CN111131797A - Positioning method, signal processing method and digital video conversion device - Google Patents
Positioning method, signal processing method and digital video conversion device Download PDFInfo
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- CN111131797A CN111131797A CN201911377467.7A CN201911377467A CN111131797A CN 111131797 A CN111131797 A CN 111131797A CN 201911377467 A CN201911377467 A CN 201911377467A CN 111131797 A CN111131797 A CN 111131797A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N7/00—Television systems
- H04N7/20—Adaptations for transmission via a GHz frequency band, e.g. via satellite
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/45—Management operations performed by the client for facilitating the reception of or the interaction with the content or administrating data related to the end-user or to the client device itself, e.g. learning user preferences for recommending movies, resolving scheduling conflicts
- H04N21/4508—Management of client data or end-user data
- H04N21/4524—Management of client data or end-user data involving the geographical location of the client
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Abstract
The embodiment of the application is applicable to the technical field of information, and provides a positioning method, a signal processing method and digital video conversion equipment, wherein the signal processing method comprises the following steps: receiving a positioning signal transmitted by a positioning satellite and receiving a satellite television signal transmitted by a direct broadcast satellite; analyzing the positioning signal to obtain longitude and latitude information of the current position; matching the longitude and latitude information with preset map data to determine the region to which the current position belongs, wherein the map data is a data set comprising a plurality of position points of at least one region; and processing the satellite television signal according to the region to which the current position belongs. In the embodiment, the analyzed longitude and latitude information is matched with the map data, so that the area to which the current position belongs can be accurately determined, and the accurate positioning of the area to which the current position belongs is realized. On this basis, the embodiment can also realize the precise control of the satellite television signals in the area.
Description
Technical Field
The present application belongs to the field of information technology, and in particular, relates to a positioning method, a signal processing method, and a digital video conversion device.
Background
With the rapid development of scientific technology, especially information technology, people's lives have already entered the digital and information era, and the distribution of satellite broadcast television is accelerated in the process of digitalization and individualization. Although most regions around the world have realized the broadcasting of satellite television, in some special regions, the broadcasting of satellite television programs is influenced by factors such as national relations, geographical positions, urban and rural differences, and the like, so that certain use limitations exist. For example, in a specific area with a tight and complicated relationship, a satellite television program in a country a is not allowed to be played in a country B.
Due to the characteristics of satellite television broadcasting and opening, in the area which can be covered by satellite signals, after receiving the satellite television signals, the conventional satellite television receiver can demodulate the television broadcasts through equipment such as a set top box and the like, so that the normal playing is realized. Therefore, if the television program is to be monitored at the satellite terminal, the television program played in a certain area is individually encrypted or turned off, which is very difficult in technology and high in cost.
Disclosure of Invention
In view of this, embodiments of the present application provide a positioning method, a signal processing method, and a digital video conversion device, which can implement management and control on satellite television signals in a specific area.
A first aspect of an embodiment of the present application provides a positioning method, which is applied to a terminal device, and the positioning method includes:
receiving a positioning signal transmitted by a positioning satellite;
analyzing the positioning signal to obtain longitude and latitude information of the current position;
matching the longitude and latitude information with preset map data, wherein the map data is a data set comprising a plurality of position points of at least one area;
and if the longitude and latitude information is matched in the map data, determining the area to which the current position belongs according to the map data.
A second aspect of the embodiments of the present application provides a signal processing method applied to a digital video conversion device, the signal processing method including:
receiving a positioning signal transmitted by a positioning satellite and receiving a satellite television signal transmitted by a direct broadcast satellite;
analyzing the positioning signal to obtain longitude and latitude information of the current position;
matching the longitude and latitude information with preset map data to determine the region to which the current position belongs, wherein the map data is a data set comprising a plurality of position points of at least one region;
and processing the satellite television signal according to the region to which the current position belongs.
A third aspect of embodiments of the present application provides a digital video conversion apparatus, including:
the positioning chip is used for receiving a positioning signal transmitted by a positioning satellite, analyzing the positioning signal and acquiring longitude and latitude information of the current position;
the main chip is used for matching the longitude and latitude information with preset map data to determine the region to which the current position belongs, and the map data is a data set comprising a plurality of position points of at least one region;
the tuner is used for receiving satellite television signals and converting the satellite television signals into intermediate frequency signals;
and the demodulator is used for processing the intermediate frequency signal and outputting a television program corresponding to the intermediate frequency signal when the area to which the current position belongs is a target area contained in the map data.
A fourth aspect of the embodiments of the present application provides a positioning apparatus, which is applied to a terminal device, and the positioning apparatus includes:
the receiving module is used for receiving a positioning signal transmitted by a positioning satellite;
the analysis module is used for analyzing the positioning signal to obtain longitude and latitude information of the current position;
the matching module is used for matching the longitude and latitude information with preset map data, wherein the map data is a data set comprising a plurality of position points of at least one area;
and the determining module is used for determining the area of the current position according to the map data if the longitude and latitude information is matched in the map data.
A fifth aspect of the embodiments of the present application provides a signal processing apparatus applied to a digital video conversion device, the signal processing apparatus including:
the positioning signal receiving module is used for receiving positioning signals transmitted by a positioning satellite;
the satellite television signal receiving module is used for receiving satellite television signals transmitted by a direct broadcast satellite;
the positioning signal analysis module is used for analyzing the positioning signal to obtain longitude and latitude information of the current position;
the latitude and longitude information matching module is used for matching the latitude and longitude information with preset map data to determine the region to which the current position belongs, and the map data is a data set comprising a plurality of position points of at least one region;
and the satellite television signal processing module is used for processing the satellite television signal according to the region to which the current position belongs.
A sixth aspect of embodiments of the present application provides a digital video transform apparatus, comprising a memory, a processor, and a computer program stored in the memory and executable on the processor, wherein the processor implements the positioning method according to the first aspect or implements the signal processing method according to the second aspect when executing the computer program.
A seventh aspect of embodiments of the present application provides a computer-readable storage medium, which stores a computer program, and when the computer program is executed by a processor, the computer program implements the positioning method according to the first aspect, or implements the signal processing method according to the second aspect.
An eighth aspect of embodiments of the present application provides a computer program product, which, when running on a digital video conversion device, causes the digital video conversion device to perform the positioning method according to the first aspect or to perform the signal processing method according to the second aspect.
Compared with the prior art, the embodiment of the application has the following advantages:
according to the embodiment of the application, the longitude and latitude information of the current position can be obtained after the positioning signal is analyzed by receiving the positioning signal transmitted by the positioning satellite, and the region to which the current position belongs can be determined according to the map data by matching the longitude and latitude information with the preset map data. In the embodiment, the analyzed longitude and latitude information is matched with the map data, so that the area to which the current position belongs can be accurately determined, and the accurate positioning of the area to which the current position belongs is realized.
On the basis of accurately positioning the region to which the current position belongs, the method can also realize accurate control of satellite television signals in the region, can meet the requirements of accurate positioning of the region and television signal control by only modifying software design under the condition of not increasing hardware cost, and is convenient to use and low in cost.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings used in the embodiments or the description of the prior art will be briefly described below. It is obvious that the drawings in the following description are only some embodiments of the application, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
FIG. 1 is a schematic flow chart diagram illustrating the steps of a positioning method according to an embodiment of the present application;
FIG. 2 is a schematic illustration of map data for one embodiment of the present application;
FIG. 3 is a flow chart illustrating steps of a signal processing method according to an embodiment of the present application;
fig. 4 is a schematic diagram of an internal circuit configuration of a digital video converter according to an embodiment of the present application;
FIG. 5 is a schematic view of a positioning device according to an embodiment of the present application;
FIG. 6 is a schematic diagram of a signal processing apparatus according to an embodiment of the present application;
fig. 7 is a schematic diagram of a digital video conversion device according to an embodiment of the present application.
Detailed Description
In the following description, for purposes of explanation and not limitation, specific details are set forth, such as particular system structures, techniques, etc. in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to one skilled in the art that the present application may be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known systems, devices, circuits, and methods are omitted so as not to obscure the description of the present application with unnecessary detail.
At present, some set top boxes on the market can simultaneously receive high-definition terrestrial digital signals, cable digital signals and satellite positioning signals, but no solution for finely positioning the boundary line of a certain area (such as the boundary line corresponding to a map) exists. Specifically, the prior art cannot locate the precise position of the satellite television program use area, and particularly cannot locate the geographical position boundary between regions.
On the other hand, since the usage rights of the satellite high-definition television signals are different, the authorized regions of the satellite high-definition television signals are different on adjacent boundaries (especially for different countries). Meanwhile, media such as broadcast television are used as a propaganda tool, and countries have strict supervision requirements on information spread through the media such as the broadcast television. If the use authority of the broadcast television in different areas is to be distinguished, the problem of accurately positioning each area is a problem to be solved. When solving this problem, if a large number of independent chipsets are configured to compose the set-top box, the cost is high. On the basis of the existing set top box scheme, the positioning chip is added, so that the position of the set top box can be positioned, and the control of the broadcast television program is realized according to the position information obtained by positioning.
However, when a general positioning chip, such as a positioning chip of a GPS, is used as a receiver to perform positioning, only a range can be located, that is, a circular area with a radius of several meters is determined within the accuracy range provided by the receiver itself, and the positioning result is not a point or a line. If a description of the trajectory of the location position is desired, a satellite positioning receiver is required to move the location and to trace points, or in theory a positioning receiver is arranged at each trajectory point. This leads to the following problems:
1) because the application occasion of the satellite positioning receiver arranged in the set top box is fixed, the satellite positioning receiver cannot be used as a mobile positioning receiver for continuous positioning and point tracing in practice, namely, the application scene does not meet the mobile positioning requirement;
2) because continuous position points need to be drawn, if fixed dense satellite positioning receivers are used for positioning and pointing, absolute high cost is input, and the popularization requirement of a radio and television system is not met.
On the basis of this, if it is desired to solve the precise positioning, although it can be realized by adding the positioning chip, it is not possible to perform the positioning at all by randomly arranging the dense positioning chips in a relatively small area (e.g., rural area, border area). Therefore, it is a technical problem to be solved how to determine whether these small-range regions, especially the boundary regions between national borders or regions, belong to the regions allowing legal use of broadcast television signals by using a satellite positioning rf chip to accurately position these small-range regions.
In order to solve the problems and realize the management and control of the allowable use range of the satellite high-definition television signals on adjacent boundaries (especially boundary areas between different countries or regions), the core concept of the application is that the latitude and longitude information obtained by positioning is matched with the latitude and longitude information in the preset map data, so that the region to which the current position belongs is accurately determined, and the use permission of the high-definition television signals in different regions is managed. The solution provided by the application has the advantages of strong function, convenience in use, lower cost and the like.
The technical solution of the present application will be described below by way of specific examples.
Referring to fig. 1, a schematic flow chart illustrating steps of a positioning method according to an embodiment of the present application is shown, which may specifically include the following steps:
s101, receiving a positioning signal transmitted by a positioning satellite;
it should be noted that the method can be applied to a terminal device. That is, the execution main body of this embodiment is the terminal device, and the terminal device processes the received positioning signal to realize the accurate positioning of the current position of the terminal device.
The terminal device in this embodiment may be a mobile terminal device such as a mobile phone and a tablet computer, or may be other electronic devices integrated with a positioning function, and the specific type of the terminal device is not limited in this embodiment.
The following description will be made by taking a terminal device as a digital video converter (STB) as an example. A digital video conversion device, commonly referred to as a set-top box or set-top box, is a device that connects a television set to an external signal source. Which can convert the compressed signal into television content and display it on a television set. The signals processed by the set-top box may come from cable, satellite antenna, broadband network, terrestrial broadcast, and so on.
In this embodiment, a positioning chip may be added to the set-top box, and the positioning chip receives a positioning signal transmitted by a positioning satellite, so as to position the set-top box.
S102, analyzing the positioning signal to obtain longitude and latitude information of the current position;
in this embodiment, after receiving a positioning signal transmitted by a positioning satellite, a positioning chip in the set-top box may analyze the positioning signal to obtain longitude and latitude information of a current location, where the current location is the location where the set-top box is placed.
The positioning signal is analyzed to obtain the corresponding longitude and latitude information, which is a mature technology at present and is not described in detail in this embodiment.
S103, matching the longitude and latitude information with preset map data, wherein the map data is a data set comprising a plurality of position points of at least one area;
in the present embodiment, the preset map data may be a data set containing geographic data of a certain area or a plurality of areas. For any one area, the map data corresponding to the area can be regarded as a set of a plurality of position points.
Therefore, in order to realize accurate positioning of the current position, after the longitude and latitude information of the current position is analyzed through the positioning signal, the longitude and latitude information can be matched with the map data, and the area to which the current position belongs is determined by matching the corresponding position point in the map data.
In a specific implementation, for the longitude and latitude information obtained by the analysis, a target location point may be determined according to the longitude and latitude information, and then it is determined whether the target location point is a location point in an area included in the map data.
For example, from certain longitude data and latitude data, a location point on the earth can be uniquely determined. However, whether the location point belongs to a certain country or region cannot be directly determined. Therefore, the determined location point can be matched with the preset map data, and since the map data contains detailed longitude and latitude information of a plurality of location points, whether the current location is within a certain country or region can be judged through the location point obtained by matching in the map data.
And S104, if the longitude and latitude information is matched in the map data, determining the area to which the current position belongs according to the map data.
In this embodiment, if the target location point is a location point included in the map data, it may be determined that the longitude and latitude information of the current location is matched in the map data. At this time, the belonging area of the current position may be determined from the map data.
In a specific implementation, because the map data includes longitude and latitude information of a plurality of location points of one or more areas, the area to which the current location belongs, that is, the area in which the set-top box is located, can be determined by determining the area to which the target location point corresponding to the matched longitude and latitude information belongs in the map data.
Fig. 2 is a schematic diagram of map data in the present embodiment. If the map data is the geographical location data of the area G corresponding to the shaded portion in fig. 2, after the latitude and longitude information of a certain location point is obtained through the positioning signal analysis, for example, the location point is the point C or the point D in fig. 2, it may be determined whether the point C or the point D belongs to the range of the area G by matching the latitude and longitude information of the point C or the point D with the map data of the area G.
In the embodiment of the application, the latitude and longitude information of the current position can be obtained after the positioning signal is analyzed by receiving the positioning signal transmitted by the positioning satellite, and the region to which the current position belongs can be determined according to the map data by matching the latitude and longitude information with the preset map data. In the embodiment, the analyzed longitude and latitude information is matched with the map data, so that the area to which the current position belongs can be accurately determined, and the accurate positioning of the area to which the current position belongs is realized.
Referring to fig. 3, a schematic flow chart illustrating steps of a signal processing method according to an embodiment of the present application is shown, which may specifically include the following steps:
s301, receiving a positioning signal transmitted by a positioning satellite, and receiving a satellite television signal transmitted by a direct broadcast satellite;
it should be noted that the method can be applied to a digital video conversion device (set-top box). That is, the executing main body of the embodiment is the set top box, and a positioning chip is configured in the set top box for receiving a positioning signal transmitted by a positioning satellite, so that the position of the set top box is accurately positioned, and the satellite television signal can be conveniently controlled according to the actual requirement of the region where the set top box is located.
In this embodiment, after the set-top box is powered on, the set-top box may receive a positioning signal through a built-in positioning chip, determine an area where the set-top box is located according to an analysis result of the positioning signal, and then receive a satellite television signal transmitted by a live broadcast satellite according to whether the area is an area where reception or playing of a satellite television program is allowed.
Or, after the set-top box is powered on, the received satellite television signal may be processed by receiving a positioning signal transmitted by a positioning satellite and a satellite television signal transmitted by a direct broadcast satellite, and then determining whether the area where the set-top box is located is an area where a corresponding satellite television program is allowed to be played according to an analysis result of the positioning signal.
This embodiment will be described later by taking the latter case as an example. The set-top box receives the positioning signal and the satellite television signal at the same time, and processes the received satellite television signal according to the analysis result of the positioning signal.
S302, analyzing the positioning signal to obtain longitude and latitude information of the current position;
in this embodiment, after receiving a positioning signal transmitted by a positioning satellite, a positioning chip in the set-top box may analyze the positioning signal to obtain longitude and latitude information of a current location, where the current location is the location where the set-top box is placed.
S303, matching the longitude and latitude information with preset map data to determine the region to which the current position belongs, wherein the map data is a data set comprising a plurality of position points of at least one region;
in the present embodiment, the preset map data may be a data set containing geographic data of a certain area or a plurality of areas. For any one area, the map data corresponding to the area can be regarded as a set of a plurality of position points.
In order to accurately locate the current position, the longitude and latitude information obtained by analysis may be determined as a target position point according to the longitude and latitude information, and then it is determined whether the target position point is a position point in an area included in the map data.
If the target location point is a location point included in the map data, the area of the target location point in the map data can be determined directly according to the map data.
Since step S303 of the present embodiment is similar to step S203 of the previous embodiment, reference may be made to each other, and details of this embodiment are not repeated.
S304, processing the satellite television signal according to the area to which the current position belongs.
In this embodiment, processing the satellite television signal according to the area to which the current position belongs may include playing a television program corresponding to the satellite television signal, or not playing the television program.
In a specific implementation, if the area to which the current position belongs is a target area included in the map data, the set-top box may be controlled to lock the received satellite television signal and not play a television program corresponding to the signal. The target area may be an area where the satellite television signal needs to be managed. The specific range of the target area may be determined according to the specific regulatory requirements of the regulatory body, which is not limited in this embodiment.
If the area to which the current position belongs is not the target area contained in the map data, that is, the area position to which the set-top box currently belongs to an area which allows the satellite television signal to be received and can be normally played, at this time, the set-top box can demodulate the received satellite television signal and output a television program corresponding to the signal.
In a specific implementation, the set-top box needs to perform frequency conversion on a received satellite television signal to obtain an intermediate frequency signal meeting the requirement of a receiving frequency band of the current set-top box, and then process the intermediate frequency signal, for example, perform amplification, a/D conversion (analog-to-digital conversion), demodulation, and the like on the intermediate frequency signal, and output a television program corresponding to the intermediate frequency signal.
It should be noted that, for different types of received television signals, corresponding frequency conversion and demodulation processes are different, and this embodiment is not particularly limited to this.
In the embodiment of the application, the positioning chip is configured in the set top box and used for receiving the positioning signal transmitted by the positioning satellite, the longitude and latitude information of the current position can be obtained after the positioning signal is analyzed, and the area to which the current position belongs can be determined by matching the longitude and latitude information with the preset map data, so that the satellite television signal can be controlled according to the specific supervision requirement of the area. According to the method and the device, on the basis of accurately positioning the region to which the set top box belongs, accurate control of satellite television signals in the region can be achieved, the requirements of accurate positioning of the region and television signal control can be met only by modifying software design under the condition that hardware cost is not increased, use is convenient, and cost is low.
It should be noted that, the sequence numbers of the steps in the foregoing embodiments do not mean the execution sequence, and the execution sequence of each process should be determined by the function and the inherent logic of the process, and should not constitute any limitation on the implementation process of the embodiments of the present application.
Referring to fig. 4, a schematic diagram of an internal circuit structure of a digital video converter according to an embodiment of the present application is shown, where the digital video converter may include: a main chip 401, a demodulator 402, a tuner 403, a network controller 404, a network interface 405, a Random Access Memory (RAM) 406, a FLASH Memory (FLASH)407, a storage device interface 408, a command input interface 409, a communication interface 410, a condition processing module 411, an audio/video output interface 412, a positioning chip 413, and a power divider unit 414; wherein:
the positioning chip is used for receiving a positioning signal transmitted by a positioning satellite, analyzing the positioning signal and acquiring longitude and latitude information of the current position;
the main chip is used for matching the longitude and latitude information with preset map data to determine the region to which the current position belongs, and the map data is a data set comprising a plurality of position points of at least one region;
the tuner is used for receiving satellite television signals and converting the satellite television signals into intermediate frequency signals;
and the demodulator is used for processing the intermediate frequency signal and outputting a television program corresponding to the intermediate frequency signal when the area to which the current position belongs is a target area contained in the map data.
For ease of understanding, the above units will be described separately below with reference to fig. 4.
The set-top box main chip is a core component of the set-top box and is matched with other units to realize all functions of the set-top box together.
The demodulator is in two-way communication with the main chip of the set-top box and the tuner respectively, and is used for amplifying, A/D converting and demodulating three television signals of a ground digital signal, a cable digital signal, an analog signal and the like in an intermediate frequency form. The TS signal is output after the ground digital signal and the wired digital signal in the intermediate frequency form are amplified, A/D converted and demodulated, and the video signal and the audio signal are output through a BT656 bus and an IIS bus respectively after the analog television signal in the intermediate frequency form is amplified, A/D converted and demodulated.
The tuner is used for receiving three television signals, namely a ground digital signal, a cable digital signal, an analog signal and the like in a radio frequency form, and converting the radio frequency signal into an intermediate frequency signal in a down-conversion mode;
and the network controller is respectively connected with the main chip of the set top box and the network interface, and the network interface is connected with the Internet network to complete the data receiving and transmitting of the IPTV.
The positioning chip outputs a position signal obtained by resolving and analyzing the satellite positioning signal to the main chip and is in one-way communication with the main chip; the positioning chip can be a radio frequency baseband integrated chip, and can also be composed of a radio frequency single chip and a baseband single chip.
And the power divider unit is used for combining and power dividing the satellite television signal and the satellite positioning signal, respectively sending the television signal to the tuner and sending the positioning signal to the positioning radio frequency chip or the baseband radio frequency integrated chip.
The storage unit is in two-way communication with the main chip of the set-top box and can comprise a RAM and a FLASH. The RAM is used for providing program operation and data cache space and at least comprises one of SDRAM and DDR SDRAM; the FLASH is used for program data and application data storage and comprises at least one of NOR FLASH and NAND FLASH.
And the command input interface is used for receiving input information and at least comprises one of an infrared receiving device and a front panel.
And the communication interface is connected with the television module and is used for transmitting control information and state information.
And the condition processing module is in two-way communication with the main chip of the set-top box and at least comprises one of a smart card interface and a card-free CA security chip.
The audio and Video output interface is used for outputting audio signals and Video signals and at least comprises one of CVBS, HDMI, YPbPr, VGA, S-Video and SPDIF; if the HDMI interface is included, the HDMI interface can be connected with the television module to transmit audio and video data, control information and state information.
The network interface is an RJ45 network interface, and the communication interface is an RS232 interface.
The storage device interface at least comprises one of a USB interface, an SD/MMC card interface, an IDE interface and a SATA interface.
The set-top box can be connected with the Internet through the network controller and the RJ45 network port, so that the set-top box has a bidirectional function, and can realize bidirectional functions of video on demand, network games, information browsing, online shopping and the like. In addition, the set top box in this embodiment can also realize standard network streaming media playing such as MPEG4, h.264, AVS, VC-1, etc., and realize IPTV function.
In a specific implementation, the positioning and sealing unit 400 can seal the condition processing module, the satellite positioning chip, and the main chip together for positioning calculation and other specific service processing. The satellite positioning chip can be a radio frequency chip, a baseband chip or a radio frequency baseband integrated chip.
For the positioning function and the signal processing function implemented by the set top box provided in this embodiment, reference may be made to descriptions of corresponding positioning methods and signal processing methods in the foregoing embodiments, and details of this embodiment are not described again.
Referring to fig. 5, a schematic diagram of a positioning apparatus according to an embodiment of the present application is shown, where the positioning apparatus may be applied to a terminal device, and specifically includes the following modules:
a receiving module 501, configured to receive a positioning signal transmitted by a positioning satellite;
the analyzing module 502 is configured to analyze the positioning signal to obtain longitude and latitude information of the current location;
a matching module 503, configured to match the latitude and longitude information with preset map data, where the map data is a data set including a plurality of location points of at least one area;
a determining module 504, configured to determine, according to the map data, an area to which the current location belongs if the longitude and latitude information is matched in the map data.
In this embodiment of the present application, the matching module 503 may specifically include the following sub-modules:
the target position point determining submodule is used for determining a target position point according to the longitude and latitude information;
and the target position point judgment submodule is used for judging whether the target position point is a position point in an area contained in the map data, and if the target position point is a position point contained in the map data, judging that the longitude and latitude information is matched in the map data.
In this embodiment of the application, the determining module 504 may specifically include the following sub-modules:
and the affiliated area determining submodule is used for determining the affiliated area of the target position point corresponding to the latitude and longitude information in the map data.
Referring to fig. 6, a schematic diagram of a signal processing apparatus according to an embodiment of the present application is shown, where the signal processing apparatus may be applied to a digital video conversion device, and specifically may include the following modules:
a positioning signal receiving module 601, configured to receive a positioning signal transmitted by a positioning satellite;
a satellite television signal receiving module 602, configured to receive a satellite television signal transmitted by a direct broadcast satellite;
a positioning signal analyzing module 603, configured to analyze the positioning signal to obtain longitude and latitude information of the current location;
a latitude and longitude information matching module 604, configured to match the latitude and longitude information with preset map data, and determine a region to which the current location belongs, where the map data is a data set including a plurality of location points in at least one region;
and the satellite television signal processing module 605 is configured to process the satellite television signal according to the area to which the current position belongs.
In this embodiment, the latitude and longitude information matching module 604 may specifically include the following sub-modules:
the target position point determining submodule is used for determining a target position point according to the longitude and latitude information;
a target position point judgment submodule for judging whether the target position point is a position point in an area contained in the map data;
and the affiliated area determining submodule is used for determining the affiliated area of the target position point in the map data if the target position point is one position point contained in the map data.
In this embodiment, the satellite television signal processing module 605 may specifically include the following sub-modules:
a first control sub-module, configured to control the digital video conversion device to lock the received satellite television signal if the area to which the current position belongs is a target area included in the map data;
and the second control submodule is used for demodulating the received satellite television signal and outputting a television program corresponding to the satellite television signal if the area to which the current position belongs is not the target area contained in the map data.
In this embodiment of the present application, the second control sub-module may specifically include the following units:
the frequency conversion unit is used for carrying out frequency conversion on the satellite television signal to obtain an intermediate frequency signal meeting the receiving frequency band requirement of the digital video conversion equipment;
and the output unit is used for processing the intermediate frequency signal and outputting the television program corresponding to the intermediate frequency signal.
For the apparatus embodiment, since it is substantially similar to the method embodiment, it is described relatively simply, and reference may be made to the description of the method embodiment section for relevant points.
Referring to fig. 7, a schematic diagram of a digital video conversion device according to an embodiment of the present application is shown. As shown in fig. 7, the digital video conversion apparatus 700 of the present embodiment includes: a processor 710, a memory 720, and a computer program 721 stored in said memory 720 and operable on said processor 710. The processor 710, when executing the computer program 721, implements the steps in various embodiments of the above-described positioning method or signal processing method, such as the steps S101 to S104 shown in fig. 1 or the steps S301 to S304 shown in fig. 3. Alternatively, the processor 710, when executing the computer program 721, implements the functions of each module/unit in each device embodiment described above, such as the functions of the modules 501 to 504 shown in fig. 5 or the functions of the modules 601 to 605 shown in fig. 6.
Illustratively, the computer program 721 may be divided into one or more modules/units, which are stored in the memory 720 and executed by the processor 710 to accomplish the present application. The one or more modules/units may be a series of computer program instruction segments capable of performing certain functions, which may be used to describe the execution of the computer program 721 in the digital video conversion device 700. For example, the computer program 721, when implementing the positioning function, may be divided into a receiving module, an analyzing module, a matching module and a determining module, and the specific functions of each module are as follows:
the receiving module is used for receiving a positioning signal transmitted by a positioning satellite;
the analysis module is used for analyzing the positioning signal to obtain longitude and latitude information of the current position;
the matching module is used for matching the longitude and latitude information with preset map data, wherein the map data is a data set comprising a plurality of position points of at least one area;
and the determining module is used for determining the area of the current position according to the map data if the longitude and latitude information is matched in the map data.
Alternatively, the computer program 721 may be divided into a positioning signal receiving module, a satellite tv signal receiving module, a positioning signal analyzing module, a latitude and longitude information matching module, and a satellite tv signal processing module when implementing the signal processing function, where the specific functions of each module are as follows:
the positioning signal receiving module is used for receiving positioning signals transmitted by a positioning satellite;
the satellite television signal receiving module is used for receiving satellite television signals transmitted by a direct broadcast satellite;
the positioning signal analysis module is used for analyzing the positioning signal to obtain longitude and latitude information of the current position;
the latitude and longitude information matching module is used for matching the latitude and longitude information with preset map data to determine the region to which the current position belongs, and the map data is a data set comprising a plurality of position points of at least one region;
and the satellite television signal processing module is used for processing the satellite television signal according to the region to which the current position belongs.
The digital video converter 700 may include, but is not limited to, a processor 710, a memory 720. Those skilled in the art will appreciate that fig. 7 is only one example of a digital video converter device 700 and is not intended to limit the digital video converter device 700 and may include more or less components than those shown, or some components may be combined, or different components, for example, the digital video converter device 700 may also include input and output devices, network access devices, buses, etc.
The Processor 710 may be a Central Processing Unit (CPU), other general purpose Processor, a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), an off-the-shelf Programmable Gate Array (FPGA) or other Programmable logic device, discrete Gate or transistor logic device, discrete hardware component, etc. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like.
The memory 720 may be an internal storage unit of the digital video converter device 700, such as a hard disk or a memory of the digital video converter device 700. The memory 720 may also be an external storage device of the Digital video converter device 700, such as a plug-in hard disk, a Smart Media Card (SMC), a Secure Digital (SD) Card, a Flash Card (Flash Card), etc. provided on the Digital video converter device 700. Further, the memory 720 may also include both an internal storage unit and an external storage device of the digital video converter device 700. The memory 720 is used for storing the computer program 721 and other programs and data required by the digital video converter device 700. The memory 720 may also be used to temporarily store data that has been output or is to be output.
The present application further provides a computer program product, which, when running on a digital video transform apparatus, causes the digital video transform apparatus to execute the positioning method described in the foregoing embodiment or execute the signal processing method described in the foregoing embodiment.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present application, and not for limiting the same. Although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; such modifications and substitutions do not substantially depart from the spirit and scope of the embodiments of the present application and are intended to be included within the scope of the present application.
Claims (10)
1. A positioning method is applied to terminal equipment, and is characterized in that the positioning method comprises the following steps:
receiving a positioning signal transmitted by a positioning satellite;
analyzing the positioning signal to obtain longitude and latitude information of the current position;
matching the longitude and latitude information with preset map data, wherein the map data is a data set comprising a plurality of position points of at least one area;
and if the longitude and latitude information is matched in the map data, determining the area to which the current position belongs according to the map data.
2. The method of claim 1, wherein matching the longitude and latitude information with preset map data comprises:
determining a target position point according to the longitude and latitude information;
judging whether the target position point is a position point in an area contained in the map data;
and if the target position point is a position point contained in the map data, judging that the longitude and latitude information is matched in the map data.
3. The method of claim 1 or 2, wherein said determining the area to which the current location belongs from the map data comprises:
and determining the area of the target position point corresponding to the latitude and longitude information in the map data.
4. A signal processing method applied to a digital video conversion apparatus, the signal processing method comprising:
receiving a positioning signal transmitted by a positioning satellite and receiving a satellite television signal transmitted by a direct broadcast satellite;
analyzing the positioning signal to obtain longitude and latitude information of the current position;
matching the longitude and latitude information with preset map data to determine the region to which the current position belongs, wherein the map data is a data set comprising a plurality of position points of at least one region;
and processing the satellite television signal according to the region to which the current position belongs.
5. The method of claim 4, wherein the matching the latitude and longitude information with preset map data to determine the area to which the current location belongs comprises:
determining a target position point according to the longitude and latitude information;
judging whether the target position point is a position point in an area contained in the map data;
and if the target position point is a position point contained in the map data, determining the area of the target position point in the map data.
6. The method according to claim 4 or 5, wherein said processing the satellite television signals according to the region to which the current location belongs comprises:
if the area of the current position is a target area contained in the map data, controlling the digital video conversion equipment to lock the received satellite television signal;
and if the area of the current position is not the target area contained in the map data, demodulating the received satellite television signal and outputting a television program corresponding to the satellite television signal.
7. The method of claim 6, wherein demodulating the received satellite television signal and outputting a television program corresponding to the satellite television signal comprises:
carrying out frequency conversion on the satellite television signal to obtain an intermediate frequency signal meeting the receiving frequency band requirement of the digital video conversion equipment;
and processing the intermediate frequency signal and outputting a television program corresponding to the intermediate frequency signal.
8. A digital video conversion apparatus, comprising:
the positioning chip is used for receiving a positioning signal transmitted by a positioning satellite, analyzing the positioning signal and acquiring longitude and latitude information of the current position;
the main chip is used for matching the longitude and latitude information with preset map data to determine the region to which the current position belongs, and the map data is a data set comprising a plurality of position points of at least one region;
the tuner is used for receiving satellite television signals and converting the satellite television signals into intermediate frequency signals;
and the demodulator is used for processing the intermediate frequency signal and outputting a television program corresponding to the intermediate frequency signal when the area to which the current position belongs is a target area contained in the map data.
9. A digital video conversion device comprising a memory, a processor and a computer program stored in said memory and executable on said processor, characterized in that said processor implements a positioning method according to any one of claims 1 to 3 or a signal processing method according to any one of claims 4 to 7 when executing said computer program.
10. A computer-readable storage medium, in which a computer program is stored which, when being executed by a processor, carries out the positioning method according to any one of claims 1 to 3, or carries out the signal processing method according to any one of claims 4 to 7.
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