CN113490042B - Display equipment and channel searching method - Google Patents
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- CN113490042B CN113490042B CN202110932457.6A CN202110932457A CN113490042B CN 113490042 B CN113490042 B CN 113490042B CN 202110932457 A CN202110932457 A CN 202110932457A CN 113490042 B CN113490042 B CN 113490042B
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Classifications
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N21/00—Selective content distribution, e.g. interactive television or video on demand [VOD]
- H04N21/40—Client devices specifically adapted for the reception of or interaction with content, e.g. set-top-box [STB]; Operations thereof
- H04N21/43—Processing of content or additional data, e.g. demultiplexing additional data from a digital video stream; Elementary client operations, e.g. monitoring of home network or synchronising decoder's clock; Client middleware
- H04N21/438—Interfacing the downstream path of the transmission network originating from a server, e.g. retrieving encoded video stream packets from an IP network
- H04N21/4383—Accessing a communication channel
- H04N21/4384—Accessing a communication channel involving operations to reduce the access time, e.g. fast-tuning for reducing channel switching latency
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04N—PICTORIAL COMMUNICATION, e.g. TELEVISION
- H04N5/00—Details of television systems
- H04N5/44—Receiver circuitry for the reception of television signals according to analogue transmission standards
- H04N5/50—Tuning indicators; Automatic tuning control
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
Abstract
The application discloses display equipment and a channel searching method, wherein full-band searching is carried out on a dtv signal by utilizing the characteristic that a certain frequency point can only carry one of the dtv or atv signals within a bandwidth range, and the frequency point with successful frequency locking is recorded; and skipping frequency points with successful frequency locking in the dtv channel searching process, and searching the atv signal. When the television channel searching method is adopted to search television channels, the channel searching mode of dtv+ atv is adopted, so that on one hand, the comprehensiveness of channel searching is ensured, on the other hand, frequency points which are successfully locked in the channel searching process of dtv are skipped when the channel searching process of dtv is performed at atv, and the channel searching efficiency and the experience of users are improved.
Description
Technical Field
The application relates to the technical field of televisions, in particular to display equipment and a channel searching method.
Background
When the television is used for the first time or the television channel is updated, a channel searching operation is required to be performed, so that the corresponding setting of the television channel (also called physical channel) and the frequency point (each physical channel corresponds to a fixed frequency point value) is realized. With the popularization of Digital televisions, a dtv (Digital TV) signal gradually replaces a atv (Analog TV) signal, that is, a frequency point of a certain transmission atv signal is vacated and then is used for the dtv signal. At present, the dtv signal and the atv signal coexist, so that a signal transmission mode of mixed networking of an analog television and a digital television is adopted in many countries. Currently, when searching channels for a television, in order to not leak dtv or atv channels, a dtv+ atv channel searching mode is generally adopted. When the dtv+ atv channel searching mode is adopted for channel searching, each frequency point in the frequency point map table needs to be searched twice, so that the channel searching efficiency is greatly reduced, and the user experience is affected.
Disclosure of Invention
The application provides display equipment and a channel searching method, which are used for solving the problem that when the existing channel searching mode is adopted for channel searching, a map table of two frequency points is required to be searched, so that the channel searching efficiency is low and the user experience degree is affected.
The application provides a display device, comprising:
the communicator is configured to receive a channel searching request from a user side;
a controller configured to: full-band searching is carried out on the dtv signal, and the physical channel number or the frequency range where the frequency point with successful frequency locking is located is recorded; and skipping frequency points with successful frequency locking in the dtv channel searching process, and searching the atv signal.
The application also provides a channel searching method, which comprises the following steps:
receiving a channel searching request from a user side;
full-band searching is carried out on the dtv signal, and the physical channel number or the frequency range where the frequency point with successful frequency locking is located is recorded;
and skipping frequency points with successful frequency locking in the dtv channel searching process, and searching the atv signal.
In some embodiments, full-band searching is performed on the dtv signal, and physical channel numbers where frequency points with successful frequency locking are located are recorded, which specifically includes:
starting dtv searching, and taking a first frequency point in a frequency point map table as a target frequency point;
judging whether the dtv channel searching is finished, if the dtv channel searching is not finished, locking the current target frequency point, judging whether the frequency locking is successful, and if the frequency locking is successful, recording the physical channel number of the current target frequency point into a skip list B; if the frequency is not locked successfully, the next step is carried out;
traversing the frequency point map table, obtaining the next frequency point in the frequency point map table, taking the frequency point as a target frequency point, and repeating the previous step;
and if the dtv channel searching is finished, finishing the dtv channel searching.
In some embodiments, skipping frequency points with successful frequency locking in the dtv channel searching process, searching the atv signal specifically includes:
starting atv searching, and taking a first frequency point on a frequency point map table as a target frequency point;
judging whether atv channel searching is finished or not, if atv channel searching is not finished, judging whether the physical channel number of the current target frequency point is recorded in a skip list B or not, and if the physical channel number of the current target frequency point is recorded in the skip list B, skipping the current target frequency point; if the physical channel number of the current target frequency point is not recorded in the skip list B, frequency locking the current target frequency point;
traversing the frequency point map table, obtaining the next frequency point in the frequency point map table, taking the frequency point as a target frequency point, and repeating the previous step;
and if atv channel searching is finished, ending channel searching.
In some embodiments, full-band searching is performed on the dtv signal, and physical channel numbers where frequency points with successful frequency locking are located are recorded, which specifically includes:
judging a setting mode of a frequency point, wherein the setting mode of the frequency point comprises STD and HRC;
starting dtv searching, and taking a first frequency point in a corresponding frequency point setting mode in a frequency point map table as a target frequency point;
judging whether the dtv channel searching is finished or not, if the dtv channel searching is not finished, locking the current target frequency point, judging whether the frequency locking is successful, and if the frequency locking is successful, recording the physical channel number of the target frequency point into a skip list B; if the frequency is not locked successfully, the next step is carried out;
traversing the frequency point map table, obtaining the next frequency point in the frequency point map table under the corresponding frequency point setting mode, taking the frequency point as a target frequency point, and repeating the previous step;
and if the dtv channel searching is finished, finishing the dtv channel searching.
In some embodiments, skipping frequency points with successful frequency locking in the dtv channel searching process, searching the atv signal specifically includes:
starting atv searching, and taking a first frequency point in a corresponding frequency point setting mode in a frequency point map table as a target frequency point;
judging whether atv channel searching is finished or not, if atv channel searching is not finished, judging whether the physical channel number of the current target frequency point is recorded in a skip list B or not, and if the physical channel number of the current target frequency point is recorded in the skip list B, skipping the current target frequency point; if the physical channel number of the current target frequency point is not recorded in the skip list B, frequency locking the current target frequency point;
traversing the frequency point map table, obtaining the next frequency point in the frequency point map table under the corresponding frequency point setting mode, taking the frequency point as a target frequency point, and repeating the previous step;
and if atv channel searching is finished, ending channel searching.
In some embodiments, a frequency point setting mode is determined, the frequency point setting mode includes STD and HRC, specifically including,
taking an STD frequency point corresponding to a first frequency point of the frequency point map table as a prediction frequency point;
frequency locking prediction frequency points, if frequency locking is successful, setting a frequency point setting mode to be STD, and ending the judging process of the frequency point setting mode; if the frequency locking is successful, frequency locking is carried out on the HRC frequency point corresponding to the predicted frequency point, if the frequency locking is successful, the frequency point setting mode is HRC, and the judging process of the frequency point setting mode is ended; if the frequency is not locked successfully, the STD frequency point corresponding to the next frequency point in the frequency point map table is traversed and used as a prediction frequency point, and the step is repeated until the frequency locking is successful.
In some embodiments, full-band searching is performed on the dtv signal, and a frequency range where a frequency point where frequency locking is successful is located is recorded, which specifically includes:
starting dtv searching, and taking a first frequency point in a frequency point map table as a target frequency point;
judging whether the dtv channel searching is finished or not, if the dtv channel searching is not finished, locking the current target frequency point, and judging whether the frequency locking is successful or not; if the frequency locking is successful, recording the frequency range of the current target frequency point into a skip list B; if the frequency is not locked successfully, the next step is carried out;
traversing the frequency point map table, obtaining the next frequency point in the frequency point map table, taking the frequency point as a target frequency point, and repeating the previous step;
and if the dtv channel searching is finished, finishing the dtv channel searching.
In some embodiments, skipping frequency points with successful frequency locking in the dtv channel searching process, searching the atv signal specifically includes:
starting atv searching, and taking the minimum frequency point on the frequency point map table as a target frequency point;
judging whether atv channel searching is finished or not, if atv channel searching is not finished, judging whether the frequency range of the current target frequency point is recorded in a skip list B or not, and if the frequency range of the current target frequency point is recorded in the skip list B, skipping the current target frequency point; if the frequency range of the current target frequency point is not recorded in the skip list B, locking the current target frequency point;
accumulating a preset step length for the current target frequency point to obtain the next target frequency point, and repeating the previous step;
and if atv channel searching is finished, ending channel searching.
The application discloses display equipment and a channel searching method, wherein full-band searching is carried out on a dtv signal by utilizing the characteristic that a certain frequency point can only carry one of the dtv or atv signals within a bandwidth range, and the frequency point with successful frequency locking is recorded; and skipping frequency points with successful frequency locking in the dtv channel searching process, and searching the atv signal. When the television channel searching method is adopted to search television channels, the channel searching mode of dtv+ atv is adopted, so that on one hand, the comprehensiveness of channel searching is ensured, on the other hand, frequency points which are successfully locked in the channel searching process of dtv are skipped when the channel searching process of dtv is performed at atv, and the channel searching efficiency and the experience of users are improved. When the television channel searching method is adopted to search television channels, the channel searching mode of dtv+ atv is adopted, so that on one hand, the comprehensiveness of channel searching is ensured, on the other hand, frequency points which are successfully locked in the channel searching process of dtv are skipped when the channel searching process of dtv is performed at atv, and the channel searching efficiency and the experience of users are improved.
Drawings
In order to more clearly illustrate the technical solutions of the present application, the drawings that are needed in the embodiments will be briefly described below, and it will be obvious to those skilled in the art that other drawings can be obtained from these drawings without inventive effort.
FIG. 1 illustrates an operational scenario between a display device and a control apparatus according to some embodiments;
fig. 2 shows a hardware configuration block diagram of the control device 100 according to some embodiments;
fig. 3 illustrates a hardware configuration block diagram of a display device 200 according to some embodiments;
FIG. 4 illustrates a software configuration diagram in a display device 200 according to some embodiments;
FIG. 5 is a flow chart of the method of searching channels of the present application;
FIG. 6 is a flowchart illustrating a process for searching for a television antanna interface signal in the North America market according to an embodiment of the present disclosure;
fig. 7 is a flowchart of a channel searching process of a television cable interface signal in the second north american market according to the embodiment of the present application;
fig. 8 is a flowchart of a channel searching process of the three EM market television according to the embodiment of the present application.
Detailed Description
For purposes of clarity and implementation of the present application, the following description will make clear and complete descriptions of exemplary implementations of the present application with reference to the accompanying drawings in which exemplary implementations of the present application are illustrated, it being apparent that the exemplary implementations described are only some, but not all, of the examples of the present application.
It should be noted that the brief description of the terms in the present application is only for convenience in understanding the embodiments described below, and is not intended to limit the embodiments of the present application. Unless otherwise indicated, these terms should be construed in their ordinary and customary meaning.
The terms "first," second, "" third and the like in the description and in the claims and in the above-described figures are used for distinguishing between similar or similar objects or entities and not necessarily for limiting a particular order or sequence, unless otherwise indicated. It is to be understood that the terms so used are interchangeable under appropriate circumstances.
The terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a product or apparatus that comprises a list of elements is not necessarily limited to all elements explicitly listed, but may include other elements not expressly listed or inherent to such product or apparatus.
The term "module" refers to any known or later developed hardware, software, firmware, artificial intelligence, fuzzy logic, or combination of hardware or/and software code that is capable of performing the function associated with that element.
Fig. 1 is a schematic diagram of an operation scenario between a display device and a control apparatus according to an embodiment. As shown in fig. 1, a user may operate the display device 200 through the smart device 300 or the control apparatus 100.
In some embodiments, the control apparatus 100 may be a remote controller, and the communication between the remote controller and the display device includes infrared protocol communication or bluetooth protocol communication, and other short-range communication modes, and the display device 200 is controlled by a wireless or wired mode. The user may control the display device 200 by inputting user instructions through keys on a remote control, voice input, control panel input, etc.
In some embodiments, a smart device 300 (e.g., mobile terminal, tablet, computer, notebook, etc.) may also be used to control the display device 200. For example, the display device 200 is controlled using an application running on a smart device.
In some embodiments, the display device 200 may also perform control in a manner other than the control apparatus 100 and the smart device 300, for example, the voice command control of the user may be directly received through a module configured inside the display device 200 device for acquiring voice commands, or the voice command control of the user may be received through a voice control device configured outside the display device 200 device.
In some embodiments, the display device 200 is also in data communication with a server 400. The display device 200 may be permitted to make communication connections via a Local Area Network (LAN), a Wireless Local Area Network (WLAN), and other networks. The server 400 may provide various contents and interactions to the display device 200. The server 400 may be a cluster, or may be multiple clusters, and may include one or more types of servers.
Fig. 2 exemplarily shows a block diagram of a configuration of the control apparatus 100 in accordance with an exemplary embodiment. As shown in fig. 2, the control device 100 includes a controller 110, a communication interface 130, a user input/output interface 140, a memory, and a power supply. The control apparatus 100 may receive an input operation instruction of a user and convert the operation instruction into an instruction recognizable and responsive to the display device 200, and function as an interaction between the user and the display device 200.
Fig. 3 shows a hardware configuration block diagram of the display device 200 in accordance with an exemplary embodiment.
In some embodiments, display apparatus 200 includes at least one of a modem 210, a communicator 220, a detector 230, an external device interface 240, a controller 250, a display 260, an audio output interface 270, memory, a power supply, a user interface.
In some embodiments the controller includes a processor, a video processor, an audio processor, a graphics processor, RAM, ROM, a first interface for input/output to an nth interface.
In some embodiments, the display 260 includes a display screen component for presenting a picture, and a driving component for driving an image display, for receiving image signals from the controller output, for displaying video content, image content, and a menu manipulation interface, and for manipulating a UI interface by a user.
In some embodiments, the display 260 may be a liquid crystal display, an OLED display, a projection device, and a projection screen.
In some embodiments, communicator 220 is a component for communicating with external devices or servers according to various communication protocol types. For example: the communicator may include at least one of a Wifi module, a bluetooth module, a wired ethernet module, or other network communication protocol chip or a near field communication protocol chip, and an infrared receiver. The display device 200 may establish transmission and reception of control signals and data signals with the external control device 100 or the server 400 through the communicator 220.
In some embodiments, the user interface may be configured to receive control signals from the control device 100 (e.g., an infrared remote control, etc.).
In some embodiments, the detector 230 is used to collect signals of the external environment or interaction with the outside. For example, detector 230 includes a light receiver, a sensor for capturing the intensity of ambient light; alternatively, the detector 230 includes an image collector such as a camera, which may be used to collect external environmental scenes, user attributes, or user interaction gestures, or alternatively, the detector 230 includes a sound collector such as a microphone, or the like, which is used to receive external sounds.
In some embodiments, the external device interface 240 may include, but is not limited to, the following: high Definition Multimedia Interface (HDMI), analog or data high definition component input interface (component), composite video input interface (CVBS), USB input interface (USB), RGB port, or the like. The input/output interface may be a composite input/output interface formed by a plurality of interfaces.
In some embodiments, the modem 210 receives broadcast television signals via wired or wireless reception and demodulates audio-video signals, such as EPG data signals, from a plurality of wireless or wired broadcast television signals.
In some embodiments, the controller 250 and the modem 210 may be located in separate devices, i.e., the modem 210 may also be located in an external device to the main device in which the controller 250 is located, such as an external set-top box or the like.
In some embodiments, the controller 250 controls the operation of the display device and responds to user operations through various software control programs stored on the memory. The controller 250 controls the overall operation of the display apparatus 200. For example: in response to receiving a user command to select a UI object to be displayed on the display 260, the controller 250 may perform an operation related to the object selected by the user command.
In some embodiments, the object may be any one of selectable objects, such as a hyperlink, an icon, or other operable control. The operations related to the selected object are: displaying an operation of connecting to a hyperlink page, a document, an image, or the like, or executing an operation of a program corresponding to the icon.
In some embodiments the controller includes at least one of a central processing unit (Central Processing Unit, CPU), video processor, audio processor, graphics processor (Graphics Processing Unit, GPU), RAM Random Access Memory, RAM), ROM (Read-Only Memory, ROM), first to nth interfaces for input/output, a communication Bus (Bus), and the like.
A CPU processor. For executing operating system and application program instructions stored in the memory, and executing various application programs, data and contents according to various interactive instructions received from the outside, so as to finally display and play various audio and video contents. The CPU processor may include a plurality of processors. Such as one main processor and one or more sub-processors.
In some embodiments, a graphics processor is used to generate various graphical objects, such as: icons, operation menus, user input instruction display graphics, and the like. The graphic processor comprises an arithmetic unit, which is used for receiving various interactive instructions input by a user to operate and displaying various objects according to display attributes; the device also comprises a renderer for rendering various objects obtained based on the arithmetic unit, wherein the rendered objects are used for being displayed on a display.
In some embodiments, the video processor is configured to receive an external video signal, perform video processing such as decompression, decoding, scaling, noise reduction, frame rate conversion, resolution conversion, image composition, etc., according to a standard codec protocol of an input signal, and may obtain a signal that is displayed or played on the directly displayable device 200.
In some embodiments, the video processor includes a demultiplexing module, a video decoding module, an image synthesis module, a frame rate conversion module, a display formatting module, and the like. The demultiplexing module is used for demultiplexing the input audio and video data stream. And the video decoding module is used for processing the demultiplexed video signal, including decoding, scaling and the like. And an image synthesis module, such as an image synthesizer, for performing superposition mixing processing on the graphic generator and the video image after the scaling processing according to the GUI signal input by the user or generated by the graphic generator, so as to generate an image signal for display. And the frame rate conversion module is used for converting the frame rate of the input video. And the display formatting module is used for converting the received frame rate into a video output signal and changing the video output signal to be in accordance with a display format, such as outputting RGB data signals.
In some embodiments, the audio processor is configured to receive an external audio signal, decompress and decode the audio signal according to a standard codec protocol of an input signal, and perform noise reduction, digital-to-analog conversion, and amplification processing to obtain a sound signal that can be played in a speaker.
In some embodiments, a user may input a user command through a Graphical User Interface (GUI) displayed on the display 260, and the user input interface receives the user input command through the Graphical User Interface (GUI). Alternatively, the user may input the user command by inputting a specific sound or gesture, and the user input interface recognizes the sound or gesture through the sensor to receive the user input command.
In some embodiments, a "user interface" is a media interface for interaction and exchange of information between an application or operating system and a user that enables conversion between an internal form of information and a form acceptable to the user. A commonly used presentation form of the user interface is a graphical user interface (Graphic User Interface, GUI), which refers to a user interface related to computer operations that is displayed in a graphical manner. It may be an interface element such as an icon, a window, a control, etc. displayed in a display screen of the electronic device, where the control may include a visual interface element such as an icon, a button, a menu, a tab, a text box, a dialog box, a status bar, a navigation bar, a Widget, etc.
In some embodiments, a system of display devices may include a Kernel (Kernel), a command parser (shell), a file system, and an application program. The kernel, shell, and file system together form the basic operating system architecture that allows users to manage files, run programs, and use the system. After power-up, the kernel is started, the kernel space is activated, hardware is abstracted, hardware parameters are initialized, virtual memory, a scheduler, signal and inter-process communication (IPC) are operated and maintained. After the kernel is started, shell and user application programs are loaded again. The application program is compiled into machine code after being started to form a process.
Referring to FIG. 4, in some embodiments, the system is divided into four layers, from top to bottom, an application layer (referred to as an "application layer"), an application framework layer (Application Framework layer) (referred to as a "framework layer"), a An Zhuoyun row (Android run) and a system library layer (referred to as a "system runtime layer"), and a kernel layer, respectively.
In some embodiments, at least one application program is running in the application program layer, and these application programs may be a Window (Window) program of an operating system, a system setting program, a clock program, or the like; or may be an application developed by a third party developer. In particular implementations, the application packages in the application layer are not limited to the above examples.
The framework layer provides an application programming interface (application programming interface, API) and programming framework for the application. The application framework layer includes a number of predefined functions. The application framework layer corresponds to a processing center that decides to let the applications in the application layer act. Through the API interface, the application program can access the resources in the system and acquire the services of the system in the execution.
As shown in fig. 4, the application framework layer in the embodiment of the present application includes a manager (manager), a Content Provider (Content Provider), and the like, where the manager includes at least one of the following modules: an Activity Manager (Activity Manager) is used to interact with all activities that are running in the system; a Location Manager (Location Manager) is used to provide system services or applications with access to system Location services; a Package Manager (Package Manager) for retrieving various information about an application Package currently installed on the device; a notification manager (Notification Manager) for controlling the display and clearing of notification messages; a Window Manager (Window Manager) is used to manage bracketing icons, windows, toolbars, wallpaper, and desktop components on the user interface.
In some embodiments, the activity manager is used to manage the lifecycle of the individual applications as well as the usual navigation rollback functions, such as controlling the exit, opening, fallback, etc. of the applications. The window manager is used for managing all window programs, such as obtaining the size of the display screen, judging whether a status bar exists or not, locking the screen, intercepting the screen, controlling the change of the display window (for example, reducing the display window to display, dithering display, distorting display, etc.), etc.
In some embodiments, the system runtime layer provides support for the upper layer, the framework layer, and when the framework layer is in use, the android operating system runs the C/C++ libraries contained in the system runtime layer to implement the functions to be implemented by the framework layer.
In some embodiments, the kernel layer is a layer between hardware and software. As shown in fig. 4, the kernel layer contains at least one of the following drivers: audio drive, display drive, bluetooth drive, camera drive, WIFI drive, USB drive, HDMI drive, sensor drive (e.g., fingerprint sensor, temperature sensor, pressure sensor, etc.), and power supply drive, etc.
The application provides a display device including a communicator and a controller. Wherein the communicator is configured to receive a channel search request from the user terminal. The controller is configured to: full-band searching is carried out on the dtv signal, and the physical channel number or the frequency range where the frequency point with successful frequency locking is located is recorded; and skipping frequency points with successful frequency locking in the dtv channel searching process, and searching the atv signal.
For the display device of the present application, the present application further provides a channel searching method, as shown in fig. 5, where the method includes the following steps:
s100, receiving a channel searching request from a user side;
s200, full-band searching is carried out on the dtv signal, and the physical channel number of the frequency point where the searched frequency locking is successful is recorded;
s300, skipping frequency points with successful frequency locking in the dtv channel searching process, and searching atv signals.
Only one of the dtv or atv signals is carried in the bandwidth range for a certain frequency point, and both are not carried at the same time. In the method, by utilizing the characteristic of the frequency point, when the channel searching is carried out in a channel searching mode of dtv+ atv, the dtv signal is searched first, if the frequency locking is successful under a certain frequency point, the frequency point is skipped directly when the atv signal is searched, and the channel searching efficiency is improved and the user experience is improved.
Of course, in a specific use process, different specific channel searching processes are combined. The specific implementation process of the channel searching method of the present application will be specifically described by way of examples.
In example one, take the search process of the television antenna interface signal in the north american market as an example. Table 1 is a table of physical channel data for the north american market television antanna segment.
Table 1 shows the physical channel data table for the television antanna segment in North America
| Antenna | DTV | ATV |
| Channel Numbers | freq(MHz) | freq(MHz) |
| 2 | 57 | 55.25 |
| 3 | 63 | 61.25 |
| 4 | 69 | 67.25 |
| 5 | 79 | 77.25 |
| 6 | 85 | 83.25 |
| 7 | 177 | 175.25 |
| 8 | 183 | 181.25 |
| 9 | 189 | 187.25 |
| 10 | 195 | 193.25 |
| 11 | 201 | 199.25 |
| 12 | 207 | 205.25 |
| 13 | 213 | 211.25 |
| .. | .. | .. |
| 69 | 803 | 801.25 |
As can be seen from table 1, the north american market is more specific, the number of the physical channels in the antanna segment is from 2 to 69, the bandwidth is 6M, the frequency point value corresponding to each physical channel is fixed, and the dtv frequency point value=the frequency point value +1.75Mhz of the corresponding physical channel atv.
As shown in fig. 6, the channel searching process of the television antenna interface signal in the north american market specifically includes the following steps:
s100, receiving a channel searching request from a user side;
s200, full-band searching is carried out on the dtv signal, and the physical channel number of the frequency point where the frequency locking is successful is recorded, wherein in the example, the method specifically comprises the following steps:
s210, starting a dtv search, and taking a first frequency point in a frequency point map table as a target frequency point;
s220, judging whether the dtv channel searching is finished,
s230, if dtv channel searching is not finished, locking the current target frequency point and judging whether frequency locking is successful;
s231, if the frequency locking is successful, recording the physical channel number of the current target frequency point into a skip list B;
s232, if the frequency is not locked successfully, performing the next step;
s240, traversing the frequency point map table, obtaining the next frequency point in the frequency point map table, taking the frequency point as a target frequency point, and returning to the step S220;
s250, ending the dtv channel searching if the dtv channel searching is ended;
s300, skipping frequency points with successful frequency locking in the dtv channel searching process, and searching atv signals, wherein the method specifically comprises the following steps:
s310, starting atv to search a channel, and taking a first frequency point on a frequency point map table as a target frequency point;
s320, judging whether atv channel searching is finished,
s330, if atv is not finished, judging whether the physical channel number of the current target frequency point is recorded in the skip list B,
s340, if the physical channel number of the current target frequency point is recorded in the skip list B, skipping the current target frequency point;
s350, if the physical channel number of the current target frequency point is not recorded in the skip list B, frequency locking the current target frequency point;
s360, traversing the frequency point map table, obtaining the next frequency point in the frequency point map table, taking the frequency point as a target frequency point, and returning to the step S320;
and S370, if the atv channel searching is finished, finishing the channel searching.
In the second example, taking the channel searching process of the television cable interface signal in the North America market as an example. Table 2 is a table of physical channel data for the cable segment of a north american market.
Table 2 shows the table of physical channel data for the cable section of North America market
As can be seen from table 2 above, the Cable segment physical channel number is from 1 to 135, the bandwidth is 6M, the frequency point values corresponding to the physical channels are all fixed, but slightly different from the antanna segment, and the Cable standard adopted in different regions (states) is different, and the main frequency point setting includes STD (Standard Cable TV signals, standard Cable television signal) frequency point setting and HRC (Harmonic Related Carrier ). For each state, only one of the criteria is typically used, and multiple labels are not mixed. Therefore, the optimization of the cable segment search can be added with a standard check flow besides the anticna segment, if the frequency locking is successful under a certain frequency point, the adopted standard is fixed, and the subsequent frequency point search can be carried out by adopting the standard.
As shown in fig. 7, the channel searching process of the north american television cable interface signal specifically includes the following steps.
S100, receiving a channel searching request from a user side.
S200, full-band searching is carried out on the dtv signal, the physical channel number of the frequency point where the frequency locking is successful is recorded, and in the example, the step S200 specifically comprises the following steps.
S210, judging a setting mode of the frequency point, wherein the setting mode of the frequency point comprises STD and HRC, and judging whether the setting mode of the frequency point is STD;
in this example, the setting mode of the frequency point is determined, where the setting mode of the frequency point includes STD and HRC, and specifically includes:
taking an STD frequency point corresponding to a first frequency point of the frequency point map table as a prediction frequency point;
frequency locking prediction frequency points, if frequency locking is successful, setting a frequency point setting mode to be STD, and ending the judging process of the frequency point setting mode; if the frequency locking is successful, frequency locking is carried out on the HRC frequency point corresponding to the predicted frequency point, if the frequency locking is successful, the frequency point setting mode is HRC, and the judging process of the frequency point setting mode is ended; if the frequency is not locked successfully, the STD frequency point corresponding to the next frequency point in the frequency point map table is traversed and used as a prediction frequency point, and the step is repeated until the frequency locking is successful.
S220, starting dtv search, and taking a first frequency point in a corresponding frequency point setting mode in a frequency point map table as a target frequency point;
s230, judging whether the dtv search is finished,
s240, if the dtv search is not finished, locking the current target frequency point and judging whether the frequency locking is successful,
s241, if the frequency locking is successful, recording the physical channel number of the target frequency point into a skip list B;
s242, if the frequency is not locked successfully, the next step is carried out;
s250, traversing a frequency point map table, acquiring the next frequency point in the frequency point map table in a corresponding frequency point setting mode, taking the frequency point as a target frequency point, and returning to the step S230;
s260, if the dtv channel searching is finished, finishing the dtv channel searching.
S300, skipping frequency points with successful frequency locking in the dtv channel searching process, and searching atv signals, wherein the method specifically comprises the following steps:
s310, starting atv to search a channel, and taking a first frequency point in a corresponding frequency point setting mode in a frequency point map table as a target frequency point;
s320, judging whether atv channel searching is finished,
s330, if atv is not finished, judging whether the physical channel number of the current target frequency point is recorded in the skip list B,
s340, if the physical channel number of the current target frequency point is recorded in the skip list B, skipping the current target frequency point;
s350, if the physical channel number of the current target frequency point is not recorded in the skip list B, frequency locking the current target frequency point;
s360, traversing the frequency point map table, acquiring the next frequency point in the frequency point map table under the corresponding frequency point setting mode, taking the frequency point as a target frequency point, and returning to the step S330;
s370, if the atv channel searching is finished, finishing the channel searching;
in an example three, taking the channel searching process of the television in the EM market as an example. As shown in fig. 8, the channel searching process of the EM market television specifically includes the following steps.
S100, receiving a channel searching request from a user side.
S200, full-band searching is carried out on the dtv signal, the frequency range where the frequency point where the frequency locking is successful is located is recorded, and in the example, the method specifically comprises the following steps:
s210, starting a dtv search, and taking a first frequency point in a frequency point map table as a target frequency point;
s220, judging whether the dtv channel searching is finished,
s230, if dtv channel searching is not finished, locking the current target frequency point and judging whether frequency locking is successful;
s231, if the frequency locking is successful, recording the frequency range of the current target frequency point into a skip list B, for example, the target frequency point is 474Mhz, and the recorded frequency range is [470Mhz, 470Mhz ];
s232, if the frequency is not locked successfully, performing the next step;
s240, traversing the frequency point map table, obtaining the next frequency point in the frequency point map table, taking the frequency point as a target frequency point, and returning to the step S220;
s250, ending the dtv channel searching if the dtv channel searching is ended;
s300, skipping frequency points with successful frequency locking in the dtv channel searching process, and searching atv signals, wherein the method specifically comprises the following steps:
s310, starting atv to search a channel, and taking the minimum frequency point on the frequency point map table as a target frequency point;
s320, judging whether atv channel searching is finished,
s330, if atv search is not finished, judging whether the frequency range of the current target frequency point is recorded in the skip list B,
s340, if the frequency range of the current target frequency point is recorded in the skip list B, skipping the current target frequency point;
s350, if the frequency range of the current target frequency point is not recorded in the skip list B, locking the current target frequency point;
s360, accumulating a preset step length for the current target frequency point to obtain the next target frequency point, and returning to the step S320;
for an analog television, the central frequency point of the analog television is not fixed as the central frequency point of a television in North America market, so that in the example, channel searching is gradually accumulated according to step sizes; of course, the frequency map table in each country is slightly different, for example, the bandwidth is 6M, 7M or 8M, so the step length of the preset step length increased in operation can be correspondingly adjusted according to the actual situation.
And S370, if the atv channel searching is finished, finishing the channel searching.
In order to measure the channel searching efficiency of the channel searching method, table 3 shows the channel searching time lengths of different television types in the antanna interface signal and the cable interface signal respectively.
Table 3 shows channel search performance data for different TV set types
| Model type | Antenna automatic search | Cable automatic channel searching method | Totalizing |
| roko | 1 minute 35 seconds/1 minute 37 seconds | 8 minutes 05 seconds/8 minutes 05 seconds | 9 minutes 40 seconds/9 minutes 42 seconds |
| 6886us(SI2151) | 1 minute 51 seconds/1 minute 52 seconds | 4 minutes 24 seconds/4 minutes 25 seconds | 6 minutes 15 seconds/6 minutes 17 seconds |
| 6683us(MXL661) | 2 minutes 15 seconds/2 minutes 11 seconds | 5 minutes 05 seconds/5 minutes 08 seconds | About 7 minutes 20 seconds |
| 9900us(SI2151) | 1 min 08 s | 2 minutes 50 seconds | About 3 minutes 58 seconds |
As can be seen from the data in Table 3, the search performance of model 9900us is greatly improved.
The application discloses display equipment and a channel searching method, wherein full-band searching is carried out on a dtv signal by utilizing the characteristic that a certain frequency point can only carry one of the dtv or atv signals within a bandwidth range, and the frequency point with successful frequency locking is recorded; and skipping frequency points with successful frequency locking in the dtv channel searching process, and searching the atv signal. When the television channel searching method is adopted to search television channels, the channel searching mode of dtv+ atv is adopted, so that on one hand, the comprehensiveness of channel searching is ensured, on the other hand, frequency points which are successfully locked in the channel searching process of dtv are skipped when the channel searching process of dtv is performed at atv, and the channel searching efficiency and the experience of users are improved. When the television channel searching method is adopted to search television channels, the channel searching mode of dtv+ atv is adopted, so that on one hand, the comprehensiveness of channel searching is ensured, on the other hand, frequency points which are successfully locked in the channel searching process of dtv are skipped when the channel searching process of dtv is performed at atv, and the channel searching efficiency and the experience of users are improved.
The foregoing is only a specific embodiment of the invention to enable those skilled in the art to understand or practice the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
The foregoing is merely illustrative of the embodiments of this invention and it will be appreciated by those skilled in the art that variations and modifications may be made without departing from the principles of the invention, and it is intended to cover all modifications and variations as fall within the scope of the invention.
Claims (8)
1. A display device, characterized by comprising:
the communicator is configured to receive a channel searching request from a user side;
a controller configured to:
judging a setting mode of a frequency point, taking the frequency point in the corresponding frequency point setting mode as a target frequency point, wherein an STD frequency point corresponding to a first frequency point of a frequency point map table is taken as a prediction frequency point; frequency locking prediction frequency points, if frequency locking is successful, setting a frequency point setting mode to be STD, and ending the judging process of the frequency point setting mode; if the frequency locking is successful, frequency locking is carried out on the HRC frequency point corresponding to the predicted frequency point, if the frequency locking is successful, the frequency point setting mode is HRC, and the judging process of the frequency point setting mode is ended; if the frequency is not locked successfully, traversing the STD frequency point corresponding to the next frequency point in the frequency point map table as a predicted frequency point, and repeating the step until the frequency is locked successfully;
full-band searching is carried out on the dtv signal, and the physical channel number or the frequency range where the frequency point with successful frequency locking is located is recorded;
and skipping frequency points with successful frequency locking in the dtv channel searching process, and searching the atv signal.
2. The channel searching method is characterized by comprising the following steps of:
receiving a channel searching request from a user side;
judging a frequency point setting mode, and taking a frequency point in a corresponding frequency point setting mode as a target frequency point, wherein the frequency point setting mode judging process comprises the steps that the frequency point setting model comprises STD and HRC, and taking an STD frequency point corresponding to a first frequency point of a frequency point map table as a prediction frequency point; frequency locking prediction frequency points, if frequency locking is successful, setting a frequency point setting mode to be STD, and ending the judging process of the frequency point setting mode; if the frequency locking is successful, frequency locking is carried out on the HRC frequency point corresponding to the predicted frequency point, if the frequency locking is successful, the frequency point setting mode is HRC, and the judging process of the frequency point setting mode is ended; if the frequency is not locked successfully, traversing the STD frequency point corresponding to the next frequency point in the frequency point map table as a predicted frequency point, and repeating the step until the frequency is locked successfully;
full-band searching is carried out on the dtv signal, and the physical channel number or the frequency range where the frequency point with successful frequency locking is located is recorded;
and skipping frequency points with successful frequency locking in the dtv channel searching process, and searching the atv signal.
3. The channel searching method according to claim 2, wherein full-band searching is performed on the dtv signal, and physical channel numbers where frequency points where the searched frequency locking is successful are recorded, specifically including:
starting dtv searching, and taking a first frequency point in a frequency point map table as a target frequency point;
judging whether the dtv channel searching is finished, if the dtv channel searching is not finished, locking the current target frequency point, judging whether the frequency locking is successful, and if the frequency locking is successful, recording the physical channel number of the current target frequency point into a skip list B; if the frequency is not locked successfully, the next step is carried out;
traversing the frequency point map table, obtaining the next frequency point in the frequency point map table, taking the frequency point as a target frequency point, and repeating the previous step;
and if the dtv channel searching is finished, finishing the dtv channel searching.
4. The method of claim 2, wherein skipping frequency points with successful frequency locking in the dtv channel searching process, searching the atv signal, and specifically comprises:
starting atv searching, and taking a first frequency point on a frequency point map table as a target frequency point;
judging whether atv channel searching is finished or not, if atv channel searching is not finished, judging whether the physical channel number of the current target frequency point is recorded in a skip list B or not, and if the physical channel number of the current target frequency point is recorded in the skip list B, skipping the current target frequency point; if the physical channel number of the current target frequency point is not recorded in the skip list B, frequency locking the current target frequency point;
traversing the frequency point map table, obtaining the next frequency point in the frequency point map table, taking the frequency point as a target frequency point, and repeating the previous step;
and if atv channel searching is finished, ending channel searching.
5. The channel searching method according to claim 2, wherein full-band searching is performed on the dtv signal, and physical channel numbers where frequency points where the searched frequency locking is successful are recorded, specifically including:
judging a setting mode of a frequency point, wherein the setting mode of the frequency point comprises STD and HRC;
starting dtv searching, and taking a first frequency point in a corresponding frequency point setting mode in a frequency point map table as a target frequency point;
judging whether the dtv channel searching is finished or not, if the dtv channel searching is not finished, locking the current target frequency point, judging whether the frequency locking is successful, and if the frequency locking is successful, recording the physical channel number of the target frequency point into a skip list B; if the frequency is not locked successfully, the next step is carried out;
traversing the frequency point map table, obtaining the next frequency point in the frequency point map table under the corresponding frequency point setting mode, taking the frequency point as a target frequency point, and repeating the previous step;
and if the dtv channel searching is finished, finishing the dtv channel searching.
6. The method of claim 5, wherein skipping frequency points with successful frequency locking in the dtv channel searching process, searching atv signals, and specifically comprises:
starting atv searching, and taking a first frequency point in a corresponding frequency point setting mode in a frequency point map table as a target frequency point;
judging whether atv channel searching is finished or not, if atv channel searching is not finished, judging whether the physical channel number of the current target frequency point is recorded in a skip list B or not, and if the physical channel number of the current target frequency point is recorded in the skip list B, skipping the current target frequency point; if the physical channel number of the current target frequency point is not recorded in the skip list B, frequency locking the current target frequency point;
traversing the frequency point map table, obtaining the next frequency point in the frequency point map table under the corresponding frequency point setting mode, taking the frequency point as a target frequency point, and repeating the previous step;
and if atv channel searching is finished, ending channel searching.
7. The channel searching method according to claim 2, wherein full-band searching is performed on the dtv signal, and a frequency range in which the frequency point of successful frequency locking is located is recorded, specifically including:
starting dtv searching, and taking a first frequency point in a frequency point map table as a target frequency point;
judging whether the dtv channel searching is finished or not, if the dtv channel searching is not finished, locking the current target frequency point, and judging whether the frequency locking is successful or not; if the frequency locking is successful, recording the frequency range of the current target frequency point into a skip list B; if the frequency is not locked successfully, the next step is carried out;
traversing the frequency point map table, obtaining the next frequency point in the frequency point map table, taking the frequency point as a target frequency point, and repeating the previous step;
and if the dtv channel searching is finished, finishing the dtv channel searching.
8. The method of claim 7, wherein skipping frequency points with successful frequency locking in the dtv channel searching process searches for atv signals, and specifically comprises:
starting atv searching, and taking the minimum frequency point on the frequency point map table as a target frequency point;
judging whether atv channel searching is finished or not, if atv channel searching is not finished, judging whether the frequency range of the current target frequency point is recorded in a skip list B or not, and if the frequency range of the current target frequency point is recorded in the skip list B, skipping the current target frequency point; if the frequency range of the current target frequency point is not recorded in the skip list B, locking the current target frequency point;
accumulating a preset step length for the current target frequency point to obtain the next target frequency point, and repeating the previous step;
and if atv channel searching is finished, ending channel searching.
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| CN202110932457.6A CN113490042B (en) | 2021-08-13 | 2021-08-13 | Display equipment and channel searching method |
| PCT/CN2022/111526 WO2023016499A1 (en) | 2021-08-10 | 2022-08-10 | Method for searching for channels and display device |
| CN202280050133.2A CN117795966A (en) | 2021-08-10 | 2022-08-10 | Channel searching method and display device |
| US18/437,470 US20240187682A1 (en) | 2021-08-10 | 2024-02-09 | Method for searching for channels and display apparatus |
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| CN102186040A (en) * | 2011-05-13 | 2011-09-14 | 四川长虹电器股份有限公司 | Quick channel searching method for digital analog television integrated machine |
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