is yes, closing the HDMI signal. The invention decides whether to close the HDMI signal by dynamically judging the bit error rate or the signal intensity of the digital television signal code stream, thereby not only solving the problem that the HDMI signal interferes with the digital television signal, but also not influencing the use of the HDMI function of a user.
Description
Technical Field
The present invention relates to the field of digital television technologies, and in particular, to a signal interference processing method, a digital television, and a storage medium.
Background
At present, a television generally has 2 to 4 HDMI ports (High Definition Multimedia Interface) and also has a digital television receiving port, for example, two digital television tuner receiving terminals DVB-T2/T/C and DVB-S2/S are available in europe; china has a DTMB digital television tuner receiving terminal; north america have ATSC digital television tuner receive terminals.
Because the input signal amplitude of the digital television is very small, for example, when the mode QPSK code rate is 1/2, the lowest sensitivity requirement of DVB-T2 is-97 dBm, the corresponding input signal amplitude is only 3.5 microvolts, and the signal is very weak; QPSK is called Quadrature Phase Shift Keying, and is a digital modulation method, where code rate refers to coding rate, 1/4code rate represents that 1/4 is an active code, 3/4 is a check code and an error correction code, and the higher the coding rate, the higher the efficiency; when the channel quality is poor, more redundant information needs to be added to ensure that the receiving end can correctly demodulate the signal, the more redundant information means a low coding rate, and the lowest coding rate is that one code needs to add 3 redundant codes, that is, 1/4 codes. When the channel quality is good, demodulation can be carried out by needing few redundant check bits, the coding rate can be improved, and the system can select a proper coding rate according to the change of the channel, so that a user with good channel quality can obtain a higher rate, and the average throughput rate is improved.
When the digital television signal is weak, it is easily interfered by external radiation. The radiation intensity of the HDMI signal source is very large, and the radiation spectrum range is also very wide, for example, the radiation spectrum of HDMI has very large radiation intensity from 100MHz to 3 GHz. The frequency range of the terrestrial digital television is 50.5-863 MHZ, and the frequency range of the satellite digital television is 950-2150 MHZ; the interference frequency points of the HDMI are all in the input frequency of the digital television, and simultaneously, as a user can lean the HDMI signal line and the digital television together or bind the HDMI signal line and the digital television together, the HDMI signal is easily interfered to the digital television signal, so that the picture has mosaic.
Meanwhile, at present, the television has an HDMI fast power on/off function, that is, the HDMI function is already turned on when the television is turned on, and even if a user watches a digital television, the HDMI function is also turned on, so that an HDMI signal and a digital television signal exist at the same time, and the HDMI signal is more likely to interfere with the digital television signal.
Accordingly, the prior art is yet to be improved and developed.
Disclosure of Invention
The invention mainly aims to provide a signal interference processing method, a digital television and a storage medium, and aims to solve the problem that the digital television is interfered by HDMI signals in the prior art.
In order to achieve the above object, the present invention provides a signal interference processing method, including the following steps:
when a digital television program is watched, judging whether the digital television program is interfered by an HDMI signal or not based on the current state information of the digital television signal, wherein the current state information comprises the strength information of the digital television signal or the code stream information of the digital television signal;
and when the judgment result is yes, closing the HDMI signal.
Optionally, the signal interference processing method, wherein the determining whether to be interfered by the HDMI signal based on the current state information of the digital television signal specifically includes:
when a digital television program is watched, monitoring the bit error rate of a digital television signal code stream in real time, and preliminarily confirming the interference of the HDMI signal when the bit error rate is greater than a first threshold value; or
When a digital television program is watched, the signal intensity of the digital television is monitored in real time, and when the signal intensity is lower than a second threshold value, the HDMI signal interference is preliminarily confirmed.
Optionally, the signal interference processing method, wherein when the HDMI signal is turned off, the method further includes:
detecting whether the current bit error rate of the digital television signal code stream is greater than the first threshold value;
if not, keeping the HDMI signal in a closed state;
if yes, the HDMI signal is turned on.
Optionally, the signal interference processing method, wherein when the HDMI signal is turned off, the method further includes:
detecting whether the current signal intensity rate of the digital television is lower than the second threshold value;
if not, keeping the HDMI signal in a closed state;
if yes, the HDMI signal is turned on.
Optionally, the signal interference processing method, wherein after the HDMI signal is turned off, the method further includes:
and after receiving an operation instruction that an information source key or a switching information source key of a key of the remote controller is pressed, opening the HDMI signal.
Optionally, the signal interference processing method, wherein after receiving an operation instruction that an information source key or a key of a remote controller is pressed for switching the information source key, further includes:
when the signal source switching indication is to turn on a DTV signal source, the HDMI signal is turned off again;
the closing of the HDMI signal specifically includes: and disconnecting the pull-up terminal resistor of the HDMI differential line receiving end.
Optionally, the signal interference processing method further includes:
and if the current digital television program is the DTV information source, acquiring the current state information of the digital television signal.
Optionally, the signal interference processing method further includes:
and when the HDMI signal is turned on when the exit of the DTV signal source is received.
In addition, to achieve the above object, the present invention also provides a digital television, wherein the digital television includes: a memory, a processor and a signal interference processing program stored on the memory and executable on the processor, the signal interference processing program when executed by the processor implementing the steps of the signal interference processing method as described above.
In addition, in order to achieve the above object, the present invention further provides a storage medium, wherein the storage medium stores a signal interference processing program, and the signal interference processing program realizes the steps of the signal interference processing method as described above when being executed by a processor.
When watching a digital television program, judging whether the digital television program is interfered by an HDMI signal or not based on the current state information of the digital television signal, wherein the current state information comprises the strength information of the digital television signal or the code stream information of the digital television signal; when the judgment result is yes, the HDMI signal is closed; whether the HDMI signal is closed or not can be determined according to the current state information of the digital television signal, so that the problem that the HDMI signal interferes with the digital television signal is solved, the use of a user on the HDMI function is not influenced, and convenience is brought to the user.
Drawings
Fig. 1 is a flow chart of a preferred embodiment of a signal interference processing method according to the present invention;
FIG. 2 is a block diagram of a digital television receiving system according to a preferred embodiment of the signal interference processing method of the present invention;
FIG. 3 is a schematic diagram of the HDMI signal being turned off according to the preferred embodiment of the signal interference processing method of the present invention;
fig. 4 is a flowchart illustrating a specific signal interference processing procedure according to a preferred embodiment of the signal interference processing method of the present invention;
fig. 5 is a schematic diagram of an operating environment of a digital television according to a preferred embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer and clearer, the present invention is further described in detail below with reference to the accompanying drawings and examples. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
As shown in fig. 1, the signal interference processing method according to the preferred embodiment of the present invention includes the following steps:
step S10, when watching the digital television program, judging whether the digital television program is interfered by the HDMI signal based on the current state information of the digital television signal; the current state information comprises the strength information of the digital television signal or the code stream information of the digital television signal;
and step S20, when the judgment result is yes, the HDMI signal is closed.
Specifically, the digital television signal code stream information is preferably a Bit Error Rate (BER), which is also called Bit Error probability (BER), and in digital transmission, the number of Bit errors is the number of received bits of a data stream on a communication channel that are changed due to noise, interference, distortion or Bit synchronization errors, and is the number of Error bits divided by the total number of transmitted bits during a study time interval; when the digital television signal is interfered by the HDMI signal, the BER becomes large, that is, the larger the BER is, the more serious the interference by the HDMI signal is.
The Strength information of the digital television Signal is preferably Signal Strength, and the Signal Strength (SSI) represents the Strength of the digital television Signal; the larger the SSI, the larger the signal amplitude, and the less susceptible to interference from HDMI signals.
It should be noted that, in the present invention, the bit error rate and the signal strength are selected preferentially to determine whether to turn off the parameters of the HDMI signal, and certainly, the determination may be performed by monitoring other parameters, such as PER (packet error rate), C/N (signal to noise ratio), SQI (signal quality progress bar), and the like, and the same effect may also be achieved.
Specifically, when the user is watching a digital television program, the system monitors the BER (bit error rate) of the digital television signal code stream in real time, and recognizes that the BER (bit error rate) of the digital television signal code stream is greater than a first threshold (for example, the first threshold takes the value of 2 × 10)-4Bit error rate higher than 2 x 10-4When the picture is mosaic, namely the signal interference is serious), the HDMI signal is firstly closed when the interference of the HDMI signal is preliminarily confirmed.
Further, after the HDMI signal is turned off, the BER is determined again, specifically as follows:
after the HDMI signal is closed, detecting whether the bit error rate of the digital television signal code stream is greater than the first threshold value again; if not, confirming the interference of the HDMI signal again, and keeping the HDMI signal in a closed state (if the BER is not detected to be larger than the first threshold value again, the interference of the HDMI signal to the digital television signal is indicated, and after the HDMI signal is closed, the BER is reduced, so that the HDMI signal is kept in the closed state continuously); if the interference of the digital television signal is not caused by the HDMI signal, the HDMI signal is turned on to avoid the influence on the subsequent operation of the user.
Specifically, when a user watches a digital television program, the system monitors the SSI (signal strength) of the digital television in real time, and when it is recognized that the SSI (signal strength) of the digital television is smaller than a second threshold (for example, the value of the second threshold is 30, and the range of the SSI is 0 to 100), the HDMI signal is turned off first if the HDMI signal interference is preliminarily confirmed.
Further, after the HDMI signal is turned off, the size of SSI is determined again, specifically as follows:
after the HDMI signal is closed, detecting whether the signal intensity rate of the digital television is lower than the second threshold value again; if not, the HDMI signal is maintained in the closed state after the interference of the HDMI signal is confirmed again (that is, after the HDMI signal is closed, the SSI detected again is not less than the second threshold, which means that the interference of the HDMI signal on the digital television signal is caused, and after the HDMI signal is closed, the SSI is increased, which means that the HDMI signal is continuously maintained in the closed state); if yes, it is determined that the HDMI signal is not interfered, indicating that the HDMI signal is not interfered, because SSI is still lower than the second threshold after the HDMI signal is turned off, the HDMI signal is turned on if the interference of the digital television signal is not caused by the HDMI signal, and thus, the influence on the subsequent operation of the user is avoided.
Furthermore, the HDMI signal is predictively opened in advance, when the HDMI signal is determined to be closed due to HDMI signal interference, whether a user presses a source key or a switching source key of a key of the remote controller or not is monitored in real time, and when the HDMI signal is pressed, the HDMI signal is opened (namely, after an operation instruction that the source key or the switching source key of the remote controller is pressed, the HDMI signal is opened), and the speed of switching the HDMI signal source for the user cannot be slowed down. As the user needs 1-2 seconds in the process of pressing the information source key or the switching information source key of the key and then switching to the HDMI information source, the HDMI signal can be predictively opened in advance for 1-2 seconds, and the time for switching the HDMI can not be influenced. When the fact that the user presses the source key or the switching source key of the key is detected, the user does not switch to other sources and remains in the DTV source, the HDMI signal is closed again (namely when the source switching indication is to turn on the DTV source, the HDMI signal is closed again).
Further, after the digital television is started and initialized, whether the digital television is currently under a DTV information source is judged, and if so, the bit error rate or the signal intensity of a digital television signal code stream needs to be monitored, that is, if the current digital television program is the DTV information source, the current state information of the digital television signal is acquired. In addition, when an indication to exit the DTV source is received, the HDMI signal is turned on.
A block diagram of a digital television receiving system is introduced below, as shown in fig. 2, and the specific working process is as follows:
inputting a digital television signal, and outputting an intermediate frequency signal after the digital television signal enters a Tuner module and is subjected to frequency mixing and frequency reduction; the intermediate frequency signal enters a Ddemod module (a chip for demodulating and decoding a digital television channel and outputting a TS stream), the channel demodulation and the channel decoding are performed, then a TS stream (code stream) is generated, the TS stream enters a Demux module for demultiplexing, and the TS stream is divided into a video signal code stream, a sound signal code stream and auxiliary information (such as PCR program clock reference).
The Video signal code stream enters a Video Decoder module to perform Video decoding to generate an image original signal, and then enters a Video process module to perform image scaling, image quality processing and the like, and then the image original signal is output to a liquid crystal display for display. The sound signal code stream enters an Audio Decoder module to perform sound decoding to generate a sound original signal, then enters an Audio process module to perform sound filtering, equalization processing, amplification and other processing, and then is output to a power amplifier and finally is output through a loudspeaker. PCR is a program clock reference for clock recovery, for synchronous processing of images and sound. The MCU (microprocessor) controls Tuner and Demod via I2C (Inter-Integrated Circuit, two-way synchronous Serial bus). A Program guide database is used for management of searching for a channel, switching channels, and the like.
Furthermore, the BER (bit error rate) of the TS stream in the Demod module can represent the bit error rate of the digital television signal, and when the bit error rate is higher than 2 multiplied by 10-4I.e. the representative picture has a mosaic. When the digital television signal is interfered by the HDMI signal, the BER is increased, the MCU monitors the BER in real time through the I2C, and when the BER is found to be larger than a set first threshold value, the digital signal quality is considered to be poor or the digital signal is possibly interfered by the HDMI, the HDMI signal is turned off first. The BER is then determined again, and when the HDMI signal is turned off, the BER becomes small (good), which indicates that the HDMI signal is actually caused by HDMI signal interference, i.e., the state of turning off the HDMI signal is kept unchanged, so that the HDMI signal is not interfered with the digital television signal. If the HDMI signal is turned off, the BER is not improved (decreased), indicating that the HDMI signal is not the HDMI signalAs a result of the disturbance, the HDMI signal can be turned on. When the HDMI signal is actually closed due to HDMI signal interference, whether a user presses a signal source key of a remote controller or a switching signal source key of a key is monitored in real time, and when the user presses the signal source key, the HDMI signal is turned on, so that the speed of switching the HDMI signal source for the user cannot be slowed down. As the user needs 1-2 seconds in the process of pressing the information source key and then switching to the HDMI information source, the HDMI signal can be predictively opened in advance for 1-2 seconds, and the time for switching the HDMI can not be influenced. When detecting that the user only presses the source key but does not switch to other sources or remains in a DTV source (Digital Television source), the HDMI signal is closed again.
In the invention, besides the judgment of the BER, the SSI (signal strength) can also be judged, and the SSI can be obtained through a Tuner module in the figure 2; SSI represents the strength of digital television signals, and when the SSI is larger, the representative signal amplitude is larger, so that the digital television signals are not easily interfered by HDMI signals; when the SSI value is small, it represents that the signal amplitude is small, and it is easily interfered by the HDMI signal. The HDMI signal is not closed when the digital television signal is strong, and the HDMI signal is only closed when the digital television signal is weak, so that the digital television signal can be prevented from being interfered by the HDMI when the signal is weak, the HDMI signal can also be prevented from being closed when the digital television signal is strong, the HDMI signal switching time can be increased by 1-3 seconds, the user experience is poor, and the operation delay feeling is caused.
Further, the closing the HDMI signal specifically includes: disconnecting a pull-up terminal resistor of the HDMI differential line receiving end; specifically, since HDMI is differential line transmission (differential transmission is a signal transmission technology, and is different from the traditional method of one signal line and one ground line, differential transmission transmits signals on both lines, the amplitudes of the two signals are the same, the phases of the two signals are opposite, the signals transmitted on the two lines are differential signals), and the signals are also output by a constant current source, and the receiving end is connected to a power supply through a termination resistor to provide a supply resistor, only a pull-up termination resistor, such as R in fig. 3, of the receiving end of the HDMI differential line needs to be disconnectedT. In addition, another way to turn off the HDMI signal is: by lowering HPD (Hot Plug Detect) turns off the HDMI signal.
Specifically, the method for turning off the HDMI signal is shown in fig. 3, Transmitter in fig. 3 represents the Transmitter, Receiver in fig. 3 represents the Receiver, since HDMI is differential line transmission, the TDMS signal (a differential signal mechanism that can encode pixel data and transmit through serial connection) of HDMI is current-driven type, and power is pulled up at the Receiver (i.e. power is provided at the Receiver), therefore, only the register is needed to cut off R of the HDMI Receiver in fig. 3TThe power supply is just needed. In addition, the method for closing the HDMI signal is better by pulling down the HPD, and the switching to the HDMI signal source is quicker; the HDMI differential signal is closed by the method, and any influence on the equipment end is avoided.
Further, as shown in fig. 4, the signal interference processing process of the present invention is implemented as follows:
step S101, completing software initialization after the digital television is started;
step S102, judging whether the digital television is under a DTV information source or not, if so, monitoring the bit error rate or the signal intensity of a digital television signal code stream (the following processes are continuously executed under the digital television information source, and if not, the processes are not executed in a non-digital television information source); if not, returning to continue to execute the step S102;
step S103, monitoring the bit error rate of a digital television signal code stream, or monitoring the signal intensity of a digital television;
step S104, judging whether the bit error rate is greater than a first threshold value or whether the signal intensity is lower than a second threshold value; executing the step S105 when one of the conditions is satisfied, and returning to continue executing the step S103 when the conditions are not satisfied;
step S105, when the bit error rate is larger than a first threshold value, the HDMI signal is closed; or when the signal intensity is lower than a second threshold value, the HDMI signal is closed;
step S106, after the HDMI signal is closed, whether the bit error rate of the digital television signal code stream is larger than the first threshold value or not is detected again, or whether the signal intensity rate of the digital television is lower than the second threshold value or not is detected again;
when the bit error rate is not greater than the first threshold, or the signal strength rate is not lower than the second threshold, executing step S107; when the bit error rate is greater than the first threshold or the signal strength rate is lower than the second threshold, executing step S111;
step S107, keeping the state of closing the HDMI signal, detecting that BER is not more than a first threshold value again, indicating that the interference is caused to the digital television signal by the HDMI signal, and keeping the HDMI signal in the closed state when the BER is reduced after the HDMI signal is closed; after the HDMI signal is closed, if the SSI detected again is not smaller than the second threshold, the fact that the digital television signal is interfered by the HDMI signal is indicated, and after the HDMI signal is closed, the SSI is increased, and the HDMI signal is kept in a closed state;
step S108, monitoring whether a user presses an information source key or a switching information source key of a remote controller in real time; if yes, executing step S109;
s109, because the user needs 1-2 seconds in the process of pressing the source key or the switching source key of the key and then switching to the HDMI source, the HDMI signal can be predictively opened in advance for 1-2 seconds, and the time for switching the HDMI is not influenced;
step S110, detecting whether the source selected by the user last is a DTV source, if so, returning to execute step S107; if not, executing step S111;
step S111, opening an HDMI signal; because the BER is still larger than the first threshold value after the HDMI signal is closed, the interference of the digital television signal is not caused by the HDMI signal, and the HDMI signal is opened; if SSI is still lower than the second threshold value after the HDMI signal is turned off, the interference of the digital television signal is not caused by the HDMI signal, and the HDMI signal is turned on; and when the user is detected to exit from the DTV source, the HDMI signal is turned on.
In the invention, because the digital television signal is easily interfered by the HDMI signal when the BER signal is higher or the SSI signal is weaker, whether the HDMI signal is closed or not is determined by dynamically judging the BER or the SSI, the problem that the HDMI signal interferes with the digital television signal can be solved, the use of a user on the HDMI function can not be influenced, if the digital television signal is not dynamically judged, the HDMI signal is closed all the time, although the problem that the HDMI interferes with the digital television can be solved, the time for switching to the HDMI signal source is increased by 2-3 seconds, and the user operation experience is influenced.
Further, in addition to the above signal interference processing method, the simplest control method is: when entering a digital television information source, the HDMI signal is closed; when the digital television signal enters the HDMI signal source, the HDMI signal is turned on, and the digital television signal can be prevented from being interfered by the HDMI signal.
Further, as shown in fig. 5, based on the signal interference processing method, the present invention also provides a digital television, which includes a processor 10, a memory 20 and a display 30. Fig. 5 shows only some of the components of the digital television, but it is to be understood that not all of the shown components are required to be implemented, and that more or fewer components may be implemented instead.
The memory 20 may in some embodiments be an internal storage unit of the digital television, such as a hard disk or a memory of the digital television. The memory 20 may also be an external storage device of the Digital television in other embodiments, such as a plug-in hard disk provided on the Digital television, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash memory Card (Flash Card), and the like. Further, the memory 20 may also include both an internal storage unit and an external storage device of the digital television. The memory 20 is used for storing application software installed in the digital television and various types of data, such as program codes of the installed digital television. The memory 20 may also be used to temporarily store data that has been output or is to be output. In an embodiment, the memory 20 stores a signal interference processing program 40, and the signal interference processing program 40 can be executed by the processor 10, so as to implement the signal interference processing method in the present application.
The processor 10 may be a Central Processing Unit (CPU), a microprocessor or other data Processing chip in some embodiments, and is used for executing the program codes stored in the memory 20 or Processing data, such as executing the signal interference Processing method.
The display 30 may be an LED display, a liquid crystal display, a touch-sensitive liquid crystal display, an OLED (Organic Light-Emitting Diode) touch panel, or the like in some embodiments. The display 30 is used to display information on the digital television and to display a visual user interface. The components 10-30 of the digital television communicate with each other via a system bus.
In one embodiment, when the processor 10 executes the signal interference processing program 40 in the memory 20, the following steps are implemented:
when a digital television program is watched, judging whether the digital television program is interfered by an HDMI signal or not based on the current state information of the digital television signal, wherein the current state information comprises the strength information of the digital television signal or the code stream information of the digital television signal;
and when the judgment result is yes, closing the HDMI signal.
The judging whether the digital television signal is interfered by the HDMI signal or not based on the current state information of the digital television signal specifically comprises the following steps:
monitoring the bit error rate of a digital television signal code stream in real time when a digital television program is watched, and preliminarily confirming the interference of the HDMI signal when the bit error rate is greater than a first threshold value; or
When a digital television program is watched, the signal intensity of the digital television is monitored in real time, and when the signal intensity is lower than a second threshold value, the HDMI signal interference is preliminarily confirmed.
When the judgment is yes, after the HDMI signal is closed, the method further comprises:
detecting whether the current bit error rate of the digital television signal code stream is greater than the first threshold value;
if not, keeping the HDMI signal in a closed state;
if yes, the HDMI signal is turned on.
When the judgment is yes, after the HDMI signal is closed, the method further comprises:
detecting whether the current signal intensity rate of the digital television is lower than the second threshold value;
if not, keeping the HDMI signal in a closed state;
if yes, the HDMI signal is turned on.
After the closing the HDMI signal, the method further comprises:
and after receiving an operation instruction that an information source key or a switching information source key of a key of the remote controller is pressed, opening the HDMI signal.
After receiving an operation instruction that an information source key or a switching information source key of a key of the remote controller is pressed, the method further comprises the following steps:
when the signal source switching indication is to turn on a DTV signal source, the HDMI signal is turned off again;
the closing of the HDMI signal specifically includes: and disconnecting the pull-up terminal resistor of the HDMI differential line receiving end.
The signal interference processing method further comprises the following steps:
if the current digital television program is a DTV information source, acquiring the current state information of the digital television signal;
and when the HDMI signal is turned on when the exit of the DTV signal source is received.
The present invention also provides a storage medium, wherein the storage medium stores a signal interference processing program, and the signal interference processing program realizes the steps of the signal interference processing method when being executed by a processor.
In summary, the present invention provides a signal interference processing method, a digital television and a storage medium, wherein the method includes: when a digital television program is watched, judging whether the digital television program is interfered by an HDMI signal or not based on the current state information of the digital television signal, wherein the current state information comprises the strength information of the digital television signal or the code stream information of the digital television signal; and when the judgment result is yes, closing the HDMI signal. The invention decides whether to close the HDMI signal by dynamically judging the bit error rate or the signal intensity of the digital television signal code stream, thereby not only solving the problem that the HDMI signal interferes with the digital television signal, but also not influencing the use of the HDMI function of a user.
Of course, it will be understood by those skilled in the art that all or part of the processes of the methods of the above embodiments may be implemented by a computer program instructing relevant hardware (such as a processor, a controller, etc.), and the program may be stored in a computer readable storage medium, and when executed, the program may include the processes of the above method embodiments. The storage medium may be a memory, a magnetic disk, an optical disk, etc.
It is to be understood that the invention is not limited to the examples described above, but that modifications and variations may be effected thereto by those of ordinary skill in the art in light of the foregoing description, and that all such modifications and variations are intended to be within the scope of the invention as defined by the appended claims.
Claims (10)
1. A signal interference processing method, comprising:
when a digital television program is watched, judging whether the digital television program is interfered by an HDMI signal or not based on the current state information of the digital television signal, wherein the current state information comprises the strength information of the digital television signal or the code stream information of the digital television signal;
and when the judgment result is yes, closing the HDMI signal.
2. The signal interference processing method according to claim 1, wherein the determining whether the digital television signal is interfered by the HDMI signal based on the current status information of the digital television signal specifically comprises:
when a digital television program is watched, monitoring the bit error rate of a digital television signal code stream in real time, and preliminarily confirming the interference of the HDMI signal when the bit error rate is greater than a first threshold value; or
When a digital television program is watched, the signal intensity of the digital television is monitored in real time, and when the signal intensity is lower than a second threshold value, the HDMI signal interference is preliminarily confirmed.
3. The signal interference processing method according to claim 2, wherein when the HDMI signal is turned off, the method further comprises:
detecting whether the current bit error rate of the digital television signal code stream is greater than the first threshold value;
if not, keeping the HDMI signal in a closed state;
if yes, the HDMI signal is turned on.
4. The signal interference processing method according to claim 2, wherein when the HDMI signal is turned off, the method further comprises:
detecting whether the current signal intensity rate of the digital television is lower than the second threshold value;
if not, keeping the HDMI signal in a closed state;
if yes, the HDMI signal is turned on.
5. The signal interference processing method according to claim 1, wherein after the HDMI signal is turned off, the method further comprises:
and after receiving an operation instruction that an information source key or a switching information source key of a key of the remote controller is pressed, opening the HDMI signal.
6. The signal interference processing method of claim 5, wherein after receiving an operation command for switching a source key of a remote controller or a key to be pressed, the method further comprises:
when the signal source switching indication is to turn on a DTV signal source, the HDMI signal is turned off again;
the closing of the HDMI signal specifically includes: and disconnecting the pull-up terminal resistor of the HDMI differential line receiving end.
7. The signal interference processing method of claim 1, further comprising:
and if the current digital television program is the DTV information source, acquiring the current state information of the digital television signal.
8. The signal interference processing method of claim 7, further comprising:
and when the HDMI signal is turned on when the exit of the DTV signal source is received.
9. A digital television, comprising: memory, a processor and a signal interference handling program stored on the memory and executable on the processor, the signal interference handling program when executed by the processor implementing the steps of the signal interference handling method according to any of claims 1-8.
10. A storage medium, characterized in that the storage medium stores a signal interference processing program, which when executed by a processor implements the steps of the signal interference processing method according to any one of claims 1 to 8.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691754A (en) * | 2021-08-17 | 2021-11-23 | 浙江大华技术股份有限公司 | Signal transmission control method and device, electronic equipment and storage medium |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998015120A1 (en) * | 1996-10-02 | 1998-04-09 | Allen Leroy Limberg | Ntsc co-channel interference detectors responsive to received q-channel signals in digital tv signal receivers |
| CN2501270Y (en) * | 2001-09-25 | 2002-07-17 | 永麒科技股份有限公司 | Automatic RF signal switching device |
| CN103686258A (en) * | 2013-12-05 | 2014-03-26 | 华为终端有限公司 | Set top box and method for detecting interference signals of set top box |
| JP2015061139A (en) * | 2013-09-17 | 2015-03-30 | 株式会社テーケィアール | Receiver, tuner module, and specification method of interference source channel |
| CN105187903A (en) * | 2015-09-17 | 2015-12-23 | 深圳市九洲电器有限公司 | Wireless management method and system in set top box |
| CN105763874A (en) * | 2016-04-22 | 2016-07-13 | 南京睿高宇信息科技有限公司 | Signal quality monitoring device of cable digital television radio frequency signal and monitoring method thereof |
| CN105847725A (en) * | 2015-02-11 | 2016-08-10 | 深圳市创达天盛智能科技有限公司 | Method for improving WIFI performance of HDMI (High Definition Multimedia Interface) television stick |
| CN107222285A (en) * | 2017-04-07 | 2017-09-29 | 华为技术有限公司 | Improve the method and terminal of WIFI performances |
-
2019
- 2019-08-13 CN CN201910743016.4A patent/CN112399097B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1998015120A1 (en) * | 1996-10-02 | 1998-04-09 | Allen Leroy Limberg | Ntsc co-channel interference detectors responsive to received q-channel signals in digital tv signal receivers |
| CN2501270Y (en) * | 2001-09-25 | 2002-07-17 | 永麒科技股份有限公司 | Automatic RF signal switching device |
| JP2015061139A (en) * | 2013-09-17 | 2015-03-30 | 株式会社テーケィアール | Receiver, tuner module, and specification method of interference source channel |
| CN103686258A (en) * | 2013-12-05 | 2014-03-26 | 华为终端有限公司 | Set top box and method for detecting interference signals of set top box |
| CN105847725A (en) * | 2015-02-11 | 2016-08-10 | 深圳市创达天盛智能科技有限公司 | Method for improving WIFI performance of HDMI (High Definition Multimedia Interface) television stick |
| CN105187903A (en) * | 2015-09-17 | 2015-12-23 | 深圳市九洲电器有限公司 | Wireless management method and system in set top box |
| CN105763874A (en) * | 2016-04-22 | 2016-07-13 | 南京睿高宇信息科技有限公司 | Signal quality monitoring device of cable digital television radio frequency signal and monitoring method thereof |
| CN107222285A (en) * | 2017-04-07 | 2017-09-29 | 华为技术有限公司 | Improve the method and terminal of WIFI performances |
Non-Patent Citations (1)
| Title |
|---|
| 郑文庆;: "模拟数字电视信号同缆传输的调试问题", 中国有线电视, no. 12 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113691754A (en) * | 2021-08-17 | 2021-11-23 | 浙江大华技术股份有限公司 | Signal transmission control method and device, electronic equipment and storage medium |
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